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>\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>\n"));
 372         case HELP_PROJECTSPACE:
 373                 return (gettext("\tprojectspace [-Hp] [-o field[,...]] "
 374                     "[-s field] ... \n"
 375                     "\t    [-S field] ... <filesystem|snapshot>\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[,...]] filesystem | snapshot
2485  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2486  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2487  * zfs projectspace [-Hp] [-o field[,...]] [-s field [-s field]...]
2488  *                [-S field [-S field]...] filesystem | snapshot
2489  *
2490  *      -H      Scripted mode; elide headers and separate columns by tabs.
2491  *      -i      Translate SID to POSIX ID.
2492  *      -n      Print numeric ID instead of user/group name.
2493  *      -o      Control which fields to display.
2494  *      -p      Use exact (parsable) numeric output.
2495  *      -s      Specify sort columns, descending order.
2496  *      -S      Specify sort columns, ascending order.
2497  *      -t      Control which object types to display.
2498  *
2499  *      Displays space consumed by, and quotas on, each user in the specified
2500  *      filesystem or snapshot.
2501  */
2502
2503 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2504 enum us_field_types {
2505         USFIELD_TYPE,
2506         USFIELD_NAME,
2507         USFIELD_USED,
2508         USFIELD_QUOTA,
2509         USFIELD_OBJUSED,
2510         USFIELD_OBJQUOTA
2511 };
2512 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA",
2513                                     "OBJUSED", "OBJQUOTA" };
2514 static char *us_field_names[] = { "type", "name", "used", "quota",
2515                                     "objused", "objquota" };
2516 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2517
2518 #define USTYPE_PSX_GRP  (1 << 0)
2519 #define USTYPE_PSX_USR  (1 << 1)
2520 #define USTYPE_SMB_GRP  (1 << 2)
2521 #define USTYPE_SMB_USR  (1 << 3)
2522 #define USTYPE_PROJ     (1 << 4)
2523 #define USTYPE_ALL      \
2524         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR | \
2525             USTYPE_PROJ)
2526
2527 static int us_type_bits[] = {
2528         USTYPE_PSX_GRP,
2529         USTYPE_PSX_USR,
2530         USTYPE_SMB_GRP,
2531         USTYPE_SMB_USR,
2532         USTYPE_ALL
2533 };
2534 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2535         "smbuser", "all" };
2536
2537 typedef struct us_node {
2538         nvlist_t        *usn_nvl;
2539         uu_avl_node_t   usn_avlnode;
2540         uu_list_node_t  usn_listnode;
2541 } us_node_t;
2542
2543 typedef struct us_cbdata {
2544         nvlist_t        **cb_nvlp;
2545         uu_avl_pool_t   *cb_avl_pool;
2546         uu_avl_t        *cb_avl;
2547         boolean_t       cb_numname;
2548         boolean_t       cb_nicenum;
2549         boolean_t       cb_sid2posix;
2550         zfs_userquota_prop_t cb_prop;
2551         zfs_sort_column_t *cb_sortcol;
2552         size_t          cb_width[USFIELD_LAST];
2553 } us_cbdata_t;
2554
2555 static boolean_t us_populated = B_FALSE;
2556
2557 typedef struct {
2558         zfs_sort_column_t *si_sortcol;
2559         boolean_t       si_numname;
2560 } us_sort_info_t;
2561
2562 static int
2563 us_field_index(char *field)
2564 {
2565         int i;
2566
2567         for (i = 0; i < USFIELD_LAST; i++) {
2568                 if (strcmp(field, us_field_names[i]) == 0)
2569                         return (i);
2570         }
2571
2572         return (-1);
2573 }
2574
2575 static int
2576 us_compare(const void *larg, const void *rarg, void *unused)
2577 {
2578         const us_node_t *l = larg;
2579         const us_node_t *r = rarg;
2580         us_sort_info_t *si = (us_sort_info_t *)unused;
2581         zfs_sort_column_t *sortcol = si->si_sortcol;
2582         boolean_t numname = si->si_numname;
2583         nvlist_t *lnvl = l->usn_nvl;
2584         nvlist_t *rnvl = r->usn_nvl;
2585         int rc = 0;
2586         boolean_t lvb, rvb;
2587
2588         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2589                 char *lvstr = "";
2590                 char *rvstr = "";
2591                 uint32_t lv32 = 0;
2592                 uint32_t rv32 = 0;
2593                 uint64_t lv64 = 0;
2594                 uint64_t rv64 = 0;
2595                 zfs_prop_t prop = sortcol->sc_prop;
2596                 const char *propname = NULL;
2597                 boolean_t reverse = sortcol->sc_reverse;
2598
2599                 switch (prop) {
2600                 case ZFS_PROP_TYPE:
2601                         propname = "type";
2602                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2603                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2604                         if (rv32 != lv32)
2605                                 rc = (rv32 < lv32) ? 1 : -1;
2606                         break;
2607                 case ZFS_PROP_NAME:
2608                         propname = "name";
2609                         if (numname) {
2610 compare_nums:
2611                                 (void) nvlist_lookup_uint64(lnvl, propname,
2612                                     &lv64);
2613                                 (void) nvlist_lookup_uint64(rnvl, propname,
2614                                     &rv64);
2615                                 if (rv64 != lv64)
2616                                         rc = (rv64 < lv64) ? 1 : -1;
2617                         } else {
2618                                 if ((nvlist_lookup_string(lnvl, propname,
2619                                     &lvstr) == ENOENT) ||
2620                                     (nvlist_lookup_string(rnvl, propname,
2621                                     &rvstr) == ENOENT)) {
2622                                         goto compare_nums;
2623                                 }
2624                                 rc = strcmp(lvstr, rvstr);
2625                         }
2626                         break;
2627                 case ZFS_PROP_USED:
2628                 case ZFS_PROP_QUOTA:
2629                         if (!us_populated)
2630                                 break;
2631                         if (prop == ZFS_PROP_USED)
2632                                 propname = "used";
2633                         else
2634                                 propname = "quota";
2635                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2636                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2637                         if (rv64 != lv64)
2638                                 rc = (rv64 < lv64) ? 1 : -1;
2639                         break;
2640
2641                 default:
2642                         break;
2643                 }
2644
2645                 if (rc != 0) {
2646                         if (rc < 0)
2647                                 return (reverse ? 1 : -1);
2648                         else
2649                                 return (reverse ? -1 : 1);
2650                 }
2651         }
2652
2653         /*
2654          * If entries still seem to be the same, check if they are of the same
2655          * type (smbentity is added only if we are doing SID to POSIX ID
2656          * translation where we can have duplicate type/name combinations).
2657          */
2658         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2659             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2660             lvb != rvb)
2661                 return (lvb < rvb ? -1 : 1);
2662
2663         return (0);
2664 }
2665
2666 static boolean_t
2667 zfs_prop_is_user(unsigned p)
2668 {
2669         return (p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA ||
2670             p == ZFS_PROP_USEROBJUSED || p == ZFS_PROP_USEROBJQUOTA);
2671 }
2672
2673 static boolean_t
2674 zfs_prop_is_group(unsigned p)
2675 {
2676         return (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA ||
2677             p == ZFS_PROP_GROUPOBJUSED || p == ZFS_PROP_GROUPOBJQUOTA);
2678 }
2679
2680 static boolean_t
2681 zfs_prop_is_project(unsigned p)
2682 {
2683         return (p == ZFS_PROP_PROJECTUSED || p == ZFS_PROP_PROJECTQUOTA ||
2684             p == ZFS_PROP_PROJECTOBJUSED || p == ZFS_PROP_PROJECTOBJQUOTA);
2685 }
2686
2687 static inline const char *
2688 us_type2str(unsigned field_type)
2689 {
2690         switch (field_type) {
2691         case USTYPE_PSX_USR:
2692                 return ("POSIX User");
2693         case USTYPE_PSX_GRP:
2694                 return ("POSIX Group");
2695         case USTYPE_SMB_USR:
2696                 return ("SMB User");
2697         case USTYPE_SMB_GRP:
2698                 return ("SMB Group");
2699         case USTYPE_PROJ:
2700                 return ("Project");
2701         default:
2702                 return ("Undefined");
2703         }
2704 }
2705
2706 static int
2707 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2708 {
2709         us_cbdata_t *cb = (us_cbdata_t *)arg;
2710         zfs_userquota_prop_t prop = cb->cb_prop;
2711         char *name = NULL;
2712         char *propname;
2713         char sizebuf[32];
2714         us_node_t *node;
2715         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2716         uu_avl_t *avl = cb->cb_avl;
2717         uu_avl_index_t idx;
2718         nvlist_t *props;
2719         us_node_t *n;
2720         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2721         unsigned type = 0;
2722         const char *typestr;
2723         size_t namelen;
2724         size_t typelen;
2725         size_t sizelen;
2726         int typeidx, nameidx, sizeidx;
2727         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2728         boolean_t smbentity = B_FALSE;
2729
2730         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2731                 nomem();
2732         node = safe_malloc(sizeof (us_node_t));
2733         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2734         node->usn_nvl = props;
2735
2736         if (domain != NULL && domain[0] != '\0') {
2737 #ifdef HAVE_IDMAP
2738                 /* SMB */
2739                 char sid[MAXNAMELEN + 32];
2740                 uid_t id;
2741                 uint64_t classes;
2742                 int err;
2743                 directory_error_t e;
2744
2745                 smbentity = B_TRUE;
2746
2747                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2748
2749                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2750                         type = USTYPE_SMB_GRP;
2751                         err = sid_to_id(sid, B_FALSE, &id);
2752                 } else {
2753                         type = USTYPE_SMB_USR;
2754                         err = sid_to_id(sid, B_TRUE, &id);
2755                 }
2756
2757                 if (err == 0) {
2758                         rid = id;
2759                         if (!cb->cb_sid2posix) {
2760                                 e = directory_name_from_sid(NULL, sid, &name,
2761                                     &classes);
2762                                 if (e != NULL)
2763                                         directory_error_free(e);
2764                                 if (name == NULL)
2765                                         name = sid;
2766                         }
2767                 }
2768 #else
2769                 nvlist_free(props);
2770                 free(node);
2771
2772                 return (-1);
2773 #endif /* HAVE_IDMAP */
2774         }
2775
2776         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2777                 /* POSIX or -i */
2778                 if (zfs_prop_is_group(prop)) {
2779                         type = USTYPE_PSX_GRP;
2780                         if (!cb->cb_numname) {
2781                                 struct group *g;
2782
2783                                 if ((g = getgrgid(rid)) != NULL)
2784                                         name = g->gr_name;
2785                         }
2786                 } else if (zfs_prop_is_user(prop)) {
2787                         type = USTYPE_PSX_USR;
2788                         if (!cb->cb_numname) {
2789                                 struct passwd *p;
2790
2791                                 if ((p = getpwuid(rid)) != NULL)
2792                                         name = p->pw_name;
2793                         }
2794                 } else {
2795                         type = USTYPE_PROJ;
2796                 }
2797         }
2798
2799         /*
2800          * Make sure that the type/name combination is unique when doing
2801          * SID to POSIX ID translation (hence changing the type from SMB to
2802          * POSIX).
2803          */
2804         if (cb->cb_sid2posix &&
2805             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2806                 nomem();
2807
2808         /* Calculate/update width of TYPE field */
2809         typestr = us_type2str(type);
2810         typelen = strlen(gettext(typestr));
2811         typeidx = us_field_index("type");
2812         if (typelen > cb->cb_width[typeidx])
2813                 cb->cb_width[typeidx] = typelen;
2814         if (nvlist_add_uint32(props, "type", type) != 0)
2815                 nomem();
2816
2817         /* Calculate/update width of NAME field */
2818         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2819                 if (nvlist_add_uint64(props, "name", rid) != 0)
2820                         nomem();
2821                 namelen = snprintf(NULL, 0, "%u", rid);
2822         } else {
2823                 if (nvlist_add_string(props, "name", name) != 0)
2824                         nomem();
2825                 namelen = strlen(name);
2826         }
2827         nameidx = us_field_index("name");
2828         if (nameidx >= 0 && namelen > cb->cb_width[nameidx])
2829                 cb->cb_width[nameidx] = namelen;
2830
2831         /*
2832          * Check if this type/name combination is in the list and update it;
2833          * otherwise add new node to the list.
2834          */
2835         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2836                 uu_avl_insert(avl, node, idx);
2837         } else {
2838                 nvlist_free(props);
2839                 free(node);
2840                 node = n;
2841                 props = node->usn_nvl;
2842         }
2843
2844         /* Calculate/update width of USED/QUOTA fields */
2845         if (cb->cb_nicenum) {
2846                 if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
2847                     prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA ||
2848                     prop == ZFS_PROP_PROJECTUSED ||
2849                     prop == ZFS_PROP_PROJECTQUOTA) {
2850                         zfs_nicebytes(space, sizebuf, sizeof (sizebuf));
2851                 } else {
2852                         zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2853                 }
2854         } else {
2855                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu",
2856                     (u_longlong_t)space);
2857         }
2858         sizelen = strlen(sizebuf);
2859         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
2860             prop == ZFS_PROP_PROJECTUSED) {
2861                 propname = "used";
2862                 if (!nvlist_exists(props, "quota"))
2863                         (void) nvlist_add_uint64(props, "quota", 0);
2864         } else if (prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA ||
2865             prop == ZFS_PROP_PROJECTQUOTA) {
2866                 propname = "quota";
2867                 if (!nvlist_exists(props, "used"))
2868                         (void) nvlist_add_uint64(props, "used", 0);
2869         } else if (prop == ZFS_PROP_USEROBJUSED ||
2870             prop == ZFS_PROP_GROUPOBJUSED || prop == ZFS_PROP_PROJECTOBJUSED) {
2871                 propname = "objused";
2872                 if (!nvlist_exists(props, "objquota"))
2873                         (void) nvlist_add_uint64(props, "objquota", 0);
2874         } else if (prop == ZFS_PROP_USEROBJQUOTA ||
2875             prop == ZFS_PROP_GROUPOBJQUOTA ||
2876             prop == ZFS_PROP_PROJECTOBJQUOTA) {
2877                 propname = "objquota";
2878                 if (!nvlist_exists(props, "objused"))
2879                         (void) nvlist_add_uint64(props, "objused", 0);
2880         } else {
2881                 return (-1);
2882         }
2883         sizeidx = us_field_index(propname);
2884         if (sizeidx >= 0 && sizelen > cb->cb_width[sizeidx])
2885                 cb->cb_width[sizeidx] = sizelen;
2886
2887         if (nvlist_add_uint64(props, propname, space) != 0)
2888                 nomem();
2889
2890         return (0);
2891 }
2892
2893 static void
2894 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2895     size_t *width, us_node_t *node)
2896 {
2897         nvlist_t *nvl = node->usn_nvl;
2898         char valstr[MAXNAMELEN];
2899         boolean_t first = B_TRUE;
2900         int cfield = 0;
2901         int field;
2902         uint32_t ustype;
2903
2904         /* Check type */
2905         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2906         if (!(ustype & types))
2907                 return;
2908
2909         while ((field = fields[cfield]) != USFIELD_LAST) {
2910                 nvpair_t *nvp = NULL;
2911                 data_type_t type;
2912                 uint32_t val32;
2913                 uint64_t val64;
2914                 char *strval = "-";
2915
2916                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2917                         if (strcmp(nvpair_name(nvp),
2918                             us_field_names[field]) == 0)
2919                                 break;
2920                 }
2921
2922                 type = nvp == NULL ? DATA_TYPE_UNKNOWN : nvpair_type(nvp);
2923                 switch (type) {
2924                 case DATA_TYPE_UINT32:
2925                         (void) nvpair_value_uint32(nvp, &val32);
2926                         break;
2927                 case DATA_TYPE_UINT64:
2928                         (void) nvpair_value_uint64(nvp, &val64);
2929                         break;
2930                 case DATA_TYPE_STRING:
2931                         (void) nvpair_value_string(nvp, &strval);
2932                         break;
2933                 case DATA_TYPE_UNKNOWN:
2934                         break;
2935                 default:
2936                         (void) fprintf(stderr, "invalid data type\n");
2937                 }
2938
2939                 switch (field) {
2940                 case USFIELD_TYPE:
2941                         if (type == DATA_TYPE_UINT32)
2942                                 strval = (char *)us_type2str(val32);
2943                         break;
2944                 case USFIELD_NAME:
2945                         if (type == DATA_TYPE_UINT64) {
2946                                 (void) sprintf(valstr, "%llu",
2947                                     (u_longlong_t)val64);
2948                                 strval = valstr;
2949                         }
2950                         break;
2951                 case USFIELD_USED:
2952                 case USFIELD_QUOTA:
2953                         if (type == DATA_TYPE_UINT64) {
2954                                 if (parsable) {
2955                                         (void) sprintf(valstr, "%llu",
2956                                             (u_longlong_t)val64);
2957                                         strval = valstr;
2958                                 } else if (field == USFIELD_QUOTA &&
2959                                     val64 == 0) {
2960                                         strval = "none";
2961                                 } else {
2962                                         zfs_nicebytes(val64, valstr,
2963                                             sizeof (valstr));
2964                                         strval = valstr;
2965                                 }
2966                         }
2967                         break;
2968                 case USFIELD_OBJUSED:
2969                 case USFIELD_OBJQUOTA:
2970                         if (type == DATA_TYPE_UINT64) {
2971                                 if (parsable) {
2972                                         (void) sprintf(valstr, "%llu",
2973                                             (u_longlong_t)val64);
2974                                         strval = valstr;
2975                                 } else if (field == USFIELD_OBJQUOTA &&
2976                                     val64 == 0) {
2977                                         strval = "none";
2978                                 } else {
2979                                         zfs_nicenum(val64, valstr,
2980                                             sizeof (valstr));
2981                                         strval = valstr;
2982                                 }
2983                         }
2984                         break;
2985                 }
2986
2987                 if (!first) {
2988                         if (scripted)
2989                                 (void) printf("\t");
2990                         else
2991                                 (void) printf("  ");
2992                 }
2993                 if (scripted)
2994                         (void) printf("%s", strval);
2995                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2996                         (void) printf("%-*s", (int)width[field], strval);
2997                 else
2998                         (void) printf("%*s", (int)width[field], strval);
2999
3000                 first = B_FALSE;
3001                 cfield++;
3002         }
3003
3004         (void) printf("\n");
3005 }
3006
3007 static void
3008 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
3009     size_t *width, boolean_t rmnode, uu_avl_t *avl)
3010 {
3011         us_node_t *node;
3012         const char *col;
3013         int cfield = 0;
3014         int field;
3015
3016         if (!scripted) {
3017                 boolean_t first = B_TRUE;
3018
3019                 while ((field = fields[cfield]) != USFIELD_LAST) {
3020                         col = gettext(us_field_hdr[field]);
3021                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
3022                                 (void) printf(first ? "%-*s" : "  %-*s",
3023                                     (int)width[field], col);
3024                         } else {
3025                                 (void) printf(first ? "%*s" : "  %*s",
3026                                     (int)width[field], col);
3027                         }
3028                         first = B_FALSE;
3029                         cfield++;
3030                 }
3031                 (void) printf("\n");
3032         }
3033
3034         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
3035                 print_us_node(scripted, parsable, fields, types, width, node);
3036                 if (rmnode)
3037                         nvlist_free(node->usn_nvl);
3038         }
3039 }
3040
3041 static int
3042 zfs_do_userspace(int argc, char **argv)
3043 {
3044         zfs_handle_t *zhp;
3045         zfs_userquota_prop_t p;
3046         uu_avl_pool_t *avl_pool;
3047         uu_avl_t *avl_tree;
3048         uu_avl_walk_t *walk;
3049         char *delim;
3050         char deffields[] = "type,name,used,quota,objused,objquota";
3051         char *ofield = NULL;
3052         char *tfield = NULL;
3053         int cfield = 0;
3054         int fields[256];
3055         int i;
3056         boolean_t scripted = B_FALSE;
3057         boolean_t prtnum = B_FALSE;
3058         boolean_t parsable = B_FALSE;
3059         boolean_t sid2posix = B_FALSE;
3060         int ret = 0;
3061         int c;
3062         zfs_sort_column_t *sortcol = NULL;
3063         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
3064         us_cbdata_t cb;
3065         us_node_t *node;
3066         us_node_t *rmnode;
3067         uu_list_pool_t *listpool;
3068         uu_list_t *list;
3069         uu_avl_index_t idx = 0;
3070         uu_list_index_t idx2 = 0;
3071
3072         if (argc < 2)
3073                 usage(B_FALSE);
3074
3075         if (strcmp(argv[0], "groupspace") == 0) {
3076                 /* Toggle default group types */
3077                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
3078         } else if (strcmp(argv[0], "projectspace") == 0) {
3079                 types = USTYPE_PROJ;
3080                 prtnum = B_TRUE;
3081         }
3082
3083         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
3084                 switch (c) {
3085                 case 'n':
3086                         if (types == USTYPE_PROJ) {
3087                                 (void) fprintf(stderr,
3088                                     gettext("invalid option 'n'\n"));
3089                                 usage(B_FALSE);
3090                         }
3091                         prtnum = B_TRUE;
3092                         break;
3093                 case 'H':
3094                         scripted = B_TRUE;
3095                         break;
3096                 case 'p':
3097                         parsable = B_TRUE;
3098                         break;
3099                 case 'o':
3100                         ofield = optarg;
3101                         break;
3102                 case 's':
3103                 case 'S':
3104                         if (zfs_add_sort_column(&sortcol, optarg,
3105                             c == 's' ? B_FALSE : B_TRUE) != 0) {
3106                                 (void) fprintf(stderr,
3107                                     gettext("invalid field '%s'\n"), optarg);
3108                                 usage(B_FALSE);
3109                         }
3110                         break;
3111                 case 't':
3112                         if (types == USTYPE_PROJ) {
3113                                 (void) fprintf(stderr,
3114                                     gettext("invalid option 't'\n"));
3115                                 usage(B_FALSE);
3116                         }
3117                         tfield = optarg;
3118                         break;
3119                 case 'i':
3120                         if (types == USTYPE_PROJ) {
3121                                 (void) fprintf(stderr,
3122                                     gettext("invalid option 'i'\n"));
3123                                 usage(B_FALSE);
3124                         }
3125                         sid2posix = B_TRUE;
3126                         break;
3127                 case ':':
3128                         (void) fprintf(stderr, gettext("missing argument for "
3129                             "'%c' option\n"), optopt);
3130                         usage(B_FALSE);
3131                         break;
3132                 case '?':
3133                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3134                             optopt);
3135                         usage(B_FALSE);
3136                 }
3137         }
3138
3139         argc -= optind;
3140         argv += optind;
3141
3142         if (argc < 1) {
3143                 (void) fprintf(stderr, gettext("missing dataset name\n"));
3144                 usage(B_FALSE);
3145         }
3146         if (argc > 1) {
3147                 (void) fprintf(stderr, gettext("too many arguments\n"));
3148                 usage(B_FALSE);
3149         }
3150
3151         /* Use default output fields if not specified using -o */
3152         if (ofield == NULL)
3153                 ofield = deffields;
3154         do {
3155                 if ((delim = strchr(ofield, ',')) != NULL)
3156                         *delim = '\0';
3157                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
3158                         (void) fprintf(stderr, gettext("invalid type '%s' "
3159                             "for -o option\n"), ofield);
3160                         return (-1);
3161                 }
3162                 if (delim != NULL)
3163                         ofield = delim + 1;
3164         } while (delim != NULL);
3165         fields[cfield] = USFIELD_LAST;
3166
3167         /* Override output types (-t option) */
3168         if (tfield != NULL) {
3169                 types = 0;
3170
3171                 do {
3172                         boolean_t found = B_FALSE;
3173
3174                         if ((delim = strchr(tfield, ',')) != NULL)
3175                                 *delim = '\0';
3176                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
3177                             i++) {
3178                                 if (strcmp(tfield, us_type_names[i]) == 0) {
3179                                         found = B_TRUE;
3180                                         types |= us_type_bits[i];
3181                                         break;
3182                                 }
3183                         }
3184                         if (!found) {
3185                                 (void) fprintf(stderr, gettext("invalid type "
3186                                     "'%s' for -t option\n"), tfield);
3187                                 return (-1);
3188                         }
3189                         if (delim != NULL)
3190                                 tfield = delim + 1;
3191                 } while (delim != NULL);
3192         }
3193
3194         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM |
3195             ZFS_TYPE_SNAPSHOT)) == NULL)
3196                 return (1);
3197         if (zhp->zfs_head_type != ZFS_TYPE_FILESYSTEM) {
3198                 (void) fprintf(stderr, gettext("operation is only applicable "
3199                     "to filesystems and their snapshots\n"));
3200                 zfs_close(zhp);
3201                 return (1);
3202         }
3203
3204         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
3205             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
3206                 nomem();
3207         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
3208                 nomem();
3209
3210         /* Always add default sorting columns */
3211         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
3212         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
3213
3214         cb.cb_sortcol = sortcol;
3215         cb.cb_numname = prtnum;
3216         cb.cb_nicenum = !parsable;
3217         cb.cb_avl_pool = avl_pool;
3218         cb.cb_avl = avl_tree;
3219         cb.cb_sid2posix = sid2posix;
3220
3221         for (i = 0; i < USFIELD_LAST; i++)
3222                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
3223
3224         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
3225                 if ((zfs_prop_is_user(p) &&
3226                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
3227                     (zfs_prop_is_group(p) &&
3228                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))) ||
3229                     (zfs_prop_is_project(p) && types != USTYPE_PROJ))
3230                         continue;
3231
3232                 cb.cb_prop = p;
3233                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0) {
3234                         zfs_close(zhp);
3235                         return (ret);
3236                 }
3237         }
3238         zfs_close(zhp);
3239
3240         /* Sort the list */
3241         if ((node = uu_avl_first(avl_tree)) == NULL)
3242                 return (0);
3243
3244         us_populated = B_TRUE;
3245
3246         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
3247             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
3248         list = uu_list_create(listpool, NULL, UU_DEFAULT);
3249         uu_list_node_init(node, &node->usn_listnode, listpool);
3250
3251         while (node != NULL) {
3252                 rmnode = node;
3253                 node = uu_avl_next(avl_tree, node);
3254                 uu_avl_remove(avl_tree, rmnode);
3255                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
3256                         uu_list_insert(list, rmnode, idx2);
3257         }
3258
3259         for (node = uu_list_first(list); node != NULL;
3260             node = uu_list_next(list, node)) {
3261                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
3262
3263                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
3264                         uu_avl_insert(avl_tree, node, idx);
3265         }
3266
3267         uu_list_destroy(list);
3268         uu_list_pool_destroy(listpool);
3269
3270         /* Print and free node nvlist memory */
3271         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
3272             cb.cb_avl);
3273
3274         zfs_free_sort_columns(sortcol);
3275
3276         /* Clean up the AVL tree */
3277         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
3278                 nomem();
3279
3280         while ((node = uu_avl_walk_next(walk)) != NULL) {
3281                 uu_avl_remove(cb.cb_avl, node);
3282                 free(node);
3283         }
3284
3285         uu_avl_walk_end(walk);
3286         uu_avl_destroy(avl_tree);
3287         uu_avl_pool_destroy(avl_pool);
3288
3289         return (ret);
3290 }
3291
3292 /*
3293  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property]
3294  *      [-t type[,...]] [filesystem|volume|snapshot] ...
3295  *
3296  *      -H      Scripted mode; elide headers and separate columns by tabs
3297  *      -p      Display values in parsable (literal) format.
3298  *      -r      Recurse over all children
3299  *      -d      Limit recursion by depth.
3300  *      -o      Control which fields to display.
3301  *      -s      Specify sort columns, descending order.
3302  *      -S      Specify sort columns, ascending order.
3303  *      -t      Control which object types to display.
3304  *
3305  * When given no arguments, list all filesystems in the system.
3306  * Otherwise, list the specified datasets, optionally recursing down them if
3307  * '-r' is specified.
3308  */
3309 typedef struct list_cbdata {
3310         boolean_t       cb_first;
3311         boolean_t       cb_literal;
3312         boolean_t       cb_scripted;
3313         zprop_list_t    *cb_proplist;
3314 } list_cbdata_t;
3315
3316 /*
3317  * Given a list of columns to display, output appropriate headers for each one.
3318  */
3319 static void
3320 print_header(list_cbdata_t *cb)
3321 {
3322         zprop_list_t *pl = cb->cb_proplist;
3323         char headerbuf[ZFS_MAXPROPLEN];
3324         const char *header;
3325         int i;
3326         boolean_t first = B_TRUE;
3327         boolean_t right_justify;
3328
3329         for (; pl != NULL; pl = pl->pl_next) {
3330                 if (!first) {
3331                         (void) printf("  ");
3332                 } else {
3333                         first = B_FALSE;
3334                 }
3335
3336                 right_justify = B_FALSE;
3337                 if (pl->pl_prop != ZPROP_INVAL) {
3338                         header = zfs_prop_column_name(pl->pl_prop);
3339                         right_justify = zfs_prop_align_right(pl->pl_prop);
3340                 } else {
3341                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
3342                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
3343                         headerbuf[i] = '\0';
3344                         header = headerbuf;
3345                 }
3346
3347                 if (pl->pl_next == NULL && !right_justify)
3348                         (void) printf("%s", header);
3349                 else if (right_justify)
3350                         (void) printf("%*s", (int)pl->pl_width, header);
3351                 else
3352                         (void) printf("%-*s", (int)pl->pl_width, header);
3353         }
3354
3355         (void) printf("\n");
3356 }
3357
3358 /*
3359  * Given a dataset and a list of fields, print out all the properties according
3360  * to the described layout.
3361  */
3362 static void
3363 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
3364 {
3365         zprop_list_t *pl = cb->cb_proplist;
3366         boolean_t first = B_TRUE;
3367         char property[ZFS_MAXPROPLEN];
3368         nvlist_t *userprops = zfs_get_user_props(zhp);
3369         nvlist_t *propval;
3370         char *propstr;
3371         boolean_t right_justify;
3372
3373         for (; pl != NULL; pl = pl->pl_next) {
3374                 if (!first) {
3375                         if (cb->cb_scripted)
3376                                 (void) printf("\t");
3377                         else
3378                                 (void) printf("  ");
3379                 } else {
3380                         first = B_FALSE;
3381                 }
3382
3383                 if (pl->pl_prop == ZFS_PROP_NAME) {
3384                         (void) strlcpy(property, zfs_get_name(zhp),
3385                             sizeof (property));
3386                         propstr = property;
3387                         right_justify = zfs_prop_align_right(pl->pl_prop);
3388                 } else if (pl->pl_prop != ZPROP_INVAL) {
3389                         if (zfs_prop_get(zhp, pl->pl_prop, property,
3390                             sizeof (property), NULL, NULL, 0,
3391                             cb->cb_literal) != 0)
3392                                 propstr = "-";
3393                         else
3394                                 propstr = property;
3395                         right_justify = zfs_prop_align_right(pl->pl_prop);
3396                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
3397                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
3398                             property, sizeof (property), cb->cb_literal) != 0)
3399                                 propstr = "-";
3400                         else
3401                                 propstr = property;
3402                         right_justify = B_TRUE;
3403                 } else if (zfs_prop_written(pl->pl_user_prop)) {
3404                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
3405                             property, sizeof (property), cb->cb_literal) != 0)
3406                                 propstr = "-";
3407                         else
3408                                 propstr = property;
3409                         right_justify = B_TRUE;
3410                 } else {
3411                         if (nvlist_lookup_nvlist(userprops,
3412                             pl->pl_user_prop, &propval) != 0)
3413                                 propstr = "-";
3414                         else
3415                                 verify(nvlist_lookup_string(propval,
3416                                     ZPROP_VALUE, &propstr) == 0);
3417                         right_justify = B_FALSE;
3418                 }
3419
3420                 /*
3421                  * If this is being called in scripted mode, or if this is the
3422                  * last column and it is left-justified, don't include a width
3423                  * format specifier.
3424                  */
3425                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3426                         (void) printf("%s", propstr);
3427                 else if (right_justify)
3428                         (void) printf("%*s", (int)pl->pl_width, propstr);
3429                 else
3430                         (void) printf("%-*s", (int)pl->pl_width, propstr);
3431         }
3432
3433         (void) printf("\n");
3434 }
3435
3436 /*
3437  * Generic callback function to list a dataset or snapshot.
3438  */
3439 static int
3440 list_callback(zfs_handle_t *zhp, void *data)
3441 {
3442         list_cbdata_t *cbp = data;
3443
3444         if (cbp->cb_first) {
3445                 if (!cbp->cb_scripted)
3446                         print_header(cbp);
3447                 cbp->cb_first = B_FALSE;
3448         }
3449
3450         print_dataset(zhp, cbp);
3451
3452         return (0);
3453 }
3454
3455 static int
3456 zfs_do_list(int argc, char **argv)
3457 {
3458         int c;
3459         static char default_fields[] =
3460             "name,used,available,referenced,mountpoint";
3461         int types = ZFS_TYPE_DATASET;
3462         boolean_t types_specified = B_FALSE;
3463         char *fields = NULL;
3464         list_cbdata_t cb = { 0 };
3465         char *value;
3466         int limit = 0;
3467         int ret = 0;
3468         zfs_sort_column_t *sortcol = NULL;
3469         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3470
3471         /* check options */
3472         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3473                 switch (c) {
3474                 case 'o':
3475                         fields = optarg;
3476                         break;
3477                 case 'p':
3478                         cb.cb_literal = B_TRUE;
3479                         flags |= ZFS_ITER_LITERAL_PROPS;
3480                         break;
3481                 case 'd':
3482                         limit = parse_depth(optarg, &flags);
3483                         break;
3484                 case 'r':
3485                         flags |= ZFS_ITER_RECURSE;
3486                         break;
3487                 case 'H':
3488                         cb.cb_scripted = B_TRUE;
3489                         break;
3490                 case 's':
3491                         if (zfs_add_sort_column(&sortcol, optarg,
3492                             B_FALSE) != 0) {
3493                                 (void) fprintf(stderr,
3494                                     gettext("invalid property '%s'\n"), optarg);
3495                                 usage(B_FALSE);
3496                         }
3497                         break;
3498                 case 'S':
3499                         if (zfs_add_sort_column(&sortcol, optarg,
3500                             B_TRUE) != 0) {
3501                                 (void) fprintf(stderr,
3502                                     gettext("invalid property '%s'\n"), optarg);
3503                                 usage(B_FALSE);
3504                         }
3505                         break;
3506                 case 't':
3507                         types = 0;
3508                         types_specified = B_TRUE;
3509                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3510                         while (*optarg != '\0') {
3511                                 static char *type_subopts[] = { "filesystem",
3512                                     "volume", "snapshot", "snap", "bookmark",
3513                                     "all", NULL };
3514
3515                                 switch (getsubopt(&optarg, type_subopts,
3516                                     &value)) {
3517                                 case 0:
3518                                         types |= ZFS_TYPE_FILESYSTEM;
3519                                         break;
3520                                 case 1:
3521                                         types |= ZFS_TYPE_VOLUME;
3522                                         break;
3523                                 case 2:
3524                                 case 3:
3525                                         types |= ZFS_TYPE_SNAPSHOT;
3526                                         break;
3527                                 case 4:
3528                                         types |= ZFS_TYPE_BOOKMARK;
3529                                         break;
3530                                 case 5:
3531                                         types = ZFS_TYPE_DATASET |
3532                                             ZFS_TYPE_BOOKMARK;
3533                                         break;
3534                                 default:
3535                                         (void) fprintf(stderr,
3536                                             gettext("invalid type '%s'\n"),
3537                                             value);
3538                                         usage(B_FALSE);
3539                                 }
3540                         }
3541                         break;
3542                 case ':':
3543                         (void) fprintf(stderr, gettext("missing argument for "
3544                             "'%c' option\n"), optopt);
3545                         usage(B_FALSE);
3546                         break;
3547                 case '?':
3548                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3549                             optopt);
3550                         usage(B_FALSE);
3551                 }
3552         }
3553
3554         argc -= optind;
3555         argv += optind;
3556
3557         if (fields == NULL)
3558                 fields = default_fields;
3559
3560         /*
3561          * If we are only going to list snapshot names and sort by name,
3562          * then we can use faster version.
3563          */
3564         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3565                 flags |= ZFS_ITER_SIMPLE;
3566
3567         /*
3568          * If "-o space" and no types were specified, don't display snapshots.
3569          */
3570         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3571                 types &= ~ZFS_TYPE_SNAPSHOT;
3572
3573         /*
3574          * Handle users who want to list all snapshots or bookmarks
3575          * of the current dataset (ex. 'zfs list -t snapshot <dataset>').
3576          */
3577         if ((types == ZFS_TYPE_SNAPSHOT || types == ZFS_TYPE_BOOKMARK) &&
3578             argc > 0 && (flags & ZFS_ITER_RECURSE) == 0 && limit == 0) {
3579                 flags |= (ZFS_ITER_DEPTH_LIMIT | ZFS_ITER_RECURSE);
3580                 limit = 1;
3581         }
3582
3583         /*
3584          * If the user specifies '-o all', the zprop_get_list() doesn't
3585          * normally include the name of the dataset.  For 'zfs list', we always
3586          * want this property to be first.
3587          */
3588         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3589             != 0)
3590                 usage(B_FALSE);
3591
3592         cb.cb_first = B_TRUE;
3593
3594         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3595             limit, list_callback, &cb);
3596
3597         zprop_free_list(cb.cb_proplist);
3598         zfs_free_sort_columns(sortcol);
3599
3600         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3601                 (void) fprintf(stderr, gettext("no datasets available\n"));
3602
3603         return (ret);
3604 }
3605
3606 /*
3607  * zfs rename [-fu] <fs | snap | vol> <fs | snap | vol>
3608  * zfs rename [-f] -p <fs | vol> <fs | vol>
3609  * zfs rename [-u] -r <snap> <snap>
3610  *
3611  * Renames the given dataset to another of the same type.
3612  *
3613  * The '-p' flag creates all the non-existing ancestors of the target first.
3614  * The '-u' flag prevents file systems from being remounted during rename.
3615  */
3616 /* ARGSUSED */
3617 static int
3618 zfs_do_rename(int argc, char **argv)
3619 {
3620         zfs_handle_t *zhp;
3621         renameflags_t flags = { 0 };
3622         int c;
3623         int ret = 0;
3624         int types;
3625         boolean_t parents = B_FALSE;
3626
3627         /* check options */
3628         while ((c = getopt(argc, argv, "pruf")) != -1) {
3629                 switch (c) {
3630                 case 'p':
3631                         parents = B_TRUE;
3632                         break;
3633                 case 'r':
3634                         flags.recursive = B_TRUE;
3635                         break;
3636                 case 'u':
3637                         flags.nounmount = B_TRUE;
3638                         break;
3639                 case 'f':
3640                         flags.forceunmount = B_TRUE;
3641                         break;
3642                 case '?':
3643                 default:
3644                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3645                             optopt);
3646                         usage(B_FALSE);
3647                 }
3648         }
3649
3650         argc -= optind;
3651         argv += optind;
3652
3653         /* check number of arguments */
3654         if (argc < 1) {
3655                 (void) fprintf(stderr, gettext("missing source dataset "
3656                     "argument\n"));
3657                 usage(B_FALSE);
3658         }
3659         if (argc < 2) {
3660                 (void) fprintf(stderr, gettext("missing target dataset "
3661                     "argument\n"));
3662                 usage(B_FALSE);
3663         }
3664         if (argc > 2) {
3665                 (void) fprintf(stderr, gettext("too many arguments\n"));
3666                 usage(B_FALSE);
3667         }
3668
3669         if (flags.recursive && parents) {
3670                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3671                     "exclusive\n"));
3672                 usage(B_FALSE);
3673         }
3674
3675         if (flags.nounmount && parents) {
3676                 (void) fprintf(stderr, gettext("-u and -p options are mutually "
3677                     "exclusive\n"));
3678                 usage(B_FALSE);
3679         }
3680
3681         if (flags.recursive && strchr(argv[0], '@') == 0) {
3682                 (void) fprintf(stderr, gettext("source dataset for recursive "
3683                     "rename must be a snapshot\n"));
3684                 usage(B_FALSE);
3685         }
3686
3687         if (flags.nounmount)
3688                 types = ZFS_TYPE_FILESYSTEM;
3689         else if (parents)
3690                 types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
3691         else
3692                 types = ZFS_TYPE_DATASET;
3693
3694         if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
3695                 return (1);
3696
3697         /* If we were asked and the name looks good, try to create ancestors. */
3698         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3699             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3700                 zfs_close(zhp);
3701                 return (1);
3702         }
3703
3704         ret = (zfs_rename(zhp, argv[1], flags) != 0);
3705
3706         zfs_close(zhp);
3707         return (ret);
3708 }
3709
3710 /*
3711  * zfs promote <fs>
3712  *
3713  * Promotes the given clone fs to be the parent
3714  */
3715 /* ARGSUSED */
3716 static int
3717 zfs_do_promote(int argc, char **argv)
3718 {
3719         zfs_handle_t *zhp;
3720         int ret = 0;
3721
3722         /* check options */
3723         if (argc > 1 && argv[1][0] == '-') {
3724                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3725                     argv[1][1]);
3726                 usage(B_FALSE);
3727         }
3728
3729         /* check number of arguments */
3730         if (argc < 2) {
3731                 (void) fprintf(stderr, gettext("missing clone filesystem"
3732                     " argument\n"));
3733                 usage(B_FALSE);
3734         }
3735         if (argc > 2) {
3736                 (void) fprintf(stderr, gettext("too many arguments\n"));
3737                 usage(B_FALSE);
3738         }
3739
3740         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3741         if (zhp == NULL)
3742                 return (1);
3743
3744         ret = (zfs_promote(zhp) != 0);
3745
3746
3747         zfs_close(zhp);
3748         return (ret);
3749 }
3750
3751 static int
3752 zfs_do_redact(int argc, char **argv)
3753 {
3754         char *snap = NULL;
3755         char *bookname = NULL;
3756         char **rsnaps = NULL;
3757         int numrsnaps = 0;
3758         argv++;
3759         argc--;
3760         if (argc < 3) {
3761                 (void) fprintf(stderr, gettext("too few arguments\n"));
3762                 usage(B_FALSE);
3763         }
3764
3765         snap = argv[0];
3766         bookname = argv[1];
3767         rsnaps = argv + 2;
3768         numrsnaps = argc - 2;
3769
3770         nvlist_t *rsnapnv = fnvlist_alloc();
3771
3772         for (int i = 0; i < numrsnaps; i++) {
3773                 fnvlist_add_boolean(rsnapnv, rsnaps[i]);
3774         }
3775
3776         int err = lzc_redact(snap, bookname, rsnapnv);
3777         fnvlist_free(rsnapnv);
3778
3779         switch (err) {
3780         case 0:
3781                 break;
3782         case ENOENT:
3783                 (void) fprintf(stderr,
3784                     gettext("provided snapshot %s does not exist\n"), snap);
3785                 break;
3786         case EEXIST:
3787                 (void) fprintf(stderr, gettext("specified redaction bookmark "
3788                     "(%s) provided already exists\n"), bookname);
3789                 break;
3790         case ENAMETOOLONG:
3791                 (void) fprintf(stderr, gettext("provided bookmark name cannot "
3792                     "be used, final name would be too long\n"));
3793                 break;
3794         case E2BIG:
3795                 (void) fprintf(stderr, gettext("too many redaction snapshots "
3796                     "specified\n"));
3797                 break;
3798         case EINVAL:
3799                 if (strchr(bookname, '#') != NULL)
3800                         (void) fprintf(stderr, gettext(
3801                             "redaction bookmark name must not contain '#'\n"));
3802                 else
3803                         (void) fprintf(stderr, gettext(
3804                             "redaction snapshot must be descendent of "
3805                             "snapshot being redacted\n"));
3806                 break;
3807         case EALREADY:
3808                 (void) fprintf(stderr, gettext("attempted to redact redacted "
3809                     "dataset or with respect to redacted dataset\n"));
3810                 break;
3811         case ENOTSUP:
3812                 (void) fprintf(stderr, gettext("redaction bookmarks feature "
3813                     "not enabled\n"));
3814                 break;
3815         case EXDEV:
3816                 (void) fprintf(stderr, gettext("potentially invalid redaction "
3817                     "snapshot; full dataset names required\n"));
3818                 break;
3819         default:
3820                 (void) fprintf(stderr, gettext("internal error: %s\n"),
3821                     strerror(errno));
3822         }
3823
3824         return (err);
3825 }
3826
3827 /*
3828  * zfs rollback [-rRf] <snapshot>
3829  *
3830  *      -r      Delete any intervening snapshots before doing rollback
3831  *      -R      Delete any snapshots and their clones
3832  *      -f      ignored for backwards compatibility
3833  *
3834  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3835  * since then and making it the active dataset.  If more recent snapshots exist,
3836  * the command will complain unless the '-r' flag is given.
3837  */
3838 typedef struct rollback_cbdata {
3839         uint64_t        cb_create;
3840         uint8_t         cb_younger_ds_printed;
3841         boolean_t       cb_first;
3842         int             cb_doclones;
3843         char            *cb_target;
3844         int             cb_error;
3845         boolean_t       cb_recurse;
3846 } rollback_cbdata_t;
3847
3848 static int
3849 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3850 {
3851         rollback_cbdata_t *cbp = data;
3852
3853         if (cbp->cb_first && cbp->cb_recurse) {
3854                 (void) fprintf(stderr, gettext("cannot rollback to "
3855                     "'%s': clones of previous snapshots exist\n"),
3856                     cbp->cb_target);
3857                 (void) fprintf(stderr, gettext("use '-R' to "
3858                     "force deletion of the following clones and "
3859                     "dependents:\n"));
3860                 cbp->cb_first = 0;
3861                 cbp->cb_error = 1;
3862         }
3863
3864         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3865
3866         zfs_close(zhp);
3867         return (0);
3868 }
3869
3870
3871 /*
3872  * Report some snapshots/bookmarks more recent than the one specified.
3873  * Used when '-r' is not specified. We reuse this same callback for the
3874  * snapshot dependents - if 'cb_dependent' is set, then this is a
3875  * dependent and we should report it without checking the transaction group.
3876  */
3877 static int
3878 rollback_check(zfs_handle_t *zhp, void *data)
3879 {
3880         rollback_cbdata_t *cbp = data;
3881         /*
3882          * Max number of younger snapshots and/or bookmarks to display before
3883          * we stop the iteration.
3884          */
3885         const uint8_t max_younger = 32;
3886
3887         if (cbp->cb_doclones) {
3888                 zfs_close(zhp);
3889                 return (0);
3890         }
3891
3892         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3893                 if (cbp->cb_first && !cbp->cb_recurse) {
3894                         (void) fprintf(stderr, gettext("cannot "
3895                             "rollback to '%s': more recent snapshots "
3896                             "or bookmarks exist\n"),
3897                             cbp->cb_target);
3898                         (void) fprintf(stderr, gettext("use '-r' to "
3899                             "force deletion of the following "
3900                             "snapshots and bookmarks:\n"));
3901                         cbp->cb_first = 0;
3902                         cbp->cb_error = 1;
3903                 }
3904
3905                 if (cbp->cb_recurse) {
3906                         if (zfs_iter_dependents(zhp, B_TRUE,
3907                             rollback_check_dependent, cbp) != 0) {
3908                                 zfs_close(zhp);
3909                                 return (-1);
3910                         }
3911                 } else {
3912                         (void) fprintf(stderr, "%s\n",
3913                             zfs_get_name(zhp));
3914                         cbp->cb_younger_ds_printed++;
3915                 }
3916         }
3917         zfs_close(zhp);
3918
3919         if (cbp->cb_younger_ds_printed == max_younger) {
3920                 /*
3921                  * This non-recursive rollback is going to fail due to the
3922                  * presence of snapshots and/or bookmarks that are younger than
3923                  * the rollback target.
3924                  * We printed some of the offending objects, now we stop
3925                  * zfs_iter_snapshot/bookmark iteration so we can fail fast and
3926                  * avoid iterating over the rest of the younger objects
3927                  */
3928                 (void) fprintf(stderr, gettext("Output limited to %d "
3929                     "snapshots/bookmarks\n"), max_younger);
3930                 return (-1);
3931         }
3932         return (0);
3933 }
3934
3935 static int
3936 zfs_do_rollback(int argc, char **argv)
3937 {
3938         int ret = 0;
3939         int c;
3940         boolean_t force = B_FALSE;
3941         rollback_cbdata_t cb = { 0 };
3942         zfs_handle_t *zhp, *snap;
3943         char parentname[ZFS_MAX_DATASET_NAME_LEN];
3944         char *delim;
3945         uint64_t min_txg = 0;
3946
3947         /* check options */
3948         while ((c = getopt(argc, argv, "rRf")) != -1) {
3949                 switch (c) {
3950                 case 'r':
3951                         cb.cb_recurse = 1;
3952                         break;
3953                 case 'R':
3954                         cb.cb_recurse = 1;
3955                         cb.cb_doclones = 1;
3956                         break;
3957                 case 'f':
3958                         force = B_TRUE;
3959                         break;
3960                 case '?':
3961                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3962                             optopt);
3963                         usage(B_FALSE);
3964                 }
3965         }
3966
3967         argc -= optind;
3968         argv += optind;
3969
3970         /* check number of arguments */
3971         if (argc < 1) {
3972                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3973                 usage(B_FALSE);
3974         }
3975         if (argc > 1) {
3976                 (void) fprintf(stderr, gettext("too many arguments\n"));
3977                 usage(B_FALSE);
3978         }
3979
3980         /* open the snapshot */
3981         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3982                 return (1);
3983
3984         /* open the parent dataset */
3985         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3986         verify((delim = strrchr(parentname, '@')) != NULL);
3987         *delim = '\0';
3988         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3989                 zfs_close(snap);
3990                 return (1);
3991         }
3992
3993         /*
3994          * Check for more recent snapshots and/or clones based on the presence
3995          * of '-r' and '-R'.
3996          */
3997         cb.cb_target = argv[0];
3998         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3999         cb.cb_first = B_TRUE;
4000         cb.cb_error = 0;
4001
4002         if (cb.cb_create > 0)
4003                 min_txg = cb.cb_create;
4004
4005         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb,
4006             min_txg, 0)) != 0)
4007                 goto out;
4008         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
4009                 goto out;
4010
4011         if ((ret = cb.cb_error) != 0)
4012                 goto out;
4013
4014         /*
4015          * Rollback parent to the given snapshot.
4016          */
4017         ret = zfs_rollback(zhp, snap, force);
4018
4019 out:
4020         zfs_close(snap);
4021         zfs_close(zhp);
4022
4023         if (ret == 0)
4024                 return (0);
4025         else
4026                 return (1);
4027 }
4028
4029 /*
4030  * zfs set property=value ... { fs | snap | vol } ...
4031  *
4032  * Sets the given properties for all datasets specified on the command line.
4033  */
4034
4035 static int
4036 set_callback(zfs_handle_t *zhp, void *data)
4037 {
4038         nvlist_t *props = data;
4039
4040         if (zfs_prop_set_list(zhp, props) != 0) {
4041                 switch (libzfs_errno(g_zfs)) {
4042                 case EZFS_MOUNTFAILED:
4043                         (void) fprintf(stderr, gettext("property may be set "
4044                             "but unable to remount filesystem\n"));
4045                         break;
4046                 case EZFS_SHARENFSFAILED:
4047                         (void) fprintf(stderr, gettext("property may be set "
4048                             "but unable to reshare filesystem\n"));
4049                         break;
4050                 }
4051                 return (1);
4052         }
4053         return (0);
4054 }
4055
4056 static int
4057 zfs_do_set(int argc, char **argv)
4058 {
4059         nvlist_t *props = NULL;
4060         int ds_start = -1; /* argv idx of first dataset arg */
4061         int ret = 0;
4062         int i;
4063
4064         /* check for options */
4065         if (argc > 1 && argv[1][0] == '-') {
4066                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4067                     argv[1][1]);
4068                 usage(B_FALSE);
4069         }
4070
4071         /* check number of arguments */
4072         if (argc < 2) {
4073                 (void) fprintf(stderr, gettext("missing arguments\n"));
4074                 usage(B_FALSE);
4075         }
4076         if (argc < 3) {
4077                 if (strchr(argv[1], '=') == NULL) {
4078                         (void) fprintf(stderr, gettext("missing property=value "
4079                             "argument(s)\n"));
4080                 } else {
4081                         (void) fprintf(stderr, gettext("missing dataset "
4082                             "name(s)\n"));
4083                 }
4084                 usage(B_FALSE);
4085         }
4086
4087         /* validate argument order:  prop=val args followed by dataset args */
4088         for (i = 1; i < argc; i++) {
4089                 if (strchr(argv[i], '=') != NULL) {
4090                         if (ds_start > 0) {
4091                                 /* out-of-order prop=val argument */
4092                                 (void) fprintf(stderr, gettext("invalid "
4093                                     "argument order\n"));
4094                                 usage(B_FALSE);
4095                         }
4096                 } else if (ds_start < 0) {
4097                         ds_start = i;
4098                 }
4099         }
4100         if (ds_start < 0) {
4101                 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
4102                 usage(B_FALSE);
4103         }
4104
4105         /* Populate a list of property settings */
4106         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4107                 nomem();
4108         for (i = 1; i < ds_start; i++) {
4109                 if (!parseprop(props, argv[i])) {
4110                         ret = -1;
4111                         goto error;
4112                 }
4113         }
4114
4115         ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
4116             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
4117
4118 error:
4119         nvlist_free(props);
4120         return (ret);
4121 }
4122
4123 typedef struct snap_cbdata {
4124         nvlist_t *sd_nvl;
4125         boolean_t sd_recursive;
4126         const char *sd_snapname;
4127 } snap_cbdata_t;
4128
4129 static int
4130 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
4131 {
4132         snap_cbdata_t *sd = arg;
4133         char *name;
4134         int rv = 0;
4135         int error;
4136
4137         if (sd->sd_recursive &&
4138             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
4139                 zfs_close(zhp);
4140                 return (0);
4141         }
4142
4143         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
4144         if (error == -1)
4145                 nomem();
4146         fnvlist_add_boolean(sd->sd_nvl, name);
4147         free(name);
4148
4149         if (sd->sd_recursive)
4150                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
4151         zfs_close(zhp);
4152         return (rv);
4153 }
4154
4155 /*
4156  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
4157  *
4158  * Creates a snapshot with the given name.  While functionally equivalent to
4159  * 'zfs create', it is a separate command to differentiate intent.
4160  */
4161 static int
4162 zfs_do_snapshot(int argc, char **argv)
4163 {
4164         int ret = 0;
4165         int c;
4166         nvlist_t *props;
4167         snap_cbdata_t sd = { 0 };
4168         boolean_t multiple_snaps = B_FALSE;
4169
4170         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4171                 nomem();
4172         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
4173                 nomem();
4174
4175         /* check options */
4176         while ((c = getopt(argc, argv, "ro:")) != -1) {
4177                 switch (c) {
4178                 case 'o':
4179                         if (!parseprop(props, optarg)) {
4180                                 nvlist_free(sd.sd_nvl);
4181                                 nvlist_free(props);
4182                                 return (1);
4183                         }
4184                         break;
4185                 case 'r':
4186                         sd.sd_recursive = B_TRUE;
4187                         multiple_snaps = B_TRUE;
4188                         break;
4189                 case '?':
4190                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4191                             optopt);
4192                         goto usage;
4193                 }
4194         }
4195
4196         argc -= optind;
4197         argv += optind;
4198
4199         /* check number of arguments */
4200         if (argc < 1) {
4201                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4202                 goto usage;
4203         }
4204
4205         if (argc > 1)
4206                 multiple_snaps = B_TRUE;
4207         for (; argc > 0; argc--, argv++) {
4208                 char *atp;
4209                 zfs_handle_t *zhp;
4210
4211                 atp = strchr(argv[0], '@');
4212                 if (atp == NULL)
4213                         goto usage;
4214                 *atp = '\0';
4215                 sd.sd_snapname = atp + 1;
4216                 zhp = zfs_open(g_zfs, argv[0],
4217                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4218                 if (zhp == NULL)
4219                         goto usage;
4220                 if (zfs_snapshot_cb(zhp, &sd) != 0)
4221                         goto usage;
4222         }
4223
4224         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
4225         nvlist_free(sd.sd_nvl);
4226         nvlist_free(props);
4227         if (ret != 0 && multiple_snaps)
4228                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
4229         return (ret != 0);
4230
4231 usage:
4232         nvlist_free(sd.sd_nvl);
4233         nvlist_free(props);
4234         usage(B_FALSE);
4235         return (-1);
4236 }
4237
4238
4239 /*
4240  * Send a backup stream to stdout.
4241  */
4242 static int
4243 zfs_do_send(int argc, char **argv)
4244 {
4245         char *fromname = NULL;
4246         char *toname = NULL;
4247         char *resume_token = NULL;
4248         char *cp;
4249         zfs_handle_t *zhp;
4250         sendflags_t flags = { 0 };
4251         int c, err;
4252         nvlist_t *dbgnv = NULL;
4253         char *redactbook = NULL;
4254
4255         struct option long_options[] = {
4256                 {"replicate",   no_argument,            NULL, 'R'},
4257                 {"redact",      required_argument,      NULL, 'd'},
4258                 {"props",       no_argument,            NULL, 'p'},
4259                 {"parsable",    no_argument,            NULL, 'P'},
4260                 {"dedup",       no_argument,            NULL, 'D'},
4261                 {"verbose",     no_argument,            NULL, 'v'},
4262                 {"dryrun",      no_argument,            NULL, 'n'},
4263                 {"large-block", no_argument,            NULL, 'L'},
4264                 {"embed",       no_argument,            NULL, 'e'},
4265                 {"resume",      required_argument,      NULL, 't'},
4266                 {"compressed",  no_argument,            NULL, 'c'},
4267                 {"raw",         no_argument,            NULL, 'w'},
4268                 {"backup",      no_argument,            NULL, 'b'},
4269                 {"holds",       no_argument,            NULL, 'h'},
4270                 {"saved",       no_argument,            NULL, 'S'},
4271                 {0, 0, 0, 0}
4272         };
4273
4274         /* check options */
4275         while ((c = getopt_long(argc, argv, ":i:I:RDpvnPLeht:cwbd:S",
4276             long_options, NULL)) != -1) {
4277                 switch (c) {
4278                 case 'i':
4279                         if (fromname)
4280                                 usage(B_FALSE);
4281                         fromname = optarg;
4282                         break;
4283                 case 'I':
4284                         if (fromname)
4285                                 usage(B_FALSE);
4286                         fromname = optarg;
4287                         flags.doall = B_TRUE;
4288                         break;
4289                 case 'R':
4290                         flags.replicate = B_TRUE;
4291                         break;
4292                 case 'd':
4293                         redactbook = optarg;
4294                         break;
4295                 case 'p':
4296                         flags.props = B_TRUE;
4297                         break;
4298                 case 'b':
4299                         flags.backup = B_TRUE;
4300                         break;
4301                 case 'h':
4302                         flags.holds = B_TRUE;
4303                         break;
4304                 case 'P':
4305                         flags.parsable = B_TRUE;
4306                         break;
4307                 case 'v':
4308                         flags.verbosity++;
4309                         flags.progress = B_TRUE;
4310                         break;
4311                 case 'D':
4312                         (void) fprintf(stderr,
4313                             gettext("WARNING: deduplicated send is no "
4314                             "longer supported.  A regular,\n"
4315                             "non-deduplicated stream will be generated.\n\n"));
4316                         break;
4317                 case 'n':
4318                         flags.dryrun = B_TRUE;
4319                         break;
4320                 case 'L':
4321                         flags.largeblock = B_TRUE;
4322                         break;
4323                 case 'e':
4324                         flags.embed_data = B_TRUE;
4325                         break;
4326                 case 't':
4327                         resume_token = optarg;
4328                         break;
4329                 case 'c':
4330                         flags.compress = B_TRUE;
4331                         break;
4332                 case 'w':
4333                         flags.raw = B_TRUE;
4334                         flags.compress = B_TRUE;
4335                         flags.embed_data = B_TRUE;
4336                         flags.largeblock = B_TRUE;
4337                         break;
4338                 case 'S':
4339                         flags.saved = B_TRUE;
4340                         break;
4341                 case ':':
4342                         /*
4343                          * If a parameter was not passed, optopt contains the
4344                          * value that would normally lead us into the
4345                          * appropriate case statement.  If it's > 256, then this
4346                          * must be a longopt and we should look at argv to get
4347                          * the string.  Otherwise it's just the character, so we
4348                          * should use it directly.
4349                          */
4350                         if (optopt <= UINT8_MAX) {
4351                                 (void) fprintf(stderr,
4352                                     gettext("missing argument for '%c' "
4353                                     "option\n"), optopt);
4354                         } else {
4355                                 (void) fprintf(stderr,
4356                                     gettext("missing argument for '%s' "
4357                                     "option\n"), argv[optind - 1]);
4358                         }
4359                         usage(B_FALSE);
4360                         break;
4361                 case '?':
4362                         /*FALLTHROUGH*/
4363                 default:
4364                         /*
4365                          * If an invalid flag was passed, optopt contains the
4366                          * character if it was a short flag, or 0 if it was a
4367                          * longopt.
4368                          */
4369                         if (optopt != 0) {
4370                                 (void) fprintf(stderr,
4371                                     gettext("invalid option '%c'\n"), optopt);
4372                         } else {
4373                                 (void) fprintf(stderr,
4374                                     gettext("invalid option '%s'\n"),
4375                                     argv[optind - 1]);
4376
4377                         }
4378                         usage(B_FALSE);
4379                 }
4380         }
4381
4382         if (flags.parsable && flags.verbosity == 0)
4383                 flags.verbosity = 1;
4384
4385         argc -= optind;
4386         argv += optind;
4387
4388         if (resume_token != NULL) {
4389                 if (fromname != NULL || flags.replicate || flags.props ||
4390                     flags.backup || flags.holds ||
4391                     flags.saved || redactbook != NULL) {
4392                         (void) fprintf(stderr,
4393                             gettext("invalid flags combined with -t\n"));
4394                         usage(B_FALSE);
4395                 }
4396                 if (argc > 0) {
4397                         (void) fprintf(stderr, gettext("too many arguments\n"));
4398                         usage(B_FALSE);
4399                 }
4400         } else {
4401                 if (argc < 1) {
4402                         (void) fprintf(stderr,
4403                             gettext("missing snapshot argument\n"));
4404                         usage(B_FALSE);
4405                 }
4406                 if (argc > 1) {
4407                         (void) fprintf(stderr, gettext("too many arguments\n"));
4408                         usage(B_FALSE);
4409                 }
4410         }
4411
4412         if (flags.saved) {
4413                 if (fromname != NULL || flags.replicate || flags.props ||
4414                     flags.doall || flags.backup ||
4415                     flags.holds || flags.largeblock || flags.embed_data ||
4416                     flags.compress || flags.raw || redactbook != NULL) {
4417                         (void) fprintf(stderr, gettext("incompatible flags "
4418                             "combined with saved send flag\n"));
4419                         usage(B_FALSE);
4420                 }
4421                 if (strchr(argv[0], '@') != NULL) {
4422                         (void) fprintf(stderr, gettext("saved send must "
4423                             "specify the dataset with partially-received "
4424                             "state\n"));
4425                         usage(B_FALSE);
4426                 }
4427         }
4428
4429         if (flags.raw && redactbook != NULL) {
4430                 (void) fprintf(stderr,
4431                     gettext("Error: raw sends may not be redacted.\n"));
4432                 return (1);
4433         }
4434
4435         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
4436                 (void) fprintf(stderr,
4437                     gettext("Error: Stream can not be written to a terminal.\n"
4438                     "You must redirect standard output.\n"));
4439                 return (1);
4440         }
4441
4442         if (flags.saved) {
4443                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
4444                 if (zhp == NULL)
4445                         return (1);
4446
4447                 err = zfs_send_saved(zhp, &flags, STDOUT_FILENO,
4448                     resume_token);
4449                 zfs_close(zhp);
4450                 return (err != 0);
4451         } else if (resume_token != NULL) {
4452                 return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
4453                     resume_token));
4454         }
4455
4456         /*
4457          * For everything except -R and -I, use the new, cleaner code path.
4458          */
4459         if (!(flags.replicate || flags.doall)) {
4460                 char frombuf[ZFS_MAX_DATASET_NAME_LEN];
4461
4462                 if (fromname != NULL && (strchr(fromname, '#') == NULL &&
4463                     strchr(fromname, '@') == NULL)) {
4464                         /*
4465                          * Neither bookmark or snapshot was specified.  Print a
4466                          * warning, and assume snapshot.
4467                          */
4468                         (void) fprintf(stderr, "Warning: incremental source "
4469                             "didn't specify type, assuming snapshot. Use '@' "
4470                             "or '#' prefix to avoid ambiguity.\n");
4471                         (void) snprintf(frombuf, sizeof (frombuf), "@%s",
4472                             fromname);
4473                         fromname = frombuf;
4474                 }
4475                 if (fromname != NULL &&
4476                     (fromname[0] == '#' || fromname[0] == '@')) {
4477                         /*
4478                          * Incremental source name begins with # or @.
4479                          * Default to same fs as target.
4480                          */
4481                         char tmpbuf[ZFS_MAX_DATASET_NAME_LEN];
4482                         (void) strlcpy(tmpbuf, fromname, sizeof (tmpbuf));
4483                         (void) strlcpy(frombuf, argv[0], sizeof (frombuf));
4484                         cp = strchr(frombuf, '@');
4485                         if (cp != NULL)
4486                                 *cp = '\0';
4487                         (void) strlcat(frombuf, tmpbuf, sizeof (frombuf));
4488                         fromname = frombuf;
4489                 }
4490
4491                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
4492                 if (zhp == NULL)
4493                         return (1);
4494                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, &flags,
4495                     redactbook);
4496                 zfs_close(zhp);
4497                 return (err != 0);
4498         }
4499
4500         if (fromname != NULL && strchr(fromname, '#')) {
4501                 (void) fprintf(stderr,
4502                     gettext("Error: multiple snapshots cannot be "
4503                     "sent from a bookmark.\n"));
4504                 return (1);
4505         }
4506
4507         if (redactbook != NULL) {
4508                 (void) fprintf(stderr, gettext("Error: multiple snapshots "
4509                     "cannot be sent redacted.\n"));
4510                 return (1);
4511         }
4512
4513         if ((cp = strchr(argv[0], '@')) == NULL) {
4514                 (void) fprintf(stderr, gettext("Error: "
4515                     "Unsupported flag with filesystem or bookmark.\n"));
4516                 return (1);
4517         }
4518         *cp = '\0';
4519         toname = cp + 1;
4520         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4521         if (zhp == NULL)
4522                 return (1);
4523
4524         /*
4525          * If they specified the full path to the snapshot, chop off
4526          * everything except the short name of the snapshot, but special
4527          * case if they specify the origin.
4528          */
4529         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
4530                 char origin[ZFS_MAX_DATASET_NAME_LEN];
4531                 zprop_source_t src;
4532
4533                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
4534                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
4535
4536                 if (strcmp(origin, fromname) == 0) {
4537                         fromname = NULL;
4538                         flags.fromorigin = B_TRUE;
4539                 } else {
4540                         *cp = '\0';
4541                         if (cp != fromname && strcmp(argv[0], fromname)) {
4542                                 (void) fprintf(stderr,
4543                                     gettext("incremental source must be "
4544                                     "in same filesystem\n"));
4545                                 usage(B_FALSE);
4546                         }
4547                         fromname = cp + 1;
4548                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
4549                                 (void) fprintf(stderr,
4550                                     gettext("invalid incremental source\n"));
4551                                 usage(B_FALSE);
4552                         }
4553                 }
4554         }
4555
4556         if (flags.replicate && fromname == NULL)
4557                 flags.doall = B_TRUE;
4558
4559         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
4560             flags.verbosity >= 3 ? &dbgnv : NULL);
4561
4562         if (flags.verbosity >= 3 && dbgnv != NULL) {
4563                 /*
4564                  * dump_nvlist prints to stdout, but that's been
4565                  * redirected to a file.  Make it print to stderr
4566                  * instead.
4567                  */
4568                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
4569                 dump_nvlist(dbgnv, 0);
4570                 nvlist_free(dbgnv);
4571         }
4572         zfs_close(zhp);
4573
4574         return (err != 0);
4575 }
4576
4577 /*
4578  * Restore a backup stream from stdin.
4579  */
4580 static int
4581 zfs_do_receive(int argc, char **argv)
4582 {
4583         int c, err = 0;
4584         recvflags_t flags = { 0 };
4585         boolean_t abort_resumable = B_FALSE;
4586         nvlist_t *props;
4587
4588         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4589                 nomem();
4590
4591         /* check options */
4592         while ((c = getopt(argc, argv, ":o:x:dehMnuvFsA")) != -1) {
4593                 switch (c) {
4594                 case 'o':
4595                         if (!parseprop(props, optarg)) {
4596                                 nvlist_free(props);
4597                                 usage(B_FALSE);
4598                         }
4599                         break;
4600                 case 'x':
4601                         if (!parsepropname(props, optarg)) {
4602                                 nvlist_free(props);
4603                                 usage(B_FALSE);
4604                         }
4605                         break;
4606                 case 'd':
4607                         if (flags.istail) {
4608                                 (void) fprintf(stderr, gettext("invalid option "
4609                                     "combination: -d and -e are mutually "
4610                                     "exclusive\n"));
4611                                 usage(B_FALSE);
4612                         }
4613                         flags.isprefix = B_TRUE;
4614                         break;
4615                 case 'e':
4616                         if (flags.isprefix) {
4617                                 (void) fprintf(stderr, gettext("invalid option "
4618                                     "combination: -d and -e are mutually "
4619                                     "exclusive\n"));
4620                                 usage(B_FALSE);
4621                         }
4622                         flags.istail = B_TRUE;
4623                         break;
4624                 case 'h':
4625                         flags.skipholds = B_TRUE;
4626                         break;
4627                 case 'M':
4628                         flags.forceunmount = B_TRUE;
4629                         break;
4630                 case 'n':
4631                         flags.dryrun = B_TRUE;
4632                         break;
4633                 case 'u':
4634                         flags.nomount = B_TRUE;
4635                         break;
4636                 case 'v':
4637                         flags.verbose = B_TRUE;
4638                         break;
4639                 case 's':
4640                         flags.resumable = B_TRUE;
4641                         break;
4642                 case 'F':
4643                         flags.force = B_TRUE;
4644                         break;
4645                 case 'A':
4646                         abort_resumable = B_TRUE;
4647                         break;
4648                 case ':':
4649                         (void) fprintf(stderr, gettext("missing argument for "
4650                             "'%c' option\n"), optopt);
4651                         usage(B_FALSE);
4652                         break;
4653                 case '?':
4654                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4655                             optopt);
4656                         usage(B_FALSE);
4657                 }
4658         }
4659
4660         argc -= optind;
4661         argv += optind;
4662
4663         /* zfs recv -e (use "tail" name) implies -d (remove dataset "head") */
4664         if (flags.istail)
4665                 flags.isprefix = B_TRUE;
4666
4667         /* check number of arguments */
4668         if (argc < 1) {
4669                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4670                 usage(B_FALSE);
4671         }
4672         if (argc > 1) {
4673                 (void) fprintf(stderr, gettext("too many arguments\n"));
4674                 usage(B_FALSE);
4675         }
4676
4677         if (abort_resumable) {
4678                 if (flags.isprefix || flags.istail || flags.dryrun ||
4679                     flags.resumable || flags.nomount) {
4680                         (void) fprintf(stderr, gettext("invalid option\n"));
4681                         usage(B_FALSE);
4682                 }
4683
4684                 char namebuf[ZFS_MAX_DATASET_NAME_LEN];
4685                 (void) snprintf(namebuf, sizeof (namebuf),
4686                     "%s/%%recv", argv[0]);
4687
4688                 if (zfs_dataset_exists(g_zfs, namebuf,
4689                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
4690                         zfs_handle_t *zhp = zfs_open(g_zfs,
4691                             namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4692                         if (zhp == NULL) {
4693                                 nvlist_free(props);
4694                                 return (1);
4695                         }
4696                         err = zfs_destroy(zhp, B_FALSE);
4697                         zfs_close(zhp);
4698                 } else {
4699                         zfs_handle_t *zhp = zfs_open(g_zfs,
4700                             argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4701                         if (zhp == NULL)
4702                                 usage(B_FALSE);
4703                         if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
4704                             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
4705                             NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
4706                                 (void) fprintf(stderr,
4707                                     gettext("'%s' does not have any "
4708                                     "resumable receive state to abort\n"),
4709                                     argv[0]);
4710                                 nvlist_free(props);
4711                                 zfs_close(zhp);
4712                                 return (1);
4713                         }
4714                         err = zfs_destroy(zhp, B_FALSE);
4715                         zfs_close(zhp);
4716                 }
4717                 nvlist_free(props);
4718                 return (err != 0);
4719         }
4720
4721         if (isatty(STDIN_FILENO)) {
4722                 (void) fprintf(stderr,
4723                     gettext("Error: Backup stream can not be read "
4724                     "from a terminal.\n"
4725                     "You must redirect standard input.\n"));
4726                 nvlist_free(props);
4727                 return (1);
4728         }
4729         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4730         nvlist_free(props);
4731
4732         return (err != 0);
4733 }
4734
4735 /*
4736  * allow/unallow stuff
4737  */
4738 /* copied from zfs/sys/dsl_deleg.h */
4739 #define ZFS_DELEG_PERM_CREATE           "create"
4740 #define ZFS_DELEG_PERM_DESTROY          "destroy"
4741 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
4742 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
4743 #define ZFS_DELEG_PERM_CLONE            "clone"
4744 #define ZFS_DELEG_PERM_PROMOTE          "promote"
4745 #define ZFS_DELEG_PERM_RENAME           "rename"
4746 #define ZFS_DELEG_PERM_MOUNT            "mount"
4747 #define ZFS_DELEG_PERM_SHARE            "share"
4748 #define ZFS_DELEG_PERM_SEND             "send"
4749 #define ZFS_DELEG_PERM_RECEIVE          "receive"
4750 #define ZFS_DELEG_PERM_ALLOW            "allow"
4751 #define ZFS_DELEG_PERM_USERPROP         "userprop"
4752 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
4753 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
4754 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
4755 #define ZFS_DELEG_PERM_USERUSED         "userused"
4756 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
4757 #define ZFS_DELEG_PERM_USEROBJQUOTA     "userobjquota"
4758 #define ZFS_DELEG_PERM_GROUPOBJQUOTA    "groupobjquota"
4759 #define ZFS_DELEG_PERM_USEROBJUSED      "userobjused"
4760 #define ZFS_DELEG_PERM_GROUPOBJUSED     "groupobjused"
4761
4762 #define ZFS_DELEG_PERM_HOLD             "hold"
4763 #define ZFS_DELEG_PERM_RELEASE          "release"
4764 #define ZFS_DELEG_PERM_DIFF             "diff"
4765 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4766 #define ZFS_DELEG_PERM_LOAD_KEY         "load-key"
4767 #define ZFS_DELEG_PERM_CHANGE_KEY       "change-key"
4768
4769 #define ZFS_DELEG_PERM_PROJECTUSED      "projectused"
4770 #define ZFS_DELEG_PERM_PROJECTQUOTA     "projectquota"
4771 #define ZFS_DELEG_PERM_PROJECTOBJUSED   "projectobjused"
4772 #define ZFS_DELEG_PERM_PROJECTOBJQUOTA  "projectobjquota"
4773
4774 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4775
4776 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4777         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4778         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4779         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4780         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4781         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4782         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4783         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4784         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4785         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4786         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4787         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4788         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4789         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4790         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4791         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4792         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4793         { ZFS_DELEG_PERM_LOAD_KEY, ZFS_DELEG_NOTE_LOAD_KEY },
4794         { ZFS_DELEG_PERM_CHANGE_KEY, ZFS_DELEG_NOTE_CHANGE_KEY },
4795
4796         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4797         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4798         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4799         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4800         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4801         { ZFS_DELEG_PERM_USEROBJQUOTA, ZFS_DELEG_NOTE_USEROBJQUOTA },
4802         { ZFS_DELEG_PERM_USEROBJUSED, ZFS_DELEG_NOTE_USEROBJUSED },
4803         { ZFS_DELEG_PERM_GROUPOBJQUOTA, ZFS_DELEG_NOTE_GROUPOBJQUOTA },
4804         { ZFS_DELEG_PERM_GROUPOBJUSED, ZFS_DELEG_NOTE_GROUPOBJUSED },
4805         { ZFS_DELEG_PERM_PROJECTUSED, ZFS_DELEG_NOTE_PROJECTUSED },
4806         { ZFS_DELEG_PERM_PROJECTQUOTA, ZFS_DELEG_NOTE_PROJECTQUOTA },
4807         { ZFS_DELEG_PERM_PROJECTOBJUSED, ZFS_DELEG_NOTE_PROJECTOBJUSED },
4808         { ZFS_DELEG_PERM_PROJECTOBJQUOTA, ZFS_DELEG_NOTE_PROJECTOBJQUOTA },
4809         { NULL, ZFS_DELEG_NOTE_NONE }
4810 };
4811
4812 /* permission structure */
4813 typedef struct deleg_perm {
4814         zfs_deleg_who_type_t    dp_who_type;
4815         const char              *dp_name;
4816         boolean_t               dp_local;
4817         boolean_t               dp_descend;
4818 } deleg_perm_t;
4819
4820 /* */
4821 typedef struct deleg_perm_node {
4822         deleg_perm_t            dpn_perm;
4823
4824         uu_avl_node_t           dpn_avl_node;
4825 } deleg_perm_node_t;
4826
4827 typedef struct fs_perm fs_perm_t;
4828
4829 /* permissions set */
4830 typedef struct who_perm {
4831         zfs_deleg_who_type_t    who_type;
4832         const char              *who_name;              /* id */
4833         char                    who_ug_name[256];       /* user/group name */
4834         fs_perm_t               *who_fsperm;            /* uplink */
4835
4836         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4837 } who_perm_t;
4838
4839 /* */
4840 typedef struct who_perm_node {
4841         who_perm_t      who_perm;
4842         uu_avl_node_t   who_avl_node;
4843 } who_perm_node_t;
4844
4845 typedef struct fs_perm_set fs_perm_set_t;
4846 /* fs permissions */
4847 struct fs_perm {
4848         const char              *fsp_name;
4849
4850         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4851         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4852
4853         fs_perm_set_t           *fsp_set;       /* uplink */
4854 };
4855
4856 /* */
4857 typedef struct fs_perm_node {
4858         fs_perm_t       fspn_fsperm;
4859         uu_avl_t        *fspn_avl;
4860
4861         uu_list_node_t  fspn_list_node;
4862 } fs_perm_node_t;
4863
4864 /* top level structure */
4865 struct fs_perm_set {
4866         uu_list_pool_t  *fsps_list_pool;
4867         uu_list_t       *fsps_list; /* list of fs_perms */
4868
4869         uu_avl_pool_t   *fsps_named_set_avl_pool;
4870         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4871         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4872 };
4873
4874 static inline const char *
4875 deleg_perm_type(zfs_deleg_note_t note)
4876 {
4877         /* subcommands */
4878         switch (note) {
4879                 /* SUBCOMMANDS */
4880                 /* OTHER */
4881         case ZFS_DELEG_NOTE_GROUPQUOTA:
4882         case ZFS_DELEG_NOTE_GROUPUSED:
4883         case ZFS_DELEG_NOTE_USERPROP:
4884         case ZFS_DELEG_NOTE_USERQUOTA:
4885         case ZFS_DELEG_NOTE_USERUSED:
4886         case ZFS_DELEG_NOTE_USEROBJQUOTA:
4887         case ZFS_DELEG_NOTE_USEROBJUSED:
4888         case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
4889         case ZFS_DELEG_NOTE_GROUPOBJUSED:
4890         case ZFS_DELEG_NOTE_PROJECTUSED:
4891         case ZFS_DELEG_NOTE_PROJECTQUOTA:
4892         case ZFS_DELEG_NOTE_PROJECTOBJUSED:
4893         case ZFS_DELEG_NOTE_PROJECTOBJQUOTA:
4894                 /* other */
4895                 return (gettext("other"));
4896         default:
4897                 return (gettext("subcommand"));
4898         }
4899 }
4900
4901 static int
4902 who_type2weight(zfs_deleg_who_type_t who_type)
4903 {
4904         int res;
4905         switch (who_type) {
4906                 case ZFS_DELEG_NAMED_SET_SETS:
4907                 case ZFS_DELEG_NAMED_SET:
4908                         res = 0;
4909                         break;
4910                 case ZFS_DELEG_CREATE_SETS:
4911                 case ZFS_DELEG_CREATE:
4912                         res = 1;
4913                         break;
4914                 case ZFS_DELEG_USER_SETS:
4915                 case ZFS_DELEG_USER:
4916                         res = 2;
4917                         break;
4918                 case ZFS_DELEG_GROUP_SETS:
4919                 case ZFS_DELEG_GROUP:
4920                         res = 3;
4921                         break;
4922                 case ZFS_DELEG_EVERYONE_SETS:
4923                 case ZFS_DELEG_EVERYONE:
4924                         res = 4;
4925                         break;
4926                 default:
4927                         res = -1;
4928         }
4929
4930         return (res);
4931 }
4932
4933 /* ARGSUSED */
4934 static int
4935 who_perm_compare(const void *larg, const void *rarg, void *unused)
4936 {
4937         const who_perm_node_t *l = larg;
4938         const who_perm_node_t *r = rarg;
4939         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4940         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4941         int lweight = who_type2weight(ltype);
4942         int rweight = who_type2weight(rtype);
4943         int res = lweight - rweight;
4944         if (res == 0)
4945                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4946                     ZFS_MAX_DELEG_NAME-1);
4947
4948         if (res == 0)
4949                 return (0);
4950         if (res > 0)
4951                 return (1);
4952         else
4953                 return (-1);
4954 }
4955
4956 /* ARGSUSED */
4957 static int
4958 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4959 {
4960         const deleg_perm_node_t *l = larg;
4961         const deleg_perm_node_t *r = rarg;
4962         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4963             ZFS_MAX_DELEG_NAME-1);
4964
4965         if (res == 0)
4966                 return (0);
4967
4968         if (res > 0)
4969                 return (1);
4970         else
4971                 return (-1);
4972 }
4973
4974 static inline void
4975 fs_perm_set_init(fs_perm_set_t *fspset)
4976 {
4977         bzero(fspset, sizeof (fs_perm_set_t));
4978
4979         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4980             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4981             NULL, UU_DEFAULT)) == NULL)
4982                 nomem();
4983         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4984             UU_DEFAULT)) == NULL)
4985                 nomem();
4986
4987         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4988             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4989             who_perm_node_t, who_avl_node), who_perm_compare,
4990             UU_DEFAULT)) == NULL)
4991                 nomem();
4992
4993         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4994             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4995             who_perm_node_t, who_avl_node), who_perm_compare,
4996             UU_DEFAULT)) == NULL)
4997                 nomem();
4998
4999         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
5000             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
5001             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
5002             == NULL)
5003                 nomem();
5004 }
5005
5006 static inline void fs_perm_fini(fs_perm_t *);
5007 static inline void who_perm_fini(who_perm_t *);
5008
5009 static inline void
5010 fs_perm_set_fini(fs_perm_set_t *fspset)
5011 {
5012         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
5013
5014         while (node != NULL) {
5015                 fs_perm_node_t *next_node =
5016                     uu_list_next(fspset->fsps_list, node);
5017                 fs_perm_t *fsperm = &node->fspn_fsperm;
5018                 fs_perm_fini(fsperm);
5019                 uu_list_remove(fspset->fsps_list, node);
5020                 free(node);
5021                 node = next_node;
5022         }
5023
5024         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
5025         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
5026         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
5027 }
5028
5029 static inline void
5030 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
5031     const char *name)
5032 {
5033         deleg_perm->dp_who_type = type;
5034         deleg_perm->dp_name = name;
5035 }
5036
5037 static inline void
5038 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
5039     zfs_deleg_who_type_t type, const char *name)
5040 {
5041         uu_avl_pool_t   *pool;
5042         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
5043
5044         bzero(who_perm, sizeof (who_perm_t));
5045
5046         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
5047             UU_DEFAULT)) == NULL)
5048                 nomem();
5049
5050         who_perm->who_type = type;
5051         who_perm->who_name = name;
5052         who_perm->who_fsperm = fsperm;
5053 }
5054
5055 static inline void
5056 who_perm_fini(who_perm_t *who_perm)
5057 {
5058         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
5059
5060         while (node != NULL) {
5061                 deleg_perm_node_t *next_node =
5062                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
5063
5064                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
5065                 free(node);
5066                 node = next_node;
5067         }
5068
5069         uu_avl_destroy(who_perm->who_deleg_perm_avl);
5070 }
5071
5072 static inline void
5073 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
5074 {
5075         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
5076         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
5077
5078         bzero(fsperm, sizeof (fs_perm_t));
5079
5080         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
5081             == NULL)
5082                 nomem();
5083
5084         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
5085             == NULL)
5086                 nomem();
5087
5088         fsperm->fsp_set = fspset;
5089         fsperm->fsp_name = fsname;
5090 }
5091
5092 static inline void
5093 fs_perm_fini(fs_perm_t *fsperm)
5094 {
5095         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
5096         while (node != NULL) {
5097                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
5098                     node);
5099                 who_perm_t *who_perm = &node->who_perm;
5100                 who_perm_fini(who_perm);
5101                 uu_avl_remove(fsperm->fsp_sc_avl, node);
5102                 free(node);
5103                 node = next_node;
5104         }
5105
5106         node = uu_avl_first(fsperm->fsp_uge_avl);
5107         while (node != NULL) {
5108                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
5109                     node);
5110                 who_perm_t *who_perm = &node->who_perm;
5111                 who_perm_fini(who_perm);
5112                 uu_avl_remove(fsperm->fsp_uge_avl, node);
5113                 free(node);
5114                 node = next_node;
5115         }
5116
5117         uu_avl_destroy(fsperm->fsp_sc_avl);
5118         uu_avl_destroy(fsperm->fsp_uge_avl);
5119 }
5120
5121 static void
5122 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
5123     zfs_deleg_who_type_t who_type, const char *name, char locality)
5124 {
5125         uu_avl_index_t idx = 0;
5126
5127         deleg_perm_node_t *found_node = NULL;
5128         deleg_perm_t    *deleg_perm = &node->dpn_perm;
5129
5130         deleg_perm_init(deleg_perm, who_type, name);
5131
5132         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
5133             == NULL)
5134                 uu_avl_insert(avl, node, idx);
5135         else {
5136                 node = found_node;
5137                 deleg_perm = &node->dpn_perm;
5138         }
5139
5140
5141         switch (locality) {
5142         case ZFS_DELEG_LOCAL:
5143                 deleg_perm->dp_local = B_TRUE;
5144                 break;
5145         case ZFS_DELEG_DESCENDENT:
5146                 deleg_perm->dp_descend = B_TRUE;
5147                 break;
5148         case ZFS_DELEG_NA:
5149                 break;
5150         default:
5151                 assert(B_FALSE); /* invalid locality */
5152         }
5153 }
5154
5155 static inline int
5156 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
5157 {
5158         nvpair_t *nvp = NULL;
5159         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
5160         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
5161         zfs_deleg_who_type_t who_type = who_perm->who_type;
5162
5163         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5164                 const char *name = nvpair_name(nvp);
5165                 data_type_t type = nvpair_type(nvp);
5166                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
5167                 deleg_perm_node_t *node =
5168                     safe_malloc(sizeof (deleg_perm_node_t));
5169
5170                 VERIFY(type == DATA_TYPE_BOOLEAN);
5171
5172                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
5173                 set_deleg_perm_node(avl, node, who_type, name, locality);
5174         }
5175
5176         return (0);
5177 }
5178
5179 static inline int
5180 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
5181 {
5182         nvpair_t *nvp = NULL;
5183         fs_perm_set_t *fspset = fsperm->fsp_set;
5184
5185         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5186                 nvlist_t *nvl2 = NULL;
5187                 const char *name = nvpair_name(nvp);
5188                 uu_avl_t *avl = NULL;
5189                 uu_avl_pool_t *avl_pool = NULL;
5190                 zfs_deleg_who_type_t perm_type = name[0];
5191                 char perm_locality = name[1];
5192                 const char *perm_name = name + 3;
5193                 who_perm_t *who_perm = NULL;
5194
5195                 assert('$' == name[2]);
5196
5197                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
5198                         return (-1);
5199
5200                 switch (perm_type) {
5201                 case ZFS_DELEG_CREATE:
5202                 case ZFS_DELEG_CREATE_SETS:
5203                 case ZFS_DELEG_NAMED_SET:
5204                 case ZFS_DELEG_NAMED_SET_SETS:
5205                         avl_pool = fspset->fsps_named_set_avl_pool;
5206                         avl = fsperm->fsp_sc_avl;
5207                         break;
5208                 case ZFS_DELEG_USER:
5209                 case ZFS_DELEG_USER_SETS:
5210                 case ZFS_DELEG_GROUP:
5211                 case ZFS_DELEG_GROUP_SETS:
5212                 case ZFS_DELEG_EVERYONE:
5213                 case ZFS_DELEG_EVERYONE_SETS:
5214                         avl_pool = fspset->fsps_who_perm_avl_pool;
5215                         avl = fsperm->fsp_uge_avl;
5216                         break;
5217
5218                 default:
5219                         assert(!"unhandled zfs_deleg_who_type_t");
5220                 }
5221
5222                 who_perm_node_t *found_node = NULL;
5223                 who_perm_node_t *node = safe_malloc(
5224                     sizeof (who_perm_node_t));
5225                 who_perm = &node->who_perm;
5226                 uu_avl_index_t idx = 0;
5227
5228                 uu_avl_node_init(node, &node->who_avl_node, avl_pool);
5229                 who_perm_init(who_perm, fsperm, perm_type, perm_name);
5230
5231                 if ((found_node = uu_avl_find(avl, node, NULL, &idx))
5232                     == NULL) {
5233                         if (avl == fsperm->fsp_uge_avl) {
5234                                 uid_t rid = 0;
5235                                 struct passwd *p = NULL;
5236                                 struct group *g = NULL;
5237                                 const char *nice_name = NULL;
5238
5239                                 switch (perm_type) {
5240                                 case ZFS_DELEG_USER_SETS:
5241                                 case ZFS_DELEG_USER:
5242                                         rid = atoi(perm_name);
5243                                         p = getpwuid(rid);
5244                                         if (p)
5245                                                 nice_name = p->pw_name;
5246                                         break;
5247                                 case ZFS_DELEG_GROUP_SETS:
5248                                 case ZFS_DELEG_GROUP:
5249                                         rid = atoi(perm_name);
5250                                         g = getgrgid(rid);
5251                                         if (g)
5252                                                 nice_name = g->gr_name;
5253                                         break;
5254
5255                                 default:
5256                                         break;
5257                                 }
5258
5259                                 if (nice_name != NULL) {
5260                                         (void) strlcpy(
5261                                             node->who_perm.who_ug_name,
5262                                             nice_name, 256);
5263                                 } else {
5264                                         /* User or group unknown */
5265                                         (void) snprintf(
5266                                             node->who_perm.who_ug_name,
5267                                             sizeof (node->who_perm.who_ug_name),
5268                                             "(unknown: %d)", rid);
5269                                 }
5270                         }
5271
5272                         uu_avl_insert(avl, node, idx);
5273                 } else {
5274                         node = found_node;
5275                         who_perm = &node->who_perm;
5276                 }
5277
5278                 assert(who_perm != NULL);
5279                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
5280         }
5281
5282         return (0);
5283 }
5284
5285 static inline int
5286 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
5287 {
5288         nvpair_t *nvp = NULL;
5289         uu_avl_index_t idx = 0;
5290
5291         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5292                 nvlist_t *nvl2 = NULL;
5293                 const char *fsname = nvpair_name(nvp);
5294                 data_type_t type = nvpair_type(nvp);
5295                 fs_perm_t *fsperm = NULL;
5296                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
5297                 if (node == NULL)
5298                         nomem();
5299
5300                 fsperm = &node->fspn_fsperm;
5301
5302                 VERIFY(DATA_TYPE_NVLIST == type);
5303
5304                 uu_list_node_init(node, &node->fspn_list_node,
5305                     fspset->fsps_list_pool);
5306
5307                 idx = uu_list_numnodes(fspset->fsps_list);
5308                 fs_perm_init(fsperm, fspset, fsname);
5309
5310                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
5311                         return (-1);
5312
5313                 (void) parse_fs_perm(fsperm, nvl2);
5314
5315                 uu_list_insert(fspset->fsps_list, node, idx);
5316         }
5317
5318         return (0);
5319 }
5320
5321 static inline const char *
5322 deleg_perm_comment(zfs_deleg_note_t note)
5323 {
5324         const char *str = "";
5325
5326         /* subcommands */
5327         switch (note) {
5328                 /* SUBCOMMANDS */
5329         case ZFS_DELEG_NOTE_ALLOW:
5330                 str = gettext("Must also have the permission that is being"
5331                     "\n\t\t\t\tallowed");
5332                 break;
5333         case ZFS_DELEG_NOTE_CLONE:
5334                 str = gettext("Must also have the 'create' ability and 'mount'"
5335                     "\n\t\t\t\tability in the origin file system");
5336                 break;
5337         case ZFS_DELEG_NOTE_CREATE:
5338                 str = gettext("Must also have the 'mount' ability");
5339                 break;
5340         case ZFS_DELEG_NOTE_DESTROY:
5341                 str = gettext("Must also have the 'mount' ability");
5342                 break;
5343         case ZFS_DELEG_NOTE_DIFF:
5344                 str = gettext("Allows lookup of paths within a dataset;"
5345                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
5346                     "\n\t\t\t\tin order to use zfs diff");
5347                 break;
5348         case ZFS_DELEG_NOTE_HOLD:
5349                 str = gettext("Allows adding a user hold to a snapshot");
5350                 break;
5351         case ZFS_DELEG_NOTE_MOUNT:
5352                 str = gettext("Allows mount/umount of ZFS datasets");
5353                 break;
5354         case ZFS_DELEG_NOTE_PROMOTE:
5355                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
5356                     " 'promote' ability in the origin file system");
5357                 break;
5358         case ZFS_DELEG_NOTE_RECEIVE:
5359                 str = gettext("Must also have the 'mount' and 'create'"
5360                     " ability");
5361                 break;
5362         case ZFS_DELEG_NOTE_RELEASE:
5363                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
5364                     "might destroy the snapshot");
5365                 break;
5366         case ZFS_DELEG_NOTE_RENAME:
5367                 str = gettext("Must also have the 'mount' and 'create'"
5368                     "\n\t\t\t\tability in the new parent");
5369                 break;
5370         case ZFS_DELEG_NOTE_ROLLBACK:
5371                 str = gettext("");
5372                 break;
5373         case ZFS_DELEG_NOTE_SEND:
5374                 str = gettext("");
5375                 break;
5376         case ZFS_DELEG_NOTE_SHARE:
5377                 str = gettext("Allows sharing file systems over NFS or SMB"
5378                     "\n\t\t\t\tprotocols");
5379                 break;
5380         case ZFS_DELEG_NOTE_SNAPSHOT:
5381                 str = gettext("");
5382                 break;
5383         case ZFS_DELEG_NOTE_LOAD_KEY:
5384                 str = gettext("Allows loading or unloading an encryption key");
5385                 break;
5386         case ZFS_DELEG_NOTE_CHANGE_KEY:
5387                 str = gettext("Allows changing or adding an encryption key");
5388                 break;
5389 /*
5390  *      case ZFS_DELEG_NOTE_VSCAN:
5391  *              str = gettext("");
5392  *              break;
5393  */
5394                 /* OTHER */
5395         case ZFS_DELEG_NOTE_GROUPQUOTA:
5396                 str = gettext("Allows accessing any groupquota@... property");
5397                 break;
5398         case ZFS_DELEG_NOTE_GROUPUSED:
5399                 str = gettext("Allows reading any groupused@... property");
5400                 break;
5401         case ZFS_DELEG_NOTE_USERPROP:
5402                 str = gettext("Allows changing any user property");
5403                 break;
5404         case ZFS_DELEG_NOTE_USERQUOTA:
5405                 str = gettext("Allows accessing any userquota@... property");
5406                 break;
5407         case ZFS_DELEG_NOTE_USERUSED:
5408                 str = gettext("Allows reading any userused@... property");
5409                 break;
5410         case ZFS_DELEG_NOTE_USEROBJQUOTA:
5411                 str = gettext("Allows accessing any userobjquota@... property");
5412                 break;
5413         case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
5414                 str = gettext("Allows accessing any \n\t\t\t\t"
5415                     "groupobjquota@... property");
5416                 break;
5417         case ZFS_DELEG_NOTE_GROUPOBJUSED:
5418                 str = gettext("Allows reading any groupobjused@... property");
5419                 break;
5420         case ZFS_DELEG_NOTE_USEROBJUSED:
5421                 str = gettext("Allows reading any userobjused@... property");
5422                 break;
5423         case ZFS_DELEG_NOTE_PROJECTQUOTA:
5424                 str = gettext("Allows accessing any projectquota@... property");
5425                 break;
5426         case ZFS_DELEG_NOTE_PROJECTOBJQUOTA:
5427                 str = gettext("Allows accessing any \n\t\t\t\t"
5428                     "projectobjquota@... property");
5429                 break;
5430         case ZFS_DELEG_NOTE_PROJECTUSED:
5431                 str = gettext("Allows reading any projectused@... property");
5432                 break;
5433         case ZFS_DELEG_NOTE_PROJECTOBJUSED:
5434                 str = gettext("Allows accessing any \n\t\t\t\t"
5435                     "projectobjused@... property");
5436                 break;
5437                 /* other */
5438         default:
5439                 str = "";
5440         }
5441
5442         return (str);
5443 }
5444
5445 struct allow_opts {
5446         boolean_t local;
5447         boolean_t descend;
5448         boolean_t user;
5449         boolean_t group;
5450         boolean_t everyone;
5451         boolean_t create;
5452         boolean_t set;
5453         boolean_t recursive; /* unallow only */
5454         boolean_t prt_usage;
5455
5456         boolean_t prt_perms;
5457         char *who;
5458         char *perms;
5459         const char *dataset;
5460 };
5461
5462 static inline int
5463 prop_cmp(const void *a, const void *b)
5464 {
5465         const char *str1 = *(const char **)a;
5466         const char *str2 = *(const char **)b;
5467         return (strcmp(str1, str2));
5468 }
5469
5470 static void
5471 allow_usage(boolean_t un, boolean_t requested, const char *msg)
5472 {
5473         const char *opt_desc[] = {
5474                 "-h", gettext("show this help message and exit"),
5475                 "-l", gettext("set permission locally"),
5476                 "-d", gettext("set permission for descents"),
5477                 "-u", gettext("set permission for user"),
5478                 "-g", gettext("set permission for group"),
5479                 "-e", gettext("set permission for everyone"),
5480                 "-c", gettext("set create time permission"),
5481                 "-s", gettext("define permission set"),
5482                 /* unallow only */
5483                 "-r", gettext("remove permissions recursively"),
5484         };
5485         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
5486         size_t allow_size = unallow_size - 2;
5487         const char *props[ZFS_NUM_PROPS];
5488         int i;
5489         size_t count = 0;
5490         FILE *fp = requested ? stdout : stderr;
5491         zprop_desc_t *pdtbl = zfs_prop_get_table();
5492         const char *fmt = gettext("%-16s %-14s\t%s\n");
5493
5494         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
5495             HELP_ALLOW));
5496         (void) fprintf(fp, gettext("Options:\n"));
5497         for (i = 0; i < (un ? unallow_size : allow_size); i += 2) {
5498                 const char *opt = opt_desc[i];
5499                 const char *optdsc = opt_desc[i + 1];
5500                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
5501         }
5502
5503         (void) fprintf(fp, gettext("\nThe following permissions are "
5504             "supported:\n\n"));
5505         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
5506             gettext("NOTES"));
5507         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
5508                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
5509                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
5510                 const char *perm_type = deleg_perm_type(perm_note);
5511                 const char *perm_comment = deleg_perm_comment(perm_note);
5512                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
5513         }
5514
5515         for (i = 0; i < ZFS_NUM_PROPS; i++) {
5516                 zprop_desc_t *pd = &pdtbl[i];
5517                 if (pd->pd_visible != B_TRUE)
5518                         continue;
5519
5520                 if (pd->pd_attr == PROP_READONLY)
5521                         continue;
5522
5523                 props[count++] = pd->pd_name;
5524         }
5525         props[count] = NULL;
5526
5527         qsort(props, count, sizeof (char *), prop_cmp);
5528
5529         for (i = 0; i < count; i++)
5530                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
5531
5532         if (msg != NULL)
5533                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
5534
5535         exit(requested ? 0 : 2);
5536 }
5537
5538 static inline const char *
5539 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
5540     char **permsp)
5541 {
5542         if (un && argc == expected_argc - 1)
5543                 *permsp = NULL;
5544         else if (argc == expected_argc)
5545                 *permsp = argv[argc - 2];
5546         else
5547                 allow_usage(un, B_FALSE,
5548                     gettext("wrong number of parameters\n"));
5549
5550         return (argv[argc - 1]);
5551 }
5552
5553 static void
5554 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
5555 {
5556         int uge_sum = opts->user + opts->group + opts->everyone;
5557         int csuge_sum = opts->create + opts->set + uge_sum;
5558         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
5559         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
5560
5561         if (uge_sum > 1)
5562                 allow_usage(un, B_FALSE,
5563                     gettext("-u, -g, and -e are mutually exclusive\n"));
5564
5565         if (opts->prt_usage) {
5566                 if (argc == 0 && all_sum == 0)
5567                         allow_usage(un, B_TRUE, NULL);
5568                 else
5569                         usage(B_FALSE);
5570         }
5571
5572         if (opts->set) {
5573                 if (csuge_sum > 1)
5574                         allow_usage(un, B_FALSE,
5575                             gettext("invalid options combined with -s\n"));
5576
5577                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
5578                 if (argv[0][0] != '@')
5579                         allow_usage(un, B_FALSE,
5580                             gettext("invalid set name: missing '@' prefix\n"));
5581                 opts->who = argv[0];
5582         } else if (opts->create) {
5583                 if (ldcsuge_sum > 1)
5584                         allow_usage(un, B_FALSE,
5585                             gettext("invalid options combined with -c\n"));
5586                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5587         } else if (opts->everyone) {
5588                 if (csuge_sum > 1)
5589                         allow_usage(un, B_FALSE,
5590                             gettext("invalid options combined with -e\n"));
5591                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5592         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
5593             == 0) {
5594                 opts->everyone = B_TRUE;
5595                 argc--;
5596                 argv++;
5597                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5598         } else if (argc == 1 && !un) {
5599                 opts->prt_perms = B_TRUE;
5600                 opts->dataset = argv[argc-1];
5601         } else {
5602                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
5603                 opts->who = argv[0];
5604         }
5605
5606         if (!opts->local && !opts->descend) {
5607                 opts->local = B_TRUE;
5608                 opts->descend = B_TRUE;
5609         }
5610 }
5611
5612 static void
5613 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
5614     const char *who, char *perms, nvlist_t *top_nvl)
5615 {
5616         int i;
5617         char ld[2] = { '\0', '\0' };
5618         char who_buf[MAXNAMELEN + 32];
5619         char base_type = '\0';
5620         char set_type = '\0';
5621         nvlist_t *base_nvl = NULL;
5622         nvlist_t *set_nvl = NULL;
5623         nvlist_t *nvl;
5624
5625         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
5626                 nomem();
5627         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
5628                 nomem();
5629
5630         switch (type) {
5631         case ZFS_DELEG_NAMED_SET_SETS:
5632         case ZFS_DELEG_NAMED_SET:
5633                 set_type = ZFS_DELEG_NAMED_SET_SETS;
5634                 base_type = ZFS_DELEG_NAMED_SET;
5635                 ld[0] = ZFS_DELEG_NA;
5636                 break;
5637         case ZFS_DELEG_CREATE_SETS:
5638         case ZFS_DELEG_CREATE:
5639                 set_type = ZFS_DELEG_CREATE_SETS;
5640                 base_type = ZFS_DELEG_CREATE;
5641                 ld[0] = ZFS_DELEG_NA;
5642                 break;
5643         case ZFS_DELEG_USER_SETS:
5644         case ZFS_DELEG_USER:
5645                 set_type = ZFS_DELEG_USER_SETS;
5646                 base_type = ZFS_DELEG_USER;
5647                 if (local)
5648                         ld[0] = ZFS_DELEG_LOCAL;
5649                 if (descend)
5650                         ld[1] = ZFS_DELEG_DESCENDENT;
5651                 break;
5652         case ZFS_DELEG_GROUP_SETS:
5653         case ZFS_DELEG_GROUP:
5654                 set_type = ZFS_DELEG_GROUP_SETS;
5655                 base_type = ZFS_DELEG_GROUP;
5656                 if (local)
5657                         ld[0] = ZFS_DELEG_LOCAL;
5658                 if (descend)
5659                         ld[1] = ZFS_DELEG_DESCENDENT;
5660                 break;
5661         case ZFS_DELEG_EVERYONE_SETS:
5662         case ZFS_DELEG_EVERYONE:
5663                 set_type = ZFS_DELEG_EVERYONE_SETS;
5664                 base_type = ZFS_DELEG_EVERYONE;
5665                 if (local)
5666                         ld[0] = ZFS_DELEG_LOCAL;
5667                 if (descend)
5668                         ld[1] = ZFS_DELEG_DESCENDENT;
5669                 break;
5670
5671         default:
5672                 assert(set_type != '\0' && base_type != '\0');
5673         }
5674
5675         if (perms != NULL) {
5676                 char *curr = perms;
5677                 char *end = curr + strlen(perms);
5678
5679                 while (curr < end) {
5680                         char *delim = strchr(curr, ',');
5681                         if (delim == NULL)
5682                                 delim = end;
5683                         else
5684                                 *delim = '\0';
5685
5686                         if (curr[0] == '@')
5687                                 nvl = set_nvl;
5688                         else
5689                                 nvl = base_nvl;
5690
5691                         (void) nvlist_add_boolean(nvl, curr);
5692                         if (delim != end)
5693                                 *delim = ',';
5694                         curr = delim + 1;
5695                 }
5696
5697                 for (i = 0; i < 2; i++) {
5698                         char locality = ld[i];
5699                         if (locality == 0)
5700                                 continue;
5701
5702                         if (!nvlist_empty(base_nvl)) {
5703                                 if (who != NULL)
5704                                         (void) snprintf(who_buf,
5705                                             sizeof (who_buf), "%c%c$%s",
5706                                             base_type, locality, who);
5707                                 else
5708                                         (void) snprintf(who_buf,
5709                                             sizeof (who_buf), "%c%c$",
5710                                             base_type, locality);
5711
5712                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5713                                     base_nvl);
5714                         }
5715
5716
5717                         if (!nvlist_empty(set_nvl)) {
5718                                 if (who != NULL)
5719                                         (void) snprintf(who_buf,
5720                                             sizeof (who_buf), "%c%c$%s",
5721                                             set_type, locality, who);
5722                                 else
5723                                         (void) snprintf(who_buf,
5724                                             sizeof (who_buf), "%c%c$",
5725                                             set_type, locality);
5726
5727                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5728                                     set_nvl);
5729                         }
5730                 }
5731         } else {
5732                 for (i = 0; i < 2; i++) {
5733                         char locality = ld[i];
5734                         if (locality == 0)
5735                                 continue;
5736
5737                         if (who != NULL)
5738                                 (void) snprintf(who_buf, sizeof (who_buf),
5739                                     "%c%c$%s", base_type, locality, who);
5740                         else
5741                                 (void) snprintf(who_buf, sizeof (who_buf),
5742                                     "%c%c$", base_type, locality);
5743                         (void) nvlist_add_boolean(top_nvl, who_buf);
5744
5745                         if (who != NULL)
5746                                 (void) snprintf(who_buf, sizeof (who_buf),
5747                                     "%c%c$%s", set_type, locality, who);
5748                         else
5749                                 (void) snprintf(who_buf, sizeof (who_buf),
5750                                     "%c%c$", set_type, locality);
5751                         (void) nvlist_add_boolean(top_nvl, who_buf);
5752                 }
5753         }
5754 }
5755
5756 static int
5757 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
5758 {
5759         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
5760                 nomem();
5761
5762         if (opts->set) {
5763                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
5764                     opts->descend, opts->who, opts->perms, *nvlp);
5765         } else if (opts->create) {
5766                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
5767                     opts->descend, NULL, opts->perms, *nvlp);
5768         } else if (opts->everyone) {
5769                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
5770                     opts->descend, NULL, opts->perms, *nvlp);
5771         } else {
5772                 char *curr = opts->who;
5773                 char *end = curr + strlen(curr);
5774
5775                 while (curr < end) {
5776                         const char *who;
5777                         zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
5778                         char *endch;
5779                         char *delim = strchr(curr, ',');
5780                         char errbuf[256];
5781                         char id[64];
5782                         struct passwd *p = NULL;
5783                         struct group *g = NULL;
5784
5785                         uid_t rid;
5786                         if (delim == NULL)
5787                                 delim = end;
5788                         else
5789                                 *delim = '\0';
5790
5791                         rid = (uid_t)strtol(curr, &endch, 0);
5792                         if (opts->user) {
5793                                 who_type = ZFS_DELEG_USER;
5794                                 if (*endch != '\0')
5795                                         p = getpwnam(curr);
5796                                 else
5797                                         p = getpwuid(rid);
5798
5799                                 if (p != NULL)
5800                                         rid = p->pw_uid;
5801                                 else if (*endch != '\0') {
5802                                         (void) snprintf(errbuf, 256, gettext(
5803                                             "invalid user %s\n"), curr);
5804                                         allow_usage(un, B_TRUE, errbuf);
5805                                 }
5806                         } else if (opts->group) {
5807                                 who_type = ZFS_DELEG_GROUP;
5808                                 if (*endch != '\0')
5809                                         g = getgrnam(curr);
5810                                 else
5811                                         g = getgrgid(rid);
5812
5813                                 if (g != NULL)
5814                                         rid = g->gr_gid;
5815                                 else if (*endch != '\0') {
5816                                         (void) snprintf(errbuf, 256, gettext(
5817                                             "invalid group %s\n"),  curr);
5818                                         allow_usage(un, B_TRUE, errbuf);
5819                                 }
5820                         } else {
5821                                 if (*endch != '\0') {
5822                                         p = getpwnam(curr);
5823                                 } else {
5824                                         p = getpwuid(rid);
5825                                 }
5826
5827                                 if (p == NULL) {
5828                                         if (*endch != '\0') {
5829                                                 g = getgrnam(curr);
5830                                         } else {
5831                                                 g = getgrgid(rid);
5832                                         }
5833                                 }
5834
5835                                 if (p != NULL) {
5836                                         who_type = ZFS_DELEG_USER;
5837                                         rid = p->pw_uid;
5838                                 } else if (g != NULL) {
5839                                         who_type = ZFS_DELEG_GROUP;
5840                                         rid = g->gr_gid;
5841                                 } else {
5842                                         (void) snprintf(errbuf, 256, gettext(
5843                                             "invalid user/group %s\n"), curr);
5844                                         allow_usage(un, B_TRUE, errbuf);
5845                                 }
5846                         }
5847
5848                         (void) sprintf(id, "%u", rid);
5849                         who = id;
5850
5851                         store_allow_perm(who_type, opts->local,
5852                             opts->descend, who, opts->perms, *nvlp);
5853                         curr = delim + 1;
5854                 }
5855         }
5856
5857         return (0);
5858 }
5859
5860 static void
5861 print_set_creat_perms(uu_avl_t *who_avl)
5862 {
5863         const char *sc_title[] = {
5864                 gettext("Permission sets:\n"),
5865                 gettext("Create time permissions:\n"),
5866                 NULL
5867         };
5868         who_perm_node_t *who_node = NULL;
5869         int prev_weight = -1;
5870
5871         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5872             who_node = uu_avl_next(who_avl, who_node)) {
5873                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5874                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5875                 const char *who_name = who_node->who_perm.who_name;
5876                 int weight = who_type2weight(who_type);
5877                 boolean_t first = B_TRUE;
5878                 deleg_perm_node_t *deleg_node;
5879
5880                 if (prev_weight != weight) {
5881                         (void) printf("%s", sc_title[weight]);
5882                         prev_weight = weight;
5883                 }
5884
5885                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5886                         (void) printf("\t");
5887                 else
5888                         (void) printf("\t%s ", who_name);
5889
5890                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5891                     deleg_node = uu_avl_next(avl, deleg_node)) {
5892                         if (first) {
5893                                 (void) printf("%s",
5894                                     deleg_node->dpn_perm.dp_name);
5895                                 first = B_FALSE;
5896                         } else
5897                                 (void) printf(",%s",
5898                                     deleg_node->dpn_perm.dp_name);
5899                 }
5900
5901                 (void) printf("\n");
5902         }
5903 }
5904
5905 static void
5906 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5907     const char *title)
5908 {
5909         who_perm_node_t *who_node = NULL;
5910         boolean_t prt_title = B_TRUE;
5911         uu_avl_walk_t *walk;
5912
5913         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5914                 nomem();
5915
5916         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5917                 const char *who_name = who_node->who_perm.who_name;
5918                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5919                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5920                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5921                 char delim = ' ';
5922                 deleg_perm_node_t *deleg_node;
5923                 boolean_t prt_who = B_TRUE;
5924
5925                 for (deleg_node = uu_avl_first(avl);
5926                     deleg_node != NULL;
5927                     deleg_node = uu_avl_next(avl, deleg_node)) {
5928                         if (local != deleg_node->dpn_perm.dp_local ||
5929                             descend != deleg_node->dpn_perm.dp_descend)
5930                                 continue;
5931
5932                         if (prt_who) {
5933                                 const char *who = NULL;
5934                                 if (prt_title) {
5935                                         prt_title = B_FALSE;
5936                                         (void) printf("%s", title);
5937                                 }
5938
5939                                 switch (who_type) {
5940                                 case ZFS_DELEG_USER_SETS:
5941                                 case ZFS_DELEG_USER:
5942                                         who = gettext("user");
5943                                         if (nice_who_name)
5944                                                 who_name  = nice_who_name;
5945                                         break;
5946                                 case ZFS_DELEG_GROUP_SETS:
5947                                 case ZFS_DELEG_GROUP:
5948                                         who = gettext("group");
5949                                         if (nice_who_name)
5950                                                 who_name  = nice_who_name;
5951                                         break;
5952                                 case ZFS_DELEG_EVERYONE_SETS:
5953                                 case ZFS_DELEG_EVERYONE:
5954                                         who = gettext("everyone");
5955                                         who_name = NULL;
5956                                         break;
5957
5958                                 default:
5959                                         assert(who != NULL);
5960                                 }
5961
5962                                 prt_who = B_FALSE;
5963                                 if (who_name == NULL)
5964                                         (void) printf("\t%s", who);
5965                                 else
5966                                         (void) printf("\t%s %s", who, who_name);
5967                         }
5968
5969                         (void) printf("%c%s", delim,
5970                             deleg_node->dpn_perm.dp_name);
5971                         delim = ',';
5972                 }
5973
5974                 if (!prt_who)
5975                         (void) printf("\n");
5976         }
5977
5978         uu_avl_walk_end(walk);
5979 }
5980
5981 static void
5982 print_fs_perms(fs_perm_set_t *fspset)
5983 {
5984         fs_perm_node_t *node = NULL;
5985         char buf[MAXNAMELEN + 32];
5986         const char *dsname = buf;
5987
5988         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5989             node = uu_list_next(fspset->fsps_list, node)) {
5990                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5991                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5992                 int left = 0;
5993
5994                 (void) snprintf(buf, sizeof (buf),
5995                     gettext("---- Permissions on %s "),
5996                     node->fspn_fsperm.fsp_name);
5997                 (void) printf("%s", dsname);
5998                 left = 70 - strlen(buf);
5999                 while (left-- > 0)
6000                         (void) printf("-");
6001                 (void) printf("\n");
6002
6003                 print_set_creat_perms(sc_avl);
6004                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
6005                     gettext("Local permissions:\n"));
6006                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
6007                     gettext("Descendent permissions:\n"));
6008                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
6009                     gettext("Local+Descendent permissions:\n"));
6010         }
6011 }
6012
6013 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
6014
6015 struct deleg_perms {
6016         boolean_t un;
6017         nvlist_t *nvl;
6018 };
6019
6020 static int
6021 set_deleg_perms(zfs_handle_t *zhp, void *data)
6022 {
6023         struct deleg_perms *perms = (struct deleg_perms *)data;
6024         zfs_type_t zfs_type = zfs_get_type(zhp);
6025
6026         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
6027                 return (0);
6028
6029         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
6030 }
6031
6032 static int
6033 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
6034 {
6035         zfs_handle_t *zhp;
6036         nvlist_t *perm_nvl = NULL;
6037         nvlist_t *update_perm_nvl = NULL;
6038         int error = 1;
6039         int c;
6040         struct allow_opts opts = { 0 };
6041
6042         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
6043
6044         /* check opts */
6045         while ((c = getopt(argc, argv, optstr)) != -1) {
6046                 switch (c) {
6047                 case 'l':
6048                         opts.local = B_TRUE;
6049                         break;
6050                 case 'd':
6051                         opts.descend = B_TRUE;
6052                         break;
6053                 case 'u':
6054                         opts.user = B_TRUE;
6055                         break;
6056                 case 'g':
6057                         opts.group = B_TRUE;
6058                         break;
6059                 case 'e':
6060                         opts.everyone = B_TRUE;
6061                         break;
6062                 case 's':
6063                         opts.set = B_TRUE;
6064                         break;
6065                 case 'c':
6066                         opts.create = B_TRUE;
6067                         break;
6068                 case 'r':
6069                         opts.recursive = B_TRUE;
6070                         break;
6071                 case ':':
6072                         (void) fprintf(stderr, gettext("missing argument for "
6073                             "'%c' option\n"), optopt);
6074                         usage(B_FALSE);
6075                         break;
6076                 case 'h':
6077                         opts.prt_usage = B_TRUE;
6078                         break;
6079                 case '?':
6080                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6081                             optopt);
6082                         usage(B_FALSE);
6083                 }
6084         }
6085
6086         argc -= optind;
6087         argv += optind;
6088
6089         /* check arguments */
6090         parse_allow_args(argc, argv, un, &opts);
6091
6092         /* try to open the dataset */
6093         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
6094             ZFS_TYPE_VOLUME)) == NULL) {
6095                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
6096                     opts.dataset);
6097                 return (-1);
6098         }
6099
6100         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
6101                 goto cleanup2;
6102
6103         fs_perm_set_init(&fs_perm_set);
6104         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
6105                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
6106                 goto cleanup1;
6107         }
6108
6109         if (opts.prt_perms)
6110                 print_fs_perms(&fs_perm_set);
6111         else {
6112                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
6113                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
6114                         goto cleanup0;
6115
6116                 if (un && opts.recursive) {
6117                         struct deleg_perms data = { un, update_perm_nvl };
6118                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
6119                             &data) != 0)
6120                                 goto cleanup0;
6121                 }
6122         }
6123
6124         error = 0;
6125
6126 cleanup0:
6127         nvlist_free(perm_nvl);
6128         nvlist_free(update_perm_nvl);
6129 cleanup1:
6130         fs_perm_set_fini(&fs_perm_set);
6131 cleanup2:
6132         zfs_close(zhp);
6133
6134         return (error);
6135 }
6136
6137 static int
6138 zfs_do_allow(int argc, char **argv)
6139 {
6140         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
6141 }
6142
6143 static int
6144 zfs_do_unallow(int argc, char **argv)
6145 {
6146         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
6147 }
6148
6149 static int
6150 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
6151 {
6152         int errors = 0;
6153         int i;
6154         const char *tag;
6155         boolean_t recursive = B_FALSE;
6156         const char *opts = holding ? "rt" : "r";
6157         int c;
6158
6159         /* check options */
6160         while ((c = getopt(argc, argv, opts)) != -1) {
6161                 switch (c) {
6162                 case 'r':
6163                         recursive = B_TRUE;
6164                         break;
6165                 case '?':
6166                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6167                             optopt);
6168                         usage(B_FALSE);
6169                 }
6170         }
6171
6172         argc -= optind;
6173         argv += optind;
6174
6175         /* check number of arguments */
6176         if (argc < 2)
6177                 usage(B_FALSE);
6178
6179         tag = argv[0];
6180         --argc;
6181         ++argv;
6182
6183         if (holding && tag[0] == '.') {
6184                 /* tags starting with '.' are reserved for libzfs */
6185                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
6186                 usage(B_FALSE);
6187         }
6188
6189         for (i = 0; i < argc; ++i) {
6190                 zfs_handle_t *zhp;
6191                 char parent[ZFS_MAX_DATASET_NAME_LEN];
6192                 const char *delim;
6193                 char *path = argv[i];
6194
6195                 delim = strchr(path, '@');
6196                 if (delim == NULL) {
6197                         (void) fprintf(stderr,
6198                             gettext("'%s' is not a snapshot\n"), path);
6199                         ++errors;
6200                         continue;
6201                 }
6202                 (void) strncpy(parent, path, delim - path);
6203                 parent[delim - path] = '\0';
6204
6205                 zhp = zfs_open(g_zfs, parent,
6206                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
6207                 if (zhp == NULL) {
6208                         ++errors;
6209                         continue;
6210                 }
6211                 if (holding) {
6212                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
6213                                 ++errors;
6214                 } else {
6215                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
6216                                 ++errors;
6217                 }
6218                 zfs_close(zhp);
6219         }
6220
6221         return (errors != 0);
6222 }
6223
6224 /*
6225  * zfs hold [-r] [-t] <tag> <snap> ...
6226  *
6227  *      -r      Recursively hold
6228  *
6229  * Apply a user-hold with the given tag to the list of snapshots.
6230  */
6231 static int
6232 zfs_do_hold(int argc, char **argv)
6233 {
6234         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
6235 }
6236
6237 /*
6238  * zfs release [-r] <tag> <snap> ...
6239  *
6240  *      -r      Recursively release
6241  *
6242  * Release a user-hold with the given tag from the list of snapshots.
6243  */
6244 static int
6245 zfs_do_release(int argc, char **argv)
6246 {
6247         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
6248 }
6249
6250 typedef struct holds_cbdata {
6251         boolean_t       cb_recursive;
6252         const char      *cb_snapname;
6253         nvlist_t        **cb_nvlp;
6254         size_t          cb_max_namelen;
6255         size_t          cb_max_taglen;
6256 } holds_cbdata_t;
6257
6258 #define STRFTIME_FMT_STR "%a %b %e %H:%M %Y"
6259 #define DATETIME_BUF_LEN (32)
6260 /*
6261  *
6262  */
6263 static void
6264 print_holds(boolean_t scripted, int nwidth, int tagwidth, nvlist_t *nvl)
6265 {
6266         int i;
6267         nvpair_t *nvp = NULL;
6268         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
6269         const char *col;
6270
6271         if (!scripted) {
6272                 for (i = 0; i < 3; i++) {
6273                         col = gettext(hdr_cols[i]);
6274                         if (i < 2)
6275                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
6276                                     col);
6277                         else
6278                                 (void) printf("%s\n", col);
6279                 }
6280         }
6281
6282         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
6283                 char *zname = nvpair_name(nvp);
6284                 nvlist_t *nvl2;
6285                 nvpair_t *nvp2 = NULL;
6286                 (void) nvpair_value_nvlist(nvp, &nvl2);
6287                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
6288                         char tsbuf[DATETIME_BUF_LEN];
6289                         char *tagname = nvpair_name(nvp2);
6290                         uint64_t val = 0;
6291                         time_t time;
6292                         struct tm t;
6293
6294                         (void) nvpair_value_uint64(nvp2, &val);
6295                         time = (time_t)val;
6296                         (void) localtime_r(&time, &t);
6297                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
6298                             gettext(STRFTIME_FMT_STR), &t);
6299
6300                         if (scripted) {
6301                                 (void) printf("%s\t%s\t%s\n", zname,
6302                                     tagname, tsbuf);
6303                         } else {
6304                                 (void) printf("%-*s  %-*s  %s\n", nwidth,
6305                                     zname, tagwidth, tagname, tsbuf);
6306                         }
6307                 }
6308         }
6309 }
6310
6311 /*
6312  * Generic callback function to list a dataset or snapshot.
6313  */
6314 static int
6315 holds_callback(zfs_handle_t *zhp, void *data)
6316 {
6317         holds_cbdata_t *cbp = data;
6318         nvlist_t *top_nvl = *cbp->cb_nvlp;
6319         nvlist_t *nvl = NULL;
6320         nvpair_t *nvp = NULL;
6321         const char *zname = zfs_get_name(zhp);
6322         size_t znamelen = strlen(zname);
6323
6324         if (cbp->cb_recursive) {
6325                 const char *snapname;
6326                 char *delim  = strchr(zname, '@');
6327                 if (delim == NULL)
6328                         return (0);
6329
6330                 snapname = delim + 1;
6331                 if (strcmp(cbp->cb_snapname, snapname))
6332                         return (0);
6333         }
6334
6335         if (zfs_get_holds(zhp, &nvl) != 0)
6336                 return (-1);
6337
6338         if (znamelen > cbp->cb_max_namelen)
6339                 cbp->cb_max_namelen  = znamelen;
6340
6341         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
6342                 const char *tag = nvpair_name(nvp);
6343                 size_t taglen = strlen(tag);
6344                 if (taglen > cbp->cb_max_taglen)
6345                         cbp->cb_max_taglen  = taglen;
6346         }
6347
6348         return (nvlist_add_nvlist(top_nvl, zname, nvl));
6349 }
6350
6351 /*
6352  * zfs holds [-rH] <snap> ...
6353  *
6354  *      -r      Lists holds that are set on the named snapshots recursively.
6355  *      -H      Scripted mode; elide headers and separate columns by tabs.
6356  */
6357 static int
6358 zfs_do_holds(int argc, char **argv)
6359 {
6360         int errors = 0;
6361         int c;
6362         int i;
6363         boolean_t scripted = B_FALSE;
6364         boolean_t recursive = B_FALSE;
6365         const char *opts = "rH";
6366         nvlist_t *nvl;
6367
6368         int types = ZFS_TYPE_SNAPSHOT;
6369         holds_cbdata_t cb = { 0 };
6370
6371         int limit = 0;
6372         int ret = 0;
6373         int flags = 0;
6374
6375         /* check options */
6376         while ((c = getopt(argc, argv, opts)) != -1) {
6377                 switch (c) {
6378                 case 'r':
6379                         recursive = B_TRUE;
6380                         break;
6381                 case 'H':
6382                         scripted = B_TRUE;
6383                         break;
6384                 case '?':
6385                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6386                             optopt);
6387                         usage(B_FALSE);
6388                 }
6389         }
6390
6391         if (recursive) {
6392                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
6393                 flags |= ZFS_ITER_RECURSE;
6394         }
6395
6396         argc -= optind;
6397         argv += optind;
6398
6399         /* check number of arguments */
6400         if (argc < 1)
6401                 usage(B_FALSE);
6402
6403         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
6404                 nomem();
6405
6406         for (i = 0; i < argc; ++i) {
6407                 char *snapshot = argv[i];
6408                 const char *delim;
6409                 const char *snapname;
6410
6411                 delim = strchr(snapshot, '@');
6412                 if (delim == NULL) {
6413                         (void) fprintf(stderr,
6414                             gettext("'%s' is not a snapshot\n"), snapshot);
6415                         ++errors;
6416                         continue;
6417                 }
6418                 snapname = delim + 1;
6419                 if (recursive)
6420                         snapshot[delim - snapshot] = '\0';
6421
6422                 cb.cb_recursive = recursive;
6423                 cb.cb_snapname = snapname;
6424                 cb.cb_nvlp = &nvl;
6425
6426                 /*
6427                  *  1. collect holds data, set format options
6428                  */
6429                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
6430                     holds_callback, &cb);
6431                 if (ret != 0)
6432                         ++errors;
6433         }
6434
6435         /*
6436          *  2. print holds data
6437          */
6438         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
6439
6440         if (nvlist_empty(nvl))
6441                 (void) fprintf(stderr, gettext("no datasets available\n"));
6442
6443         nvlist_free(nvl);
6444
6445         return (0 != errors);
6446 }
6447
6448 #define CHECK_SPINNER 30
6449 #define SPINNER_TIME 3          /* seconds */
6450 #define MOUNT_TIME 1            /* seconds */
6451
6452 typedef struct get_all_state {
6453         boolean_t       ga_verbose;
6454         get_all_cb_t    *ga_cbp;
6455 } get_all_state_t;
6456
6457 static int
6458 get_one_dataset(zfs_handle_t *zhp, void *data)
6459 {
6460         static char *spin[] = { "-", "\\", "|", "/" };
6461         static int spinval = 0;
6462         static int spincheck = 0;
6463         static time_t last_spin_time = (time_t)0;
6464         get_all_state_t *state = data;
6465         zfs_type_t type = zfs_get_type(zhp);
6466
6467         if (state->ga_verbose) {
6468                 if (--spincheck < 0) {
6469                         time_t now = time(NULL);
6470                         if (last_spin_time + SPINNER_TIME < now) {
6471                                 update_progress(spin[spinval++ % 4]);
6472                                 last_spin_time = now;
6473                         }
6474                         spincheck = CHECK_SPINNER;
6475                 }
6476         }
6477
6478         /*
6479          * Iterate over any nested datasets.
6480          */
6481         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
6482                 zfs_close(zhp);
6483                 return (1);
6484         }
6485
6486         /*
6487          * Skip any datasets whose type does not match.
6488          */
6489         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
6490                 zfs_close(zhp);
6491                 return (0);
6492         }
6493         libzfs_add_handle(state->ga_cbp, zhp);
6494         assert(state->ga_cbp->cb_used <= state->ga_cbp->cb_alloc);
6495
6496         return (0);
6497 }
6498
6499 static void
6500 get_all_datasets(get_all_cb_t *cbp, boolean_t verbose)
6501 {
6502         get_all_state_t state = {
6503             .ga_verbose = verbose,
6504             .ga_cbp = cbp
6505         };
6506
6507         if (verbose)
6508                 set_progress_header(gettext("Reading ZFS config"));
6509         (void) zfs_iter_root(g_zfs, get_one_dataset, &state);
6510
6511         if (verbose)
6512                 finish_progress(gettext("done."));
6513 }
6514
6515 /*
6516  * Generic callback for sharing or mounting filesystems.  Because the code is so
6517  * similar, we have a common function with an extra parameter to determine which
6518  * mode we are using.
6519  */
6520 typedef enum { OP_SHARE, OP_MOUNT } share_mount_op_t;
6521
6522 typedef struct share_mount_state {
6523         share_mount_op_t        sm_op;
6524         boolean_t       sm_verbose;
6525         int     sm_flags;
6526         char    *sm_options;
6527         char    *sm_proto; /* only valid for OP_SHARE */
6528         pthread_mutex_t sm_lock; /* protects the remaining fields */
6529         uint_t  sm_total; /* number of filesystems to process */
6530         uint_t  sm_done; /* number of filesystems processed */
6531         int     sm_status; /* -1 if any of the share/mount operations failed */
6532 } share_mount_state_t;
6533
6534 /*
6535  * Share or mount a dataset.
6536  */
6537 static int
6538 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
6539     boolean_t explicit, const char *options)
6540 {
6541         char mountpoint[ZFS_MAXPROPLEN];
6542         char shareopts[ZFS_MAXPROPLEN];
6543         char smbshareopts[ZFS_MAXPROPLEN];
6544         const char *cmdname = op == OP_SHARE ? "share" : "mount";
6545         struct mnttab mnt;
6546         uint64_t zoned, canmount;
6547         boolean_t shared_nfs, shared_smb;
6548
6549         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
6550
6551         /*
6552          * Check to make sure we can mount/share this dataset.  If we
6553          * are in the global zone and the filesystem is exported to a
6554          * local zone, or if we are in a local zone and the
6555          * filesystem is not exported, then it is an error.
6556          */
6557         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
6558
6559         if (zoned && getzoneid() == GLOBAL_ZONEID) {
6560                 if (!explicit)
6561                         return (0);
6562
6563                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6564                     "dataset is exported to a local zone\n"), cmdname,
6565                     zfs_get_name(zhp));
6566                 return (1);
6567
6568         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
6569                 if (!explicit)
6570                         return (0);
6571
6572                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6573                     "permission denied\n"), cmdname,
6574                     zfs_get_name(zhp));
6575                 return (1);
6576         }
6577
6578         /*
6579          * Ignore any filesystems which don't apply to us. This
6580          * includes those with a legacy mountpoint, or those with
6581          * legacy share options.
6582          */
6583         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6584             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
6585         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
6586             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
6587         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
6588             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
6589
6590         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
6591             strcmp(smbshareopts, "off") == 0) {
6592                 if (!explicit)
6593                         return (0);
6594
6595                 (void) fprintf(stderr, gettext("cannot share '%s': "
6596                     "legacy share\n"), zfs_get_name(zhp));
6597                 (void) fprintf(stderr, gettext("use share(1M) to "
6598                     "share this filesystem, or set "
6599                     "sharenfs property on\n"));
6600                 return (1);
6601         }
6602
6603         /*
6604          * We cannot share or mount legacy filesystems. If the
6605          * shareopts is non-legacy but the mountpoint is legacy, we
6606          * treat it as a legacy share.
6607          */
6608         if (strcmp(mountpoint, "legacy") == 0) {
6609                 if (!explicit)
6610                         return (0);
6611
6612                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6613                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
6614                 (void) fprintf(stderr, gettext("use %s(1M) to "
6615                     "%s this filesystem\n"), cmdname, cmdname);
6616                 return (1);
6617         }
6618
6619         if (strcmp(mountpoint, "none") == 0) {
6620                 if (!explicit)
6621                         return (0);
6622
6623                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
6624                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
6625                 return (1);
6626         }
6627
6628         /*
6629          * canmount     explicit        outcome
6630          * on           no              pass through
6631          * on           yes             pass through
6632          * off          no              return 0
6633          * off          yes             display error, return 1
6634          * noauto       no              return 0
6635          * noauto       yes             pass through
6636          */
6637         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
6638         if (canmount == ZFS_CANMOUNT_OFF) {
6639                 if (!explicit)
6640                         return (0);
6641
6642                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6643                     "'canmount' property is set to 'off'\n"), cmdname,
6644                     zfs_get_name(zhp));
6645                 return (1);
6646         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
6647                 /*
6648                  * When performing a 'zfs mount -a', we skip any mounts for
6649                  * datasets that have 'noauto' set. Sharing a dataset with
6650                  * 'noauto' set is only allowed if it's mounted.
6651                  */
6652                 if (op == OP_MOUNT)
6653                         return (0);
6654                 if (op == OP_SHARE && !zfs_is_mounted(zhp, NULL)) {
6655                         /* also purge it from existing exports */
6656                         zfs_unshareall_bypath(zhp, mountpoint);
6657                         return (0);
6658                 }
6659         }
6660
6661         /*
6662          * If this filesystem is encrypted and does not have
6663          * a loaded key, we can not mount it.
6664          */
6665         if ((flags & MS_CRYPT) == 0 &&
6666             zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) != ZIO_CRYPT_OFF &&
6667             zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS) ==
6668             ZFS_KEYSTATUS_UNAVAILABLE) {
6669                 if (!explicit)
6670                         return (0);
6671
6672                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6673                     "encryption key not loaded\n"), cmdname, zfs_get_name(zhp));
6674                 return (1);
6675         }
6676
6677         /*
6678          * If this filesystem is inconsistent and has a receive resume
6679          * token, we can not mount it.
6680          */
6681         if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
6682             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
6683             NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
6684                 if (!explicit)
6685                         return (0);
6686
6687                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6688                     "Contains partially-completed state from "
6689                     "\"zfs receive -s\", which can be resumed with "
6690                     "\"zfs send -t\"\n"),
6691                     cmdname, zfs_get_name(zhp));
6692                 return (1);
6693         }
6694
6695         if (zfs_prop_get_int(zhp, ZFS_PROP_REDACTED) && !(flags & MS_FORCE)) {
6696                 if (!explicit)
6697                         return (0);
6698
6699                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6700                     "Dataset is not complete, was created by receiving "
6701                     "a redacted zfs send stream.\n"), cmdname,
6702                     zfs_get_name(zhp));
6703                 return (1);
6704         }
6705
6706         /*
6707          * At this point, we have verified that the mountpoint and/or
6708          * shareopts are appropriate for auto management. If the
6709          * filesystem is already mounted or shared, return (failing
6710          * for explicit requests); otherwise mount or share the
6711          * filesystem.
6712          */
6713         switch (op) {
6714         case OP_SHARE:
6715
6716                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
6717                 shared_smb = zfs_is_shared_smb(zhp, NULL);
6718
6719                 if ((shared_nfs && shared_smb) ||
6720                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
6721                     strcmp(smbshareopts, "off") == 0) ||
6722                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
6723                     strcmp(shareopts, "off") == 0)) {
6724                         if (!explicit)
6725                                 return (0);
6726
6727                         (void) fprintf(stderr, gettext("cannot share "
6728                             "'%s': filesystem already shared\n"),
6729                             zfs_get_name(zhp));
6730                         return (1);
6731                 }
6732
6733                 if (!zfs_is_mounted(zhp, NULL) &&
6734                     zfs_mount(zhp, NULL, flags) != 0)
6735                         return (1);
6736
6737                 if (protocol == NULL) {
6738                         if (zfs_shareall(zhp) != 0)
6739                                 return (1);
6740                 } else if (strcmp(protocol, "nfs") == 0) {
6741                         if (zfs_share_nfs(zhp))
6742                                 return (1);
6743                 } else if (strcmp(protocol, "smb") == 0) {
6744                         if (zfs_share_smb(zhp))
6745                                 return (1);
6746                 } else {
6747                         (void) fprintf(stderr, gettext("cannot share "
6748                             "'%s': invalid share type '%s' "
6749                             "specified\n"),
6750                             zfs_get_name(zhp), protocol);
6751                         return (1);
6752                 }
6753
6754                 break;
6755
6756         case OP_MOUNT:
6757                 if (options == NULL)
6758                         mnt.mnt_mntopts = "";
6759                 else
6760                         mnt.mnt_mntopts = (char *)options;
6761
6762                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
6763                     zfs_is_mounted(zhp, NULL)) {
6764                         if (!explicit)
6765                                 return (0);
6766
6767                         (void) fprintf(stderr, gettext("cannot mount "
6768                             "'%s': filesystem already mounted\n"),
6769                             zfs_get_name(zhp));
6770                         return (1);
6771                 }
6772
6773                 if (zfs_mount(zhp, options, flags) != 0)
6774                         return (1);
6775                 break;
6776         }
6777
6778         return (0);
6779 }
6780
6781 /*
6782  * Reports progress in the form "(current/total)".  Not thread-safe.
6783  */
6784 static void
6785 report_mount_progress(int current, int total)
6786 {
6787         static time_t last_progress_time = 0;
6788         time_t now = time(NULL);
6789         char info[32];
6790
6791         /* report 1..n instead of 0..n-1 */
6792         ++current;
6793
6794         /* display header if we're here for the first time */
6795         if (current == 1) {
6796                 set_progress_header(gettext("Mounting ZFS filesystems"));
6797         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
6798                 /* too soon to report again */
6799                 return;
6800         }
6801
6802         last_progress_time = now;
6803
6804         (void) sprintf(info, "(%d/%d)", current, total);
6805
6806         if (current == total)
6807                 finish_progress(info);
6808         else
6809                 update_progress(info);
6810 }
6811
6812 /*
6813  * zfs_foreach_mountpoint() callback that mounts or shares one filesystem and
6814  * updates the progress meter.
6815  */
6816 static int
6817 share_mount_one_cb(zfs_handle_t *zhp, void *arg)
6818 {
6819         share_mount_state_t *sms = arg;
6820         int ret;
6821
6822         ret = share_mount_one(zhp, sms->sm_op, sms->sm_flags, sms->sm_proto,
6823             B_FALSE, sms->sm_options);
6824
6825         pthread_mutex_lock(&sms->sm_lock);
6826         if (ret != 0)
6827                 sms->sm_status = ret;
6828         sms->sm_done++;
6829         if (sms->sm_verbose)
6830                 report_mount_progress(sms->sm_done, sms->sm_total);
6831         pthread_mutex_unlock(&sms->sm_lock);
6832         return (ret);
6833 }
6834
6835 static void
6836 append_options(char *mntopts, char *newopts)
6837 {
6838         int len = strlen(mntopts);
6839
6840         /* original length plus new string to append plus 1 for the comma */
6841         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
6842                 (void) fprintf(stderr, gettext("the opts argument for "
6843                     "'%s' option is too long (more than %d chars)\n"),
6844                     "-o", MNT_LINE_MAX);
6845                 usage(B_FALSE);
6846         }
6847
6848         if (*mntopts)
6849                 mntopts[len++] = ',';
6850
6851         (void) strcpy(&mntopts[len], newopts);
6852 }
6853
6854 static int
6855 share_mount(int op, int argc, char **argv)
6856 {
6857         int do_all = 0;
6858         boolean_t verbose = B_FALSE;
6859         int c, ret = 0;
6860         char *options = NULL;
6861         int flags = 0;
6862
6863         /* check options */
6864         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":alvo:Of" : "al"))
6865             != -1) {
6866                 switch (c) {
6867                 case 'a':
6868                         do_all = 1;
6869                         break;
6870                 case 'v':
6871                         verbose = B_TRUE;
6872                         break;
6873                 case 'l':
6874                         flags |= MS_CRYPT;
6875                         break;
6876                 case 'o':
6877                         if (*optarg == '\0') {
6878                                 (void) fprintf(stderr, gettext("empty mount "
6879                                     "options (-o) specified\n"));
6880                                 usage(B_FALSE);
6881                         }
6882
6883                         if (options == NULL)
6884                                 options = safe_malloc(MNT_LINE_MAX + 1);
6885
6886                         /* option validation is done later */
6887                         append_options(options, optarg);
6888                         break;
6889                 case 'O':
6890                         flags |= MS_OVERLAY;
6891                         break;
6892                 case 'f':
6893                         flags |= MS_FORCE;
6894                         break;
6895                 case ':':
6896                         (void) fprintf(stderr, gettext("missing argument for "
6897                             "'%c' option\n"), optopt);
6898                         usage(B_FALSE);
6899                         break;
6900                 case '?':
6901                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6902                             optopt);
6903                         usage(B_FALSE);
6904                 }
6905         }
6906
6907         argc -= optind;
6908         argv += optind;
6909
6910         /* check number of arguments */
6911         if (do_all) {
6912                 char *protocol = NULL;
6913
6914                 if (op == OP_SHARE && argc > 0) {
6915                         if (strcmp(argv[0], "nfs") != 0 &&
6916                             strcmp(argv[0], "smb") != 0) {
6917                                 (void) fprintf(stderr, gettext("share type "
6918                                     "must be 'nfs' or 'smb'\n"));
6919                                 usage(B_FALSE);
6920                         }
6921                         protocol = argv[0];
6922                         argc--;
6923                         argv++;
6924                 }
6925
6926                 if (argc != 0) {
6927                         (void) fprintf(stderr, gettext("too many arguments\n"));
6928                         usage(B_FALSE);
6929                 }
6930
6931                 start_progress_timer();
6932                 get_all_cb_t cb = { 0 };
6933                 get_all_datasets(&cb, verbose);
6934
6935                 if (cb.cb_used == 0) {
6936                         if (options != NULL)
6937                                 free(options);
6938                         return (0);
6939                 }
6940
6941                 share_mount_state_t share_mount_state = { 0 };
6942                 share_mount_state.sm_op = op;
6943                 share_mount_state.sm_verbose = verbose;
6944                 share_mount_state.sm_flags = flags;
6945                 share_mount_state.sm_options = options;
6946                 share_mount_state.sm_proto = protocol;
6947                 share_mount_state.sm_total = cb.cb_used;
6948                 pthread_mutex_init(&share_mount_state.sm_lock, NULL);
6949
6950                 /*
6951                  * libshare isn't mt-safe, so only do the operation in parallel
6952                  * if we're mounting. Additionally, the key-loading option must
6953                  * be serialized so that we can prompt the user for their keys
6954                  * in a consistent manner.
6955                  */
6956                 zfs_foreach_mountpoint(g_zfs, cb.cb_handles, cb.cb_used,
6957                     share_mount_one_cb, &share_mount_state,
6958                     op == OP_MOUNT && !(flags & MS_CRYPT));
6959                 zfs_commit_all_shares();
6960
6961                 ret = share_mount_state.sm_status;
6962
6963                 for (int i = 0; i < cb.cb_used; i++)
6964                         zfs_close(cb.cb_handles[i]);
6965                 free(cb.cb_handles);
6966         } else if (argc == 0) {
6967                 struct mnttab entry;
6968
6969                 if ((op == OP_SHARE) || (options != NULL)) {
6970                         (void) fprintf(stderr, gettext("missing filesystem "
6971                             "argument (specify -a for all)\n"));
6972                         usage(B_FALSE);
6973                 }
6974
6975                 /*
6976                  * When mount is given no arguments, go through
6977                  * /proc/self/mounts and display any active ZFS mounts.
6978                  * We hide any snapshots, since they are controlled
6979                  * automatically.
6980                  */
6981
6982                 /* Reopen MNTTAB to prevent reading stale data from open file */
6983                 if (freopen(MNTTAB, "r", mnttab_file) == NULL) {
6984                         if (options != NULL)
6985                                 free(options);
6986                         return (ENOENT);
6987                 }
6988
6989                 while (getmntent(mnttab_file, &entry) == 0) {
6990                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6991                             strchr(entry.mnt_special, '@') != NULL)
6992                                 continue;
6993
6994                         (void) printf("%-30s  %s\n", entry.mnt_special,
6995                             entry.mnt_mountp);
6996                 }
6997
6998         } else {
6999                 zfs_handle_t *zhp;
7000
7001                 if (argc > 1) {
7002                         (void) fprintf(stderr,
7003                             gettext("too many arguments\n"));
7004                         usage(B_FALSE);
7005                 }
7006
7007                 if ((zhp = zfs_open(g_zfs, argv[0],
7008                     ZFS_TYPE_FILESYSTEM)) == NULL) {
7009                         ret = 1;
7010                 } else {
7011                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
7012                             options);
7013                         zfs_commit_all_shares();
7014                         zfs_close(zhp);
7015                 }
7016         }
7017
7018         if (options != NULL)
7019                 free(options);
7020
7021         return (ret);
7022 }
7023
7024 /*
7025  * zfs mount -a [nfs]
7026  * zfs mount filesystem
7027  *
7028  * Mount all filesystems, or mount the given filesystem.
7029  */
7030 static int
7031 zfs_do_mount(int argc, char **argv)
7032 {
7033         return (share_mount(OP_MOUNT, argc, argv));
7034 }
7035
7036 /*
7037  * zfs share -a [nfs | smb]
7038  * zfs share filesystem
7039  *
7040  * Share all filesystems, or share the given filesystem.
7041  */
7042 static int
7043 zfs_do_share(int argc, char **argv)
7044 {
7045         return (share_mount(OP_SHARE, argc, argv));
7046 }
7047
7048 typedef struct unshare_unmount_node {
7049         zfs_handle_t    *un_zhp;
7050         char            *un_mountp;
7051         uu_avl_node_t   un_avlnode;
7052 } unshare_unmount_node_t;
7053
7054 /* ARGSUSED */
7055 static int
7056 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
7057 {
7058         const unshare_unmount_node_t *l = larg;
7059         const unshare_unmount_node_t *r = rarg;
7060
7061         return (strcmp(l->un_mountp, r->un_mountp));
7062 }
7063
7064 /*
7065  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
7066  * absolute path, find the entry /proc/self/mounts, verify that it's a
7067  * ZFS filesystem, and unmount it appropriately.
7068  */
7069 static int
7070 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
7071 {
7072         zfs_handle_t *zhp;
7073         int ret = 0;
7074         struct stat64 statbuf;
7075         struct extmnttab entry;
7076         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
7077         ino_t path_inode;
7078
7079         /*
7080          * Search for the given (major,minor) pair in the mount table.
7081          */
7082
7083         /* Reopen MNTTAB to prevent reading stale data from open file */
7084         if (freopen(MNTTAB, "r", mnttab_file) == NULL)
7085                 return (ENOENT);
7086
7087         if (getextmntent(path, &entry, &statbuf) != 0) {
7088                 if (op == OP_SHARE) {
7089                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
7090                             "currently mounted\n"), cmdname, path);
7091                         return (1);
7092                 }
7093                 (void) fprintf(stderr, gettext("warning: %s not in"
7094                     "/proc/self/mounts\n"), path);
7095                 if ((ret = umount2(path, flags)) != 0)
7096                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
7097                             strerror(errno));
7098                 return (ret != 0);
7099         }
7100         path_inode = statbuf.st_ino;
7101
7102         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
7103                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
7104                     "filesystem\n"), cmdname, path);
7105                 return (1);
7106         }
7107
7108         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
7109             ZFS_TYPE_FILESYSTEM)) == NULL)
7110                 return (1);
7111
7112         ret = 1;
7113         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
7114                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
7115                     cmdname, path, strerror(errno));
7116                 goto out;
7117         } else if (statbuf.st_ino != path_inode) {
7118                 (void) fprintf(stderr, gettext("cannot "
7119                     "%s '%s': not a mountpoint\n"), cmdname, path);
7120                 goto out;
7121         }
7122
7123         if (op == OP_SHARE) {
7124                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
7125                 char smbshare_prop[ZFS_MAXPROPLEN];
7126
7127                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
7128                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
7129                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
7130                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
7131
7132                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
7133                     strcmp(smbshare_prop, "off") == 0) {
7134                         (void) fprintf(stderr, gettext("cannot unshare "
7135                             "'%s': legacy share\n"), path);
7136                         (void) fprintf(stderr, gettext("use exportfs(8) "
7137                             "or smbcontrol(1) to unshare this filesystem\n"));
7138                 } else if (!zfs_is_shared(zhp)) {
7139                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
7140                             "not currently shared\n"), path);
7141                 } else {
7142                         ret = zfs_unshareall_bypath(zhp, path);
7143                         zfs_commit_all_shares();
7144                 }
7145         } else {
7146                 char mtpt_prop[ZFS_MAXPROPLEN];
7147
7148                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
7149                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
7150
7151                 if (is_manual) {
7152                         ret = zfs_unmount(zhp, NULL, flags);
7153                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
7154                         (void) fprintf(stderr, gettext("cannot unmount "
7155                             "'%s': legacy mountpoint\n"),
7156                             zfs_get_name(zhp));
7157                         (void) fprintf(stderr, gettext("use umount(8) "
7158                             "to unmount this filesystem\n"));
7159                 } else {
7160                         ret = zfs_unmountall(zhp, flags);
7161                 }
7162         }
7163
7164 out:
7165         zfs_close(zhp);
7166
7167         return (ret != 0);
7168 }
7169
7170 /*
7171  * Generic callback for unsharing or unmounting a filesystem.
7172  */
7173 static int
7174 unshare_unmount(int op, int argc, char **argv)
7175 {
7176         int do_all = 0;
7177         int flags = 0;
7178         int ret = 0;
7179         int c;
7180         zfs_handle_t *zhp;
7181         char nfs_mnt_prop[ZFS_MAXPROPLEN];
7182         char sharesmb[ZFS_MAXPROPLEN];
7183
7184         /* check options */
7185         while ((c = getopt(argc, argv, op == OP_SHARE ? ":a" : "afu")) != -1) {
7186                 switch (c) {
7187                 case 'a':
7188                         do_all = 1;
7189                         break;
7190                 case 'f':
7191                         flags |= MS_FORCE;
7192                         break;
7193                 case 'u':
7194                         flags |= MS_CRYPT;
7195                         break;
7196                 case ':':
7197                         (void) fprintf(stderr, gettext("missing argument for "
7198                             "'%c' option\n"), optopt);
7199                         usage(B_FALSE);
7200                         break;
7201                 case '?':
7202                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
7203                             optopt);
7204                         usage(B_FALSE);
7205                 }
7206         }
7207
7208         argc -= optind;
7209         argv += optind;
7210
7211         if (do_all) {
7212                 /*
7213                  * We could make use of zfs_for_each() to walk all datasets in
7214                  * the system, but this would be very inefficient, especially
7215                  * since we would have to linearly search /proc/self/mounts for
7216                  * each one. Instead, do one pass through /proc/self/mounts
7217                  * looking for zfs entries and call zfs_unmount() for each one.
7218                  *
7219                  * Things get a little tricky if the administrator has created
7220                  * mountpoints beneath other ZFS filesystems.  In this case, we
7221                  * have to unmount the deepest filesystems first.  To accomplish
7222                  * this, we place all the mountpoints in an AVL tree sorted by
7223                  * the special type (dataset name), and walk the result in
7224                  * reverse to make sure to get any snapshots first.
7225                  */
7226                 struct mnttab entry;
7227                 uu_avl_pool_t *pool;
7228                 uu_avl_t *tree = NULL;
7229                 unshare_unmount_node_t *node;
7230                 uu_avl_index_t idx;
7231                 uu_avl_walk_t *walk;
7232                 char *protocol = NULL;
7233
7234                 if (op == OP_SHARE && argc > 0) {
7235                         if (strcmp(argv[0], "nfs") != 0 &&
7236                             strcmp(argv[0], "smb") != 0) {
7237                                 (void) fprintf(stderr, gettext("share type "
7238                                     "must be 'nfs' or 'smb'\n"));
7239                                 usage(B_FALSE);
7240                         }
7241                         protocol = argv[0];
7242                         argc--;
7243                         argv++;
7244                 }
7245
7246                 if (argc != 0) {
7247                         (void) fprintf(stderr, gettext("too many arguments\n"));
7248                         usage(B_FALSE);
7249                 }
7250
7251                 if (((pool = uu_avl_pool_create("unmount_pool",
7252                     sizeof (unshare_unmount_node_t),
7253                     offsetof(unshare_unmount_node_t, un_avlnode),
7254                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
7255                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
7256                         nomem();
7257
7258                 /* Reopen MNTTAB to prevent reading stale data from open file */
7259                 if (freopen(MNTTAB, "r", mnttab_file) == NULL)
7260                         return (ENOENT);
7261
7262                 while (getmntent(mnttab_file, &entry) == 0) {
7263
7264                         /* ignore non-ZFS entries */
7265                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
7266                                 continue;
7267
7268                         /* ignore snapshots */
7269                         if (strchr(entry.mnt_special, '@') != NULL)
7270                                 continue;
7271
7272                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
7273                             ZFS_TYPE_FILESYSTEM)) == NULL) {
7274                                 ret = 1;
7275                                 continue;
7276                         }
7277
7278                         /*
7279                          * Ignore datasets that are excluded/restricted by
7280                          * parent pool name.
7281                          */
7282                         if (zpool_skip_pool(zfs_get_pool_name(zhp))) {
7283                                 zfs_close(zhp);
7284                                 continue;
7285                         }
7286
7287                         switch (op) {
7288                         case OP_SHARE:
7289                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
7290                                     nfs_mnt_prop,
7291                                     sizeof (nfs_mnt_prop),
7292                                     NULL, NULL, 0, B_FALSE) == 0);
7293                                 if (strcmp(nfs_mnt_prop, "off") != 0)
7294                                         break;
7295                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
7296                                     nfs_mnt_prop,
7297                                     sizeof (nfs_mnt_prop),
7298                                     NULL, NULL, 0, B_FALSE) == 0);
7299                                 if (strcmp(nfs_mnt_prop, "off") == 0)
7300                                         continue;
7301                                 break;
7302                         case OP_MOUNT:
7303                                 /* Ignore legacy mounts */
7304                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
7305                                     nfs_mnt_prop,
7306                                     sizeof (nfs_mnt_prop),
7307                                     NULL, NULL, 0, B_FALSE) == 0);
7308                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
7309                                         continue;
7310                                 /* Ignore canmount=noauto mounts */
7311                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
7312                                     ZFS_CANMOUNT_NOAUTO)
7313                                         continue;
7314                         default:
7315                                 break;
7316                         }
7317
7318                         node = safe_malloc(sizeof (unshare_unmount_node_t));
7319                         node->un_zhp = zhp;
7320                         node->un_mountp = safe_strdup(entry.mnt_mountp);
7321
7322                         uu_avl_node_init(node, &node->un_avlnode, pool);
7323
7324                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
7325                                 uu_avl_insert(tree, node, idx);
7326                         } else {
7327                                 zfs_close(node->un_zhp);
7328                                 free(node->un_mountp);
7329                                 free(node);
7330                         }
7331                 }
7332
7333                 /*
7334                  * Walk the AVL tree in reverse, unmounting each filesystem and
7335                  * removing it from the AVL tree in the process.
7336                  */
7337                 if ((walk = uu_avl_walk_start(tree,
7338                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
7339                         nomem();
7340
7341                 while ((node = uu_avl_walk_next(walk)) != NULL) {
7342                         const char *mntarg = NULL;
7343
7344                         uu_avl_remove(tree, node);
7345                         switch (op) {
7346                         case OP_SHARE:
7347                                 if (zfs_unshareall_bytype(node->un_zhp,
7348                                     node->un_mountp, protocol) != 0)
7349                                         ret = 1;
7350                                 break;
7351
7352                         case OP_MOUNT:
7353                                 if (zfs_unmount(node->un_zhp,
7354                                     mntarg, flags) != 0)
7355                                         ret = 1;
7356                                 break;
7357                         }
7358
7359                         zfs_close(node->un_zhp);
7360                         free(node->un_mountp);
7361                         free(node);
7362                 }
7363
7364                 if (op == OP_SHARE)
7365                         zfs_commit_shares(protocol);
7366
7367                 uu_avl_walk_end(walk);
7368                 uu_avl_destroy(tree);
7369                 uu_avl_pool_destroy(pool);
7370
7371         } else {
7372                 if (argc != 1) {
7373                         if (argc == 0)
7374                                 (void) fprintf(stderr,
7375                                     gettext("missing filesystem argument\n"));
7376                         else
7377                                 (void) fprintf(stderr,
7378                                     gettext("too many arguments\n"));
7379                         usage(B_FALSE);
7380                 }
7381
7382                 /*
7383                  * We have an argument, but it may be a full path or a ZFS
7384                  * filesystem.  Pass full paths off to unmount_path() (shared by
7385                  * manual_unmount), otherwise open the filesystem and pass to
7386                  * zfs_unmount().
7387                  */
7388                 if (argv[0][0] == '/')
7389                         return (unshare_unmount_path(op, argv[0],
7390                             flags, B_FALSE));
7391
7392                 if ((zhp = zfs_open(g_zfs, argv[0],
7393                     ZFS_TYPE_FILESYSTEM)) == NULL)
7394                         return (1);
7395
7396                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
7397                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
7398                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
7399                     NULL, 0, B_FALSE) == 0);
7400
7401                 switch (op) {
7402                 case OP_SHARE:
7403                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
7404                             nfs_mnt_prop,
7405                             sizeof (nfs_mnt_prop),
7406                             NULL, NULL, 0, B_FALSE) == 0);
7407                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
7408                             sharesmb, sizeof (sharesmb), NULL, NULL,
7409                             0, B_FALSE) == 0);
7410
7411                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
7412                             strcmp(sharesmb, "off") == 0) {
7413                                 (void) fprintf(stderr, gettext("cannot "
7414                                     "unshare '%s': legacy share\n"),
7415                                     zfs_get_name(zhp));
7416                                 (void) fprintf(stderr, gettext("use "
7417                                     "unshare(1M) to unshare this "
7418                                     "filesystem\n"));
7419                                 ret = 1;
7420                         } else if (!zfs_is_shared(zhp)) {
7421                                 (void) fprintf(stderr, gettext("cannot "
7422                                     "unshare '%s': not currently "
7423                                     "shared\n"), zfs_get_name(zhp));
7424                                 ret = 1;
7425                         } else if (zfs_unshareall(zhp) != 0) {
7426                                 ret = 1;
7427                         }
7428                         break;
7429
7430                 case OP_MOUNT:
7431                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
7432                                 (void) fprintf(stderr, gettext("cannot "
7433                                     "unmount '%s': legacy "
7434                                     "mountpoint\n"), zfs_get_name(zhp));
7435                                 (void) fprintf(stderr, gettext("use "
7436                                     "umount(1M) to unmount this "
7437                                     "filesystem\n"));
7438                                 ret = 1;
7439                         } else if (!zfs_is_mounted(zhp, NULL)) {
7440                                 (void) fprintf(stderr, gettext("cannot "
7441                                     "unmount '%s': not currently "
7442                                     "mounted\n"),
7443                                     zfs_get_name(zhp));
7444                                 ret = 1;
7445                         } else if (zfs_unmountall(zhp, flags) != 0) {
7446                                 ret = 1;
7447                         }
7448                         break;
7449                 }
7450
7451                 zfs_close(zhp);
7452         }
7453
7454         return (ret);
7455 }
7456
7457 /*
7458  * zfs unmount [-fu] -a
7459  * zfs unmount [-fu] filesystem
7460  *
7461  * Unmount all filesystems, or a specific ZFS filesystem.
7462  */
7463 static int
7464 zfs_do_unmount(int argc, char **argv)
7465 {
7466         return (unshare_unmount(OP_MOUNT, argc, argv));
7467 }
7468
7469 /*
7470  * zfs unshare -a
7471  * zfs unshare filesystem
7472  *
7473  * Unshare all filesystems, or a specific ZFS filesystem.
7474  */
7475 static int
7476 zfs_do_unshare(int argc, char **argv)
7477 {
7478         return (unshare_unmount(OP_SHARE, argc, argv));
7479 }
7480
7481 static int
7482 find_command_idx(char *command, int *idx)
7483 {
7484         int i;
7485
7486         for (i = 0; i < NCOMMAND; i++) {
7487                 if (command_table[i].name == NULL)
7488                         continue;
7489
7490                 if (strcmp(command, command_table[i].name) == 0) {
7491                         *idx = i;
7492                         return (0);
7493                 }
7494         }
7495         return (1);
7496 }
7497
7498 static int
7499 zfs_do_diff(int argc, char **argv)
7500 {
7501         zfs_handle_t *zhp;
7502         int flags = 0;
7503         char *tosnap = NULL;
7504         char *fromsnap = NULL;
7505         char *atp, *copy;
7506         int err = 0;
7507         int c;
7508         struct sigaction sa;
7509
7510         while ((c = getopt(argc, argv, "FHt")) != -1) {
7511                 switch (c) {
7512                 case 'F':
7513                         flags |= ZFS_DIFF_CLASSIFY;
7514                         break;
7515                 case 'H':
7516                         flags |= ZFS_DIFF_PARSEABLE;
7517                         break;
7518                 case 't':
7519                         flags |= ZFS_DIFF_TIMESTAMP;
7520                         break;
7521                 default:
7522                         (void) fprintf(stderr,
7523                             gettext("invalid option '%c'\n"), optopt);
7524                         usage(B_FALSE);
7525                 }
7526         }
7527
7528         argc -= optind;
7529         argv += optind;
7530
7531         if (argc < 1) {
7532                 (void) fprintf(stderr,
7533                     gettext("must provide at least one snapshot name\n"));
7534                 usage(B_FALSE);
7535         }
7536
7537         if (argc > 2) {
7538                 (void) fprintf(stderr, gettext("too many arguments\n"));
7539                 usage(B_FALSE);
7540         }
7541
7542         fromsnap = argv[0];
7543         tosnap = (argc == 2) ? argv[1] : NULL;
7544
7545         copy = NULL;
7546         if (*fromsnap != '@')
7547                 copy = strdup(fromsnap);
7548         else if (tosnap)
7549                 copy = strdup(tosnap);
7550         if (copy == NULL)
7551                 usage(B_FALSE);
7552
7553         if ((atp = strchr(copy, '@')) != NULL)
7554                 *atp = '\0';
7555
7556         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL) {
7557                 free(copy);
7558                 return (1);
7559         }
7560         free(copy);
7561
7562         /*
7563          * Ignore SIGPIPE so that the library can give us
7564          * information on any failure
7565          */
7566         if (sigemptyset(&sa.sa_mask) == -1) {
7567                 err = errno;
7568                 goto out;
7569         }
7570         sa.sa_flags = 0;
7571         sa.sa_handler = SIG_IGN;
7572         if (sigaction(SIGPIPE, &sa, NULL) == -1) {
7573                 err = errno;
7574                 goto out;
7575         }
7576
7577         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
7578 out:
7579         zfs_close(zhp);
7580
7581         return (err != 0);
7582 }
7583
7584 /*
7585  * zfs bookmark <fs@source>|<fs#source> <fs#bookmark>
7586  *
7587  * Creates a bookmark with the given name from the source snapshot
7588  * or creates a copy of an existing source bookmark.
7589  */
7590 static int
7591 zfs_do_bookmark(int argc, char **argv)
7592 {
7593         char *source, *bookname;
7594         char expbuf[ZFS_MAX_DATASET_NAME_LEN];
7595         int source_type;
7596         nvlist_t *nvl;
7597         int ret = 0;
7598         int c;
7599
7600         /* check options */
7601         while ((c = getopt(argc, argv, "")) != -1) {
7602                 switch (c) {
7603                 case '?':
7604                         (void) fprintf(stderr,
7605                             gettext("invalid option '%c'\n"), optopt);
7606                         goto usage;
7607                 }
7608         }
7609
7610         argc -= optind;
7611         argv += optind;
7612
7613         /* check number of arguments */
7614         if (argc < 1) {
7615                 (void) fprintf(stderr, gettext("missing source argument\n"));
7616                 goto usage;
7617         }
7618         if (argc < 2) {
7619                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
7620                 goto usage;
7621         }
7622
7623         source = argv[0];
7624         bookname = argv[1];
7625
7626         if (strchr(source, '@') == NULL && strchr(source, '#') == NULL) {
7627                 (void) fprintf(stderr,
7628                     gettext("invalid source name '%s': "
7629                     "must contain a '@' or '#'\n"), source);
7630                 goto usage;
7631         }
7632         if (strchr(bookname, '#') == NULL) {
7633                 (void) fprintf(stderr,
7634                     gettext("invalid bookmark name '%s': "
7635                     "must contain a '#'\n"), bookname);
7636                 goto usage;
7637         }
7638
7639         /*
7640          * expand source or bookname to full path:
7641          * one of them may be specified as short name
7642          */
7643         {
7644                 char **expand;
7645                 char *source_short, *bookname_short;
7646                 source_short = strpbrk(source, "@#");
7647                 bookname_short = strpbrk(bookname, "#");
7648                 if (source_short == source &&
7649                     bookname_short == bookname) {
7650                         (void) fprintf(stderr, gettext(
7651                             "either source or bookmark must be specified as "
7652                             "full dataset paths"));
7653                         goto usage;
7654                 } else if (source_short != source &&
7655                     bookname_short != bookname) {
7656                         expand = NULL;
7657                 } else if (source_short != source) {
7658                         strlcpy(expbuf, source, sizeof (expbuf));
7659                         expand = &bookname;
7660                 } else if (bookname_short != bookname) {
7661                         strlcpy(expbuf, bookname, sizeof (expbuf));
7662                         expand = &source;
7663                 } else {
7664                         abort();
7665                 }
7666                 if (expand != NULL) {
7667                         *strpbrk(expbuf, "@#") = '\0'; /* dataset name in buf */
7668                         (void) strlcat(expbuf, *expand, sizeof (expbuf));
7669                         *expand = expbuf;
7670                 }
7671         }
7672
7673         /* determine source type */
7674         switch (*strpbrk(source, "@#")) {
7675                 case '@': source_type = ZFS_TYPE_SNAPSHOT; break;
7676                 case '#': source_type = ZFS_TYPE_BOOKMARK; break;
7677                 default: abort();
7678         }
7679
7680         /* test the source exists */
7681         zfs_handle_t *zhp;
7682         zhp = zfs_open(g_zfs, source, source_type);
7683         if (zhp == NULL)
7684                 goto usage;
7685         zfs_close(zhp);
7686
7687         nvl = fnvlist_alloc();
7688         fnvlist_add_string(nvl, bookname, source);
7689         ret = lzc_bookmark(nvl, NULL);
7690         fnvlist_free(nvl);
7691
7692         if (ret != 0) {
7693                 const char *err_msg = NULL;
7694                 char errbuf[1024];
7695
7696                 (void) snprintf(errbuf, sizeof (errbuf),
7697                     dgettext(TEXT_DOMAIN,
7698                     "cannot create bookmark '%s'"), bookname);
7699
7700                 switch (ret) {
7701                 case EXDEV:
7702                         err_msg = "bookmark is in a different pool";
7703                         break;
7704                 case ZFS_ERR_BOOKMARK_SOURCE_NOT_ANCESTOR:
7705                         err_msg = "source is not an ancestor of the "
7706                             "new bookmark's dataset";
7707                         break;
7708                 case EEXIST:
7709                         err_msg = "bookmark exists";
7710                         break;
7711                 case EINVAL:
7712                         err_msg = "invalid argument";
7713                         break;
7714                 case ENOTSUP:
7715                         err_msg = "bookmark feature not enabled";
7716                         break;
7717                 case ENOSPC:
7718                         err_msg = "out of space";
7719                         break;
7720                 case ENOENT:
7721                         err_msg = "dataset does not exist";
7722                         break;
7723                 default:
7724                         (void) zfs_standard_error(g_zfs, ret, errbuf);
7725                         break;
7726                 }
7727                 if (err_msg != NULL) {
7728                         (void) fprintf(stderr, "%s: %s\n", errbuf,
7729                             dgettext(TEXT_DOMAIN, err_msg));
7730                 }
7731         }
7732
7733         return (ret != 0);
7734
7735 usage:
7736         usage(B_FALSE);
7737         return (-1);
7738 }
7739
7740 static int
7741 zfs_do_channel_program(int argc, char **argv)
7742 {
7743         int ret, fd, c;
7744         char *progbuf, *filename, *poolname;
7745         size_t progsize, progread;
7746         nvlist_t *outnvl = NULL;
7747         uint64_t instrlimit = ZCP_DEFAULT_INSTRLIMIT;
7748         uint64_t memlimit = ZCP_DEFAULT_MEMLIMIT;
7749         boolean_t sync_flag = B_TRUE, json_output = B_FALSE;
7750         zpool_handle_t *zhp;
7751
7752         /* check options */
7753         while ((c = getopt(argc, argv, "nt:m:j")) != -1) {
7754                 switch (c) {
7755                 case 't':
7756                 case 'm': {
7757                         uint64_t arg;
7758                         char *endp;
7759
7760                         errno = 0;
7761                         arg = strtoull(optarg, &endp, 0);
7762                         if (errno != 0 || *endp != '\0') {
7763                                 (void) fprintf(stderr, gettext(
7764                                     "invalid argument "
7765                                     "'%s': expected integer\n"), optarg);
7766                                 goto usage;
7767                         }
7768
7769                         if (c == 't') {
7770                                 instrlimit = arg;
7771                         } else {
7772                                 ASSERT3U(c, ==, 'm');
7773                                 memlimit = arg;
7774                         }
7775                         break;
7776                 }
7777                 case 'n': {
7778                         sync_flag = B_FALSE;
7779                         break;
7780                 }
7781                 case 'j': {
7782                         json_output = B_TRUE;
7783                         break;
7784                 }
7785                 case '?':
7786                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
7787                             optopt);
7788                         goto usage;
7789                 }
7790         }
7791
7792         argc -= optind;
7793         argv += optind;
7794
7795         if (argc < 2) {
7796                 (void) fprintf(stderr,
7797                     gettext("invalid number of arguments\n"));
7798                 goto usage;
7799         }
7800
7801         poolname = argv[0];
7802         filename = argv[1];
7803         if (strcmp(filename, "-") == 0) {
7804                 fd = 0;
7805                 filename = "standard input";
7806         } else if ((fd = open(filename, O_RDONLY)) < 0) {
7807                 (void) fprintf(stderr, gettext("cannot open '%s': %s\n"),
7808                     filename, strerror(errno));
7809                 return (1);
7810         }
7811
7812         if ((zhp = zpool_open(g_zfs, poolname)) == NULL) {
7813                 (void) fprintf(stderr, gettext("cannot open pool '%s'\n"),
7814                     poolname);
7815                 if (fd != 0)
7816                         (void) close(fd);
7817                 return (1);
7818         }
7819         zpool_close(zhp);
7820
7821         /*
7822          * Read in the channel program, expanding the program buffer as
7823          * necessary.
7824          */
7825         progread = 0;
7826         progsize = 1024;
7827         progbuf = safe_malloc(progsize);
7828         do {
7829                 ret = read(fd, progbuf + progread, progsize - progread);
7830                 progread += ret;
7831                 if (progread == progsize && ret > 0) {
7832                         progsize *= 2;
7833                         progbuf = safe_realloc(progbuf, progsize);
7834                 }
7835         } while (ret > 0);
7836
7837         if (fd != 0)
7838                 (void) close(fd);
7839         if (ret < 0) {
7840                 free(progbuf);
7841                 (void) fprintf(stderr,
7842                     gettext("cannot read '%s': %s\n"),
7843                     filename, strerror(errno));
7844                 return (1);
7845         }
7846         progbuf[progread] = '\0';
7847
7848         /*
7849          * Any remaining arguments are passed as arguments to the lua script as
7850          * a string array:
7851          * {
7852          *      "argv" -> [ "arg 1", ... "arg n" ],
7853          * }
7854          */
7855         nvlist_t *argnvl = fnvlist_alloc();
7856         fnvlist_add_string_array(argnvl, ZCP_ARG_CLIARGV, argv + 2, argc - 2);
7857
7858         if (sync_flag) {
7859                 ret = lzc_channel_program(poolname, progbuf,
7860                     instrlimit, memlimit, argnvl, &outnvl);
7861         } else {
7862                 ret = lzc_channel_program_nosync(poolname, progbuf,
7863                     instrlimit, memlimit, argnvl, &outnvl);
7864         }
7865
7866         if (ret != 0) {
7867                 /*
7868                  * On error, report the error message handed back by lua if one
7869                  * exists.  Otherwise, generate an appropriate error message,
7870                  * falling back on strerror() for an unexpected return code.
7871                  */
7872                 char *errstring = NULL;
7873                 const char *msg = gettext("Channel program execution failed");
7874                 uint64_t instructions = 0;
7875                 if (outnvl != NULL && nvlist_exists(outnvl, ZCP_RET_ERROR)) {
7876                         (void) nvlist_lookup_string(outnvl,
7877                             ZCP_RET_ERROR, &errstring);
7878                         if (errstring == NULL)
7879                                 errstring = strerror(ret);
7880                         if (ret == ETIME) {
7881                                 (void) nvlist_lookup_uint64(outnvl,
7882                                     ZCP_ARG_INSTRLIMIT, &instructions);
7883                         }
7884                 } else {
7885                         switch (ret) {
7886                         case EINVAL:
7887                                 errstring =
7888                                     "Invalid instruction or memory limit.";
7889                                 break;
7890                         case ENOMEM:
7891                                 errstring = "Return value too large.";
7892                                 break;
7893                         case ENOSPC:
7894                                 errstring = "Memory limit exhausted.";
7895                                 break;
7896                         case ETIME:
7897                                 errstring = "Timed out.";
7898                                 break;
7899                         case EPERM:
7900                                 errstring = "Permission denied. Channel "
7901                                     "programs must be run as root.";
7902                                 break;
7903                         default:
7904                                 (void) zfs_standard_error(g_zfs, ret, msg);
7905                         }
7906                 }
7907                 if (errstring != NULL)
7908                         (void) fprintf(stderr, "%s:\n%s\n", msg, errstring);
7909
7910                 if (ret == ETIME && instructions != 0)
7911                         (void) fprintf(stderr,
7912                             gettext("%llu Lua instructions\n"),
7913                             (u_longlong_t)instructions);
7914         } else {
7915                 if (json_output) {
7916                         (void) nvlist_print_json(stdout, outnvl);
7917                 } else if (nvlist_empty(outnvl)) {
7918                         (void) fprintf(stdout, gettext("Channel program fully "
7919                             "executed and did not produce output.\n"));
7920                 } else {
7921                         (void) fprintf(stdout, gettext("Channel program fully "
7922                             "executed and produced output:\n"));
7923                         dump_nvlist(outnvl, 4);
7924                 }
7925         }
7926
7927         free(progbuf);
7928         fnvlist_free(outnvl);
7929         fnvlist_free(argnvl);
7930         return (ret != 0);
7931
7932 usage:
7933         usage(B_FALSE);
7934         return (-1);
7935 }
7936
7937
7938 typedef struct loadkey_cbdata {
7939         boolean_t cb_loadkey;
7940         boolean_t cb_recursive;
7941         boolean_t cb_noop;
7942         char *cb_keylocation;
7943         uint64_t cb_numfailed;
7944         uint64_t cb_numattempted;
7945 } loadkey_cbdata_t;
7946
7947 static int
7948 load_key_callback(zfs_handle_t *zhp, void *data)
7949 {
7950         int ret;
7951         boolean_t is_encroot;
7952         loadkey_cbdata_t *cb = data;
7953         uint64_t keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
7954
7955         /*
7956          * If we are working recursively, we want to skip loading / unloading
7957          * keys for non-encryption roots and datasets whose keys are already
7958          * in the desired end-state.
7959          */
7960         if (cb->cb_recursive) {
7961                 ret = zfs_crypto_get_encryption_root(zhp, &is_encroot, NULL);
7962                 if (ret != 0)
7963                         return (ret);
7964                 if (!is_encroot)
7965                         return (0);
7966
7967                 if ((cb->cb_loadkey && keystatus == ZFS_KEYSTATUS_AVAILABLE) ||
7968                     (!cb->cb_loadkey && keystatus == ZFS_KEYSTATUS_UNAVAILABLE))
7969                         return (0);
7970         }
7971
7972         cb->cb_numattempted++;
7973
7974         if (cb->cb_loadkey)
7975                 ret = zfs_crypto_load_key(zhp, cb->cb_noop, cb->cb_keylocation);
7976         else
7977                 ret = zfs_crypto_unload_key(zhp);
7978
7979         if (ret != 0) {
7980                 cb->cb_numfailed++;
7981                 return (ret);
7982         }
7983
7984         return (0);
7985 }
7986
7987 static int
7988 load_unload_keys(int argc, char **argv, boolean_t loadkey)
7989 {
7990         int c, ret = 0, flags = 0;
7991         boolean_t do_all = B_FALSE;
7992         loadkey_cbdata_t cb = { 0 };
7993
7994         cb.cb_loadkey = loadkey;
7995
7996         while ((c = getopt(argc, argv, "anrL:")) != -1) {
7997                 /* noop and alternate keylocations only apply to zfs load-key */
7998                 if (loadkey) {
7999                         switch (c) {
8000                         case 'n':
8001                                 cb.cb_noop = B_TRUE;
8002                                 continue;
8003                         case 'L':
8004                                 cb.cb_keylocation = optarg;
8005                                 continue;
8006                         default:
8007                                 break;
8008                         }
8009                 }
8010
8011                 switch (c) {
8012                 case 'a':
8013                         do_all = B_TRUE;
8014                         cb.cb_recursive = B_TRUE;
8015                         break;
8016                 case 'r':
8017                         flags |= ZFS_ITER_RECURSE;
8018                         cb.cb_recursive = B_TRUE;
8019                         break;
8020                 default:
8021                         (void) fprintf(stderr,
8022                             gettext("invalid option '%c'\n"), optopt);
8023                         usage(B_FALSE);
8024                 }
8025         }
8026
8027         argc -= optind;
8028         argv += optind;
8029
8030         if (!do_all && argc == 0) {
8031                 (void) fprintf(stderr,
8032                     gettext("Missing dataset argument or -a option\n"));
8033                 usage(B_FALSE);
8034         }
8035
8036         if (do_all && argc != 0) {
8037                 (void) fprintf(stderr,
8038                     gettext("Cannot specify dataset with -a option\n"));
8039                 usage(B_FALSE);
8040         }
8041
8042         if (cb.cb_recursive && cb.cb_keylocation != NULL &&
8043             strcmp(cb.cb_keylocation, "prompt") != 0) {
8044                 (void) fprintf(stderr, gettext("alternate keylocation may only "
8045                     "be 'prompt' with -r or -a\n"));
8046                 usage(B_FALSE);
8047         }
8048
8049         ret = zfs_for_each(argc, argv, flags,
8050             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, NULL, NULL, 0,
8051             load_key_callback, &cb);
8052
8053         if (cb.cb_noop || (cb.cb_recursive && cb.cb_numattempted != 0)) {
8054                 (void) printf(gettext("%llu / %llu key(s) successfully %s\n"),
8055                     (u_longlong_t)(cb.cb_numattempted - cb.cb_numfailed),
8056                     (u_longlong_t)cb.cb_numattempted,
8057                     loadkey ? (cb.cb_noop ? "verified" : "loaded") :
8058                     "unloaded");
8059         }
8060
8061         if (cb.cb_numfailed != 0)
8062                 ret = -1;
8063
8064         return (ret);
8065 }
8066
8067 static int
8068 zfs_do_load_key(int argc, char **argv)
8069 {
8070         return (load_unload_keys(argc, argv, B_TRUE));
8071 }
8072
8073
8074 static int
8075 zfs_do_unload_key(int argc, char **argv)
8076 {
8077         return (load_unload_keys(argc, argv, B_FALSE));
8078 }
8079
8080 static int
8081 zfs_do_change_key(int argc, char **argv)
8082 {
8083         int c, ret;
8084         uint64_t keystatus;
8085         boolean_t loadkey = B_FALSE, inheritkey = B_FALSE;
8086         zfs_handle_t *zhp = NULL;
8087         nvlist_t *props = fnvlist_alloc();
8088
8089         while ((c = getopt(argc, argv, "lio:")) != -1) {
8090                 switch (c) {
8091                 case 'l':
8092                         loadkey = B_TRUE;
8093                         break;
8094                 case 'i':
8095                         inheritkey = B_TRUE;
8096                         break;
8097                 case 'o':
8098                         if (!parseprop(props, optarg)) {
8099                                 nvlist_free(props);
8100                                 return (1);
8101                         }
8102                         break;
8103                 default:
8104                         (void) fprintf(stderr,
8105                             gettext("invalid option '%c'\n"), optopt);
8106                         usage(B_FALSE);
8107                 }
8108         }
8109
8110         if (inheritkey && !nvlist_empty(props)) {
8111                 (void) fprintf(stderr,
8112                     gettext("Properties not allowed for inheriting\n"));
8113                 usage(B_FALSE);
8114         }
8115
8116         argc -= optind;
8117         argv += optind;
8118
8119         if (argc < 1) {
8120                 (void) fprintf(stderr, gettext("Missing dataset argument\n"));
8121                 usage(B_FALSE);
8122         }
8123
8124         if (argc > 1) {
8125                 (void) fprintf(stderr, gettext("Too many arguments\n"));
8126                 usage(B_FALSE);
8127         }
8128
8129         zhp = zfs_open(g_zfs, argv[argc - 1],
8130             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
8131         if (zhp == NULL)
8132                 usage(B_FALSE);
8133
8134         if (loadkey) {
8135                 keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
8136                 if (keystatus != ZFS_KEYSTATUS_AVAILABLE) {
8137                         ret = zfs_crypto_load_key(zhp, B_FALSE, NULL);
8138                         if (ret != 0) {
8139                                 nvlist_free(props);
8140                                 zfs_close(zhp);
8141                                 return (-1);
8142                         }
8143                 }
8144
8145                 /* refresh the properties so the new keystatus is visible */
8146                 zfs_refresh_properties(zhp);
8147         }
8148
8149         ret = zfs_crypto_rewrap(zhp, props, inheritkey);
8150         if (ret != 0) {
8151                 nvlist_free(props);
8152                 zfs_close(zhp);
8153                 return (-1);
8154         }
8155
8156         nvlist_free(props);
8157         zfs_close(zhp);
8158         return (0);
8159 }
8160
8161 /*
8162  * 1) zfs project [-d|-r] <file|directory ...>
8163  *    List project ID and inherit flag of file(s) or directories.
8164  *    -d: List the directory itself, not its children.
8165  *    -r: List subdirectories recursively.
8166  *
8167  * 2) zfs project -C [-k] [-r] <file|directory ...>
8168  *    Clear project inherit flag and/or ID on the file(s) or directories.
8169  *    -k: Keep the project ID unchanged. If not specified, the project ID
8170  *        will be reset as zero.
8171  *    -r: Clear on subdirectories recursively.
8172  *
8173  * 3) zfs project -c [-0] [-d|-r] [-p id] <file|directory ...>
8174  *    Check project ID and inherit flag on the file(s) or directories,
8175  *    report the outliers.
8176  *    -0: Print file name followed by a NUL instead of newline.
8177  *    -d: Check the directory itself, not its children.
8178  *    -p: Specify the referenced ID for comparing with the target file(s)
8179  *        or directories' project IDs. If not specified, the target (top)
8180  *        directory's project ID will be used as the referenced one.
8181  *    -r: Check subdirectories recursively.
8182  *
8183  * 4) zfs project [-p id] [-r] [-s] <file|directory ...>
8184  *    Set project ID and/or inherit flag on the file(s) or directories.
8185  *    -p: Set the project ID as the given id.
8186  *    -r: Set on subdirectories recursively. If not specify "-p" option,
8187  *        it will use top-level directory's project ID as the given id,
8188  *        then set both project ID and inherit flag on all descendants
8189  *        of the top-level directory.
8190  *    -s: Set project inherit flag.
8191  */
8192 static int
8193 zfs_do_project(int argc, char **argv)
8194 {
8195         zfs_project_control_t zpc = {
8196                 .zpc_expected_projid = ZFS_INVALID_PROJID,
8197                 .zpc_op = ZFS_PROJECT_OP_DEFAULT,
8198                 .zpc_dironly = B_FALSE,
8199                 .zpc_keep_projid = B_FALSE,
8200                 .zpc_newline = B_TRUE,
8201                 .zpc_recursive = B_FALSE,
8202                 .zpc_set_flag = B_FALSE,
8203         };
8204         int ret = 0, c;
8205
8206         if (argc < 2)
8207                 usage(B_FALSE);
8208
8209         while ((c = getopt(argc, argv, "0Ccdkp:rs")) != -1) {
8210                 switch (c) {
8211                 case '0':
8212                         zpc.zpc_newline = B_FALSE;
8213                         break;
8214                 case 'C':
8215                         if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
8216                                 (void) fprintf(stderr, gettext("cannot "
8217                                     "specify '-C' '-c' '-s' together\n"));
8218                                 usage(B_FALSE);
8219                         }
8220
8221                         zpc.zpc_op = ZFS_PROJECT_OP_CLEAR;
8222                         break;
8223                 case 'c':
8224                         if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
8225                                 (void) fprintf(stderr, gettext("cannot "
8226                                     "specify '-C' '-c' '-s' together\n"));
8227                                 usage(B_FALSE);
8228                         }
8229
8230                         zpc.zpc_op = ZFS_PROJECT_OP_CHECK;
8231                         break;
8232                 case 'd':
8233                         zpc.zpc_dironly = B_TRUE;
8234                         /* overwrite "-r" option */
8235                         zpc.zpc_recursive = B_FALSE;
8236                         break;
8237                 case 'k':
8238                         zpc.zpc_keep_projid = B_TRUE;
8239                         break;
8240                 case 'p': {
8241                         char *endptr;
8242
8243                         errno = 0;
8244                         zpc.zpc_expected_projid = strtoull(optarg, &endptr, 0);
8245                         if (errno != 0 || *endptr != '\0') {
8246                                 (void) fprintf(stderr,
8247                                     gettext("project ID must be less than "
8248                                     "%u\n"), UINT32_MAX);
8249                                 usage(B_FALSE);
8250                         }
8251                         if (zpc.zpc_expected_projid >= UINT32_MAX) {
8252                                 (void) fprintf(stderr,
8253                                     gettext("invalid project ID\n"));
8254                                 usage(B_FALSE);
8255                         }
8256                         break;
8257                 }
8258                 case 'r':
8259                         zpc.zpc_recursive = B_TRUE;
8260                         /* overwrite "-d" option */
8261                         zpc.zpc_dironly = B_FALSE;
8262                         break;
8263                 case 's':
8264                         if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
8265                                 (void) fprintf(stderr, gettext("cannot "
8266                                     "specify '-C' '-c' '-s' together\n"));
8267                                 usage(B_FALSE);
8268                         }
8269
8270                         zpc.zpc_set_flag = B_TRUE;
8271                         zpc.zpc_op = ZFS_PROJECT_OP_SET;
8272                         break;
8273                 default:
8274                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
8275                             optopt);
8276                         usage(B_FALSE);
8277                 }
8278         }
8279
8280         if (zpc.zpc_op == ZFS_PROJECT_OP_DEFAULT) {
8281                 if (zpc.zpc_expected_projid != ZFS_INVALID_PROJID)
8282                         zpc.zpc_op = ZFS_PROJECT_OP_SET;
8283                 else
8284                         zpc.zpc_op = ZFS_PROJECT_OP_LIST;
8285         }
8286
8287         switch (zpc.zpc_op) {
8288         case ZFS_PROJECT_OP_LIST:
8289                 if (zpc.zpc_keep_projid) {
8290                         (void) fprintf(stderr,
8291                             gettext("'-k' is only valid together with '-C'\n"));
8292                         usage(B_FALSE);
8293                 }
8294                 if (!zpc.zpc_newline) {
8295                         (void) fprintf(stderr,
8296                             gettext("'-0' is only valid together with '-c'\n"));
8297                         usage(B_FALSE);
8298                 }
8299                 break;
8300         case ZFS_PROJECT_OP_CHECK:
8301                 if (zpc.zpc_keep_projid) {
8302                         (void) fprintf(stderr,
8303                             gettext("'-k' is only valid together with '-C'\n"));
8304                         usage(B_FALSE);
8305                 }
8306                 break;
8307         case ZFS_PROJECT_OP_CLEAR:
8308                 if (zpc.zpc_dironly) {
8309                         (void) fprintf(stderr,
8310                             gettext("'-d' is useless together with '-C'\n"));
8311                         usage(B_FALSE);
8312                 }
8313                 if (!zpc.zpc_newline) {
8314                         (void) fprintf(stderr,
8315                             gettext("'-0' is only valid together with '-c'\n"));
8316                         usage(B_FALSE);
8317                 }
8318                 if (zpc.zpc_expected_projid != ZFS_INVALID_PROJID) {
8319                         (void) fprintf(stderr,
8320                             gettext("'-p' is useless together with '-C'\n"));
8321                         usage(B_FALSE);
8322                 }
8323                 break;
8324         case ZFS_PROJECT_OP_SET:
8325                 if (zpc.zpc_dironly) {
8326                         (void) fprintf(stderr,
8327                             gettext("'-d' is useless for set project ID and/or "
8328                             "inherit flag\n"));
8329                         usage(B_FALSE);
8330                 }
8331                 if (zpc.zpc_keep_projid) {
8332                         (void) fprintf(stderr,
8333                             gettext("'-k' is only valid together with '-C'\n"));
8334                         usage(B_FALSE);
8335                 }
8336                 if (!zpc.zpc_newline) {
8337                         (void) fprintf(stderr,
8338                             gettext("'-0' is only valid together with '-c'\n"));
8339                         usage(B_FALSE);
8340                 }
8341                 break;
8342         default:
8343                 ASSERT(0);
8344                 break;
8345         }
8346
8347         argv += optind;
8348         argc -= optind;
8349         if (argc == 0) {
8350                 (void) fprintf(stderr,
8351                     gettext("missing file or directory target(s)\n"));
8352                 usage(B_FALSE);
8353         }
8354
8355         for (int i = 0; i < argc; i++) {
8356                 int err;
8357
8358                 err = zfs_project_handle(argv[i], &zpc);
8359                 if (err && !ret)
8360                         ret = err;
8361         }
8362
8363         return (ret);
8364 }
8365
8366 static int
8367 zfs_do_wait(int argc, char **argv)
8368 {
8369         boolean_t enabled[ZFS_WAIT_NUM_ACTIVITIES];
8370         int error, i;
8371         char c;
8372
8373         /* By default, wait for all types of activity. */
8374         for (i = 0; i < ZFS_WAIT_NUM_ACTIVITIES; i++)
8375                 enabled[i] = B_TRUE;
8376
8377         while ((c = getopt(argc, argv, "t:")) != -1) {
8378                 switch (c) {
8379                 case 't':
8380                 {
8381                         static char *col_subopts[] = { "deleteq", NULL };
8382                         char *value;
8383
8384                         /* Reset activities array */
8385                         bzero(&enabled, sizeof (enabled));
8386                         while (*optarg != '\0') {
8387                                 int activity = getsubopt(&optarg, col_subopts,
8388                                     &value);
8389
8390                                 if (activity < 0) {
8391                                         (void) fprintf(stderr,
8392                                             gettext("invalid activity '%s'\n"),
8393                                             value);
8394                                         usage(B_FALSE);
8395                                 }
8396
8397                                 enabled[activity] = B_TRUE;
8398                         }
8399                         break;
8400                 }
8401                 case '?':
8402                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
8403                             optopt);
8404                         usage(B_FALSE);
8405                 }
8406         }
8407
8408         argv += optind;
8409         argc -= optind;
8410         if (argc < 1) {
8411                 (void) fprintf(stderr, gettext("missing 'filesystem' "
8412                     "argument\n"));
8413                 usage(B_FALSE);
8414         }
8415         if (argc > 1) {
8416                 (void) fprintf(stderr, gettext("too many arguments\n"));
8417                 usage(B_FALSE);
8418         }
8419
8420         zfs_handle_t *zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM);
8421         if (zhp == NULL)
8422                 return (1);
8423
8424         for (;;) {
8425                 boolean_t missing = B_FALSE;
8426                 boolean_t any_waited = B_FALSE;
8427
8428                 for (int i = 0; i < ZFS_WAIT_NUM_ACTIVITIES; i++) {
8429                         boolean_t waited;
8430
8431                         if (!enabled[i])
8432                                 continue;
8433
8434                         error = zfs_wait_status(zhp, i, &missing, &waited);
8435                         if (error != 0 || missing)
8436                                 break;
8437
8438                         any_waited = (any_waited || waited);
8439                 }
8440
8441                 if (error != 0 || missing || !any_waited)
8442                         break;
8443         }
8444
8445         zfs_close(zhp);
8446
8447         return (error);
8448 }
8449
8450 /*
8451  * Display version message
8452  */
8453 static int
8454 zfs_do_version(int argc, char **argv)
8455 {
8456         if (zfs_version_print() == -1)
8457                 return (1);
8458
8459         return (0);
8460 }
8461
8462 int
8463 main(int argc, char **argv)
8464 {
8465         int ret = 0;
8466         int i = 0;
8467         char *cmdname;
8468         char **newargv;
8469
8470         (void) setlocale(LC_ALL, "");
8471         (void) textdomain(TEXT_DOMAIN);
8472
8473         opterr = 0;
8474
8475         /*
8476          * Make sure the user has specified some command.
8477          */
8478         if (argc < 2) {
8479                 (void) fprintf(stderr, gettext("missing command\n"));
8480                 usage(B_FALSE);
8481         }
8482
8483         cmdname = argv[1];
8484
8485         /*
8486          * The 'umount' command is an alias for 'unmount'
8487          */
8488         if (strcmp(cmdname, "umount") == 0)
8489                 cmdname = "unmount";
8490
8491         /*
8492          * The 'recv' command is an alias for 'receive'
8493          */
8494         if (strcmp(cmdname, "recv") == 0)
8495                 cmdname = "receive";
8496
8497         /*
8498          * The 'snap' command is an alias for 'snapshot'
8499          */
8500         if (strcmp(cmdname, "snap") == 0)
8501                 cmdname = "snapshot";
8502
8503         /*
8504          * Special case '-?'
8505          */
8506         if ((strcmp(cmdname, "-?") == 0) ||
8507             (strcmp(cmdname, "--help") == 0))
8508                 usage(B_TRUE);
8509
8510         /*
8511          * Special case '-V|--version'
8512          */
8513         if ((strcmp(cmdname, "-V") == 0) || (strcmp(cmdname, "--version") == 0))
8514                 return (zfs_do_version(argc, argv));
8515
8516         if ((g_zfs = libzfs_init()) == NULL) {
8517                 (void) fprintf(stderr, "%s\n", libzfs_error_init(errno));
8518                 return (1);
8519         }
8520
8521         mnttab_file = g_zfs->libzfs_mnttab;
8522
8523         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
8524
8525         libzfs_print_on_error(g_zfs, B_TRUE);
8526
8527         /*
8528          * Many commands modify input strings for string parsing reasons.
8529          * We create a copy to protect the original argv.
8530          */
8531         newargv = malloc((argc + 1) * sizeof (newargv[0]));
8532         for (i = 0; i < argc; i++)
8533                 newargv[i] = strdup(argv[i]);
8534         newargv[argc] = NULL;
8535
8536         /*
8537          * Run the appropriate command.
8538          */
8539         libzfs_mnttab_cache(g_zfs, B_TRUE);
8540         if (find_command_idx(cmdname, &i) == 0) {
8541                 current_command = &command_table[i];
8542                 ret = command_table[i].func(argc - 1, newargv + 1);
8543         } else if (strchr(cmdname, '=') != NULL) {
8544                 verify(find_command_idx("set", &i) == 0);
8545                 current_command = &command_table[i];
8546                 ret = command_table[i].func(argc, newargv);
8547         } else {
8548                 (void) fprintf(stderr, gettext("unrecognized "
8549                     "command '%s'\n"), cmdname);
8550                 usage(B_FALSE);
8551                 ret = 1;
8552         }
8553
8554         for (i = 0; i < argc; i++)
8555                 free(newargv[i]);
8556         free(newargv);
8557
8558         if (ret == 0 && log_history)
8559                 (void) zpool_log_history(g_zfs, history_str);
8560
8561         libzfs_fini(g_zfs);
8562
8563         /*
8564          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
8565          * for the purposes of running ::findleaks.
8566          */
8567         if (getenv("ZFS_ABORT") != NULL) {
8568                 (void) printf("dumping core by request\n");
8569                 abort();
8570         }
8571
8572         return (ret);
8573 }
8574
8575 #ifdef __FreeBSD__
8576 #include <sys/jail.h>
8577 #include <jail.h>
8578 /*
8579  * Attach/detach the given dataset to/from the given jail
8580  */
8581 /* ARGSUSED */
8582 static int
8583 zfs_do_jail_impl(int argc, char **argv, boolean_t attach)
8584 {
8585         zfs_handle_t *zhp;
8586         int jailid, ret;
8587
8588         /* check number of arguments */
8589         if (argc < 3) {
8590                 (void) fprintf(stderr, gettext("missing argument(s)\n"));
8591                 usage(B_FALSE);
8592         }
8593         if (argc > 3) {
8594                 (void) fprintf(stderr, gettext("too many arguments\n"));
8595                 usage(B_FALSE);
8596         }
8597
8598         jailid = jail_getid(argv[1]);
8599         if (jailid < 0) {
8600                 (void) fprintf(stderr, gettext("invalid jail id or name\n"));
8601                 usage(B_FALSE);
8602         }
8603
8604         zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
8605         if (zhp == NULL)
8606                 return (1);
8607
8608         ret = (zfs_jail(zhp, jailid, attach) != 0);
8609
8610         zfs_close(zhp);
8611         return (ret);
8612 }
8613
8614 /*
8615  * zfs jail jailid filesystem
8616  *
8617  * Attach the given dataset to the given jail
8618  */
8619 /* ARGSUSED */
8620 static int
8621 zfs_do_jail(int argc, char **argv)
8622 {
8623         return (zfs_do_jail_impl(argc, argv, B_TRUE));
8624 }
8625
8626 /*
8627  * zfs unjail jailid filesystem
8628  *
8629  * Detach the given dataset from the given jail
8630  */
8631 /* ARGSUSED */
8632 static int
8633 zfs_do_unjail(int argc, char **argv)
8634 {
8635         return (zfs_do_jail_impl(argc, argv, B_FALSE));
8636 }
8637 #endif