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, 2017 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) 2018 Datto Inc.
  31  */
  32
  33 #include <assert.h>
  34 #include <ctype.h>
  35 #include <errno.h>
  36 #include <getopt.h>
  37 #include <libgen.h>
  38 #include <libintl.h>
  39 #include <libuutil.h>
  40 #include <libnvpair.h>
  41 #include <locale.h>
  42 #include <stddef.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <strings.h>
  46 #include <unistd.h>
  47 #include <fcntl.h>
  48 #include <zone.h>
  49 #include <grp.h>
  50 #include <pwd.h>
  51 #include <signal.h>
  52 #include <sys/debug.h>
  53 #include <sys/list.h>
  54 #include <sys/mkdev.h>
  55 #include <sys/mntent.h>
  56 #include <sys/mnttab.h>
  57 #include <sys/mount.h>
  58 #include <sys/stat.h>
  59 #include <sys/fs/zfs.h>
  60 #include <sys/systeminfo.h>
  61 #include <sys/types.h>
  62 #include <time.h>
  63 #include <sys/zfs_project.h>
  64
  65 #include <libzfs.h>
  66 #include <libzfs_core.h>
  67 #include <zfs_prop.h>
  68 #include <zfs_deleg.h>
  69 #include <libuutil.h>
  70 #ifdef HAVE_IDMAP
  71 #include <aclutils.h>
  72 #include <directory.h>
  73 #endif /* HAVE_IDMAP */
  74
  75 #include "zfs_iter.h"
  76 #include "zfs_util.h"
  77 #include "zfs_comutil.h"
  78 #include "libzfs_impl.h"
  79 #include "zfs_projectutil.h"
  80
  81 libzfs_handle_t *g_zfs;
  82
  83 static FILE *mnttab_file;
  84 static char history_str[HIS_MAX_RECORD_LEN];
  85 static boolean_t log_history = B_TRUE;
  86
  87 static int zfs_do_clone(int argc, char **argv);
  88 static int zfs_do_create(int argc, char **argv);
  89 static int zfs_do_destroy(int argc, char **argv);
  90 static int zfs_do_get(int argc, char **argv);
  91 static int zfs_do_inherit(int argc, char **argv);
  92 static int zfs_do_list(int argc, char **argv);
  93 static int zfs_do_mount(int argc, char **argv);
  94 static int zfs_do_rename(int argc, char **argv);
  95 static int zfs_do_rollback(int argc, char **argv);
  96 static int zfs_do_set(int argc, char **argv);
  97 static int zfs_do_upgrade(int argc, char **argv);
  98 static int zfs_do_snapshot(int argc, char **argv);
  99 static int zfs_do_unmount(int argc, char **argv);
 100 static int zfs_do_share(int argc, char **argv);
 101 static int zfs_do_unshare(int argc, char **argv);
 102 static int zfs_do_send(int argc, char **argv);
 103 static int zfs_do_receive(int argc, char **argv);
 104 static int zfs_do_promote(int argc, char **argv);
 105 static int zfs_do_userspace(int argc, char **argv);
 106 static int zfs_do_allow(int argc, char **argv);
 107 static int zfs_do_unallow(int argc, char **argv);
 108 static int zfs_do_hold(int argc, char **argv);
 109 static int zfs_do_holds(int argc, char **argv);
 110 static int zfs_do_release(int argc, char **argv);
 111 static int zfs_do_diff(int argc, char **argv);
 112 static int zfs_do_bookmark(int argc, char **argv);
 113 static int zfs_do_channel_program(int argc, char **argv);
 114 static int zfs_do_remap(int argc, char **argv);
 115 static int zfs_do_load_key(int argc, char **argv);
 116 static int zfs_do_unload_key(int argc, char **argv);
 117 static int zfs_do_change_key(int argc, char **argv);
 118 static int zfs_do_project(int argc, char **argv);
 119
 120 /*
 121  * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 122  */
 123
 124 #ifdef DEBUG
 125 const char *
 126 _umem_debug_init(void)
 127 {
 128         return ("default,verbose"); /* $UMEM_DEBUG setting */
 129 }
 130
 131 const char *
 132 _umem_logging_init(void)
 133 {
 134         return ("fail,contents"); /* $UMEM_LOGGING setting */
 135 }
 136 #endif
 137
 138 typedef enum {
 139         HELP_CLONE,
 140         HELP_CREATE,
 141         HELP_DESTROY,
 142         HELP_GET,
 143         HELP_INHERIT,
 144         HELP_UPGRADE,
 145         HELP_LIST,
 146         HELP_MOUNT,
 147         HELP_PROMOTE,
 148         HELP_RECEIVE,
 149         HELP_RENAME,
 150         HELP_ROLLBACK,
 151         HELP_SEND,
 152         HELP_SET,
 153         HELP_SHARE,
 154         HELP_SNAPSHOT,
 155         HELP_UNMOUNT,
 156         HELP_UNSHARE,
 157         HELP_ALLOW,
 158         HELP_UNALLOW,
 159         HELP_USERSPACE,
 160         HELP_GROUPSPACE,
 161         HELP_PROJECTSPACE,
 162         HELP_PROJECT,
 163         HELP_HOLD,
 164         HELP_HOLDS,
 165         HELP_RELEASE,
 166         HELP_DIFF,
 167         HELP_REMAP,
 168         HELP_BOOKMARK,
 169         HELP_CHANNEL_PROGRAM,
 170         HELP_LOAD_KEY,
 171         HELP_UNLOAD_KEY,
 172         HELP_CHANGE_KEY,
 173 } zfs_help_t;
 174
 175 typedef struct zfs_command {
 176         const char      *name;
 177         int             (*func)(int argc, char **argv);
 178         zfs_help_t      usage;
 179 } zfs_command_t;
 180
 181 /*
 182  * Master command table.  Each ZFS command has a name, associated function, and
 183  * usage message.  The usage messages need to be internationalized, so we have
 184  * to have a function to return the usage message based on a command index.
 185  *
 186  * These commands are organized according to how they are displayed in the usage
 187  * message.  An empty command (one with a NULL name) indicates an empty line in
 188  * the generic usage message.
 189  */
 190 static zfs_command_t command_table[] = {
 191         { "create",     zfs_do_create,          HELP_CREATE             },
 192         { "destroy",    zfs_do_destroy,         HELP_DESTROY            },
 193         { NULL },
 194         { "snapshot",   zfs_do_snapshot,        HELP_SNAPSHOT           },
 195         { "rollback",   zfs_do_rollback,        HELP_ROLLBACK           },
 196         { "clone",      zfs_do_clone,           HELP_CLONE              },
 197         { "promote",    zfs_do_promote,         HELP_PROMOTE            },
 198         { "rename",     zfs_do_rename,          HELP_RENAME             },
 199         { "bookmark",   zfs_do_bookmark,        HELP_BOOKMARK           },
 200         { "program",    zfs_do_channel_program, HELP_CHANNEL_PROGRAM    },
 201         { NULL },
 202         { "list",       zfs_do_list,            HELP_LIST               },
 203         { NULL },
 204         { "set",        zfs_do_set,             HELP_SET                },
 205         { "get",        zfs_do_get,             HELP_GET                },
 206         { "inherit",    zfs_do_inherit,         HELP_INHERIT            },
 207         { "upgrade",    zfs_do_upgrade,         HELP_UPGRADE            },
 208         { NULL },
 209         { "userspace",  zfs_do_userspace,       HELP_USERSPACE          },
 210         { "groupspace", zfs_do_userspace,       HELP_GROUPSPACE         },
 211         { "projectspace", zfs_do_userspace,     HELP_PROJECTSPACE       },
 212         { NULL },
 213         { "project",    zfs_do_project,         HELP_PROJECT            },
 214         { NULL },
 215         { "mount",      zfs_do_mount,           HELP_MOUNT              },
 216         { "unmount",    zfs_do_unmount,         HELP_UNMOUNT            },
 217         { "share",      zfs_do_share,           HELP_SHARE              },
 218         { "unshare",    zfs_do_unshare,         HELP_UNSHARE            },
 219         { NULL },
 220         { "send",       zfs_do_send,            HELP_SEND               },
 221         { "receive",    zfs_do_receive,         HELP_RECEIVE            },
 222         { NULL },
 223         { "allow",      zfs_do_allow,           HELP_ALLOW              },
 224         { NULL },
 225         { "unallow",    zfs_do_unallow,         HELP_UNALLOW            },
 226         { NULL },
 227         { "hold",       zfs_do_hold,            HELP_HOLD               },
 228         { "holds",      zfs_do_holds,           HELP_HOLDS              },
 229         { "release",    zfs_do_release,         HELP_RELEASE            },
 230         { "diff",       zfs_do_diff,            HELP_DIFF               },
 231         { "remap",      zfs_do_remap,           HELP_REMAP              },
 232         { "load-key",   zfs_do_load_key,        HELP_LOAD_KEY           },
 233         { "unload-key", zfs_do_unload_key,      HELP_UNLOAD_KEY         },
 234         { "change-key", zfs_do_change_key,      HELP_CHANGE_KEY         },
 235 };
 236
 237 #define NCOMMAND        (sizeof (command_table) / sizeof (command_table[0]))
 238
 239 zfs_command_t *current_command;
 240
 241 static const char *
 242 get_usage(zfs_help_t idx)
 243 {
 244         switch (idx) {
 245         case HELP_CLONE:
 246                 return (gettext("\tclone [-p] [-o property=value] ... "
 247                     "<snapshot> <filesystem|volume>\n"));
 248         case HELP_CREATE:
 249                 return (gettext("\tcreate [-p] [-o property=value] ... "
 250                     "<filesystem>\n"
 251                     "\tcreate [-ps] [-b blocksize] [-o property=value] ... "
 252                     "-V <size> <volume>\n"));
 253         case HELP_DESTROY:
 254                 return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
 255                     "\tdestroy [-dnpRrv] "
 256                     "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 257                     "\tdestroy <filesystem|volume>#<bookmark>\n"));
 258         case HELP_GET:
 259                 return (gettext("\tget [-rHp] [-d max] "
 260                     "[-o \"all\" | field[,...]]\n"
 261                     "\t    [-t type[,...]] [-s source[,...]]\n"
 262                     "\t    <\"all\" | property[,...]> "
 263                     "[filesystem|volume|snapshot|bookmark] ...\n"));
 264         case HELP_INHERIT:
 265                 return (gettext("\tinherit [-rS] <property> "
 266                     "<filesystem|volume|snapshot> ...\n"));
 267         case HELP_UPGRADE:
 268                 return (gettext("\tupgrade [-v]\n"
 269                     "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 270         case HELP_LIST:
 271                 return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
 272                     "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 273                     "[filesystem|volume|snapshot] ...\n"));
 274         case HELP_MOUNT:
 275                 return (gettext("\tmount\n"
 276                     "\tmount [-lvO] [-o opts] <-a | filesystem>\n"));
 277         case HELP_PROMOTE:
 278                 return (gettext("\tpromote <clone-filesystem>\n"));
 279         case HELP_RECEIVE:
 280                 return (gettext("\treceive [-vnsFu] "
 281                     "[-o <property>=<value>] ... [-x <property>] ...\n"
 282                     "\t    <filesystem|volume|snapshot>\n"
 283                     "\treceive [-vnsFu] [-o <property>=<value>] ... "
 284                     "[-x <property>] ... \n"
 285                     "\t    [-d | -e] <filesystem>\n"
 286                     "\treceive -A <filesystem|volume>\n"));
 287         case HELP_RENAME:
 288                 return (gettext("\trename [-f] <filesystem|volume|snapshot> "
 289                     "<filesystem|volume|snapshot>\n"
 290                     "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
 291                     "\trename -r <snapshot> <snapshot>\n"));
 292         case HELP_ROLLBACK:
 293                 return (gettext("\trollback [-rRf] <snapshot>\n"));
 294         case HELP_SEND:
 295                 return (gettext("\tsend [-DnPpRvLecwb] [-[i|I] snapshot] "
 296                     "<snapshot>\n"
 297                     "\tsend [-nvPLecw] [-i snapshot|bookmark] "
 298                     "<filesystem|volume|snapshot>\n"
 299                     "\tsend [-nvPe] -t <receive_resume_token>\n"));
 300         case HELP_SET:
 301                 return (gettext("\tset <property=value> ... "
 302                     "<filesystem|volume|snapshot> ...\n"));
 303         case HELP_SHARE:
 304                 return (gettext("\tshare [-l] <-a [nfs|smb] | filesystem>\n"));
 305         case HELP_SNAPSHOT:
 306                 return (gettext("\tsnapshot [-r] [-o property=value] ... "
 307                     "<filesystem|volume>@<snap> ...\n"));
 308         case HELP_UNMOUNT:
 309                 return (gettext("\tunmount [-f] "
 310                     "<-a | filesystem|mountpoint>\n"));
 311         case HELP_UNSHARE:
 312                 return (gettext("\tunshare "
 313                     "<-a [nfs|smb] | filesystem|mountpoint>\n"));
 314         case HELP_ALLOW:
 315                 return (gettext("\tallow <filesystem|volume>\n"
 316                     "\tallow [-ldug] "
 317                     "<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
 318                     "\t    <filesystem|volume>\n"
 319                     "\tallow [-ld] -e <perm|@setname>[,...] "
 320                     "<filesystem|volume>\n"
 321                     "\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
 322                     "\tallow -s @setname <perm|@setname>[,...] "
 323                     "<filesystem|volume>\n"));
 324         case HELP_UNALLOW:
 325                 return (gettext("\tunallow [-rldug] "
 326                     "<\"everyone\"|user|group>[,...]\n"
 327                     "\t    [<perm|@setname>[,...]] <filesystem|volume>\n"
 328                     "\tunallow [-rld] -e [<perm|@setname>[,...]] "
 329                     "<filesystem|volume>\n"
 330                     "\tunallow [-r] -c [<perm|@setname>[,...]] "
 331                     "<filesystem|volume>\n"
 332                     "\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
 333                     "<filesystem|volume>\n"));
 334         case HELP_USERSPACE:
 335                 return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
 336                     "[-s field] ...\n"
 337                     "\t    [-S field] ... [-t type[,...]] "
 338                     "<filesystem|snapshot>\n"));
 339         case HELP_GROUPSPACE:
 340                 return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
 341                     "[-s field] ...\n"
 342                     "\t    [-S field] ... [-t type[,...]] "
 343                     "<filesystem|snapshot>\n"));
 344         case HELP_PROJECTSPACE:
 345                 return (gettext("\tprojectspace [-Hp] [-o field[,...]] "
 346                     "[-s field] ... \n"
 347                     "\t    [-S field] ... <filesystem|snapshot>\n"));
 348         case HELP_PROJECT:
 349                 return (gettext("\tproject [-d|-r] <directory|file ...>\n"
 350                     "\tproject -c [-0] [-d|-r] [-p id] <directory|file ...>\n"
 351                     "\tproject -C [-k] [-r] <directory ...>\n"
 352                     "\tproject [-p id] [-r] [-s] <directory ...>\n"));
 353         case HELP_HOLD:
 354                 return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
 355         case HELP_HOLDS:
 356                 return (gettext("\tholds [-r] <snapshot> ...\n"));
 357         case HELP_RELEASE:
 358                 return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
 359         case HELP_DIFF:
 360                 return (gettext("\tdiff [-FHt] <snapshot> "
 361                     "[snapshot|filesystem]\n"));
 362         case HELP_REMAP:
 363                 return (gettext("\tremap <filesystem | volume>\n"));
 364         case HELP_BOOKMARK:
 365                 return (gettext("\tbookmark <snapshot> <bookmark>\n"));
 366         case HELP_CHANNEL_PROGRAM:
 367                 return (gettext("\tprogram [-jn] [-t <instruction limit>] "
 368                     "[-m <memory limit (b)>] <pool> <program file> "
 369                     "[lua args...]\n"));
 370         case HELP_LOAD_KEY:
 371                 return (gettext("\tload-key [-rn] [-L <keylocation>] "
 372                     "<-a | filesystem|volume>\n"));
 373         case HELP_UNLOAD_KEY:
 374                 return (gettext("\tunload-key [-r] "
 375                     "<-a | filesystem|volume>\n"));
 376         case HELP_CHANGE_KEY:
 377                 return (gettext("\tchange-key [-l] [-o keyformat=<value>]\n"
 378                     "\t    [-o keylocation=<value>] [-o pbkfd2iters=<value>]\n"
 379                     "\t    <filesystem|volume>\n"
 380                     "\tchange-key -i [-l] <filesystem|volume>\n"));
 381         }
 382
 383         abort();
 384         /* NOTREACHED */
 385 }
 386
 387 void
 388 nomem(void)
 389 {
 390         (void) fprintf(stderr, gettext("internal error: out of memory\n"));
 391         exit(1);
 392 }
 393
 394 /*
 395  * Utility function to guarantee malloc() success.
 396  */
 397
 398 void *
 399 safe_malloc(size_t size)
 400 {
 401         void *data;
 402
 403         if ((data = calloc(1, size)) == NULL)
 404                 nomem();
 405
 406         return (data);
 407 }
 408
 409 void *
 410 safe_realloc(void *data, size_t size)
 411 {
 412         void *newp;
 413         if ((newp = realloc(data, size)) == NULL) {
 414                 free(data);
 415                 nomem();
 416         }
 417
 418         return (newp);
 419 }
 420
 421 static char *
 422 safe_strdup(char *str)
 423 {
 424         char *dupstr = strdup(str);
 425
 426         if (dupstr == NULL)
 427                 nomem();
 428
 429         return (dupstr);
 430 }
 431
 432 /*
 433  * Callback routine that will print out information for each of
 434  * the properties.
 435  */
 436 static int
 437 usage_prop_cb(int prop, void *cb)
 438 {
 439         FILE *fp = cb;
 440
 441         (void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
 442
 443         if (zfs_prop_readonly(prop))
 444                 (void) fprintf(fp, " NO    ");
 445         else
 446                 (void) fprintf(fp, "YES    ");
 447
 448         if (zfs_prop_inheritable(prop))
 449                 (void) fprintf(fp, "  YES   ");
 450         else
 451                 (void) fprintf(fp, "   NO   ");
 452
 453         if (zfs_prop_values(prop) == NULL)
 454                 (void) fprintf(fp, "-\n");
 455         else
 456                 (void) fprintf(fp, "%s\n", zfs_prop_values(prop));
 457
 458         return (ZPROP_CONT);
 459 }
 460
 461 /*
 462  * Display usage message.  If we're inside a command, display only the usage for
 463  * that command.  Otherwise, iterate over the entire command table and display
 464  * a complete usage message.
 465  */
 466 static void
 467 usage(boolean_t requested)
 468 {
 469         int i;
 470         boolean_t show_properties = B_FALSE;
 471         FILE *fp = requested ? stdout : stderr;
 472
 473         if (current_command == NULL) {
 474
 475                 (void) fprintf(fp, gettext("usage: zfs command args ...\n"));
 476                 (void) fprintf(fp,
 477                     gettext("where 'command' is one of the following:\n\n"));
 478
 479                 for (i = 0; i < NCOMMAND; i++) {
 480                         if (command_table[i].name == NULL)
 481                                 (void) fprintf(fp, "\n");
 482                         else
 483                                 (void) fprintf(fp, "%s",
 484                                     get_usage(command_table[i].usage));
 485                 }
 486
 487                 (void) fprintf(fp, gettext("\nEach dataset is of the form: "
 488                     "pool/[dataset/]*dataset[@name]\n"));
 489         } else {
 490                 (void) fprintf(fp, gettext("usage:\n"));
 491                 (void) fprintf(fp, "%s", get_usage(current_command->usage));
 492         }
 493
 494         if (current_command != NULL &&
 495             (strcmp(current_command->name, "set") == 0 ||
 496             strcmp(current_command->name, "get") == 0 ||
 497             strcmp(current_command->name, "inherit") == 0 ||
 498             strcmp(current_command->name, "list") == 0))
 499                 show_properties = B_TRUE;
 500
 501         if (show_properties) {
 502                 (void) fprintf(fp,
 503                     gettext("\nThe following properties are supported:\n"));
 504
 505                 (void) fprintf(fp, "\n\t%-14s %s  %s   %s\n\n",
 506                     "PROPERTY", "EDIT", "INHERIT", "VALUES");
 507
 508                 /* Iterate over all properties */
 509                 (void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
 510                     ZFS_TYPE_DATASET);
 511
 512                 (void) fprintf(fp, "\t%-15s ", "userused@...");
 513                 (void) fprintf(fp, " NO       NO   <size>\n");
 514                 (void) fprintf(fp, "\t%-15s ", "groupused@...");
 515                 (void) fprintf(fp, " NO       NO   <size>\n");
 516                 (void) fprintf(fp, "\t%-15s ", "projectused@...");
 517                 (void) fprintf(fp, " NO       NO   <size>\n");
 518                 (void) fprintf(fp, "\t%-15s ", "userobjused@...");
 519                 (void) fprintf(fp, " NO       NO   <size>\n");
 520                 (void) fprintf(fp, "\t%-15s ", "groupobjused@...");
 521                 (void) fprintf(fp, " NO       NO   <size>\n");
 522                 (void) fprintf(fp, "\t%-15s ", "projectobjused@...");
 523                 (void) fprintf(fp, " NO       NO   <size>\n");
 524                 (void) fprintf(fp, "\t%-15s ", "userquota@...");
 525                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 526                 (void) fprintf(fp, "\t%-15s ", "groupquota@...");
 527                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 528                 (void) fprintf(fp, "\t%-15s ", "projectquota@...");
 529                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 530                 (void) fprintf(fp, "\t%-15s ", "userobjquota@...");
 531                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 532                 (void) fprintf(fp, "\t%-15s ", "groupobjquota@...");
 533                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 534                 (void) fprintf(fp, "\t%-15s ", "projectobjquota@...");
 535                 (void) fprintf(fp, "YES       NO   <size> | none\n");
 536                 (void) fprintf(fp, "\t%-15s ", "written@<snap>");
 537                 (void) fprintf(fp, " NO       NO   <size>\n");
 538
 539                 (void) fprintf(fp, gettext("\nSizes are specified in bytes "
 540                     "with standard units such as K, M, G, etc.\n"));
 541                 (void) fprintf(fp, gettext("\nUser-defined properties can "
 542                     "be specified by using a name containing a colon (:).\n"));
 543                 (void) fprintf(fp, gettext("\nThe {user|group|project}"
 544                     "[obj]{used|quota}@ properties must be appended with\n"
 545                     "a user|group|project specifier of one of these forms:\n"
 546                     "    POSIX name      (eg: \"matt\")\n"
 547                     "    POSIX id        (eg: \"126829\")\n"
 548                     "    SMB name@domain (eg: \"matt@sun\")\n"
 549                     "    SMB SID         (eg: \"S-1-234-567-89\")\n"));
 550         } else {
 551                 (void) fprintf(fp,
 552                     gettext("\nFor the property list, run: %s\n"),
 553                     "zfs set|get");
 554                 (void) fprintf(fp,
 555                     gettext("\nFor the delegated permission list, run: %s\n"),
 556                     "zfs allow|unallow");
 557         }
 558
 559         /*
 560          * See comments at end of main().
 561          */
 562         if (getenv("ZFS_ABORT") != NULL) {
 563                 (void) printf("dumping core by request\n");
 564                 abort();
 565         }
 566
 567         exit(requested ? 0 : 2);
 568 }
 569
 570 /*
 571  * Take a property=value argument string and add it to the given nvlist.
 572  * Modifies the argument inplace.
 573  */
 574 static boolean_t
 575 parseprop(nvlist_t *props, char *propname)
 576 {
 577         char *propval;
 578
 579         if ((propval = strchr(propname, '=')) == NULL) {
 580                 (void) fprintf(stderr, gettext("missing "
 581                     "'=' for property=value argument\n"));
 582                 return (B_FALSE);
 583         }
 584         *propval = '\0';
 585         propval++;
 586         if (nvlist_exists(props, propname)) {
 587                 (void) fprintf(stderr, gettext("property '%s' "
 588                     "specified multiple times\n"), propname);
 589                 return (B_FALSE);
 590         }
 591         if (nvlist_add_string(props, propname, propval) != 0)
 592                 nomem();
 593         return (B_TRUE);
 594 }
 595
 596 /*
 597  * Take a property name argument and add it to the given nvlist.
 598  * Modifies the argument inplace.
 599  */
 600 static boolean_t
 601 parsepropname(nvlist_t *props, char *propname)
 602 {
 603         if (strchr(propname, '=') != NULL) {
 604                 (void) fprintf(stderr, gettext("invalid character "
 605                     "'=' in property argument\n"));
 606                 return (B_FALSE);
 607         }
 608         if (nvlist_exists(props, propname)) {
 609                 (void) fprintf(stderr, gettext("property '%s' "
 610                     "specified multiple times\n"), propname);
 611                 return (B_FALSE);
 612         }
 613         if (nvlist_add_boolean(props, propname) != 0)
 614                 nomem();
 615         return (B_TRUE);
 616 }
 617
 618 static int
 619 parse_depth(char *opt, int *flags)
 620 {
 621         char *tmp;
 622         int depth;
 623
 624         depth = (int)strtol(opt, &tmp, 0);
 625         if (*tmp) {
 626                 (void) fprintf(stderr,
 627                     gettext("%s is not an integer\n"), optarg);
 628                 usage(B_FALSE);
 629         }
 630         if (depth < 0) {
 631                 (void) fprintf(stderr,
 632                     gettext("Depth can not be negative.\n"));
 633                 usage(B_FALSE);
 634         }
 635         *flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
 636         return (depth);
 637 }
 638
 639 #define PROGRESS_DELAY 2                /* seconds */
 640
 641 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";
 642 static time_t pt_begin;
 643 static char *pt_header = NULL;
 644 static boolean_t pt_shown;
 645
 646 static void
 647 start_progress_timer(void)
 648 {
 649         pt_begin = time(NULL) + PROGRESS_DELAY;
 650         pt_shown = B_FALSE;
 651 }
 652
 653 static void
 654 set_progress_header(char *header)
 655 {
 656         assert(pt_header == NULL);
 657         pt_header = safe_strdup(header);
 658         if (pt_shown) {
 659                 (void) printf("%s: ", header);
 660                 (void) fflush(stdout);
 661         }
 662 }
 663
 664 static void
 665 update_progress(char *update)
 666 {
 667         if (!pt_shown && time(NULL) > pt_begin) {
 668                 int len = strlen(update);
 669
 670                 (void) printf("%s: %s%*.*s", pt_header, update, len, len,
 671                     pt_reverse);
 672                 (void) fflush(stdout);
 673                 pt_shown = B_TRUE;
 674         } else if (pt_shown) {
 675                 int len = strlen(update);
 676
 677                 (void) printf("%s%*.*s", update, len, len, pt_reverse);
 678                 (void) fflush(stdout);
 679         }
 680 }
 681
 682 static void
 683 finish_progress(char *done)
 684 {
 685         if (pt_shown) {
 686                 (void) printf("%s\n", done);
 687                 (void) fflush(stdout);
 688         }
 689         free(pt_header);
 690         pt_header = NULL;
 691 }
 692
 693 static int
 694 zfs_mount_and_share(libzfs_handle_t *hdl, const char *dataset, zfs_type_t type)
 695 {
 696         zfs_handle_t *zhp = NULL;
 697         int ret = 0;
 698
 699         zhp = zfs_open(hdl, dataset, type);
 700         if (zhp == NULL)
 701                 return (1);
 702
 703         /*
 704          * Volumes may neither be mounted or shared.  Potentially in the
 705          * future filesystems detected on these volumes could be mounted.
 706          */
 707         if (zfs_get_type(zhp) == ZFS_TYPE_VOLUME) {
 708                 zfs_close(zhp);
 709                 return (0);
 710         }
 711
 712         /*
 713          * Mount and/or share the new filesystem as appropriate.  We provide a
 714          * verbose error message to let the user know that their filesystem was
 715          * in fact created, even if we failed to mount or share it.
 716          *
 717          * If the user doesn't want the dataset automatically mounted, then
 718          * skip the mount/share step
 719          */
 720         if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type, B_FALSE) &&
 721             zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON) {
 722                 if (geteuid() != 0) {
 723                         (void) fprintf(stderr, gettext("filesystem "
 724                             "successfully created, but it may only be "
 725                             "mounted by root\n"));
 726                         ret = 1;
 727                 } else if (zfs_mount(zhp, NULL, 0) != 0) {
 728                         (void) fprintf(stderr, gettext("filesystem "
 729                             "successfully created, but not mounted\n"));
 730                         ret = 1;
 731                 } else if (zfs_share(zhp) != 0) {
 732                         (void) fprintf(stderr, gettext("filesystem "
 733                             "successfully created, but not shared\n"));
 734                         ret = 1;
 735                 }
 736         }
 737
 738         zfs_close(zhp);
 739
 740         return (ret);
 741 }
 742
 743 /*
 744  * zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
 745  *
 746  * Given an existing dataset, create a writable copy whose initial contents
 747  * are the same as the source.  The newly created dataset maintains a
 748  * dependency on the original; the original cannot be destroyed so long as
 749  * the clone exists.
 750  *
 751  * The '-p' flag creates all the non-existing ancestors of the target first.
 752  */
 753 static int
 754 zfs_do_clone(int argc, char **argv)
 755 {
 756         zfs_handle_t *zhp = NULL;
 757         boolean_t parents = B_FALSE;
 758         nvlist_t *props;
 759         int ret = 0;
 760         int c;
 761
 762         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 763                 nomem();
 764
 765         /* check options */
 766         while ((c = getopt(argc, argv, "o:p")) != -1) {
 767                 switch (c) {
 768                 case 'o':
 769                         if (!parseprop(props, optarg)) {
 770                                 nvlist_free(props);
 771                                 return (1);
 772                         }
 773                         break;
 774                 case 'p':
 775                         parents = B_TRUE;
 776                         break;
 777                 case '?':
 778                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 779                             optopt);
 780                         goto usage;
 781                 }
 782         }
 783
 784         argc -= optind;
 785         argv += optind;
 786
 787         /* check number of arguments */
 788         if (argc < 1) {
 789                 (void) fprintf(stderr, gettext("missing source dataset "
 790                     "argument\n"));
 791                 goto usage;
 792         }
 793         if (argc < 2) {
 794                 (void) fprintf(stderr, gettext("missing target dataset "
 795                     "argument\n"));
 796                 goto usage;
 797         }
 798         if (argc > 2) {
 799                 (void) fprintf(stderr, gettext("too many arguments\n"));
 800                 goto usage;
 801         }
 802
 803         /* open the source dataset */
 804         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) {
 805                 nvlist_free(props);
 806                 return (1);
 807         }
 808
 809         if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
 810             ZFS_TYPE_VOLUME)) {
 811                 /*
 812                  * Now create the ancestors of the target dataset.  If the
 813                  * target already exists and '-p' option was used we should not
 814                  * complain.
 815                  */
 816                 if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
 817                     ZFS_TYPE_VOLUME)) {
 818                         zfs_close(zhp);
 819                         nvlist_free(props);
 820                         return (0);
 821                 }
 822                 if (zfs_create_ancestors(g_zfs, argv[1]) != 0) {
 823                         zfs_close(zhp);
 824                         nvlist_free(props);
 825                         return (1);
 826                 }
 827         }
 828
 829         /* pass to libzfs */
 830         ret = zfs_clone(zhp, argv[1], props);
 831
 832         /* create the mountpoint if necessary */
 833         if (ret == 0) {
 834                 if (log_history) {
 835                         (void) zpool_log_history(g_zfs, history_str);
 836                         log_history = B_FALSE;
 837                 }
 838
 839                 ret = zfs_mount_and_share(g_zfs, argv[1], ZFS_TYPE_DATASET);
 840         }
 841
 842         zfs_close(zhp);
 843         nvlist_free(props);
 844
 845         return (!!ret);
 846
 847 usage:
 848         ASSERT3P(zhp, ==, NULL);
 849         nvlist_free(props);
 850         usage(B_FALSE);
 851         return (-1);
 852 }
 853
 854 /*
 855  * zfs create [-p] [-o prop=value] ... fs
 856  * zfs create [-ps] [-b blocksize] [-o prop=value] ... -V vol size
 857  *
 858  * Create a new dataset.  This command can be used to create filesystems
 859  * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
 860  * For volumes, the user must specify a size to be used.
 861  *
 862  * The '-s' flag applies only to volumes, and indicates that we should not try
 863  * to set the reservation for this volume.  By default we set a reservation
 864  * equal to the size for any volume.  For pools with SPA_VERSION >=
 865  * SPA_VERSION_REFRESERVATION, we set a refreservation instead.
 866  *
 867  * The '-p' flag creates all the non-existing ancestors of the target first.
 868  */
 869 static int
 870 zfs_do_create(int argc, char **argv)
 871 {
 872         zfs_type_t type = ZFS_TYPE_FILESYSTEM;
 873         uint64_t volsize = 0;
 874         int c;
 875         boolean_t noreserve = B_FALSE;
 876         boolean_t bflag = B_FALSE;
 877         boolean_t parents = B_FALSE;
 878         int ret = 1;
 879         nvlist_t *props;
 880         uint64_t intval;
 881
 882         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
 883                 nomem();
 884
 885         /* check options */
 886         while ((c = getopt(argc, argv, ":V:b:so:p")) != -1) {
 887                 switch (c) {
 888                 case 'V':
 889                         type = ZFS_TYPE_VOLUME;
 890                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 891                                 (void) fprintf(stderr, gettext("bad volume "
 892                                     "size '%s': %s\n"), optarg,
 893                                     libzfs_error_description(g_zfs));
 894                                 goto error;
 895                         }
 896
 897                         if (nvlist_add_uint64(props,
 898                             zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
 899                                 nomem();
 900                         volsize = intval;
 901                         break;
 902                 case 'p':
 903                         parents = B_TRUE;
 904                         break;
 905                 case 'b':
 906                         bflag = B_TRUE;
 907                         if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
 908                                 (void) fprintf(stderr, gettext("bad volume "
 909                                     "block size '%s': %s\n"), optarg,
 910                                     libzfs_error_description(g_zfs));
 911                                 goto error;
 912                         }
 913
 914                         if (nvlist_add_uint64(props,
 915                             zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
 916                             intval) != 0)
 917                                 nomem();
 918                         break;
 919                 case 'o':
 920                         if (!parseprop(props, optarg))
 921                                 goto error;
 922                         break;
 923                 case 's':
 924                         noreserve = B_TRUE;
 925                         break;
 926                 case ':':
 927                         (void) fprintf(stderr, gettext("missing size "
 928                             "argument\n"));
 929                         goto badusage;
 930                 case '?':
 931                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
 932                             optopt);
 933                         goto badusage;
 934                 }
 935         }
 936
 937         if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
 938                 (void) fprintf(stderr, gettext("'-s' and '-b' can only be "
 939                     "used when creating a volume\n"));
 940                 goto badusage;
 941         }
 942
 943         argc -= optind;
 944         argv += optind;
 945
 946         /* check number of arguments */
 947         if (argc == 0) {
 948                 (void) fprintf(stderr, gettext("missing %s argument\n"),
 949                     zfs_type_to_name(type));
 950                 goto badusage;
 951         }
 952         if (argc > 1) {
 953                 (void) fprintf(stderr, gettext("too many arguments\n"));
 954                 goto badusage;
 955         }
 956
 957         if (type == ZFS_TYPE_VOLUME && !noreserve) {
 958                 zpool_handle_t *zpool_handle;
 959                 nvlist_t *real_props = NULL;
 960                 uint64_t spa_version;
 961                 char *p;
 962                 zfs_prop_t resv_prop;
 963                 char *strval;
 964                 char msg[1024];
 965
 966                 if ((p = strchr(argv[0], '/')) != NULL)
 967                         *p = '\0';
 968                 zpool_handle = zpool_open(g_zfs, argv[0]);
 969                 if (p != NULL)
 970                         *p = '/';
 971                 if (zpool_handle == NULL)
 972                         goto error;
 973                 spa_version = zpool_get_prop_int(zpool_handle,
 974                     ZPOOL_PROP_VERSION, NULL);
 975                 if (spa_version >= SPA_VERSION_REFRESERVATION)
 976                         resv_prop = ZFS_PROP_REFRESERVATION;
 977                 else
 978                         resv_prop = ZFS_PROP_RESERVATION;
 979
 980                 (void) snprintf(msg, sizeof (msg),
 981                     gettext("cannot create '%s'"), argv[0]);
 982                 if (props && (real_props = zfs_valid_proplist(g_zfs, type,
 983                     props, 0, NULL, zpool_handle, B_TRUE, msg)) == NULL) {
 984                         zpool_close(zpool_handle);
 985                         goto error;
 986                 }
 987                 zpool_close(zpool_handle);
 988
 989                 volsize = zvol_volsize_to_reservation(volsize, real_props);
 990                 nvlist_free(real_props);
 991
 992                 if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
 993                     &strval) != 0) {
 994                         if (nvlist_add_uint64(props,
 995                             zfs_prop_to_name(resv_prop), volsize) != 0) {
 996                                 nvlist_free(props);
 997                                 nomem();
 998                         }
 999                 }
1000         }
1001
1002         if (parents && zfs_name_valid(argv[0], type)) {
1003                 /*
1004                  * Now create the ancestors of target dataset.  If the target
1005                  * already exists and '-p' option was used we should not
1006                  * complain.
1007                  */
1008                 if (zfs_dataset_exists(g_zfs, argv[0], type)) {
1009                         ret = 0;
1010                         goto error;
1011                 }
1012                 if (zfs_create_ancestors(g_zfs, argv[0]) != 0)
1013                         goto error;
1014         }
1015
1016         /* pass to libzfs */
1017         if (zfs_create(g_zfs, argv[0], type, props) != 0)
1018                 goto error;
1019
1020         if (log_history) {
1021                 (void) zpool_log_history(g_zfs, history_str);
1022                 log_history = B_FALSE;
1023         }
1024
1025         ret = zfs_mount_and_share(g_zfs, argv[0], ZFS_TYPE_DATASET);
1026 error:
1027         nvlist_free(props);
1028         return (ret);
1029 badusage:
1030         nvlist_free(props);
1031         usage(B_FALSE);
1032         return (2);
1033 }
1034
1035 /*
1036  * zfs destroy [-rRf] <fs, vol>
1037  * zfs destroy [-rRd] <snap>
1038  *
1039  *      -r      Recursively destroy all children
1040  *      -R      Recursively destroy all dependents, including clones
1041  *      -f      Force unmounting of any dependents
1042  *      -d      If we can't destroy now, mark for deferred destruction
1043  *
1044  * Destroys the given dataset.  By default, it will unmount any filesystems,
1045  * and refuse to destroy a dataset that has any dependents.  A dependent can
1046  * either be a child, or a clone of a child.
1047  */
1048 typedef struct destroy_cbdata {
1049         boolean_t       cb_first;
1050         boolean_t       cb_force;
1051         boolean_t       cb_recurse;
1052         boolean_t       cb_error;
1053         boolean_t       cb_doclones;
1054         zfs_handle_t    *cb_target;
1055         boolean_t       cb_defer_destroy;
1056         boolean_t       cb_verbose;
1057         boolean_t       cb_parsable;
1058         boolean_t       cb_dryrun;
1059         nvlist_t        *cb_nvl;
1060         nvlist_t        *cb_batchedsnaps;
1061
1062         /* first snap in contiguous run */
1063         char            *cb_firstsnap;
1064         /* previous snap in contiguous run */
1065         char            *cb_prevsnap;
1066         int64_t         cb_snapused;
1067         char            *cb_snapspec;
1068         char            *cb_bookmark;
1069         uint64_t        cb_snap_count;
1070 } destroy_cbdata_t;
1071
1072 /*
1073  * Check for any dependents based on the '-r' or '-R' flags.
1074  */
1075 static int
1076 destroy_check_dependent(zfs_handle_t *zhp, void *data)
1077 {
1078         destroy_cbdata_t *cbp = data;
1079         const char *tname = zfs_get_name(cbp->cb_target);
1080         const char *name = zfs_get_name(zhp);
1081
1082         if (strncmp(tname, name, strlen(tname)) == 0 &&
1083             (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
1084                 /*
1085                  * This is a direct descendant, not a clone somewhere else in
1086                  * the hierarchy.
1087                  */
1088                 if (cbp->cb_recurse)
1089                         goto out;
1090
1091                 if (cbp->cb_first) {
1092                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1093                             "%s has children\n"),
1094                             zfs_get_name(cbp->cb_target),
1095                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1096                         (void) fprintf(stderr, gettext("use '-r' to destroy "
1097                             "the following datasets:\n"));
1098                         cbp->cb_first = B_FALSE;
1099                         cbp->cb_error = B_TRUE;
1100                 }
1101
1102                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1103         } else {
1104                 /*
1105                  * This is a clone.  We only want to report this if the '-r'
1106                  * wasn't specified, or the target is a snapshot.
1107                  */
1108                 if (!cbp->cb_recurse &&
1109                     zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
1110                         goto out;
1111
1112                 if (cbp->cb_first) {
1113                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1114                             "%s has dependent clones\n"),
1115                             zfs_get_name(cbp->cb_target),
1116                             zfs_type_to_name(zfs_get_type(cbp->cb_target)));
1117                         (void) fprintf(stderr, gettext("use '-R' to destroy "
1118                             "the following datasets:\n"));
1119                         cbp->cb_first = B_FALSE;
1120                         cbp->cb_error = B_TRUE;
1121                         cbp->cb_dryrun = B_TRUE;
1122                 }
1123
1124                 (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
1125         }
1126
1127 out:
1128         zfs_close(zhp);
1129         return (0);
1130 }
1131
1132 static int
1133 destroy_batched(destroy_cbdata_t *cb)
1134 {
1135         int error = zfs_destroy_snaps_nvl(g_zfs,
1136             cb->cb_batchedsnaps, B_FALSE);
1137         fnvlist_free(cb->cb_batchedsnaps);
1138         cb->cb_batchedsnaps = fnvlist_alloc();
1139         return (error);
1140 }
1141
1142 static int
1143 destroy_callback(zfs_handle_t *zhp, void *data)
1144 {
1145         destroy_cbdata_t *cb = data;
1146         const char *name = zfs_get_name(zhp);
1147         int error;
1148
1149         if (cb->cb_verbose) {
1150                 if (cb->cb_parsable) {
1151                         (void) printf("destroy\t%s\n", name);
1152                 } else if (cb->cb_dryrun) {
1153                         (void) printf(gettext("would destroy %s\n"),
1154                             name);
1155                 } else {
1156                         (void) printf(gettext("will destroy %s\n"),
1157                             name);
1158                 }
1159         }
1160
1161         /*
1162          * Ignore pools (which we've already flagged as an error before getting
1163          * here).
1164          */
1165         if (strchr(zfs_get_name(zhp), '/') == NULL &&
1166             zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1167                 zfs_close(zhp);
1168                 return (0);
1169         }
1170         if (cb->cb_dryrun) {
1171                 zfs_close(zhp);
1172                 return (0);
1173         }
1174
1175         /*
1176          * We batch up all contiguous snapshots (even of different
1177          * filesystems) and destroy them with one ioctl.  We can't
1178          * simply do all snap deletions and then all fs deletions,
1179          * because we must delete a clone before its origin.
1180          */
1181         if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
1182                 cb->cb_snap_count++;
1183                 fnvlist_add_boolean(cb->cb_batchedsnaps, name);
1184                 if (cb->cb_snap_count % 10 == 0 && cb->cb_defer_destroy)
1185                         error = destroy_batched(cb);
1186         } else {
1187                 error = destroy_batched(cb);
1188                 if (error != 0 ||
1189                     zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
1190                     zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
1191                         zfs_close(zhp);
1192                         return (-1);
1193                 }
1194         }
1195
1196         zfs_close(zhp);
1197         return (0);
1198 }
1199
1200 static int
1201 destroy_print_cb(zfs_handle_t *zhp, void *arg)
1202 {
1203         destroy_cbdata_t *cb = arg;
1204         const char *name = zfs_get_name(zhp);
1205         int err = 0;
1206
1207         if (nvlist_exists(cb->cb_nvl, name)) {
1208                 if (cb->cb_firstsnap == NULL)
1209                         cb->cb_firstsnap = strdup(name);
1210                 if (cb->cb_prevsnap != NULL)
1211                         free(cb->cb_prevsnap);
1212                 /* this snap continues the current range */
1213                 cb->cb_prevsnap = strdup(name);
1214                 if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
1215                         nomem();
1216                 if (cb->cb_verbose) {
1217                         if (cb->cb_parsable) {
1218                                 (void) printf("destroy\t%s\n", name);
1219                         } else if (cb->cb_dryrun) {
1220                                 (void) printf(gettext("would destroy %s\n"),
1221                                     name);
1222                         } else {
1223                                 (void) printf(gettext("will destroy %s\n"),
1224                                     name);
1225                         }
1226                 }
1227         } else if (cb->cb_firstsnap != NULL) {
1228                 /* end of this range */
1229                 uint64_t used = 0;
1230                 err = lzc_snaprange_space(cb->cb_firstsnap,
1231                     cb->cb_prevsnap, &used);
1232                 cb->cb_snapused += used;
1233                 free(cb->cb_firstsnap);
1234                 cb->cb_firstsnap = NULL;
1235                 free(cb->cb_prevsnap);
1236                 cb->cb_prevsnap = NULL;
1237         }
1238         zfs_close(zhp);
1239         return (err);
1240 }
1241
1242 static int
1243 destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
1244 {
1245         int err;
1246         assert(cb->cb_firstsnap == NULL);
1247         assert(cb->cb_prevsnap == NULL);
1248         err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb);
1249         if (cb->cb_firstsnap != NULL) {
1250                 uint64_t used = 0;
1251                 if (err == 0) {
1252                         err = lzc_snaprange_space(cb->cb_firstsnap,
1253                             cb->cb_prevsnap, &used);
1254                 }
1255                 cb->cb_snapused += used;
1256                 free(cb->cb_firstsnap);
1257                 cb->cb_firstsnap = NULL;
1258                 free(cb->cb_prevsnap);
1259                 cb->cb_prevsnap = NULL;
1260         }
1261         return (err);
1262 }
1263
1264 static int
1265 snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
1266 {
1267         destroy_cbdata_t *cb = arg;
1268         int err = 0;
1269
1270         /* Check for clones. */
1271         if (!cb->cb_doclones && !cb->cb_defer_destroy) {
1272                 cb->cb_target = zhp;
1273                 cb->cb_first = B_TRUE;
1274                 err = zfs_iter_dependents(zhp, B_TRUE,
1275                     destroy_check_dependent, cb);
1276         }
1277
1278         if (err == 0) {
1279                 if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
1280                         nomem();
1281         }
1282         zfs_close(zhp);
1283         return (err);
1284 }
1285
1286 static int
1287 gather_snapshots(zfs_handle_t *zhp, void *arg)
1288 {
1289         destroy_cbdata_t *cb = arg;
1290         int err = 0;
1291
1292         err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
1293         if (err == ENOENT)
1294                 err = 0;
1295         if (err != 0)
1296                 goto out;
1297
1298         if (cb->cb_verbose) {
1299                 err = destroy_print_snapshots(zhp, cb);
1300                 if (err != 0)
1301                         goto out;
1302         }
1303
1304         if (cb->cb_recurse)
1305                 err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
1306
1307 out:
1308         zfs_close(zhp);
1309         return (err);
1310 }
1311
1312 static int
1313 destroy_clones(destroy_cbdata_t *cb)
1314 {
1315         nvpair_t *pair;
1316         for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
1317             pair != NULL;
1318             pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
1319                 zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
1320                     ZFS_TYPE_SNAPSHOT);
1321                 if (zhp != NULL) {
1322                         boolean_t defer = cb->cb_defer_destroy;
1323                         int err;
1324
1325                         /*
1326                          * We can't defer destroy non-snapshots, so set it to
1327                          * false while destroying the clones.
1328                          */
1329                         cb->cb_defer_destroy = B_FALSE;
1330                         err = zfs_iter_dependents(zhp, B_FALSE,
1331                             destroy_callback, cb);
1332                         cb->cb_defer_destroy = defer;
1333                         zfs_close(zhp);
1334                         if (err != 0)
1335                                 return (err);
1336                 }
1337         }
1338         return (0);
1339 }
1340
1341 static int
1342 zfs_do_destroy(int argc, char **argv)
1343 {
1344         destroy_cbdata_t cb = { 0 };
1345         int rv = 0;
1346         int err = 0;
1347         int c;
1348         zfs_handle_t *zhp = NULL;
1349         char *at, *pound;
1350         zfs_type_t type = ZFS_TYPE_DATASET;
1351
1352         /* check options */
1353         while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
1354                 switch (c) {
1355                 case 'v':
1356                         cb.cb_verbose = B_TRUE;
1357                         break;
1358                 case 'p':
1359                         cb.cb_verbose = B_TRUE;
1360                         cb.cb_parsable = B_TRUE;
1361                         break;
1362                 case 'n':
1363                         cb.cb_dryrun = B_TRUE;
1364                         break;
1365                 case 'd':
1366                         cb.cb_defer_destroy = B_TRUE;
1367                         type = ZFS_TYPE_SNAPSHOT;
1368                         break;
1369                 case 'f':
1370                         cb.cb_force = B_TRUE;
1371                         break;
1372                 case 'r':
1373                         cb.cb_recurse = B_TRUE;
1374                         break;
1375                 case 'R':
1376                         cb.cb_recurse = B_TRUE;
1377                         cb.cb_doclones = B_TRUE;
1378                         break;
1379                 case '?':
1380                 default:
1381                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1382                             optopt);
1383                         usage(B_FALSE);
1384                 }
1385         }
1386
1387         argc -= optind;
1388         argv += optind;
1389
1390         /* check number of arguments */
1391         if (argc == 0) {
1392                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
1393                 usage(B_FALSE);
1394         }
1395         if (argc > 1) {
1396                 (void) fprintf(stderr, gettext("too many arguments\n"));
1397                 usage(B_FALSE);
1398         }
1399
1400         at = strchr(argv[0], '@');
1401         pound = strchr(argv[0], '#');
1402         if (at != NULL) {
1403
1404                 /* Build the list of snaps to destroy in cb_nvl. */
1405                 cb.cb_nvl = fnvlist_alloc();
1406
1407                 *at = '\0';
1408                 zhp = zfs_open(g_zfs, argv[0],
1409                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
1410                 if (zhp == NULL) {
1411                         nvlist_free(cb.cb_nvl);
1412                         return (1);
1413                 }
1414
1415                 cb.cb_snapspec = at + 1;
1416                 if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
1417                     cb.cb_error) {
1418                         rv = 1;
1419                         goto out;
1420                 }
1421
1422                 if (nvlist_empty(cb.cb_nvl)) {
1423                         (void) fprintf(stderr, gettext("could not find any "
1424                             "snapshots to destroy; check snapshot names.\n"));
1425                         rv = 1;
1426                         goto out;
1427                 }
1428
1429                 if (cb.cb_verbose) {
1430                         char buf[16];
1431                         zfs_nicebytes(cb.cb_snapused, buf, sizeof (buf));
1432                         if (cb.cb_parsable) {
1433                                 (void) printf("reclaim\t%llu\n",
1434                                     (u_longlong_t)cb.cb_snapused);
1435                         } else if (cb.cb_dryrun) {
1436                                 (void) printf(gettext("would reclaim %s\n"),
1437                                     buf);
1438                         } else {
1439                                 (void) printf(gettext("will reclaim %s\n"),
1440                                     buf);
1441                         }
1442                 }
1443
1444                 if (!cb.cb_dryrun) {
1445                         if (cb.cb_doclones) {
1446                                 cb.cb_batchedsnaps = fnvlist_alloc();
1447                                 err = destroy_clones(&cb);
1448                                 if (err == 0) {
1449                                         err = zfs_destroy_snaps_nvl(g_zfs,
1450                                             cb.cb_batchedsnaps, B_FALSE);
1451                                 }
1452                                 if (err != 0) {
1453                                         rv = 1;
1454                                         goto out;
1455                                 }
1456                         }
1457                         if (err == 0) {
1458                                 err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
1459                                     cb.cb_defer_destroy);
1460                         }
1461                 }
1462
1463                 if (err != 0)
1464                         rv = 1;
1465         } else if (pound != NULL) {
1466                 int err;
1467                 nvlist_t *nvl;
1468
1469                 if (cb.cb_dryrun) {
1470                         (void) fprintf(stderr,
1471                             "dryrun is not supported with bookmark\n");
1472                         return (-1);
1473                 }
1474
1475                 if (cb.cb_defer_destroy) {
1476                         (void) fprintf(stderr,
1477                             "defer destroy is not supported with bookmark\n");
1478                         return (-1);
1479                 }
1480
1481                 if (cb.cb_recurse) {
1482                         (void) fprintf(stderr,
1483                             "recursive is not supported with bookmark\n");
1484                         return (-1);
1485                 }
1486
1487                 if (!zfs_bookmark_exists(argv[0])) {
1488                         (void) fprintf(stderr, gettext("bookmark '%s' "
1489                             "does not exist.\n"), argv[0]);
1490                         return (1);
1491                 }
1492
1493                 nvl = fnvlist_alloc();
1494                 fnvlist_add_boolean(nvl, argv[0]);
1495
1496                 err = lzc_destroy_bookmarks(nvl, NULL);
1497                 if (err != 0) {
1498                         (void) zfs_standard_error(g_zfs, err,
1499                             "cannot destroy bookmark");
1500                 }
1501
1502                 nvlist_free(nvl);
1503
1504                 return (err);
1505         } else {
1506                 /* Open the given dataset */
1507                 if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
1508                         return (1);
1509
1510                 cb.cb_target = zhp;
1511
1512                 /*
1513                  * Perform an explicit check for pools before going any further.
1514                  */
1515                 if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
1516                     zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
1517                         (void) fprintf(stderr, gettext("cannot destroy '%s': "
1518                             "operation does not apply to pools\n"),
1519                             zfs_get_name(zhp));
1520                         (void) fprintf(stderr, gettext("use 'zfs destroy -r "
1521                             "%s' to destroy all datasets in the pool\n"),
1522                             zfs_get_name(zhp));
1523                         (void) fprintf(stderr, gettext("use 'zpool destroy %s' "
1524                             "to destroy the pool itself\n"), zfs_get_name(zhp));
1525                         rv = 1;
1526                         goto out;
1527                 }
1528
1529                 /*
1530                  * Check for any dependents and/or clones.
1531                  */
1532                 cb.cb_first = B_TRUE;
1533                 if (!cb.cb_doclones &&
1534                     zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
1535                     &cb) != 0) {
1536                         rv = 1;
1537                         goto out;
1538                 }
1539
1540                 if (cb.cb_error) {
1541                         rv = 1;
1542                         goto out;
1543                 }
1544                 cb.cb_batchedsnaps = fnvlist_alloc();
1545                 if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
1546                     &cb) != 0) {
1547                         rv = 1;
1548                         goto out;
1549                 }
1550
1551                 /*
1552                  * Do the real thing.  The callback will close the
1553                  * handle regardless of whether it succeeds or not.
1554                  */
1555                 err = destroy_callback(zhp, &cb);
1556                 zhp = NULL;
1557                 if (err == 0) {
1558                         err = zfs_destroy_snaps_nvl(g_zfs,
1559                             cb.cb_batchedsnaps, cb.cb_defer_destroy);
1560                 }
1561                 if (err != 0)
1562                         rv = 1;
1563         }
1564
1565 out:
1566         fnvlist_free(cb.cb_batchedsnaps);
1567         fnvlist_free(cb.cb_nvl);
1568         if (zhp != NULL)
1569                 zfs_close(zhp);
1570         return (rv);
1571 }
1572
1573 static boolean_t
1574 is_recvd_column(zprop_get_cbdata_t *cbp)
1575 {
1576         int i;
1577         zfs_get_column_t col;
1578
1579         for (i = 0; i < ZFS_GET_NCOLS &&
1580             (col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
1581                 if (col == GET_COL_RECVD)
1582                         return (B_TRUE);
1583         return (B_FALSE);
1584 }
1585
1586 /*
1587  * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
1588  *      < all | property[,property]... > < fs | snap | vol > ...
1589  *
1590  *      -r      recurse over any child datasets
1591  *      -H      scripted mode.  Headers are stripped, and fields are separated
1592  *              by tabs instead of spaces.
1593  *      -o      Set of fields to display.  One of "name,property,value,
1594  *              received,source". Default is "name,property,value,source".
1595  *              "all" is an alias for all five.
1596  *      -s      Set of sources to allow.  One of
1597  *              "local,default,inherited,received,temporary,none".  Default is
1598  *              all six.
1599  *      -p      Display values in parsable (literal) format.
1600  *
1601  *  Prints properties for the given datasets.  The user can control which
1602  *  columns to display as well as which property types to allow.
1603  */
1604
1605 /*
1606  * Invoked to display the properties for a single dataset.
1607  */
1608 static int
1609 get_callback(zfs_handle_t *zhp, void *data)
1610 {
1611         char buf[ZFS_MAXPROPLEN];
1612         char rbuf[ZFS_MAXPROPLEN];
1613         zprop_source_t sourcetype;
1614         char source[ZFS_MAX_DATASET_NAME_LEN];
1615         zprop_get_cbdata_t *cbp = data;
1616         nvlist_t *user_props = zfs_get_user_props(zhp);
1617         zprop_list_t *pl = cbp->cb_proplist;
1618         nvlist_t *propval;
1619         char *strval;
1620         char *sourceval;
1621         boolean_t received = is_recvd_column(cbp);
1622
1623         for (; pl != NULL; pl = pl->pl_next) {
1624                 char *recvdval = NULL;
1625                 /*
1626                  * Skip the special fake placeholder.  This will also skip over
1627                  * the name property when 'all' is specified.
1628                  */
1629                 if (pl->pl_prop == ZFS_PROP_NAME &&
1630                     pl == cbp->cb_proplist)
1631                         continue;
1632
1633                 if (pl->pl_prop != ZPROP_INVAL) {
1634                         if (zfs_prop_get(zhp, pl->pl_prop, buf,
1635                             sizeof (buf), &sourcetype, source,
1636                             sizeof (source),
1637                             cbp->cb_literal) != 0) {
1638                                 if (pl->pl_all)
1639                                         continue;
1640                                 if (!zfs_prop_valid_for_type(pl->pl_prop,
1641                                     ZFS_TYPE_DATASET, B_FALSE)) {
1642                                         (void) fprintf(stderr,
1643                                             gettext("No such property '%s'\n"),
1644                                             zfs_prop_to_name(pl->pl_prop));
1645                                         continue;
1646                                 }
1647                                 sourcetype = ZPROP_SRC_NONE;
1648                                 (void) strlcpy(buf, "-", sizeof (buf));
1649                         }
1650
1651                         if (received && (zfs_prop_get_recvd(zhp,
1652                             zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
1653                             cbp->cb_literal) == 0))
1654                                 recvdval = rbuf;
1655
1656                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1657                             zfs_prop_to_name(pl->pl_prop),
1658                             buf, sourcetype, source, recvdval);
1659                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
1660                         sourcetype = ZPROP_SRC_LOCAL;
1661
1662                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
1663                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1664                                 sourcetype = ZPROP_SRC_NONE;
1665                                 (void) strlcpy(buf, "-", sizeof (buf));
1666                         }
1667
1668                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1669                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1670                 } else if (zfs_prop_written(pl->pl_user_prop)) {
1671                         sourcetype = ZPROP_SRC_LOCAL;
1672
1673                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
1674                             buf, sizeof (buf), cbp->cb_literal) != 0) {
1675                                 sourcetype = ZPROP_SRC_NONE;
1676                                 (void) strlcpy(buf, "-", sizeof (buf));
1677                         }
1678
1679                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1680                             pl->pl_user_prop, buf, sourcetype, source, NULL);
1681                 } else {
1682                         if (nvlist_lookup_nvlist(user_props,
1683                             pl->pl_user_prop, &propval) != 0) {
1684                                 if (pl->pl_all)
1685                                         continue;
1686                                 sourcetype = ZPROP_SRC_NONE;
1687                                 strval = "-";
1688                         } else {
1689                                 verify(nvlist_lookup_string(propval,
1690                                     ZPROP_VALUE, &strval) == 0);
1691                                 verify(nvlist_lookup_string(propval,
1692                                     ZPROP_SOURCE, &sourceval) == 0);
1693
1694                                 if (strcmp(sourceval,
1695                                     zfs_get_name(zhp)) == 0) {
1696                                         sourcetype = ZPROP_SRC_LOCAL;
1697                                 } else if (strcmp(sourceval,
1698                                     ZPROP_SOURCE_VAL_RECVD) == 0) {
1699                                         sourcetype = ZPROP_SRC_RECEIVED;
1700                                 } else {
1701                                         sourcetype = ZPROP_SRC_INHERITED;
1702                                         (void) strlcpy(source,
1703                                             sourceval, sizeof (source));
1704                                 }
1705                         }
1706
1707                         if (received && (zfs_prop_get_recvd(zhp,
1708                             pl->pl_user_prop, rbuf, sizeof (rbuf),
1709                             cbp->cb_literal) == 0))
1710                                 recvdval = rbuf;
1711
1712                         zprop_print_one_property(zfs_get_name(zhp), cbp,
1713                             pl->pl_user_prop, strval, sourcetype,
1714                             source, recvdval);
1715                 }
1716         }
1717
1718         return (0);
1719 }
1720
1721 static int
1722 zfs_do_get(int argc, char **argv)
1723 {
1724         zprop_get_cbdata_t cb = { 0 };
1725         int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
1726         int types = ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK;
1727         char *value, *fields;
1728         int ret = 0;
1729         int limit = 0;
1730         zprop_list_t fake_name = { 0 };
1731
1732         /*
1733          * Set up default columns and sources.
1734          */
1735         cb.cb_sources = ZPROP_SRC_ALL;
1736         cb.cb_columns[0] = GET_COL_NAME;
1737         cb.cb_columns[1] = GET_COL_PROPERTY;
1738         cb.cb_columns[2] = GET_COL_VALUE;
1739         cb.cb_columns[3] = GET_COL_SOURCE;
1740         cb.cb_type = ZFS_TYPE_DATASET;
1741
1742         /* check options */
1743         while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
1744                 switch (c) {
1745                 case 'p':
1746                         cb.cb_literal = B_TRUE;
1747                         break;
1748                 case 'd':
1749                         limit = parse_depth(optarg, &flags);
1750                         break;
1751                 case 'r':
1752                         flags |= ZFS_ITER_RECURSE;
1753                         break;
1754                 case 'H':
1755                         cb.cb_scripted = B_TRUE;
1756                         break;
1757                 case ':':
1758                         (void) fprintf(stderr, gettext("missing argument for "
1759                             "'%c' option\n"), optopt);
1760                         usage(B_FALSE);
1761                         break;
1762                 case 'o':
1763                         /*
1764                          * Process the set of columns to display.  We zero out
1765                          * the structure to give us a blank slate.
1766                          */
1767                         bzero(&cb.cb_columns, sizeof (cb.cb_columns));
1768                         i = 0;
1769                         while (*optarg != '\0') {
1770                                 static char *col_subopts[] =
1771                                     { "name", "property", "value", "received",
1772                                     "source", "all", NULL };
1773
1774                                 if (i == ZFS_GET_NCOLS) {
1775                                         (void) fprintf(stderr, gettext("too "
1776                                             "many fields given to -o "
1777                                             "option\n"));
1778                                         usage(B_FALSE);
1779                                 }
1780
1781                                 switch (getsubopt(&optarg, col_subopts,
1782                                     &value)) {
1783                                 case 0:
1784                                         cb.cb_columns[i++] = GET_COL_NAME;
1785                                         break;
1786                                 case 1:
1787                                         cb.cb_columns[i++] = GET_COL_PROPERTY;
1788                                         break;
1789                                 case 2:
1790                                         cb.cb_columns[i++] = GET_COL_VALUE;
1791                                         break;
1792                                 case 3:
1793                                         cb.cb_columns[i++] = GET_COL_RECVD;
1794                                         flags |= ZFS_ITER_RECVD_PROPS;
1795                                         break;
1796                                 case 4:
1797                                         cb.cb_columns[i++] = GET_COL_SOURCE;
1798                                         break;
1799                                 case 5:
1800                                         if (i > 0) {
1801                                                 (void) fprintf(stderr,
1802                                                     gettext("\"all\" conflicts "
1803                                                     "with specific fields "
1804                                                     "given to -o option\n"));
1805                                                 usage(B_FALSE);
1806                                         }
1807                                         cb.cb_columns[0] = GET_COL_NAME;
1808                                         cb.cb_columns[1] = GET_COL_PROPERTY;
1809                                         cb.cb_columns[2] = GET_COL_VALUE;
1810                                         cb.cb_columns[3] = GET_COL_RECVD;
1811                                         cb.cb_columns[4] = GET_COL_SOURCE;
1812                                         flags |= ZFS_ITER_RECVD_PROPS;
1813                                         i = ZFS_GET_NCOLS;
1814                                         break;
1815                                 default:
1816                                         (void) fprintf(stderr,
1817                                             gettext("invalid column name "
1818                                             "'%s'\n"), value);
1819                                         usage(B_FALSE);
1820                                 }
1821                         }
1822                         break;
1823
1824                 case 's':
1825                         cb.cb_sources = 0;
1826                         while (*optarg != '\0') {
1827                                 static char *source_subopts[] = {
1828                                         "local", "default", "inherited",
1829                                         "received", "temporary", "none",
1830                                         NULL };
1831
1832                                 switch (getsubopt(&optarg, source_subopts,
1833                                     &value)) {
1834                                 case 0:
1835                                         cb.cb_sources |= ZPROP_SRC_LOCAL;
1836                                         break;
1837                                 case 1:
1838                                         cb.cb_sources |= ZPROP_SRC_DEFAULT;
1839                                         break;
1840                                 case 2:
1841                                         cb.cb_sources |= ZPROP_SRC_INHERITED;
1842                                         break;
1843                                 case 3:
1844                                         cb.cb_sources |= ZPROP_SRC_RECEIVED;
1845                                         break;
1846                                 case 4:
1847                                         cb.cb_sources |= ZPROP_SRC_TEMPORARY;
1848                                         break;
1849                                 case 5:
1850                                         cb.cb_sources |= ZPROP_SRC_NONE;
1851                                         break;
1852                                 default:
1853                                         (void) fprintf(stderr,
1854                                             gettext("invalid source "
1855                                             "'%s'\n"), value);
1856                                         usage(B_FALSE);
1857                                 }
1858                         }
1859                         break;
1860
1861                 case 't':
1862                         types = 0;
1863                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
1864                         while (*optarg != '\0') {
1865                                 static char *type_subopts[] = { "filesystem",
1866                                     "volume", "snapshot", "bookmark",
1867                                     "all", NULL };
1868
1869                                 switch (getsubopt(&optarg, type_subopts,
1870                                     &value)) {
1871                                 case 0:
1872                                         types |= ZFS_TYPE_FILESYSTEM;
1873                                         break;
1874                                 case 1:
1875                                         types |= ZFS_TYPE_VOLUME;
1876                                         break;
1877                                 case 2:
1878                                         types |= ZFS_TYPE_SNAPSHOT;
1879                                         break;
1880                                 case 3:
1881                                         types |= ZFS_TYPE_BOOKMARK;
1882                                         break;
1883                                 case 4:
1884                                         types = ZFS_TYPE_DATASET |
1885                                             ZFS_TYPE_BOOKMARK;
1886                                         break;
1887
1888                                 default:
1889                                         (void) fprintf(stderr,
1890                                             gettext("invalid type '%s'\n"),
1891                                             value);
1892                                         usage(B_FALSE);
1893                                 }
1894                         }
1895                         break;
1896
1897                 case '?':
1898                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
1899                             optopt);
1900                         usage(B_FALSE);
1901                 }
1902         }
1903
1904         argc -= optind;
1905         argv += optind;
1906
1907         if (argc < 1) {
1908                 (void) fprintf(stderr, gettext("missing property "
1909                     "argument\n"));
1910                 usage(B_FALSE);
1911         }
1912
1913         fields = argv[0];
1914
1915         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
1916             != 0)
1917                 usage(B_FALSE);
1918
1919         argc--;
1920         argv++;
1921
1922         /*
1923          * As part of zfs_expand_proplist(), we keep track of the maximum column
1924          * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
1925          * need to know the maximum name length.  However, the user likely did
1926          * not specify 'name' as one of the properties to fetch, so we need to
1927          * make sure we always include at least this property for
1928          * print_get_headers() to work properly.
1929          */
1930         if (cb.cb_proplist != NULL) {
1931                 fake_name.pl_prop = ZFS_PROP_NAME;
1932                 fake_name.pl_width = strlen(gettext("NAME"));
1933                 fake_name.pl_next = cb.cb_proplist;
1934                 cb.cb_proplist = &fake_name;
1935         }
1936
1937         cb.cb_first = B_TRUE;
1938
1939         /* run for each object */
1940         ret = zfs_for_each(argc, argv, flags, types, NULL,
1941             &cb.cb_proplist, limit, get_callback, &cb);
1942
1943         if (cb.cb_proplist == &fake_name)
1944                 zprop_free_list(fake_name.pl_next);
1945         else
1946                 zprop_free_list(cb.cb_proplist);
1947
1948         return (ret);
1949 }
1950
1951 /*
1952  * inherit [-rS] <property> <fs|vol> ...
1953  *
1954  *      -r      Recurse over all children
1955  *      -S      Revert to received value, if any
1956  *
1957  * For each dataset specified on the command line, inherit the given property
1958  * from its parent.  Inheriting a property at the pool level will cause it to
1959  * use the default value.  The '-r' flag will recurse over all children, and is
1960  * useful for setting a property on a hierarchy-wide basis, regardless of any
1961  * local modifications for each dataset.
1962  */
1963
1964 typedef struct inherit_cbdata {
1965         const char *cb_propname;
1966         boolean_t cb_received;
1967 } inherit_cbdata_t;
1968
1969 static int
1970 inherit_recurse_cb(zfs_handle_t *zhp, void *data)
1971 {
1972         inherit_cbdata_t *cb = data;
1973         zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
1974
1975         /*
1976          * If we're doing it recursively, then ignore properties that
1977          * are not valid for this type of dataset.
1978          */
1979         if (prop != ZPROP_INVAL &&
1980             !zfs_prop_valid_for_type(prop, zfs_get_type(zhp), B_FALSE))
1981                 return (0);
1982
1983         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1984 }
1985
1986 static int
1987 inherit_cb(zfs_handle_t *zhp, void *data)
1988 {
1989         inherit_cbdata_t *cb = data;
1990
1991         return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
1992 }
1993
1994 static int
1995 zfs_do_inherit(int argc, char **argv)
1996 {
1997         int c;
1998         zfs_prop_t prop;
1999         inherit_cbdata_t cb = { 0 };
2000         char *propname;
2001         int ret = 0;
2002         int flags = 0;
2003         boolean_t received = B_FALSE;
2004
2005         /* check options */
2006         while ((c = getopt(argc, argv, "rS")) != -1) {
2007                 switch (c) {
2008                 case 'r':
2009                         flags |= ZFS_ITER_RECURSE;
2010                         break;
2011                 case 'S':
2012                         received = B_TRUE;
2013                         break;
2014                 case '?':
2015                 default:
2016                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2017                             optopt);
2018                         usage(B_FALSE);
2019                 }
2020         }
2021
2022         argc -= optind;
2023         argv += optind;
2024
2025         /* check number of arguments */
2026         if (argc < 1) {
2027                 (void) fprintf(stderr, gettext("missing property argument\n"));
2028                 usage(B_FALSE);
2029         }
2030         if (argc < 2) {
2031                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
2032                 usage(B_FALSE);
2033         }
2034
2035         propname = argv[0];
2036         argc--;
2037         argv++;
2038
2039         if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
2040                 if (zfs_prop_readonly(prop)) {
2041                         (void) fprintf(stderr, gettext(
2042                             "%s property is read-only\n"),
2043                             propname);
2044                         return (1);
2045                 }
2046                 if (!zfs_prop_inheritable(prop) && !received) {
2047                         (void) fprintf(stderr, gettext("'%s' property cannot "
2048                             "be inherited\n"), propname);
2049                         if (prop == ZFS_PROP_QUOTA ||
2050                             prop == ZFS_PROP_RESERVATION ||
2051                             prop == ZFS_PROP_REFQUOTA ||
2052                             prop == ZFS_PROP_REFRESERVATION) {
2053                                 (void) fprintf(stderr, gettext("use 'zfs set "
2054                                     "%s=none' to clear\n"), propname);
2055                                 (void) fprintf(stderr, gettext("use 'zfs "
2056                                     "inherit -S %s' to revert to received "
2057                                     "value\n"), propname);
2058                         }
2059                         return (1);
2060                 }
2061                 if (received && (prop == ZFS_PROP_VOLSIZE ||
2062                     prop == ZFS_PROP_VERSION)) {
2063                         (void) fprintf(stderr, gettext("'%s' property cannot "
2064                             "be reverted to a received value\n"), propname);
2065                         return (1);
2066                 }
2067         } else if (!zfs_prop_user(propname)) {
2068                 (void) fprintf(stderr, gettext("invalid property '%s'\n"),
2069                     propname);
2070                 usage(B_FALSE);
2071         }
2072
2073         cb.cb_propname = propname;
2074         cb.cb_received = received;
2075
2076         if (flags & ZFS_ITER_RECURSE) {
2077                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
2078                     NULL, NULL, 0, inherit_recurse_cb, &cb);
2079         } else {
2080                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
2081                     NULL, NULL, 0, inherit_cb, &cb);
2082         }
2083
2084         return (ret);
2085 }
2086
2087 typedef struct upgrade_cbdata {
2088         uint64_t cb_numupgraded;
2089         uint64_t cb_numsamegraded;
2090         uint64_t cb_numfailed;
2091         uint64_t cb_version;
2092         boolean_t cb_newer;
2093         boolean_t cb_foundone;
2094         char cb_lastfs[ZFS_MAX_DATASET_NAME_LEN];
2095 } upgrade_cbdata_t;
2096
2097 static int
2098 same_pool(zfs_handle_t *zhp, const char *name)
2099 {
2100         int len1 = strcspn(name, "/@");
2101         const char *zhname = zfs_get_name(zhp);
2102         int len2 = strcspn(zhname, "/@");
2103
2104         if (len1 != len2)
2105                 return (B_FALSE);
2106         return (strncmp(name, zhname, len1) == 0);
2107 }
2108
2109 static int
2110 upgrade_list_callback(zfs_handle_t *zhp, void *data)
2111 {
2112         upgrade_cbdata_t *cb = data;
2113         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2114
2115         /* list if it's old/new */
2116         if ((!cb->cb_newer && version < ZPL_VERSION) ||
2117             (cb->cb_newer && version > ZPL_VERSION)) {
2118                 char *str;
2119                 if (cb->cb_newer) {
2120                         str = gettext("The following filesystems are "
2121                             "formatted using a newer software version and\n"
2122                             "cannot be accessed on the current system.\n\n");
2123                 } else {
2124                         str = gettext("The following filesystems are "
2125                             "out of date, and can be upgraded.  After being\n"
2126                             "upgraded, these filesystems (and any 'zfs send' "
2127                             "streams generated from\n"
2128                             "subsequent snapshots) will no longer be "
2129                             "accessible by older software versions.\n\n");
2130                 }
2131
2132                 if (!cb->cb_foundone) {
2133                         (void) puts(str);
2134                         (void) printf(gettext("VER  FILESYSTEM\n"));
2135                         (void) printf(gettext("---  ------------\n"));
2136                         cb->cb_foundone = B_TRUE;
2137                 }
2138
2139                 (void) printf("%2u   %s\n", version, zfs_get_name(zhp));
2140         }
2141
2142         return (0);
2143 }
2144
2145 static int
2146 upgrade_set_callback(zfs_handle_t *zhp, void *data)
2147 {
2148         upgrade_cbdata_t *cb = data;
2149         int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
2150         int needed_spa_version;
2151         int spa_version;
2152
2153         if (zfs_spa_version(zhp, &spa_version) < 0)
2154                 return (-1);
2155
2156         needed_spa_version = zfs_spa_version_map(cb->cb_version);
2157
2158         if (needed_spa_version < 0)
2159                 return (-1);
2160
2161         if (spa_version < needed_spa_version) {
2162                 /* can't upgrade */
2163                 (void) printf(gettext("%s: can not be "
2164                     "upgraded; the pool version needs to first "
2165                     "be upgraded\nto version %d\n\n"),
2166                     zfs_get_name(zhp), needed_spa_version);
2167                 cb->cb_numfailed++;
2168                 return (0);
2169         }
2170
2171         /* upgrade */
2172         if (version < cb->cb_version) {
2173                 char verstr[16];
2174                 (void) snprintf(verstr, sizeof (verstr),
2175                     "%llu", (u_longlong_t)cb->cb_version);
2176                 if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
2177                         /*
2178                          * If they did "zfs upgrade -a", then we could
2179                          * be doing ioctls to different pools.  We need
2180                          * to log this history once to each pool, and bypass
2181                          * the normal history logging that happens in main().
2182                          */
2183                         (void) zpool_log_history(g_zfs, history_str);
2184                         log_history = B_FALSE;
2185                 }
2186                 if (zfs_prop_set(zhp, "version", verstr) == 0)
2187                         cb->cb_numupgraded++;
2188                 else
2189                         cb->cb_numfailed++;
2190                 (void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
2191         } else if (version > cb->cb_version) {
2192                 /* can't downgrade */
2193                 (void) printf(gettext("%s: can not be downgraded; "
2194                     "it is already at version %u\n"),
2195                     zfs_get_name(zhp), version);
2196                 cb->cb_numfailed++;
2197         } else {
2198                 cb->cb_numsamegraded++;
2199         }
2200         return (0);
2201 }
2202
2203 /*
2204  * zfs upgrade
2205  * zfs upgrade -v
2206  * zfs upgrade [-r] [-V <version>] <-a | filesystem>
2207  */
2208 static int
2209 zfs_do_upgrade(int argc, char **argv)
2210 {
2211         boolean_t all = B_FALSE;
2212         boolean_t showversions = B_FALSE;
2213         int ret = 0;
2214         upgrade_cbdata_t cb = { 0 };
2215         signed char c;
2216         int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
2217
2218         /* check options */
2219         while ((c = getopt(argc, argv, "rvV:a")) != -1) {
2220                 switch (c) {
2221                 case 'r':
2222                         flags |= ZFS_ITER_RECURSE;
2223                         break;
2224                 case 'v':
2225                         showversions = B_TRUE;
2226                         break;
2227                 case 'V':
2228                         if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
2229                             optarg, &cb.cb_version) != 0) {
2230                                 (void) fprintf(stderr,
2231                                     gettext("invalid version %s\n"), optarg);
2232                                 usage(B_FALSE);
2233                         }
2234                         break;
2235                 case 'a':
2236                         all = B_TRUE;
2237                         break;
2238                 case '?':
2239                 default:
2240                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2241                             optopt);
2242                         usage(B_FALSE);
2243                 }
2244         }
2245
2246         argc -= optind;
2247         argv += optind;
2248
2249         if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
2250                 usage(B_FALSE);
2251         if (showversions && (flags & ZFS_ITER_RECURSE || all ||
2252             cb.cb_version || argc))
2253                 usage(B_FALSE);
2254         if ((all || argc) && (showversions))
2255                 usage(B_FALSE);
2256         if (all && argc)
2257                 usage(B_FALSE);
2258
2259         if (showversions) {
2260                 /* Show info on available versions. */
2261                 (void) printf(gettext("The following filesystem versions are "
2262                     "supported:\n\n"));
2263                 (void) printf(gettext("VER  DESCRIPTION\n"));
2264                 (void) printf("---  -----------------------------------------"
2265                     "---------------\n");
2266                 (void) printf(gettext(" 1   Initial ZFS filesystem version\n"));
2267                 (void) printf(gettext(" 2   Enhanced directory entries\n"));
2268                 (void) printf(gettext(" 3   Case insensitive and filesystem "
2269                     "user identifier (FUID)\n"));
2270                 (void) printf(gettext(" 4   userquota, groupquota "
2271                     "properties\n"));
2272                 (void) printf(gettext(" 5   System attributes\n"));
2273                 (void) printf(gettext("\nFor more information on a particular "
2274                     "version, including supported releases,\n"));
2275                 (void) printf("see the ZFS Administration Guide.\n\n");
2276                 ret = 0;
2277         } else if (argc || all) {
2278                 /* Upgrade filesystems */
2279                 if (cb.cb_version == 0)
2280                         cb.cb_version = ZPL_VERSION;
2281                 ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
2282                     NULL, NULL, 0, upgrade_set_callback, &cb);
2283                 (void) printf(gettext("%llu filesystems upgraded\n"),
2284                     (u_longlong_t)cb.cb_numupgraded);
2285                 if (cb.cb_numsamegraded) {
2286                         (void) printf(gettext("%llu filesystems already at "
2287                             "this version\n"),
2288                             (u_longlong_t)cb.cb_numsamegraded);
2289                 }
2290                 if (cb.cb_numfailed != 0)
2291                         ret = 1;
2292         } else {
2293                 /* List old-version filesystems */
2294                 boolean_t found;
2295                 (void) printf(gettext("This system is currently running "
2296                     "ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
2297
2298                 flags |= ZFS_ITER_RECURSE;
2299                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2300                     NULL, NULL, 0, upgrade_list_callback, &cb);
2301
2302                 found = cb.cb_foundone;
2303                 cb.cb_foundone = B_FALSE;
2304                 cb.cb_newer = B_TRUE;
2305
2306                 ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
2307                     NULL, NULL, 0, upgrade_list_callback, &cb);
2308
2309                 if (!cb.cb_foundone && !found) {
2310                         (void) printf(gettext("All filesystems are "
2311                             "formatted with the current version.\n"));
2312                 }
2313         }
2314
2315         return (ret);
2316 }
2317
2318 /*
2319  * zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2320  *               [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2321  * zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
2322  *                [-S field [-S field]...] [-t type[,...]] filesystem | snapshot
2323  * zfs projectspace [-Hp] [-o field[,...]] [-s field [-s field]...]
2324  *                [-S field [-S field]...] filesystem | snapshot
2325  *
2326  *      -H      Scripted mode; elide headers and separate columns by tabs.
2327  *      -i      Translate SID to POSIX ID.
2328  *      -n      Print numeric ID instead of user/group name.
2329  *      -o      Control which fields to display.
2330  *      -p      Use exact (parsable) numeric output.
2331  *      -s      Specify sort columns, descending order.
2332  *      -S      Specify sort columns, ascending order.
2333  *      -t      Control which object types to display.
2334  *
2335  *      Displays space consumed by, and quotas on, each user in the specified
2336  *      filesystem or snapshot.
2337  */
2338
2339 /* us_field_types, us_field_hdr and us_field_names should be kept in sync */
2340 enum us_field_types {
2341         USFIELD_TYPE,
2342         USFIELD_NAME,
2343         USFIELD_USED,
2344         USFIELD_QUOTA,
2345         USFIELD_OBJUSED,
2346         USFIELD_OBJQUOTA
2347 };
2348 static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA",
2349                                     "OBJUSED", "OBJQUOTA" };
2350 static char *us_field_names[] = { "type", "name", "used", "quota",
2351                                     "objused", "objquota" };
2352 #define USFIELD_LAST    (sizeof (us_field_names) / sizeof (char *))
2353
2354 #define USTYPE_PSX_GRP  (1 << 0)
2355 #define USTYPE_PSX_USR  (1 << 1)
2356 #define USTYPE_SMB_GRP  (1 << 2)
2357 #define USTYPE_SMB_USR  (1 << 3)
2358 #define USTYPE_PROJ     (1 << 4)
2359 #define USTYPE_ALL      \
2360         (USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR | \
2361             USTYPE_PROJ)
2362
2363 static int us_type_bits[] = {
2364         USTYPE_PSX_GRP,
2365         USTYPE_PSX_USR,
2366         USTYPE_SMB_GRP,
2367         USTYPE_SMB_USR,
2368         USTYPE_ALL
2369 };
2370 static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
2371         "smbuser", "all" };
2372
2373 typedef struct us_node {
2374         nvlist_t        *usn_nvl;
2375         uu_avl_node_t   usn_avlnode;
2376         uu_list_node_t  usn_listnode;
2377 } us_node_t;
2378
2379 typedef struct us_cbdata {
2380         nvlist_t        **cb_nvlp;
2381         uu_avl_pool_t   *cb_avl_pool;
2382         uu_avl_t        *cb_avl;
2383         boolean_t       cb_numname;
2384         boolean_t       cb_nicenum;
2385         boolean_t       cb_sid2posix;
2386         zfs_userquota_prop_t cb_prop;
2387         zfs_sort_column_t *cb_sortcol;
2388         size_t          cb_width[USFIELD_LAST];
2389 } us_cbdata_t;
2390
2391 static boolean_t us_populated = B_FALSE;
2392
2393 typedef struct {
2394         zfs_sort_column_t *si_sortcol;
2395         boolean_t       si_numname;
2396 } us_sort_info_t;
2397
2398 static int
2399 us_field_index(char *field)
2400 {
2401         int i;
2402
2403         for (i = 0; i < USFIELD_LAST; i++) {
2404                 if (strcmp(field, us_field_names[i]) == 0)
2405                         return (i);
2406         }
2407
2408         return (-1);
2409 }
2410
2411 static int
2412 us_compare(const void *larg, const void *rarg, void *unused)
2413 {
2414         const us_node_t *l = larg;
2415         const us_node_t *r = rarg;
2416         us_sort_info_t *si = (us_sort_info_t *)unused;
2417         zfs_sort_column_t *sortcol = si->si_sortcol;
2418         boolean_t numname = si->si_numname;
2419         nvlist_t *lnvl = l->usn_nvl;
2420         nvlist_t *rnvl = r->usn_nvl;
2421         int rc = 0;
2422         boolean_t lvb, rvb;
2423
2424         for (; sortcol != NULL; sortcol = sortcol->sc_next) {
2425                 char *lvstr = "";
2426                 char *rvstr = "";
2427                 uint32_t lv32 = 0;
2428                 uint32_t rv32 = 0;
2429                 uint64_t lv64 = 0;
2430                 uint64_t rv64 = 0;
2431                 zfs_prop_t prop = sortcol->sc_prop;
2432                 const char *propname = NULL;
2433                 boolean_t reverse = sortcol->sc_reverse;
2434
2435                 switch (prop) {
2436                 case ZFS_PROP_TYPE:
2437                         propname = "type";
2438                         (void) nvlist_lookup_uint32(lnvl, propname, &lv32);
2439                         (void) nvlist_lookup_uint32(rnvl, propname, &rv32);
2440                         if (rv32 != lv32)
2441                                 rc = (rv32 < lv32) ? 1 : -1;
2442                         break;
2443                 case ZFS_PROP_NAME:
2444                         propname = "name";
2445                         if (numname) {
2446 compare_nums:
2447                                 (void) nvlist_lookup_uint64(lnvl, propname,
2448                                     &lv64);
2449                                 (void) nvlist_lookup_uint64(rnvl, propname,
2450                                     &rv64);
2451                                 if (rv64 != lv64)
2452                                         rc = (rv64 < lv64) ? 1 : -1;
2453                         } else {
2454                                 if ((nvlist_lookup_string(lnvl, propname,
2455                                     &lvstr) == ENOENT) ||
2456                                     (nvlist_lookup_string(rnvl, propname,
2457                                     &rvstr) == ENOENT)) {
2458                                         goto compare_nums;
2459                                 }
2460                                 rc = strcmp(lvstr, rvstr);
2461                         }
2462                         break;
2463                 case ZFS_PROP_USED:
2464                 case ZFS_PROP_QUOTA:
2465                         if (!us_populated)
2466                                 break;
2467                         if (prop == ZFS_PROP_USED)
2468                                 propname = "used";
2469                         else
2470                                 propname = "quota";
2471                         (void) nvlist_lookup_uint64(lnvl, propname, &lv64);
2472                         (void) nvlist_lookup_uint64(rnvl, propname, &rv64);
2473                         if (rv64 != lv64)
2474                                 rc = (rv64 < lv64) ? 1 : -1;
2475                         break;
2476
2477                 default:
2478                         break;
2479                 }
2480
2481                 if (rc != 0) {
2482                         if (rc < 0)
2483                                 return (reverse ? 1 : -1);
2484                         else
2485                                 return (reverse ? -1 : 1);
2486                 }
2487         }
2488
2489         /*
2490          * If entries still seem to be the same, check if they are of the same
2491          * type (smbentity is added only if we are doing SID to POSIX ID
2492          * translation where we can have duplicate type/name combinations).
2493          */
2494         if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
2495             nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
2496             lvb != rvb)
2497                 return (lvb < rvb ? -1 : 1);
2498
2499         return (0);
2500 }
2501
2502 static boolean_t
2503 zfs_prop_is_user(unsigned p)
2504 {
2505         return (p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA ||
2506             p == ZFS_PROP_USEROBJUSED || p == ZFS_PROP_USEROBJQUOTA);
2507 }
2508
2509 static boolean_t
2510 zfs_prop_is_group(unsigned p)
2511 {
2512         return (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA ||
2513             p == ZFS_PROP_GROUPOBJUSED || p == ZFS_PROP_GROUPOBJQUOTA);
2514 }
2515
2516 static boolean_t
2517 zfs_prop_is_project(unsigned p)
2518 {
2519         return (p == ZFS_PROP_PROJECTUSED || p == ZFS_PROP_PROJECTQUOTA ||
2520             p == ZFS_PROP_PROJECTOBJUSED || p == ZFS_PROP_PROJECTOBJQUOTA);
2521 }
2522
2523 static inline const char *
2524 us_type2str(unsigned field_type)
2525 {
2526         switch (field_type) {
2527         case USTYPE_PSX_USR:
2528                 return ("POSIX User");
2529         case USTYPE_PSX_GRP:
2530                 return ("POSIX Group");
2531         case USTYPE_SMB_USR:
2532                 return ("SMB User");
2533         case USTYPE_SMB_GRP:
2534                 return ("SMB Group");
2535         case USTYPE_PROJ:
2536                 return ("Project");
2537         default:
2538                 return ("Undefined");
2539         }
2540 }
2541
2542 static int
2543 userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
2544 {
2545         us_cbdata_t *cb = (us_cbdata_t *)arg;
2546         zfs_userquota_prop_t prop = cb->cb_prop;
2547         char *name = NULL;
2548         char *propname;
2549         char sizebuf[32];
2550         us_node_t *node;
2551         uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
2552         uu_avl_t *avl = cb->cb_avl;
2553         uu_avl_index_t idx;
2554         nvlist_t *props;
2555         us_node_t *n;
2556         zfs_sort_column_t *sortcol = cb->cb_sortcol;
2557         unsigned type = 0;
2558         const char *typestr;
2559         size_t namelen;
2560         size_t typelen;
2561         size_t sizelen;
2562         int typeidx, nameidx, sizeidx;
2563         us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
2564         boolean_t smbentity = B_FALSE;
2565
2566         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
2567                 nomem();
2568         node = safe_malloc(sizeof (us_node_t));
2569         uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
2570         node->usn_nvl = props;
2571
2572         if (domain != NULL && domain[0] != '\0') {
2573 #ifdef HAVE_IDMAP
2574                 /* SMB */
2575                 char sid[MAXNAMELEN + 32];
2576                 uid_t id;
2577                 uint64_t classes;
2578                 int err;
2579                 directory_error_t e;
2580
2581                 smbentity = B_TRUE;
2582
2583                 (void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
2584
2585                 if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
2586                         type = USTYPE_SMB_GRP;
2587                         err = sid_to_id(sid, B_FALSE, &id);
2588                 } else {
2589                         type = USTYPE_SMB_USR;
2590                         err = sid_to_id(sid, B_TRUE, &id);
2591                 }
2592
2593                 if (err == 0) {
2594                         rid = id;
2595                         if (!cb->cb_sid2posix) {
2596                                 e = directory_name_from_sid(NULL, sid, &name,
2597                                     &classes);
2598                                 if (e != NULL)
2599                                         directory_error_free(e);
2600                                 if (name == NULL)
2601                                         name = sid;
2602                         }
2603                 }
2604 #else
2605                 nvlist_free(props);
2606                 free(node);
2607
2608                 return (-1);
2609 #endif /* HAVE_IDMAP */
2610         }
2611
2612         if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
2613                 /* POSIX or -i */
2614                 if (zfs_prop_is_group(prop)) {
2615                         type = USTYPE_PSX_GRP;
2616                         if (!cb->cb_numname) {
2617                                 struct group *g;
2618
2619                                 if ((g = getgrgid(rid)) != NULL)
2620                                         name = g->gr_name;
2621                         }
2622                 } else if (zfs_prop_is_user(prop)) {
2623                         type = USTYPE_PSX_USR;
2624                         if (!cb->cb_numname) {
2625                                 struct passwd *p;
2626
2627                                 if ((p = getpwuid(rid)) != NULL)
2628                                         name = p->pw_name;
2629                         }
2630                 } else {
2631                         type = USTYPE_PROJ;
2632                 }
2633         }
2634
2635         /*
2636          * Make sure that the type/name combination is unique when doing
2637          * SID to POSIX ID translation (hence changing the type from SMB to
2638          * POSIX).
2639          */
2640         if (cb->cb_sid2posix &&
2641             nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
2642                 nomem();
2643
2644         /* Calculate/update width of TYPE field */
2645         typestr = us_type2str(type);
2646         typelen = strlen(gettext(typestr));
2647         typeidx = us_field_index("type");
2648         if (typelen > cb->cb_width[typeidx])
2649                 cb->cb_width[typeidx] = typelen;
2650         if (nvlist_add_uint32(props, "type", type) != 0)
2651                 nomem();
2652
2653         /* Calculate/update width of NAME field */
2654         if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
2655                 if (nvlist_add_uint64(props, "name", rid) != 0)
2656                         nomem();
2657                 namelen = snprintf(NULL, 0, "%u", rid);
2658         } else {
2659                 if (nvlist_add_string(props, "name", name) != 0)
2660                         nomem();
2661                 namelen = strlen(name);
2662         }
2663         nameidx = us_field_index("name");
2664         if (nameidx >= 0 && namelen > cb->cb_width[nameidx])
2665                 cb->cb_width[nameidx] = namelen;
2666
2667         /*
2668          * Check if this type/name combination is in the list and update it;
2669          * otherwise add new node to the list.
2670          */
2671         if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
2672                 uu_avl_insert(avl, node, idx);
2673         } else {
2674                 nvlist_free(props);
2675                 free(node);
2676                 node = n;
2677                 props = node->usn_nvl;
2678         }
2679
2680         /* Calculate/update width of USED/QUOTA fields */
2681         if (cb->cb_nicenum) {
2682                 if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
2683                     prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA ||
2684                     prop == ZFS_PROP_PROJECTUSED ||
2685                     prop == ZFS_PROP_PROJECTQUOTA) {
2686                         zfs_nicebytes(space, sizebuf, sizeof (sizebuf));
2687                 } else {
2688                         zfs_nicenum(space, sizebuf, sizeof (sizebuf));
2689                 }
2690         } else {
2691                 (void) snprintf(sizebuf, sizeof (sizebuf), "%llu",
2692                     (u_longlong_t)space);
2693         }
2694         sizelen = strlen(sizebuf);
2695         if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
2696             prop == ZFS_PROP_PROJECTUSED) {
2697                 propname = "used";
2698                 if (!nvlist_exists(props, "quota"))
2699                         (void) nvlist_add_uint64(props, "quota", 0);
2700         } else if (prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA ||
2701             prop == ZFS_PROP_PROJECTQUOTA) {
2702                 propname = "quota";
2703                 if (!nvlist_exists(props, "used"))
2704                         (void) nvlist_add_uint64(props, "used", 0);
2705         } else if (prop == ZFS_PROP_USEROBJUSED ||
2706             prop == ZFS_PROP_GROUPOBJUSED || prop == ZFS_PROP_PROJECTOBJUSED) {
2707                 propname = "objused";
2708                 if (!nvlist_exists(props, "objquota"))
2709                         (void) nvlist_add_uint64(props, "objquota", 0);
2710         } else if (prop == ZFS_PROP_USEROBJQUOTA ||
2711             prop == ZFS_PROP_GROUPOBJQUOTA ||
2712             prop == ZFS_PROP_PROJECTOBJQUOTA) {
2713                 propname = "objquota";
2714                 if (!nvlist_exists(props, "objused"))
2715                         (void) nvlist_add_uint64(props, "objused", 0);
2716         } else {
2717                 return (-1);
2718         }
2719         sizeidx = us_field_index(propname);
2720         if (sizeidx >= 0 && sizelen > cb->cb_width[sizeidx])
2721                 cb->cb_width[sizeidx] = sizelen;
2722
2723         if (nvlist_add_uint64(props, propname, space) != 0)
2724                 nomem();
2725
2726         return (0);
2727 }
2728
2729 static void
2730 print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
2731     size_t *width, us_node_t *node)
2732 {
2733         nvlist_t *nvl = node->usn_nvl;
2734         char valstr[MAXNAMELEN];
2735         boolean_t first = B_TRUE;
2736         int cfield = 0;
2737         int field;
2738         uint32_t ustype;
2739
2740         /* Check type */
2741         (void) nvlist_lookup_uint32(nvl, "type", &ustype);
2742         if (!(ustype & types))
2743                 return;
2744
2745         while ((field = fields[cfield]) != USFIELD_LAST) {
2746                 nvpair_t *nvp = NULL;
2747                 data_type_t type;
2748                 uint32_t val32;
2749                 uint64_t val64;
2750                 char *strval = "-";
2751
2752                 while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
2753                         if (strcmp(nvpair_name(nvp),
2754                             us_field_names[field]) == 0)
2755                                 break;
2756                 }
2757
2758                 type = nvp == NULL ? DATA_TYPE_UNKNOWN : nvpair_type(nvp);
2759                 switch (type) {
2760                 case DATA_TYPE_UINT32:
2761                         (void) nvpair_value_uint32(nvp, &val32);
2762                         break;
2763                 case DATA_TYPE_UINT64:
2764                         (void) nvpair_value_uint64(nvp, &val64);
2765                         break;
2766                 case DATA_TYPE_STRING:
2767                         (void) nvpair_value_string(nvp, &strval);
2768                         break;
2769                 case DATA_TYPE_UNKNOWN:
2770                         break;
2771                 default:
2772                         (void) fprintf(stderr, "invalid data type\n");
2773                 }
2774
2775                 switch (field) {
2776                 case USFIELD_TYPE:
2777                         if (type == DATA_TYPE_UINT32)
2778                                 strval = (char *)us_type2str(val32);
2779                         break;
2780                 case USFIELD_NAME:
2781                         if (type == DATA_TYPE_UINT64) {
2782                                 (void) sprintf(valstr, "%llu",
2783                                     (u_longlong_t)val64);
2784                                 strval = valstr;
2785                         }
2786                         break;
2787                 case USFIELD_USED:
2788                 case USFIELD_QUOTA:
2789                         if (type == DATA_TYPE_UINT64) {
2790                                 if (parsable) {
2791                                         (void) sprintf(valstr, "%llu",
2792                                             (u_longlong_t)val64);
2793                                         strval = valstr;
2794                                 } else if (field == USFIELD_QUOTA &&
2795                                     val64 == 0) {
2796                                         strval = "none";
2797                                 } else {
2798                                         zfs_nicebytes(val64, valstr,
2799                                             sizeof (valstr));
2800                                         strval = valstr;
2801                                 }
2802                         }
2803                         break;
2804                 case USFIELD_OBJUSED:
2805                 case USFIELD_OBJQUOTA:
2806                         if (type == DATA_TYPE_UINT64) {
2807                                 if (parsable) {
2808                                         (void) sprintf(valstr, "%llu",
2809                                             (u_longlong_t)val64);
2810                                         strval = valstr;
2811                                 } else if (field == USFIELD_OBJQUOTA &&
2812                                     val64 == 0) {
2813                                         strval = "none";
2814                                 } else {
2815                                         zfs_nicenum(val64, valstr,
2816                                             sizeof (valstr));
2817                                         strval = valstr;
2818                                 }
2819                         }
2820                         break;
2821                 }
2822
2823                 if (!first) {
2824                         if (scripted)
2825                                 (void) printf("\t");
2826                         else
2827                                 (void) printf("  ");
2828                 }
2829                 if (scripted)
2830                         (void) printf("%s", strval);
2831                 else if (field == USFIELD_TYPE || field == USFIELD_NAME)
2832                         (void) printf("%-*s", (int)width[field], strval);
2833                 else
2834                         (void) printf("%*s", (int)width[field], strval);
2835
2836                 first = B_FALSE;
2837                 cfield++;
2838         }
2839
2840         (void) printf("\n");
2841 }
2842
2843 static void
2844 print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
2845     size_t *width, boolean_t rmnode, uu_avl_t *avl)
2846 {
2847         us_node_t *node;
2848         const char *col;
2849         int cfield = 0;
2850         int field;
2851
2852         if (!scripted) {
2853                 boolean_t first = B_TRUE;
2854
2855                 while ((field = fields[cfield]) != USFIELD_LAST) {
2856                         col = gettext(us_field_hdr[field]);
2857                         if (field == USFIELD_TYPE || field == USFIELD_NAME) {
2858                                 (void) printf(first ? "%-*s" : "  %-*s",
2859                                     (int)width[field], col);
2860                         } else {
2861                                 (void) printf(first ? "%*s" : "  %*s",
2862                                     (int)width[field], col);
2863                         }
2864                         first = B_FALSE;
2865                         cfield++;
2866                 }
2867                 (void) printf("\n");
2868         }
2869
2870         for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
2871                 print_us_node(scripted, parsable, fields, types, width, node);
2872                 if (rmnode)
2873                         nvlist_free(node->usn_nvl);
2874         }
2875 }
2876
2877 static int
2878 zfs_do_userspace(int argc, char **argv)
2879 {
2880         zfs_handle_t *zhp;
2881         zfs_userquota_prop_t p;
2882         uu_avl_pool_t *avl_pool;
2883         uu_avl_t *avl_tree;
2884         uu_avl_walk_t *walk;
2885         char *delim;
2886         char deffields[] = "type,name,used,quota,objused,objquota";
2887         char *ofield = NULL;
2888         char *tfield = NULL;
2889         int cfield = 0;
2890         int fields[256];
2891         int i;
2892         boolean_t scripted = B_FALSE;
2893         boolean_t prtnum = B_FALSE;
2894         boolean_t parsable = B_FALSE;
2895         boolean_t sid2posix = B_FALSE;
2896         int ret = 0;
2897         int c;
2898         zfs_sort_column_t *sortcol = NULL;
2899         int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
2900         us_cbdata_t cb;
2901         us_node_t *node;
2902         us_node_t *rmnode;
2903         uu_list_pool_t *listpool;
2904         uu_list_t *list;
2905         uu_avl_index_t idx = 0;
2906         uu_list_index_t idx2 = 0;
2907
2908         if (argc < 2)
2909                 usage(B_FALSE);
2910
2911         if (strcmp(argv[0], "groupspace") == 0) {
2912                 /* Toggle default group types */
2913                 types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
2914         } else if (strcmp(argv[0], "projectspace") == 0) {
2915                 types = USTYPE_PROJ;
2916                 prtnum = B_TRUE;
2917         }
2918
2919         while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
2920                 switch (c) {
2921                 case 'n':
2922                         if (types == USTYPE_PROJ) {
2923                                 (void) fprintf(stderr,
2924                                     gettext("invalid option 'n'\n"));
2925                                 usage(B_FALSE);
2926                         }
2927                         prtnum = B_TRUE;
2928                         break;
2929                 case 'H':
2930                         scripted = B_TRUE;
2931                         break;
2932                 case 'p':
2933                         parsable = B_TRUE;
2934                         break;
2935                 case 'o':
2936                         ofield = optarg;
2937                         break;
2938                 case 's':
2939                 case 'S':
2940                         if (zfs_add_sort_column(&sortcol, optarg,
2941                             c == 's' ? B_FALSE : B_TRUE) != 0) {
2942                                 (void) fprintf(stderr,
2943                                     gettext("invalid field '%s'\n"), optarg);
2944                                 usage(B_FALSE);
2945                         }
2946                         break;
2947                 case 't':
2948                         if (types == USTYPE_PROJ) {
2949                                 (void) fprintf(stderr,
2950                                     gettext("invalid option 't'\n"));
2951                                 usage(B_FALSE);
2952                         }
2953                         tfield = optarg;
2954                         break;
2955                 case 'i':
2956                         if (types == USTYPE_PROJ) {
2957                                 (void) fprintf(stderr,
2958                                     gettext("invalid option 'i'\n"));
2959                                 usage(B_FALSE);
2960                         }
2961                         sid2posix = B_TRUE;
2962                         break;
2963                 case ':':
2964                         (void) fprintf(stderr, gettext("missing argument for "
2965                             "'%c' option\n"), optopt);
2966                         usage(B_FALSE);
2967                         break;
2968                 case '?':
2969                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
2970                             optopt);
2971                         usage(B_FALSE);
2972                 }
2973         }
2974
2975         argc -= optind;
2976         argv += optind;
2977
2978         if (argc < 1) {
2979                 (void) fprintf(stderr, gettext("missing dataset name\n"));
2980                 usage(B_FALSE);
2981         }
2982         if (argc > 1) {
2983                 (void) fprintf(stderr, gettext("too many arguments\n"));
2984                 usage(B_FALSE);
2985         }
2986
2987         /* Use default output fields if not specified using -o */
2988         if (ofield == NULL)
2989                 ofield = deffields;
2990         do {
2991                 if ((delim = strchr(ofield, ',')) != NULL)
2992                         *delim = '\0';
2993                 if ((fields[cfield++] = us_field_index(ofield)) == -1) {
2994                         (void) fprintf(stderr, gettext("invalid type '%s' "
2995                             "for -o option\n"), ofield);
2996                         return (-1);
2997                 }
2998                 if (delim != NULL)
2999                         ofield = delim + 1;
3000         } while (delim != NULL);
3001         fields[cfield] = USFIELD_LAST;
3002
3003         /* Override output types (-t option) */
3004         if (tfield != NULL) {
3005                 types = 0;
3006
3007                 do {
3008                         boolean_t found = B_FALSE;
3009
3010                         if ((delim = strchr(tfield, ',')) != NULL)
3011                                 *delim = '\0';
3012                         for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
3013                             i++) {
3014                                 if (strcmp(tfield, us_type_names[i]) == 0) {
3015                                         found = B_TRUE;
3016                                         types |= us_type_bits[i];
3017                                         break;
3018                                 }
3019                         }
3020                         if (!found) {
3021                                 (void) fprintf(stderr, gettext("invalid type "
3022                                     "'%s' for -t option\n"), tfield);
3023                                 return (-1);
3024                         }
3025                         if (delim != NULL)
3026                                 tfield = delim + 1;
3027                 } while (delim != NULL);
3028         }
3029
3030         if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET)) == NULL)
3031                 return (1);
3032
3033         if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
3034             offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
3035                 nomem();
3036         if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
3037                 nomem();
3038
3039         /* Always add default sorting columns */
3040         (void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
3041         (void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
3042
3043         cb.cb_sortcol = sortcol;
3044         cb.cb_numname = prtnum;
3045         cb.cb_nicenum = !parsable;
3046         cb.cb_avl_pool = avl_pool;
3047         cb.cb_avl = avl_tree;
3048         cb.cb_sid2posix = sid2posix;
3049
3050         for (i = 0; i < USFIELD_LAST; i++)
3051                 cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
3052
3053         for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
3054                 if ((zfs_prop_is_user(p) &&
3055                     !(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
3056                     (zfs_prop_is_group(p) &&
3057                     !(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))) ||
3058                     (zfs_prop_is_project(p) && types != USTYPE_PROJ))
3059                         continue;
3060
3061                 cb.cb_prop = p;
3062                 if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0)
3063                         return (ret);
3064         }
3065
3066         /* Sort the list */
3067         if ((node = uu_avl_first(avl_tree)) == NULL)
3068                 return (0);
3069
3070         us_populated = B_TRUE;
3071
3072         listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
3073             offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
3074         list = uu_list_create(listpool, NULL, UU_DEFAULT);
3075         uu_list_node_init(node, &node->usn_listnode, listpool);
3076
3077         while (node != NULL) {
3078                 rmnode = node;
3079                 node = uu_avl_next(avl_tree, node);
3080                 uu_avl_remove(avl_tree, rmnode);
3081                 if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
3082                         uu_list_insert(list, rmnode, idx2);
3083         }
3084
3085         for (node = uu_list_first(list); node != NULL;
3086             node = uu_list_next(list, node)) {
3087                 us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
3088
3089                 if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
3090                         uu_avl_insert(avl_tree, node, idx);
3091         }
3092
3093         uu_list_destroy(list);
3094         uu_list_pool_destroy(listpool);
3095
3096         /* Print and free node nvlist memory */
3097         print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
3098             cb.cb_avl);
3099
3100         zfs_free_sort_columns(sortcol);
3101
3102         /* Clean up the AVL tree */
3103         if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
3104                 nomem();
3105
3106         while ((node = uu_avl_walk_next(walk)) != NULL) {
3107                 uu_avl_remove(cb.cb_avl, node);
3108                 free(node);
3109         }
3110
3111         uu_avl_walk_end(walk);
3112         uu_avl_destroy(avl_tree);
3113         uu_avl_pool_destroy(avl_pool);
3114
3115         return (ret);
3116 }
3117
3118 /*
3119  * list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property]
3120  *      [-t type[,...]] [filesystem|volume|snapshot] ...
3121  *
3122  *      -H      Scripted mode; elide headers and separate columns by tabs
3123  *      -p      Display values in parsable (literal) format.
3124  *      -r      Recurse over all children
3125  *      -d      Limit recursion by depth.
3126  *      -o      Control which fields to display.
3127  *      -s      Specify sort columns, descending order.
3128  *      -S      Specify sort columns, ascending order.
3129  *      -t      Control which object types to display.
3130  *
3131  * When given no arguments, list all filesystems in the system.
3132  * Otherwise, list the specified datasets, optionally recursing down them if
3133  * '-r' is specified.
3134  */
3135 typedef struct list_cbdata {
3136         boolean_t       cb_first;
3137         boolean_t       cb_literal;
3138         boolean_t       cb_scripted;
3139         zprop_list_t    *cb_proplist;
3140 } list_cbdata_t;
3141
3142 /*
3143  * Given a list of columns to display, output appropriate headers for each one.
3144  */
3145 static void
3146 print_header(list_cbdata_t *cb)
3147 {
3148         zprop_list_t *pl = cb->cb_proplist;
3149         char headerbuf[ZFS_MAXPROPLEN];
3150         const char *header;
3151         int i;
3152         boolean_t first = B_TRUE;
3153         boolean_t right_justify;
3154
3155         for (; pl != NULL; pl = pl->pl_next) {
3156                 if (!first) {
3157                         (void) printf("  ");
3158                 } else {
3159                         first = B_FALSE;
3160                 }
3161
3162                 right_justify = B_FALSE;
3163                 if (pl->pl_prop != ZPROP_INVAL) {
3164                         header = zfs_prop_column_name(pl->pl_prop);
3165                         right_justify = zfs_prop_align_right(pl->pl_prop);
3166                 } else {
3167                         for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
3168                                 headerbuf[i] = toupper(pl->pl_user_prop[i]);
3169                         headerbuf[i] = '\0';
3170                         header = headerbuf;
3171                 }
3172
3173                 if (pl->pl_next == NULL && !right_justify)
3174                         (void) printf("%s", header);
3175                 else if (right_justify)
3176                         (void) printf("%*s", (int)pl->pl_width, header);
3177                 else
3178                         (void) printf("%-*s", (int)pl->pl_width, header);
3179         }
3180
3181         (void) printf("\n");
3182 }
3183
3184 /*
3185  * Given a dataset and a list of fields, print out all the properties according
3186  * to the described layout.
3187  */
3188 static void
3189 print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
3190 {
3191         zprop_list_t *pl = cb->cb_proplist;
3192         boolean_t first = B_TRUE;
3193         char property[ZFS_MAXPROPLEN];
3194         nvlist_t *userprops = zfs_get_user_props(zhp);
3195         nvlist_t *propval;
3196         char *propstr;
3197         boolean_t right_justify;
3198
3199         for (; pl != NULL; pl = pl->pl_next) {
3200                 if (!first) {
3201                         if (cb->cb_scripted)
3202                                 (void) printf("\t");
3203                         else
3204                                 (void) printf("  ");
3205                 } else {
3206                         first = B_FALSE;
3207                 }
3208
3209                 if (pl->pl_prop == ZFS_PROP_NAME) {
3210                         (void) strlcpy(property, zfs_get_name(zhp),
3211                             sizeof (property));
3212                         propstr = property;
3213                         right_justify = zfs_prop_align_right(pl->pl_prop);
3214                 } else if (pl->pl_prop != ZPROP_INVAL) {
3215                         if (zfs_prop_get(zhp, pl->pl_prop, property,
3216                             sizeof (property), NULL, NULL, 0,
3217                             cb->cb_literal) != 0)
3218                                 propstr = "-";
3219                         else
3220                                 propstr = property;
3221                         right_justify = zfs_prop_align_right(pl->pl_prop);
3222                 } else if (zfs_prop_userquota(pl->pl_user_prop)) {
3223                         if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
3224                             property, sizeof (property), cb->cb_literal) != 0)
3225                                 propstr = "-";
3226                         else
3227                                 propstr = property;
3228                         right_justify = B_TRUE;
3229                 } else if (zfs_prop_written(pl->pl_user_prop)) {
3230                         if (zfs_prop_get_written(zhp, pl->pl_user_prop,
3231                             property, sizeof (property), cb->cb_literal) != 0)
3232                                 propstr = "-";
3233                         else
3234                                 propstr = property;
3235                         right_justify = B_TRUE;
3236                 } else {
3237                         if (nvlist_lookup_nvlist(userprops,
3238                             pl->pl_user_prop, &propval) != 0)
3239                                 propstr = "-";
3240                         else
3241                                 verify(nvlist_lookup_string(propval,
3242                                     ZPROP_VALUE, &propstr) == 0);
3243                         right_justify = B_FALSE;
3244                 }
3245
3246                 /*
3247                  * If this is being called in scripted mode, or if this is the
3248                  * last column and it is left-justified, don't include a width
3249                  * format specifier.
3250                  */
3251                 if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
3252                         (void) printf("%s", propstr);
3253                 else if (right_justify)
3254                         (void) printf("%*s", (int)pl->pl_width, propstr);
3255                 else
3256                         (void) printf("%-*s", (int)pl->pl_width, propstr);
3257         }
3258
3259         (void) printf("\n");
3260 }
3261
3262 /*
3263  * Generic callback function to list a dataset or snapshot.
3264  */
3265 static int
3266 list_callback(zfs_handle_t *zhp, void *data)
3267 {
3268         list_cbdata_t *cbp = data;
3269
3270         if (cbp->cb_first) {
3271                 if (!cbp->cb_scripted)
3272                         print_header(cbp);
3273                 cbp->cb_first = B_FALSE;
3274         }
3275
3276         print_dataset(zhp, cbp);
3277
3278         return (0);
3279 }
3280
3281 static int
3282 zfs_do_list(int argc, char **argv)
3283 {
3284         int c;
3285         static char default_fields[] =
3286             "name,used,available,referenced,mountpoint";
3287         int types = ZFS_TYPE_DATASET;
3288         boolean_t types_specified = B_FALSE;
3289         char *fields = NULL;
3290         list_cbdata_t cb = { 0 };
3291         char *value;
3292         int limit = 0;
3293         int ret = 0;
3294         zfs_sort_column_t *sortcol = NULL;
3295         int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
3296
3297         /* check options */
3298         while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
3299                 switch (c) {
3300                 case 'o':
3301                         fields = optarg;
3302                         break;
3303                 case 'p':
3304                         cb.cb_literal = B_TRUE;
3305                         flags |= ZFS_ITER_LITERAL_PROPS;
3306                         break;
3307                 case 'd':
3308                         limit = parse_depth(optarg, &flags);
3309                         break;
3310                 case 'r':
3311                         flags |= ZFS_ITER_RECURSE;
3312                         break;
3313                 case 'H':
3314                         cb.cb_scripted = B_TRUE;
3315                         break;
3316                 case 's':
3317                         if (zfs_add_sort_column(&sortcol, optarg,
3318                             B_FALSE) != 0) {
3319                                 (void) fprintf(stderr,
3320                                     gettext("invalid property '%s'\n"), optarg);
3321                                 usage(B_FALSE);
3322                         }
3323                         break;
3324                 case 'S':
3325                         if (zfs_add_sort_column(&sortcol, optarg,
3326                             B_TRUE) != 0) {
3327                                 (void) fprintf(stderr,
3328                                     gettext("invalid property '%s'\n"), optarg);
3329                                 usage(B_FALSE);
3330                         }
3331                         break;
3332                 case 't':
3333                         types = 0;
3334                         types_specified = B_TRUE;
3335                         flags &= ~ZFS_ITER_PROP_LISTSNAPS;
3336                         while (*optarg != '\0') {
3337                                 static char *type_subopts[] = { "filesystem",
3338                                     "volume", "snapshot", "snap", "bookmark",
3339                                     "all", NULL };
3340
3341                                 switch (getsubopt(&optarg, type_subopts,
3342                                     &value)) {
3343                                 case 0:
3344                                         types |= ZFS_TYPE_FILESYSTEM;
3345                                         break;
3346                                 case 1:
3347                                         types |= ZFS_TYPE_VOLUME;
3348                                         break;
3349                                 case 2:
3350                                 case 3:
3351                                         types |= ZFS_TYPE_SNAPSHOT;
3352                                         break;
3353                                 case 4:
3354                                         types |= ZFS_TYPE_BOOKMARK;
3355                                         break;
3356                                 case 5:
3357                                         types = ZFS_TYPE_DATASET |
3358                                             ZFS_TYPE_BOOKMARK;
3359                                         break;
3360                                 default:
3361                                         (void) fprintf(stderr,
3362                                             gettext("invalid type '%s'\n"),
3363                                             value);
3364                                         usage(B_FALSE);
3365                                 }
3366                         }
3367                         break;
3368                 case ':':
3369                         (void) fprintf(stderr, gettext("missing argument for "
3370                             "'%c' option\n"), optopt);
3371                         usage(B_FALSE);
3372                         break;
3373                 case '?':
3374                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3375                             optopt);
3376                         usage(B_FALSE);
3377                 }
3378         }
3379
3380         argc -= optind;
3381         argv += optind;
3382
3383         if (fields == NULL)
3384                 fields = default_fields;
3385
3386         /*
3387          * If we are only going to list snapshot names and sort by name,
3388          * then we can use faster version.
3389          */
3390         if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
3391                 flags |= ZFS_ITER_SIMPLE;
3392
3393         /*
3394          * If "-o space" and no types were specified, don't display snapshots.
3395          */
3396         if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
3397                 types &= ~ZFS_TYPE_SNAPSHOT;
3398
3399         /*
3400          * If the user specifies '-o all', the zprop_get_list() doesn't
3401          * normally include the name of the dataset.  For 'zfs list', we always
3402          * want this property to be first.
3403          */
3404         if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
3405             != 0)
3406                 usage(B_FALSE);
3407
3408         cb.cb_first = B_TRUE;
3409
3410         ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
3411             limit, list_callback, &cb);
3412
3413         zprop_free_list(cb.cb_proplist);
3414         zfs_free_sort_columns(sortcol);
3415
3416         if (ret == 0 && cb.cb_first && !cb.cb_scripted)
3417                 (void) fprintf(stderr, gettext("no datasets available\n"));
3418
3419         return (ret);
3420 }
3421
3422 /*
3423  * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
3424  * zfs rename [-f] -p <fs | vol> <fs | vol>
3425  * zfs rename -r <snap> <snap>
3426  *
3427  * Renames the given dataset to another of the same type.
3428  *
3429  * The '-p' flag creates all the non-existing ancestors of the target first.
3430  */
3431 /* ARGSUSED */
3432 static int
3433 zfs_do_rename(int argc, char **argv)
3434 {
3435         zfs_handle_t *zhp;
3436         int c;
3437         int ret = 0;
3438         boolean_t recurse = B_FALSE;
3439         boolean_t parents = B_FALSE;
3440         boolean_t force_unmount = B_FALSE;
3441
3442         /* check options */
3443         while ((c = getopt(argc, argv, "prf")) != -1) {
3444                 switch (c) {
3445                 case 'p':
3446                         parents = B_TRUE;
3447                         break;
3448                 case 'r':
3449                         recurse = B_TRUE;
3450                         break;
3451                 case 'f':
3452                         force_unmount = B_TRUE;
3453                         break;
3454                 case '?':
3455                 default:
3456                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3457                             optopt);
3458                         usage(B_FALSE);
3459                 }
3460         }
3461
3462         argc -= optind;
3463         argv += optind;
3464
3465         /* check number of arguments */
3466         if (argc < 1) {
3467                 (void) fprintf(stderr, gettext("missing source dataset "
3468                     "argument\n"));
3469                 usage(B_FALSE);
3470         }
3471         if (argc < 2) {
3472                 (void) fprintf(stderr, gettext("missing target dataset "
3473                     "argument\n"));
3474                 usage(B_FALSE);
3475         }
3476         if (argc > 2) {
3477                 (void) fprintf(stderr, gettext("too many arguments\n"));
3478                 usage(B_FALSE);
3479         }
3480
3481         if (recurse && parents) {
3482                 (void) fprintf(stderr, gettext("-p and -r options are mutually "
3483                     "exclusive\n"));
3484                 usage(B_FALSE);
3485         }
3486
3487         if (recurse && strchr(argv[0], '@') == 0) {
3488                 (void) fprintf(stderr, gettext("source dataset for recursive "
3489                     "rename must be a snapshot\n"));
3490                 usage(B_FALSE);
3491         }
3492
3493         if ((zhp = zfs_open(g_zfs, argv[0], parents ? ZFS_TYPE_FILESYSTEM |
3494             ZFS_TYPE_VOLUME : ZFS_TYPE_DATASET)) == NULL)
3495                 return (1);
3496
3497         /* If we were asked and the name looks good, try to create ancestors. */
3498         if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
3499             zfs_create_ancestors(g_zfs, argv[1]) != 0) {
3500                 zfs_close(zhp);
3501                 return (1);
3502         }
3503
3504         ret = (zfs_rename(zhp, argv[1], recurse, force_unmount) != 0);
3505
3506         zfs_close(zhp);
3507         return (ret);
3508 }
3509
3510 /*
3511  * zfs promote <fs>
3512  *
3513  * Promotes the given clone fs to be the parent
3514  */
3515 /* ARGSUSED */
3516 static int
3517 zfs_do_promote(int argc, char **argv)
3518 {
3519         zfs_handle_t *zhp;
3520         int ret = 0;
3521
3522         /* check options */
3523         if (argc > 1 && argv[1][0] == '-') {
3524                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3525                     argv[1][1]);
3526                 usage(B_FALSE);
3527         }
3528
3529         /* check number of arguments */
3530         if (argc < 2) {
3531                 (void) fprintf(stderr, gettext("missing clone filesystem"
3532                     " argument\n"));
3533                 usage(B_FALSE);
3534         }
3535         if (argc > 2) {
3536                 (void) fprintf(stderr, gettext("too many arguments\n"));
3537                 usage(B_FALSE);
3538         }
3539
3540         zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3541         if (zhp == NULL)
3542                 return (1);
3543
3544         ret = (zfs_promote(zhp) != 0);
3545
3546
3547         zfs_close(zhp);
3548         return (ret);
3549 }
3550
3551 /*
3552  * zfs rollback [-rRf] <snapshot>
3553  *
3554  *      -r      Delete any intervening snapshots before doing rollback
3555  *      -R      Delete any snapshots and their clones
3556  *      -f      ignored for backwards compatibility
3557  *
3558  * Given a filesystem, rollback to a specific snapshot, discarding any changes
3559  * since then and making it the active dataset.  If more recent snapshots exist,
3560  * the command will complain unless the '-r' flag is given.
3561  */
3562 typedef struct rollback_cbdata {
3563         uint64_t        cb_create;
3564         boolean_t       cb_first;
3565         int             cb_doclones;
3566         char            *cb_target;
3567         int             cb_error;
3568         boolean_t       cb_recurse;
3569 } rollback_cbdata_t;
3570
3571 static int
3572 rollback_check_dependent(zfs_handle_t *zhp, void *data)
3573 {
3574         rollback_cbdata_t *cbp = data;
3575
3576         if (cbp->cb_first && cbp->cb_recurse) {
3577                 (void) fprintf(stderr, gettext("cannot rollback to "
3578                     "'%s': clones of previous snapshots exist\n"),
3579                     cbp->cb_target);
3580                 (void) fprintf(stderr, gettext("use '-R' to "
3581                     "force deletion of the following clones and "
3582                     "dependents:\n"));
3583                 cbp->cb_first = 0;
3584                 cbp->cb_error = 1;
3585         }
3586
3587         (void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
3588
3589         zfs_close(zhp);
3590         return (0);
3591 }
3592
3593
3594 /*
3595  * Report any snapshots more recent than the one specified.  Used when '-r' is
3596  * not specified.  We reuse this same callback for the snapshot dependents - if
3597  * 'cb_dependent' is set, then this is a dependent and we should report it
3598  * without checking the transaction group.
3599  */
3600 static int
3601 rollback_check(zfs_handle_t *zhp, void *data)
3602 {
3603         rollback_cbdata_t *cbp = data;
3604
3605         if (cbp->cb_doclones) {
3606                 zfs_close(zhp);
3607                 return (0);
3608         }
3609
3610         if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
3611                 if (cbp->cb_first && !cbp->cb_recurse) {
3612                         (void) fprintf(stderr, gettext("cannot "
3613                             "rollback to '%s': more recent snapshots "
3614                             "or bookmarks exist\n"),
3615                             cbp->cb_target);
3616                         (void) fprintf(stderr, gettext("use '-r' to "
3617                             "force deletion of the following "
3618                             "snapshots and bookmarks:\n"));
3619                         cbp->cb_first = 0;
3620                         cbp->cb_error = 1;
3621                 }
3622
3623                 if (cbp->cb_recurse) {
3624                         if (zfs_iter_dependents(zhp, B_TRUE,
3625                             rollback_check_dependent, cbp) != 0) {
3626                                 zfs_close(zhp);
3627                                 return (-1);
3628                         }
3629                 } else {
3630                         (void) fprintf(stderr, "%s\n",
3631                             zfs_get_name(zhp));
3632                 }
3633         }
3634         zfs_close(zhp);
3635         return (0);
3636 }
3637
3638 static int
3639 zfs_do_rollback(int argc, char **argv)
3640 {
3641         int ret = 0;
3642         int c;
3643         boolean_t force = B_FALSE;
3644         rollback_cbdata_t cb = { 0 };
3645         zfs_handle_t *zhp, *snap;
3646         char parentname[ZFS_MAX_DATASET_NAME_LEN];
3647         char *delim;
3648
3649         /* check options */
3650         while ((c = getopt(argc, argv, "rRf")) != -1) {
3651                 switch (c) {
3652                 case 'r':
3653                         cb.cb_recurse = 1;
3654                         break;
3655                 case 'R':
3656                         cb.cb_recurse = 1;
3657                         cb.cb_doclones = 1;
3658                         break;
3659                 case 'f':
3660                         force = B_TRUE;
3661                         break;
3662                 case '?':
3663                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3664                             optopt);
3665                         usage(B_FALSE);
3666                 }
3667         }
3668
3669         argc -= optind;
3670         argv += optind;
3671
3672         /* check number of arguments */
3673         if (argc < 1) {
3674                 (void) fprintf(stderr, gettext("missing dataset argument\n"));
3675                 usage(B_FALSE);
3676         }
3677         if (argc > 1) {
3678                 (void) fprintf(stderr, gettext("too many arguments\n"));
3679                 usage(B_FALSE);
3680         }
3681
3682         /* open the snapshot */
3683         if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
3684                 return (1);
3685
3686         /* open the parent dataset */
3687         (void) strlcpy(parentname, argv[0], sizeof (parentname));
3688         verify((delim = strrchr(parentname, '@')) != NULL);
3689         *delim = '\0';
3690         if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
3691                 zfs_close(snap);
3692                 return (1);
3693         }
3694
3695         /*
3696          * Check for more recent snapshots and/or clones based on the presence
3697          * of '-r' and '-R'.
3698          */
3699         cb.cb_target = argv[0];
3700         cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3701         cb.cb_first = B_TRUE;
3702         cb.cb_error = 0;
3703         if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb)) != 0)
3704                 goto out;
3705         if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
3706                 goto out;
3707
3708         if ((ret = cb.cb_error) != 0)
3709                 goto out;
3710
3711         /*
3712          * Rollback parent to the given snapshot.
3713          */
3714         ret = zfs_rollback(zhp, snap, force);
3715
3716 out:
3717         zfs_close(snap);
3718         zfs_close(zhp);
3719
3720         if (ret == 0)
3721                 return (0);
3722         else
3723                 return (1);
3724 }
3725
3726 /*
3727  * zfs set property=value ... { fs | snap | vol } ...
3728  *
3729  * Sets the given properties for all datasets specified on the command line.
3730  */
3731
3732 static int
3733 set_callback(zfs_handle_t *zhp, void *data)
3734 {
3735         nvlist_t *props = data;
3736
3737         if (zfs_prop_set_list(zhp, props) != 0) {
3738                 switch (libzfs_errno(g_zfs)) {
3739                 case EZFS_MOUNTFAILED:
3740                         (void) fprintf(stderr, gettext("property may be set "
3741                             "but unable to remount filesystem\n"));
3742                         break;
3743                 case EZFS_SHARENFSFAILED:
3744                         (void) fprintf(stderr, gettext("property may be set "
3745                             "but unable to reshare filesystem\n"));
3746                         break;
3747                 }
3748                 return (1);
3749         }
3750         return (0);
3751 }
3752
3753 static int
3754 zfs_do_set(int argc, char **argv)
3755 {
3756         nvlist_t *props = NULL;
3757         int ds_start = -1; /* argv idx of first dataset arg */
3758         int ret = 0;
3759         int i;
3760
3761         /* check for options */
3762         if (argc > 1 && argv[1][0] == '-') {
3763                 (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3764                     argv[1][1]);
3765                 usage(B_FALSE);
3766         }
3767
3768         /* check number of arguments */
3769         if (argc < 2) {
3770                 (void) fprintf(stderr, gettext("missing arguments\n"));
3771                 usage(B_FALSE);
3772         }
3773         if (argc < 3) {
3774                 if (strchr(argv[1], '=') == NULL) {
3775                         (void) fprintf(stderr, gettext("missing property=value "
3776                             "argument(s)\n"));
3777                 } else {
3778                         (void) fprintf(stderr, gettext("missing dataset "
3779                             "name(s)\n"));
3780                 }
3781                 usage(B_FALSE);
3782         }
3783
3784         /* validate argument order:  prop=val args followed by dataset args */
3785         for (i = 1; i < argc; i++) {
3786                 if (strchr(argv[i], '=') != NULL) {
3787                         if (ds_start > 0) {
3788                                 /* out-of-order prop=val argument */
3789                                 (void) fprintf(stderr, gettext("invalid "
3790                                     "argument order\n"));
3791                                 usage(B_FALSE);
3792                         }
3793                 } else if (ds_start < 0) {
3794                         ds_start = i;
3795                 }
3796         }
3797         if (ds_start < 0) {
3798                 (void) fprintf(stderr, gettext("missing dataset name(s)\n"));
3799                 usage(B_FALSE);
3800         }
3801
3802         /* Populate a list of property settings */
3803         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3804                 nomem();
3805         for (i = 1; i < ds_start; i++) {
3806                 if (!parseprop(props, argv[i])) {
3807                         ret = -1;
3808                         goto error;
3809                 }
3810         }
3811
3812         ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
3813             ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
3814
3815 error:
3816         nvlist_free(props);
3817         return (ret);
3818 }
3819
3820 typedef struct snap_cbdata {
3821         nvlist_t *sd_nvl;
3822         boolean_t sd_recursive;
3823         const char *sd_snapname;
3824 } snap_cbdata_t;
3825
3826 static int
3827 zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3828 {
3829         snap_cbdata_t *sd = arg;
3830         char *name;
3831         int rv = 0;
3832         int error;
3833
3834         if (sd->sd_recursive &&
3835             zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
3836                 zfs_close(zhp);
3837                 return (0);
3838         }
3839
3840         error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3841         if (error == -1)
3842                 nomem();
3843         fnvlist_add_boolean(sd->sd_nvl, name);
3844         free(name);
3845
3846         if (sd->sd_recursive)
3847                 rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3848         zfs_close(zhp);
3849         return (rv);
3850 }
3851
3852 /*
3853  * zfs snapshot [-r] [-o prop=value] ... <fs@snap>
3854  *
3855  * Creates a snapshot with the given name.  While functionally equivalent to
3856  * 'zfs create', it is a separate command to differentiate intent.
3857  */
3858 static int
3859 zfs_do_snapshot(int argc, char **argv)
3860 {
3861         int ret = 0;
3862         signed char c;
3863         nvlist_t *props;
3864         snap_cbdata_t sd = { 0 };
3865         boolean_t multiple_snaps = B_FALSE;
3866
3867         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
3868                 nomem();
3869         if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
3870                 nomem();
3871
3872         /* check options */
3873         while ((c = getopt(argc, argv, "ro:")) != -1) {
3874                 switch (c) {
3875                 case 'o':
3876                         if (!parseprop(props, optarg)) {
3877                                 nvlist_free(sd.sd_nvl);
3878                                 nvlist_free(props);
3879                                 return (1);
3880                         }
3881                         break;
3882                 case 'r':
3883                         sd.sd_recursive = B_TRUE;
3884                         multiple_snaps = B_TRUE;
3885                         break;
3886                 case '?':
3887                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
3888                             optopt);
3889                         goto usage;
3890                 }
3891         }
3892
3893         argc -= optind;
3894         argv += optind;
3895
3896         /* check number of arguments */
3897         if (argc < 1) {
3898                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
3899                 goto usage;
3900         }
3901
3902         if (argc > 1)
3903                 multiple_snaps = B_TRUE;
3904         for (; argc > 0; argc--, argv++) {
3905                 char *atp;
3906                 zfs_handle_t *zhp;
3907
3908                 atp = strchr(argv[0], '@');
3909                 if (atp == NULL)
3910                         goto usage;
3911                 *atp = '\0';
3912                 sd.sd_snapname = atp + 1;
3913                 zhp = zfs_open(g_zfs, argv[0],
3914                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
3915                 if (zhp == NULL)
3916                         goto usage;
3917                 if (zfs_snapshot_cb(zhp, &sd) != 0)
3918                         goto usage;
3919         }
3920
3921         ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
3922         nvlist_free(sd.sd_nvl);
3923         nvlist_free(props);
3924         if (ret != 0 && multiple_snaps)
3925                 (void) fprintf(stderr, gettext("no snapshots were created\n"));
3926         return (ret != 0);
3927
3928 usage:
3929         nvlist_free(sd.sd_nvl);
3930         nvlist_free(props);
3931         usage(B_FALSE);
3932         return (-1);
3933 }
3934
3935 /*
3936  * Send a backup stream to stdout.
3937  */
3938 static int
3939 zfs_do_send(int argc, char **argv)
3940 {
3941         char *fromname = NULL;
3942         char *toname = NULL;
3943         char *resume_token = NULL;
3944         char *cp;
3945         zfs_handle_t *zhp;
3946         sendflags_t flags = { 0 };
3947         int c, err;
3948         nvlist_t *dbgnv = NULL;
3949         boolean_t extraverbose = B_FALSE;
3950
3951         struct option long_options[] = {
3952                 {"replicate",   no_argument,            NULL, 'R'},
3953                 {"props",       no_argument,            NULL, 'p'},
3954                 {"parsable",    no_argument,            NULL, 'P'},
3955                 {"dedup",       no_argument,            NULL, 'D'},
3956                 {"verbose",     no_argument,            NULL, 'v'},
3957                 {"dryrun",      no_argument,            NULL, 'n'},
3958                 {"large-block", no_argument,            NULL, 'L'},
3959                 {"embed",       no_argument,            NULL, 'e'},
3960                 {"resume",      required_argument,      NULL, 't'},
3961                 {"compressed",  no_argument,            NULL, 'c'},
3962                 {"raw",         no_argument,            NULL, 'w'},
3963                 {"backup",      no_argument,            NULL, 'b'},
3964                 {0, 0, 0, 0}
3965         };
3966
3967         /* check options */
3968         while ((c = getopt_long(argc, argv, ":i:I:RDpvnPLet:cwb", long_options,
3969             NULL)) != -1) {
3970                 switch (c) {
3971                 case 'i':
3972                         if (fromname)
3973                                 usage(B_FALSE);
3974                         fromname = optarg;
3975                         break;
3976                 case 'I':
3977                         if (fromname)
3978                                 usage(B_FALSE);
3979                         fromname = optarg;
3980                         flags.doall = B_TRUE;
3981                         break;
3982                 case 'R':
3983                         flags.replicate = B_TRUE;
3984                         break;
3985                 case 'p':
3986                         flags.props = B_TRUE;
3987                         break;
3988                 case 'b':
3989                         flags.backup = B_TRUE;
3990                         break;
3991                 case 'P':
3992                         flags.parsable = B_TRUE;
3993                         flags.verbose = B_TRUE;
3994                         break;
3995                 case 'v':
3996                         if (flags.verbose)
3997                                 extraverbose = B_TRUE;
3998                         flags.verbose = B_TRUE;
3999                         flags.progress = B_TRUE;
4000                         break;
4001                 case 'D':
4002                         flags.dedup = B_TRUE;
4003                         break;
4004                 case 'n':
4005                         flags.dryrun = B_TRUE;
4006                         break;
4007                 case 'L':
4008                         flags.largeblock = B_TRUE;
4009                         break;
4010                 case 'e':
4011                         flags.embed_data = B_TRUE;
4012                         break;
4013                 case 't':
4014                         resume_token = optarg;
4015                         break;
4016                 case 'c':
4017                         flags.compress = B_TRUE;
4018                         break;
4019                 case 'w':
4020                         flags.raw = B_TRUE;
4021                         flags.compress = B_TRUE;
4022                         flags.embed_data = B_TRUE;
4023                         flags.largeblock = B_TRUE;
4024                         break;
4025                 case ':':
4026                         /*
4027                          * If a parameter was not passed, optopt contains the
4028                          * value that would normally lead us into the
4029                          * appropriate case statement.  If it's > 256, then this
4030                          * must be a longopt and we should look at argv to get
4031                          * the string.  Otherwise it's just the character, so we
4032                          * should use it directly.
4033                          */
4034                         if (optopt <= UINT8_MAX) {
4035                                 (void) fprintf(stderr,
4036                                     gettext("missing argument for '%c' "
4037                                     "option\n"), optopt);
4038                         } else {
4039                                 (void) fprintf(stderr,
4040                                     gettext("missing argument for '%s' "
4041                                     "option\n"), argv[optind - 1]);
4042                         }
4043                         usage(B_FALSE);
4044                         break;
4045                 case '?':
4046                         /*FALLTHROUGH*/
4047                 default:
4048                         /*
4049                          * If an invalid flag was passed, optopt contains the
4050                          * character if it was a short flag, or 0 if it was a
4051                          * longopt.
4052                          */
4053                         if (optopt != 0) {
4054                                 (void) fprintf(stderr,
4055                                     gettext("invalid option '%c'\n"), optopt);
4056                         } else {
4057                                 (void) fprintf(stderr,
4058                                     gettext("invalid option '%s'\n"),
4059                                     argv[optind - 1]);
4060
4061                         }
4062                         usage(B_FALSE);
4063                 }
4064         }
4065
4066         argc -= optind;
4067         argv += optind;
4068
4069         if (resume_token != NULL) {
4070                 if (fromname != NULL || flags.replicate || flags.props ||
4071                     flags.backup || flags.dedup) {
4072                         (void) fprintf(stderr,
4073                             gettext("invalid flags combined with -t\n"));
4074                         usage(B_FALSE);
4075                 }
4076                 if (argc != 0) {
4077                         (void) fprintf(stderr, gettext("no additional "
4078                             "arguments are permitted with -t\n"));
4079                         usage(B_FALSE);
4080                 }
4081         } else {
4082                 if (argc < 1) {
4083                         (void) fprintf(stderr,
4084                             gettext("missing snapshot argument\n"));
4085                         usage(B_FALSE);
4086                 }
4087                 if (argc > 1) {
4088                         (void) fprintf(stderr, gettext("too many arguments\n"));
4089                         usage(B_FALSE);
4090                 }
4091         }
4092
4093         if (!flags.dryrun && isatty(STDOUT_FILENO)) {
4094                 (void) fprintf(stderr,
4095                     gettext("Error: Stream can not be written to a terminal.\n"
4096                     "You must redirect standard output.\n"));
4097                 return (1);
4098         }
4099
4100         if (resume_token != NULL) {
4101                 return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
4102                     resume_token));
4103         }
4104
4105         /*
4106          * Special case sending a filesystem, or from a bookmark.
4107          */
4108         if (strchr(argv[0], '@') == NULL ||
4109             (fromname && strchr(fromname, '#') != NULL)) {
4110                 char frombuf[ZFS_MAX_DATASET_NAME_LEN];
4111
4112                 if (flags.replicate || flags.doall || flags.props ||
4113                     flags.backup || flags.dedup ||
4114                     (strchr(argv[0], '@') == NULL &&
4115                     (flags.dryrun || flags.verbose || flags.progress))) {
4116                         (void) fprintf(stderr, gettext("Error: "
4117                             "Unsupported flag with filesystem or bookmark.\n"));
4118                         return (1);
4119                 }
4120
4121                 zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
4122                 if (zhp == NULL)
4123                         return (1);
4124
4125                 if (fromname != NULL &&
4126                     (fromname[0] == '#' || fromname[0] == '@')) {
4127                         /*
4128                          * Incremental source name begins with # or @.
4129                          * Default to same fs as target.
4130                          */
4131                         (void) strlcpy(frombuf, argv[0], sizeof (frombuf));
4132                         cp = strchr(frombuf, '@');
4133                         if (cp != NULL)
4134                                 *cp = '\0';
4135                         (void) strlcat(frombuf, fromname, sizeof (frombuf));
4136                         fromname = frombuf;
4137                 }
4138                 err = zfs_send_one(zhp, fromname, STDOUT_FILENO, flags);
4139                 zfs_close(zhp);
4140                 return (err != 0);
4141         }
4142
4143         cp = strchr(argv[0], '@');
4144         *cp = '\0';
4145         toname = cp + 1;
4146         zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4147         if (zhp == NULL)
4148                 return (1);
4149
4150         /*
4151          * If they specified the full path to the snapshot, chop off
4152          * everything except the short name of the snapshot, but special
4153          * case if they specify the origin.
4154          */
4155         if (fromname && (cp = strchr(fromname, '@')) != NULL) {
4156                 char origin[ZFS_MAX_DATASET_NAME_LEN];
4157                 zprop_source_t src;
4158
4159                 (void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
4160                     origin, sizeof (origin), &src, NULL, 0, B_FALSE);
4161
4162                 if (strcmp(origin, fromname) == 0) {
4163                         fromname = NULL;
4164                         flags.fromorigin = B_TRUE;
4165                 } else {
4166                         *cp = '\0';
4167                         if (cp != fromname && strcmp(argv[0], fromname)) {
4168                                 (void) fprintf(stderr,
4169                                     gettext("incremental source must be "
4170                                     "in same filesystem\n"));
4171                                 usage(B_FALSE);
4172                         }
4173                         fromname = cp + 1;
4174                         if (strchr(fromname, '@') || strchr(fromname, '/')) {
4175                                 (void) fprintf(stderr,
4176                                     gettext("invalid incremental source\n"));
4177                                 usage(B_FALSE);
4178                         }
4179                 }
4180         }
4181
4182         if (flags.replicate && fromname == NULL)
4183                 flags.doall = B_TRUE;
4184
4185         err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO, NULL, 0,
4186             extraverbose ? &dbgnv : NULL);
4187
4188         if (extraverbose && dbgnv != NULL) {
4189                 /*
4190                  * dump_nvlist prints to stdout, but that's been
4191                  * redirected to a file.  Make it print to stderr
4192                  * instead.
4193                  */
4194                 (void) dup2(STDERR_FILENO, STDOUT_FILENO);
4195                 dump_nvlist(dbgnv, 0);
4196                 nvlist_free(dbgnv);
4197         }
4198         zfs_close(zhp);
4199
4200         return (err != 0);
4201 }
4202
4203 /*
4204  * Restore a backup stream from stdin.
4205  */
4206 static int
4207 zfs_do_receive(int argc, char **argv)
4208 {
4209         int c, err = 0;
4210         recvflags_t flags = { 0 };
4211         boolean_t abort_resumable = B_FALSE;
4212         nvlist_t *props;
4213
4214         if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
4215                 nomem();
4216
4217         /* check options */
4218         while ((c = getopt(argc, argv, ":o:x:denuvFsA")) != -1) {
4219                 switch (c) {
4220                 case 'o':
4221                         if (!parseprop(props, optarg)) {
4222                                 nvlist_free(props);
4223                                 usage(B_FALSE);
4224                         }
4225                         break;
4226                 case 'x':
4227                         if (!parsepropname(props, optarg)) {
4228                                 nvlist_free(props);
4229                                 usage(B_FALSE);
4230                         }
4231                         break;
4232                 case 'd':
4233                         flags.isprefix = B_TRUE;
4234                         break;
4235                 case 'e':
4236                         flags.isprefix = B_TRUE;
4237                         flags.istail = B_TRUE;
4238                         break;
4239                 case 'n':
4240                         flags.dryrun = B_TRUE;
4241                         break;
4242                 case 'u':
4243                         flags.nomount = B_TRUE;
4244                         break;
4245                 case 'v':
4246                         flags.verbose = B_TRUE;
4247                         break;
4248                 case 's':
4249                         flags.resumable = B_TRUE;
4250                         break;
4251                 case 'F':
4252                         flags.force = B_TRUE;
4253                         break;
4254                 case 'A':
4255                         abort_resumable = B_TRUE;
4256                         break;
4257                 case ':':
4258                         (void) fprintf(stderr, gettext("missing argument for "
4259                             "'%c' option\n"), optopt);
4260                         usage(B_FALSE);
4261                         break;
4262                 case '?':
4263                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
4264                             optopt);
4265                         usage(B_FALSE);
4266                 }
4267         }
4268
4269         argc -= optind;
4270         argv += optind;
4271
4272         /* check number of arguments */
4273         if (argc < 1) {
4274                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
4275                 usage(B_FALSE);
4276         }
4277         if (argc > 1) {
4278                 (void) fprintf(stderr, gettext("too many arguments\n"));
4279                 usage(B_FALSE);
4280         }
4281
4282         if (abort_resumable) {
4283                 if (flags.isprefix || flags.istail || flags.dryrun ||
4284                     flags.resumable || flags.nomount) {
4285                         (void) fprintf(stderr, gettext("invalid option\n"));
4286                         usage(B_FALSE);
4287                 }
4288
4289                 char namebuf[ZFS_MAX_DATASET_NAME_LEN];
4290                 (void) snprintf(namebuf, sizeof (namebuf),
4291                     "%s/%%recv", argv[0]);
4292
4293                 if (zfs_dataset_exists(g_zfs, namebuf,
4294                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
4295                         zfs_handle_t *zhp = zfs_open(g_zfs,
4296                             namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4297                         if (zhp == NULL) {
4298                                 nvlist_free(props);
4299                                 return (1);
4300                         }
4301                         err = zfs_destroy(zhp, B_FALSE);
4302                         zfs_close(zhp);
4303                 } else {
4304                         zfs_handle_t *zhp = zfs_open(g_zfs,
4305                             argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
4306                         if (zhp == NULL)
4307                                 usage(B_FALSE);
4308                         if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
4309                             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
4310                             NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
4311                                 (void) fprintf(stderr,
4312                                     gettext("'%s' does not have any "
4313                                     "resumable receive state to abort\n"),
4314                                     argv[0]);
4315                                 nvlist_free(props);
4316                                 zfs_close(zhp);
4317                                 return (1);
4318                         }
4319                         err = zfs_destroy(zhp, B_FALSE);
4320                         zfs_close(zhp);
4321                 }
4322                 nvlist_free(props);
4323                 return (err != 0);
4324         }
4325
4326         if (isatty(STDIN_FILENO)) {
4327                 (void) fprintf(stderr,
4328                     gettext("Error: Backup stream can not be read "
4329                     "from a terminal.\n"
4330                     "You must redirect standard input.\n"));
4331                 nvlist_free(props);
4332                 return (1);
4333         }
4334         err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
4335         nvlist_free(props);
4336
4337         return (err != 0);
4338 }
4339
4340 /*
4341  * allow/unallow stuff
4342  */
4343 /* copied from zfs/sys/dsl_deleg.h */
4344 #define ZFS_DELEG_PERM_CREATE           "create"
4345 #define ZFS_DELEG_PERM_DESTROY          "destroy"
4346 #define ZFS_DELEG_PERM_SNAPSHOT         "snapshot"
4347 #define ZFS_DELEG_PERM_ROLLBACK         "rollback"
4348 #define ZFS_DELEG_PERM_CLONE            "clone"
4349 #define ZFS_DELEG_PERM_PROMOTE          "promote"
4350 #define ZFS_DELEG_PERM_RENAME           "rename"
4351 #define ZFS_DELEG_PERM_MOUNT            "mount"
4352 #define ZFS_DELEG_PERM_SHARE            "share"
4353 #define ZFS_DELEG_PERM_SEND             "send"
4354 #define ZFS_DELEG_PERM_RECEIVE          "receive"
4355 #define ZFS_DELEG_PERM_ALLOW            "allow"
4356 #define ZFS_DELEG_PERM_USERPROP         "userprop"
4357 #define ZFS_DELEG_PERM_VSCAN            "vscan" /* ??? */
4358 #define ZFS_DELEG_PERM_USERQUOTA        "userquota"
4359 #define ZFS_DELEG_PERM_GROUPQUOTA       "groupquota"
4360 #define ZFS_DELEG_PERM_USERUSED         "userused"
4361 #define ZFS_DELEG_PERM_GROUPUSED        "groupused"
4362 #define ZFS_DELEG_PERM_USEROBJQUOTA     "userobjquota"
4363 #define ZFS_DELEG_PERM_GROUPOBJQUOTA    "groupobjquota"
4364 #define ZFS_DELEG_PERM_USEROBJUSED      "userobjused"
4365 #define ZFS_DELEG_PERM_GROUPOBJUSED     "groupobjused"
4366
4367 #define ZFS_DELEG_PERM_HOLD             "hold"
4368 #define ZFS_DELEG_PERM_RELEASE          "release"
4369 #define ZFS_DELEG_PERM_DIFF             "diff"
4370 #define ZFS_DELEG_PERM_BOOKMARK         "bookmark"
4371 #define ZFS_DELEG_PERM_REMAP            "remap"
4372 #define ZFS_DELEG_PERM_LOAD_KEY         "load-key"
4373 #define ZFS_DELEG_PERM_CHANGE_KEY       "change-key"
4374
4375 #define ZFS_DELEG_PERM_PROJECTUSED      "projectused"
4376 #define ZFS_DELEG_PERM_PROJECTQUOTA     "projectquota"
4377 #define ZFS_DELEG_PERM_PROJECTOBJUSED   "projectobjused"
4378 #define ZFS_DELEG_PERM_PROJECTOBJQUOTA  "projectobjquota"
4379
4380 #define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
4381
4382 static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
4383         { ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
4384         { ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
4385         { ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
4386         { ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
4387         { ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
4388         { ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
4389         { ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
4390         { ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
4391         { ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
4392         { ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
4393         { ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
4394         { ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
4395         { ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
4396         { ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
4397         { ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
4398         { ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
4399         { ZFS_DELEG_PERM_REMAP, ZFS_DELEG_NOTE_REMAP },
4400         { ZFS_DELEG_PERM_LOAD_KEY, ZFS_DELEG_NOTE_LOAD_KEY },
4401         { ZFS_DELEG_PERM_CHANGE_KEY, ZFS_DELEG_NOTE_CHANGE_KEY },
4402
4403         { ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
4404         { ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
4405         { ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
4406         { ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
4407         { ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
4408         { ZFS_DELEG_PERM_USEROBJQUOTA, ZFS_DELEG_NOTE_USEROBJQUOTA },
4409         { ZFS_DELEG_PERM_USEROBJUSED, ZFS_DELEG_NOTE_USEROBJUSED },
4410         { ZFS_DELEG_PERM_GROUPOBJQUOTA, ZFS_DELEG_NOTE_GROUPOBJQUOTA },
4411         { ZFS_DELEG_PERM_GROUPOBJUSED, ZFS_DELEG_NOTE_GROUPOBJUSED },
4412         { ZFS_DELEG_PERM_PROJECTUSED, ZFS_DELEG_NOTE_PROJECTUSED },
4413         { ZFS_DELEG_PERM_PROJECTQUOTA, ZFS_DELEG_NOTE_PROJECTQUOTA },
4414         { ZFS_DELEG_PERM_PROJECTOBJUSED, ZFS_DELEG_NOTE_PROJECTOBJUSED },
4415         { ZFS_DELEG_PERM_PROJECTOBJQUOTA, ZFS_DELEG_NOTE_PROJECTOBJQUOTA },
4416         { NULL, ZFS_DELEG_NOTE_NONE }
4417 };
4418
4419 /* permission structure */
4420 typedef struct deleg_perm {
4421         zfs_deleg_who_type_t    dp_who_type;
4422         const char              *dp_name;
4423         boolean_t               dp_local;
4424         boolean_t               dp_descend;
4425 } deleg_perm_t;
4426
4427 /* */
4428 typedef struct deleg_perm_node {
4429         deleg_perm_t            dpn_perm;
4430
4431         uu_avl_node_t           dpn_avl_node;
4432 } deleg_perm_node_t;
4433
4434 typedef struct fs_perm fs_perm_t;
4435
4436 /* permissions set */
4437 typedef struct who_perm {
4438         zfs_deleg_who_type_t    who_type;
4439         const char              *who_name;              /* id */
4440         char                    who_ug_name[256];       /* user/group name */
4441         fs_perm_t               *who_fsperm;            /* uplink */
4442
4443         uu_avl_t                *who_deleg_perm_avl;    /* permissions */
4444 } who_perm_t;
4445
4446 /* */
4447 typedef struct who_perm_node {
4448         who_perm_t      who_perm;
4449         uu_avl_node_t   who_avl_node;
4450 } who_perm_node_t;
4451
4452 typedef struct fs_perm_set fs_perm_set_t;
4453 /* fs permissions */
4454 struct fs_perm {
4455         const char              *fsp_name;
4456
4457         uu_avl_t                *fsp_sc_avl;    /* sets,create */
4458         uu_avl_t                *fsp_uge_avl;   /* user,group,everyone */
4459
4460         fs_perm_set_t           *fsp_set;       /* uplink */
4461 };
4462
4463 /* */
4464 typedef struct fs_perm_node {
4465         fs_perm_t       fspn_fsperm;
4466         uu_avl_t        *fspn_avl;
4467
4468         uu_list_node_t  fspn_list_node;
4469 } fs_perm_node_t;
4470
4471 /* top level structure */
4472 struct fs_perm_set {
4473         uu_list_pool_t  *fsps_list_pool;
4474         uu_list_t       *fsps_list; /* list of fs_perms */
4475
4476         uu_avl_pool_t   *fsps_named_set_avl_pool;
4477         uu_avl_pool_t   *fsps_who_perm_avl_pool;
4478         uu_avl_pool_t   *fsps_deleg_perm_avl_pool;
4479 };
4480
4481 static inline const char *
4482 deleg_perm_type(zfs_deleg_note_t note)
4483 {
4484         /* subcommands */
4485         switch (note) {
4486                 /* SUBCOMMANDS */
4487                 /* OTHER */
4488         case ZFS_DELEG_NOTE_GROUPQUOTA:
4489         case ZFS_DELEG_NOTE_GROUPUSED:
4490         case ZFS_DELEG_NOTE_USERPROP:
4491         case ZFS_DELEG_NOTE_USERQUOTA:
4492         case ZFS_DELEG_NOTE_USERUSED:
4493         case ZFS_DELEG_NOTE_USEROBJQUOTA:
4494         case ZFS_DELEG_NOTE_USEROBJUSED:
4495         case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
4496         case ZFS_DELEG_NOTE_GROUPOBJUSED:
4497         case ZFS_DELEG_NOTE_PROJECTUSED:
4498         case ZFS_DELEG_NOTE_PROJECTQUOTA:
4499         case ZFS_DELEG_NOTE_PROJECTOBJUSED:
4500         case ZFS_DELEG_NOTE_PROJECTOBJQUOTA:
4501                 /* other */
4502                 return (gettext("other"));
4503         default:
4504                 return (gettext("subcommand"));
4505         }
4506 }
4507
4508 static int
4509 who_type2weight(zfs_deleg_who_type_t who_type)
4510 {
4511         int res;
4512         switch (who_type) {
4513                 case ZFS_DELEG_NAMED_SET_SETS:
4514                 case ZFS_DELEG_NAMED_SET:
4515                         res = 0;
4516                         break;
4517                 case ZFS_DELEG_CREATE_SETS:
4518                 case ZFS_DELEG_CREATE:
4519                         res = 1;
4520                         break;
4521                 case ZFS_DELEG_USER_SETS:
4522                 case ZFS_DELEG_USER:
4523                         res = 2;
4524                         break;
4525                 case ZFS_DELEG_GROUP_SETS:
4526                 case ZFS_DELEG_GROUP:
4527                         res = 3;
4528                         break;
4529                 case ZFS_DELEG_EVERYONE_SETS:
4530                 case ZFS_DELEG_EVERYONE:
4531                         res = 4;
4532                         break;
4533                 default:
4534                         res = -1;
4535         }
4536
4537         return (res);
4538 }
4539
4540 /* ARGSUSED */
4541 static int
4542 who_perm_compare(const void *larg, const void *rarg, void *unused)
4543 {
4544         const who_perm_node_t *l = larg;
4545         const who_perm_node_t *r = rarg;
4546         zfs_deleg_who_type_t ltype = l->who_perm.who_type;
4547         zfs_deleg_who_type_t rtype = r->who_perm.who_type;
4548         int lweight = who_type2weight(ltype);
4549         int rweight = who_type2weight(rtype);
4550         int res = lweight - rweight;
4551         if (res == 0)
4552                 res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
4553                     ZFS_MAX_DELEG_NAME-1);
4554
4555         if (res == 0)
4556                 return (0);
4557         if (res > 0)
4558                 return (1);
4559         else
4560                 return (-1);
4561 }
4562
4563 /* ARGSUSED */
4564 static int
4565 deleg_perm_compare(const void *larg, const void *rarg, void *unused)
4566 {
4567         const deleg_perm_node_t *l = larg;
4568         const deleg_perm_node_t *r = rarg;
4569         int res =  strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
4570             ZFS_MAX_DELEG_NAME-1);
4571
4572         if (res == 0)
4573                 return (0);
4574
4575         if (res > 0)
4576                 return (1);
4577         else
4578                 return (-1);
4579 }
4580
4581 static inline void
4582 fs_perm_set_init(fs_perm_set_t *fspset)
4583 {
4584         bzero(fspset, sizeof (fs_perm_set_t));
4585
4586         if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
4587             sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
4588             NULL, UU_DEFAULT)) == NULL)
4589                 nomem();
4590         if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
4591             UU_DEFAULT)) == NULL)
4592                 nomem();
4593
4594         if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
4595             "named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
4596             who_perm_node_t, who_avl_node), who_perm_compare,
4597             UU_DEFAULT)) == NULL)
4598                 nomem();
4599
4600         if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
4601             "who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
4602             who_perm_node_t, who_avl_node), who_perm_compare,
4603             UU_DEFAULT)) == NULL)
4604                 nomem();
4605
4606         if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
4607             "deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
4608             deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
4609             == NULL)
4610                 nomem();
4611 }
4612
4613 static inline void fs_perm_fini(fs_perm_t *);
4614 static inline void who_perm_fini(who_perm_t *);
4615
4616 static inline void
4617 fs_perm_set_fini(fs_perm_set_t *fspset)
4618 {
4619         fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
4620
4621         while (node != NULL) {
4622                 fs_perm_node_t *next_node =
4623                     uu_list_next(fspset->fsps_list, node);
4624                 fs_perm_t *fsperm = &node->fspn_fsperm;
4625                 fs_perm_fini(fsperm);
4626                 uu_list_remove(fspset->fsps_list, node);
4627                 free(node);
4628                 node = next_node;
4629         }
4630
4631         uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
4632         uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
4633         uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
4634 }
4635
4636 static inline void
4637 deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
4638     const char *name)
4639 {
4640         deleg_perm->dp_who_type = type;
4641         deleg_perm->dp_name = name;
4642 }
4643
4644 static inline void
4645 who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
4646     zfs_deleg_who_type_t type, const char *name)
4647 {
4648         uu_avl_pool_t   *pool;
4649         pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
4650
4651         bzero(who_perm, sizeof (who_perm_t));
4652
4653         if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
4654             UU_DEFAULT)) == NULL)
4655                 nomem();
4656
4657         who_perm->who_type = type;
4658         who_perm->who_name = name;
4659         who_perm->who_fsperm = fsperm;
4660 }
4661
4662 static inline void
4663 who_perm_fini(who_perm_t *who_perm)
4664 {
4665         deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
4666
4667         while (node != NULL) {
4668                 deleg_perm_node_t *next_node =
4669                     uu_avl_next(who_perm->who_deleg_perm_avl, node);
4670
4671                 uu_avl_remove(who_perm->who_deleg_perm_avl, node);
4672                 free(node);
4673                 node = next_node;
4674         }
4675
4676         uu_avl_destroy(who_perm->who_deleg_perm_avl);
4677 }
4678
4679 static inline void
4680 fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
4681 {
4682         uu_avl_pool_t   *nset_pool = fspset->fsps_named_set_avl_pool;
4683         uu_avl_pool_t   *who_pool = fspset->fsps_who_perm_avl_pool;
4684
4685         bzero(fsperm, sizeof (fs_perm_t));
4686
4687         if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
4688             == NULL)
4689                 nomem();
4690
4691         if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
4692             == NULL)
4693                 nomem();
4694
4695         fsperm->fsp_set = fspset;
4696         fsperm->fsp_name = fsname;
4697 }
4698
4699 static inline void
4700 fs_perm_fini(fs_perm_t *fsperm)
4701 {
4702         who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
4703         while (node != NULL) {
4704                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
4705                     node);
4706                 who_perm_t *who_perm = &node->who_perm;
4707                 who_perm_fini(who_perm);
4708                 uu_avl_remove(fsperm->fsp_sc_avl, node);
4709                 free(node);
4710                 node = next_node;
4711         }
4712
4713         node = uu_avl_first(fsperm->fsp_uge_avl);
4714         while (node != NULL) {
4715                 who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
4716                     node);
4717                 who_perm_t *who_perm = &node->who_perm;
4718                 who_perm_fini(who_perm);
4719                 uu_avl_remove(fsperm->fsp_uge_avl, node);
4720                 free(node);
4721                 node = next_node;
4722         }
4723
4724         uu_avl_destroy(fsperm->fsp_sc_avl);
4725         uu_avl_destroy(fsperm->fsp_uge_avl);
4726 }
4727
4728 static void
4729 set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
4730     zfs_deleg_who_type_t who_type, const char *name, char locality)
4731 {
4732         uu_avl_index_t idx = 0;
4733
4734         deleg_perm_node_t *found_node = NULL;
4735         deleg_perm_t    *deleg_perm = &node->dpn_perm;
4736
4737         deleg_perm_init(deleg_perm, who_type, name);
4738
4739         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4740             == NULL)
4741                 uu_avl_insert(avl, node, idx);
4742         else {
4743                 node = found_node;
4744                 deleg_perm = &node->dpn_perm;
4745         }
4746
4747
4748         switch (locality) {
4749         case ZFS_DELEG_LOCAL:
4750                 deleg_perm->dp_local = B_TRUE;
4751                 break;
4752         case ZFS_DELEG_DESCENDENT:
4753                 deleg_perm->dp_descend = B_TRUE;
4754                 break;
4755         case ZFS_DELEG_NA:
4756                 break;
4757         default:
4758                 assert(B_FALSE); /* invalid locality */
4759         }
4760 }
4761
4762 static inline int
4763 parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
4764 {
4765         nvpair_t *nvp = NULL;
4766         fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
4767         uu_avl_t *avl = who_perm->who_deleg_perm_avl;
4768         zfs_deleg_who_type_t who_type = who_perm->who_type;
4769
4770         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4771                 const char *name = nvpair_name(nvp);
4772                 data_type_t type = nvpair_type(nvp);
4773                 uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
4774                 deleg_perm_node_t *node =
4775                     safe_malloc(sizeof (deleg_perm_node_t));
4776
4777                 VERIFY(type == DATA_TYPE_BOOLEAN);
4778
4779                 uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
4780                 set_deleg_perm_node(avl, node, who_type, name, locality);
4781         }
4782
4783         return (0);
4784 }
4785
4786 static inline int
4787 parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
4788 {
4789         nvpair_t *nvp = NULL;
4790         fs_perm_set_t *fspset = fsperm->fsp_set;
4791
4792         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4793                 nvlist_t *nvl2 = NULL;
4794                 const char *name = nvpair_name(nvp);
4795                 uu_avl_t *avl = NULL;
4796                 uu_avl_pool_t *avl_pool = NULL;
4797                 zfs_deleg_who_type_t perm_type = name[0];
4798                 char perm_locality = name[1];
4799                 const char *perm_name = name + 3;
4800                 boolean_t is_set = B_TRUE;
4801                 who_perm_t *who_perm = NULL;
4802
4803                 assert('$' == name[2]);
4804
4805                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4806                         return (-1);
4807
4808                 switch (perm_type) {
4809                 case ZFS_DELEG_CREATE:
4810                 case ZFS_DELEG_CREATE_SETS:
4811                 case ZFS_DELEG_NAMED_SET:
4812                 case ZFS_DELEG_NAMED_SET_SETS:
4813                         avl_pool = fspset->fsps_named_set_avl_pool;
4814                         avl = fsperm->fsp_sc_avl;
4815                         break;
4816                 case ZFS_DELEG_USER:
4817                 case ZFS_DELEG_USER_SETS:
4818                 case ZFS_DELEG_GROUP:
4819                 case ZFS_DELEG_GROUP_SETS:
4820                 case ZFS_DELEG_EVERYONE:
4821                 case ZFS_DELEG_EVERYONE_SETS:
4822                         avl_pool = fspset->fsps_who_perm_avl_pool;
4823                         avl = fsperm->fsp_uge_avl;
4824                         break;
4825
4826                 default:
4827                         assert(!"unhandled zfs_deleg_who_type_t");
4828                 }
4829
4830                 if (is_set) {
4831                         who_perm_node_t *found_node = NULL;
4832                         who_perm_node_t *node = safe_malloc(
4833                             sizeof (who_perm_node_t));
4834                         who_perm = &node->who_perm;
4835                         uu_avl_index_t idx = 0;
4836
4837                         uu_avl_node_init(node, &node->who_avl_node, avl_pool);
4838                         who_perm_init(who_perm, fsperm, perm_type, perm_name);
4839
4840                         if ((found_node = uu_avl_find(avl, node, NULL, &idx))
4841                             == NULL) {
4842                                 if (avl == fsperm->fsp_uge_avl) {
4843                                         uid_t rid = 0;
4844                                         struct passwd *p = NULL;
4845                                         struct group *g = NULL;
4846                                         const char *nice_name = NULL;
4847
4848                                         switch (perm_type) {
4849                                         case ZFS_DELEG_USER_SETS:
4850                                         case ZFS_DELEG_USER:
4851                                                 rid = atoi(perm_name);
4852                                                 p = getpwuid(rid);
4853                                                 if (p)
4854                                                         nice_name = p->pw_name;
4855                                                 break;
4856                                         case ZFS_DELEG_GROUP_SETS:
4857                                         case ZFS_DELEG_GROUP:
4858                                                 rid = atoi(perm_name);
4859                                                 g = getgrgid(rid);
4860                                                 if (g)
4861                                                         nice_name = g->gr_name;
4862                                                 break;
4863
4864                                         default:
4865                                                 break;
4866                                         }
4867
4868                                         if (nice_name != NULL)
4869                                                 (void) strlcpy(
4870                                                     node->who_perm.who_ug_name,
4871                                                     nice_name, 256);
4872                                 }
4873
4874                                 uu_avl_insert(avl, node, idx);
4875                         } else {
4876                                 node = found_node;
4877                                 who_perm = &node->who_perm;
4878                         }
4879                 }
4880                 VERIFY3P(who_perm, !=, NULL);
4881                 (void) parse_who_perm(who_perm, nvl2, perm_locality);
4882         }
4883
4884         return (0);
4885 }
4886
4887 static inline int
4888 parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
4889 {
4890         nvpair_t *nvp = NULL;
4891         uu_avl_index_t idx = 0;
4892
4893         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
4894                 nvlist_t *nvl2 = NULL;
4895                 const char *fsname = nvpair_name(nvp);
4896                 data_type_t type = nvpair_type(nvp);
4897                 fs_perm_t *fsperm = NULL;
4898                 fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
4899                 if (node == NULL)
4900                         nomem();
4901
4902                 fsperm = &node->fspn_fsperm;
4903
4904                 VERIFY(DATA_TYPE_NVLIST == type);
4905
4906                 uu_list_node_init(node, &node->fspn_list_node,
4907                     fspset->fsps_list_pool);
4908
4909                 idx = uu_list_numnodes(fspset->fsps_list);
4910                 fs_perm_init(fsperm, fspset, fsname);
4911
4912                 if (nvpair_value_nvlist(nvp, &nvl2) != 0)
4913                         return (-1);
4914
4915                 (void) parse_fs_perm(fsperm, nvl2);
4916
4917                 uu_list_insert(fspset->fsps_list, node, idx);
4918         }
4919
4920         return (0);
4921 }
4922
4923 static inline const char *
4924 deleg_perm_comment(zfs_deleg_note_t note)
4925 {
4926         const char *str = "";
4927
4928         /* subcommands */
4929         switch (note) {
4930                 /* SUBCOMMANDS */
4931         case ZFS_DELEG_NOTE_ALLOW:
4932                 str = gettext("Must also have the permission that is being"
4933                     "\n\t\t\t\tallowed");
4934                 break;
4935         case ZFS_DELEG_NOTE_CLONE:
4936                 str = gettext("Must also have the 'create' ability and 'mount'"
4937                     "\n\t\t\t\tability in the origin file system");
4938                 break;
4939         case ZFS_DELEG_NOTE_CREATE:
4940                 str = gettext("Must also have the 'mount' ability");
4941                 break;
4942         case ZFS_DELEG_NOTE_DESTROY:
4943                 str = gettext("Must also have the 'mount' ability");
4944                 break;
4945         case ZFS_DELEG_NOTE_DIFF:
4946                 str = gettext("Allows lookup of paths within a dataset;"
4947                     "\n\t\t\t\tgiven an object number. Ordinary users need this"
4948                     "\n\t\t\t\tin order to use zfs diff");
4949                 break;
4950         case ZFS_DELEG_NOTE_HOLD:
4951                 str = gettext("Allows adding a user hold to a snapshot");
4952                 break;
4953         case ZFS_DELEG_NOTE_MOUNT:
4954                 str = gettext("Allows mount/umount of ZFS datasets");
4955                 break;
4956         case ZFS_DELEG_NOTE_PROMOTE:
4957                 str = gettext("Must also have the 'mount'\n\t\t\t\tand"
4958                     " 'promote' ability in the origin file system");
4959                 break;
4960         case ZFS_DELEG_NOTE_RECEIVE:
4961                 str = gettext("Must also have the 'mount' and 'create'"
4962                     " ability");
4963                 break;
4964         case ZFS_DELEG_NOTE_RELEASE:
4965                 str = gettext("Allows releasing a user hold which\n\t\t\t\t"
4966                     "might destroy the snapshot");
4967                 break;
4968         case ZFS_DELEG_NOTE_RENAME:
4969                 str = gettext("Must also have the 'mount' and 'create'"
4970                     "\n\t\t\t\tability in the new parent");
4971                 break;
4972         case ZFS_DELEG_NOTE_ROLLBACK:
4973                 str = gettext("");
4974                 break;
4975         case ZFS_DELEG_NOTE_SEND:
4976                 str = gettext("");
4977                 break;
4978         case ZFS_DELEG_NOTE_SHARE:
4979                 str = gettext("Allows sharing file systems over NFS or SMB"
4980                     "\n\t\t\t\tprotocols");
4981                 break;
4982         case ZFS_DELEG_NOTE_SNAPSHOT:
4983                 str = gettext("");
4984                 break;
4985         case ZFS_DELEG_NOTE_LOAD_KEY:
4986                 str = gettext("Allows loading or unloading an encryption key");
4987                 break;
4988         case ZFS_DELEG_NOTE_CHANGE_KEY:
4989                 str = gettext("Allows changing or adding an encryption key");
4990                 break;
4991 /*
4992  *      case ZFS_DELEG_NOTE_VSCAN:
4993  *              str = gettext("");
4994  *              break;
4995  */
4996                 /* OTHER */
4997         case ZFS_DELEG_NOTE_GROUPQUOTA:
4998                 str = gettext("Allows accessing any groupquota@... property");
4999                 break;
5000         case ZFS_DELEG_NOTE_GROUPUSED:
5001                 str = gettext("Allows reading any groupused@... property");
5002                 break;
5003         case ZFS_DELEG_NOTE_USERPROP:
5004                 str = gettext("Allows changing any user property");
5005                 break;
5006         case ZFS_DELEG_NOTE_USERQUOTA:
5007                 str = gettext("Allows accessing any userquota@... property");
5008                 break;
5009         case ZFS_DELEG_NOTE_USERUSED:
5010                 str = gettext("Allows reading any userused@... property");
5011                 break;
5012         case ZFS_DELEG_NOTE_USEROBJQUOTA:
5013                 str = gettext("Allows accessing any userobjquota@... property");
5014                 break;
5015         case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
5016                 str = gettext("Allows accessing any \n\t\t\t\t"
5017                     "groupobjquota@... property");
5018                 break;
5019         case ZFS_DELEG_NOTE_GROUPOBJUSED:
5020                 str = gettext("Allows reading any groupobjused@... property");
5021                 break;
5022         case ZFS_DELEG_NOTE_USEROBJUSED:
5023                 str = gettext("Allows reading any userobjused@... property");
5024                 break;
5025         case ZFS_DELEG_NOTE_PROJECTQUOTA:
5026                 str = gettext("Allows accessing any projectquota@... property");
5027                 break;
5028         case ZFS_DELEG_NOTE_PROJECTOBJQUOTA:
5029                 str = gettext("Allows accessing any \n\t\t\t\t"
5030                     "projectobjquota@... property");
5031                 break;
5032         case ZFS_DELEG_NOTE_PROJECTUSED:
5033                 str = gettext("Allows reading any projectused@... property");
5034                 break;
5035         case ZFS_DELEG_NOTE_PROJECTOBJUSED:
5036                 str = gettext("Allows accessing any \n\t\t\t\t"
5037                     "projectobjused@... property");
5038                 break;
5039                 /* other */
5040         default:
5041                 str = "";
5042         }
5043
5044         return (str);
5045 }
5046
5047 struct allow_opts {
5048         boolean_t local;
5049         boolean_t descend;
5050         boolean_t user;
5051         boolean_t group;
5052         boolean_t everyone;
5053         boolean_t create;
5054         boolean_t set;
5055         boolean_t recursive; /* unallow only */
5056         boolean_t prt_usage;
5057
5058         boolean_t prt_perms;
5059         char *who;
5060         char *perms;
5061         const char *dataset;
5062 };
5063
5064 static inline int
5065 prop_cmp(const void *a, const void *b)
5066 {
5067         const char *str1 = *(const char **)a;
5068         const char *str2 = *(const char **)b;
5069         return (strcmp(str1, str2));
5070 }
5071
5072 static void
5073 allow_usage(boolean_t un, boolean_t requested, const char *msg)
5074 {
5075         const char *opt_desc[] = {
5076                 "-h", gettext("show this help message and exit"),
5077                 "-l", gettext("set permission locally"),
5078                 "-d", gettext("set permission for descents"),
5079                 "-u", gettext("set permission for user"),
5080                 "-g", gettext("set permission for group"),
5081                 "-e", gettext("set permission for everyone"),
5082                 "-c", gettext("set create time permission"),
5083                 "-s", gettext("define permission set"),
5084                 /* unallow only */
5085                 "-r", gettext("remove permissions recursively"),
5086         };
5087         size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
5088         size_t allow_size = unallow_size - 2;
5089         const char *props[ZFS_NUM_PROPS];
5090         int i;
5091         size_t count = 0;
5092         FILE *fp = requested ? stdout : stderr;
5093         zprop_desc_t *pdtbl = zfs_prop_get_table();
5094         const char *fmt = gettext("%-16s %-14s\t%s\n");
5095
5096         (void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
5097             HELP_ALLOW));
5098         (void) fprintf(fp, gettext("Options:\n"));
5099         for (i = 0; i < (un ? unallow_size : allow_size); i += 2) {
5100                 const char *opt = opt_desc[i];
5101                 const char *optdsc = opt_desc[i + 1];
5102                 (void) fprintf(fp, gettext("  %-10s  %s\n"), opt, optdsc);
5103         }
5104
5105         (void) fprintf(fp, gettext("\nThe following permissions are "
5106             "supported:\n\n"));
5107         (void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
5108             gettext("NOTES"));
5109         for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
5110                 const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
5111                 zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
5112                 const char *perm_type = deleg_perm_type(perm_note);
5113                 const char *perm_comment = deleg_perm_comment(perm_note);
5114                 (void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
5115         }
5116
5117         for (i = 0; i < ZFS_NUM_PROPS; i++) {
5118                 zprop_desc_t *pd = &pdtbl[i];
5119                 if (pd->pd_visible != B_TRUE)
5120                         continue;
5121
5122                 if (pd->pd_attr == PROP_READONLY)
5123                         continue;
5124
5125                 props[count++] = pd->pd_name;
5126         }
5127         props[count] = NULL;
5128
5129         qsort(props, count, sizeof (char *), prop_cmp);
5130
5131         for (i = 0; i < count; i++)
5132                 (void) fprintf(fp, fmt, props[i], gettext("property"), "");
5133
5134         if (msg != NULL)
5135                 (void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
5136
5137         exit(requested ? 0 : 2);
5138 }
5139
5140 static inline const char *
5141 munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
5142     char **permsp)
5143 {
5144         if (un && argc == expected_argc - 1)
5145                 *permsp = NULL;
5146         else if (argc == expected_argc)
5147                 *permsp = argv[argc - 2];
5148         else
5149                 allow_usage(un, B_FALSE,
5150                     gettext("wrong number of parameters\n"));
5151
5152         return (argv[argc - 1]);
5153 }
5154
5155 static void
5156 parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
5157 {
5158         int uge_sum = opts->user + opts->group + opts->everyone;
5159         int csuge_sum = opts->create + opts->set + uge_sum;
5160         int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
5161         int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
5162
5163         if (uge_sum > 1)
5164                 allow_usage(un, B_FALSE,
5165                     gettext("-u, -g, and -e are mutually exclusive\n"));
5166
5167         if (opts->prt_usage) {
5168                 if (argc == 0 && all_sum == 0)
5169                         allow_usage(un, B_TRUE, NULL);
5170                 else
5171                         usage(B_FALSE);
5172         }
5173
5174         if (opts->set) {
5175                 if (csuge_sum > 1)
5176                         allow_usage(un, B_FALSE,
5177                             gettext("invalid options combined with -s\n"));
5178
5179                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
5180                 if (argv[0][0] != '@')
5181                         allow_usage(un, B_FALSE,
5182                             gettext("invalid set name: missing '@' prefix\n"));
5183                 opts->who = argv[0];
5184         } else if (opts->create) {
5185                 if (ldcsuge_sum > 1)
5186                         allow_usage(un, B_FALSE,
5187                             gettext("invalid options combined with -c\n"));
5188                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5189         } else if (opts->everyone) {
5190                 if (csuge_sum > 1)
5191                         allow_usage(un, B_FALSE,
5192                             gettext("invalid options combined with -e\n"));
5193                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5194         } else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
5195             == 0) {
5196                 opts->everyone = B_TRUE;
5197                 argc--;
5198                 argv++;
5199                 opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
5200         } else if (argc == 1 && !un) {
5201                 opts->prt_perms = B_TRUE;
5202                 opts->dataset = argv[argc-1];
5203         } else {
5204                 opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
5205                 opts->who = argv[0];
5206         }
5207
5208         if (!opts->local && !opts->descend) {
5209                 opts->local = B_TRUE;
5210                 opts->descend = B_TRUE;
5211         }
5212 }
5213
5214 static void
5215 store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
5216     const char *who, char *perms, nvlist_t *top_nvl)
5217 {
5218         int i;
5219         char ld[2] = { '\0', '\0' };
5220         char who_buf[MAXNAMELEN + 32];
5221         char base_type = '\0';
5222         char set_type = '\0';
5223         nvlist_t *base_nvl = NULL;
5224         nvlist_t *set_nvl = NULL;
5225         nvlist_t *nvl;
5226
5227         if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
5228                 nomem();
5229         if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) !=  0)
5230                 nomem();
5231
5232         switch (type) {
5233         case ZFS_DELEG_NAMED_SET_SETS:
5234         case ZFS_DELEG_NAMED_SET:
5235                 set_type = ZFS_DELEG_NAMED_SET_SETS;
5236                 base_type = ZFS_DELEG_NAMED_SET;
5237                 ld[0] = ZFS_DELEG_NA;
5238                 break;
5239         case ZFS_DELEG_CREATE_SETS:
5240         case ZFS_DELEG_CREATE:
5241                 set_type = ZFS_DELEG_CREATE_SETS;
5242                 base_type = ZFS_DELEG_CREATE;
5243                 ld[0] = ZFS_DELEG_NA;
5244                 break;
5245         case ZFS_DELEG_USER_SETS:
5246         case ZFS_DELEG_USER:
5247                 set_type = ZFS_DELEG_USER_SETS;
5248                 base_type = ZFS_DELEG_USER;
5249                 if (local)
5250                         ld[0] = ZFS_DELEG_LOCAL;
5251                 if (descend)
5252                         ld[1] = ZFS_DELEG_DESCENDENT;
5253                 break;
5254         case ZFS_DELEG_GROUP_SETS:
5255         case ZFS_DELEG_GROUP:
5256                 set_type = ZFS_DELEG_GROUP_SETS;
5257                 base_type = ZFS_DELEG_GROUP;
5258                 if (local)
5259                         ld[0] = ZFS_DELEG_LOCAL;
5260                 if (descend)
5261                         ld[1] = ZFS_DELEG_DESCENDENT;
5262                 break;
5263         case ZFS_DELEG_EVERYONE_SETS:
5264         case ZFS_DELEG_EVERYONE:
5265                 set_type = ZFS_DELEG_EVERYONE_SETS;
5266                 base_type = ZFS_DELEG_EVERYONE;
5267                 if (local)
5268                         ld[0] = ZFS_DELEG_LOCAL;
5269                 if (descend)
5270                         ld[1] = ZFS_DELEG_DESCENDENT;
5271                 break;
5272
5273         default:
5274                 assert(set_type != '\0' && base_type != '\0');
5275         }
5276
5277         if (perms != NULL) {
5278                 char *curr = perms;
5279                 char *end = curr + strlen(perms);
5280
5281                 while (curr < end) {
5282                         char *delim = strchr(curr, ',');
5283                         if (delim == NULL)
5284                                 delim = end;
5285                         else
5286                                 *delim = '\0';
5287
5288                         if (curr[0] == '@')
5289                                 nvl = set_nvl;
5290                         else
5291                                 nvl = base_nvl;
5292
5293                         (void) nvlist_add_boolean(nvl, curr);
5294                         if (delim != end)
5295                                 *delim = ',';
5296                         curr = delim + 1;
5297                 }
5298
5299                 for (i = 0; i < 2; i++) {
5300                         char locality = ld[i];
5301                         if (locality == 0)
5302                                 continue;
5303
5304                         if (!nvlist_empty(base_nvl)) {
5305                                 if (who != NULL)
5306                                         (void) snprintf(who_buf,
5307                                             sizeof (who_buf), "%c%c$%s",
5308                                             base_type, locality, who);
5309                                 else
5310                                         (void) snprintf(who_buf,
5311                                             sizeof (who_buf), "%c%c$",
5312                                             base_type, locality);
5313
5314                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5315                                     base_nvl);
5316                         }
5317
5318
5319                         if (!nvlist_empty(set_nvl)) {
5320                                 if (who != NULL)
5321                                         (void) snprintf(who_buf,
5322                                             sizeof (who_buf), "%c%c$%s",
5323                                             set_type, locality, who);
5324                                 else
5325                                         (void) snprintf(who_buf,
5326                                             sizeof (who_buf), "%c%c$",
5327                                             set_type, locality);
5328
5329                                 (void) nvlist_add_nvlist(top_nvl, who_buf,
5330                                     set_nvl);
5331                         }
5332                 }
5333         } else {
5334                 for (i = 0; i < 2; i++) {
5335                         char locality = ld[i];
5336                         if (locality == 0)
5337                                 continue;
5338
5339                         if (who != NULL)
5340                                 (void) snprintf(who_buf, sizeof (who_buf),
5341                                     "%c%c$%s", base_type, locality, who);
5342                         else
5343                                 (void) snprintf(who_buf, sizeof (who_buf),
5344                                     "%c%c$", base_type, locality);
5345                         (void) nvlist_add_boolean(top_nvl, who_buf);
5346
5347                         if (who != NULL)
5348                                 (void) snprintf(who_buf, sizeof (who_buf),
5349                                     "%c%c$%s", set_type, locality, who);
5350                         else
5351                                 (void) snprintf(who_buf, sizeof (who_buf),
5352                                     "%c%c$", set_type, locality);
5353                         (void) nvlist_add_boolean(top_nvl, who_buf);
5354                 }
5355         }
5356 }
5357
5358 static int
5359 construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
5360 {
5361         if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
5362                 nomem();
5363
5364         if (opts->set) {
5365                 store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
5366                     opts->descend, opts->who, opts->perms, *nvlp);
5367         } else if (opts->create) {
5368                 store_allow_perm(ZFS_DELEG_CREATE, opts->local,
5369                     opts->descend, NULL, opts->perms, *nvlp);
5370         } else if (opts->everyone) {
5371                 store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
5372                     opts->descend, NULL, opts->perms, *nvlp);
5373         } else {
5374                 char *curr = opts->who;
5375                 char *end = curr + strlen(curr);
5376
5377                 while (curr < end) {
5378                         const char *who;
5379                         zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
5380                         char *endch;
5381                         char *delim = strchr(curr, ',');
5382                         char errbuf[256];
5383                         char id[64];
5384                         struct passwd *p = NULL;
5385                         struct group *g = NULL;
5386
5387                         uid_t rid;
5388                         if (delim == NULL)
5389                                 delim = end;
5390                         else
5391                                 *delim = '\0';
5392
5393                         rid = (uid_t)strtol(curr, &endch, 0);
5394                         if (opts->user) {
5395                                 who_type = ZFS_DELEG_USER;
5396                                 if (*endch != '\0')
5397                                         p = getpwnam(curr);
5398                                 else
5399                                         p = getpwuid(rid);
5400
5401                                 if (p != NULL)
5402                                         rid = p->pw_uid;
5403                                 else {
5404                                         (void) snprintf(errbuf, 256, gettext(
5405                                             "invalid user %s"), curr);
5406                                         allow_usage(un, B_TRUE, errbuf);
5407                                 }
5408                         } else if (opts->group) {
5409                                 who_type = ZFS_DELEG_GROUP;
5410                                 if (*endch != '\0')
5411                                         g = getgrnam(curr);
5412                                 else
5413                                         g = getgrgid(rid);
5414
5415                                 if (g != NULL)
5416                                         rid = g->gr_gid;
5417                                 else {
5418                                         (void) snprintf(errbuf, 256, gettext(
5419                                             "invalid group %s"),  curr);
5420                                         allow_usage(un, B_TRUE, errbuf);
5421                                 }
5422                         } else {
5423                                 if (*endch != '\0') {
5424                                         p = getpwnam(curr);
5425                                 } else {
5426                                         p = getpwuid(rid);
5427                                 }
5428
5429                                 if (p == NULL) {
5430                                         if (*endch != '\0') {
5431                                                 g = getgrnam(curr);
5432                                         } else {
5433                                                 g = getgrgid(rid);
5434                                         }
5435                                 }
5436
5437                                 if (p != NULL) {
5438                                         who_type = ZFS_DELEG_USER;
5439                                         rid = p->pw_uid;
5440                                 } else if (g != NULL) {
5441                                         who_type = ZFS_DELEG_GROUP;
5442                                         rid = g->gr_gid;
5443                                 } else {
5444                                         (void) snprintf(errbuf, 256, gettext(
5445                                             "invalid user/group %s"), curr);
5446                                         allow_usage(un, B_TRUE, errbuf);
5447                                 }
5448                         }
5449
5450                         (void) sprintf(id, "%u", rid);
5451                         who = id;
5452
5453                         store_allow_perm(who_type, opts->local,
5454                             opts->descend, who, opts->perms, *nvlp);
5455                         curr = delim + 1;
5456                 }
5457         }
5458
5459         return (0);
5460 }
5461
5462 static void
5463 print_set_creat_perms(uu_avl_t *who_avl)
5464 {
5465         const char *sc_title[] = {
5466                 gettext("Permission sets:\n"),
5467                 gettext("Create time permissions:\n"),
5468                 NULL
5469         };
5470         const char **title_ptr = sc_title;
5471         who_perm_node_t *who_node = NULL;
5472         int prev_weight = -1;
5473
5474         for (who_node = uu_avl_first(who_avl); who_node != NULL;
5475             who_node = uu_avl_next(who_avl, who_node)) {
5476                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5477                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5478                 const char *who_name = who_node->who_perm.who_name;
5479                 int weight = who_type2weight(who_type);
5480                 boolean_t first = B_TRUE;
5481                 deleg_perm_node_t *deleg_node;
5482
5483                 if (prev_weight != weight) {
5484                         (void) printf("%s", *title_ptr++);
5485                         prev_weight = weight;
5486                 }
5487
5488                 if (who_name == NULL || strnlen(who_name, 1) == 0)
5489                         (void) printf("\t");
5490                 else
5491                         (void) printf("\t%s ", who_name);
5492
5493                 for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
5494                     deleg_node = uu_avl_next(avl, deleg_node)) {
5495                         if (first) {
5496                                 (void) printf("%s",
5497                                     deleg_node->dpn_perm.dp_name);
5498                                 first = B_FALSE;
5499                         } else
5500                                 (void) printf(",%s",
5501                                     deleg_node->dpn_perm.dp_name);
5502                 }
5503
5504                 (void) printf("\n");
5505         }
5506 }
5507
5508 static void
5509 print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
5510     const char *title)
5511 {
5512         who_perm_node_t *who_node = NULL;
5513         boolean_t prt_title = B_TRUE;
5514         uu_avl_walk_t *walk;
5515
5516         if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
5517                 nomem();
5518
5519         while ((who_node = uu_avl_walk_next(walk)) != NULL) {
5520                 const char *who_name = who_node->who_perm.who_name;
5521                 const char *nice_who_name = who_node->who_perm.who_ug_name;
5522                 uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
5523                 zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
5524                 char delim = ' ';
5525                 deleg_perm_node_t *deleg_node;
5526                 boolean_t prt_who = B_TRUE;
5527
5528                 for (deleg_node = uu_avl_first(avl);
5529                     deleg_node != NULL;
5530                     deleg_node = uu_avl_next(avl, deleg_node)) {
5531                         if (local != deleg_node->dpn_perm.dp_local ||
5532                             descend != deleg_node->dpn_perm.dp_descend)
5533                                 continue;
5534
5535                         if (prt_who) {
5536                                 const char *who = NULL;
5537                                 if (prt_title) {
5538                                         prt_title = B_FALSE;
5539                                         (void) printf("%s", title);
5540                                 }
5541
5542                                 switch (who_type) {
5543                                 case ZFS_DELEG_USER_SETS:
5544                                 case ZFS_DELEG_USER:
5545                                         who = gettext("user");
5546                                         if (nice_who_name)
5547                                                 who_name  = nice_who_name;
5548                                         break;
5549                                 case ZFS_DELEG_GROUP_SETS:
5550                                 case ZFS_DELEG_GROUP:
5551                                         who = gettext("group");
5552                                         if (nice_who_name)
5553                                                 who_name  = nice_who_name;
5554                                         break;
5555                                 case ZFS_DELEG_EVERYONE_SETS:
5556                                 case ZFS_DELEG_EVERYONE:
5557                                         who = gettext("everyone");
5558                                         who_name = NULL;
5559                                         break;
5560
5561                                 default:
5562                                         assert(who != NULL);
5563                                 }
5564
5565                                 prt_who = B_FALSE;
5566                                 if (who_name == NULL)
5567                                         (void) printf("\t%s", who);
5568                                 else
5569                                         (void) printf("\t%s %s", who, who_name);
5570                         }
5571
5572                         (void) printf("%c%s", delim,
5573                             deleg_node->dpn_perm.dp_name);
5574                         delim = ',';
5575                 }
5576
5577                 if (!prt_who)
5578                         (void) printf("\n");
5579         }
5580
5581         uu_avl_walk_end(walk);
5582 }
5583
5584 static void
5585 print_fs_perms(fs_perm_set_t *fspset)
5586 {
5587         fs_perm_node_t *node = NULL;
5588         char buf[MAXNAMELEN + 32];
5589         const char *dsname = buf;
5590
5591         for (node = uu_list_first(fspset->fsps_list); node != NULL;
5592             node = uu_list_next(fspset->fsps_list, node)) {
5593                 uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
5594                 uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
5595                 int left = 0;
5596
5597                 (void) snprintf(buf, sizeof (buf),
5598                     gettext("---- Permissions on %s "),
5599                     node->fspn_fsperm.fsp_name);
5600                 (void) printf("%s", dsname);
5601                 left = 70 - strlen(buf);
5602                 while (left-- > 0)
5603                         (void) printf("-");
5604                 (void) printf("\n");
5605
5606                 print_set_creat_perms(sc_avl);
5607                 print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
5608                     gettext("Local permissions:\n"));
5609                 print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
5610                     gettext("Descendent permissions:\n"));
5611                 print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
5612                     gettext("Local+Descendent permissions:\n"));
5613         }
5614 }
5615
5616 static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
5617
5618 struct deleg_perms {
5619         boolean_t un;
5620         nvlist_t *nvl;
5621 };
5622
5623 static int
5624 set_deleg_perms(zfs_handle_t *zhp, void *data)
5625 {
5626         struct deleg_perms *perms = (struct deleg_perms *)data;
5627         zfs_type_t zfs_type = zfs_get_type(zhp);
5628
5629         if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
5630                 return (0);
5631
5632         return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
5633 }
5634
5635 static int
5636 zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
5637 {
5638         zfs_handle_t *zhp;
5639         nvlist_t *perm_nvl = NULL;
5640         nvlist_t *update_perm_nvl = NULL;
5641         int error = 1;
5642         int c;
5643         struct allow_opts opts = { 0 };
5644
5645         const char *optstr = un ? "ldugecsrh" : "ldugecsh";
5646
5647         /* check opts */
5648         while ((c = getopt(argc, argv, optstr)) != -1) {
5649                 switch (c) {
5650                 case 'l':
5651                         opts.local = B_TRUE;
5652                         break;
5653                 case 'd':
5654                         opts.descend = B_TRUE;
5655                         break;
5656                 case 'u':
5657                         opts.user = B_TRUE;
5658                         break;
5659                 case 'g':
5660                         opts.group = B_TRUE;
5661                         break;
5662                 case 'e':
5663                         opts.everyone = B_TRUE;
5664                         break;
5665                 case 's':
5666                         opts.set = B_TRUE;
5667                         break;
5668                 case 'c':
5669                         opts.create = B_TRUE;
5670                         break;
5671                 case 'r':
5672                         opts.recursive = B_TRUE;
5673                         break;
5674                 case ':':
5675                         (void) fprintf(stderr, gettext("missing argument for "
5676                             "'%c' option\n"), optopt);
5677                         usage(B_FALSE);
5678                         break;
5679                 case 'h':
5680                         opts.prt_usage = B_TRUE;
5681                         break;
5682                 case '?':
5683                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5684                             optopt);
5685                         usage(B_FALSE);
5686                 }
5687         }
5688
5689         argc -= optind;
5690         argv += optind;
5691
5692         /* check arguments */
5693         parse_allow_args(argc, argv, un, &opts);
5694
5695         /* try to open the dataset */
5696         if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
5697             ZFS_TYPE_VOLUME)) == NULL) {
5698                 (void) fprintf(stderr, "Failed to open dataset: %s\n",
5699                     opts.dataset);
5700                 return (-1);
5701         }
5702
5703         if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
5704                 goto cleanup2;
5705
5706         fs_perm_set_init(&fs_perm_set);
5707         if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
5708                 (void) fprintf(stderr, "Failed to parse fsacl permissions\n");
5709                 goto cleanup1;
5710         }
5711
5712         if (opts.prt_perms)
5713                 print_fs_perms(&fs_perm_set);
5714         else {
5715                 (void) construct_fsacl_list(un, &opts, &update_perm_nvl);
5716                 if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
5717                         goto cleanup0;
5718
5719                 if (un && opts.recursive) {
5720                         struct deleg_perms data = { un, update_perm_nvl };
5721                         if (zfs_iter_filesystems(zhp, set_deleg_perms,
5722                             &data) != 0)
5723                                 goto cleanup0;
5724                 }
5725         }
5726
5727         error = 0;
5728
5729 cleanup0:
5730         nvlist_free(perm_nvl);
5731         nvlist_free(update_perm_nvl);
5732 cleanup1:
5733         fs_perm_set_fini(&fs_perm_set);
5734 cleanup2:
5735         zfs_close(zhp);
5736
5737         return (error);
5738 }
5739
5740 static int
5741 zfs_do_allow(int argc, char **argv)
5742 {
5743         return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
5744 }
5745
5746 static int
5747 zfs_do_unallow(int argc, char **argv)
5748 {
5749         return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
5750 }
5751
5752 static int
5753 zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
5754 {
5755         int errors = 0;
5756         int i;
5757         const char *tag;
5758         boolean_t recursive = B_FALSE;
5759         const char *opts = holding ? "rt" : "r";
5760         int c;
5761
5762         /* check options */
5763         while ((c = getopt(argc, argv, opts)) != -1) {
5764                 switch (c) {
5765                 case 'r':
5766                         recursive = B_TRUE;
5767                         break;
5768                 case '?':
5769                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5770                             optopt);
5771                         usage(B_FALSE);
5772                 }
5773         }
5774
5775         argc -= optind;
5776         argv += optind;
5777
5778         /* check number of arguments */
5779         if (argc < 2)
5780                 usage(B_FALSE);
5781
5782         tag = argv[0];
5783         --argc;
5784         ++argv;
5785
5786         if (holding && tag[0] == '.') {
5787                 /* tags starting with '.' are reserved for libzfs */
5788                 (void) fprintf(stderr, gettext("tag may not start with '.'\n"));
5789                 usage(B_FALSE);
5790         }
5791
5792         for (i = 0; i < argc; ++i) {
5793                 zfs_handle_t *zhp;
5794                 char parent[ZFS_MAX_DATASET_NAME_LEN];
5795                 const char *delim;
5796                 char *path = argv[i];
5797
5798                 delim = strchr(path, '@');
5799                 if (delim == NULL) {
5800                         (void) fprintf(stderr,
5801                             gettext("'%s' is not a snapshot\n"), path);
5802                         ++errors;
5803                         continue;
5804                 }
5805                 (void) strncpy(parent, path, delim - path);
5806                 parent[delim - path] = '\0';
5807
5808                 zhp = zfs_open(g_zfs, parent,
5809                     ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
5810                 if (zhp == NULL) {
5811                         ++errors;
5812                         continue;
5813                 }
5814                 if (holding) {
5815                         if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
5816                                 ++errors;
5817                 } else {
5818                         if (zfs_release(zhp, delim+1, tag, recursive) != 0)
5819                                 ++errors;
5820                 }
5821                 zfs_close(zhp);
5822         }
5823
5824         return (errors != 0);
5825 }
5826
5827 /*
5828  * zfs hold [-r] [-t] <tag> <snap> ...
5829  *
5830  *      -r      Recursively hold
5831  *
5832  * Apply a user-hold with the given tag to the list of snapshots.
5833  */
5834 static int
5835 zfs_do_hold(int argc, char **argv)
5836 {
5837         return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
5838 }
5839
5840 /*
5841  * zfs release [-r] <tag> <snap> ...
5842  *
5843  *      -r      Recursively release
5844  *
5845  * Release a user-hold with the given tag from the list of snapshots.
5846  */
5847 static int
5848 zfs_do_release(int argc, char **argv)
5849 {
5850         return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
5851 }
5852
5853 typedef struct holds_cbdata {
5854         boolean_t       cb_recursive;
5855         const char      *cb_snapname;
5856         nvlist_t        **cb_nvlp;
5857         size_t          cb_max_namelen;
5858         size_t          cb_max_taglen;
5859 } holds_cbdata_t;
5860
5861 #define STRFTIME_FMT_STR "%a %b %e %k:%M %Y"
5862 #define DATETIME_BUF_LEN (32)
5863 /*
5864  *
5865  */
5866 static void
5867 print_holds(boolean_t scripted, int nwidth, int tagwidth, nvlist_t *nvl)
5868 {
5869         int i;
5870         nvpair_t *nvp = NULL;
5871         char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
5872         const char *col;
5873
5874         if (!scripted) {
5875                 for (i = 0; i < 3; i++) {
5876                         col = gettext(hdr_cols[i]);
5877                         if (i < 2)
5878                                 (void) printf("%-*s  ", i ? tagwidth : nwidth,
5879                                     col);
5880                         else
5881                                 (void) printf("%s\n", col);
5882                 }
5883         }
5884
5885         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5886                 char *zname = nvpair_name(nvp);
5887                 nvlist_t *nvl2;
5888                 nvpair_t *nvp2 = NULL;
5889                 (void) nvpair_value_nvlist(nvp, &nvl2);
5890                 while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
5891                         char tsbuf[DATETIME_BUF_LEN];
5892                         char *tagname = nvpair_name(nvp2);
5893                         uint64_t val = 0;
5894                         time_t time;
5895                         struct tm t;
5896
5897                         (void) nvpair_value_uint64(nvp2, &val);
5898                         time = (time_t)val;
5899                         (void) localtime_r(&time, &t);
5900                         (void) strftime(tsbuf, DATETIME_BUF_LEN,
5901                             gettext(STRFTIME_FMT_STR), &t);
5902
5903                         if (scripted) {
5904                                 (void) printf("%s\t%s\t%s\n", zname,
5905                                     tagname, tsbuf);
5906                         } else {
5907                                 (void) printf("%-*s  %-*s  %s\n", nwidth,
5908                                     zname, tagwidth, tagname, tsbuf);
5909                         }
5910                 }
5911         }
5912 }
5913
5914 /*
5915  * Generic callback function to list a dataset or snapshot.
5916  */
5917 static int
5918 holds_callback(zfs_handle_t *zhp, void *data)
5919 {
5920         holds_cbdata_t *cbp = data;
5921         nvlist_t *top_nvl = *cbp->cb_nvlp;
5922         nvlist_t *nvl = NULL;
5923         nvpair_t *nvp = NULL;
5924         const char *zname = zfs_get_name(zhp);
5925         size_t znamelen = strlen(zname);
5926
5927         if (cbp->cb_recursive) {
5928                 const char *snapname;
5929                 char *delim  = strchr(zname, '@');
5930                 if (delim == NULL)
5931                         return (0);
5932
5933                 snapname = delim + 1;
5934                 if (strcmp(cbp->cb_snapname, snapname))
5935                         return (0);
5936         }
5937
5938         if (zfs_get_holds(zhp, &nvl) != 0)
5939                 return (-1);
5940
5941         if (znamelen > cbp->cb_max_namelen)
5942                 cbp->cb_max_namelen  = znamelen;
5943
5944         while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
5945                 const char *tag = nvpair_name(nvp);
5946                 size_t taglen = strlen(tag);
5947                 if (taglen > cbp->cb_max_taglen)
5948                         cbp->cb_max_taglen  = taglen;
5949         }
5950
5951         return (nvlist_add_nvlist(top_nvl, zname, nvl));
5952 }
5953
5954 /*
5955  * zfs holds [-r] <snap> ...
5956  *
5957  *      -r      Recursively hold
5958  */
5959 static int
5960 zfs_do_holds(int argc, char **argv)
5961 {
5962         int errors = 0;
5963         int c;
5964         int i;
5965         boolean_t scripted = B_FALSE;
5966         boolean_t recursive = B_FALSE;
5967         const char *opts = "rH";
5968         nvlist_t *nvl;
5969
5970         int types = ZFS_TYPE_SNAPSHOT;
5971         holds_cbdata_t cb = { 0 };
5972
5973         int limit = 0;
5974         int ret = 0;
5975         int flags = 0;
5976
5977         /* check options */
5978         while ((c = getopt(argc, argv, opts)) != -1) {
5979                 switch (c) {
5980                 case 'r':
5981                         recursive = B_TRUE;
5982                         break;
5983                 case 'H':
5984                         scripted = B_TRUE;
5985                         break;
5986                 case '?':
5987                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
5988                             optopt);
5989                         usage(B_FALSE);
5990                 }
5991         }
5992
5993         if (recursive) {
5994                 types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
5995                 flags |= ZFS_ITER_RECURSE;
5996         }
5997
5998         argc -= optind;
5999         argv += optind;
6000
6001         /* check number of arguments */
6002         if (argc < 1)
6003                 usage(B_FALSE);
6004
6005         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
6006                 nomem();
6007
6008         for (i = 0; i < argc; ++i) {
6009                 char *snapshot = argv[i];
6010                 const char *delim;
6011                 const char *snapname;
6012
6013                 delim = strchr(snapshot, '@');
6014                 if (delim == NULL) {
6015                         (void) fprintf(stderr,
6016                             gettext("'%s' is not a snapshot\n"), snapshot);
6017                         ++errors;
6018                         continue;
6019                 }
6020                 snapname = delim + 1;
6021                 if (recursive)
6022                         snapshot[delim - snapshot] = '\0';
6023
6024                 cb.cb_recursive = recursive;
6025                 cb.cb_snapname = snapname;
6026                 cb.cb_nvlp = &nvl;
6027
6028                 /*
6029                  *  1. collect holds data, set format options
6030                  */
6031                 ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
6032                     holds_callback, &cb);
6033                 if (ret != 0)
6034                         ++errors;
6035         }
6036
6037         /*
6038          *  2. print holds data
6039          */
6040         print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
6041
6042         if (nvlist_empty(nvl))
6043                 (void) fprintf(stderr, gettext("no datasets available\n"));
6044
6045         nvlist_free(nvl);
6046
6047         return (0 != errors);
6048 }
6049
6050 #define CHECK_SPINNER 30
6051 #define SPINNER_TIME 3          /* seconds */
6052 #define MOUNT_TIME 5            /* seconds */
6053
6054 static int
6055 get_one_dataset(zfs_handle_t *zhp, void *data)
6056 {
6057         static char *spin[] = { "-", "\\", "|", "/" };
6058         static int spinval = 0;
6059         static int spincheck = 0;
6060         static time_t last_spin_time = (time_t)0;
6061         get_all_cb_t *cbp = data;
6062         zfs_type_t type = zfs_get_type(zhp);
6063
6064         if (cbp->cb_verbose) {
6065                 if (--spincheck < 0) {
6066                         time_t now = time(NULL);
6067                         if (last_spin_time + SPINNER_TIME < now) {
6068                                 update_progress(spin[spinval++ % 4]);
6069                                 last_spin_time = now;
6070                         }
6071                         spincheck = CHECK_SPINNER;
6072                 }
6073         }
6074
6075         /*
6076          * Iterate over any nested datasets.
6077          */
6078         if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
6079                 zfs_close(zhp);
6080                 return (1);
6081         }
6082
6083         /*
6084          * Skip any datasets whose type does not match.
6085          */
6086         if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
6087                 zfs_close(zhp);
6088                 return (0);
6089         }
6090         libzfs_add_handle(cbp, zhp);
6091         assert(cbp->cb_used <= cbp->cb_alloc);
6092
6093         return (0);
6094 }
6095
6096 static void
6097 get_all_datasets(zfs_handle_t ***dslist, size_t *count, boolean_t verbose)
6098 {
6099         get_all_cb_t cb = { 0 };
6100         cb.cb_verbose = verbose;
6101         cb.cb_getone = get_one_dataset;
6102
6103         if (verbose)
6104                 set_progress_header(gettext("Reading ZFS config"));
6105         (void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
6106
6107         *dslist = cb.cb_handles;
6108         *count = cb.cb_used;
6109
6110         if (verbose)
6111                 finish_progress(gettext("done."));
6112 }
6113
6114 /*
6115  * Generic callback for sharing or mounting filesystems.  Because the code is so
6116  * similar, we have a common function with an extra parameter to determine which
6117  * mode we are using.
6118  */
6119 #define OP_SHARE        0x1
6120 #define OP_MOUNT        0x2
6121
6122 /*
6123  * Share or mount a dataset.
6124  */
6125 static int
6126 share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
6127     boolean_t explicit, const char *options)
6128 {
6129         char mountpoint[ZFS_MAXPROPLEN];
6130         char shareopts[ZFS_MAXPROPLEN];
6131         char smbshareopts[ZFS_MAXPROPLEN];
6132         const char *cmdname = op == OP_SHARE ? "share" : "mount";
6133         struct mnttab mnt;
6134         uint64_t zoned, canmount;
6135         boolean_t shared_nfs, shared_smb;
6136
6137         assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
6138
6139         /*
6140          * Check to make sure we can mount/share this dataset.  If we
6141          * are in the global zone and the filesystem is exported to a
6142          * local zone, or if we are in a local zone and the
6143          * filesystem is not exported, then it is an error.
6144          */
6145         zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
6146
6147         if (zoned && getzoneid() == GLOBAL_ZONEID) {
6148                 if (!explicit)
6149                         return (0);
6150
6151                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6152                     "dataset is exported to a local zone\n"), cmdname,
6153                     zfs_get_name(zhp));
6154                 return (1);
6155
6156         } else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
6157                 if (!explicit)
6158                         return (0);
6159
6160                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6161                     "permission denied\n"), cmdname,
6162                     zfs_get_name(zhp));
6163                 return (1);
6164         }
6165
6166         /*
6167          * Ignore any filesystems which don't apply to us. This
6168          * includes those with a legacy mountpoint, or those with
6169          * legacy share options.
6170          */
6171         verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
6172             sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
6173         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
6174             sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
6175         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
6176             sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
6177
6178         if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
6179             strcmp(smbshareopts, "off") == 0) {
6180                 if (!explicit)
6181                         return (0);
6182
6183                 (void) fprintf(stderr, gettext("cannot share '%s': "
6184                     "legacy share\n"), zfs_get_name(zhp));
6185                 (void) fprintf(stderr, gettext("use share(1M) to "
6186                     "share this filesystem, or set "
6187                     "sharenfs property on\n"));
6188                 return (1);
6189         }
6190
6191         /*
6192          * We cannot share or mount legacy filesystems. If the
6193          * shareopts is non-legacy but the mountpoint is legacy, we
6194          * treat it as a legacy share.
6195          */
6196         if (strcmp(mountpoint, "legacy") == 0) {
6197                 if (!explicit)
6198                         return (0);
6199
6200                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6201                     "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
6202                 (void) fprintf(stderr, gettext("use %s(1M) to "
6203                     "%s this filesystem\n"), cmdname, cmdname);
6204                 return (1);
6205         }
6206
6207         if (strcmp(mountpoint, "none") == 0) {
6208                 if (!explicit)
6209                         return (0);
6210
6211                 (void) fprintf(stderr, gettext("cannot %s '%s': no "
6212                     "mountpoint set\n"), cmdname, zfs_get_name(zhp));
6213                 return (1);
6214         }
6215
6216         /*
6217          * canmount     explicit        outcome
6218          * on           no              pass through
6219          * on           yes             pass through
6220          * off          no              return 0
6221          * off          yes             display error, return 1
6222          * noauto       no              return 0
6223          * noauto       yes             pass through
6224          */
6225         canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
6226         if (canmount == ZFS_CANMOUNT_OFF) {
6227                 if (!explicit)
6228                         return (0);
6229
6230                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6231                     "'canmount' property is set to 'off'\n"), cmdname,
6232                     zfs_get_name(zhp));
6233                 return (1);
6234         } else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
6235                 return (0);
6236         }
6237
6238         /*
6239          * If this filesystem is encrypted and does not have
6240          * a loaded key, we can not mount it.
6241          */
6242         if ((flags & MS_CRYPT) == 0 &&
6243             zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) != ZIO_CRYPT_OFF &&
6244             zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS) ==
6245             ZFS_KEYSTATUS_UNAVAILABLE) {
6246                 if (!explicit)
6247                         return (0);
6248
6249                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6250                     "encryption key not loaded\n"), cmdname, zfs_get_name(zhp));
6251                 return (1);
6252         }
6253
6254         /*
6255          * If this filesystem is inconsistent and has a receive resume
6256          * token, we can not mount it.
6257          */
6258         if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
6259             zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
6260             NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
6261                 if (!explicit)
6262                         return (0);
6263
6264                 (void) fprintf(stderr, gettext("cannot %s '%s': "
6265                     "Contains partially-completed state from "
6266                     "\"zfs receive -s\", which can be resumed with "
6267                     "\"zfs send -t\"\n"),
6268                     cmdname, zfs_get_name(zhp));
6269                 return (1);
6270         }
6271
6272         /*
6273          * At this point, we have verified that the mountpoint and/or
6274          * shareopts are appropriate for auto management. If the
6275          * filesystem is already mounted or shared, return (failing
6276          * for explicit requests); otherwise mount or share the
6277          * filesystem.
6278          */
6279         switch (op) {
6280         case OP_SHARE:
6281
6282                 shared_nfs = zfs_is_shared_nfs(zhp, NULL);
6283                 shared_smb = zfs_is_shared_smb(zhp, NULL);
6284
6285                 if ((shared_nfs && shared_smb) ||
6286                     (shared_nfs && strcmp(shareopts, "on") == 0 &&
6287                     strcmp(smbshareopts, "off") == 0) ||
6288                     (shared_smb && strcmp(smbshareopts, "on") == 0 &&
6289                     strcmp(shareopts, "off") == 0)) {
6290                         if (!explicit)
6291                                 return (0);
6292
6293                         (void) fprintf(stderr, gettext("cannot share "
6294                             "'%s': filesystem already shared\n"),
6295                             zfs_get_name(zhp));
6296                         return (1);
6297                 }
6298
6299                 if (!zfs_is_mounted(zhp, NULL) &&
6300                     zfs_mount(zhp, NULL, flags) != 0)
6301                         return (1);
6302
6303                 if (protocol == NULL) {
6304                         if (zfs_shareall(zhp) != 0)
6305                                 return (1);
6306                 } else if (strcmp(protocol, "nfs") == 0) {
6307                         if (zfs_share_nfs(zhp))
6308                                 return (1);
6309                 } else if (strcmp(protocol, "smb") == 0) {
6310                         if (zfs_share_smb(zhp))
6311                                 return (1);
6312                 } else {
6313                         (void) fprintf(stderr, gettext("cannot share "
6314                             "'%s': invalid share type '%s' "
6315                             "specified\n"),
6316                             zfs_get_name(zhp), protocol);
6317                         return (1);
6318                 }
6319
6320                 break;
6321
6322         case OP_MOUNT:
6323                 if (options == NULL)
6324                         mnt.mnt_mntopts = "";
6325                 else
6326                         mnt.mnt_mntopts = (char *)options;
6327
6328                 if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
6329                     zfs_is_mounted(zhp, NULL)) {
6330                         if (!explicit)
6331                                 return (0);
6332
6333                         (void) fprintf(stderr, gettext("cannot mount "
6334                             "'%s': filesystem already mounted\n"),
6335                             zfs_get_name(zhp));
6336                         return (1);
6337                 }
6338
6339                 if (zfs_mount(zhp, options, flags) != 0)
6340                         return (1);
6341                 break;
6342         }
6343
6344         return (0);
6345 }
6346
6347 /*
6348  * Reports progress in the form "(current/total)".  Not thread-safe.
6349  */
6350 static void
6351 report_mount_progress(int current, int total)
6352 {
6353         static time_t last_progress_time = 0;
6354         time_t now = time(NULL);
6355         char info[32];
6356
6357         /* report 1..n instead of 0..n-1 */
6358         ++current;
6359
6360         /* display header if we're here for the first time */
6361         if (current == 1) {
6362                 set_progress_header(gettext("Mounting ZFS filesystems"));
6363         } else if (current != total && last_progress_time + MOUNT_TIME >= now) {
6364                 /* too soon to report again */
6365                 return;
6366         }
6367
6368         last_progress_time = now;
6369
6370         (void) sprintf(info, "(%d/%d)", current, total);
6371
6372         if (current == total)
6373                 finish_progress(info);
6374         else
6375                 update_progress(info);
6376 }
6377
6378 static void
6379 append_options(char *mntopts, char *newopts)
6380 {
6381         int len = strlen(mntopts);
6382
6383         /* original length plus new string to append plus 1 for the comma */
6384         if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
6385                 (void) fprintf(stderr, gettext("the opts argument for "
6386                     "'%s' option is too long (more than %d chars)\n"),
6387                     "-o", MNT_LINE_MAX);
6388                 usage(B_FALSE);
6389         }
6390
6391         if (*mntopts)
6392                 mntopts[len++] = ',';
6393
6394         (void) strcpy(&mntopts[len], newopts);
6395 }
6396
6397 static int
6398 share_mount(int op, int argc, char **argv)
6399 {
6400         int do_all = 0;
6401         boolean_t verbose = B_FALSE;
6402         int c, ret = 0;
6403         char *options = NULL;
6404         int flags = 0;
6405
6406         /* check options */
6407         while ((c = getopt(argc, argv, op == OP_MOUNT ? ":alvo:O" : "al"))
6408             != -1) {
6409                 switch (c) {
6410                 case 'a':
6411                         do_all = 1;
6412                         break;
6413                 case 'v':
6414                         verbose = B_TRUE;
6415                         break;
6416                 case 'l':
6417                         flags |= MS_CRYPT;
6418                         break;
6419                 case 'o':
6420                         if (*optarg == '\0') {
6421                                 (void) fprintf(stderr, gettext("empty mount "
6422                                     "options (-o) specified\n"));
6423                                 usage(B_FALSE);
6424                         }
6425
6426                         if (options == NULL)
6427                                 options = safe_malloc(MNT_LINE_MAX + 1);
6428
6429                         /* option validation is done later */
6430                         append_options(options, optarg);
6431                         break;
6432                 case 'O':
6433                         flags |= MS_OVERLAY;
6434                         break;
6435                 case ':':
6436                         (void) fprintf(stderr, gettext("missing argument for "
6437                             "'%c' option\n"), optopt);
6438                         usage(B_FALSE);
6439                         break;
6440                 case '?':
6441                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6442                             optopt);
6443                         usage(B_FALSE);
6444                 }
6445         }
6446
6447         argc -= optind;
6448         argv += optind;
6449
6450         /* check number of arguments */
6451         if (do_all) {
6452                 zfs_handle_t **dslist = NULL;
6453                 size_t i, count = 0;
6454                 char *protocol = NULL;
6455
6456                 if (op == OP_SHARE && argc > 0) {
6457                         if (strcmp(argv[0], "nfs") != 0 &&
6458                             strcmp(argv[0], "smb") != 0) {
6459                                 (void) fprintf(stderr, gettext("share type "
6460                                     "must be 'nfs' or 'smb'\n"));
6461                                 usage(B_FALSE);
6462                         }
6463                         protocol = argv[0];
6464                         argc--;
6465                         argv++;
6466                 }
6467
6468                 if (argc != 0) {
6469                         (void) fprintf(stderr, gettext("too many arguments\n"));
6470                         usage(B_FALSE);
6471                 }
6472
6473                 start_progress_timer();
6474                 get_all_datasets(&dslist, &count, verbose);
6475
6476                 if (count == 0) {
6477                         if (options != NULL)
6478                                 free(options);
6479                         return (0);
6480                 }
6481
6482                 qsort(dslist, count, sizeof (void *), libzfs_dataset_cmp);
6483
6484                 for (i = 0; i < count; i++) {
6485                         if (verbose)
6486                                 report_mount_progress(i, count);
6487
6488                         if (share_mount_one(dslist[i], op, flags, protocol,
6489                             B_FALSE, options) != 0)
6490                                 ret = 1;
6491                         zfs_close(dslist[i]);
6492                 }
6493
6494                 free(dslist);
6495         } else if (argc == 0) {
6496                 struct mnttab entry;
6497
6498                 if ((op == OP_SHARE) || (options != NULL)) {
6499                         (void) fprintf(stderr, gettext("missing filesystem "
6500                             "argument (specify -a for all)\n"));
6501                         usage(B_FALSE);
6502                 }
6503
6504                 /*
6505                  * When mount is given no arguments, go through
6506                  * /proc/self/mounts and display any active ZFS mounts.
6507                  * We hide any snapshots, since they are controlled
6508                  * automatically.
6509                  */
6510
6511                 /* Reopen MNTTAB to prevent reading stale data from open file */
6512                 if (freopen(MNTTAB, "r", mnttab_file) == NULL) {
6513                         if (options != NULL)
6514                                 free(options);
6515                         return (ENOENT);
6516                 }
6517
6518                 while (getmntent(mnttab_file, &entry) == 0) {
6519                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
6520                             strchr(entry.mnt_special, '@') != NULL)
6521                                 continue;
6522
6523                         (void) printf("%-30s  %s\n", entry.mnt_special,
6524                             entry.mnt_mountp);
6525                 }
6526
6527         } else {
6528                 zfs_handle_t *zhp;
6529
6530                 if (argc > 1) {
6531                         (void) fprintf(stderr,
6532                             gettext("too many arguments\n"));
6533                         usage(B_FALSE);
6534                 }
6535
6536                 if ((zhp = zfs_open(g_zfs, argv[0],
6537                     ZFS_TYPE_FILESYSTEM)) == NULL) {
6538                         ret = 1;
6539                 } else {
6540                         ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
6541                             options);
6542                         zfs_close(zhp);
6543                 }
6544         }
6545
6546         if (options != NULL)
6547                 free(options);
6548
6549         return (ret);
6550 }
6551
6552 /*
6553  * zfs mount -a [nfs]
6554  * zfs mount filesystem
6555  *
6556  * Mount all filesystems, or mount the given filesystem.
6557  */
6558 static int
6559 zfs_do_mount(int argc, char **argv)
6560 {
6561         return (share_mount(OP_MOUNT, argc, argv));
6562 }
6563
6564 /*
6565  * zfs share -a [nfs | smb]
6566  * zfs share filesystem
6567  *
6568  * Share all filesystems, or share the given filesystem.
6569  */
6570 static int
6571 zfs_do_share(int argc, char **argv)
6572 {
6573         return (share_mount(OP_SHARE, argc, argv));
6574 }
6575
6576 typedef struct unshare_unmount_node {
6577         zfs_handle_t    *un_zhp;
6578         char            *un_mountp;
6579         uu_avl_node_t   un_avlnode;
6580 } unshare_unmount_node_t;
6581
6582 /* ARGSUSED */
6583 static int
6584 unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
6585 {
6586         const unshare_unmount_node_t *l = larg;
6587         const unshare_unmount_node_t *r = rarg;
6588
6589         return (strcmp(l->un_mountp, r->un_mountp));
6590 }
6591
6592 /*
6593  * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
6594  * absolute path, find the entry /proc/self/mounts, verify that its a
6595  * ZFS filesystems, and unmount it appropriately.
6596  */
6597 static int
6598 unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
6599 {
6600         zfs_handle_t *zhp;
6601         int ret = 0;
6602         struct stat64 statbuf;
6603         struct extmnttab entry;
6604         const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
6605         ino_t path_inode;
6606
6607         /*
6608          * Search for the path in /proc/self/mounts. Rather than looking for the
6609          * specific path, which can be fooled by non-standard paths (i.e. ".."
6610          * or "//"), we stat() the path and search for the corresponding
6611          * (major,minor) device pair.
6612          */
6613         if (stat64(path, &statbuf) != 0) {
6614                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6615                     cmdname, path, strerror(errno));
6616                 return (1);
6617         }
6618         path_inode = statbuf.st_ino;
6619
6620         /*
6621          * Search for the given (major,minor) pair in the mount table.
6622          */
6623
6624         /* Reopen MNTTAB to prevent reading stale data from open file */
6625         if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6626                 return (ENOENT);
6627
6628         while ((ret = getextmntent(mnttab_file, &entry, 0)) == 0) {
6629                 if (entry.mnt_major == major(statbuf.st_dev) &&
6630                     entry.mnt_minor == minor(statbuf.st_dev))
6631                         break;
6632         }
6633         if (ret != 0) {
6634                 if (op == OP_SHARE) {
6635                         (void) fprintf(stderr, gettext("cannot %s '%s': not "
6636                             "currently mounted\n"), cmdname, path);
6637                         return (1);
6638                 }
6639                 (void) fprintf(stderr, gettext("warning: %s not in"
6640                     "/proc/self/mounts\n"), path);
6641                 if ((ret = umount2(path, flags)) != 0)
6642                         (void) fprintf(stderr, gettext("%s: %s\n"), path,
6643                             strerror(errno));
6644                 return (ret != 0);
6645         }
6646
6647         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
6648                 (void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
6649                     "filesystem\n"), cmdname, path);
6650                 return (1);
6651         }
6652
6653         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6654             ZFS_TYPE_FILESYSTEM)) == NULL)
6655                 return (1);
6656
6657         ret = 1;
6658         if (stat64(entry.mnt_mountp, &statbuf) != 0) {
6659                 (void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
6660                     cmdname, path, strerror(errno));
6661                 goto out;
6662         } else if (statbuf.st_ino != path_inode) {
6663                 (void) fprintf(stderr, gettext("cannot "
6664                     "%s '%s': not a mountpoint\n"), cmdname, path);
6665                 goto out;
6666         }
6667
6668         if (op == OP_SHARE) {
6669                 char nfs_mnt_prop[ZFS_MAXPROPLEN];
6670                 char smbshare_prop[ZFS_MAXPROPLEN];
6671
6672                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
6673                     sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
6674                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
6675                     sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
6676
6677                 if (strcmp(nfs_mnt_prop, "off") == 0 &&
6678                     strcmp(smbshare_prop, "off") == 0) {
6679                         (void) fprintf(stderr, gettext("cannot unshare "
6680                             "'%s': legacy share\n"), path);
6681                         (void) fprintf(stderr, gettext("use exportfs(8) "
6682                             "or smbcontrol(1) to unshare this filesystem\n"));
6683                 } else if (!zfs_is_shared(zhp)) {
6684                         (void) fprintf(stderr, gettext("cannot unshare '%s': "
6685                             "not currently shared\n"), path);
6686                 } else {
6687                         ret = zfs_unshareall_bypath(zhp, path);
6688                 }
6689         } else {
6690                 char mtpt_prop[ZFS_MAXPROPLEN];
6691
6692                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
6693                     sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
6694
6695                 if (is_manual) {
6696                         ret = zfs_unmount(zhp, NULL, flags);
6697                 } else if (strcmp(mtpt_prop, "legacy") == 0) {
6698                         (void) fprintf(stderr, gettext("cannot unmount "
6699                             "'%s': legacy mountpoint\n"),
6700                             zfs_get_name(zhp));
6701                         (void) fprintf(stderr, gettext("use umount(8) "
6702                             "to unmount this filesystem\n"));
6703                 } else {
6704                         ret = zfs_unmountall(zhp, flags);
6705                 }
6706         }
6707
6708 out:
6709         zfs_close(zhp);
6710
6711         return (ret != 0);
6712 }
6713
6714 /*
6715  * Generic callback for unsharing or unmounting a filesystem.
6716  */
6717 static int
6718 unshare_unmount(int op, int argc, char **argv)
6719 {
6720         int do_all = 0;
6721         int flags = 0;
6722         int ret = 0;
6723         int c;
6724         zfs_handle_t *zhp;
6725         char nfs_mnt_prop[ZFS_MAXPROPLEN];
6726         char sharesmb[ZFS_MAXPROPLEN];
6727
6728         /* check options */
6729         while ((c = getopt(argc, argv, op == OP_SHARE ? ":a" : "af")) != -1) {
6730                 switch (c) {
6731                 case 'a':
6732                         do_all = 1;
6733                         break;
6734                 case 'f':
6735                         flags = MS_FORCE;
6736                         break;
6737                 case ':':
6738                         (void) fprintf(stderr, gettext("missing argument for "
6739                             "'%c' option\n"), optopt);
6740                         usage(B_FALSE);
6741                         break;
6742                 case '?':
6743                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
6744                             optopt);
6745                         usage(B_FALSE);
6746                 }
6747         }
6748
6749         argc -= optind;
6750         argv += optind;
6751
6752         if (do_all) {
6753                 /*
6754                  * We could make use of zfs_for_each() to walk all datasets in
6755                  * the system, but this would be very inefficient, especially
6756                  * since we would have to linearly search /proc/self/mounts for
6757                  * each one. Instead, do one pass through /proc/self/mounts
6758                  * looking for zfs entries and call zfs_unmount() for each one.
6759                  *
6760                  * Things get a little tricky if the administrator has created
6761                  * mountpoints beneath other ZFS filesystems.  In this case, we
6762                  * have to unmount the deepest filesystems first.  To accomplish
6763                  * this, we place all the mountpoints in an AVL tree sorted by
6764                  * the special type (dataset name), and walk the result in
6765                  * reverse to make sure to get any snapshots first.
6766                  */
6767                 struct mnttab entry;
6768                 uu_avl_pool_t *pool;
6769                 uu_avl_t *tree = NULL;
6770                 unshare_unmount_node_t *node;
6771                 uu_avl_index_t idx;
6772                 uu_avl_walk_t *walk;
6773                 char *protocol = NULL;
6774
6775                 if (op == OP_SHARE && argc > 0) {
6776                         if (strcmp(argv[0], "nfs") != 0 &&
6777                             strcmp(argv[0], "smb") != 0) {
6778                                 (void) fprintf(stderr, gettext("share type "
6779                                     "must be 'nfs' or 'smb'\n"));
6780                                 usage(B_FALSE);
6781                         }
6782                         protocol = argv[0];
6783                         argc--;
6784                         argv++;
6785                 }
6786
6787                 if (argc != 0) {
6788                         (void) fprintf(stderr, gettext("too many arguments\n"));
6789                         usage(B_FALSE);
6790                 }
6791
6792                 if (((pool = uu_avl_pool_create("unmount_pool",
6793                     sizeof (unshare_unmount_node_t),
6794                     offsetof(unshare_unmount_node_t, un_avlnode),
6795                     unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
6796                     ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
6797                         nomem();
6798
6799                 /* Reopen MNTTAB to prevent reading stale data from open file */
6800                 if (freopen(MNTTAB, "r", mnttab_file) == NULL)
6801                         return (ENOENT);
6802
6803                 while (getmntent(mnttab_file, &entry) == 0) {
6804
6805                         /* ignore non-ZFS entries */
6806                         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
6807                                 continue;
6808
6809                         /* ignore snapshots */
6810                         if (strchr(entry.mnt_special, '@') != NULL)
6811                                 continue;
6812
6813                         if ((zhp = zfs_open(g_zfs, entry.mnt_special,
6814                             ZFS_TYPE_FILESYSTEM)) == NULL) {
6815                                 ret = 1;
6816                                 continue;
6817                         }
6818
6819                         /*
6820                          * Ignore datasets that are excluded/restricted by
6821                          * parent pool name.
6822                          */
6823                         if (zpool_skip_pool(zfs_get_pool_name(zhp))) {
6824                                 zfs_close(zhp);
6825                                 continue;
6826                         }
6827
6828                         switch (op) {
6829                         case OP_SHARE:
6830                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6831                                     nfs_mnt_prop,
6832                                     sizeof (nfs_mnt_prop),
6833                                     NULL, NULL, 0, B_FALSE) == 0);
6834                                 if (strcmp(nfs_mnt_prop, "off") != 0)
6835                                         break;
6836                                 verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6837                                     nfs_mnt_prop,
6838                                     sizeof (nfs_mnt_prop),
6839                                     NULL, NULL, 0, B_FALSE) == 0);
6840                                 if (strcmp(nfs_mnt_prop, "off") == 0)
6841                                         continue;
6842                                 break;
6843                         case OP_MOUNT:
6844                                 /* Ignore legacy mounts */
6845                                 verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
6846                                     nfs_mnt_prop,
6847                                     sizeof (nfs_mnt_prop),
6848                                     NULL, NULL, 0, B_FALSE) == 0);
6849                                 if (strcmp(nfs_mnt_prop, "legacy") == 0)
6850                                         continue;
6851                                 /* Ignore canmount=noauto mounts */
6852                                 if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
6853                                     ZFS_CANMOUNT_NOAUTO)
6854                                         continue;
6855                         default:
6856                                 break;
6857                         }
6858
6859                         node = safe_malloc(sizeof (unshare_unmount_node_t));
6860                         node->un_zhp = zhp;
6861                         node->un_mountp = safe_strdup(entry.mnt_mountp);
6862
6863                         uu_avl_node_init(node, &node->un_avlnode, pool);
6864
6865                         if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
6866                                 uu_avl_insert(tree, node, idx);
6867                         } else {
6868                                 zfs_close(node->un_zhp);
6869                                 free(node->un_mountp);
6870                                 free(node);
6871                         }
6872                 }
6873
6874                 /*
6875                  * Walk the AVL tree in reverse, unmounting each filesystem and
6876                  * removing it from the AVL tree in the process.
6877                  */
6878                 if ((walk = uu_avl_walk_start(tree,
6879                     UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
6880                         nomem();
6881
6882                 while ((node = uu_avl_walk_next(walk)) != NULL) {
6883                         uu_avl_remove(tree, node);
6884
6885                         switch (op) {
6886                         case OP_SHARE:
6887                                 if (zfs_unshareall_bytype(node->un_zhp,
6888                                     node->un_mountp, protocol) != 0)
6889                                         ret = 1;
6890                                 break;
6891
6892                         case OP_MOUNT:
6893                                 if (zfs_unmount(node->un_zhp,
6894                                     node->un_zhp->zfs_name, flags) != 0)
6895                                         ret = 1;
6896                                 break;
6897                         }
6898
6899                         zfs_close(node->un_zhp);
6900                         free(node->un_mountp);
6901                         free(node);
6902                 }
6903
6904                 uu_avl_walk_end(walk);
6905                 uu_avl_destroy(tree);
6906                 uu_avl_pool_destroy(pool);
6907
6908         } else {
6909                 if (argc != 1) {
6910                         if (argc == 0)
6911                                 (void) fprintf(stderr,
6912                                     gettext("missing filesystem argument\n"));
6913                         else
6914                                 (void) fprintf(stderr,
6915                                     gettext("too many arguments\n"));
6916                         usage(B_FALSE);
6917                 }
6918
6919                 /*
6920                  * We have an argument, but it may be a full path or a ZFS
6921                  * filesystem.  Pass full paths off to unmount_path() (shared by
6922                  * manual_unmount), otherwise open the filesystem and pass to
6923                  * zfs_unmount().
6924                  */
6925                 if (argv[0][0] == '/')
6926                         return (unshare_unmount_path(op, argv[0],
6927                             flags, B_FALSE));
6928
6929                 if ((zhp = zfs_open(g_zfs, argv[0],
6930                     ZFS_TYPE_FILESYSTEM)) == NULL)
6931                         return (1);
6932
6933                 verify(zfs_prop_get(zhp, op == OP_SHARE ?
6934                     ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
6935                     nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
6936                     NULL, 0, B_FALSE) == 0);
6937
6938                 switch (op) {
6939                 case OP_SHARE:
6940                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
6941                             nfs_mnt_prop,
6942                             sizeof (nfs_mnt_prop),
6943                             NULL, NULL, 0, B_FALSE) == 0);
6944                         verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
6945                             sharesmb, sizeof (sharesmb), NULL, NULL,
6946                             0, B_FALSE) == 0);
6947
6948                         if (strcmp(nfs_mnt_prop, "off") == 0 &&
6949                             strcmp(sharesmb, "off") == 0) {
6950                                 (void) fprintf(stderr, gettext("cannot "
6951                                     "unshare '%s': legacy share\n"),
6952                                     zfs_get_name(zhp));
6953                                 (void) fprintf(stderr, gettext("use "
6954                                     "unshare(1M) to unshare this "
6955                                     "filesystem\n"));
6956                                 ret = 1;
6957                         } else if (!zfs_is_shared(zhp)) {
6958                                 (void) fprintf(stderr, gettext("cannot "
6959                                     "unshare '%s': not currently "
6960                                     "shared\n"), zfs_get_name(zhp));
6961                                 ret = 1;
6962                         } else if (zfs_unshareall(zhp) != 0) {
6963                                 ret = 1;
6964                         }
6965                         break;
6966
6967                 case OP_MOUNT:
6968                         if (strcmp(nfs_mnt_prop, "legacy") == 0) {
6969                                 (void) fprintf(stderr, gettext("cannot "
6970                                     "unmount '%s': legacy "
6971                                     "mountpoint\n"), zfs_get_name(zhp));
6972                                 (void) fprintf(stderr, gettext("use "
6973                                     "umount(1M) to unmount this "
6974                                     "filesystem\n"));
6975                                 ret = 1;
6976                         } else if (!zfs_is_mounted(zhp, NULL)) {
6977                                 (void) fprintf(stderr, gettext("cannot "
6978                                     "unmount '%s': not currently "
6979                                     "mounted\n"),
6980                                     zfs_get_name(zhp));
6981                                 ret = 1;
6982                         } else if (zfs_unmountall(zhp, flags) != 0) {
6983                                 ret = 1;
6984                         }
6985                         break;
6986                 }
6987
6988                 zfs_close(zhp);
6989         }
6990
6991         return (ret);
6992 }
6993
6994 /*
6995  * zfs unmount -a
6996  * zfs unmount filesystem
6997  *
6998  * Unmount all filesystems, or a specific ZFS filesystem.
6999  */
7000 static int
7001 zfs_do_unmount(int argc, char **argv)
7002 {
7003         return (unshare_unmount(OP_MOUNT, argc, argv));
7004 }
7005
7006 /*
7007  * zfs unshare -a
7008  * zfs unshare filesystem
7009  *
7010  * Unshare all filesystems, or a specific ZFS filesystem.
7011  */
7012 static int
7013 zfs_do_unshare(int argc, char **argv)
7014 {
7015         return (unshare_unmount(OP_SHARE, argc, argv));
7016 }
7017
7018 static int
7019 find_command_idx(char *command, int *idx)
7020 {
7021         int i;
7022
7023         for (i = 0; i < NCOMMAND; i++) {
7024                 if (command_table[i].name == NULL)
7025                         continue;
7026
7027                 if (strcmp(command, command_table[i].name) == 0) {
7028                         *idx = i;
7029                         return (0);
7030                 }
7031         }
7032         return (1);
7033 }
7034
7035 static int
7036 zfs_do_diff(int argc, char **argv)
7037 {
7038         zfs_handle_t *zhp;
7039         int flags = 0;
7040         char *tosnap = NULL;
7041         char *fromsnap = NULL;
7042         char *atp, *copy;
7043         int err = 0;
7044         int c;
7045
7046         while ((c = getopt(argc, argv, "FHt")) != -1) {
7047                 switch (c) {
7048                 case 'F':
7049                         flags |= ZFS_DIFF_CLASSIFY;
7050                         break;
7051                 case 'H':
7052                         flags |= ZFS_DIFF_PARSEABLE;
7053                         break;
7054                 case 't':
7055                         flags |= ZFS_DIFF_TIMESTAMP;
7056                         break;
7057                 default:
7058                         (void) fprintf(stderr,
7059                             gettext("invalid option '%c'\n"), optopt);
7060                         usage(B_FALSE);
7061                 }
7062         }
7063
7064         argc -= optind;
7065         argv += optind;
7066
7067         if (argc < 1) {
7068                 (void) fprintf(stderr,
7069                     gettext("must provide at least one snapshot name\n"));
7070                 usage(B_FALSE);
7071         }
7072
7073         if (argc > 2) {
7074                 (void) fprintf(stderr, gettext("too many arguments\n"));
7075                 usage(B_FALSE);
7076         }
7077
7078         fromsnap = argv[0];
7079         tosnap = (argc == 2) ? argv[1] : NULL;
7080
7081         copy = NULL;
7082         if (*fromsnap != '@')
7083                 copy = strdup(fromsnap);
7084         else if (tosnap)
7085                 copy = strdup(tosnap);
7086         if (copy == NULL)
7087                 usage(B_FALSE);
7088
7089         if ((atp = strchr(copy, '@')) != NULL)
7090                 *atp = '\0';
7091
7092         if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL) {
7093                 free(copy);
7094                 return (1);
7095         }
7096         free(copy);
7097
7098         /*
7099          * Ignore SIGPIPE so that the library can give us
7100          * information on any failure
7101          */
7102         (void) sigignore(SIGPIPE);
7103
7104         err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
7105
7106         zfs_close(zhp);
7107
7108         return (err != 0);
7109 }
7110
7111
7112 /*
7113  * zfs remap <filesystem | volume>
7114  *
7115  * Remap the indirect blocks in the given fileystem or volume.
7116  */
7117 static int
7118 zfs_do_remap(int argc, char **argv)
7119 {
7120         const char *fsname;
7121         int err = 0;
7122         int c;
7123
7124         /* check options */
7125         while ((c = getopt(argc, argv, "")) != -1) {
7126                 switch (c) {
7127                 case '?':
7128                         (void) fprintf(stderr,
7129                             gettext("invalid option '%c'\n"), optopt);
7130                         usage(B_FALSE);
7131                 }
7132         }
7133
7134         if (argc != 2) {
7135                 (void) fprintf(stderr, gettext("wrong number of arguments\n"));
7136                 usage(B_FALSE);
7137         }
7138
7139         fsname = argv[1];
7140         err = zfs_remap_indirects(g_zfs, fsname);
7141
7142         return (err);
7143 }
7144
7145 /*
7146  * zfs bookmark <fs@snap> <fs#bmark>
7147  *
7148  * Creates a bookmark with the given name from the given snapshot.
7149  */
7150 static int
7151 zfs_do_bookmark(int argc, char **argv)
7152 {
7153         char snapname[ZFS_MAX_DATASET_NAME_LEN];
7154         char bookname[ZFS_MAX_DATASET_NAME_LEN];
7155         zfs_handle_t *zhp;
7156         nvlist_t *nvl;
7157         int ret = 0;
7158         int c;
7159
7160         /* check options */
7161         while ((c = getopt(argc, argv, "")) != -1) {
7162                 switch (c) {
7163                 case '?':
7164                         (void) fprintf(stderr,
7165                             gettext("invalid option '%c'\n"), optopt);
7166                         goto usage;
7167                 }
7168         }
7169
7170         argc -= optind;
7171         argv += optind;
7172
7173         /* check number of arguments */
7174         if (argc < 1) {
7175                 (void) fprintf(stderr, gettext("missing snapshot argument\n"));
7176                 goto usage;
7177         }
7178         if (argc < 2) {
7179                 (void) fprintf(stderr, gettext("missing bookmark argument\n"));
7180                 goto usage;
7181         }
7182
7183         if (strchr(argv[0], '@') == NULL) {
7184                 (void) fprintf(stderr,
7185                     gettext("invalid snapshot name '%s': "
7186                     "must contain a '@'\n"), argv[0]);
7187                 goto usage;
7188         }
7189         if (strchr(argv[1], '#') == NULL) {
7190                 (void) fprintf(stderr,
7191                     gettext("invalid bookmark name '%s': "
7192                     "must contain a '#'\n"), argv[1]);
7193                 goto usage;
7194         }
7195
7196         if (argv[0][0] == '@') {
7197                 /*
7198                  * Snapshot name begins with @.
7199                  * Default to same fs as bookmark.
7200                  */
7201                 (void) strlcpy(snapname, argv[1], sizeof (snapname));
7202                 *strchr(snapname, '#') = '\0';
7203                 (void) strlcat(snapname, argv[0], sizeof (snapname));
7204         } else {
7205                 (void) strlcpy(snapname, argv[0], sizeof (snapname));
7206         }
7207         if (argv[1][0] == '#') {
7208                 /*
7209                  * Bookmark name begins with #.
7210                  * Default to same fs as snapshot.
7211                  */
7212                 (void) strlcpy(bookname, argv[0], sizeof (bookname));
7213                 *strchr(bookname, '@') = '\0';
7214                 (void) strlcat(bookname, argv[1], sizeof (bookname));
7215         } else {
7216                 (void) strlcpy(bookname, argv[1], sizeof (bookname));
7217         }
7218
7219         zhp = zfs_open(g_zfs, snapname, ZFS_TYPE_SNAPSHOT);
7220         if (zhp == NULL)
7221                 goto usage;
7222         zfs_close(zhp);
7223
7224
7225         nvl = fnvlist_alloc();
7226         fnvlist_add_string(nvl, bookname, snapname);
7227         ret = lzc_bookmark(nvl, NULL);
7228         fnvlist_free(nvl);
7229
7230         if (ret != 0) {
7231                 const char *err_msg;
7232                 char errbuf[1024];
7233
7234                 (void) snprintf(errbuf, sizeof (errbuf),
7235                     dgettext(TEXT_DOMAIN,
7236                     "cannot create bookmark '%s'"), bookname);
7237
7238                 switch (ret) {
7239                 case EXDEV:
7240                         err_msg = "bookmark is in a different pool";
7241                         break;
7242                 case EEXIST:
7243                         err_msg = "bookmark exists";
7244                         break;
7245                 case EINVAL:
7246                         err_msg = "invalid argument";
7247                         break;
7248                 case ENOTSUP:
7249                         err_msg = "bookmark feature not enabled";
7250                         break;
7251                 case ENOSPC:
7252                         err_msg = "out of space";
7253                         break;
7254                 case ENOENT:
7255                         err_msg = "dataset does not exist";
7256                         break;
7257                 default:
7258                         err_msg = "unknown error";
7259                         break;
7260                 }
7261                 (void) fprintf(stderr, "%s: %s\n", errbuf,
7262                     dgettext(TEXT_DOMAIN, err_msg));
7263         }
7264
7265         return (ret != 0);
7266
7267 usage:
7268         usage(B_FALSE);
7269         return (-1);
7270 }
7271
7272 static int
7273 zfs_do_channel_program(int argc, char **argv)
7274 {
7275         int ret, fd, c;
7276         char *progbuf, *filename, *poolname;
7277         size_t progsize, progread;
7278         nvlist_t *outnvl;
7279         uint64_t instrlimit = ZCP_DEFAULT_INSTRLIMIT;
7280         uint64_t memlimit = ZCP_DEFAULT_MEMLIMIT;
7281         boolean_t sync_flag = B_TRUE, json_output = B_FALSE;
7282         zpool_handle_t *zhp;
7283
7284         /* check options */
7285         while ((c = getopt(argc, argv, "nt:m:j")) != -1) {
7286                 switch (c) {
7287                 case 't':
7288                 case 'm': {
7289                         uint64_t arg;
7290                         char *endp;
7291
7292                         errno = 0;
7293                         arg = strtoull(optarg, &endp, 0);
7294                         if (errno != 0 || *endp != '\0') {
7295                                 (void) fprintf(stderr, gettext(
7296                                     "invalid argument "
7297                                     "'%s': expected integer\n"), optarg);
7298                                 goto usage;
7299                         }
7300
7301                         if (c == 't') {
7302                                 if (arg > ZCP_MAX_INSTRLIMIT || arg == 0) {
7303                                         (void) fprintf(stderr, gettext(
7304                                             "Invalid instruction limit: "
7305                                             "%s\n"), optarg);
7306                                         return (1);
7307                                 } else {
7308                                         instrlimit = arg;
7309                                 }
7310                         } else {
7311                                 ASSERT3U(c, ==, 'm');
7312                                 if (arg > ZCP_MAX_MEMLIMIT || arg == 0) {
7313                                         (void) fprintf(stderr, gettext(
7314                                             "Invalid memory limit: "
7315                                             "%s\n"), optarg);
7316                                         return (1);
7317                                 } else {
7318                                         memlimit = arg;
7319                                 }
7320                         }
7321                         break;
7322                 }
7323                 case 'n': {
7324                         sync_flag = B_FALSE;
7325                         break;
7326                 }
7327                 case 'j': {
7328                         json_output = B_TRUE;
7329                         break;
7330                 }
7331                 case '?':
7332                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
7333                             optopt);
7334                         goto usage;
7335                 }
7336         }
7337
7338         argc -= optind;
7339         argv += optind;
7340
7341         if (argc < 2) {
7342                 (void) fprintf(stderr,
7343                     gettext("invalid number of arguments\n"));
7344                 goto usage;
7345         }
7346
7347         poolname = argv[0];
7348         filename = argv[1];
7349         if (strcmp(filename, "-") == 0) {
7350                 fd = 0;
7351                 filename = "standard input";
7352         } else if ((fd = open(filename, O_RDONLY)) < 0) {
7353                 (void) fprintf(stderr, gettext("cannot open '%s': %s\n"),
7354                     filename, strerror(errno));
7355                 return (1);
7356         }
7357
7358         if ((zhp = zpool_open(g_zfs, poolname)) == NULL) {
7359                 (void) fprintf(stderr, gettext("cannot open pool '%s'"),
7360                     poolname);
7361                 if (fd != 0)
7362                         (void) close(fd);
7363                 return (1);
7364         }
7365         zpool_close(zhp);
7366
7367         /*
7368          * Read in the channel program, expanding the program buffer as
7369          * necessary.
7370          */
7371         progread = 0;
7372         progsize = 1024;
7373         progbuf = safe_malloc(progsize);
7374         do {
7375                 ret = read(fd, progbuf + progread, progsize - progread);
7376                 progread += ret;
7377                 if (progread == progsize && ret > 0) {
7378                         progsize *= 2;
7379                         progbuf = safe_realloc(progbuf, progsize);
7380                 }
7381         } while (ret > 0);
7382
7383         if (fd != 0)
7384                 (void) close(fd);
7385         if (ret < 0) {
7386                 free(progbuf);
7387                 (void) fprintf(stderr,
7388                     gettext("cannot read '%s': %s\n"),
7389                     filename, strerror(errno));
7390                 return (1);
7391         }
7392         progbuf[progread] = '\0';
7393
7394         /*
7395          * Any remaining arguments are passed as arguments to the lua script as
7396          * a string array:
7397          * {
7398          *      "argv" -> [ "arg 1", ... "arg n" ],
7399          * }
7400          */
7401         nvlist_t *argnvl = fnvlist_alloc();
7402         fnvlist_add_string_array(argnvl, ZCP_ARG_CLIARGV, argv + 2, argc - 2);
7403
7404         if (sync_flag) {
7405                 ret = lzc_channel_program(poolname, progbuf,
7406                     instrlimit, memlimit, argnvl, &outnvl);
7407         } else {
7408                 ret = lzc_channel_program_nosync(poolname, progbuf,
7409                     instrlimit, memlimit, argnvl, &outnvl);
7410         }
7411
7412         if (ret != 0) {
7413                 /*
7414                  * On error, report the error message handed back by lua if one
7415                  * exists.  Otherwise, generate an appropriate error message,
7416                  * falling back on strerror() for an unexpected return code.
7417                  */
7418                 char *errstring = NULL;
7419                 uint64_t instructions = 0;
7420                 if (nvlist_exists(outnvl, ZCP_RET_ERROR)) {
7421                         (void) nvlist_lookup_string(outnvl,
7422                             ZCP_RET_ERROR, &errstring);
7423                         if (errstring == NULL)
7424                                 errstring = strerror(ret);
7425                         if (ret == ETIME) {
7426                                 (void) nvlist_lookup_uint64(outnvl,
7427                                     ZCP_ARG_INSTRLIMIT, &instructions);
7428                         }
7429                 } else {
7430                         switch (ret) {
7431                         case EINVAL:
7432                                 errstring =
7433                                     "Invalid instruction or memory limit.";
7434                                 break;
7435                         case ENOMEM:
7436                                 errstring = "Return value too large.";
7437                                 break;
7438                         case ENOSPC:
7439                                 errstring = "Memory limit exhausted.";
7440                                 break;
7441                         case ETIME:
7442                                 errstring = "Timed out.";
7443                                 break;
7444                         case EPERM:
7445                                 errstring = "Permission denied. Channel "
7446                                     "programs must be run as root.";
7447                                 break;
7448                         default:
7449                                 errstring = strerror(ret);
7450                         }
7451                 }
7452                 (void) fprintf(stderr,
7453                     gettext("Channel program execution failed:\n%s\n"),
7454                     errstring);
7455                 if (ret == ETIME && instructions != 0)
7456                         (void) fprintf(stderr,
7457                             gettext("%llu Lua instructions\n"),
7458                             (u_longlong_t)instructions);
7459         } else {
7460                 if (json_output) {
7461                         (void) nvlist_print_json(stdout, outnvl);
7462                 } else if (nvlist_empty(outnvl)) {
7463                         (void) fprintf(stdout, gettext("Channel program fully "
7464                             "executed and did not produce output.\n"));
7465                 } else {
7466                         (void) fprintf(stdout, gettext("Channel program fully "
7467                             "executed and produced output:\n"));
7468                         dump_nvlist(outnvl, 4);
7469                 }
7470         }
7471
7472         free(progbuf);
7473         fnvlist_free(outnvl);
7474         fnvlist_free(argnvl);
7475         return (ret != 0);
7476
7477 usage:
7478         usage(B_FALSE);
7479         return (-1);
7480 }
7481
7482
7483 typedef struct loadkey_cbdata {
7484         boolean_t cb_loadkey;
7485         boolean_t cb_recursive;
7486         boolean_t cb_noop;
7487         char *cb_keylocation;
7488         uint64_t cb_numfailed;
7489         uint64_t cb_numattempted;
7490 } loadkey_cbdata_t;
7491
7492 static int
7493 load_key_callback(zfs_handle_t *zhp, void *data)
7494 {
7495         int ret;
7496         boolean_t is_encroot;
7497         loadkey_cbdata_t *cb = data;
7498         uint64_t keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
7499
7500         /*
7501          * If we are working recursively, we want to skip loading / unloading
7502          * keys for non-encryption roots and datasets whose keys are already
7503          * in the desired end-state.
7504          */
7505         if (cb->cb_recursive) {
7506                 ret = zfs_crypto_get_encryption_root(zhp, &is_encroot, NULL);
7507                 if (ret != 0)
7508                         return (ret);
7509                 if (!is_encroot)
7510                         return (0);
7511
7512                 if ((cb->cb_loadkey && keystatus == ZFS_KEYSTATUS_AVAILABLE) ||
7513                     (!cb->cb_loadkey && keystatus == ZFS_KEYSTATUS_UNAVAILABLE))
7514                         return (0);
7515         }
7516
7517         cb->cb_numattempted++;
7518
7519         if (cb->cb_loadkey)
7520                 ret = zfs_crypto_load_key(zhp, cb->cb_noop, cb->cb_keylocation);
7521         else
7522                 ret = zfs_crypto_unload_key(zhp);
7523
7524         if (ret != 0) {
7525                 cb->cb_numfailed++;
7526                 return (ret);
7527         }
7528
7529         return (0);
7530 }
7531
7532 static int
7533 load_unload_keys(int argc, char **argv, boolean_t loadkey)
7534 {
7535         int c, ret = 0, flags = 0;
7536         boolean_t do_all = B_FALSE;
7537         loadkey_cbdata_t cb = { 0 };
7538
7539         cb.cb_loadkey = loadkey;
7540
7541         while ((c = getopt(argc, argv, "anrL:")) != -1) {
7542                 /* noop and alternate keylocations only apply to zfs load-key */
7543                 if (loadkey) {
7544                         switch (c) {
7545                         case 'n':
7546                                 cb.cb_noop = B_TRUE;
7547                                 continue;
7548                         case 'L':
7549                                 cb.cb_keylocation = optarg;
7550                                 continue;
7551                         default:
7552                                 break;
7553                         }
7554                 }
7555
7556                 switch (c) {
7557                 case 'a':
7558                         do_all = B_TRUE;
7559                         cb.cb_recursive = B_TRUE;
7560                         break;
7561                 case 'r':
7562                         flags |= ZFS_ITER_RECURSE;
7563                         cb.cb_recursive = B_TRUE;
7564                         break;
7565                 default:
7566                         (void) fprintf(stderr,
7567                             gettext("invalid option '%c'\n"), optopt);
7568                         usage(B_FALSE);
7569                 }
7570         }
7571
7572         argc -= optind;
7573         argv += optind;
7574
7575         if (!do_all && argc == 0) {
7576                 (void) fprintf(stderr,
7577                     gettext("Missing dataset argument or -a option\n"));
7578                 usage(B_FALSE);
7579         }
7580
7581         if (do_all && argc != 0) {
7582                 (void) fprintf(stderr,
7583                     gettext("Cannot specify dataset with -a option\n"));
7584                 usage(B_FALSE);
7585         }
7586
7587         if (cb.cb_recursive && cb.cb_keylocation != NULL &&
7588             strcmp(cb.cb_keylocation, "prompt") != 0) {
7589                 (void) fprintf(stderr, gettext("alternate keylocation may only "
7590                     "be 'prompt' with -r or -a\n"));
7591                 usage(B_FALSE);
7592         }
7593
7594         ret = zfs_for_each(argc, argv, flags,
7595             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, NULL, NULL, 0,
7596             load_key_callback, &cb);
7597
7598         if (cb.cb_noop || (cb.cb_recursive && cb.cb_numattempted != 0)) {
7599                 (void) printf(gettext("%llu / %llu key(s) successfully %s\n"),
7600                     (u_longlong_t)(cb.cb_numattempted - cb.cb_numfailed),
7601                     (u_longlong_t)cb.cb_numattempted,
7602                     loadkey ? (cb.cb_noop ? "verified" : "loaded") :
7603                     "unloaded");
7604         }
7605
7606         if (cb.cb_numfailed != 0)
7607                 ret = -1;
7608
7609         return (ret);
7610 }
7611
7612 static int
7613 zfs_do_load_key(int argc, char **argv)
7614 {
7615         return (load_unload_keys(argc, argv, B_TRUE));
7616 }
7617
7618
7619 static int
7620 zfs_do_unload_key(int argc, char **argv)
7621 {
7622         return (load_unload_keys(argc, argv, B_FALSE));
7623 }
7624
7625 static int
7626 zfs_do_change_key(int argc, char **argv)
7627 {
7628         int c, ret;
7629         uint64_t keystatus;
7630         boolean_t loadkey = B_FALSE, inheritkey = B_FALSE;
7631         zfs_handle_t *zhp = NULL;
7632         nvlist_t *props = fnvlist_alloc();
7633
7634         while ((c = getopt(argc, argv, "lio:")) != -1) {
7635                 switch (c) {
7636                 case 'l':
7637                         loadkey = B_TRUE;
7638                         break;
7639                 case 'i':
7640                         inheritkey = B_TRUE;
7641                         break;
7642                 case 'o':
7643                         if (!parseprop(props, optarg)) {
7644                                 nvlist_free(props);
7645                                 return (1);
7646                         }
7647                         break;
7648                 default:
7649                         (void) fprintf(stderr,
7650                             gettext("invalid option '%c'\n"), optopt);
7651                         usage(B_FALSE);
7652                 }
7653         }
7654
7655         if (inheritkey && !nvlist_empty(props)) {
7656                 (void) fprintf(stderr,
7657                     gettext("Properties not allowed for inheriting\n"));
7658                 usage(B_FALSE);
7659         }
7660
7661         argc -= optind;
7662         argv += optind;
7663
7664         if (argc < 1) {
7665                 (void) fprintf(stderr, gettext("Missing dataset argument\n"));
7666                 usage(B_FALSE);
7667         }
7668
7669         if (argc > 1) {
7670                 (void) fprintf(stderr, gettext("Too many arguments\n"));
7671                 usage(B_FALSE);
7672         }
7673
7674         zhp = zfs_open(g_zfs, argv[argc - 1],
7675             ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
7676         if (zhp == NULL)
7677                 usage(B_FALSE);
7678
7679         if (loadkey) {
7680                 keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
7681                 if (keystatus != ZFS_KEYSTATUS_AVAILABLE) {
7682                         ret = zfs_crypto_load_key(zhp, B_FALSE, NULL);
7683                         if (ret != 0) {
7684                                 nvlist_free(props);
7685                                 zfs_close(zhp);
7686                                 return (-1);
7687                         }
7688                 }
7689
7690                 /* refresh the properties so the new keystatus is visible */
7691                 zfs_refresh_properties(zhp);
7692         }
7693
7694         ret = zfs_crypto_rewrap(zhp, props, inheritkey);
7695         if (ret != 0) {
7696                 nvlist_free(props);
7697                 zfs_close(zhp);
7698                 return (-1);
7699         }
7700
7701         nvlist_free(props);
7702         zfs_close(zhp);
7703         return (0);
7704 }
7705
7706 /*
7707  * 1) zfs project [-d|-r] <file|directory ...>
7708  *    List project ID and inherit flag of file(s) or directories.
7709  *    -d: List the directory itself, not its children.
7710  *    -r: List subdirectories recursively.
7711  *
7712  * 2) zfs project -C [-k] [-r] <file|directory ...>
7713  *    Clear project inherit flag and/or ID on the file(s) or directories.
7714  *    -k: Keep the project ID unchanged. If not specified, the project ID
7715  *        will be reset as zero.
7716  *    -r: Clear on subdirectories recursively.
7717  *
7718  * 3) zfs project -c [-0] [-d|-r] [-p id] <file|directory ...>
7719  *    Check project ID and inherit flag on the file(s) or directories,
7720  *    report the outliers.
7721  *    -0: Print file name followed by a NUL instead of newline.
7722  *    -d: Check the directory itself, not its children.
7723  *    -p: Specify the referenced ID for comparing with the target file(s)
7724  *        or directories' project IDs. If not specified, the target (top)
7725  *        directory's project ID will be used as the referenced one.
7726  *    -r: Check subdirectories recursively.
7727  *
7728  * 4) zfs project [-p id] [-r] [-s] <file|directory ...>
7729  *    Set project ID and/or inherit flag on the file(s) or directories.
7730  *    -p: Set the project ID as the given id.
7731  *    -r: Set on subdirectorie recursively. If not specify "-p" option,
7732  *        it will use top-level directory's project ID as the given id,
7733  *        then set both project ID and inherit flag on all descendants
7734  *        of the top-level directory.
7735  *    -s: Set project inherit flag.
7736  */
7737 static int
7738 zfs_do_project(int argc, char **argv)
7739 {
7740         zfs_project_control_t zpc = {
7741                 .zpc_expected_projid = ZFS_INVALID_PROJID,
7742                 .zpc_op = ZFS_PROJECT_OP_DEFAULT,
7743                 .zpc_dironly = B_FALSE,
7744                 .zpc_keep_projid = B_FALSE,
7745                 .zpc_newline = B_TRUE,
7746                 .zpc_recursive = B_FALSE,
7747                 .zpc_set_flag = B_FALSE,
7748         };
7749         int ret = 0, c;
7750
7751         if (argc < 2)
7752                 usage(B_FALSE);
7753
7754         while ((c = getopt(argc, argv, "0Ccdkp:rs")) != -1) {
7755                 switch (c) {
7756                 case '0':
7757                         zpc.zpc_newline = B_FALSE;
7758                         break;
7759                 case 'C':
7760                         if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
7761                                 (void) fprintf(stderr, gettext("cannot "
7762                                     "specify '-C' '-c' '-s' together\n"));
7763                                 usage(B_FALSE);
7764                         }
7765
7766                         zpc.zpc_op = ZFS_PROJECT_OP_CLEAR;
7767                         break;
7768                 case 'c':
7769                         if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
7770                                 (void) fprintf(stderr, gettext("cannot "
7771                                     "specify '-C' '-c' '-s' together\n"));
7772                                 usage(B_FALSE);
7773                         }
7774
7775                         zpc.zpc_op = ZFS_PROJECT_OP_CHECK;
7776                         break;
7777                 case 'd':
7778                         zpc.zpc_dironly = B_TRUE;
7779                         /* overwrite "-r" option */
7780                         zpc.zpc_recursive = B_FALSE;
7781                         break;
7782                 case 'k':
7783                         zpc.zpc_keep_projid = B_TRUE;
7784                         break;
7785                 case 'p': {
7786                         char *endptr;
7787
7788                         errno = 0;
7789                         zpc.zpc_expected_projid = strtoull(optarg, &endptr, 0);
7790                         if (errno != 0 || *endptr != '\0') {
7791                                 (void) fprintf(stderr,
7792                                     gettext("project ID must be less than "
7793                                     "%u\n"), UINT32_MAX);
7794                                 usage(B_FALSE);
7795                         }
7796                         if (zpc.zpc_expected_projid >= UINT32_MAX) {
7797                                 (void) fprintf(stderr,
7798                                     gettext("invalid project ID\n"));
7799                                 usage(B_FALSE);
7800                         }
7801                         break;
7802                 }
7803                 case 'r':
7804                         zpc.zpc_recursive = B_TRUE;
7805                         /* overwrite "-d" option */
7806                         zpc.zpc_dironly = B_FALSE;
7807                         break;
7808                 case 's':
7809                         if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
7810                                 (void) fprintf(stderr, gettext("cannot "
7811                                     "specify '-C' '-c' '-s' together\n"));
7812                                 usage(B_FALSE);
7813                         }
7814
7815                         zpc.zpc_set_flag = B_TRUE;
7816                         zpc.zpc_op = ZFS_PROJECT_OP_SET;
7817                         break;
7818                 default:
7819                         (void) fprintf(stderr, gettext("invalid option '%c'\n"),
7820                             optopt);
7821                         usage(B_FALSE);
7822                 }
7823         }
7824
7825         if (zpc.zpc_op == ZFS_PROJECT_OP_DEFAULT) {
7826                 if (zpc.zpc_expected_projid != ZFS_INVALID_PROJID)
7827                         zpc.zpc_op = ZFS_PROJECT_OP_SET;
7828                 else
7829                         zpc.zpc_op = ZFS_PROJECT_OP_LIST;
7830         }
7831
7832         switch (zpc.zpc_op) {
7833         case ZFS_PROJECT_OP_LIST:
7834                 if (zpc.zpc_keep_projid) {
7835                         (void) fprintf(stderr,
7836                             gettext("'-k' is only valid together with '-C'\n"));
7837                         usage(B_FALSE);
7838                 }
7839                 if (!zpc.zpc_newline) {
7840                         (void) fprintf(stderr,
7841                             gettext("'-0' is only valid together with '-c'\n"));
7842                         usage(B_FALSE);
7843                 }
7844                 break;
7845         case ZFS_PROJECT_OP_CHECK:
7846                 if (zpc.zpc_keep_projid) {
7847                         (void) fprintf(stderr,
7848                             gettext("'-k' is only valid together with '-C'\n"));
7849                         usage(B_FALSE);
7850                 }
7851                 break;
7852         case ZFS_PROJECT_OP_CLEAR:
7853                 if (zpc.zpc_dironly) {
7854                         (void) fprintf(stderr,
7855                             gettext("'-d' is useless together with '-C'\n"));
7856                         usage(B_FALSE);
7857                 }
7858                 if (!zpc.zpc_newline) {
7859                         (void) fprintf(stderr,
7860                             gettext("'-0' is only valid together with '-c'\n"));
7861                         usage(B_FALSE);
7862                 }
7863                 if (zpc.zpc_expected_projid != ZFS_INVALID_PROJID) {
7864                         (void) fprintf(stderr,
7865                             gettext("'-p' is useless together with '-C'\n"));
7866                         usage(B_FALSE);
7867                 }
7868                 break;
7869         case ZFS_PROJECT_OP_SET:
7870                 if (zpc.zpc_dironly) {
7871                         (void) fprintf(stderr,
7872                             gettext("'-d' is useless for set project ID and/or "
7873                             "inherit flag\n"));
7874                         usage(B_FALSE);
7875                 }
7876                 if (zpc.zpc_keep_projid) {
7877                         (void) fprintf(stderr,
7878                             gettext("'-k' is only valid together with '-C'\n"));
7879                         usage(B_FALSE);
7880                 }
7881                 if (!zpc.zpc_newline) {
7882                         (void) fprintf(stderr,
7883                             gettext("'-0' is only valid together with '-c'\n"));
7884                         usage(B_FALSE);
7885                 }
7886                 break;
7887         default:
7888                 ASSERT(0);
7889                 break;
7890         }
7891
7892         argv += optind;
7893         argc -= optind;
7894         if (argc == 0) {
7895                 (void) fprintf(stderr,
7896                     gettext("missing file or directory target(s)\n"));
7897                 usage(B_FALSE);
7898         }
7899
7900         for (int i = 0; i < argc; i++) {
7901                 int err;
7902
7903                 err = zfs_project_handle(argv[i], &zpc);
7904                 if (err && !ret)
7905                         ret = err;
7906         }
7907
7908         return (ret);
7909 }
7910
7911 int
7912 main(int argc, char **argv)
7913 {
7914         int ret = 0;
7915         int i = 0;
7916         char *cmdname;
7917
7918         (void) setlocale(LC_ALL, "");
7919         (void) textdomain(TEXT_DOMAIN);
7920
7921         opterr = 0;
7922
7923         /*
7924          * Make sure the user has specified some command.
7925          */
7926         if (argc < 2) {
7927                 (void) fprintf(stderr, gettext("missing command\n"));
7928                 usage(B_FALSE);
7929         }
7930
7931         cmdname = argv[1];
7932
7933         /*
7934          * The 'umount' command is an alias for 'unmount'
7935          */
7936         if (strcmp(cmdname, "umount") == 0)
7937                 cmdname = "unmount";
7938
7939         /*
7940          * The 'recv' command is an alias for 'receive'
7941          */
7942         if (strcmp(cmdname, "recv") == 0)
7943                 cmdname = "receive";
7944
7945         /*
7946          * The 'snap' command is an alias for 'snapshot'
7947          */
7948         if (strcmp(cmdname, "snap") == 0)
7949                 cmdname = "snapshot";
7950
7951         /*
7952          * Special case '-?'
7953          */
7954         if ((strcmp(cmdname, "-?") == 0) ||
7955             (strcmp(cmdname, "--help") == 0))
7956                 usage(B_TRUE);
7957
7958         if ((g_zfs = libzfs_init()) == NULL) {
7959                 (void) fprintf(stderr, "%s", libzfs_error_init(errno));
7960                 return (1);
7961         }
7962
7963         mnttab_file = g_zfs->libzfs_mnttab;
7964
7965         zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
7966
7967         libzfs_print_on_error(g_zfs, B_TRUE);
7968
7969         /*
7970          * Run the appropriate command.
7971          */
7972         libzfs_mnttab_cache(g_zfs, B_TRUE);
7973         if (find_command_idx(cmdname, &i) == 0) {
7974                 current_command = &command_table[i];
7975                 ret = command_table[i].func(argc - 1, argv + 1);
7976         } else if (strchr(cmdname, '=') != NULL) {
7977                 verify(find_command_idx("set", &i) == 0);
7978                 current_command = &command_table[i];
7979                 ret = command_table[i].func(argc, argv);
7980         } else {
7981                 (void) fprintf(stderr, gettext("unrecognized "
7982                     "command '%s'\n"), cmdname);
7983                 usage(B_FALSE);
7984                 ret = 1;
7985         }
7986
7987         if (ret == 0 && log_history)
7988                 (void) zpool_log_history(g_zfs, history_str);
7989
7990         libzfs_fini(g_zfs);
7991
7992         /*
7993          * The 'ZFS_ABORT' environment variable causes us to dump core on exit
7994          * for the purposes of running ::findleaks.
7995          */
7996         if (getenv("ZFS_ABORT") != NULL) {
7997                 (void) printf("dumping core by request\n");
7998                 abort();
7999         }
8000
8001         return (ret);
8002 }