external/cddl/osnet/dist/lib/libzfs/common/libzfs_util.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  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 /*
  27  * Internal utility routines for the ZFS library.
  28  */
  29
  30 #include <errno.h>
  31 #include <fcntl.h>
  32 #include <libintl.h>
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <strings.h>
  37 #include <unistd.h>
  38 #include <ctype.h>
  39 #include <math.h>
  40 #include <sys/mnttab.h>
  41 #include <sys/mntent.h>
  42 #include <sys/types.h>
  43
  44 #include <libzfs.h>
  45
  46 #include "libzfs_impl.h"
  47 #include "zfs_prop.h"
  48
  49 int
  50 libzfs_errno(libzfs_handle_t *hdl)
  51 {
  52         return (hdl->libzfs_error);
  53 }
  54
  55 const char *
  56 libzfs_error_action(libzfs_handle_t *hdl)
  57 {
  58         return (hdl->libzfs_action);
  59 }
  60
  61 const char *
  62 libzfs_error_description(libzfs_handle_t *hdl)
  63 {
  64         if (hdl->libzfs_desc[0] != '\0')
  65                 return (hdl->libzfs_desc);
  66
  67         switch (hdl->libzfs_error) {
  68         case EZFS_NOMEM:
  69                 return (dgettext(TEXT_DOMAIN, "out of memory"));
  70         case EZFS_BADPROP:
  71                 return (dgettext(TEXT_DOMAIN, "invalid property value"));
  72         case EZFS_PROPREADONLY:
  73                 return (dgettext(TEXT_DOMAIN, "read only property"));
  74         case EZFS_PROPTYPE:
  75                 return (dgettext(TEXT_DOMAIN, "property doesn't apply to "
  76                     "datasets of this type"));
  77         case EZFS_PROPNONINHERIT:
  78                 return (dgettext(TEXT_DOMAIN, "property cannot be inherited"));
  79         case EZFS_PROPSPACE:
  80                 return (dgettext(TEXT_DOMAIN, "invalid quota or reservation"));
  81         case EZFS_BADTYPE:
  82                 return (dgettext(TEXT_DOMAIN, "operation not applicable to "
  83                     "datasets of this type"));
  84         case EZFS_BUSY:
  85                 return (dgettext(TEXT_DOMAIN, "pool or dataset is busy"));
  86         case EZFS_EXISTS:
  87                 return (dgettext(TEXT_DOMAIN, "pool or dataset exists"));
  88         case EZFS_NOENT:
  89                 return (dgettext(TEXT_DOMAIN, "no such pool or dataset"));
  90         case EZFS_BADSTREAM:
  91                 return (dgettext(TEXT_DOMAIN, "invalid backup stream"));
  92         case EZFS_DSREADONLY:
  93                 return (dgettext(TEXT_DOMAIN, "dataset is read only"));
  94         case EZFS_VOLTOOBIG:
  95                 return (dgettext(TEXT_DOMAIN, "volume size exceeds limit for "
  96                     "this system"));
  97         case EZFS_VOLHASDATA:
  98                 return (dgettext(TEXT_DOMAIN, "volume has data"));
  99         case EZFS_INVALIDNAME:
 100                 return (dgettext(TEXT_DOMAIN, "invalid name"));
 101         case EZFS_BADRESTORE:
 102                 return (dgettext(TEXT_DOMAIN, "unable to restore to "
 103                     "destination"));
 104         case EZFS_BADBACKUP:
 105                 return (dgettext(TEXT_DOMAIN, "backup failed"));
 106         case EZFS_BADTARGET:
 107                 return (dgettext(TEXT_DOMAIN, "invalid target vdev"));
 108         case EZFS_NODEVICE:
 109                 return (dgettext(TEXT_DOMAIN, "no such device in pool"));
 110         case EZFS_BADDEV:
 111                 return (dgettext(TEXT_DOMAIN, "invalid device"));
 112         case EZFS_NOREPLICAS:
 113                 return (dgettext(TEXT_DOMAIN, "no valid replicas"));
 114         case EZFS_RESILVERING:
 115                 return (dgettext(TEXT_DOMAIN, "currently resilvering"));
 116         case EZFS_BADVERSION:
 117                 return (dgettext(TEXT_DOMAIN, "unsupported version"));
 118         case EZFS_POOLUNAVAIL:
 119                 return (dgettext(TEXT_DOMAIN, "pool is unavailable"));
 120         case EZFS_DEVOVERFLOW:
 121                 return (dgettext(TEXT_DOMAIN, "too many devices in one vdev"));
 122         case EZFS_BADPATH:
 123                 return (dgettext(TEXT_DOMAIN, "must be an absolute path"));
 124         case EZFS_CROSSTARGET:
 125                 return (dgettext(TEXT_DOMAIN, "operation crosses datasets or "
 126                     "pools"));
 127         case EZFS_ZONED:
 128                 return (dgettext(TEXT_DOMAIN, "dataset in use by local zone"));
 129         case EZFS_MOUNTFAILED:
 130                 return (dgettext(TEXT_DOMAIN, "mount failed"));
 131         case EZFS_UMOUNTFAILED:
 132                 return (dgettext(TEXT_DOMAIN, "umount failed"));
 133         case EZFS_UNSHARENFSFAILED:
 134                 return (dgettext(TEXT_DOMAIN, "unshare(1M) failed"));
 135         case EZFS_SHARENFSFAILED:
 136                 return (dgettext(TEXT_DOMAIN, "share(1M) failed"));
 137         case EZFS_UNSHARESMBFAILED:
 138                 return (dgettext(TEXT_DOMAIN, "smb remove share failed"));
 139         case EZFS_SHARESMBFAILED:
 140                 return (dgettext(TEXT_DOMAIN, "smb add share failed"));
 141         case EZFS_ISCSISVCUNAVAIL:
 142                 return (dgettext(TEXT_DOMAIN,
 143                     "iscsitgt service need to be enabled by "
 144                     "a privileged user"));
 145         case EZFS_DEVLINKS:
 146                 return (dgettext(TEXT_DOMAIN, "failed to create /dev links"));
 147         case EZFS_PERM:
 148                 return (dgettext(TEXT_DOMAIN, "permission denied"));
 149         case EZFS_NOSPC:
 150                 return (dgettext(TEXT_DOMAIN, "out of space"));
 151         case EZFS_IO:
 152                 return (dgettext(TEXT_DOMAIN, "I/O error"));
 153         case EZFS_INTR:
 154                 return (dgettext(TEXT_DOMAIN, "signal received"));
 155         case EZFS_ISSPARE:
 156                 return (dgettext(TEXT_DOMAIN, "device is reserved as a hot "
 157                     "spare"));
 158         case EZFS_INVALCONFIG:
 159                 return (dgettext(TEXT_DOMAIN, "invalid vdev configuration"));
 160         case EZFS_RECURSIVE:
 161                 return (dgettext(TEXT_DOMAIN, "recursive dataset dependency"));
 162         case EZFS_NOHISTORY:
 163                 return (dgettext(TEXT_DOMAIN, "no history available"));
 164         case EZFS_UNSHAREISCSIFAILED:
 165                 return (dgettext(TEXT_DOMAIN,
 166                     "iscsitgtd failed request to unshare"));
 167         case EZFS_SHAREISCSIFAILED:
 168                 return (dgettext(TEXT_DOMAIN,
 169                     "iscsitgtd failed request to share"));
 170         case EZFS_POOLPROPS:
 171                 return (dgettext(TEXT_DOMAIN, "failed to retrieve "
 172                     "pool properties"));
 173         case EZFS_POOL_NOTSUP:
 174                 return (dgettext(TEXT_DOMAIN, "operation not supported "
 175                     "on this type of pool"));
 176         case EZFS_POOL_INVALARG:
 177                 return (dgettext(TEXT_DOMAIN, "invalid argument for "
 178                     "this pool operation"));
 179         case EZFS_NAMETOOLONG:
 180                 return (dgettext(TEXT_DOMAIN, "dataset name is too long"));
 181         case EZFS_OPENFAILED:
 182                 return (dgettext(TEXT_DOMAIN, "open failed"));
 183         case EZFS_NOCAP:
 184                 return (dgettext(TEXT_DOMAIN,
 185                     "disk capacity information could not be retrieved"));
 186         case EZFS_LABELFAILED:
 187                 return (dgettext(TEXT_DOMAIN, "write of label failed"));
 188         case EZFS_BADWHO:
 189                 return (dgettext(TEXT_DOMAIN, "invalid user/group"));
 190         case EZFS_BADPERM:
 191                 return (dgettext(TEXT_DOMAIN, "invalid permission"));
 192         case EZFS_BADPERMSET:
 193                 return (dgettext(TEXT_DOMAIN, "invalid permission set name"));
 194         case EZFS_NODELEGATION:
 195                 return (dgettext(TEXT_DOMAIN, "delegated administration is "
 196                     "disabled on pool"));
 197         case EZFS_PERMRDONLY:
 198                 return (dgettext(TEXT_DOMAIN, "snapshot permissions cannot be"
 199                     " modified"));
 200         case EZFS_BADCACHE:
 201                 return (dgettext(TEXT_DOMAIN, "invalid or missing cache file"));
 202         case EZFS_ISL2CACHE:
 203                 return (dgettext(TEXT_DOMAIN, "device is in use as a cache"));
 204         case EZFS_VDEVNOTSUP:
 205                 return (dgettext(TEXT_DOMAIN, "vdev specification is not "
 206                     "supported"));
 207         case EZFS_NOTSUP:
 208                 return (dgettext(TEXT_DOMAIN, "operation not supported "
 209                     "on this dataset"));
 210         case EZFS_ACTIVE_SPARE:
 211                 return (dgettext(TEXT_DOMAIN, "pool has active shared spare "
 212                     "device"));
 213         case EZFS_UNKNOWN:
 214                 return (dgettext(TEXT_DOMAIN, "unknown error"));
 215         default:
 216                 assert(hdl->libzfs_error == 0);
 217                 return (dgettext(TEXT_DOMAIN, "no error"));
 218         }
 219 }
 220
 221 /*PRINTFLIKE2*/
 222 void
 223 zfs_error_aux(libzfs_handle_t *hdl, const char *fmt, ...)
 224 {
 225         va_list ap;
 226
 227         va_start(ap, fmt);
 228
 229         (void) vsnprintf(hdl->libzfs_desc, sizeof (hdl->libzfs_desc),
 230             fmt, ap);
 231         hdl->libzfs_desc_active = 1;
 232
 233         va_end(ap);
 234 }
 235
 236 static void
 237 zfs_verror(libzfs_handle_t *hdl, int error, const char *fmt, va_list ap)
 238 {
 239         (void) vsnprintf(hdl->libzfs_action, sizeof (hdl->libzfs_action),
 240             fmt, ap);
 241         hdl->libzfs_error = error;
 242
 243         if (hdl->libzfs_desc_active)
 244                 hdl->libzfs_desc_active = 0;
 245         else
 246                 hdl->libzfs_desc[0] = '\0';
 247
 248         if (hdl->libzfs_printerr) {
 249                 if (error == EZFS_UNKNOWN) {
 250                         (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "internal "
 251                             "error: %s\n"), libzfs_error_description(hdl));
 252                         abort();
 253                 }
 254
 255                 (void) fprintf(stderr, "%s: %s\n", hdl->libzfs_action,
 256                     libzfs_error_description(hdl));
 257                 if (error == EZFS_NOMEM)
 258                         exit(1);
 259         }
 260 }
 261
 262 int
 263 zfs_error(libzfs_handle_t *hdl, int error, const char *msg)
 264 {
 265         return (zfs_error_fmt(hdl, error, "%s", msg));
 266 }
 267
 268 /*PRINTFLIKE3*/
 269 int
 270 zfs_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
 271 {
 272         va_list ap;
 273
 274         va_start(ap, fmt);
 275
 276         zfs_verror(hdl, error, fmt, ap);
 277
 278         va_end(ap);
 279
 280         return (-1);
 281 }
 282
 283 static int
 284 zfs_common_error(libzfs_handle_t *hdl, int error, const char *fmt,
 285     va_list ap)
 286 {
 287         switch (error) {
 288         case EPERM:
 289         case EACCES:
 290                 zfs_verror(hdl, EZFS_PERM, fmt, ap);
 291                 return (-1);
 292
 293         case ECANCELED:
 294                 zfs_verror(hdl, EZFS_NODELEGATION, fmt, ap);
 295                 return (-1);
 296
 297         case EIO:
 298                 zfs_verror(hdl, EZFS_IO, fmt, ap);
 299                 return (-1);
 300
 301         case EINTR:
 302                 zfs_verror(hdl, EZFS_INTR, fmt, ap);
 303                 return (-1);
 304         }
 305
 306         return (0);
 307 }
 308
 309 int
 310 zfs_standard_error(libzfs_handle_t *hdl, int error, const char *msg)
 311 {
 312         return (zfs_standard_error_fmt(hdl, error, "%s", msg));
 313 }
 314
 315 /*PRINTFLIKE3*/
 316 int
 317 zfs_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
 318 {
 319         va_list ap;
 320
 321         va_start(ap, fmt);
 322
 323         if (zfs_common_error(hdl, error, fmt, ap) != 0) {
 324                 va_end(ap);
 325                 return (-1);
 326         }
 327
 328         switch (error) {
 329         case ENXIO:
 330         case ENODEV:
 331                 zfs_verror(hdl, EZFS_IO, fmt, ap);
 332                 break;
 333
 334         case ENOENT:
 335                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 336                     "dataset does not exist"));
 337                 zfs_verror(hdl, EZFS_NOENT, fmt, ap);
 338                 break;
 339
 340         case ENOSPC:
 341         case EDQUOT:
 342                 zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
 343                 return (-1);
 344
 345         case EEXIST:
 346                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 347                     "dataset already exists"));
 348                 zfs_verror(hdl, EZFS_EXISTS, fmt, ap);
 349                 break;
 350
 351         case EBUSY:
 352                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 353                     "dataset is busy"));
 354                 zfs_verror(hdl, EZFS_BUSY, fmt, ap);
 355                 break;
 356         case EROFS:
 357                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 358                     "snapshot permissions cannot be modified"));
 359                 zfs_verror(hdl, EZFS_PERMRDONLY, fmt, ap);
 360                 break;
 361         case ENAMETOOLONG:
 362                 zfs_verror(hdl, EZFS_NAMETOOLONG, fmt, ap);
 363                 break;
 364         case ENOTSUP:
 365                 zfs_verror(hdl, EZFS_BADVERSION, fmt, ap);
 366                 break;
 367         default:
 368                 zfs_error_aux(hdl, strerror(errno));
 369                 zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
 370                 break;
 371         }
 372
 373         va_end(ap);
 374         return (-1);
 375 }
 376
 377 int
 378 zpool_standard_error(libzfs_handle_t *hdl, int error, const char *msg)
 379 {
 380         return (zpool_standard_error_fmt(hdl, error, "%s", msg));
 381 }
 382
 383 /*PRINTFLIKE3*/
 384 int
 385 zpool_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
 386 {
 387         va_list ap;
 388
 389         va_start(ap, fmt);
 390
 391         if (zfs_common_error(hdl, error, fmt, ap) != 0) {
 392                 va_end(ap);
 393                 return (-1);
 394         }
 395
 396         switch (error) {
 397         case ENODEV:
 398                 zfs_verror(hdl, EZFS_NODEVICE, fmt, ap);
 399                 break;
 400
 401         case ENOENT:
 402                 zfs_error_aux(hdl,
 403                     dgettext(TEXT_DOMAIN, "no such pool or dataset"));
 404                 zfs_verror(hdl, EZFS_NOENT, fmt, ap);
 405                 break;
 406
 407         case EEXIST:
 408                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 409                     "pool already exists"));
 410                 zfs_verror(hdl, EZFS_EXISTS, fmt, ap);
 411                 break;
 412
 413         case EBUSY:
 414                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool is busy"));
 415                 zfs_verror(hdl, EZFS_BUSY, fmt, ap);
 416                 break;
 417
 418         case ENXIO:
 419                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 420                     "one or more devices is currently unavailable"));
 421                 zfs_verror(hdl, EZFS_BADDEV, fmt, ap);
 422                 break;
 423
 424         case ENAMETOOLONG:
 425                 zfs_verror(hdl, EZFS_DEVOVERFLOW, fmt, ap);
 426                 break;
 427
 428         case ENOTSUP:
 429                 zfs_verror(hdl, EZFS_POOL_NOTSUP, fmt, ap);
 430                 break;
 431
 432         case EINVAL:
 433                 zfs_verror(hdl, EZFS_POOL_INVALARG, fmt, ap);
 434                 break;
 435
 436         case ENOSPC:
 437         case EDQUOT:
 438                 zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
 439                 return (-1);
 440
 441         default:
 442                 zfs_error_aux(hdl, strerror(error));
 443                 zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
 444         }
 445
 446         va_end(ap);
 447         return (-1);
 448 }
 449
 450 /*
 451  * Display an out of memory error message and abort the current program.
 452  */
 453 int
 454 no_memory(libzfs_handle_t *hdl)
 455 {
 456         return (zfs_error(hdl, EZFS_NOMEM, "internal error"));
 457 }
 458
 459 /*
 460  * A safe form of malloc() which will die if the allocation fails.
 461  */
 462 void *
 463 zfs_alloc(libzfs_handle_t *hdl, size_t size)
 464 {
 465         void *data;
 466
 467         if ((data = calloc(1, size)) == NULL)
 468                 (void) no_memory(hdl);
 469
 470         return (data);
 471 }
 472
 473 /*
 474  * A safe form of realloc(), which also zeroes newly allocated space.
 475  */
 476 void *
 477 zfs_realloc(libzfs_handle_t *hdl, void *ptr, size_t oldsize, size_t newsize)
 478 {
 479         void *ret;
 480
 481         if ((ret = realloc(ptr, newsize)) == NULL) {
 482                 (void) no_memory(hdl);
 483                 free(ptr);
 484                 return (NULL);
 485         }
 486
 487         bzero((char *)ret + oldsize, (newsize - oldsize));
 488         return (ret);
 489 }
 490
 491 /*
 492  * A safe form of strdup() which will die if the allocation fails.
 493  */
 494 char *
 495 zfs_strdup(libzfs_handle_t *hdl, const char *str)
 496 {
 497         char *ret;
 498
 499         if ((ret = strdup(str)) == NULL)
 500                 (void) no_memory(hdl);
 501
 502         return (ret);
 503 }
 504
 505 /*
 506  * Convert a number to an appropriately human-readable output.
 507  */
 508 void
 509 zfs_nicenum(uint64_t num, char *buf, size_t buflen)
 510 {
 511         uint64_t n = num;
 512         int index = 0;
 513         char u;
 514
 515         while (n >= 1024) {
 516                 n /= 1024;
 517                 index++;
 518         }
 519
 520         u = " KMGTPE"[index];
 521
 522         if (index == 0) {
 523                 (void) snprintf(buf, buflen, "%llu", n);
 524         } else if ((num & ((1ULL << 10 * index) - 1)) == 0) {
 525                 /*
 526                  * If this is an even multiple of the base, always display
 527                  * without any decimal precision.
 528                  */
 529                 (void) snprintf(buf, buflen, "%llu%c", n, u);
 530         } else {
 531                 /*
 532                  * We want to choose a precision that reflects the best choice
 533                  * for fitting in 5 characters.  This can get rather tricky when
 534                  * we have numbers that are very close to an order of magnitude.
 535                  * For example, when displaying 10239 (which is really 9.999K),
 536                  * we want only a single place of precision for 10.0K.  We could
 537                  * develop some complex heuristics for this, but it's much
 538                  * easier just to try each combination in turn.
 539                  */
 540                 int i;
 541                 for (i = 2; i >= 0; i--) {
 542                         if (snprintf(buf, buflen, "%.*f%c", i,
 543                             (double)num / (1ULL << 10 * index), u) <= 5)
 544                                 break;
 545                 }
 546         }
 547 }
 548
 549 void
 550 libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr)
 551 {
 552         hdl->libzfs_printerr = printerr;
 553 }
 554
 555 libzfs_handle_t *
 556 libzfs_init(void)
 557 {
 558         libzfs_handle_t *hdl;
 559
 560         if ((hdl = calloc(sizeof (libzfs_handle_t), 1)) == NULL) {
 561                 return (NULL);
 562         }
 563
 564         if ((hdl->libzfs_fd = open(ZFS_DEV, O_RDWR)) < 0) {
 565                 free(hdl);
 566                 return (NULL);
 567         }
 568
 569         if ((hdl->libzfs_mnttab = fopen(MNTTAB, "r")) == NULL) {
 570                 (void) close(hdl->libzfs_fd);
 571                 free(hdl);
 572                 return (NULL);
 573         }
 574
 575         hdl->libzfs_sharetab = fopen("/etc/dfs/sharetab", "r");
 576
 577         zfs_prop_init();
 578         zpool_prop_init();
 579
 580         return (hdl);
 581 }
 582
 583 void
 584 libzfs_fini(libzfs_handle_t *hdl)
 585 {
 586         (void) close(hdl->libzfs_fd);
 587         if (hdl->libzfs_mnttab)
 588                 (void) fclose(hdl->libzfs_mnttab);
 589         if (hdl->libzfs_sharetab)
 590                 (void) fclose(hdl->libzfs_sharetab);
 591         zfs_uninit_libshare(hdl);
 592         if (hdl->libzfs_log_str)
 593                 (void) free(hdl->libzfs_log_str);
 594         zpool_free_handles(hdl);
 595         namespace_clear(hdl);
 596         free(hdl);
 597 }
 598
 599 libzfs_handle_t *
 600 zpool_get_handle(zpool_handle_t *zhp)
 601 {
 602         return (zhp->zpool_hdl);
 603 }
 604
 605 libzfs_handle_t *
 606 zfs_get_handle(zfs_handle_t *zhp)
 607 {
 608         return (zhp->zfs_hdl);
 609 }
 610
 611 zpool_handle_t *
 612 zfs_get_pool_handle(const zfs_handle_t *zhp)
 613 {
 614         return (zhp->zpool_hdl);
 615 }
 616
 617 /*
 618  * Given a name, determine whether or not it's a valid path
 619  * (starts with '/' or "./").  If so, walk the mnttab trying
 620  * to match the device number.  If not, treat the path as an
 621  * fs/vol/snap name.
 622  */
 623 zfs_handle_t *
 624 zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype)
 625 {
 626         struct statvfs statbuf;
 627         int ret;
 628
 629         if (path[0] != '/' && strncmp(path, "./", strlen("./")) != 0) {
 630                 /*
 631                  * It's not a valid path, assume it's a name of type 'argtype'.
 632                  */
 633                 return (zfs_open(hdl, path, argtype));
 634         }
 635
 636         if (getstatfs(&statbuf, path) != 0) {
 637                 (void) fprintf(stderr, "%s: %s\n", path, strerror(errno));
 638                 return (NULL);
 639         }
 640
 641         if (strcmp(statbuf.f_fstypename, MNTTYPE_ZFS) != 0) {
 642                 (void) fprintf(stderr, gettext("'%s': not a ZFS filesystem\n"),
 643                     path);
 644                 return (NULL);
 645         }
 646
 647         return (zfs_open(hdl, statbuf.f_mntfromname, ZFS_TYPE_FILESYSTEM));
 648 }
 649
 650 /*
 651  * Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from
 652  * an ioctl().
 653  */
 654 int
 655 zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len)
 656 {
 657         if (len == 0)
 658                 len = 2048;
 659         zc->zc_nvlist_dst_size = len;
 660         if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
 661             zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == NULL)
 662                 return (-1);
 663
 664         return (0);
 665 }
 666
 667 /*
 668  * Called when an ioctl() which returns an nvlist fails with ENOMEM.  This will
 669  * expand the nvlist to the size specified in 'zc_nvlist_dst_size', which was
 670  * filled in by the kernel to indicate the actual required size.
 671  */
 672 int
 673 zcmd_expand_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc)
 674 {
 675         free((void *)(uintptr_t)zc->zc_nvlist_dst);
 676         if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
 677             zfs_alloc(hdl, zc->zc_nvlist_dst_size))
 678             == NULL)
 679                 return (-1);
 680
 681         return (0);
 682 }
 683
 684 /*
 685  * Called to free the src and dst nvlists stored in the command structure.
 686  */
 687 void
 688 zcmd_free_nvlists(zfs_cmd_t *zc)
 689 {
 690         free((void *)(uintptr_t)zc->zc_nvlist_conf);
 691         free((void *)(uintptr_t)zc->zc_nvlist_src);
 692         free((void *)(uintptr_t)zc->zc_nvlist_dst);
 693 }
 694
 695 static int
 696 zcmd_write_nvlist_com(libzfs_handle_t *hdl, uint64_t *outnv, uint64_t *outlen,
 697     nvlist_t *nvl)
 698 {
 699         char *packed;
 700         size_t len;
 701
 702         verify(nvlist_size(nvl, &len, NV_ENCODE_NATIVE) == 0);
 703
 704         if ((packed = zfs_alloc(hdl, len)) == NULL)
 705                 return (-1);
 706
 707         verify(nvlist_pack(nvl, &packed, &len, NV_ENCODE_NATIVE, 0) == 0);
 708
 709         *outnv = (uint64_t)(uintptr_t)packed;
 710         *outlen = len;
 711
 712         return (0);
 713 }
 714
 715 int
 716 zcmd_write_conf_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl)
 717 {
 718         return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_conf,
 719             &zc->zc_nvlist_conf_size, nvl));
 720 }
 721
 722 int
 723 zcmd_write_src_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl)
 724 {
 725         return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_src,
 726             &zc->zc_nvlist_src_size, nvl));
 727 }
 728
 729 /*
 730  * Unpacks an nvlist from the ZFS ioctl command structure.
 731  */
 732 int
 733 zcmd_read_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t **nvlp)
 734 {
 735         if (nvlist_unpack((void *)(uintptr_t)zc->zc_nvlist_dst,
 736             zc->zc_nvlist_dst_size, nvlp, 0) != 0)
 737                 return (no_memory(hdl));
 738
 739         return (0);
 740 }
 741
 742 int
 743 zfs_ioctl(libzfs_handle_t *hdl, int request, zfs_cmd_t *zc)
 744 {
 745         int error;
 746
 747         zc->zc_history = (uint64_t)(uintptr_t)hdl->libzfs_log_str;
 748         error = ioctl(hdl->libzfs_fd, request, zc);
 749         if (hdl->libzfs_log_str) {
 750                 free(hdl->libzfs_log_str);
 751                 hdl->libzfs_log_str = NULL;
 752         }
 753         zc->zc_history = 0;
 754
 755         return (error);
 756 }
 757
 758 /*
 759  * ================================================================
 760  * API shared by zfs and zpool property management
 761  * ================================================================
 762  */
 763
 764 static void
 765 zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
 766 {
 767         zprop_list_t *pl = cbp->cb_proplist;
 768         int i;
 769         char *title;
 770         size_t len;
 771
 772         cbp->cb_first = B_FALSE;
 773         if (cbp->cb_scripted)
 774                 return;
 775
 776         /*
 777          * Start with the length of the column headers.
 778          */
 779         cbp->cb_colwidths[GET_COL_NAME] = strlen(dgettext(TEXT_DOMAIN, "NAME"));
 780         cbp->cb_colwidths[GET_COL_PROPERTY] = strlen(dgettext(TEXT_DOMAIN,
 781             "PROPERTY"));
 782         cbp->cb_colwidths[GET_COL_VALUE] = strlen(dgettext(TEXT_DOMAIN,
 783             "VALUE"));
 784         cbp->cb_colwidths[GET_COL_SOURCE] = strlen(dgettext(TEXT_DOMAIN,
 785             "SOURCE"));
 786
 787         /*
 788          * Go through and calculate the widths for each column.  For the
 789          * 'source' column, we kludge it up by taking the worst-case scenario of
 790          * inheriting from the longest name.  This is acceptable because in the
 791          * majority of cases 'SOURCE' is the last column displayed, and we don't
 792          * use the width anyway.  Note that the 'VALUE' column can be oversized,
 793          * if the name of the property is much longer the any values we find.
 794          */
 795         for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) {
 796                 /*
 797                  * 'PROPERTY' column
 798                  */
 799                 if (pl->pl_prop != ZPROP_INVAL) {
 800                         const char *propname = (type == ZFS_TYPE_POOL) ?
 801                             zpool_prop_to_name(pl->pl_prop) :
 802                             zfs_prop_to_name(pl->pl_prop);
 803
 804                         len = strlen(propname);
 805                         if (len > cbp->cb_colwidths[GET_COL_PROPERTY])
 806                                 cbp->cb_colwidths[GET_COL_PROPERTY] = len;
 807                 } else {
 808                         len = strlen(pl->pl_user_prop);
 809                         if (len > cbp->cb_colwidths[GET_COL_PROPERTY])
 810                                 cbp->cb_colwidths[GET_COL_PROPERTY] = len;
 811                 }
 812
 813                 /*
 814                  * 'VALUE' column
 815                  */
 816                 if ((pl->pl_prop != ZFS_PROP_NAME || !pl->pl_all) &&
 817                     pl->pl_width > cbp->cb_colwidths[GET_COL_VALUE])
 818                         cbp->cb_colwidths[GET_COL_VALUE] = pl->pl_width;
 819
 820                 /*
 821                  * 'NAME' and 'SOURCE' columns
 822                  */
 823                 if (pl->pl_prop == (type == ZFS_TYPE_POOL ? ZPOOL_PROP_NAME :
 824                     ZFS_PROP_NAME) &&
 825                     pl->pl_width > cbp->cb_colwidths[GET_COL_NAME]) {
 826                         cbp->cb_colwidths[GET_COL_NAME] = pl->pl_width;
 827                         cbp->cb_colwidths[GET_COL_SOURCE] = pl->pl_width +
 828                             strlen(dgettext(TEXT_DOMAIN, "inherited from"));
 829                 }
 830         }
 831
 832         /*
 833          * Now go through and print the headers.
 834          */
 835         for (i = 0; i < 4; i++) {
 836                 switch (cbp->cb_columns[i]) {
 837                 case GET_COL_NAME:
 838                         title = dgettext(TEXT_DOMAIN, "NAME");
 839                         break;
 840                 case GET_COL_PROPERTY:
 841                         title = dgettext(TEXT_DOMAIN, "PROPERTY");
 842                         break;
 843                 case GET_COL_VALUE:
 844                         title = dgettext(TEXT_DOMAIN, "VALUE");
 845                         break;
 846                 case GET_COL_SOURCE:
 847                         title = dgettext(TEXT_DOMAIN, "SOURCE");
 848                         break;
 849                 default:
 850                         title = NULL;
 851                 }
 852
 853                 if (title != NULL) {
 854                         if (i == 3 || cbp->cb_columns[i + 1] == 0)
 855                                 (void) printf("%s", title);
 856                         else
 857                                 (void) printf("%-*s  ",
 858                                     cbp->cb_colwidths[cbp->cb_columns[i]],
 859                                     title);
 860                 }
 861         }
 862         (void) printf("\n");
 863 }
 864
 865 /*
 866  * Display a single line of output, according to the settings in the callback
 867  * structure.
 868  */
 869 void
 870 zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp,
 871     const char *propname, const char *value, zprop_source_t sourcetype,
 872     const char *source)
 873 {
 874         int i;
 875         const char *str;
 876         char buf[128];
 877
 878         /*
 879          * Ignore those source types that the user has chosen to ignore.
 880          */
 881         if ((sourcetype & cbp->cb_sources) == 0)
 882                 return;
 883
 884         if (cbp->cb_first)
 885                 zprop_print_headers(cbp, cbp->cb_type);
 886
 887         for (i = 0; i < 4; i++) {
 888                 switch (cbp->cb_columns[i]) {
 889                 case GET_COL_NAME:
 890                         str = name;
 891                         break;
 892
 893                 case GET_COL_PROPERTY:
 894                         str = propname;
 895                         break;
 896
 897                 case GET_COL_VALUE:
 898                         str = value;
 899                         break;
 900
 901                 case GET_COL_SOURCE:
 902                         switch (sourcetype) {
 903                         case ZPROP_SRC_NONE:
 904                                 str = "-";
 905                                 break;
 906
 907                         case ZPROP_SRC_DEFAULT:
 908                                 str = "default";
 909                                 break;
 910
 911                         case ZPROP_SRC_LOCAL:
 912                                 str = "local";
 913                                 break;
 914
 915                         case ZPROP_SRC_TEMPORARY:
 916                                 str = "temporary";
 917                                 break;
 918
 919                         case ZPROP_SRC_INHERITED:
 920                                 (void) snprintf(buf, sizeof (buf),
 921                                     "inherited from %s", source);
 922                                 str = buf;
 923                                 break;
 924                         }
 925                         break;
 926
 927                 default:
 928                         continue;
 929                 }
 930
 931                 if (cbp->cb_columns[i + 1] == 0)
 932                         (void) printf("%s", str);
 933                 else if (cbp->cb_scripted)
 934                         (void) printf("%s\t", str);
 935                 else
 936                         (void) printf("%-*s  ",
 937                             cbp->cb_colwidths[cbp->cb_columns[i]],
 938                             str);
 939
 940         }
 941
 942         (void) printf("\n");
 943 }
 944
 945 /*
 946  * Given a numeric suffix, convert the value into a number of bits that the
 947  * resulting value must be shifted.
 948  */
 949 static int
 950 str2shift(libzfs_handle_t *hdl, const char *buf)
 951 {
 952         const char *ends = "BKMGTPEZ";
 953         int i;
 954
 955         if (buf[0] == '\0')
 956                 return (0);
 957         for (i = 0; i < strlen(ends); i++) {
 958                 if (toupper(buf[0]) == ends[i])
 959                         break;
 960         }
 961         if (i == strlen(ends)) {
 962                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 963                     "invalid numeric suffix '%s'"), buf);
 964                 return (-1);
 965         }
 966
 967         /*
 968          * We want to allow trailing 'b' characters for 'GB' or 'Mb'.  But don't
 969          * allow 'BB' - that's just weird.
 970          */
 971         if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0' &&
 972             toupper(buf[0]) != 'B'))
 973                 return (10*i);
 974
 975         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 976             "invalid numeric suffix '%s'"), buf);
 977         return (-1);
 978 }
 979
 980 /*
 981  * Convert a string of the form '100G' into a real number.  Used when setting
 982  * properties or creating a volume.  'buf' is used to place an extended error
 983  * message for the caller to use.
 984  */
 985 int
 986 zfs_nicestrtonum(libzfs_handle_t *hdl, const char *value, uint64_t *num)
 987 {
 988         char *end;
 989         int shift;
 990
 991         *num = 0;
 992
 993         /* Check to see if this looks like a number.  */
 994         if ((value[0] < '0' || value[0] > '9') && value[0] != '.') {
 995                 if (hdl)
 996                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 997                             "bad numeric value '%s'"), value);
 998                 return (-1);
 999         }
1000
1001         /* Rely on stroll() to process the numeric portion.  */
1002         errno = 0;
1003         *num = strtoll(value, &end, 10);
1004
1005         /*
1006          * Check for ERANGE, which indicates that the value is too large to fit
1007          * in a 64-bit value.
1008          */
1009         if (errno == ERANGE) {
1010                 if (hdl)
1011                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1012                             "numeric value is too large"));
1013                 return (-1);
1014         }
1015
1016         /*
1017          * If we have a decimal value, then do the computation with floating
1018          * point arithmetic.  Otherwise, use standard arithmetic.
1019          */
1020         if (*end == '.') {
1021                 double fval = strtod(value, &end);
1022
1023                 if ((shift = str2shift(hdl, end)) == -1)
1024                         return (-1);
1025
1026                 fval *= pow(2, shift);
1027
1028                 if (fval > UINT64_MAX) {
1029                         if (hdl)
1030                                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1031                                     "numeric value is too large"));
1032                         return (-1);
1033                 }
1034
1035                 *num = (uint64_t)fval;
1036         } else {
1037                 if ((shift = str2shift(hdl, end)) == -1)
1038                         return (-1);
1039
1040                 /* Check for overflow */
1041                 if (shift >= 64 || (*num << shift) >> shift != *num) {
1042                         if (hdl)
1043                                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1044                                     "numeric value is too large"));
1045                         return (-1);
1046                 }
1047
1048                 *num <<= shift;
1049         }
1050
1051         return (0);
1052 }
1053
1054 /*
1055  * Given a propname=value nvpair to set, parse any numeric properties
1056  * (index, boolean, etc) if they are specified as strings and add the
1057  * resulting nvpair to the returned nvlist.
1058  *
1059  * At the DSL layer, all properties are either 64-bit numbers or strings.
1060  * We want the user to be able to ignore this fact and specify properties
1061  * as native values (numbers, for example) or as strings (to simplify
1062  * command line utilities).  This also handles converting index types
1063  * (compression, checksum, etc) from strings to their on-disk index.
1064  */
1065 int
1066 zprop_parse_value(libzfs_handle_t *hdl, nvpair_t *elem, int prop,
1067     zfs_type_t type, nvlist_t *ret, char **svalp, uint64_t *ivalp,
1068     const char *errbuf)
1069 {
1070         data_type_t datatype = nvpair_type(elem);
1071         zprop_type_t proptype;
1072         const char *propname;
1073         char *value;
1074         boolean_t isnone = B_FALSE;
1075
1076         if (type == ZFS_TYPE_POOL) {
1077                 proptype = zpool_prop_get_type(prop);
1078                 propname = zpool_prop_to_name(prop);
1079         } else {
1080                 proptype = zfs_prop_get_type(prop);
1081                 propname = zfs_prop_to_name(prop);
1082         }
1083
1084         /*
1085          * Convert any properties to the internal DSL value types.
1086          */
1087         *svalp = NULL;
1088         *ivalp = 0;
1089
1090         switch (proptype) {
1091         case PROP_TYPE_STRING:
1092                 if (datatype != DATA_TYPE_STRING) {
1093                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1094                             "'%s' must be a string"), nvpair_name(elem));
1095                         goto error;
1096                 }
1097                 (void) nvpair_value_string(elem, svalp);
1098                 if (strlen(*svalp) >= ZFS_MAXPROPLEN) {
1099                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1100                             "'%s' is too long"), nvpair_name(elem));
1101                         goto error;
1102                 }
1103                 break;
1104
1105         case PROP_TYPE_NUMBER:
1106                 if (datatype == DATA_TYPE_STRING) {
1107                         (void) nvpair_value_string(elem, &value);
1108                         if (strcmp(value, "none") == 0) {
1109                                 isnone = B_TRUE;
1110                         } else if (zfs_nicestrtonum(hdl, value, ivalp)
1111                             != 0) {
1112                                 goto error;
1113                         }
1114                 } else if (datatype == DATA_TYPE_UINT64) {
1115                         (void) nvpair_value_uint64(elem, ivalp);
1116                 } else {
1117                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1118                             "'%s' must be a number"), nvpair_name(elem));
1119                         goto error;
1120                 }
1121
1122                 /*
1123                  * Quota special: force 'none' and don't allow 0.
1124                  */
1125                 if ((type & ZFS_TYPE_DATASET) && *ivalp == 0 && !isnone &&
1126                     (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_REFQUOTA)) {
1127                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1128                             "use 'none' to disable quota/refquota"));
1129                         goto error;
1130                 }
1131                 break;
1132
1133         case PROP_TYPE_INDEX:
1134                 if (datatype != DATA_TYPE_STRING) {
1135                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1136                             "'%s' must be a string"), nvpair_name(elem));
1137                         goto error;
1138                 }
1139
1140                 (void) nvpair_value_string(elem, &value);
1141
1142                 if (zprop_string_to_index(prop, value, ivalp, type) != 0) {
1143                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1144                             "'%s' must be one of '%s'"), propname,
1145                             zprop_values(prop, type));
1146                         goto error;
1147                 }
1148                 break;
1149
1150         default:
1151                 abort();
1152         }
1153
1154         /*
1155          * Add the result to our return set of properties.
1156          */
1157         if (*svalp != NULL) {
1158                 if (nvlist_add_string(ret, propname, *svalp) != 0) {
1159                         (void) no_memory(hdl);
1160                         return (-1);
1161                 }
1162         } else {
1163                 if (nvlist_add_uint64(ret, propname, *ivalp) != 0) {
1164                         (void) no_memory(hdl);
1165                         return (-1);
1166                 }
1167         }
1168
1169         return (0);
1170 error:
1171         (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1172         return (-1);
1173 }
1174
1175 static int
1176 addlist(libzfs_handle_t *hdl, char *propname, zprop_list_t **listp,
1177     zfs_type_t type)
1178 {
1179         int prop;
1180         zprop_list_t *entry;
1181
1182         prop = zprop_name_to_prop(propname, type);
1183
1184         if (prop != ZPROP_INVAL && !zprop_valid_for_type(prop, type))
1185                 prop = ZPROP_INVAL;
1186
1187         /*
1188          * When no property table entry can be found, return failure if
1189          * this is a pool property or if this isn't a user-defined
1190          * dataset property,
1191          */
1192         if (prop == ZPROP_INVAL && (type == ZFS_TYPE_POOL ||
1193             !zfs_prop_user(propname))) {
1194                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1195                     "invalid property '%s'"), propname);
1196                 return (zfs_error(hdl, EZFS_BADPROP,
1197                     dgettext(TEXT_DOMAIN, "bad property list")));
1198         }
1199
1200         if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL)
1201                 return (-1);
1202
1203         entry->pl_prop = prop;
1204         if (prop == ZPROP_INVAL) {
1205                 if ((entry->pl_user_prop = zfs_strdup(hdl, propname)) == NULL) {
1206                         free(entry);
1207                         return (-1);
1208                 }
1209                 entry->pl_width = strlen(propname);
1210         } else {
1211                 entry->pl_width = zprop_width(prop, &entry->pl_fixed,
1212                     type);
1213         }
1214
1215         *listp = entry;
1216
1217         return (0);
1218 }
1219
1220 /*
1221  * Given a comma-separated list of properties, construct a property list
1222  * containing both user-defined and native properties.  This function will
1223  * return a NULL list if 'all' is specified, which can later be expanded
1224  * by zprop_expand_list().
1225  */
1226 int
1227 zprop_get_list(libzfs_handle_t *hdl, char *props, zprop_list_t **listp,
1228     zfs_type_t type)
1229 {
1230         *listp = NULL;
1231
1232         /*
1233          * If 'all' is specified, return a NULL list.
1234          */
1235         if (strcmp(props, "all") == 0)
1236                 return (0);
1237
1238         /*
1239          * If no props were specified, return an error.
1240          */
1241         if (props[0] == '\0') {
1242                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1243                     "no properties specified"));
1244                 return (zfs_error(hdl, EZFS_BADPROP, dgettext(TEXT_DOMAIN,
1245                     "bad property list")));
1246         }
1247
1248         /*
1249          * It would be nice to use getsubopt() here, but the inclusion of column
1250          * aliases makes this more effort than it's worth.
1251          */
1252         while (*props != '\0') {
1253                 size_t len;
1254                 char *p;
1255                 char c;
1256
1257                 if ((p = strchr(props, ',')) == NULL) {
1258                         len = strlen(props);
1259                         p = props + len;
1260                 } else {
1261                         len = p - props;
1262                 }
1263
1264                 /*
1265                  * Check for empty options.
1266                  */
1267                 if (len == 0) {
1268                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1269                             "empty property name"));
1270                         return (zfs_error(hdl, EZFS_BADPROP,
1271                             dgettext(TEXT_DOMAIN, "bad property list")));
1272                 }
1273
1274                 /*
1275                  * Check all regular property names.
1276                  */
1277                 c = props[len];
1278                 props[len] = '\0';
1279
1280                 if (strcmp(props, "space") == 0) {
1281                         static char *spaceprops[] = {
1282                                 "name", "avail", "used", "usedbysnapshots",
1283                                 "usedbydataset", "usedbyrefreservation",
1284                                 "usedbychildren", NULL
1285                         };
1286                         int i;
1287
1288                         for (i = 0; spaceprops[i]; i++) {
1289                                 if (addlist(hdl, spaceprops[i], listp, type))
1290                                         return (-1);
1291                                 listp = &(*listp)->pl_next;
1292                         }
1293                 } else {
1294                         if (addlist(hdl, props, listp, type))
1295                                 return (-1);
1296                         listp = &(*listp)->pl_next;
1297                 }
1298
1299                 props = p;
1300                 if (c == ',')
1301                         props++;
1302         }
1303
1304         return (0);
1305 }
1306
1307 void
1308 zprop_free_list(zprop_list_t *pl)
1309 {
1310         zprop_list_t *next;
1311
1312         while (pl != NULL) {
1313                 next = pl->pl_next;
1314                 free(pl->pl_user_prop);
1315                 free(pl);
1316                 pl = next;
1317         }
1318 }
1319
1320 typedef struct expand_data {
1321         zprop_list_t    **last;
1322         libzfs_handle_t *hdl;
1323         zfs_type_t type;
1324 } expand_data_t;
1325
1326 int
1327 zprop_expand_list_cb(int prop, void *cb)
1328 {
1329         zprop_list_t *entry;
1330         expand_data_t *edp = cb;
1331
1332         if ((entry = zfs_alloc(edp->hdl, sizeof (zprop_list_t))) == NULL)
1333                 return (ZPROP_INVAL);
1334
1335         entry->pl_prop = prop;
1336         entry->pl_width = zprop_width(prop, &entry->pl_fixed, edp->type);
1337         entry->pl_all = B_TRUE;
1338
1339         *(edp->last) = entry;
1340         edp->last = &entry->pl_next;
1341
1342         return (ZPROP_CONT);
1343 }
1344
1345 int
1346 zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp, zfs_type_t type)
1347 {
1348         zprop_list_t *entry;
1349         zprop_list_t **last;
1350         expand_data_t exp;
1351
1352         if (*plp == NULL) {
1353                 /*
1354                  * If this is the very first time we've been called for an 'all'
1355                  * specification, expand the list to include all native
1356                  * properties.
1357                  */
1358                 last = plp;
1359
1360                 exp.last = last;
1361                 exp.hdl = hdl;
1362                 exp.type = type;
1363
1364                 if (zprop_iter_common(zprop_expand_list_cb, &exp, B_FALSE,
1365                     B_FALSE, type) == ZPROP_INVAL)
1366                         return (-1);
1367
1368                 /*
1369                  * Add 'name' to the beginning of the list, which is handled
1370                  * specially.
1371                  */
1372                 if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL)
1373                         return (-1);
1374
1375                 entry->pl_prop = (type == ZFS_TYPE_POOL) ?  ZPOOL_PROP_NAME :
1376                     ZFS_PROP_NAME;
1377                 entry->pl_width = zprop_width(entry->pl_prop,
1378                     &entry->pl_fixed, type);
1379                 entry->pl_all = B_TRUE;
1380                 entry->pl_next = *plp;
1381                 *plp = entry;
1382         }
1383         return (0);
1384 }
1385
1386 int
1387 zprop_iter(zprop_func func, void *cb, boolean_t show_all, boolean_t ordered,
1388     zfs_type_t type)
1389 {
1390         return (zprop_iter_common(func, cb, show_all, ordered, type));
1391 }