zfs/lib/libzfs/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 stat64 statbuf;
 627         struct extmnttab entry;
 628         int ret;
 629
 630         if (path[0] != '/' && strncmp(path, "./", strlen("./")) != 0) {
 631                 /*
 632                  * It's not a valid path, assume it's a name of type 'argtype'.
 633                  */
 634                 return (zfs_open(hdl, path, argtype));
 635         }
 636
 637         if (stat64(path, &statbuf) != 0) {
 638                 (void) fprintf(stderr, "%s: %s\n", path, strerror(errno));
 639                 return (NULL);
 640         }
 641
 642         rewind(hdl->libzfs_mnttab);
 643         while ((ret = getextmntent(hdl->libzfs_mnttab, &entry, 0)) == 0) {
 644                 if (makedevice(entry.mnt_major, entry.mnt_minor) ==
 645                     statbuf.st_dev) {
 646                         break;
 647                 }
 648         }
 649         if (ret != 0) {
 650                 return (NULL);
 651         }
 652
 653         if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
 654                 (void) fprintf(stderr, gettext("'%s': not a ZFS filesystem\n"),
 655                     path);
 656                 return (NULL);
 657         }
 658
 659         return (zfs_open(hdl, entry.mnt_special, ZFS_TYPE_FILESYSTEM));
 660 }
 661
 662 /*
 663  * Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from
 664  * an ioctl().
 665  */
 666 int
 667 zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len)
 668 {
 669         if (len == 0)
 670                 len = 2048;
 671         zc->zc_nvlist_dst_size = len;
 672         if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
 673             zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == NULL)
 674                 return (-1);
 675
 676         return (0);
 677 }
 678
 679 /*
 680  * Called when an ioctl() which returns an nvlist fails with ENOMEM.  This will
 681  * expand the nvlist to the size specified in 'zc_nvlist_dst_size', which was
 682  * filled in by the kernel to indicate the actual required size.
 683  */
 684 int
 685 zcmd_expand_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc)
 686 {
 687         free((void *)(uintptr_t)zc->zc_nvlist_dst);
 688         if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
 689             zfs_alloc(hdl, zc->zc_nvlist_dst_size))
 690             == NULL)
 691                 return (-1);
 692
 693         return (0);
 694 }
 695
 696 /*
 697  * Called to free the src and dst nvlists stored in the command structure.
 698  */
 699 void
 700 zcmd_free_nvlists(zfs_cmd_t *zc)
 701 {
 702         free((void *)(uintptr_t)zc->zc_nvlist_conf);
 703         free((void *)(uintptr_t)zc->zc_nvlist_src);
 704         free((void *)(uintptr_t)zc->zc_nvlist_dst);
 705 }
 706
 707 static int
 708 zcmd_write_nvlist_com(libzfs_handle_t *hdl, uint64_t *outnv, uint64_t *outlen,
 709     nvlist_t *nvl)
 710 {
 711         char *packed;
 712         size_t len;
 713
 714         verify(nvlist_size(nvl, &len, NV_ENCODE_NATIVE) == 0);
 715
 716         if ((packed = zfs_alloc(hdl, len)) == NULL)
 717                 return (-1);
 718
 719         verify(nvlist_pack(nvl, &packed, &len, NV_ENCODE_NATIVE, 0) == 0);
 720
 721         *outnv = (uint64_t)(uintptr_t)packed;
 722         *outlen = len;
 723
 724         return (0);
 725 }
 726
 727 int
 728 zcmd_write_conf_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl)
 729 {
 730         return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_conf,
 731             &zc->zc_nvlist_conf_size, nvl));
 732 }
 733
 734 int
 735 zcmd_write_src_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl)
 736 {
 737         return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_src,
 738             &zc->zc_nvlist_src_size, nvl));
 739 }
 740
 741 /*
 742  * Unpacks an nvlist from the ZFS ioctl command structure.
 743  */
 744 int
 745 zcmd_read_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t **nvlp)
 746 {
 747         if (nvlist_unpack((void *)(uintptr_t)zc->zc_nvlist_dst,
 748             zc->zc_nvlist_dst_size, nvlp, 0) != 0)
 749                 return (no_memory(hdl));
 750
 751         return (0);
 752 }
 753
 754 int
 755 zfs_ioctl(libzfs_handle_t *hdl, int request, zfs_cmd_t *zc)
 756 {
 757         int error;
 758
 759         zc->zc_history = (uint64_t)(uintptr_t)hdl->libzfs_log_str;
 760         error = ioctl(hdl->libzfs_fd, request, zc);
 761         if (hdl->libzfs_log_str) {
 762                 free(hdl->libzfs_log_str);
 763                 hdl->libzfs_log_str = NULL;
 764         }
 765         zc->zc_history = 0;
 766
 767         return (error);
 768 }
 769
 770 /*
 771  * ================================================================
 772  * API shared by zfs and zpool property management
 773  * ================================================================
 774  */
 775
 776 static void
 777 zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
 778 {
 779         zprop_list_t *pl = cbp->cb_proplist;
 780         int i;
 781         char *title;
 782         size_t len;
 783
 784         cbp->cb_first = B_FALSE;
 785         if (cbp->cb_scripted)
 786                 return;
 787
 788         /*
 789          * Start with the length of the column headers.
 790          */
 791         cbp->cb_colwidths[GET_COL_NAME] = strlen(dgettext(TEXT_DOMAIN, "NAME"));
 792         cbp->cb_colwidths[GET_COL_PROPERTY] = strlen(dgettext(TEXT_DOMAIN,
 793             "PROPERTY"));
 794         cbp->cb_colwidths[GET_COL_VALUE] = strlen(dgettext(TEXT_DOMAIN,
 795             "VALUE"));
 796         cbp->cb_colwidths[GET_COL_SOURCE] = strlen(dgettext(TEXT_DOMAIN,
 797             "SOURCE"));
 798
 799         /*
 800          * Go through and calculate the widths for each column.  For the
 801          * 'source' column, we kludge it up by taking the worst-case scenario of
 802          * inheriting from the longest name.  This is acceptable because in the
 803          * majority of cases 'SOURCE' is the last column displayed, and we don't
 804          * use the width anyway.  Note that the 'VALUE' column can be oversized,
 805          * if the name of the property is much longer the any values we find.
 806          */
 807         for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) {
 808                 /*
 809                  * 'PROPERTY' column
 810                  */
 811                 if (pl->pl_prop != ZPROP_INVAL) {
 812                         const char *propname = (type == ZFS_TYPE_POOL) ?
 813                             zpool_prop_to_name(pl->pl_prop) :
 814                             zfs_prop_to_name(pl->pl_prop);
 815
 816                         len = strlen(propname);
 817                         if (len > cbp->cb_colwidths[GET_COL_PROPERTY])
 818                                 cbp->cb_colwidths[GET_COL_PROPERTY] = len;
 819                 } else {
 820                         len = strlen(pl->pl_user_prop);
 821                         if (len > cbp->cb_colwidths[GET_COL_PROPERTY])
 822                                 cbp->cb_colwidths[GET_COL_PROPERTY] = len;
 823                 }
 824
 825                 /*
 826                  * 'VALUE' column
 827                  */
 828                 if ((pl->pl_prop != ZFS_PROP_NAME || !pl->pl_all) &&
 829                     pl->pl_width > cbp->cb_colwidths[GET_COL_VALUE])
 830                         cbp->cb_colwidths[GET_COL_VALUE] = pl->pl_width;
 831
 832                 /*
 833                  * 'NAME' and 'SOURCE' columns
 834                  */
 835                 if (pl->pl_prop == (type == ZFS_TYPE_POOL ? ZPOOL_PROP_NAME :
 836                     ZFS_PROP_NAME) &&
 837                     pl->pl_width > cbp->cb_colwidths[GET_COL_NAME]) {
 838                         cbp->cb_colwidths[GET_COL_NAME] = pl->pl_width;
 839                         cbp->cb_colwidths[GET_COL_SOURCE] = pl->pl_width +
 840                             strlen(dgettext(TEXT_DOMAIN, "inherited from"));
 841                 }
 842         }
 843
 844         /*
 845          * Now go through and print the headers.
 846          */
 847         for (i = 0; i < 4; i++) {
 848                 switch (cbp->cb_columns[i]) {
 849                 case GET_COL_NAME:
 850                         title = dgettext(TEXT_DOMAIN, "NAME");
 851                         break;
 852                 case GET_COL_PROPERTY:
 853                         title = dgettext(TEXT_DOMAIN, "PROPERTY");
 854                         break;
 855                 case GET_COL_VALUE:
 856                         title = dgettext(TEXT_DOMAIN, "VALUE");
 857                         break;
 858                 case GET_COL_SOURCE:
 859                         title = dgettext(TEXT_DOMAIN, "SOURCE");
 860                         break;
 861                 default:
 862                         title = NULL;
 863                 }
 864
 865                 if (title != NULL) {
 866                         if (i == 3 || cbp->cb_columns[i + 1] == 0)
 867                                 (void) printf("%s", title);
 868                         else
 869                                 (void) printf("%-*s  ",
 870                                     cbp->cb_colwidths[cbp->cb_columns[i]],
 871                                     title);
 872                 }
 873         }
 874         (void) printf("\n");
 875 }
 876
 877 /*
 878  * Display a single line of output, according to the settings in the callback
 879  * structure.
 880  */
 881 void
 882 zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp,
 883     const char *propname, const char *value, zprop_source_t sourcetype,
 884     const char *source)
 885 {
 886         int i;
 887         const char *str;
 888         char buf[128];
 889
 890         /*
 891          * Ignore those source types that the user has chosen to ignore.
 892          */
 893         if ((sourcetype & cbp->cb_sources) == 0)
 894                 return;
 895
 896         if (cbp->cb_first)
 897                 zprop_print_headers(cbp, cbp->cb_type);
 898
 899         for (i = 0; i < 4; i++) {
 900                 switch (cbp->cb_columns[i]) {
 901                 case GET_COL_NAME:
 902                         str = name;
 903                         break;
 904
 905                 case GET_COL_PROPERTY:
 906                         str = propname;
 907                         break;
 908
 909                 case GET_COL_VALUE:
 910                         str = value;
 911                         break;
 912
 913                 case GET_COL_SOURCE:
 914                         switch (sourcetype) {
 915                         case ZPROP_SRC_NONE:
 916                                 str = "-";
 917                                 break;
 918
 919                         case ZPROP_SRC_DEFAULT:
 920                                 str = "default";
 921                                 break;
 922
 923                         case ZPROP_SRC_LOCAL:
 924                                 str = "local";
 925                                 break;
 926
 927                         case ZPROP_SRC_TEMPORARY:
 928                                 str = "temporary";
 929                                 break;
 930
 931                         case ZPROP_SRC_INHERITED:
 932                                 (void) snprintf(buf, sizeof (buf),
 933                                     "inherited from %s", source);
 934                                 str = buf;
 935                                 break;
 936                         }
 937                         break;
 938
 939                 default:
 940                         continue;
 941                 }
 942
 943                 if (cbp->cb_columns[i + 1] == 0)
 944                         (void) printf("%s", str);
 945                 else if (cbp->cb_scripted)
 946                         (void) printf("%s\t", str);
 947                 else
 948                         (void) printf("%-*s  ",
 949                             cbp->cb_colwidths[cbp->cb_columns[i]],
 950                             str);
 951
 952         }
 953
 954         (void) printf("\n");
 955 }
 956
 957 /*
 958  * Given a numeric suffix, convert the value into a number of bits that the
 959  * resulting value must be shifted.
 960  */
 961 static int
 962 str2shift(libzfs_handle_t *hdl, const char *buf)
 963 {
 964         const char *ends = "BKMGTPEZ";
 965         int i;
 966
 967         if (buf[0] == '\0')
 968                 return (0);
 969         for (i = 0; i < strlen(ends); i++) {
 970                 if (toupper(buf[0]) == ends[i])
 971                         break;
 972         }
 973         if (i == strlen(ends)) {
 974                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 975                     "invalid numeric suffix '%s'"), buf);
 976                 return (-1);
 977         }
 978
 979         /*
 980          * We want to allow trailing 'b' characters for 'GB' or 'Mb'.  But don't
 981          * allow 'BB' - that's just weird.
 982          */
 983         if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0' &&
 984             toupper(buf[0]) != 'B'))
 985                 return (10*i);
 986
 987         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 988             "invalid numeric suffix '%s'"), buf);
 989         return (-1);
 990 }
 991
 992 /*
 993  * Convert a string of the form '100G' into a real number.  Used when setting
 994  * properties or creating a volume.  'buf' is used to place an extended error
 995  * message for the caller to use.
 996  */
 997 int
 998 zfs_nicestrtonum(libzfs_handle_t *hdl, const char *value, uint64_t *num)
 999 {
1000         char *end;
1001         int shift;
1002
1003         *num = 0;
1004
1005         /* Check to see if this looks like a number.  */
1006         if ((value[0] < '0' || value[0] > '9') && value[0] != '.') {
1007                 if (hdl)
1008                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1009                             "bad numeric value '%s'"), value);
1010                 return (-1);
1011         }
1012
1013         /* Rely on stroll() to process the numeric portion.  */
1014         errno = 0;
1015         *num = strtoll(value, &end, 10);
1016
1017         /*
1018          * Check for ERANGE, which indicates that the value is too large to fit
1019          * in a 64-bit value.
1020          */
1021         if (errno == ERANGE) {
1022                 if (hdl)
1023                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1024                             "numeric value is too large"));
1025                 return (-1);
1026         }
1027
1028         /*
1029          * If we have a decimal value, then do the computation with floating
1030          * point arithmetic.  Otherwise, use standard arithmetic.
1031          */
1032         if (*end == '.') {
1033                 double fval = strtod(value, &end);
1034
1035                 if ((shift = str2shift(hdl, end)) == -1)
1036                         return (-1);
1037
1038                 fval *= pow(2, shift);
1039
1040                 if (fval > UINT64_MAX) {
1041                         if (hdl)
1042                                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1043                                     "numeric value is too large"));
1044                         return (-1);
1045                 }
1046
1047                 *num = (uint64_t)fval;
1048         } else {
1049                 if ((shift = str2shift(hdl, end)) == -1)
1050                         return (-1);
1051
1052                 /* Check for overflow */
1053                 if (shift >= 64 || (*num << shift) >> shift != *num) {
1054                         if (hdl)
1055                                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1056                                     "numeric value is too large"));
1057                         return (-1);
1058                 }
1059
1060                 *num <<= shift;
1061         }
1062
1063         return (0);
1064 }
1065
1066 /*
1067  * Given a propname=value nvpair to set, parse any numeric properties
1068  * (index, boolean, etc) if they are specified as strings and add the
1069  * resulting nvpair to the returned nvlist.
1070  *
1071  * At the DSL layer, all properties are either 64-bit numbers or strings.
1072  * We want the user to be able to ignore this fact and specify properties
1073  * as native values (numbers, for example) or as strings (to simplify
1074  * command line utilities).  This also handles converting index types
1075  * (compression, checksum, etc) from strings to their on-disk index.
1076  */
1077 int
1078 zprop_parse_value(libzfs_handle_t *hdl, nvpair_t *elem, int prop,
1079     zfs_type_t type, nvlist_t *ret, char **svalp, uint64_t *ivalp,
1080     const char *errbuf)
1081 {
1082         data_type_t datatype = nvpair_type(elem);
1083         zprop_type_t proptype;
1084         const char *propname;
1085         char *value;
1086         boolean_t isnone = B_FALSE;
1087
1088         if (type == ZFS_TYPE_POOL) {
1089                 proptype = zpool_prop_get_type(prop);
1090                 propname = zpool_prop_to_name(prop);
1091         } else {
1092                 proptype = zfs_prop_get_type(prop);
1093                 propname = zfs_prop_to_name(prop);
1094         }
1095
1096         /*
1097          * Convert any properties to the internal DSL value types.
1098          */
1099         *svalp = NULL;
1100         *ivalp = 0;
1101
1102         switch (proptype) {
1103         case PROP_TYPE_STRING:
1104                 if (datatype != DATA_TYPE_STRING) {
1105                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1106                             "'%s' must be a string"), nvpair_name(elem));
1107                         goto error;
1108                 }
1109                 (void) nvpair_value_string(elem, svalp);
1110                 if (strlen(*svalp) >= ZFS_MAXPROPLEN) {
1111                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1112                             "'%s' is too long"), nvpair_name(elem));
1113                         goto error;
1114                 }
1115                 break;
1116
1117         case PROP_TYPE_NUMBER:
1118                 if (datatype == DATA_TYPE_STRING) {
1119                         (void) nvpair_value_string(elem, &value);
1120                         if (strcmp(value, "none") == 0) {
1121                                 isnone = B_TRUE;
1122                         } else if (zfs_nicestrtonum(hdl, value, ivalp)
1123                             != 0) {
1124                                 goto error;
1125                         }
1126                 } else if (datatype == DATA_TYPE_UINT64) {
1127                         (void) nvpair_value_uint64(elem, ivalp);
1128                 } else {
1129                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1130                             "'%s' must be a number"), nvpair_name(elem));
1131                         goto error;
1132                 }
1133
1134                 /*
1135                  * Quota special: force 'none' and don't allow 0.
1136                  */
1137                 if ((type & ZFS_TYPE_DATASET) && *ivalp == 0 && !isnone &&
1138                     (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_REFQUOTA)) {
1139                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1140                             "use 'none' to disable quota/refquota"));
1141                         goto error;
1142                 }
1143                 break;
1144
1145         case PROP_TYPE_INDEX:
1146                 if (datatype != DATA_TYPE_STRING) {
1147                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1148                             "'%s' must be a string"), nvpair_name(elem));
1149                         goto error;
1150                 }
1151
1152                 (void) nvpair_value_string(elem, &value);
1153
1154                 if (zprop_string_to_index(prop, value, ivalp, type) != 0) {
1155                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1156                             "'%s' must be one of '%s'"), propname,
1157                             zprop_values(prop, type));
1158                         goto error;
1159                 }
1160                 break;
1161
1162         default:
1163                 abort();
1164         }
1165
1166         /*
1167          * Add the result to our return set of properties.
1168          */
1169         if (*svalp != NULL) {
1170                 if (nvlist_add_string(ret, propname, *svalp) != 0) {
1171                         (void) no_memory(hdl);
1172                         return (-1);
1173                 }
1174         } else {
1175                 if (nvlist_add_uint64(ret, propname, *ivalp) != 0) {
1176                         (void) no_memory(hdl);
1177                         return (-1);
1178                 }
1179         }
1180
1181         return (0);
1182 error:
1183         (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1184         return (-1);
1185 }
1186
1187 static int
1188 addlist(libzfs_handle_t *hdl, char *propname, zprop_list_t **listp,
1189     zfs_type_t type)
1190 {
1191         int prop;
1192         zprop_list_t *entry;
1193
1194         prop = zprop_name_to_prop(propname, type);
1195
1196         if (prop != ZPROP_INVAL && !zprop_valid_for_type(prop, type))
1197                 prop = ZPROP_INVAL;
1198
1199         /*
1200          * When no property table entry can be found, return failure if
1201          * this is a pool property or if this isn't a user-defined
1202          * dataset property,
1203          */
1204         if (prop == ZPROP_INVAL && (type == ZFS_TYPE_POOL ||
1205             !zfs_prop_user(propname))) {
1206                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1207                     "invalid property '%s'"), propname);
1208                 return (zfs_error(hdl, EZFS_BADPROP,
1209                     dgettext(TEXT_DOMAIN, "bad property list")));
1210         }
1211
1212         if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL)
1213                 return (-1);
1214
1215         entry->pl_prop = prop;
1216         if (prop == ZPROP_INVAL) {
1217                 if ((entry->pl_user_prop = zfs_strdup(hdl, propname)) == NULL) {
1218                         free(entry);
1219                         return (-1);
1220                 }
1221                 entry->pl_width = strlen(propname);
1222         } else {
1223                 entry->pl_width = zprop_width(prop, &entry->pl_fixed,
1224                     type);
1225         }
1226
1227         *listp = entry;
1228
1229         return (0);
1230 }
1231
1232 /*
1233  * Given a comma-separated list of properties, construct a property list
1234  * containing both user-defined and native properties.  This function will
1235  * return a NULL list if 'all' is specified, which can later be expanded
1236  * by zprop_expand_list().
1237  */
1238 int
1239 zprop_get_list(libzfs_handle_t *hdl, char *props, zprop_list_t **listp,
1240     zfs_type_t type)
1241 {
1242         *listp = NULL;
1243
1244         /*
1245          * If 'all' is specified, return a NULL list.
1246          */
1247         if (strcmp(props, "all") == 0)
1248                 return (0);
1249
1250         /*
1251          * If no props were specified, return an error.
1252          */
1253         if (props[0] == '\0') {
1254                 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1255                     "no properties specified"));
1256                 return (zfs_error(hdl, EZFS_BADPROP, dgettext(TEXT_DOMAIN,
1257                     "bad property list")));
1258         }
1259
1260         /*
1261          * It would be nice to use getsubopt() here, but the inclusion of column
1262          * aliases makes this more effort than it's worth.
1263          */
1264         while (*props != '\0') {
1265                 size_t len;
1266                 char *p;
1267                 char c;
1268
1269                 if ((p = strchr(props, ',')) == NULL) {
1270                         len = strlen(props);
1271                         p = props + len;
1272                 } else {
1273                         len = p - props;
1274                 }
1275
1276                 /*
1277                  * Check for empty options.
1278                  */
1279                 if (len == 0) {
1280                         zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1281                             "empty property name"));
1282                         return (zfs_error(hdl, EZFS_BADPROP,
1283                             dgettext(TEXT_DOMAIN, "bad property list")));
1284                 }
1285
1286                 /*
1287                  * Check all regular property names.
1288                  */
1289                 c = props[len];
1290                 props[len] = '\0';
1291
1292                 if (strcmp(props, "space") == 0) {
1293                         static char *spaceprops[] = {
1294                                 "name", "avail", "used", "usedbysnapshots",
1295                                 "usedbydataset", "usedbyrefreservation",
1296                                 "usedbychildren", NULL
1297                         };
1298                         int i;
1299
1300                         for (i = 0; spaceprops[i]; i++) {
1301                                 if (addlist(hdl, spaceprops[i], listp, type))
1302                                         return (-1);
1303                                 listp = &(*listp)->pl_next;
1304                         }
1305                 } else {
1306                         if (addlist(hdl, props, listp, type))
1307                                 return (-1);
1308                         listp = &(*listp)->pl_next;
1309                 }
1310
1311                 props = p;
1312                 if (c == ',')
1313                         props++;
1314         }
1315
1316         return (0);
1317 }
1318
1319 void
1320 zprop_free_list(zprop_list_t *pl)
1321 {
1322         zprop_list_t *next;
1323
1324         while (pl != NULL) {
1325                 next = pl->pl_next;
1326                 free(pl->pl_user_prop);
1327                 free(pl);
1328                 pl = next;
1329         }
1330 }
1331
1332 typedef struct expand_data {
1333         zprop_list_t    **last;
1334         libzfs_handle_t *hdl;
1335         zfs_type_t type;
1336 } expand_data_t;
1337
1338 int
1339 zprop_expand_list_cb(int prop, void *cb)
1340 {
1341         zprop_list_t *entry;
1342         expand_data_t *edp = cb;
1343
1344         if ((entry = zfs_alloc(edp->hdl, sizeof (zprop_list_t))) == NULL)
1345                 return (ZPROP_INVAL);
1346
1347         entry->pl_prop = prop;
1348         entry->pl_width = zprop_width(prop, &entry->pl_fixed, edp->type);
1349         entry->pl_all = B_TRUE;
1350
1351         *(edp->last) = entry;
1352         edp->last = &entry->pl_next;
1353
1354         return (ZPROP_CONT);
1355 }
1356
1357 int
1358 zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp, zfs_type_t type)
1359 {
1360         zprop_list_t *entry;
1361         zprop_list_t **last;
1362         expand_data_t exp;
1363
1364         if (*plp == NULL) {
1365                 /*
1366                  * If this is the very first time we've been called for an 'all'
1367                  * specification, expand the list to include all native
1368                  * properties.
1369                  */
1370                 last = plp;
1371
1372                 exp.last = last;
1373                 exp.hdl = hdl;
1374                 exp.type = type;
1375
1376                 if (zprop_iter_common(zprop_expand_list_cb, &exp, B_FALSE,
1377                     B_FALSE, type) == ZPROP_INVAL)
1378                         return (-1);
1379
1380                 /*
1381                  * Add 'name' to the beginning of the list, which is handled
1382                  * specially.
1383                  */
1384                 if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL)
1385                         return (-1);
1386
1387                 entry->pl_prop = (type == ZFS_TYPE_POOL) ?  ZPOOL_PROP_NAME :
1388                     ZFS_PROP_NAME;
1389                 entry->pl_width = zprop_width(entry->pl_prop,
1390                     &entry->pl_fixed, type);
1391                 entry->pl_all = B_TRUE;
1392                 entry->pl_next = *plp;
1393                 *plp = entry;
1394         }
1395         return (0);
1396 }
1397
1398 int
1399 zprop_iter(zprop_func func, void *cb, boolean_t show_all, boolean_t ordered,
1400     zfs_type_t type)
1401 {
1402         return (zprop_iter_common(func, cb, show_all, ordered, type));
1403 }