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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011 by Delphix. All rights reserved.
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_INVALIDNAME:
98 return (dgettext(TEXT_DOMAIN, "invalid name"));
99 case EZFS_BADRESTORE:
100 return (dgettext(TEXT_DOMAIN, "unable to restore to "
101 "destination"));
102 case EZFS_BADBACKUP:
103 return (dgettext(TEXT_DOMAIN, "backup failed"));
104 case EZFS_BADTARGET:
105 return (dgettext(TEXT_DOMAIN, "invalid target vdev"));
106 case EZFS_NODEVICE:
107 return (dgettext(TEXT_DOMAIN, "no such device in pool"));
108 case EZFS_BADDEV:
109 return (dgettext(TEXT_DOMAIN, "invalid device"));
110 case EZFS_NOREPLICAS:
111 return (dgettext(TEXT_DOMAIN, "no valid replicas"));
112 case EZFS_RESILVERING:
113 return (dgettext(TEXT_DOMAIN, "currently resilvering"));
114 case EZFS_BADVERSION:
115 return (dgettext(TEXT_DOMAIN, "unsupported version"));
116 case EZFS_POOLUNAVAIL:
117 return (dgettext(TEXT_DOMAIN, "pool is unavailable"));
118 case EZFS_DEVOVERFLOW:
119 return (dgettext(TEXT_DOMAIN, "too many devices in one vdev"));
120 case EZFS_BADPATH:
121 return (dgettext(TEXT_DOMAIN, "must be an absolute path"));
122 case EZFS_CROSSTARGET:
123 return (dgettext(TEXT_DOMAIN, "operation crosses datasets or "
124 "pools"));
125 case EZFS_ZONED:
126 return (dgettext(TEXT_DOMAIN, "dataset in use by local zone"));
127 case EZFS_MOUNTFAILED:
128 return (dgettext(TEXT_DOMAIN, "mount failed"));
129 case EZFS_UMOUNTFAILED:
130 return (dgettext(TEXT_DOMAIN, "umount failed"));
131 case EZFS_UNSHARENFSFAILED:
132 return (dgettext(TEXT_DOMAIN, "unshare(1M) failed"));
133 case EZFS_SHARENFSFAILED:
134 return (dgettext(TEXT_DOMAIN, "share(1M) failed"));
135 case EZFS_UNSHARESMBFAILED:
136 return (dgettext(TEXT_DOMAIN, "smb remove share failed"));
137 case EZFS_SHARESMBFAILED:
138 return (dgettext(TEXT_DOMAIN, "smb add share failed"));
139 case EZFS_PERM:
140 return (dgettext(TEXT_DOMAIN, "permission denied"));
141 case EZFS_NOSPC:
142 return (dgettext(TEXT_DOMAIN, "out of space"));
143 case EZFS_FAULT:
144 return (dgettext(TEXT_DOMAIN, "bad address"));
145 case EZFS_IO:
146 return (dgettext(TEXT_DOMAIN, "I/O error"));
147 case EZFS_INTR:
148 return (dgettext(TEXT_DOMAIN, "signal received"));
149 case EZFS_ISSPARE:
150 return (dgettext(TEXT_DOMAIN, "device is reserved as a hot "
151 "spare"));
152 case EZFS_INVALCONFIG:
153 return (dgettext(TEXT_DOMAIN, "invalid vdev configuration"));
154 case EZFS_RECURSIVE:
155 return (dgettext(TEXT_DOMAIN, "recursive dataset dependency"));
156 case EZFS_NOHISTORY:
157 return (dgettext(TEXT_DOMAIN, "no history available"));
158 case EZFS_POOLPROPS:
159 return (dgettext(TEXT_DOMAIN, "failed to retrieve "
160 "pool properties"));
161 case EZFS_POOL_NOTSUP:
162 return (dgettext(TEXT_DOMAIN, "operation not supported "
163 "on this type of pool"));
164 case EZFS_POOL_INVALARG:
165 return (dgettext(TEXT_DOMAIN, "invalid argument for "
166 "this pool operation"));
167 case EZFS_NAMETOOLONG:
168 return (dgettext(TEXT_DOMAIN, "dataset name is too long"));
169 case EZFS_OPENFAILED:
170 return (dgettext(TEXT_DOMAIN, "open failed"));
171 case EZFS_NOCAP:
172 return (dgettext(TEXT_DOMAIN,
173 "disk capacity information could not be retrieved"));
174 case EZFS_LABELFAILED:
175 return (dgettext(TEXT_DOMAIN, "write of label failed"));
176 case EZFS_BADWHO:
177 return (dgettext(TEXT_DOMAIN, "invalid user/group"));
178 case EZFS_BADPERM:
179 return (dgettext(TEXT_DOMAIN, "invalid permission"));
180 case EZFS_BADPERMSET:
181 return (dgettext(TEXT_DOMAIN, "invalid permission set name"));
182 case EZFS_NODELEGATION:
183 return (dgettext(TEXT_DOMAIN, "delegated administration is "
184 "disabled on pool"));
185 case EZFS_BADCACHE:
186 return (dgettext(TEXT_DOMAIN, "invalid or missing cache file"));
187 case EZFS_ISL2CACHE:
188 return (dgettext(TEXT_DOMAIN, "device is in use as a cache"));
189 case EZFS_VDEVNOTSUP:
190 return (dgettext(TEXT_DOMAIN, "vdev specification is not "
191 "supported"));
192 case EZFS_NOTSUP:
193 return (dgettext(TEXT_DOMAIN, "operation not supported "
194 "on this dataset"));
195 case EZFS_ACTIVE_SPARE:
196 return (dgettext(TEXT_DOMAIN, "pool has active shared spare "
197 "device"));
198 case EZFS_UNPLAYED_LOGS:
199 return (dgettext(TEXT_DOMAIN, "log device has unplayed intent "
200 "logs"));
201 case EZFS_REFTAG_RELE:
202 return (dgettext(TEXT_DOMAIN, "no such tag on this dataset"));
203 case EZFS_REFTAG_HOLD:
204 return (dgettext(TEXT_DOMAIN, "tag already exists on this "
205 "dataset"));
206 case EZFS_TAGTOOLONG:
207 return (dgettext(TEXT_DOMAIN, "tag too long"));
208 case EZFS_PIPEFAILED:
209 return (dgettext(TEXT_DOMAIN, "pipe create failed"));
210 case EZFS_THREADCREATEFAILED:
211 return (dgettext(TEXT_DOMAIN, "thread create failed"));
212 case EZFS_POSTSPLIT_ONLINE:
213 return (dgettext(TEXT_DOMAIN, "disk was split from this pool "
214 "into a new one"));
215 case EZFS_SCRUBBING:
216 return (dgettext(TEXT_DOMAIN, "currently scrubbing; "
217 "use 'zpool scrub -s' to cancel current scrub"));
218 case EZFS_NO_SCRUB:
219 return (dgettext(TEXT_DOMAIN, "there is no active scrub"));
220 case EZFS_DIFF:
221 return (dgettext(TEXT_DOMAIN, "unable to generate diffs"));
222 case EZFS_DIFFDATA:
223 return (dgettext(TEXT_DOMAIN, "invalid diff data"));
224 case EZFS_POOLREADONLY:
225 return (dgettext(TEXT_DOMAIN, "pool is read-only"));
226 case EZFS_UNKNOWN:
227 return (dgettext(TEXT_DOMAIN, "unknown error"));
228 default:
229 assert(hdl->libzfs_error == 0);
230 return (dgettext(TEXT_DOMAIN, "no error"));
231 }
232 }
233
234 /*PRINTFLIKE2*/
235 void
236 zfs_error_aux(libzfs_handle_t *hdl, const char *fmt, ...)
237 {
238 va_list ap;
239
240 va_start(ap, fmt);
241
242 (void) vsnprintf(hdl->libzfs_desc, sizeof (hdl->libzfs_desc),
243 fmt, ap);
244 hdl->libzfs_desc_active = 1;
245
246 va_end(ap);
247 }
248
249 static void
250 zfs_verror(libzfs_handle_t *hdl, int error, const char *fmt, va_list ap)
251 {
252 (void) vsnprintf(hdl->libzfs_action, sizeof (hdl->libzfs_action),
253 fmt, ap);
254 hdl->libzfs_error = error;
255
256 if (hdl->libzfs_desc_active)
257 hdl->libzfs_desc_active = 0;
258 else
259 hdl->libzfs_desc[0] = '\0';
260
261 if (hdl->libzfs_printerr) {
262 if (error == EZFS_UNKNOWN) {
263 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "internal "
264 "error: %s\n"), libzfs_error_description(hdl));
265 abort();
266 }
267
268 (void) fprintf(stderr, "%s: %s\n", hdl->libzfs_action,
269 libzfs_error_description(hdl));
270 if (error == EZFS_NOMEM)
271 exit(1);
272 }
273 }
274
275 int
276 zfs_error(libzfs_handle_t *hdl, int error, const char *msg)
277 {
278 return (zfs_error_fmt(hdl, error, "%s", msg));
279 }
280
281 /*PRINTFLIKE3*/
282 int
283 zfs_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
284 {
285 va_list ap;
286
287 va_start(ap, fmt);
288
289 zfs_verror(hdl, error, fmt, ap);
290
291 va_end(ap);
292
293 return (-1);
294 }
295
296 static int
297 zfs_common_error(libzfs_handle_t *hdl, int error, const char *fmt,
298 va_list ap)
299 {
300 switch (error) {
301 case EPERM:
302 case EACCES:
303 zfs_verror(hdl, EZFS_PERM, fmt, ap);
304 return (-1);
305
306 case ECANCELED:
307 zfs_verror(hdl, EZFS_NODELEGATION, fmt, ap);
308 return (-1);
309
310 case EIO:
311 zfs_verror(hdl, EZFS_IO, fmt, ap);
312 return (-1);
313
314 case EFAULT:
315 zfs_verror(hdl, EZFS_FAULT, fmt, ap);
316 return (-1);
317
318 case EINTR:
319 zfs_verror(hdl, EZFS_INTR, fmt, ap);
320 return (-1);
321 }
322
323 return (0);
324 }
325
326 int
327 zfs_standard_error(libzfs_handle_t *hdl, int error, const char *msg)
328 {
329 return (zfs_standard_error_fmt(hdl, error, "%s", msg));
330 }
331
332 /*PRINTFLIKE3*/
333 int
334 zfs_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
335 {
336 va_list ap;
337
338 va_start(ap, fmt);
339
340 if (zfs_common_error(hdl, error, fmt, ap) != 0) {
341 va_end(ap);
342 return (-1);
343 }
344
345 switch (error) {
346 case ENXIO:
347 case ENODEV:
348 case EPIPE:
349 zfs_verror(hdl, EZFS_IO, fmt, ap);
350 break;
351
352 case ENOENT:
353 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
354 "dataset does not exist"));
355 zfs_verror(hdl, EZFS_NOENT, fmt, ap);
356 break;
357
358 case ENOSPC:
359 case EDQUOT:
360 zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
361 return (-1);
362
363 case EEXIST:
364 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
365 "dataset already exists"));
366 zfs_verror(hdl, EZFS_EXISTS, fmt, ap);
367 break;
368
369 case EBUSY:
370 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
371 "dataset is busy"));
372 zfs_verror(hdl, EZFS_BUSY, fmt, ap);
373 break;
374 case EROFS:
375 zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
376 break;
377 case ENAMETOOLONG:
378 zfs_verror(hdl, EZFS_NAMETOOLONG, fmt, ap);
379 break;
380 case ENOTSUP:
381 zfs_verror(hdl, EZFS_BADVERSION, fmt, ap);
382 break;
383 case EAGAIN:
384 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
385 "pool I/O is currently suspended"));
386 zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
387 break;
388 default:
389 zfs_error_aux(hdl, strerror(error));
390 zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
391 break;
392 }
393
394 va_end(ap);
395 return (-1);
396 }
397
398 int
399 zpool_standard_error(libzfs_handle_t *hdl, int error, const char *msg)
400 {
401 return (zpool_standard_error_fmt(hdl, error, "%s", msg));
402 }
403
404 /*PRINTFLIKE3*/
405 int
406 zpool_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
407 {
408 va_list ap;
409
410 va_start(ap, fmt);
411
412 if (zfs_common_error(hdl, error, fmt, ap) != 0) {
413 va_end(ap);
414 return (-1);
415 }
416
417 switch (error) {
418 case ENODEV:
419 zfs_verror(hdl, EZFS_NODEVICE, fmt, ap);
420 break;
421
422 case ENOENT:
423 zfs_error_aux(hdl,
424 dgettext(TEXT_DOMAIN, "no such pool or dataset"));
425 zfs_verror(hdl, EZFS_NOENT, fmt, ap);
426 break;
427
428 case EEXIST:
429 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
430 "pool already exists"));
431 zfs_verror(hdl, EZFS_EXISTS, fmt, ap);
432 break;
433
434 case EBUSY:
435 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool is busy"));
436 zfs_verror(hdl, EZFS_BUSY, fmt, ap);
437 break;
438
439 case ENXIO:
440 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
441 "one or more devices is currently unavailable"));
442 zfs_verror(hdl, EZFS_BADDEV, fmt, ap);
443 break;
444
445 case ENAMETOOLONG:
446 zfs_verror(hdl, EZFS_DEVOVERFLOW, fmt, ap);
447 break;
448
449 case ENOTSUP:
450 zfs_verror(hdl, EZFS_POOL_NOTSUP, fmt, ap);
451 break;
452
453 case EINVAL:
454 zfs_verror(hdl, EZFS_POOL_INVALARG, fmt, ap);
455 break;
456
457 case ENOSPC:
458 case EDQUOT:
459 zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
460 return (-1);
461
462 case EAGAIN:
463 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
464 "pool I/O is currently suspended"));
465 zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
466 break;
467
468 case EROFS:
469 zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
470 break;
471
472 default:
473 zfs_error_aux(hdl, strerror(error));
474 zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
475 }
476
477 va_end(ap);
478 return (-1);
479 }
480
481 /*
482 * Display an out of memory error message and abort the current program.
483 */
484 int
485 no_memory(libzfs_handle_t *hdl)
486 {
487 return (zfs_error(hdl, EZFS_NOMEM, "internal error"));
488 }
489
490 /*
491 * A safe form of malloc() which will die if the allocation fails.
492 */
493 void *
494 zfs_alloc(libzfs_handle_t *hdl, size_t size)
495 {
496 void *data;
497
498 if ((data = calloc(1, size)) == NULL)
499 (void) no_memory(hdl);
500
501 return (data);
502 }
503
504 /*
505 * A safe form of asprintf() which will die if the allocation fails.
506 */
507 /*PRINTFLIKE2*/
508 char *
509 zfs_asprintf(libzfs_handle_t *hdl, const char *fmt, ...)
510 {
511 va_list ap;
512 char *ret;
513 int err;
514
515 va_start(ap, fmt);
516
517 err = vasprintf(&ret, fmt, ap);
518
519 va_end(ap);
520
521 if (err < 0)
522 (void) no_memory(hdl);
523
524 return (ret);
525 }
526
527 /*
528 * A safe form of realloc(), which also zeroes newly allocated space.
529 */
530 void *
531 zfs_realloc(libzfs_handle_t *hdl, void *ptr, size_t oldsize, size_t newsize)
532 {
533 void *ret;
534
535 if ((ret = realloc(ptr, newsize)) == NULL) {
536 (void) no_memory(hdl);
537 return (NULL);
538 }
539
540 bzero((char *)ret + oldsize, (newsize - oldsize));
541 return (ret);
542 }
543
544 /*
545 * A safe form of strdup() which will die if the allocation fails.
546 */
547 char *
548 zfs_strdup(libzfs_handle_t *hdl, const char *str)
549 {
550 char *ret;
551
552 if ((ret = strdup(str)) == NULL)
553 (void) no_memory(hdl);
554
555 return (ret);
556 }
557
558 /*
559 * Convert a number to an appropriately human-readable output.
560 */
561 void
562 zfs_nicenum(uint64_t num, char *buf, size_t buflen)
563 {
564 uint64_t n = num;
565 int index = 0;
566 char u;
567
568 while (n >= 1024) {
569 n /= 1024;
570 index++;
571 }
572
573 u = " KMGTPE"[index];
574
575 if (index == 0) {
576 (void) snprintf(buf, buflen, "%llu", n);
577 } else if ((num & ((1ULL << 10 * index) - 1)) == 0) {
578 /*
579 * If this is an even multiple of the base, always display
580 * without any decimal precision.
581 */
582 (void) snprintf(buf, buflen, "%llu%c", n, u);
583 } else {
584 /*
585 * We want to choose a precision that reflects the best choice
586 * for fitting in 5 characters. This can get rather tricky when
587 * we have numbers that are very close to an order of magnitude.
588 * For example, when displaying 10239 (which is really 9.999K),
589 * we want only a single place of precision for 10.0K. We could
590 * develop some complex heuristics for this, but it's much
591 * easier just to try each combination in turn.
592 */
593 int i;
594 for (i = 2; i >= 0; i--) {
595 if (snprintf(buf, buflen, "%.*f%c", i,
596 (double)num / (1ULL << 10 * index), u) <= 5)
597 break;
598 }
599 }
600 }
601
602 void
603 libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr)
604 {
605 hdl->libzfs_printerr = printerr;
606 }
607
608 libzfs_handle_t *
609 libzfs_init(void)
610 {
611 libzfs_handle_t *hdl;
612
613 if ((hdl = calloc(1, sizeof (libzfs_handle_t))) == NULL) {
614 return (NULL);
615 }
616
617 if ((hdl->libzfs_fd = open(ZFS_DEV, O_RDWR)) < 0) {
618 free(hdl);
619 return (NULL);
620 }
621
622 if ((hdl->libzfs_mnttab = fopen(MNTTAB, "r")) == NULL) {
623 (void) close(hdl->libzfs_fd);
624 free(hdl);
625 return (NULL);
626 }
627
628 hdl->libzfs_sharetab = fopen("/etc/dfs/sharetab", "r");
629
630 zfs_prop_init();
631 zpool_prop_init();
632 libzfs_mnttab_init(hdl);
633
634 return (hdl);
635 }
636
637 void
638 libzfs_fini(libzfs_handle_t *hdl)
639 {
640 (void) close(hdl->libzfs_fd);
641 if (hdl->libzfs_mnttab)
642 (void) fclose(hdl->libzfs_mnttab);
643 if (hdl->libzfs_sharetab)
644 (void) fclose(hdl->libzfs_sharetab);
645 zfs_uninit_libshare(hdl);
646 if (hdl->libzfs_log_str)
647 (void) free(hdl->libzfs_log_str);
648 zpool_free_handles(hdl);
649 libzfs_fru_clear(hdl, B_TRUE);
650 namespace_clear(hdl);
651 libzfs_mnttab_fini(hdl);
652 free(hdl);
653 }
654
655 libzfs_handle_t *
656 zpool_get_handle(zpool_handle_t *zhp)
657 {
658 return (zhp->zpool_hdl);
659 }
660
661 libzfs_handle_t *
662 zfs_get_handle(zfs_handle_t *zhp)
663 {
664 return (zhp->zfs_hdl);
665 }
666
667 zpool_handle_t *
668 zfs_get_pool_handle(const zfs_handle_t *zhp)
669 {
670 return (zhp->zpool_hdl);
671 }
672
673 /*
674 * Given a name, determine whether or not it's a valid path
675 * (starts with '/' or "./"). If so, walk the mnttab trying
676 * to match the device number. If not, treat the path as an
677 * fs/vol/snap name.
678 */
679 zfs_handle_t *
680 zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype)
681 {
682 struct stat64 statbuf;
683 struct extmnttab entry;
684 int ret;
685
686 if (path[0] != '/' && strncmp(path, "./", strlen("./")) != 0) {
687 /*
688 * It's not a valid path, assume it's a name of type 'argtype'.
689 */
690 return (zfs_open(hdl, path, argtype));
691 }
692
693 if (stat64(path, &statbuf) != 0) {
694 (void) fprintf(stderr, "%s: %s\n", path, strerror(errno));
695 return (NULL);
696 }
697
698 rewind(hdl->libzfs_mnttab);
699 while ((ret = getextmntent(hdl->libzfs_mnttab, &entry, 0)) == 0) {
700 if (makedevice(entry.mnt_major, entry.mnt_minor) ==
701 statbuf.st_dev) {
702 break;
703 }
704 }
705 if (ret != 0) {
706 return (NULL);
707 }
708
709 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
710 (void) fprintf(stderr, gettext("'%s': not a ZFS filesystem\n"),
711 path);
712 return (NULL);
713 }
714
715 return (zfs_open(hdl, entry.mnt_special, ZFS_TYPE_FILESYSTEM));
716 }
717
718 /*
719 * Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from
720 * an ioctl().
721 */
722 int
723 zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len)
724 {
725 if (len == 0)
726 len = 16 * 1024;
727 zc->zc_nvlist_dst_size = len;
728 if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
729 zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == NULL)
730 return (-1);
731
732 return (0);
733 }
734
735 /*
736 * Called when an ioctl() which returns an nvlist fails with ENOMEM. This will
737 * expand the nvlist to the size specified in 'zc_nvlist_dst_size', which was
738 * filled in by the kernel to indicate the actual required size.
739 */
740 int
741 zcmd_expand_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc)
742 {
743 free((void *)(uintptr_t)zc->zc_nvlist_dst);
744 if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
745 zfs_alloc(hdl, zc->zc_nvlist_dst_size))
746 == NULL)
747 return (-1);
748
749 return (0);
750 }
751
752 /*
753 * Called to free the src and dst nvlists stored in the command structure.
754 */
755 void
756 zcmd_free_nvlists(zfs_cmd_t *zc)
757 {
758 free((void *)(uintptr_t)zc->zc_nvlist_conf);
759 free((void *)(uintptr_t)zc->zc_nvlist_src);
760 free((void *)(uintptr_t)zc->zc_nvlist_dst);
761 }
762
763 static int
764 zcmd_write_nvlist_com(libzfs_handle_t *hdl, uint64_t *outnv, uint64_t *outlen,
765 nvlist_t *nvl)
766 {
767 char *packed;
768 size_t len;
769
770 verify(nvlist_size(nvl, &len, NV_ENCODE_NATIVE) == 0);
771
772 if ((packed = zfs_alloc(hdl, len)) == NULL)
773 return (-1);
774
775 verify(nvlist_pack(nvl, &packed, &len, NV_ENCODE_NATIVE, 0) == 0);
776
777 *outnv = (uint64_t)(uintptr_t)packed;
778 *outlen = len;
779
780 return (0);
781 }
782
783 int
784 zcmd_write_conf_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl)
785 {
786 return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_conf,
787 &zc->zc_nvlist_conf_size, nvl));
788 }
789
790 int
791 zcmd_write_src_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl)
792 {
793 return (zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_src,
794 &zc->zc_nvlist_src_size, nvl));
795 }
796
797 /*
798 * Unpacks an nvlist from the ZFS ioctl command structure.
799 */
800 int
801 zcmd_read_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t **nvlp)
802 {
803 if (nvlist_unpack((void *)(uintptr_t)zc->zc_nvlist_dst,
804 zc->zc_nvlist_dst_size, nvlp, 0) != 0)
805 return (no_memory(hdl));
806
807 return (0);
808 }
809
810 int
811 zfs_ioctl(libzfs_handle_t *hdl, int request, zfs_cmd_t *zc)
812 {
813 int error;
814
815 zc->zc_history = (uint64_t)(uintptr_t)hdl->libzfs_log_str;
816 error = ioctl(hdl->libzfs_fd, request, zc);
817 if (hdl->libzfs_log_str) {
818 free(hdl->libzfs_log_str);
819 hdl->libzfs_log_str = NULL;
820 }
821 zc->zc_history = 0;
822
823 return (error);
824 }
825
826 /*
827 * ================================================================
828 * API shared by zfs and zpool property management
829 * ================================================================
830 */
831
832 static void
833 zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
834 {
835 zprop_list_t *pl = cbp->cb_proplist;
836 int i;
837 char *title;
838 size_t len;
839
840 cbp->cb_first = B_FALSE;
841 if (cbp->cb_scripted)
842 return;
843
844 /*
845 * Start with the length of the column headers.
846 */
847 cbp->cb_colwidths[GET_COL_NAME] = strlen(dgettext(TEXT_DOMAIN, "NAME"));
848 cbp->cb_colwidths[GET_COL_PROPERTY] = strlen(dgettext(TEXT_DOMAIN,
849 "PROPERTY"));
850 cbp->cb_colwidths[GET_COL_VALUE] = strlen(dgettext(TEXT_DOMAIN,
851 "VALUE"));
852 cbp->cb_colwidths[GET_COL_RECVD] = strlen(dgettext(TEXT_DOMAIN,
853 "RECEIVED"));
854 cbp->cb_colwidths[GET_COL_SOURCE] = strlen(dgettext(TEXT_DOMAIN,
855 "SOURCE"));
856
857 /* first property is always NAME */
858 assert(cbp->cb_proplist->pl_prop ==
859 ((type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME : ZFS_PROP_NAME));
860
861 /*
862 * Go through and calculate the widths for each column. For the
863 * 'source' column, we kludge it up by taking the worst-case scenario of
864 * inheriting from the longest name. This is acceptable because in the
865 * majority of cases 'SOURCE' is the last column displayed, and we don't
866 * use the width anyway. Note that the 'VALUE' column can be oversized,
867 * if the name of the property is much longer than any values we find.
868 */
869 for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) {
870 /*
871 * 'PROPERTY' column
872 */
873 if (pl->pl_prop != ZPROP_INVAL) {
874 const char *propname = (type == ZFS_TYPE_POOL) ?
875 zpool_prop_to_name(pl->pl_prop) :
876 zfs_prop_to_name(pl->pl_prop);
877
878 len = strlen(propname);
879 if (len > cbp->cb_colwidths[GET_COL_PROPERTY])
880 cbp->cb_colwidths[GET_COL_PROPERTY] = len;
881 } else {
882 len = strlen(pl->pl_user_prop);
883 if (len > cbp->cb_colwidths[GET_COL_PROPERTY])
884 cbp->cb_colwidths[GET_COL_PROPERTY] = len;
885 }
886
887 /*
888 * 'VALUE' column. The first property is always the 'name'
889 * property that was tacked on either by /sbin/zfs's
890 * zfs_do_get() or when calling zprop_expand_list(), so we
891 * ignore its width. If the user specified the name property
892 * to display, then it will be later in the list in any case.
893 */
894 if (pl != cbp->cb_proplist &&
895 pl->pl_width > cbp->cb_colwidths[GET_COL_VALUE])
896 cbp->cb_colwidths[GET_COL_VALUE] = pl->pl_width;
897
898 /* 'RECEIVED' column. */
899 if (pl != cbp->cb_proplist &&
900 pl->pl_recvd_width > cbp->cb_colwidths[GET_COL_RECVD])
901 cbp->cb_colwidths[GET_COL_RECVD] = pl->pl_recvd_width;
902
903 /*
904 * 'NAME' and 'SOURCE' columns
905 */
906 if (pl->pl_prop == (type == ZFS_TYPE_POOL ? ZPOOL_PROP_NAME :
907 ZFS_PROP_NAME) &&
908 pl->pl_width > cbp->cb_colwidths[GET_COL_NAME]) {
909 cbp->cb_colwidths[GET_COL_NAME] = pl->pl_width;
910 cbp->cb_colwidths[GET_COL_SOURCE] = pl->pl_width +
911 strlen(dgettext(TEXT_DOMAIN, "inherited from"));
912 }
913 }
914
915 /*
916 * Now go through and print the headers.
917 */
918 for (i = 0; i < ZFS_GET_NCOLS; i++) {
919 switch (cbp->cb_columns[i]) {
920 case GET_COL_NAME:
921 title = dgettext(TEXT_DOMAIN, "NAME");
922 break;
923 case GET_COL_PROPERTY:
924 title = dgettext(TEXT_DOMAIN, "PROPERTY");
925 break;
926 case GET_COL_VALUE:
927 title = dgettext(TEXT_DOMAIN, "VALUE");
928 break;
929 case GET_COL_RECVD:
930 title = dgettext(TEXT_DOMAIN, "RECEIVED");
931 break;
932 case GET_COL_SOURCE:
933 title = dgettext(TEXT_DOMAIN, "SOURCE");
934 break;
935 default:
936 title = NULL;
937 }
938
939 if (title != NULL) {
940 if (i == (ZFS_GET_NCOLS - 1) ||
941 cbp->cb_columns[i + 1] == GET_COL_NONE)
942 (void) printf("%s", title);
943 else
944 (void) printf("%-*s ",
945 cbp->cb_colwidths[cbp->cb_columns[i]],
946 title);
947 }
948 }
949 (void) printf("\n");
950 }
951
952 /*
953 * Display a single line of output, according to the settings in the callback
954 * structure.
955 */
956 void
957 zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp,
958 const char *propname, const char *value, zprop_source_t sourcetype,
959 const char *source, const char *recvd_value)
960 {
961 int i;
962 const char *str;
963 char buf[128];
964
965 /*
966 * Ignore those source types that the user has chosen to ignore.
967 */
968 if ((sourcetype & cbp->cb_sources) == 0)
969 return;
970
971 if (cbp->cb_first)
972 zprop_print_headers(cbp, cbp->cb_type);
973
974 for (i = 0; i < ZFS_GET_NCOLS; i++) {
975 switch (cbp->cb_columns[i]) {
976 case GET_COL_NAME:
977 str = name;
978 break;
979
980 case GET_COL_PROPERTY:
981 str = propname;
982 break;
983
984 case GET_COL_VALUE:
985 str = value;
986 break;
987
988 case GET_COL_SOURCE:
989 switch (sourcetype) {
990 case ZPROP_SRC_NONE:
991 str = "-";
992 break;
993
994 case ZPROP_SRC_DEFAULT:
995 str = "default";
996 break;
997
998 case ZPROP_SRC_LOCAL:
999 str = "local";
1000 break;
1001
1002 case ZPROP_SRC_TEMPORARY:
1003 str = "temporary";
1004 break;
1005
1006 case ZPROP_SRC_INHERITED:
1007 (void) snprintf(buf, sizeof (buf),
1008 "inherited from %s", source);
1009 str = buf;
1010 break;
1011 case ZPROP_SRC_RECEIVED:
1012 str = "received";
1013 break;
1014 }
1015 break;
1016
1017 case GET_COL_RECVD:
1018 str = (recvd_value == NULL ? "-" : recvd_value);
1019 break;
1020
1021 default:
1022 continue;
1023 }
1024
1025 if (cbp->cb_columns[i + 1] == GET_COL_NONE)
1026 (void) printf("%s", str);
1027 else if (cbp->cb_scripted)
1028 (void) printf("%s\t", str);
1029 else
1030 (void) printf("%-*s ",
1031 cbp->cb_colwidths[cbp->cb_columns[i]],
1032 str);
1033 }
1034
1035 (void) printf("\n");
1036 }
1037
1038 /*
1039 * Given a numeric suffix, convert the value into a number of bits that the
1040 * resulting value must be shifted.
1041 */
1042 static int
1043 str2shift(libzfs_handle_t *hdl, const char *buf)
1044 {
1045 const char *ends = "BKMGTPEZ";
1046 int i;
1047
1048 if (buf[0] == '\0')
1049 return (0);
1050 for (i = 0; i < strlen(ends); i++) {
1051 if (toupper(buf[0]) == ends[i])
1052 break;
1053 }
1054 if (i == strlen(ends)) {
1055 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1056 "invalid numeric suffix '%s'"), buf);
1057 return (-1);
1058 }
1059
1060 /*
1061 * We want to allow trailing 'b' characters for 'GB' or 'Mb'. But don't
1062 * allow 'BB' - that's just weird.
1063 */
1064 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0' &&
1065 toupper(buf[0]) != 'B'))
1066 return (10*i);
1067
1068 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1069 "invalid numeric suffix '%s'"), buf);
1070 return (-1);
1071 }
1072
1073 /*
1074 * Convert a string of the form '100G' into a real number. Used when setting
1075 * properties or creating a volume. 'buf' is used to place an extended error
1076 * message for the caller to use.
1077 */
1078 int
1079 zfs_nicestrtonum(libzfs_handle_t *hdl, const char *value, uint64_t *num)
1080 {
1081 char *end;
1082 int shift;
1083
1084 *num = 0;
1085
1086 /* Check to see if this looks like a number. */
1087 if ((value[0] < '0' || value[0] > '9') && value[0] != '.') {
1088 if (hdl)
1089 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1090 "bad numeric value '%s'"), value);
1091 return (-1);
1092 }
1093
1094 /* Rely on strtoull() to process the numeric portion. */
1095 errno = 0;
1096 *num = strtoull(value, &end, 10);
1097
1098 /*
1099 * Check for ERANGE, which indicates that the value is too large to fit
1100 * in a 64-bit value.
1101 */
1102 if (errno == ERANGE) {
1103 if (hdl)
1104 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1105 "numeric value is too large"));
1106 return (-1);
1107 }
1108
1109 /*
1110 * If we have a decimal value, then do the computation with floating
1111 * point arithmetic. Otherwise, use standard arithmetic.
1112 */
1113 if (*end == '.') {
1114 double fval = strtod(value, &end);
1115
1116 if ((shift = str2shift(hdl, end)) == -1)
1117 return (-1);
1118
1119 fval *= pow(2, shift);
1120
1121 if (fval > UINT64_MAX) {
1122 if (hdl)
1123 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1124 "numeric value is too large"));
1125 return (-1);
1126 }
1127
1128 *num = (uint64_t)fval;
1129 } else {
1130 if ((shift = str2shift(hdl, end)) == -1)
1131 return (-1);
1132
1133 /* Check for overflow */
1134 if (shift >= 64 || (*num << shift) >> shift != *num) {
1135 if (hdl)
1136 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1137 "numeric value is too large"));
1138 return (-1);
1139 }
1140
1141 *num <<= shift;
1142 }
1143
1144 return (0);
1145 }
1146
1147 /*
1148 * Given a propname=value nvpair to set, parse any numeric properties
1149 * (index, boolean, etc) if they are specified as strings and add the
1150 * resulting nvpair to the returned nvlist.
1151 *
1152 * At the DSL layer, all properties are either 64-bit numbers or strings.
1153 * We want the user to be able to ignore this fact and specify properties
1154 * as native values (numbers, for example) or as strings (to simplify
1155 * command line utilities). This also handles converting index types
1156 * (compression, checksum, etc) from strings to their on-disk index.
1157 */
1158 int
1159 zprop_parse_value(libzfs_handle_t *hdl, nvpair_t *elem, int prop,
1160 zfs_type_t type, nvlist_t *ret, char **svalp, uint64_t *ivalp,
1161 const char *errbuf)
1162 {
1163 data_type_t datatype = nvpair_type(elem);
1164 zprop_type_t proptype;
1165 const char *propname;
1166 char *value;
1167 boolean_t isnone = B_FALSE;
1168
1169 if (type == ZFS_TYPE_POOL) {
1170 proptype = zpool_prop_get_type(prop);
1171 propname = zpool_prop_to_name(prop);
1172 } else {
1173 proptype = zfs_prop_get_type(prop);
1174 propname = zfs_prop_to_name(prop);
1175 }
1176
1177 /*
1178 * Convert any properties to the internal DSL value types.
1179 */
1180 *svalp = NULL;
1181 *ivalp = 0;
1182
1183 switch (proptype) {
1184 case PROP_TYPE_STRING:
1185 if (datatype != DATA_TYPE_STRING) {
1186 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1187 "'%s' must be a string"), nvpair_name(elem));
1188 goto error;
1189 }
1190 (void) nvpair_value_string(elem, svalp);
1191 if (strlen(*svalp) >= ZFS_MAXPROPLEN) {
1192 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1193 "'%s' is too long"), nvpair_name(elem));
1194 goto error;
1195 }
1196 break;
1197
1198 case PROP_TYPE_NUMBER:
1199 if (datatype == DATA_TYPE_STRING) {
1200 (void) nvpair_value_string(elem, &value);
1201 if (strcmp(value, "none") == 0) {
1202 isnone = B_TRUE;
1203 } else if (zfs_nicestrtonum(hdl, value, ivalp)
1204 != 0) {
1205 goto error;
1206 }
1207 } else if (datatype == DATA_TYPE_UINT64) {
1208 (void) nvpair_value_uint64(elem, ivalp);
1209 } else {
1210 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1211 "'%s' must be a number"), nvpair_name(elem));
1212 goto error;
1213 }
1214
1215 /*
1216 * Quota special: force 'none' and don't allow 0.
1217 */
1218 if ((type & ZFS_TYPE_DATASET) && *ivalp == 0 && !isnone &&
1219 (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_REFQUOTA)) {
1220 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1221 "use 'none' to disable quota/refquota"));
1222 goto error;
1223 }
1224 break;
1225
1226 case PROP_TYPE_INDEX:
1227 if (datatype != DATA_TYPE_STRING) {
1228 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1229 "'%s' must be a string"), nvpair_name(elem));
1230 goto error;
1231 }
1232
1233 (void) nvpair_value_string(elem, &value);
1234
1235 if (zprop_string_to_index(prop, value, ivalp, type) != 0) {
1236 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1237 "'%s' must be one of '%s'"), propname,
1238 zprop_values(prop, type));
1239 goto error;
1240 }
1241 break;
1242
1243 default:
1244 abort();
1245 }
1246
1247 /*
1248 * Add the result to our return set of properties.
1249 */
1250 if (*svalp != NULL) {
1251 if (nvlist_add_string(ret, propname, *svalp) != 0) {
1252 (void) no_memory(hdl);
1253 return (-1);
1254 }
1255 } else {
1256 if (nvlist_add_uint64(ret, propname, *ivalp) != 0) {
1257 (void) no_memory(hdl);
1258 return (-1);
1259 }
1260 }
1261
1262 return (0);
1263 error:
1264 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1265 return (-1);
1266 }
1267
1268 static int
1269 addlist(libzfs_handle_t *hdl, char *propname, zprop_list_t **listp,
1270 zfs_type_t type)
1271 {
1272 int prop;
1273 zprop_list_t *entry;
1274
1275 prop = zprop_name_to_prop(propname, type);
1276
1277 if (prop != ZPROP_INVAL && !zprop_valid_for_type(prop, type))
1278 prop = ZPROP_INVAL;
1279
1280 /*
1281 * When no property table entry can be found, return failure if
1282 * this is a pool property or if this isn't a user-defined
1283 * dataset property,
1284 */
1285 if (prop == ZPROP_INVAL && (type == ZFS_TYPE_POOL ||
1286 (!zfs_prop_user(propname) && !zfs_prop_userquota(propname) &&
1287 !zfs_prop_written(propname)))) {
1288 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1289 "invalid property '%s'"), propname);
1290 return (zfs_error(hdl, EZFS_BADPROP,
1291 dgettext(TEXT_DOMAIN, "bad property list")));
1292 }
1293
1294 if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL)
1295 return (-1);
1296
1297 entry->pl_prop = prop;
1298 if (prop == ZPROP_INVAL) {
1299 if ((entry->pl_user_prop = zfs_strdup(hdl, propname)) == NULL) {
1300 free(entry);
1301 return (-1);
1302 }
1303 entry->pl_width = strlen(propname);
1304 } else {
1305 entry->pl_width = zprop_width(prop, &entry->pl_fixed,
1306 type);
1307 }
1308
1309 *listp = entry;
1310
1311 return (0);
1312 }
1313
1314 /*
1315 * Given a comma-separated list of properties, construct a property list
1316 * containing both user-defined and native properties. This function will
1317 * return a NULL list if 'all' is specified, which can later be expanded
1318 * by zprop_expand_list().
1319 */
1320 int
1321 zprop_get_list(libzfs_handle_t *hdl, char *props, zprop_list_t **listp,
1322 zfs_type_t type)
1323 {
1324 *listp = NULL;
1325
1326 /*
1327 * If 'all' is specified, return a NULL list.
1328 */
1329 if (strcmp(props, "all") == 0)
1330 return (0);
1331
1332 /*
1333 * If no props were specified, return an error.
1334 */
1335 if (props[0] == '\0') {
1336 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1337 "no properties specified"));
1338 return (zfs_error(hdl, EZFS_BADPROP, dgettext(TEXT_DOMAIN,
1339 "bad property list")));
1340 }
1341
1342 /*
1343 * It would be nice to use getsubopt() here, but the inclusion of column
1344 * aliases makes this more effort than it's worth.
1345 */
1346 while (*props != '\0') {
1347 size_t len;
1348 char *p;
1349 char c;
1350
1351 if ((p = strchr(props, ',')) == NULL) {
1352 len = strlen(props);
1353 p = props + len;
1354 } else {
1355 len = p - props;
1356 }
1357
1358 /*
1359 * Check for empty options.
1360 */
1361 if (len == 0) {
1362 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1363 "empty property name"));
1364 return (zfs_error(hdl, EZFS_BADPROP,
1365 dgettext(TEXT_DOMAIN, "bad property list")));
1366 }
1367
1368 /*
1369 * Check all regular property names.
1370 */
1371 c = props[len];
1372 props[len] = '\0';
1373
1374 if (strcmp(props, "space") == 0) {
1375 static char *spaceprops[] = {
1376 "name", "avail", "used", "usedbysnapshots",
1377 "usedbydataset", "usedbyrefreservation",
1378 "usedbychildren", NULL
1379 };
1380 int i;
1381
1382 for (i = 0; spaceprops[i]; i++) {
1383 if (addlist(hdl, spaceprops[i], listp, type))
1384 return (-1);
1385 listp = &(*listp)->pl_next;
1386 }
1387 } else {
1388 if (addlist(hdl, props, listp, type))
1389 return (-1);
1390 listp = &(*listp)->pl_next;
1391 }
1392
1393 props = p;
1394 if (c == ',')
1395 props++;
1396 }
1397
1398 return (0);
1399 }
1400
1401 void
1402 zprop_free_list(zprop_list_t *pl)
1403 {
1404 zprop_list_t *next;
1405
1406 while (pl != NULL) {
1407 next = pl->pl_next;
1408 free(pl->pl_user_prop);
1409 free(pl);
1410 pl = next;
1411 }
1412 }
1413
1414 typedef struct expand_data {
1415 zprop_list_t **last;
1416 libzfs_handle_t *hdl;
1417 zfs_type_t type;
1418 } expand_data_t;
1419
1420 int
1421 zprop_expand_list_cb(int prop, void *cb)
1422 {
1423 zprop_list_t *entry;
1424 expand_data_t *edp = cb;
1425
1426 if ((entry = zfs_alloc(edp->hdl, sizeof (zprop_list_t))) == NULL)
1427 return (ZPROP_INVAL);
1428
1429 entry->pl_prop = prop;
1430 entry->pl_width = zprop_width(prop, &entry->pl_fixed, edp->type);
1431 entry->pl_all = B_TRUE;
1432
1433 *(edp->last) = entry;
1434 edp->last = &entry->pl_next;
1435
1436 return (ZPROP_CONT);
1437 }
1438
1439 int
1440 zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp, zfs_type_t type)
1441 {
1442 zprop_list_t *entry;
1443 zprop_list_t **last;
1444 expand_data_t exp;
1445
1446 if (*plp == NULL) {
1447 /*
1448 * If this is the very first time we've been called for an 'all'
1449 * specification, expand the list to include all native
1450 * properties.
1451 */
1452 last = plp;
1453
1454 exp.last = last;
1455 exp.hdl = hdl;
1456 exp.type = type;
1457
1458 if (zprop_iter_common(zprop_expand_list_cb, &exp, B_FALSE,
1459 B_FALSE, type) == ZPROP_INVAL)
1460 return (-1);
1461
1462 /*
1463 * Add 'name' to the beginning of the list, which is handled
1464 * specially.
1465 */
1466 if ((entry = zfs_alloc(hdl, sizeof (zprop_list_t))) == NULL)
1467 return (-1);
1468
1469 entry->pl_prop = (type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME :
1470 ZFS_PROP_NAME;
1471 entry->pl_width = zprop_width(entry->pl_prop,
1472 &entry->pl_fixed, type);
1473 entry->pl_all = B_TRUE;
1474 entry->pl_next = *plp;
1475 *plp = entry;
1476 }
1477 return (0);
1478 }
1479
1480 int
1481 zprop_iter(zprop_func func, void *cb, boolean_t show_all, boolean_t ordered,
1482 zfs_type_t type)
1483 {
1484 return (zprop_iter_common(func, cb, show_all, ordered, type));
1485 }