Print this page
2882 implement libzfs_core
2883 changing "canmount" property to "on" should not always remount dataset
2900 "zfs snapshot" should be able to create multiple, arbitrary snapshots at once
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Chris Siden <christopher.siden@delphix.com>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Reviewed by: Bill Pijewski <wdp@joyent.com>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>
| Split |
Close |
| Expand all |
| Collapse all |
--- old/usr/src/lib/libzfs/common/libzfs_dataset.c
+++ new/usr/src/lib/libzfs/common/libzfs_dataset.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
25 25 * Copyright (c) 2012 by Delphix. All rights reserved.
26 26 * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved.
27 27 */
28 28
29 29 #include <ctype.h>
30 30 #include <errno.h>
31 31 #include <libintl.h>
32 32 #include <math.h>
33 33 #include <stdio.h>
34 34 #include <stdlib.h>
35 35 #include <strings.h>
36 36 #include <unistd.h>
37 37 #include <stddef.h>
38 38 #include <zone.h>
39 39 #include <fcntl.h>
40 40 #include <sys/mntent.h>
41 41 #include <sys/mount.h>
42 42 #include <priv.h>
43 43 #include <pwd.h>
44 44 #include <grp.h>
45 45 #include <stddef.h>
46 46 #include <ucred.h>
47 47 #include <idmap.h>
48 48 #include <aclutils.h>
49 49 #include <directory.h>
50 50
51 51 #include <sys/dnode.h>
52 52 #include <sys/spa.h>
53 53 #include <sys/zap.h>
54 54 #include <libzfs.h>
55 55
56 56 #include "zfs_namecheck.h"
57 57 #include "zfs_prop.h"
58 58 #include "libzfs_impl.h"
59 59 #include "zfs_deleg.h"
60 60
61 61 static int userquota_propname_decode(const char *propname, boolean_t zoned,
62 62 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp);
63 63
64 64 /*
65 65 * Given a single type (not a mask of types), return the type in a human
66 66 * readable form.
67 67 */
68 68 const char *
69 69 zfs_type_to_name(zfs_type_t type)
70 70 {
71 71 switch (type) {
72 72 case ZFS_TYPE_FILESYSTEM:
73 73 return (dgettext(TEXT_DOMAIN, "filesystem"));
74 74 case ZFS_TYPE_SNAPSHOT:
75 75 return (dgettext(TEXT_DOMAIN, "snapshot"));
76 76 case ZFS_TYPE_VOLUME:
77 77 return (dgettext(TEXT_DOMAIN, "volume"));
78 78 }
79 79
80 80 return (NULL);
81 81 }
82 82
83 83 /*
84 84 * Given a path and mask of ZFS types, return a string describing this dataset.
85 85 * This is used when we fail to open a dataset and we cannot get an exact type.
86 86 * We guess what the type would have been based on the path and the mask of
87 87 * acceptable types.
88 88 */
89 89 static const char *
90 90 path_to_str(const char *path, int types)
91 91 {
92 92 /*
93 93 * When given a single type, always report the exact type.
94 94 */
95 95 if (types == ZFS_TYPE_SNAPSHOT)
96 96 return (dgettext(TEXT_DOMAIN, "snapshot"));
97 97 if (types == ZFS_TYPE_FILESYSTEM)
98 98 return (dgettext(TEXT_DOMAIN, "filesystem"));
99 99 if (types == ZFS_TYPE_VOLUME)
100 100 return (dgettext(TEXT_DOMAIN, "volume"));
101 101
102 102 /*
103 103 * The user is requesting more than one type of dataset. If this is the
104 104 * case, consult the path itself. If we're looking for a snapshot, and
105 105 * a '@' is found, then report it as "snapshot". Otherwise, remove the
106 106 * snapshot attribute and try again.
107 107 */
108 108 if (types & ZFS_TYPE_SNAPSHOT) {
109 109 if (strchr(path, '@') != NULL)
110 110 return (dgettext(TEXT_DOMAIN, "snapshot"));
111 111 return (path_to_str(path, types & ~ZFS_TYPE_SNAPSHOT));
112 112 }
113 113
114 114 /*
115 115 * The user has requested either filesystems or volumes.
116 116 * We have no way of knowing a priori what type this would be, so always
117 117 * report it as "filesystem" or "volume", our two primitive types.
118 118 */
119 119 if (types & ZFS_TYPE_FILESYSTEM)
120 120 return (dgettext(TEXT_DOMAIN, "filesystem"));
121 121
122 122 assert(types & ZFS_TYPE_VOLUME);
123 123 return (dgettext(TEXT_DOMAIN, "volume"));
124 124 }
125 125
126 126 /*
127 127 * Validate a ZFS path. This is used even before trying to open the dataset, to
128 128 * provide a more meaningful error message. We call zfs_error_aux() to
129 129 * explain exactly why the name was not valid.
130 130 */
131 131 int
132 132 zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
133 133 boolean_t modifying)
134 134 {
135 135 namecheck_err_t why;
136 136 char what;
137 137
138 138 (void) zfs_prop_get_table();
139 139 if (dataset_namecheck(path, &why, &what) != 0) {
140 140 if (hdl != NULL) {
141 141 switch (why) {
142 142 case NAME_ERR_TOOLONG:
143 143 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
144 144 "name is too long"));
145 145 break;
146 146
147 147 case NAME_ERR_LEADING_SLASH:
148 148 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
149 149 "leading slash in name"));
150 150 break;
151 151
152 152 case NAME_ERR_EMPTY_COMPONENT:
153 153 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
154 154 "empty component in name"));
155 155 break;
156 156
157 157 case NAME_ERR_TRAILING_SLASH:
158 158 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
159 159 "trailing slash in name"));
160 160 break;
161 161
162 162 case NAME_ERR_INVALCHAR:
163 163 zfs_error_aux(hdl,
164 164 dgettext(TEXT_DOMAIN, "invalid character "
165 165 "'%c' in name"), what);
166 166 break;
167 167
168 168 case NAME_ERR_MULTIPLE_AT:
169 169 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
170 170 "multiple '@' delimiters in name"));
171 171 break;
172 172
173 173 case NAME_ERR_NOLETTER:
174 174 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
175 175 "pool doesn't begin with a letter"));
176 176 break;
177 177
178 178 case NAME_ERR_RESERVED:
179 179 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
180 180 "name is reserved"));
181 181 break;
182 182
183 183 case NAME_ERR_DISKLIKE:
184 184 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
185 185 "reserved disk name"));
186 186 break;
187 187 }
188 188 }
189 189
190 190 return (0);
191 191 }
192 192
193 193 if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) {
194 194 if (hdl != NULL)
195 195 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
196 196 "snapshot delimiter '@' in filesystem name"));
197 197 return (0);
198 198 }
199 199
200 200 if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) {
201 201 if (hdl != NULL)
202 202 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
203 203 "missing '@' delimiter in snapshot name"));
204 204 return (0);
205 205 }
206 206
207 207 if (modifying && strchr(path, '%') != NULL) {
208 208 if (hdl != NULL)
209 209 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
210 210 "invalid character %c in name"), '%');
211 211 return (0);
212 212 }
213 213
214 214 return (-1);
215 215 }
216 216
217 217 int
218 218 zfs_name_valid(const char *name, zfs_type_t type)
219 219 {
220 220 if (type == ZFS_TYPE_POOL)
221 221 return (zpool_name_valid(NULL, B_FALSE, name));
222 222 return (zfs_validate_name(NULL, name, type, B_FALSE));
223 223 }
224 224
225 225 /*
226 226 * This function takes the raw DSL properties, and filters out the user-defined
227 227 * properties into a separate nvlist.
228 228 */
229 229 static nvlist_t *
230 230 process_user_props(zfs_handle_t *zhp, nvlist_t *props)
231 231 {
232 232 libzfs_handle_t *hdl = zhp->zfs_hdl;
233 233 nvpair_t *elem;
234 234 nvlist_t *propval;
235 235 nvlist_t *nvl;
236 236
237 237 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) {
238 238 (void) no_memory(hdl);
239 239 return (NULL);
240 240 }
241 241
242 242 elem = NULL;
243 243 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
244 244 if (!zfs_prop_user(nvpair_name(elem)))
245 245 continue;
246 246
247 247 verify(nvpair_value_nvlist(elem, &propval) == 0);
248 248 if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) {
249 249 nvlist_free(nvl);
250 250 (void) no_memory(hdl);
251 251 return (NULL);
252 252 }
253 253 }
254 254
255 255 return (nvl);
256 256 }
257 257
258 258 static zpool_handle_t *
259 259 zpool_add_handle(zfs_handle_t *zhp, const char *pool_name)
260 260 {
261 261 libzfs_handle_t *hdl = zhp->zfs_hdl;
262 262 zpool_handle_t *zph;
263 263
264 264 if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) {
265 265 if (hdl->libzfs_pool_handles != NULL)
266 266 zph->zpool_next = hdl->libzfs_pool_handles;
267 267 hdl->libzfs_pool_handles = zph;
268 268 }
269 269 return (zph);
270 270 }
271 271
272 272 static zpool_handle_t *
273 273 zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len)
274 274 {
275 275 libzfs_handle_t *hdl = zhp->zfs_hdl;
276 276 zpool_handle_t *zph = hdl->libzfs_pool_handles;
277 277
278 278 while ((zph != NULL) &&
279 279 (strncmp(pool_name, zpool_get_name(zph), len) != 0))
280 280 zph = zph->zpool_next;
281 281 return (zph);
282 282 }
283 283
284 284 /*
285 285 * Returns a handle to the pool that contains the provided dataset.
286 286 * If a handle to that pool already exists then that handle is returned.
287 287 * Otherwise, a new handle is created and added to the list of handles.
288 288 */
289 289 static zpool_handle_t *
290 290 zpool_handle(zfs_handle_t *zhp)
291 291 {
292 292 char *pool_name;
293 293 int len;
294 294 zpool_handle_t *zph;
295 295
296 296 len = strcspn(zhp->zfs_name, "/@") + 1;
297 297 pool_name = zfs_alloc(zhp->zfs_hdl, len);
298 298 (void) strlcpy(pool_name, zhp->zfs_name, len);
299 299
300 300 zph = zpool_find_handle(zhp, pool_name, len);
301 301 if (zph == NULL)
302 302 zph = zpool_add_handle(zhp, pool_name);
303 303
304 304 free(pool_name);
305 305 return (zph);
306 306 }
307 307
308 308 void
309 309 zpool_free_handles(libzfs_handle_t *hdl)
310 310 {
311 311 zpool_handle_t *next, *zph = hdl->libzfs_pool_handles;
312 312
313 313 while (zph != NULL) {
314 314 next = zph->zpool_next;
315 315 zpool_close(zph);
316 316 zph = next;
317 317 }
318 318 hdl->libzfs_pool_handles = NULL;
319 319 }
320 320
321 321 /*
322 322 * Utility function to gather stats (objset and zpl) for the given object.
323 323 */
324 324 static int
325 325 get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc)
326 326 {
327 327 libzfs_handle_t *hdl = zhp->zfs_hdl;
328 328
329 329 (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name));
330 330
331 331 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) {
332 332 if (errno == ENOMEM) {
333 333 if (zcmd_expand_dst_nvlist(hdl, zc) != 0) {
334 334 return (-1);
335 335 }
336 336 } else {
337 337 return (-1);
338 338 }
339 339 }
340 340 return (0);
341 341 }
342 342
343 343 /*
344 344 * Utility function to get the received properties of the given object.
345 345 */
346 346 static int
347 347 get_recvd_props_ioctl(zfs_handle_t *zhp)
348 348 {
349 349 libzfs_handle_t *hdl = zhp->zfs_hdl;
350 350 nvlist_t *recvdprops;
351 351 zfs_cmd_t zc = { 0 };
352 352 int err;
353 353
354 354 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
355 355 return (-1);
356 356
357 357 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
358 358
359 359 while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) {
360 360 if (errno == ENOMEM) {
361 361 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
362 362 return (-1);
363 363 }
364 364 } else {
365 365 zcmd_free_nvlists(&zc);
366 366 return (-1);
367 367 }
368 368 }
369 369
370 370 err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops);
371 371 zcmd_free_nvlists(&zc);
372 372 if (err != 0)
373 373 return (-1);
374 374
375 375 nvlist_free(zhp->zfs_recvd_props);
376 376 zhp->zfs_recvd_props = recvdprops;
377 377
378 378 return (0);
379 379 }
380 380
381 381 static int
382 382 put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc)
383 383 {
384 384 nvlist_t *allprops, *userprops;
385 385
386 386 zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */
387 387
388 388 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) {
389 389 return (-1);
390 390 }
391 391
392 392 /*
393 393 * XXX Why do we store the user props separately, in addition to
394 394 * storing them in zfs_props?
395 395 */
396 396 if ((userprops = process_user_props(zhp, allprops)) == NULL) {
397 397 nvlist_free(allprops);
398 398 return (-1);
399 399 }
400 400
401 401 nvlist_free(zhp->zfs_props);
402 402 nvlist_free(zhp->zfs_user_props);
403 403
404 404 zhp->zfs_props = allprops;
405 405 zhp->zfs_user_props = userprops;
406 406
407 407 return (0);
408 408 }
409 409
410 410 static int
411 411 get_stats(zfs_handle_t *zhp)
412 412 {
413 413 int rc = 0;
414 414 zfs_cmd_t zc = { 0 };
415 415
416 416 if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0)
417 417 return (-1);
418 418 if (get_stats_ioctl(zhp, &zc) != 0)
419 419 rc = -1;
420 420 else if (put_stats_zhdl(zhp, &zc) != 0)
421 421 rc = -1;
422 422 zcmd_free_nvlists(&zc);
423 423 return (rc);
424 424 }
425 425
426 426 /*
427 427 * Refresh the properties currently stored in the handle.
428 428 */
429 429 void
430 430 zfs_refresh_properties(zfs_handle_t *zhp)
431 431 {
432 432 (void) get_stats(zhp);
433 433 }
434 434
435 435 /*
436 436 * Makes a handle from the given dataset name. Used by zfs_open() and
437 437 * zfs_iter_* to create child handles on the fly.
438 438 */
439 439 static int
440 440 make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc)
441 441 {
442 442 if (put_stats_zhdl(zhp, zc) != 0)
443 443 return (-1);
444 444
445 445 /*
446 446 * We've managed to open the dataset and gather statistics. Determine
447 447 * the high-level type.
448 448 */
449 449 if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL)
450 450 zhp->zfs_head_type = ZFS_TYPE_VOLUME;
451 451 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS)
452 452 zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM;
453 453 else
454 454 abort();
455 455
456 456 if (zhp->zfs_dmustats.dds_is_snapshot)
457 457 zhp->zfs_type = ZFS_TYPE_SNAPSHOT;
458 458 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL)
459 459 zhp->zfs_type = ZFS_TYPE_VOLUME;
460 460 else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS)
461 461 zhp->zfs_type = ZFS_TYPE_FILESYSTEM;
462 462 else
463 463 abort(); /* we should never see any other types */
464 464
465 465 if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL)
466 466 return (-1);
467 467
468 468 return (0);
469 469 }
470 470
471 471 zfs_handle_t *
472 472 make_dataset_handle(libzfs_handle_t *hdl, const char *path)
473 473 {
474 474 zfs_cmd_t zc = { 0 };
475 475
476 476 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
477 477
478 478 if (zhp == NULL)
479 479 return (NULL);
480 480
481 481 zhp->zfs_hdl = hdl;
482 482 (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name));
483 483 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) {
484 484 free(zhp);
485 485 return (NULL);
486 486 }
487 487 if (get_stats_ioctl(zhp, &zc) == -1) {
488 488 zcmd_free_nvlists(&zc);
489 489 free(zhp);
490 490 return (NULL);
491 491 }
492 492 if (make_dataset_handle_common(zhp, &zc) == -1) {
493 493 free(zhp);
494 494 zhp = NULL;
495 495 }
496 496 zcmd_free_nvlists(&zc);
497 497 return (zhp);
498 498 }
499 499
500 500 zfs_handle_t *
501 501 make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc)
502 502 {
503 503 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
504 504
505 505 if (zhp == NULL)
506 506 return (NULL);
507 507
508 508 zhp->zfs_hdl = hdl;
509 509 (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name));
510 510 if (make_dataset_handle_common(zhp, zc) == -1) {
511 511 free(zhp);
512 512 return (NULL);
513 513 }
514 514 return (zhp);
515 515 }
516 516
517 517 zfs_handle_t *
518 518 zfs_handle_dup(zfs_handle_t *zhp_orig)
519 519 {
520 520 zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
521 521
522 522 if (zhp == NULL)
523 523 return (NULL);
524 524
525 525 zhp->zfs_hdl = zhp_orig->zfs_hdl;
526 526 zhp->zpool_hdl = zhp_orig->zpool_hdl;
527 527 (void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name,
528 528 sizeof (zhp->zfs_name));
529 529 zhp->zfs_type = zhp_orig->zfs_type;
530 530 zhp->zfs_head_type = zhp_orig->zfs_head_type;
531 531 zhp->zfs_dmustats = zhp_orig->zfs_dmustats;
532 532 if (zhp_orig->zfs_props != NULL) {
533 533 if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) {
534 534 (void) no_memory(zhp->zfs_hdl);
535 535 zfs_close(zhp);
536 536 return (NULL);
537 537 }
538 538 }
539 539 if (zhp_orig->zfs_user_props != NULL) {
540 540 if (nvlist_dup(zhp_orig->zfs_user_props,
541 541 &zhp->zfs_user_props, 0) != 0) {
542 542 (void) no_memory(zhp->zfs_hdl);
543 543 zfs_close(zhp);
544 544 return (NULL);
545 545 }
546 546 }
547 547 if (zhp_orig->zfs_recvd_props != NULL) {
548 548 if (nvlist_dup(zhp_orig->zfs_recvd_props,
549 549 &zhp->zfs_recvd_props, 0)) {
550 550 (void) no_memory(zhp->zfs_hdl);
551 551 zfs_close(zhp);
552 552 return (NULL);
553 553 }
554 554 }
555 555 zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck;
556 556 if (zhp_orig->zfs_mntopts != NULL) {
557 557 zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl,
558 558 zhp_orig->zfs_mntopts);
559 559 }
560 560 zhp->zfs_props_table = zhp_orig->zfs_props_table;
561 561 return (zhp);
562 562 }
563 563
564 564 /*
565 565 * Opens the given snapshot, filesystem, or volume. The 'types'
566 566 * argument is a mask of acceptable types. The function will print an
567 567 * appropriate error message and return NULL if it can't be opened.
568 568 */
569 569 zfs_handle_t *
570 570 zfs_open(libzfs_handle_t *hdl, const char *path, int types)
571 571 {
572 572 zfs_handle_t *zhp;
573 573 char errbuf[1024];
574 574
575 575 (void) snprintf(errbuf, sizeof (errbuf),
576 576 dgettext(TEXT_DOMAIN, "cannot open '%s'"), path);
577 577
578 578 /*
579 579 * Validate the name before we even try to open it.
580 580 */
581 581 if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) {
582 582 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
583 583 "invalid dataset name"));
584 584 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
585 585 return (NULL);
586 586 }
587 587
588 588 /*
589 589 * Try to get stats for the dataset, which will tell us if it exists.
590 590 */
591 591 errno = 0;
592 592 if ((zhp = make_dataset_handle(hdl, path)) == NULL) {
593 593 (void) zfs_standard_error(hdl, errno, errbuf);
594 594 return (NULL);
595 595 }
596 596
597 597 if (!(types & zhp->zfs_type)) {
598 598 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
599 599 zfs_close(zhp);
600 600 return (NULL);
601 601 }
602 602
603 603 return (zhp);
604 604 }
605 605
606 606 /*
607 607 * Release a ZFS handle. Nothing to do but free the associated memory.
608 608 */
609 609 void
610 610 zfs_close(zfs_handle_t *zhp)
611 611 {
612 612 if (zhp->zfs_mntopts)
613 613 free(zhp->zfs_mntopts);
614 614 nvlist_free(zhp->zfs_props);
615 615 nvlist_free(zhp->zfs_user_props);
616 616 nvlist_free(zhp->zfs_recvd_props);
617 617 free(zhp);
618 618 }
619 619
620 620 typedef struct mnttab_node {
621 621 struct mnttab mtn_mt;
622 622 avl_node_t mtn_node;
623 623 } mnttab_node_t;
624 624
625 625 static int
626 626 libzfs_mnttab_cache_compare(const void *arg1, const void *arg2)
627 627 {
628 628 const mnttab_node_t *mtn1 = arg1;
629 629 const mnttab_node_t *mtn2 = arg2;
630 630 int rv;
631 631
632 632 rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special);
633 633
634 634 if (rv == 0)
635 635 return (0);
636 636 return (rv > 0 ? 1 : -1);
637 637 }
638 638
639 639 void
640 640 libzfs_mnttab_init(libzfs_handle_t *hdl)
641 641 {
642 642 assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0);
643 643 avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare,
644 644 sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node));
645 645 }
646 646
647 647 void
648 648 libzfs_mnttab_update(libzfs_handle_t *hdl)
649 649 {
650 650 struct mnttab entry;
651 651
652 652 rewind(hdl->libzfs_mnttab);
653 653 while (getmntent(hdl->libzfs_mnttab, &entry) == 0) {
654 654 mnttab_node_t *mtn;
655 655
656 656 if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
657 657 continue;
658 658 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t));
659 659 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special);
660 660 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp);
661 661 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype);
662 662 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts);
663 663 avl_add(&hdl->libzfs_mnttab_cache, mtn);
664 664 }
665 665 }
666 666
667 667 void
668 668 libzfs_mnttab_fini(libzfs_handle_t *hdl)
669 669 {
670 670 void *cookie = NULL;
671 671 mnttab_node_t *mtn;
672 672
673 673 while (mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) {
674 674 free(mtn->mtn_mt.mnt_special);
675 675 free(mtn->mtn_mt.mnt_mountp);
676 676 free(mtn->mtn_mt.mnt_fstype);
677 677 free(mtn->mtn_mt.mnt_mntopts);
678 678 free(mtn);
679 679 }
680 680 avl_destroy(&hdl->libzfs_mnttab_cache);
681 681 }
682 682
683 683 void
684 684 libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable)
685 685 {
686 686 hdl->libzfs_mnttab_enable = enable;
687 687 }
688 688
689 689 int
690 690 libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname,
691 691 struct mnttab *entry)
692 692 {
693 693 mnttab_node_t find;
694 694 mnttab_node_t *mtn;
695 695
696 696 if (!hdl->libzfs_mnttab_enable) {
697 697 struct mnttab srch = { 0 };
698 698
699 699 if (avl_numnodes(&hdl->libzfs_mnttab_cache))
700 700 libzfs_mnttab_fini(hdl);
701 701 rewind(hdl->libzfs_mnttab);
702 702 srch.mnt_special = (char *)fsname;
703 703 srch.mnt_fstype = MNTTYPE_ZFS;
704 704 if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0)
705 705 return (0);
706 706 else
707 707 return (ENOENT);
708 708 }
709 709
710 710 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0)
711 711 libzfs_mnttab_update(hdl);
712 712
713 713 find.mtn_mt.mnt_special = (char *)fsname;
714 714 mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL);
715 715 if (mtn) {
716 716 *entry = mtn->mtn_mt;
717 717 return (0);
718 718 }
719 719 return (ENOENT);
720 720 }
721 721
722 722 void
723 723 libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special,
724 724 const char *mountp, const char *mntopts)
725 725 {
726 726 mnttab_node_t *mtn;
727 727
728 728 if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0)
729 729 return;
730 730 mtn = zfs_alloc(hdl, sizeof (mnttab_node_t));
731 731 mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special);
732 732 mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp);
733 733 mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS);
734 734 mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts);
735 735 avl_add(&hdl->libzfs_mnttab_cache, mtn);
736 736 }
737 737
738 738 void
739 739 libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname)
740 740 {
741 741 mnttab_node_t find;
742 742 mnttab_node_t *ret;
743 743
744 744 find.mtn_mt.mnt_special = (char *)fsname;
745 745 if (ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) {
746 746 avl_remove(&hdl->libzfs_mnttab_cache, ret);
747 747 free(ret->mtn_mt.mnt_special);
748 748 free(ret->mtn_mt.mnt_mountp);
749 749 free(ret->mtn_mt.mnt_fstype);
750 750 free(ret->mtn_mt.mnt_mntopts);
751 751 free(ret);
752 752 }
753 753 }
754 754
755 755 int
756 756 zfs_spa_version(zfs_handle_t *zhp, int *spa_version)
757 757 {
758 758 zpool_handle_t *zpool_handle = zhp->zpool_hdl;
759 759
760 760 if (zpool_handle == NULL)
761 761 return (-1);
762 762
763 763 *spa_version = zpool_get_prop_int(zpool_handle,
764 764 ZPOOL_PROP_VERSION, NULL);
765 765 return (0);
766 766 }
767 767
768 768 /*
769 769 * The choice of reservation property depends on the SPA version.
770 770 */
771 771 static int
772 772 zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop)
773 773 {
774 774 int spa_version;
775 775
776 776 if (zfs_spa_version(zhp, &spa_version) < 0)
777 777 return (-1);
778 778
779 779 if (spa_version >= SPA_VERSION_REFRESERVATION)
780 780 *resv_prop = ZFS_PROP_REFRESERVATION;
781 781 else
782 782 *resv_prop = ZFS_PROP_RESERVATION;
783 783
784 784 return (0);
785 785 }
786 786
787 787 /*
788 788 * Given an nvlist of properties to set, validates that they are correct, and
789 789 * parses any numeric properties (index, boolean, etc) if they are specified as
790 790 * strings.
791 791 */
792 792 nvlist_t *
793 793 zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
794 794 uint64_t zoned, zfs_handle_t *zhp, const char *errbuf)
795 795 {
796 796 nvpair_t *elem;
797 797 uint64_t intval;
798 798 char *strval;
799 799 zfs_prop_t prop;
800 800 nvlist_t *ret;
801 801 int chosen_normal = -1;
802 802 int chosen_utf = -1;
803 803
804 804 if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) {
805 805 (void) no_memory(hdl);
806 806 return (NULL);
807 807 }
808 808
809 809 /*
810 810 * Make sure this property is valid and applies to this type.
811 811 */
812 812
813 813 elem = NULL;
814 814 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
815 815 const char *propname = nvpair_name(elem);
816 816
817 817 prop = zfs_name_to_prop(propname);
818 818 if (prop == ZPROP_INVAL && zfs_prop_user(propname)) {
819 819 /*
820 820 * This is a user property: make sure it's a
821 821 * string, and that it's less than ZAP_MAXNAMELEN.
822 822 */
823 823 if (nvpair_type(elem) != DATA_TYPE_STRING) {
824 824 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
825 825 "'%s' must be a string"), propname);
826 826 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
827 827 goto error;
828 828 }
829 829
830 830 if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) {
831 831 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
832 832 "property name '%s' is too long"),
833 833 propname);
834 834 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
835 835 goto error;
836 836 }
837 837
838 838 (void) nvpair_value_string(elem, &strval);
839 839 if (nvlist_add_string(ret, propname, strval) != 0) {
840 840 (void) no_memory(hdl);
841 841 goto error;
842 842 }
843 843 continue;
844 844 }
845 845
846 846 /*
847 847 * Currently, only user properties can be modified on
848 848 * snapshots.
849 849 */
850 850 if (type == ZFS_TYPE_SNAPSHOT) {
851 851 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
852 852 "this property can not be modified for snapshots"));
853 853 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf);
854 854 goto error;
855 855 }
856 856
857 857 if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) {
858 858 zfs_userquota_prop_t uqtype;
859 859 char newpropname[128];
860 860 char domain[128];
861 861 uint64_t rid;
862 862 uint64_t valary[3];
863 863
864 864 if (userquota_propname_decode(propname, zoned,
865 865 &uqtype, domain, sizeof (domain), &rid) != 0) {
866 866 zfs_error_aux(hdl,
867 867 dgettext(TEXT_DOMAIN,
868 868 "'%s' has an invalid user/group name"),
869 869 propname);
870 870 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
871 871 goto error;
872 872 }
873 873
874 874 if (uqtype != ZFS_PROP_USERQUOTA &&
875 875 uqtype != ZFS_PROP_GROUPQUOTA) {
876 876 zfs_error_aux(hdl,
877 877 dgettext(TEXT_DOMAIN, "'%s' is readonly"),
878 878 propname);
879 879 (void) zfs_error(hdl, EZFS_PROPREADONLY,
880 880 errbuf);
881 881 goto error;
882 882 }
883 883
884 884 if (nvpair_type(elem) == DATA_TYPE_STRING) {
885 885 (void) nvpair_value_string(elem, &strval);
886 886 if (strcmp(strval, "none") == 0) {
887 887 intval = 0;
888 888 } else if (zfs_nicestrtonum(hdl,
889 889 strval, &intval) != 0) {
890 890 (void) zfs_error(hdl,
891 891 EZFS_BADPROP, errbuf);
892 892 goto error;
893 893 }
894 894 } else if (nvpair_type(elem) ==
895 895 DATA_TYPE_UINT64) {
896 896 (void) nvpair_value_uint64(elem, &intval);
897 897 if (intval == 0) {
898 898 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
899 899 "use 'none' to disable "
900 900 "userquota/groupquota"));
901 901 goto error;
902 902 }
903 903 } else {
904 904 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
905 905 "'%s' must be a number"), propname);
906 906 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
907 907 goto error;
908 908 }
909 909
910 910 /*
911 911 * Encode the prop name as
912 912 * userquota@<hex-rid>-domain, to make it easy
913 913 * for the kernel to decode.
914 914 */
915 915 (void) snprintf(newpropname, sizeof (newpropname),
916 916 "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype],
917 917 (longlong_t)rid, domain);
918 918 valary[0] = uqtype;
919 919 valary[1] = rid;
920 920 valary[2] = intval;
921 921 if (nvlist_add_uint64_array(ret, newpropname,
922 922 valary, 3) != 0) {
923 923 (void) no_memory(hdl);
924 924 goto error;
925 925 }
926 926 continue;
927 927 } else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) {
928 928 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
929 929 "'%s' is readonly"),
930 930 propname);
931 931 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf);
932 932 goto error;
933 933 }
934 934
935 935 if (prop == ZPROP_INVAL) {
936 936 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
937 937 "invalid property '%s'"), propname);
938 938 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
939 939 goto error;
940 940 }
941 941
942 942 if (!zfs_prop_valid_for_type(prop, type)) {
943 943 zfs_error_aux(hdl,
944 944 dgettext(TEXT_DOMAIN, "'%s' does not "
945 945 "apply to datasets of this type"), propname);
946 946 (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf);
947 947 goto error;
948 948 }
949 949
950 950 if (zfs_prop_readonly(prop) &&
951 951 (!zfs_prop_setonce(prop) || zhp != NULL)) {
952 952 zfs_error_aux(hdl,
953 953 dgettext(TEXT_DOMAIN, "'%s' is readonly"),
954 954 propname);
955 955 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf);
956 956 goto error;
957 957 }
958 958
959 959 if (zprop_parse_value(hdl, elem, prop, type, ret,
960 960 &strval, &intval, errbuf) != 0)
961 961 goto error;
962 962
963 963 /*
964 964 * Perform some additional checks for specific properties.
965 965 */
966 966 switch (prop) {
967 967 case ZFS_PROP_VERSION:
968 968 {
969 969 int version;
970 970
971 971 if (zhp == NULL)
972 972 break;
973 973 version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
974 974 if (intval < version) {
975 975 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
976 976 "Can not downgrade; already at version %u"),
977 977 version);
978 978 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
979 979 goto error;
980 980 }
981 981 break;
982 982 }
983 983
984 984 case ZFS_PROP_RECORDSIZE:
985 985 case ZFS_PROP_VOLBLOCKSIZE:
986 986 /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */
987 987 if (intval < SPA_MINBLOCKSIZE ||
988 988 intval > SPA_MAXBLOCKSIZE || !ISP2(intval)) {
989 989 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
990 990 "'%s' must be power of 2 from %u "
991 991 "to %uk"), propname,
992 992 (uint_t)SPA_MINBLOCKSIZE,
993 993 (uint_t)SPA_MAXBLOCKSIZE >> 10);
994 994 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
995 995 goto error;
996 996 }
997 997 break;
998 998
999 999 case ZFS_PROP_MLSLABEL:
1000 1000 {
1001 1001 /*
1002 1002 * Verify the mlslabel string and convert to
1003 1003 * internal hex label string.
1004 1004 */
1005 1005
1006 1006 m_label_t *new_sl;
1007 1007 char *hex = NULL; /* internal label string */
1008 1008
1009 1009 /* Default value is already OK. */
1010 1010 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
1011 1011 break;
1012 1012
1013 1013 /* Verify the label can be converted to binary form */
1014 1014 if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) ||
1015 1015 (str_to_label(strval, &new_sl, MAC_LABEL,
1016 1016 L_NO_CORRECTION, NULL) == -1)) {
1017 1017 goto badlabel;
1018 1018 }
1019 1019
1020 1020 /* Now translate to hex internal label string */
1021 1021 if (label_to_str(new_sl, &hex, M_INTERNAL,
1022 1022 DEF_NAMES) != 0) {
1023 1023 if (hex)
1024 1024 free(hex);
1025 1025 goto badlabel;
1026 1026 }
1027 1027 m_label_free(new_sl);
1028 1028
1029 1029 /* If string is already in internal form, we're done. */
1030 1030 if (strcmp(strval, hex) == 0) {
1031 1031 free(hex);
1032 1032 break;
1033 1033 }
1034 1034
1035 1035 /* Replace the label string with the internal form. */
1036 1036 (void) nvlist_remove(ret, zfs_prop_to_name(prop),
1037 1037 DATA_TYPE_STRING);
1038 1038 verify(nvlist_add_string(ret, zfs_prop_to_name(prop),
1039 1039 hex) == 0);
1040 1040 free(hex);
1041 1041
1042 1042 break;
1043 1043
1044 1044 badlabel:
1045 1045 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1046 1046 "invalid mlslabel '%s'"), strval);
1047 1047 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1048 1048 m_label_free(new_sl); /* OK if null */
1049 1049 goto error;
1050 1050
1051 1051 }
1052 1052
1053 1053 case ZFS_PROP_MOUNTPOINT:
1054 1054 {
1055 1055 namecheck_err_t why;
1056 1056
1057 1057 if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 ||
1058 1058 strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0)
1059 1059 break;
1060 1060
1061 1061 if (mountpoint_namecheck(strval, &why)) {
1062 1062 switch (why) {
1063 1063 case NAME_ERR_LEADING_SLASH:
1064 1064 zfs_error_aux(hdl,
1065 1065 dgettext(TEXT_DOMAIN,
1066 1066 "'%s' must be an absolute path, "
1067 1067 "'none', or 'legacy'"), propname);
1068 1068 break;
1069 1069 case NAME_ERR_TOOLONG:
1070 1070 zfs_error_aux(hdl,
1071 1071 dgettext(TEXT_DOMAIN,
1072 1072 "component of '%s' is too long"),
1073 1073 propname);
1074 1074 break;
1075 1075 }
1076 1076 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1077 1077 goto error;
1078 1078 }
1079 1079 }
1080 1080
1081 1081 /*FALLTHRU*/
1082 1082
1083 1083 case ZFS_PROP_SHARESMB:
1084 1084 case ZFS_PROP_SHARENFS:
1085 1085 /*
1086 1086 * For the mountpoint and sharenfs or sharesmb
1087 1087 * properties, check if it can be set in a
1088 1088 * global/non-global zone based on
1089 1089 * the zoned property value:
1090 1090 *
1091 1091 * global zone non-global zone
1092 1092 * --------------------------------------------------
1093 1093 * zoned=on mountpoint (no) mountpoint (yes)
1094 1094 * sharenfs (no) sharenfs (no)
1095 1095 * sharesmb (no) sharesmb (no)
1096 1096 *
1097 1097 * zoned=off mountpoint (yes) N/A
1098 1098 * sharenfs (yes)
1099 1099 * sharesmb (yes)
1100 1100 */
1101 1101 if (zoned) {
1102 1102 if (getzoneid() == GLOBAL_ZONEID) {
1103 1103 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1104 1104 "'%s' cannot be set on "
1105 1105 "dataset in a non-global zone"),
1106 1106 propname);
1107 1107 (void) zfs_error(hdl, EZFS_ZONED,
1108 1108 errbuf);
1109 1109 goto error;
1110 1110 } else if (prop == ZFS_PROP_SHARENFS ||
1111 1111 prop == ZFS_PROP_SHARESMB) {
1112 1112 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1113 1113 "'%s' cannot be set in "
1114 1114 "a non-global zone"), propname);
1115 1115 (void) zfs_error(hdl, EZFS_ZONED,
1116 1116 errbuf);
1117 1117 goto error;
1118 1118 }
1119 1119 } else if (getzoneid() != GLOBAL_ZONEID) {
1120 1120 /*
1121 1121 * If zoned property is 'off', this must be in
1122 1122 * a global zone. If not, something is wrong.
1123 1123 */
1124 1124 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1125 1125 "'%s' cannot be set while dataset "
1126 1126 "'zoned' property is set"), propname);
1127 1127 (void) zfs_error(hdl, EZFS_ZONED, errbuf);
1128 1128 goto error;
1129 1129 }
1130 1130
1131 1131 /*
1132 1132 * At this point, it is legitimate to set the
1133 1133 * property. Now we want to make sure that the
1134 1134 * property value is valid if it is sharenfs.
1135 1135 */
1136 1136 if ((prop == ZFS_PROP_SHARENFS ||
1137 1137 prop == ZFS_PROP_SHARESMB) &&
1138 1138 strcmp(strval, "on") != 0 &&
1139 1139 strcmp(strval, "off") != 0) {
1140 1140 zfs_share_proto_t proto;
1141 1141
1142 1142 if (prop == ZFS_PROP_SHARESMB)
1143 1143 proto = PROTO_SMB;
1144 1144 else
1145 1145 proto = PROTO_NFS;
1146 1146
1147 1147 /*
1148 1148 * Must be an valid sharing protocol
1149 1149 * option string so init the libshare
1150 1150 * in order to enable the parser and
1151 1151 * then parse the options. We use the
1152 1152 * control API since we don't care about
1153 1153 * the current configuration and don't
1154 1154 * want the overhead of loading it
1155 1155 * until we actually do something.
1156 1156 */
1157 1157
1158 1158 if (zfs_init_libshare(hdl,
1159 1159 SA_INIT_CONTROL_API) != SA_OK) {
1160 1160 /*
1161 1161 * An error occurred so we can't do
1162 1162 * anything
1163 1163 */
1164 1164 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1165 1165 "'%s' cannot be set: problem "
1166 1166 "in share initialization"),
1167 1167 propname);
1168 1168 (void) zfs_error(hdl, EZFS_BADPROP,
1169 1169 errbuf);
1170 1170 goto error;
1171 1171 }
1172 1172
1173 1173 if (zfs_parse_options(strval, proto) != SA_OK) {
1174 1174 /*
1175 1175 * There was an error in parsing so
1176 1176 * deal with it by issuing an error
1177 1177 * message and leaving after
1178 1178 * uninitializing the the libshare
1179 1179 * interface.
1180 1180 */
1181 1181 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1182 1182 "'%s' cannot be set to invalid "
1183 1183 "options"), propname);
1184 1184 (void) zfs_error(hdl, EZFS_BADPROP,
1185 1185 errbuf);
1186 1186 zfs_uninit_libshare(hdl);
1187 1187 goto error;
1188 1188 }
1189 1189 zfs_uninit_libshare(hdl);
1190 1190 }
1191 1191
1192 1192 break;
1193 1193 case ZFS_PROP_UTF8ONLY:
1194 1194 chosen_utf = (int)intval;
1195 1195 break;
1196 1196 case ZFS_PROP_NORMALIZE:
1197 1197 chosen_normal = (int)intval;
1198 1198 break;
1199 1199 }
1200 1200
1201 1201 /*
1202 1202 * For changes to existing volumes, we have some additional
1203 1203 * checks to enforce.
1204 1204 */
1205 1205 if (type == ZFS_TYPE_VOLUME && zhp != NULL) {
1206 1206 uint64_t volsize = zfs_prop_get_int(zhp,
1207 1207 ZFS_PROP_VOLSIZE);
1208 1208 uint64_t blocksize = zfs_prop_get_int(zhp,
1209 1209 ZFS_PROP_VOLBLOCKSIZE);
1210 1210 char buf[64];
1211 1211
1212 1212 switch (prop) {
1213 1213 case ZFS_PROP_RESERVATION:
1214 1214 case ZFS_PROP_REFRESERVATION:
1215 1215 if (intval > volsize) {
1216 1216 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1217 1217 "'%s' is greater than current "
1218 1218 "volume size"), propname);
1219 1219 (void) zfs_error(hdl, EZFS_BADPROP,
1220 1220 errbuf);
1221 1221 goto error;
1222 1222 }
1223 1223 break;
1224 1224
1225 1225 case ZFS_PROP_VOLSIZE:
1226 1226 if (intval % blocksize != 0) {
1227 1227 zfs_nicenum(blocksize, buf,
1228 1228 sizeof (buf));
1229 1229 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1230 1230 "'%s' must be a multiple of "
1231 1231 "volume block size (%s)"),
1232 1232 propname, buf);
1233 1233 (void) zfs_error(hdl, EZFS_BADPROP,
1234 1234 errbuf);
1235 1235 goto error;
1236 1236 }
1237 1237
1238 1238 if (intval == 0) {
1239 1239 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1240 1240 "'%s' cannot be zero"),
1241 1241 propname);
1242 1242 (void) zfs_error(hdl, EZFS_BADPROP,
1243 1243 errbuf);
1244 1244 goto error;
1245 1245 }
1246 1246 break;
1247 1247 }
1248 1248 }
1249 1249 }
1250 1250
1251 1251 /*
1252 1252 * If normalization was chosen, but no UTF8 choice was made,
1253 1253 * enforce rejection of non-UTF8 names.
1254 1254 *
1255 1255 * If normalization was chosen, but rejecting non-UTF8 names
1256 1256 * was explicitly not chosen, it is an error.
1257 1257 */
1258 1258 if (chosen_normal > 0 && chosen_utf < 0) {
1259 1259 if (nvlist_add_uint64(ret,
1260 1260 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) {
1261 1261 (void) no_memory(hdl);
1262 1262 goto error;
1263 1263 }
1264 1264 } else if (chosen_normal > 0 && chosen_utf == 0) {
1265 1265 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1266 1266 "'%s' must be set 'on' if normalization chosen"),
1267 1267 zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
1268 1268 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1269 1269 goto error;
1270 1270 }
1271 1271 return (ret);
1272 1272
1273 1273 error:
1274 1274 nvlist_free(ret);
1275 1275 return (NULL);
1276 1276 }
1277 1277
1278 1278 int
1279 1279 zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl)
1280 1280 {
1281 1281 uint64_t old_volsize;
1282 1282 uint64_t new_volsize;
1283 1283 uint64_t old_reservation;
1284 1284 uint64_t new_reservation;
1285 1285 zfs_prop_t resv_prop;
1286 1286
1287 1287 /*
1288 1288 * If this is an existing volume, and someone is setting the volsize,
1289 1289 * make sure that it matches the reservation, or add it if necessary.
1290 1290 */
1291 1291 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
1292 1292 if (zfs_which_resv_prop(zhp, &resv_prop) < 0)
1293 1293 return (-1);
1294 1294 old_reservation = zfs_prop_get_int(zhp, resv_prop);
1295 1295 if ((zvol_volsize_to_reservation(old_volsize, zhp->zfs_props) !=
1296 1296 old_reservation) || nvlist_lookup_uint64(nvl,
1297 1297 zfs_prop_to_name(resv_prop), &new_reservation) != ENOENT) {
1298 1298 return (0);
1299 1299 }
1300 1300 if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE),
1301 1301 &new_volsize) != 0)
1302 1302 return (-1);
1303 1303 new_reservation = zvol_volsize_to_reservation(new_volsize,
1304 1304 zhp->zfs_props);
1305 1305 if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop),
1306 1306 new_reservation) != 0) {
1307 1307 (void) no_memory(zhp->zfs_hdl);
1308 1308 return (-1);
1309 1309 }
1310 1310 return (1);
1311 1311 }
1312 1312
1313 1313 void
1314 1314 zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err,
1315 1315 char *errbuf)
1316 1316 {
1317 1317 switch (err) {
1318 1318
1319 1319 case ENOSPC:
1320 1320 /*
1321 1321 * For quotas and reservations, ENOSPC indicates
1322 1322 * something different; setting a quota or reservation
1323 1323 * doesn't use any disk space.
1324 1324 */
1325 1325 switch (prop) {
1326 1326 case ZFS_PROP_QUOTA:
1327 1327 case ZFS_PROP_REFQUOTA:
1328 1328 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1329 1329 "size is less than current used or "
1330 1330 "reserved space"));
1331 1331 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
1332 1332 break;
1333 1333
1334 1334 case ZFS_PROP_RESERVATION:
1335 1335 case ZFS_PROP_REFRESERVATION:
1336 1336 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1337 1337 "size is greater than available space"));
1338 1338 (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
1339 1339 break;
1340 1340
1341 1341 default:
1342 1342 (void) zfs_standard_error(hdl, err, errbuf);
1343 1343 break;
1344 1344 }
1345 1345 break;
1346 1346
1347 1347 case EBUSY:
1348 1348 (void) zfs_standard_error(hdl, EBUSY, errbuf);
1349 1349 break;
1350 1350
1351 1351 case EROFS:
1352 1352 (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf);
1353 1353 break;
1354 1354
1355 1355 case ENOTSUP:
1356 1356 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1357 1357 "pool and or dataset must be upgraded to set this "
1358 1358 "property or value"));
1359 1359 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
1360 1360 break;
1361 1361
1362 1362 case ERANGE:
1363 1363 if (prop == ZFS_PROP_COMPRESSION) {
1364 1364 (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1365 1365 "property setting is not allowed on "
1366 1366 "bootable datasets"));
1367 1367 (void) zfs_error(hdl, EZFS_NOTSUP, errbuf);
1368 1368 } else {
1369 1369 (void) zfs_standard_error(hdl, err, errbuf);
1370 1370 }
1371 1371 break;
1372 1372
1373 1373 case EINVAL:
1374 1374 if (prop == ZPROP_INVAL) {
1375 1375 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1376 1376 } else {
1377 1377 (void) zfs_standard_error(hdl, err, errbuf);
1378 1378 }
1379 1379 break;
1380 1380
1381 1381 case EOVERFLOW:
1382 1382 /*
1383 1383 * This platform can't address a volume this big.
1384 1384 */
1385 1385 #ifdef _ILP32
1386 1386 if (prop == ZFS_PROP_VOLSIZE) {
1387 1387 (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf);
1388 1388 break;
1389 1389 }
1390 1390 #endif
1391 1391 /* FALLTHROUGH */
1392 1392 default:
1393 1393 (void) zfs_standard_error(hdl, err, errbuf);
1394 1394 }
1395 1395 }
1396 1396
1397 1397 /*
1398 1398 * Given a property name and value, set the property for the given dataset.
1399 1399 */
|
↓ open down ↓ |
1399 lines elided |
↑ open up ↑ |
1400 1400 int
1401 1401 zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval)
1402 1402 {
1403 1403 zfs_cmd_t zc = { 0 };
1404 1404 int ret = -1;
1405 1405 prop_changelist_t *cl = NULL;
1406 1406 char errbuf[1024];
1407 1407 libzfs_handle_t *hdl = zhp->zfs_hdl;
1408 1408 nvlist_t *nvl = NULL, *realprops;
1409 1409 zfs_prop_t prop;
1410 - boolean_t do_prefix;
1411 - uint64_t idx;
1410 + boolean_t do_prefix = B_TRUE;
1412 1411 int added_resv;
1413 1412
1414 1413 (void) snprintf(errbuf, sizeof (errbuf),
1415 1414 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
1416 1415 zhp->zfs_name);
1417 1416
1418 1417 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 ||
1419 1418 nvlist_add_string(nvl, propname, propval) != 0) {
1420 1419 (void) no_memory(hdl);
1421 1420 goto error;
1422 1421 }
1423 1422
1424 1423 if ((realprops = zfs_valid_proplist(hdl, zhp->zfs_type, nvl,
1425 1424 zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL)
1426 1425 goto error;
1427 1426
1428 1427 nvlist_free(nvl);
1429 1428 nvl = realprops;
1430 1429
1431 1430 prop = zfs_name_to_prop(propname);
1432 1431
1433 1432 if (prop == ZFS_PROP_VOLSIZE) {
1434 1433 if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1)
1435 1434 goto error;
1436 1435 }
1437 1436
1438 1437 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL)
1439 1438 goto error;
|
↓ open down ↓ |
18 lines elided |
↑ open up ↑ |
1440 1439
1441 1440 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) {
1442 1441 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1443 1442 "child dataset with inherited mountpoint is used "
1444 1443 "in a non-global zone"));
1445 1444 ret = zfs_error(hdl, EZFS_ZONED, errbuf);
1446 1445 goto error;
1447 1446 }
1448 1447
1449 1448 /*
1450 - * If the dataset's canmount property is being set to noauto,
1451 - * then we want to prevent unmounting & remounting it.
1452 - */
1453 - do_prefix = !((prop == ZFS_PROP_CANMOUNT) &&
1454 - (zprop_string_to_index(prop, propval, &idx,
1455 - ZFS_TYPE_DATASET) == 0) && (idx == ZFS_CANMOUNT_NOAUTO));
1449 + * We don't want to unmount & remount the dataset when changing
1450 + * its canmount property to 'on' or 'noauto'. We only use
1451 + * the changelist logic to unmount when setting canmount=off.
1452 + */
1453 + if (prop == ZFS_PROP_CANMOUNT) {
1454 + uint64_t idx;
1455 + int err = zprop_string_to_index(prop, propval, &idx,
1456 + ZFS_TYPE_DATASET);
1457 + if (err == 0 && idx != ZFS_CANMOUNT_OFF)
1458 + do_prefix = B_FALSE;
1459 + }
1456 1460
1457 1461 if (do_prefix && (ret = changelist_prefix(cl)) != 0)
1458 1462 goto error;
1459 1463
1460 1464 /*
1461 1465 * Execute the corresponding ioctl() to set this property.
1462 1466 */
1463 1467 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1464 1468
1465 1469 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0)
1466 1470 goto error;
1467 1471
1468 1472 ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc);
1469 1473
1470 1474 if (ret != 0) {
1471 1475 zfs_setprop_error(hdl, prop, errno, errbuf);
1472 1476 if (added_resv && errno == ENOSPC) {
1473 1477 /* clean up the volsize property we tried to set */
1474 1478 uint64_t old_volsize = zfs_prop_get_int(zhp,
1475 1479 ZFS_PROP_VOLSIZE);
1476 1480 nvlist_free(nvl);
1477 1481 zcmd_free_nvlists(&zc);
1478 1482 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
1479 1483 goto error;
1480 1484 if (nvlist_add_uint64(nvl,
1481 1485 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
1482 1486 old_volsize) != 0)
1483 1487 goto error;
1484 1488 if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0)
1485 1489 goto error;
1486 1490 (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc);
1487 1491 }
1488 1492 } else {
1489 1493 if (do_prefix)
1490 1494 ret = changelist_postfix(cl);
1491 1495
1492 1496 /*
1493 1497 * Refresh the statistics so the new property value
1494 1498 * is reflected.
1495 1499 */
1496 1500 if (ret == 0)
1497 1501 (void) get_stats(zhp);
1498 1502 }
1499 1503
1500 1504 error:
1501 1505 nvlist_free(nvl);
1502 1506 zcmd_free_nvlists(&zc);
1503 1507 if (cl)
1504 1508 changelist_free(cl);
1505 1509 return (ret);
1506 1510 }
1507 1511
1508 1512 /*
1509 1513 * Given a property, inherit the value from the parent dataset, or if received
1510 1514 * is TRUE, revert to the received value, if any.
1511 1515 */
1512 1516 int
1513 1517 zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received)
1514 1518 {
1515 1519 zfs_cmd_t zc = { 0 };
1516 1520 int ret;
1517 1521 prop_changelist_t *cl;
1518 1522 libzfs_handle_t *hdl = zhp->zfs_hdl;
1519 1523 char errbuf[1024];
1520 1524 zfs_prop_t prop;
1521 1525
1522 1526 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
1523 1527 "cannot inherit %s for '%s'"), propname, zhp->zfs_name);
1524 1528
1525 1529 zc.zc_cookie = received;
1526 1530 if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) {
1527 1531 /*
1528 1532 * For user properties, the amount of work we have to do is very
1529 1533 * small, so just do it here.
1530 1534 */
1531 1535 if (!zfs_prop_user(propname)) {
1532 1536 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1533 1537 "invalid property"));
1534 1538 return (zfs_error(hdl, EZFS_BADPROP, errbuf));
1535 1539 }
1536 1540
1537 1541 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1538 1542 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value));
1539 1543
1540 1544 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0)
1541 1545 return (zfs_standard_error(hdl, errno, errbuf));
1542 1546
1543 1547 return (0);
1544 1548 }
1545 1549
1546 1550 /*
1547 1551 * Verify that this property is inheritable.
1548 1552 */
1549 1553 if (zfs_prop_readonly(prop))
1550 1554 return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf));
1551 1555
1552 1556 if (!zfs_prop_inheritable(prop) && !received)
1553 1557 return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf));
1554 1558
1555 1559 /*
1556 1560 * Check to see if the value applies to this type
1557 1561 */
1558 1562 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type))
1559 1563 return (zfs_error(hdl, EZFS_PROPTYPE, errbuf));
1560 1564
1561 1565 /*
1562 1566 * Normalize the name, to get rid of shorthand abbreviations.
1563 1567 */
1564 1568 propname = zfs_prop_to_name(prop);
1565 1569 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1566 1570 (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value));
1567 1571
1568 1572 if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID &&
1569 1573 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) {
1570 1574 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1571 1575 "dataset is used in a non-global zone"));
1572 1576 return (zfs_error(hdl, EZFS_ZONED, errbuf));
1573 1577 }
1574 1578
1575 1579 /*
1576 1580 * Determine datasets which will be affected by this change, if any.
1577 1581 */
1578 1582 if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL)
1579 1583 return (-1);
1580 1584
1581 1585 if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) {
1582 1586 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1583 1587 "child dataset with inherited mountpoint is used "
1584 1588 "in a non-global zone"));
1585 1589 ret = zfs_error(hdl, EZFS_ZONED, errbuf);
1586 1590 goto error;
1587 1591 }
1588 1592
1589 1593 if ((ret = changelist_prefix(cl)) != 0)
1590 1594 goto error;
1591 1595
1592 1596 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) {
1593 1597 return (zfs_standard_error(hdl, errno, errbuf));
1594 1598 } else {
1595 1599
1596 1600 if ((ret = changelist_postfix(cl)) != 0)
1597 1601 goto error;
1598 1602
1599 1603 /*
1600 1604 * Refresh the statistics so the new property is reflected.
1601 1605 */
1602 1606 (void) get_stats(zhp);
1603 1607 }
1604 1608
1605 1609 error:
1606 1610 changelist_free(cl);
1607 1611 return (ret);
1608 1612 }
1609 1613
1610 1614 /*
1611 1615 * True DSL properties are stored in an nvlist. The following two functions
1612 1616 * extract them appropriately.
1613 1617 */
1614 1618 static uint64_t
1615 1619 getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source)
1616 1620 {
1617 1621 nvlist_t *nv;
1618 1622 uint64_t value;
1619 1623
1620 1624 *source = NULL;
1621 1625 if (nvlist_lookup_nvlist(zhp->zfs_props,
1622 1626 zfs_prop_to_name(prop), &nv) == 0) {
1623 1627 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0);
1624 1628 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source);
1625 1629 } else {
1626 1630 verify(!zhp->zfs_props_table ||
1627 1631 zhp->zfs_props_table[prop] == B_TRUE);
1628 1632 value = zfs_prop_default_numeric(prop);
1629 1633 *source = "";
1630 1634 }
1631 1635
1632 1636 return (value);
1633 1637 }
1634 1638
1635 1639 static char *
1636 1640 getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source)
1637 1641 {
1638 1642 nvlist_t *nv;
1639 1643 char *value;
1640 1644
1641 1645 *source = NULL;
1642 1646 if (nvlist_lookup_nvlist(zhp->zfs_props,
1643 1647 zfs_prop_to_name(prop), &nv) == 0) {
1644 1648 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0);
1645 1649 (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source);
1646 1650 } else {
1647 1651 verify(!zhp->zfs_props_table ||
1648 1652 zhp->zfs_props_table[prop] == B_TRUE);
1649 1653 if ((value = (char *)zfs_prop_default_string(prop)) == NULL)
1650 1654 value = "";
1651 1655 *source = "";
1652 1656 }
1653 1657
1654 1658 return (value);
1655 1659 }
1656 1660
1657 1661 static boolean_t
1658 1662 zfs_is_recvd_props_mode(zfs_handle_t *zhp)
1659 1663 {
1660 1664 return (zhp->zfs_props == zhp->zfs_recvd_props);
1661 1665 }
1662 1666
1663 1667 static void
1664 1668 zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie)
1665 1669 {
1666 1670 *cookie = (uint64_t)(uintptr_t)zhp->zfs_props;
1667 1671 zhp->zfs_props = zhp->zfs_recvd_props;
1668 1672 }
1669 1673
1670 1674 static void
1671 1675 zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie)
1672 1676 {
1673 1677 zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie;
1674 1678 *cookie = 0;
1675 1679 }
1676 1680
1677 1681 /*
1678 1682 * Internal function for getting a numeric property. Both zfs_prop_get() and
1679 1683 * zfs_prop_get_int() are built using this interface.
1680 1684 *
1681 1685 * Certain properties can be overridden using 'mount -o'. In this case, scan
1682 1686 * the contents of the /etc/mnttab entry, searching for the appropriate options.
1683 1687 * If they differ from the on-disk values, report the current values and mark
1684 1688 * the source "temporary".
1685 1689 */
1686 1690 static int
1687 1691 get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src,
1688 1692 char **source, uint64_t *val)
1689 1693 {
1690 1694 zfs_cmd_t zc = { 0 };
1691 1695 nvlist_t *zplprops = NULL;
1692 1696 struct mnttab mnt;
1693 1697 char *mntopt_on = NULL;
1694 1698 char *mntopt_off = NULL;
1695 1699 boolean_t received = zfs_is_recvd_props_mode(zhp);
1696 1700
1697 1701 *source = NULL;
1698 1702
1699 1703 switch (prop) {
1700 1704 case ZFS_PROP_ATIME:
1701 1705 mntopt_on = MNTOPT_ATIME;
1702 1706 mntopt_off = MNTOPT_NOATIME;
1703 1707 break;
1704 1708
1705 1709 case ZFS_PROP_DEVICES:
1706 1710 mntopt_on = MNTOPT_DEVICES;
1707 1711 mntopt_off = MNTOPT_NODEVICES;
1708 1712 break;
1709 1713
1710 1714 case ZFS_PROP_EXEC:
1711 1715 mntopt_on = MNTOPT_EXEC;
1712 1716 mntopt_off = MNTOPT_NOEXEC;
1713 1717 break;
1714 1718
1715 1719 case ZFS_PROP_READONLY:
1716 1720 mntopt_on = MNTOPT_RO;
1717 1721 mntopt_off = MNTOPT_RW;
1718 1722 break;
1719 1723
1720 1724 case ZFS_PROP_SETUID:
1721 1725 mntopt_on = MNTOPT_SETUID;
1722 1726 mntopt_off = MNTOPT_NOSETUID;
1723 1727 break;
1724 1728
1725 1729 case ZFS_PROP_XATTR:
1726 1730 mntopt_on = MNTOPT_XATTR;
1727 1731 mntopt_off = MNTOPT_NOXATTR;
1728 1732 break;
1729 1733
1730 1734 case ZFS_PROP_NBMAND:
1731 1735 mntopt_on = MNTOPT_NBMAND;
1732 1736 mntopt_off = MNTOPT_NONBMAND;
1733 1737 break;
1734 1738 }
1735 1739
1736 1740 /*
1737 1741 * Because looking up the mount options is potentially expensive
1738 1742 * (iterating over all of /etc/mnttab), we defer its calculation until
1739 1743 * we're looking up a property which requires its presence.
1740 1744 */
1741 1745 if (!zhp->zfs_mntcheck &&
1742 1746 (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) {
1743 1747 libzfs_handle_t *hdl = zhp->zfs_hdl;
1744 1748 struct mnttab entry;
1745 1749
1746 1750 if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) {
1747 1751 zhp->zfs_mntopts = zfs_strdup(hdl,
1748 1752 entry.mnt_mntopts);
1749 1753 if (zhp->zfs_mntopts == NULL)
1750 1754 return (-1);
1751 1755 }
1752 1756
1753 1757 zhp->zfs_mntcheck = B_TRUE;
1754 1758 }
1755 1759
1756 1760 if (zhp->zfs_mntopts == NULL)
1757 1761 mnt.mnt_mntopts = "";
1758 1762 else
1759 1763 mnt.mnt_mntopts = zhp->zfs_mntopts;
1760 1764
1761 1765 switch (prop) {
1762 1766 case ZFS_PROP_ATIME:
1763 1767 case ZFS_PROP_DEVICES:
1764 1768 case ZFS_PROP_EXEC:
1765 1769 case ZFS_PROP_READONLY:
1766 1770 case ZFS_PROP_SETUID:
1767 1771 case ZFS_PROP_XATTR:
1768 1772 case ZFS_PROP_NBMAND:
1769 1773 *val = getprop_uint64(zhp, prop, source);
1770 1774
1771 1775 if (received)
1772 1776 break;
1773 1777
1774 1778 if (hasmntopt(&mnt, mntopt_on) && !*val) {
1775 1779 *val = B_TRUE;
1776 1780 if (src)
1777 1781 *src = ZPROP_SRC_TEMPORARY;
1778 1782 } else if (hasmntopt(&mnt, mntopt_off) && *val) {
1779 1783 *val = B_FALSE;
1780 1784 if (src)
1781 1785 *src = ZPROP_SRC_TEMPORARY;
1782 1786 }
1783 1787 break;
1784 1788
1785 1789 case ZFS_PROP_CANMOUNT:
1786 1790 case ZFS_PROP_VOLSIZE:
1787 1791 case ZFS_PROP_QUOTA:
1788 1792 case ZFS_PROP_REFQUOTA:
1789 1793 case ZFS_PROP_RESERVATION:
1790 1794 case ZFS_PROP_REFRESERVATION:
1791 1795 *val = getprop_uint64(zhp, prop, source);
1792 1796
1793 1797 if (*source == NULL) {
1794 1798 /* not default, must be local */
1795 1799 *source = zhp->zfs_name;
1796 1800 }
1797 1801 break;
1798 1802
1799 1803 case ZFS_PROP_MOUNTED:
1800 1804 *val = (zhp->zfs_mntopts != NULL);
1801 1805 break;
1802 1806
1803 1807 case ZFS_PROP_NUMCLONES:
1804 1808 *val = zhp->zfs_dmustats.dds_num_clones;
1805 1809 break;
1806 1810
1807 1811 case ZFS_PROP_VERSION:
1808 1812 case ZFS_PROP_NORMALIZE:
1809 1813 case ZFS_PROP_UTF8ONLY:
1810 1814 case ZFS_PROP_CASE:
1811 1815 if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) ||
1812 1816 zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0)
1813 1817 return (-1);
1814 1818 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1815 1819 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) {
1816 1820 zcmd_free_nvlists(&zc);
1817 1821 return (-1);
1818 1822 }
1819 1823 if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 ||
1820 1824 nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop),
1821 1825 val) != 0) {
1822 1826 zcmd_free_nvlists(&zc);
1823 1827 return (-1);
1824 1828 }
1825 1829 if (zplprops)
1826 1830 nvlist_free(zplprops);
1827 1831 zcmd_free_nvlists(&zc);
1828 1832 break;
1829 1833
1830 1834 default:
1831 1835 switch (zfs_prop_get_type(prop)) {
1832 1836 case PROP_TYPE_NUMBER:
1833 1837 case PROP_TYPE_INDEX:
1834 1838 *val = getprop_uint64(zhp, prop, source);
1835 1839 /*
1836 1840 * If we tried to use a default value for a
1837 1841 * readonly property, it means that it was not
1838 1842 * present.
1839 1843 */
1840 1844 if (zfs_prop_readonly(prop) &&
1841 1845 *source != NULL && (*source)[0] == '\0') {
1842 1846 *source = NULL;
1843 1847 }
1844 1848 break;
1845 1849
1846 1850 case PROP_TYPE_STRING:
1847 1851 default:
1848 1852 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
1849 1853 "cannot get non-numeric property"));
1850 1854 return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP,
1851 1855 dgettext(TEXT_DOMAIN, "internal error")));
1852 1856 }
1853 1857 }
1854 1858
1855 1859 return (0);
1856 1860 }
1857 1861
1858 1862 /*
1859 1863 * Calculate the source type, given the raw source string.
1860 1864 */
1861 1865 static void
1862 1866 get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source,
1863 1867 char *statbuf, size_t statlen)
1864 1868 {
1865 1869 if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY)
1866 1870 return;
1867 1871
1868 1872 if (source == NULL) {
1869 1873 *srctype = ZPROP_SRC_NONE;
1870 1874 } else if (source[0] == '\0') {
1871 1875 *srctype = ZPROP_SRC_DEFAULT;
1872 1876 } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) {
1873 1877 *srctype = ZPROP_SRC_RECEIVED;
1874 1878 } else {
1875 1879 if (strcmp(source, zhp->zfs_name) == 0) {
1876 1880 *srctype = ZPROP_SRC_LOCAL;
1877 1881 } else {
1878 1882 (void) strlcpy(statbuf, source, statlen);
1879 1883 *srctype = ZPROP_SRC_INHERITED;
1880 1884 }
1881 1885 }
1882 1886
1883 1887 }
1884 1888
1885 1889 int
1886 1890 zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf,
1887 1891 size_t proplen, boolean_t literal)
1888 1892 {
1889 1893 zfs_prop_t prop;
1890 1894 int err = 0;
1891 1895
1892 1896 if (zhp->zfs_recvd_props == NULL)
1893 1897 if (get_recvd_props_ioctl(zhp) != 0)
1894 1898 return (-1);
1895 1899
1896 1900 prop = zfs_name_to_prop(propname);
1897 1901
1898 1902 if (prop != ZPROP_INVAL) {
1899 1903 uint64_t cookie;
1900 1904 if (!nvlist_exists(zhp->zfs_recvd_props, propname))
1901 1905 return (-1);
1902 1906 zfs_set_recvd_props_mode(zhp, &cookie);
1903 1907 err = zfs_prop_get(zhp, prop, propbuf, proplen,
1904 1908 NULL, NULL, 0, literal);
1905 1909 zfs_unset_recvd_props_mode(zhp, &cookie);
1906 1910 } else {
1907 1911 nvlist_t *propval;
1908 1912 char *recvdval;
1909 1913 if (nvlist_lookup_nvlist(zhp->zfs_recvd_props,
1910 1914 propname, &propval) != 0)
1911 1915 return (-1);
1912 1916 verify(nvlist_lookup_string(propval, ZPROP_VALUE,
1913 1917 &recvdval) == 0);
1914 1918 (void) strlcpy(propbuf, recvdval, proplen);
1915 1919 }
1916 1920
1917 1921 return (err == 0 ? 0 : -1);
1918 1922 }
1919 1923
1920 1924 static int
1921 1925 get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen)
1922 1926 {
1923 1927 nvlist_t *value;
1924 1928 nvpair_t *pair;
1925 1929
1926 1930 value = zfs_get_clones_nvl(zhp);
1927 1931 if (value == NULL)
1928 1932 return (-1);
1929 1933
1930 1934 propbuf[0] = '\0';
1931 1935 for (pair = nvlist_next_nvpair(value, NULL); pair != NULL;
1932 1936 pair = nvlist_next_nvpair(value, pair)) {
1933 1937 if (propbuf[0] != '\0')
1934 1938 (void) strlcat(propbuf, ",", proplen);
1935 1939 (void) strlcat(propbuf, nvpair_name(pair), proplen);
1936 1940 }
1937 1941
1938 1942 return (0);
1939 1943 }
1940 1944
1941 1945 struct get_clones_arg {
1942 1946 uint64_t numclones;
1943 1947 nvlist_t *value;
1944 1948 const char *origin;
1945 1949 char buf[ZFS_MAXNAMELEN];
1946 1950 };
1947 1951
1948 1952 int
1949 1953 get_clones_cb(zfs_handle_t *zhp, void *arg)
1950 1954 {
1951 1955 struct get_clones_arg *gca = arg;
1952 1956
1953 1957 if (gca->numclones == 0) {
1954 1958 zfs_close(zhp);
1955 1959 return (0);
1956 1960 }
1957 1961
1958 1962 if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf),
1959 1963 NULL, NULL, 0, B_TRUE) != 0)
1960 1964 goto out;
1961 1965 if (strcmp(gca->buf, gca->origin) == 0) {
1962 1966 if (nvlist_add_boolean(gca->value, zfs_get_name(zhp)) != 0) {
1963 1967 zfs_close(zhp);
1964 1968 return (no_memory(zhp->zfs_hdl));
1965 1969 }
1966 1970 gca->numclones--;
1967 1971 }
1968 1972
1969 1973 out:
1970 1974 (void) zfs_iter_children(zhp, get_clones_cb, gca);
1971 1975 zfs_close(zhp);
1972 1976 return (0);
1973 1977 }
1974 1978
1975 1979 nvlist_t *
1976 1980 zfs_get_clones_nvl(zfs_handle_t *zhp)
1977 1981 {
1978 1982 nvlist_t *nv, *value;
1979 1983
1980 1984 if (nvlist_lookup_nvlist(zhp->zfs_props,
1981 1985 zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) {
1982 1986 struct get_clones_arg gca;
1983 1987
1984 1988 /*
1985 1989 * if this is a snapshot, then the kernel wasn't able
1986 1990 * to get the clones. Do it by slowly iterating.
1987 1991 */
1988 1992 if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT)
1989 1993 return (NULL);
1990 1994 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0)
1991 1995 return (NULL);
1992 1996 if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) {
1993 1997 nvlist_free(nv);
1994 1998 return (NULL);
1995 1999 }
1996 2000
1997 2001 gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES);
1998 2002 gca.value = value;
1999 2003 gca.origin = zhp->zfs_name;
2000 2004
2001 2005 if (gca.numclones != 0) {
2002 2006 zfs_handle_t *root;
2003 2007 char pool[ZFS_MAXNAMELEN];
2004 2008 char *cp = pool;
2005 2009
2006 2010 /* get the pool name */
2007 2011 (void) strlcpy(pool, zhp->zfs_name, sizeof (pool));
2008 2012 (void) strsep(&cp, "/@");
2009 2013 root = zfs_open(zhp->zfs_hdl, pool,
2010 2014 ZFS_TYPE_FILESYSTEM);
2011 2015
2012 2016 (void) get_clones_cb(root, &gca);
2013 2017 }
2014 2018
2015 2019 if (gca.numclones != 0 ||
2016 2020 nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 ||
2017 2021 nvlist_add_nvlist(zhp->zfs_props,
2018 2022 zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) {
2019 2023 nvlist_free(nv);
2020 2024 nvlist_free(value);
2021 2025 return (NULL);
2022 2026 }
2023 2027 nvlist_free(nv);
2024 2028 nvlist_free(value);
2025 2029 verify(0 == nvlist_lookup_nvlist(zhp->zfs_props,
2026 2030 zfs_prop_to_name(ZFS_PROP_CLONES), &nv));
2027 2031 }
2028 2032
2029 2033 verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0);
2030 2034
2031 2035 return (value);
2032 2036 }
2033 2037
2034 2038 /*
2035 2039 * Retrieve a property from the given object. If 'literal' is specified, then
2036 2040 * numbers are left as exact values. Otherwise, numbers are converted to a
2037 2041 * human-readable form.
2038 2042 *
2039 2043 * Returns 0 on success, or -1 on error.
2040 2044 */
2041 2045 int
2042 2046 zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen,
2043 2047 zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal)
2044 2048 {
2045 2049 char *source = NULL;
2046 2050 uint64_t val;
2047 2051 char *str;
2048 2052 const char *strval;
2049 2053 boolean_t received = zfs_is_recvd_props_mode(zhp);
2050 2054
2051 2055 /*
2052 2056 * Check to see if this property applies to our object
2053 2057 */
2054 2058 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type))
2055 2059 return (-1);
2056 2060
2057 2061 if (received && zfs_prop_readonly(prop))
2058 2062 return (-1);
2059 2063
2060 2064 if (src)
2061 2065 *src = ZPROP_SRC_NONE;
2062 2066
2063 2067 switch (prop) {
2064 2068 case ZFS_PROP_CREATION:
2065 2069 /*
2066 2070 * 'creation' is a time_t stored in the statistics. We convert
2067 2071 * this into a string unless 'literal' is specified.
2068 2072 */
2069 2073 {
2070 2074 val = getprop_uint64(zhp, prop, &source);
2071 2075 time_t time = (time_t)val;
2072 2076 struct tm t;
2073 2077
2074 2078 if (literal ||
2075 2079 localtime_r(&time, &t) == NULL ||
2076 2080 strftime(propbuf, proplen, "%a %b %e %k:%M %Y",
2077 2081 &t) == 0)
2078 2082 (void) snprintf(propbuf, proplen, "%llu", val);
2079 2083 }
2080 2084 break;
2081 2085
2082 2086 case ZFS_PROP_MOUNTPOINT:
2083 2087 /*
2084 2088 * Getting the precise mountpoint can be tricky.
2085 2089 *
2086 2090 * - for 'none' or 'legacy', return those values.
2087 2091 * - for inherited mountpoints, we want to take everything
2088 2092 * after our ancestor and append it to the inherited value.
2089 2093 *
2090 2094 * If the pool has an alternate root, we want to prepend that
2091 2095 * root to any values we return.
2092 2096 */
2093 2097
2094 2098 str = getprop_string(zhp, prop, &source);
2095 2099
2096 2100 if (str[0] == '/') {
2097 2101 char buf[MAXPATHLEN];
2098 2102 char *root = buf;
2099 2103 const char *relpath;
2100 2104
2101 2105 /*
2102 2106 * If we inherit the mountpoint, even from a dataset
2103 2107 * with a received value, the source will be the path of
2104 2108 * the dataset we inherit from. If source is
2105 2109 * ZPROP_SOURCE_VAL_RECVD, the received value is not
2106 2110 * inherited.
2107 2111 */
2108 2112 if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) {
2109 2113 relpath = "";
2110 2114 } else {
2111 2115 relpath = zhp->zfs_name + strlen(source);
2112 2116 if (relpath[0] == '/')
2113 2117 relpath++;
2114 2118 }
2115 2119
2116 2120 if ((zpool_get_prop(zhp->zpool_hdl,
2117 2121 ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL)) ||
2118 2122 (strcmp(root, "-") == 0))
2119 2123 root[0] = '\0';
2120 2124 /*
2121 2125 * Special case an alternate root of '/'. This will
2122 2126 * avoid having multiple leading slashes in the
2123 2127 * mountpoint path.
2124 2128 */
2125 2129 if (strcmp(root, "/") == 0)
2126 2130 root++;
2127 2131
2128 2132 /*
2129 2133 * If the mountpoint is '/' then skip over this
2130 2134 * if we are obtaining either an alternate root or
2131 2135 * an inherited mountpoint.
2132 2136 */
2133 2137 if (str[1] == '\0' && (root[0] != '\0' ||
2134 2138 relpath[0] != '\0'))
2135 2139 str++;
2136 2140
2137 2141 if (relpath[0] == '\0')
2138 2142 (void) snprintf(propbuf, proplen, "%s%s",
2139 2143 root, str);
2140 2144 else
2141 2145 (void) snprintf(propbuf, proplen, "%s%s%s%s",
2142 2146 root, str, relpath[0] == '@' ? "" : "/",
2143 2147 relpath);
2144 2148 } else {
2145 2149 /* 'legacy' or 'none' */
2146 2150 (void) strlcpy(propbuf, str, proplen);
2147 2151 }
2148 2152
2149 2153 break;
2150 2154
2151 2155 case ZFS_PROP_ORIGIN:
2152 2156 (void) strlcpy(propbuf, getprop_string(zhp, prop, &source),
2153 2157 proplen);
2154 2158 /*
2155 2159 * If there is no parent at all, return failure to indicate that
2156 2160 * it doesn't apply to this dataset.
2157 2161 */
2158 2162 if (propbuf[0] == '\0')
2159 2163 return (-1);
2160 2164 break;
2161 2165
2162 2166 case ZFS_PROP_CLONES:
2163 2167 if (get_clones_string(zhp, propbuf, proplen) != 0)
2164 2168 return (-1);
2165 2169 break;
2166 2170
2167 2171 case ZFS_PROP_QUOTA:
2168 2172 case ZFS_PROP_REFQUOTA:
2169 2173 case ZFS_PROP_RESERVATION:
2170 2174 case ZFS_PROP_REFRESERVATION:
2171 2175
2172 2176 if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
2173 2177 return (-1);
2174 2178
2175 2179 /*
2176 2180 * If quota or reservation is 0, we translate this into 'none'
2177 2181 * (unless literal is set), and indicate that it's the default
2178 2182 * value. Otherwise, we print the number nicely and indicate
2179 2183 * that its set locally.
2180 2184 */
2181 2185 if (val == 0) {
2182 2186 if (literal)
2183 2187 (void) strlcpy(propbuf, "0", proplen);
2184 2188 else
2185 2189 (void) strlcpy(propbuf, "none", proplen);
2186 2190 } else {
2187 2191 if (literal)
2188 2192 (void) snprintf(propbuf, proplen, "%llu",
2189 2193 (u_longlong_t)val);
2190 2194 else
2191 2195 zfs_nicenum(val, propbuf, proplen);
2192 2196 }
2193 2197 break;
2194 2198
2195 2199 case ZFS_PROP_REFRATIO:
2196 2200 case ZFS_PROP_COMPRESSRATIO:
2197 2201 if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
2198 2202 return (-1);
2199 2203 (void) snprintf(propbuf, proplen, "%llu.%02llux",
2200 2204 (u_longlong_t)(val / 100),
2201 2205 (u_longlong_t)(val % 100));
2202 2206 break;
2203 2207
2204 2208 case ZFS_PROP_TYPE:
2205 2209 switch (zhp->zfs_type) {
2206 2210 case ZFS_TYPE_FILESYSTEM:
2207 2211 str = "filesystem";
2208 2212 break;
2209 2213 case ZFS_TYPE_VOLUME:
2210 2214 str = "volume";
2211 2215 break;
2212 2216 case ZFS_TYPE_SNAPSHOT:
2213 2217 str = "snapshot";
2214 2218 break;
2215 2219 default:
2216 2220 abort();
2217 2221 }
2218 2222 (void) snprintf(propbuf, proplen, "%s", str);
2219 2223 break;
2220 2224
2221 2225 case ZFS_PROP_MOUNTED:
2222 2226 /*
2223 2227 * The 'mounted' property is a pseudo-property that described
2224 2228 * whether the filesystem is currently mounted. Even though
2225 2229 * it's a boolean value, the typical values of "on" and "off"
2226 2230 * don't make sense, so we translate to "yes" and "no".
2227 2231 */
2228 2232 if (get_numeric_property(zhp, ZFS_PROP_MOUNTED,
2229 2233 src, &source, &val) != 0)
2230 2234 return (-1);
2231 2235 if (val)
2232 2236 (void) strlcpy(propbuf, "yes", proplen);
2233 2237 else
2234 2238 (void) strlcpy(propbuf, "no", proplen);
2235 2239 break;
2236 2240
2237 2241 case ZFS_PROP_NAME:
2238 2242 /*
2239 2243 * The 'name' property is a pseudo-property derived from the
2240 2244 * dataset name. It is presented as a real property to simplify
2241 2245 * consumers.
2242 2246 */
2243 2247 (void) strlcpy(propbuf, zhp->zfs_name, proplen);
2244 2248 break;
2245 2249
2246 2250 case ZFS_PROP_MLSLABEL:
2247 2251 {
2248 2252 m_label_t *new_sl = NULL;
2249 2253 char *ascii = NULL; /* human readable label */
2250 2254
2251 2255 (void) strlcpy(propbuf,
2252 2256 getprop_string(zhp, prop, &source), proplen);
2253 2257
2254 2258 if (literal || (strcasecmp(propbuf,
2255 2259 ZFS_MLSLABEL_DEFAULT) == 0))
2256 2260 break;
2257 2261
2258 2262 /*
2259 2263 * Try to translate the internal hex string to
2260 2264 * human-readable output. If there are any
2261 2265 * problems just use the hex string.
2262 2266 */
2263 2267
2264 2268 if (str_to_label(propbuf, &new_sl, MAC_LABEL,
2265 2269 L_NO_CORRECTION, NULL) == -1) {
2266 2270 m_label_free(new_sl);
2267 2271 break;
2268 2272 }
2269 2273
2270 2274 if (label_to_str(new_sl, &ascii, M_LABEL,
2271 2275 DEF_NAMES) != 0) {
2272 2276 if (ascii)
2273 2277 free(ascii);
2274 2278 m_label_free(new_sl);
2275 2279 break;
2276 2280 }
2277 2281 m_label_free(new_sl);
2278 2282
2279 2283 (void) strlcpy(propbuf, ascii, proplen);
2280 2284 free(ascii);
2281 2285 }
2282 2286 break;
2283 2287
2284 2288 case ZFS_PROP_GUID:
2285 2289 /*
2286 2290 * GUIDs are stored as numbers, but they are identifiers.
2287 2291 * We don't want them to be pretty printed, because pretty
2288 2292 * printing mangles the ID into a truncated and useless value.
2289 2293 */
2290 2294 if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
2291 2295 return (-1);
2292 2296 (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val);
2293 2297 break;
2294 2298
2295 2299 default:
2296 2300 switch (zfs_prop_get_type(prop)) {
2297 2301 case PROP_TYPE_NUMBER:
2298 2302 if (get_numeric_property(zhp, prop, src,
2299 2303 &source, &val) != 0)
2300 2304 return (-1);
2301 2305 if (literal)
2302 2306 (void) snprintf(propbuf, proplen, "%llu",
2303 2307 (u_longlong_t)val);
2304 2308 else
2305 2309 zfs_nicenum(val, propbuf, proplen);
2306 2310 break;
2307 2311
2308 2312 case PROP_TYPE_STRING:
2309 2313 (void) strlcpy(propbuf,
2310 2314 getprop_string(zhp, prop, &source), proplen);
2311 2315 break;
2312 2316
2313 2317 case PROP_TYPE_INDEX:
2314 2318 if (get_numeric_property(zhp, prop, src,
2315 2319 &source, &val) != 0)
2316 2320 return (-1);
2317 2321 if (zfs_prop_index_to_string(prop, val, &strval) != 0)
2318 2322 return (-1);
2319 2323 (void) strlcpy(propbuf, strval, proplen);
2320 2324 break;
2321 2325
2322 2326 default:
2323 2327 abort();
2324 2328 }
2325 2329 }
2326 2330
2327 2331 get_source(zhp, src, source, statbuf, statlen);
2328 2332
2329 2333 return (0);
2330 2334 }
2331 2335
2332 2336 /*
2333 2337 * Utility function to get the given numeric property. Does no validation that
2334 2338 * the given property is the appropriate type; should only be used with
2335 2339 * hard-coded property types.
2336 2340 */
2337 2341 uint64_t
2338 2342 zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop)
2339 2343 {
2340 2344 char *source;
2341 2345 uint64_t val;
2342 2346
2343 2347 (void) get_numeric_property(zhp, prop, NULL, &source, &val);
2344 2348
2345 2349 return (val);
2346 2350 }
2347 2351
2348 2352 int
2349 2353 zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val)
2350 2354 {
2351 2355 char buf[64];
2352 2356
2353 2357 (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val);
2354 2358 return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf));
2355 2359 }
2356 2360
2357 2361 /*
2358 2362 * Similar to zfs_prop_get(), but returns the value as an integer.
2359 2363 */
2360 2364 int
2361 2365 zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value,
2362 2366 zprop_source_t *src, char *statbuf, size_t statlen)
2363 2367 {
2364 2368 char *source;
2365 2369
2366 2370 /*
2367 2371 * Check to see if this property applies to our object
2368 2372 */
2369 2373 if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) {
2370 2374 return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE,
2371 2375 dgettext(TEXT_DOMAIN, "cannot get property '%s'"),
2372 2376 zfs_prop_to_name(prop)));
2373 2377 }
2374 2378
2375 2379 if (src)
2376 2380 *src = ZPROP_SRC_NONE;
2377 2381
2378 2382 if (get_numeric_property(zhp, prop, src, &source, value) != 0)
2379 2383 return (-1);
2380 2384
2381 2385 get_source(zhp, src, source, statbuf, statlen);
2382 2386
2383 2387 return (0);
2384 2388 }
2385 2389
2386 2390 static int
2387 2391 idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser,
2388 2392 char **domainp, idmap_rid_t *ridp)
2389 2393 {
2390 2394 idmap_get_handle_t *get_hdl = NULL;
2391 2395 idmap_stat status;
2392 2396 int err = EINVAL;
2393 2397
2394 2398 if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS)
2395 2399 goto out;
2396 2400
2397 2401 if (isuser) {
2398 2402 err = idmap_get_sidbyuid(get_hdl, id,
2399 2403 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status);
2400 2404 } else {
2401 2405 err = idmap_get_sidbygid(get_hdl, id,
2402 2406 IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status);
2403 2407 }
2404 2408 if (err == IDMAP_SUCCESS &&
2405 2409 idmap_get_mappings(get_hdl) == IDMAP_SUCCESS &&
2406 2410 status == IDMAP_SUCCESS)
2407 2411 err = 0;
2408 2412 else
2409 2413 err = EINVAL;
2410 2414 out:
2411 2415 if (get_hdl)
2412 2416 idmap_get_destroy(get_hdl);
2413 2417 return (err);
2414 2418 }
2415 2419
2416 2420 /*
2417 2421 * convert the propname into parameters needed by kernel
2418 2422 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829
2419 2423 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789
2420 2424 */
2421 2425 static int
2422 2426 userquota_propname_decode(const char *propname, boolean_t zoned,
2423 2427 zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp)
2424 2428 {
2425 2429 zfs_userquota_prop_t type;
2426 2430 char *cp, *end;
2427 2431 char *numericsid = NULL;
2428 2432 boolean_t isuser;
2429 2433
2430 2434 domain[0] = '\0';
2431 2435
2432 2436 /* Figure out the property type ({user|group}{quota|space}) */
2433 2437 for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) {
2434 2438 if (strncmp(propname, zfs_userquota_prop_prefixes[type],
2435 2439 strlen(zfs_userquota_prop_prefixes[type])) == 0)
2436 2440 break;
2437 2441 }
2438 2442 if (type == ZFS_NUM_USERQUOTA_PROPS)
2439 2443 return (EINVAL);
2440 2444 *typep = type;
2441 2445
2442 2446 isuser = (type == ZFS_PROP_USERQUOTA ||
2443 2447 type == ZFS_PROP_USERUSED);
2444 2448
2445 2449 cp = strchr(propname, '@') + 1;
2446 2450
2447 2451 if (strchr(cp, '@')) {
2448 2452 /*
2449 2453 * It's a SID name (eg "user@domain") that needs to be
2450 2454 * turned into S-1-domainID-RID.
2451 2455 */
2452 2456 directory_error_t e;
2453 2457 if (zoned && getzoneid() == GLOBAL_ZONEID)
2454 2458 return (ENOENT);
2455 2459 if (isuser) {
2456 2460 e = directory_sid_from_user_name(NULL,
2457 2461 cp, &numericsid);
2458 2462 } else {
2459 2463 e = directory_sid_from_group_name(NULL,
2460 2464 cp, &numericsid);
2461 2465 }
2462 2466 if (e != NULL) {
2463 2467 directory_error_free(e);
2464 2468 return (ENOENT);
2465 2469 }
2466 2470 if (numericsid == NULL)
2467 2471 return (ENOENT);
2468 2472 cp = numericsid;
2469 2473 /* will be further decoded below */
2470 2474 }
2471 2475
2472 2476 if (strncmp(cp, "S-1-", 4) == 0) {
2473 2477 /* It's a numeric SID (eg "S-1-234-567-89") */
2474 2478 (void) strlcpy(domain, cp, domainlen);
2475 2479 cp = strrchr(domain, '-');
2476 2480 *cp = '\0';
2477 2481 cp++;
2478 2482
2479 2483 errno = 0;
2480 2484 *ridp = strtoull(cp, &end, 10);
2481 2485 if (numericsid) {
2482 2486 free(numericsid);
2483 2487 numericsid = NULL;
2484 2488 }
2485 2489 if (errno != 0 || *end != '\0')
2486 2490 return (EINVAL);
2487 2491 } else if (!isdigit(*cp)) {
2488 2492 /*
2489 2493 * It's a user/group name (eg "user") that needs to be
2490 2494 * turned into a uid/gid
2491 2495 */
2492 2496 if (zoned && getzoneid() == GLOBAL_ZONEID)
2493 2497 return (ENOENT);
2494 2498 if (isuser) {
2495 2499 struct passwd *pw;
2496 2500 pw = getpwnam(cp);
2497 2501 if (pw == NULL)
2498 2502 return (ENOENT);
2499 2503 *ridp = pw->pw_uid;
2500 2504 } else {
2501 2505 struct group *gr;
2502 2506 gr = getgrnam(cp);
2503 2507 if (gr == NULL)
2504 2508 return (ENOENT);
2505 2509 *ridp = gr->gr_gid;
2506 2510 }
2507 2511 } else {
2508 2512 /* It's a user/group ID (eg "12345"). */
2509 2513 uid_t id = strtoul(cp, &end, 10);
2510 2514 idmap_rid_t rid;
2511 2515 char *mapdomain;
2512 2516
2513 2517 if (*end != '\0')
2514 2518 return (EINVAL);
2515 2519 if (id > MAXUID) {
2516 2520 /* It's an ephemeral ID. */
2517 2521 if (idmap_id_to_numeric_domain_rid(id, isuser,
2518 2522 &mapdomain, &rid) != 0)
2519 2523 return (ENOENT);
2520 2524 (void) strlcpy(domain, mapdomain, domainlen);
2521 2525 *ridp = rid;
2522 2526 } else {
2523 2527 *ridp = id;
2524 2528 }
2525 2529 }
2526 2530
2527 2531 ASSERT3P(numericsid, ==, NULL);
2528 2532 return (0);
2529 2533 }
2530 2534
2531 2535 static int
2532 2536 zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname,
2533 2537 uint64_t *propvalue, zfs_userquota_prop_t *typep)
2534 2538 {
2535 2539 int err;
2536 2540 zfs_cmd_t zc = { 0 };
2537 2541
2538 2542 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
2539 2543
2540 2544 err = userquota_propname_decode(propname,
2541 2545 zfs_prop_get_int(zhp, ZFS_PROP_ZONED),
2542 2546 typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid);
2543 2547 zc.zc_objset_type = *typep;
2544 2548 if (err)
2545 2549 return (err);
2546 2550
2547 2551 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc);
2548 2552 if (err)
2549 2553 return (err);
2550 2554
2551 2555 *propvalue = zc.zc_cookie;
2552 2556 return (0);
2553 2557 }
2554 2558
2555 2559 int
2556 2560 zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname,
2557 2561 uint64_t *propvalue)
2558 2562 {
2559 2563 zfs_userquota_prop_t type;
2560 2564
2561 2565 return (zfs_prop_get_userquota_common(zhp, propname, propvalue,
2562 2566 &type));
2563 2567 }
2564 2568
2565 2569 int
2566 2570 zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname,
2567 2571 char *propbuf, int proplen, boolean_t literal)
2568 2572 {
2569 2573 int err;
2570 2574 uint64_t propvalue;
2571 2575 zfs_userquota_prop_t type;
2572 2576
2573 2577 err = zfs_prop_get_userquota_common(zhp, propname, &propvalue,
2574 2578 &type);
2575 2579
2576 2580 if (err)
2577 2581 return (err);
2578 2582
2579 2583 if (literal) {
2580 2584 (void) snprintf(propbuf, proplen, "%llu", propvalue);
2581 2585 } else if (propvalue == 0 &&
2582 2586 (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) {
2583 2587 (void) strlcpy(propbuf, "none", proplen);
2584 2588 } else {
2585 2589 zfs_nicenum(propvalue, propbuf, proplen);
2586 2590 }
2587 2591 return (0);
2588 2592 }
2589 2593
2590 2594 int
2591 2595 zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname,
2592 2596 uint64_t *propvalue)
2593 2597 {
2594 2598 int err;
2595 2599 zfs_cmd_t zc = { 0 };
2596 2600 const char *snapname;
2597 2601
2598 2602 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
2599 2603
2600 2604 snapname = strchr(propname, '@') + 1;
2601 2605 if (strchr(snapname, '@')) {
2602 2606 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
2603 2607 } else {
2604 2608 /* snapname is the short name, append it to zhp's fsname */
2605 2609 char *cp;
2606 2610
2607 2611 (void) strlcpy(zc.zc_value, zhp->zfs_name,
2608 2612 sizeof (zc.zc_value));
2609 2613 cp = strchr(zc.zc_value, '@');
2610 2614 if (cp != NULL)
2611 2615 *cp = '\0';
2612 2616 (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value));
2613 2617 (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value));
2614 2618 }
2615 2619
2616 2620 err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc);
2617 2621 if (err)
2618 2622 return (err);
2619 2623
2620 2624 *propvalue = zc.zc_cookie;
2621 2625 return (0);
2622 2626 }
2623 2627
2624 2628 int
2625 2629 zfs_prop_get_written(zfs_handle_t *zhp, const char *propname,
2626 2630 char *propbuf, int proplen, boolean_t literal)
2627 2631 {
2628 2632 int err;
2629 2633 uint64_t propvalue;
2630 2634
2631 2635 err = zfs_prop_get_written_int(zhp, propname, &propvalue);
2632 2636
2633 2637 if (err)
|
↓ open down ↓ |
1168 lines elided |
↑ open up ↑ |
2634 2638 return (err);
2635 2639
2636 2640 if (literal) {
2637 2641 (void) snprintf(propbuf, proplen, "%llu", propvalue);
2638 2642 } else {
2639 2643 zfs_nicenum(propvalue, propbuf, proplen);
2640 2644 }
2641 2645 return (0);
2642 2646 }
2643 2647
2644 -int
2645 -zfs_get_snapused_int(zfs_handle_t *firstsnap, zfs_handle_t *lastsnap,
2646 - uint64_t *usedp)
2647 -{
2648 - int err;
2649 - zfs_cmd_t zc = { 0 };
2650 -
2651 - (void) strlcpy(zc.zc_name, lastsnap->zfs_name, sizeof (zc.zc_name));
2652 - (void) strlcpy(zc.zc_value, firstsnap->zfs_name, sizeof (zc.zc_value));
2653 -
2654 - err = ioctl(lastsnap->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_SNAPS, &zc);
2655 - if (err)
2656 - return (err);
2657 -
2658 - *usedp = zc.zc_cookie;
2659 -
2660 - return (0);
2661 -}
2662 -
2663 2648 /*
2664 2649 * Returns the name of the given zfs handle.
2665 2650 */
2666 2651 const char *
2667 2652 zfs_get_name(const zfs_handle_t *zhp)
2668 2653 {
2669 2654 return (zhp->zfs_name);
2670 2655 }
2671 2656
2672 2657 /*
2673 2658 * Returns the type of the given zfs handle.
2674 2659 */
2675 2660 zfs_type_t
2676 2661 zfs_get_type(const zfs_handle_t *zhp)
2677 2662 {
2678 2663 return (zhp->zfs_type);
2679 2664 }
2680 2665
2681 2666 /*
2682 2667 * Is one dataset name a child dataset of another?
2683 2668 *
2684 2669 * Needs to handle these cases:
2685 2670 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo"
2686 2671 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar"
2687 2672 * Descendant? No. No. No. Yes.
2688 2673 */
2689 2674 static boolean_t
2690 2675 is_descendant(const char *ds1, const char *ds2)
2691 2676 {
2692 2677 size_t d1len = strlen(ds1);
2693 2678
2694 2679 /* ds2 can't be a descendant if it's smaller */
2695 2680 if (strlen(ds2) < d1len)
2696 2681 return (B_FALSE);
2697 2682
2698 2683 /* otherwise, compare strings and verify that there's a '/' char */
2699 2684 return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0));
2700 2685 }
2701 2686
2702 2687 /*
2703 2688 * Given a complete name, return just the portion that refers to the parent.
2704 2689 * Will return -1 if there is no parent (path is just the name of the
2705 2690 * pool).
2706 2691 */
2707 2692 static int
2708 2693 parent_name(const char *path, char *buf, size_t buflen)
2709 2694 {
2710 2695 char *slashp;
2711 2696
2712 2697 (void) strlcpy(buf, path, buflen);
2713 2698
2714 2699 if ((slashp = strrchr(buf, '/')) == NULL)
2715 2700 return (-1);
2716 2701 *slashp = '\0';
2717 2702
2718 2703 return (0);
2719 2704 }
2720 2705
2721 2706 /*
2722 2707 * If accept_ancestor is false, then check to make sure that the given path has
2723 2708 * a parent, and that it exists. If accept_ancestor is true, then find the
2724 2709 * closest existing ancestor for the given path. In prefixlen return the
2725 2710 * length of already existing prefix of the given path. We also fetch the
2726 2711 * 'zoned' property, which is used to validate property settings when creating
2727 2712 * new datasets.
2728 2713 */
2729 2714 static int
2730 2715 check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned,
2731 2716 boolean_t accept_ancestor, int *prefixlen)
2732 2717 {
2733 2718 zfs_cmd_t zc = { 0 };
2734 2719 char parent[ZFS_MAXNAMELEN];
2735 2720 char *slash;
2736 2721 zfs_handle_t *zhp;
2737 2722 char errbuf[1024];
2738 2723 uint64_t is_zoned;
2739 2724
2740 2725 (void) snprintf(errbuf, sizeof (errbuf),
2741 2726 dgettext(TEXT_DOMAIN, "cannot create '%s'"), path);
2742 2727
2743 2728 /* get parent, and check to see if this is just a pool */
2744 2729 if (parent_name(path, parent, sizeof (parent)) != 0) {
2745 2730 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2746 2731 "missing dataset name"));
2747 2732 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
2748 2733 }
2749 2734
2750 2735 /* check to see if the pool exists */
2751 2736 if ((slash = strchr(parent, '/')) == NULL)
2752 2737 slash = parent + strlen(parent);
2753 2738 (void) strncpy(zc.zc_name, parent, slash - parent);
2754 2739 zc.zc_name[slash - parent] = '\0';
2755 2740 if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 &&
2756 2741 errno == ENOENT) {
2757 2742 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2758 2743 "no such pool '%s'"), zc.zc_name);
2759 2744 return (zfs_error(hdl, EZFS_NOENT, errbuf));
2760 2745 }
2761 2746
2762 2747 /* check to see if the parent dataset exists */
2763 2748 while ((zhp = make_dataset_handle(hdl, parent)) == NULL) {
2764 2749 if (errno == ENOENT && accept_ancestor) {
2765 2750 /*
2766 2751 * Go deeper to find an ancestor, give up on top level.
2767 2752 */
2768 2753 if (parent_name(parent, parent, sizeof (parent)) != 0) {
2769 2754 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2770 2755 "no such pool '%s'"), zc.zc_name);
2771 2756 return (zfs_error(hdl, EZFS_NOENT, errbuf));
2772 2757 }
2773 2758 } else if (errno == ENOENT) {
2774 2759 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2775 2760 "parent does not exist"));
2776 2761 return (zfs_error(hdl, EZFS_NOENT, errbuf));
2777 2762 } else
2778 2763 return (zfs_standard_error(hdl, errno, errbuf));
2779 2764 }
2780 2765
2781 2766 is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
2782 2767 if (zoned != NULL)
2783 2768 *zoned = is_zoned;
2784 2769
2785 2770 /* we are in a non-global zone, but parent is in the global zone */
2786 2771 if (getzoneid() != GLOBAL_ZONEID && !is_zoned) {
2787 2772 (void) zfs_standard_error(hdl, EPERM, errbuf);
2788 2773 zfs_close(zhp);
2789 2774 return (-1);
2790 2775 }
2791 2776
2792 2777 /* make sure parent is a filesystem */
2793 2778 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) {
2794 2779 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2795 2780 "parent is not a filesystem"));
2796 2781 (void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
2797 2782 zfs_close(zhp);
2798 2783 return (-1);
2799 2784 }
2800 2785
2801 2786 zfs_close(zhp);
2802 2787 if (prefixlen != NULL)
2803 2788 *prefixlen = strlen(parent);
2804 2789 return (0);
2805 2790 }
2806 2791
2807 2792 /*
2808 2793 * Finds whether the dataset of the given type(s) exists.
2809 2794 */
2810 2795 boolean_t
2811 2796 zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types)
2812 2797 {
2813 2798 zfs_handle_t *zhp;
2814 2799
2815 2800 if (!zfs_validate_name(hdl, path, types, B_FALSE))
2816 2801 return (B_FALSE);
2817 2802
2818 2803 /*
2819 2804 * Try to get stats for the dataset, which will tell us if it exists.
2820 2805 */
2821 2806 if ((zhp = make_dataset_handle(hdl, path)) != NULL) {
2822 2807 int ds_type = zhp->zfs_type;
2823 2808
2824 2809 zfs_close(zhp);
2825 2810 if (types & ds_type)
2826 2811 return (B_TRUE);
2827 2812 }
2828 2813 return (B_FALSE);
2829 2814 }
2830 2815
2831 2816 /*
2832 2817 * Given a path to 'target', create all the ancestors between
2833 2818 * the prefixlen portion of the path, and the target itself.
2834 2819 * Fail if the initial prefixlen-ancestor does not already exist.
2835 2820 */
2836 2821 int
2837 2822 create_parents(libzfs_handle_t *hdl, char *target, int prefixlen)
2838 2823 {
2839 2824 zfs_handle_t *h;
2840 2825 char *cp;
2841 2826 const char *opname;
2842 2827
2843 2828 /* make sure prefix exists */
2844 2829 cp = target + prefixlen;
2845 2830 if (*cp != '/') {
2846 2831 assert(strchr(cp, '/') == NULL);
2847 2832 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
2848 2833 } else {
2849 2834 *cp = '\0';
2850 2835 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
2851 2836 *cp = '/';
2852 2837 }
|
↓ open down ↓ |
180 lines elided |
↑ open up ↑ |
2853 2838 if (h == NULL)
2854 2839 return (-1);
2855 2840 zfs_close(h);
2856 2841
2857 2842 /*
2858 2843 * Attempt to create, mount, and share any ancestor filesystems,
2859 2844 * up to the prefixlen-long one.
2860 2845 */
2861 2846 for (cp = target + prefixlen + 1;
2862 2847 cp = strchr(cp, '/'); *cp = '/', cp++) {
2863 - char *logstr;
2864 2848
2865 2849 *cp = '\0';
2866 2850
2867 2851 h = make_dataset_handle(hdl, target);
2868 2852 if (h) {
2869 2853 /* it already exists, nothing to do here */
2870 2854 zfs_close(h);
2871 2855 continue;
2872 2856 }
2873 2857
2874 - logstr = hdl->libzfs_log_str;
2875 - hdl->libzfs_log_str = NULL;
2876 2858 if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM,
2877 2859 NULL) != 0) {
2878 - hdl->libzfs_log_str = logstr;
2879 2860 opname = dgettext(TEXT_DOMAIN, "create");
2880 2861 goto ancestorerr;
2881 2862 }
2882 2863
2883 - hdl->libzfs_log_str = logstr;
2884 2864 h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
2885 2865 if (h == NULL) {
2886 2866 opname = dgettext(TEXT_DOMAIN, "open");
2887 2867 goto ancestorerr;
2888 2868 }
2889 2869
2890 2870 if (zfs_mount(h, NULL, 0) != 0) {
2891 2871 opname = dgettext(TEXT_DOMAIN, "mount");
2892 2872 goto ancestorerr;
2893 2873 }
2894 2874
2895 2875 if (zfs_share(h) != 0) {
2896 2876 opname = dgettext(TEXT_DOMAIN, "share");
2897 2877 goto ancestorerr;
2898 2878 }
2899 2879
2900 2880 zfs_close(h);
2901 2881 }
2902 2882
2903 2883 return (0);
2904 2884
2905 2885 ancestorerr:
2906 2886 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2907 2887 "failed to %s ancestor '%s'"), opname, target);
2908 2888 return (-1);
2909 2889 }
2910 2890
2911 2891 /*
2912 2892 * Creates non-existing ancestors of the given path.
2913 2893 */
2914 2894 int
2915 2895 zfs_create_ancestors(libzfs_handle_t *hdl, const char *path)
2916 2896 {
2917 2897 int prefix;
2918 2898 char *path_copy;
2919 2899 int rc;
2920 2900
2921 2901 if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0)
2922 2902 return (-1);
2923 2903
2924 2904 if ((path_copy = strdup(path)) != NULL) {
2925 2905 rc = create_parents(hdl, path_copy, prefix);
2926 2906 free(path_copy);
2927 2907 }
2928 2908 if (path_copy == NULL || rc != 0)
2929 2909 return (-1);
2930 2910
|
↓ open down ↓ |
37 lines elided |
↑ open up ↑ |
2931 2911 return (0);
2932 2912 }
2933 2913
2934 2914 /*
2935 2915 * Create a new filesystem or volume.
2936 2916 */
2937 2917 int
2938 2918 zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type,
2939 2919 nvlist_t *props)
2940 2920 {
2941 - zfs_cmd_t zc = { 0 };
2942 2921 int ret;
2943 2922 uint64_t size = 0;
2944 2923 uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE);
2945 2924 char errbuf[1024];
2946 2925 uint64_t zoned;
2926 + dmu_objset_type_t ost;
2947 2927
2948 2928 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
2949 2929 "cannot create '%s'"), path);
2950 2930
2951 2931 /* validate the path, taking care to note the extended error message */
2952 2932 if (!zfs_validate_name(hdl, path, type, B_TRUE))
2953 2933 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
2954 2934
2955 2935 /* validate parents exist */
2956 2936 if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0)
2957 2937 return (-1);
2958 2938
2959 2939 /*
2960 2940 * The failure modes when creating a dataset of a different type over
2961 2941 * one that already exists is a little strange. In particular, if you
2962 2942 * try to create a dataset on top of an existing dataset, the ioctl()
2963 2943 * will return ENOENT, not EEXIST. To prevent this from happening, we
2964 2944 * first try to see if the dataset exists.
2965 2945 */
2966 - (void) strlcpy(zc.zc_name, path, sizeof (zc.zc_name));
2967 - if (zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) {
2946 + if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) {
2968 2947 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2969 2948 "dataset already exists"));
2970 2949 return (zfs_error(hdl, EZFS_EXISTS, errbuf));
2971 2950 }
2972 2951
2973 2952 if (type == ZFS_TYPE_VOLUME)
2974 - zc.zc_objset_type = DMU_OST_ZVOL;
2953 + ost = DMU_OST_ZVOL;
2975 2954 else
2976 - zc.zc_objset_type = DMU_OST_ZFS;
2955 + ost = DMU_OST_ZFS;
2977 2956
2978 2957 if (props && (props = zfs_valid_proplist(hdl, type, props,
2979 2958 zoned, NULL, errbuf)) == 0)
2980 2959 return (-1);
2981 2960
2982 2961 if (type == ZFS_TYPE_VOLUME) {
2983 2962 /*
2984 2963 * If we are creating a volume, the size and block size must
2985 2964 * satisfy a few restraints. First, the blocksize must be a
2986 2965 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the
2987 2966 * volsize must be a multiple of the block size, and cannot be
2988 2967 * zero.
2989 2968 */
2990 2969 if (props == NULL || nvlist_lookup_uint64(props,
2991 2970 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) {
2992 2971 nvlist_free(props);
2993 2972 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2994 2973 "missing volume size"));
2995 2974 return (zfs_error(hdl, EZFS_BADPROP, errbuf));
2996 2975 }
2997 2976
2998 2977 if ((ret = nvlist_lookup_uint64(props,
2999 2978 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
3000 2979 &blocksize)) != 0) {
3001 2980 if (ret == ENOENT) {
3002 2981 blocksize = zfs_prop_default_numeric(
3003 2982 ZFS_PROP_VOLBLOCKSIZE);
3004 2983 } else {
3005 2984 nvlist_free(props);
3006 2985 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3007 2986 "missing volume block size"));
3008 2987 return (zfs_error(hdl, EZFS_BADPROP, errbuf));
3009 2988 }
3010 2989 }
3011 2990
3012 2991 if (size == 0) {
3013 2992 nvlist_free(props);
3014 2993 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3015 2994 "volume size cannot be zero"));
3016 2995 return (zfs_error(hdl, EZFS_BADPROP, errbuf));
3017 2996 }
|
↓ open down ↓ |
31 lines elided |
↑ open up ↑ |
3018 2997
3019 2998 if (size % blocksize != 0) {
3020 2999 nvlist_free(props);
3021 3000 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3022 3001 "volume size must be a multiple of volume block "
3023 3002 "size"));
3024 3003 return (zfs_error(hdl, EZFS_BADPROP, errbuf));
3025 3004 }
3026 3005 }
3027 3006
3028 - if (props && zcmd_write_src_nvlist(hdl, &zc, props) != 0)
3029 - return (-1);
3030 - nvlist_free(props);
3031 -
3032 3007 /* create the dataset */
3033 - ret = zfs_ioctl(hdl, ZFS_IOC_CREATE, &zc);
3034 -
3035 - zcmd_free_nvlists(&zc);
3008 + ret = lzc_create(path, ost, props);
3009 + nvlist_free(props);
3036 3010
3037 3011 /* check for failure */
3038 3012 if (ret != 0) {
3039 3013 char parent[ZFS_MAXNAMELEN];
3040 3014 (void) parent_name(path, parent, sizeof (parent));
3041 3015
3042 3016 switch (errno) {
3043 3017 case ENOENT:
3044 3018 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3045 3019 "no such parent '%s'"), parent);
3046 3020 return (zfs_error(hdl, EZFS_NOENT, errbuf));
3047 3021
3048 3022 case EINVAL:
3049 3023 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3050 3024 "parent '%s' is not a filesystem"), parent);
3051 3025 return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
3052 3026
3053 3027 case EDOM:
3054 3028 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3055 3029 "volume block size must be power of 2 from "
3056 3030 "%u to %uk"),
3057 3031 (uint_t)SPA_MINBLOCKSIZE,
3058 3032 (uint_t)SPA_MAXBLOCKSIZE >> 10);
3059 3033
3060 3034 return (zfs_error(hdl, EZFS_BADPROP, errbuf));
3061 3035
3062 3036 case ENOTSUP:
3063 3037 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3064 3038 "pool must be upgraded to set this "
3065 3039 "property or value"));
3066 3040 return (zfs_error(hdl, EZFS_BADVERSION, errbuf));
3067 3041 #ifdef _ILP32
3068 3042 case EOVERFLOW:
3069 3043 /*
3070 3044 * This platform can't address a volume this big.
3071 3045 */
3072 3046 if (type == ZFS_TYPE_VOLUME)
3073 3047 return (zfs_error(hdl, EZFS_VOLTOOBIG,
3074 3048 errbuf));
3075 3049 #endif
3076 3050 /* FALLTHROUGH */
3077 3051 default:
3078 3052 return (zfs_standard_error(hdl, errno, errbuf));
3079 3053 }
3080 3054 }
3081 3055
3082 3056 return (0);
3083 3057 }
3084 3058
3085 3059 /*
3086 3060 * Destroys the given dataset. The caller must make sure that the filesystem
3087 3061 * isn't mounted, and that there are no active dependents.
3088 3062 */
3089 3063 int
3090 3064 zfs_destroy(zfs_handle_t *zhp, boolean_t defer)
3091 3065 {
3092 3066 zfs_cmd_t zc = { 0 };
3093 3067
3094 3068 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3095 3069
3096 3070 if (ZFS_IS_VOLUME(zhp)) {
3097 3071 zc.zc_objset_type = DMU_OST_ZVOL;
3098 3072 } else {
3099 3073 zc.zc_objset_type = DMU_OST_ZFS;
3100 3074 }
3101 3075
3102 3076 zc.zc_defer_destroy = defer;
3103 3077 if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0) {
3104 3078 return (zfs_standard_error_fmt(zhp->zfs_hdl, errno,
3105 3079 dgettext(TEXT_DOMAIN, "cannot destroy '%s'"),
3106 3080 zhp->zfs_name));
3107 3081 }
3108 3082
3109 3083 remove_mountpoint(zhp);
3110 3084
3111 3085 return (0);
3112 3086 }
3113 3087
3114 3088 struct destroydata {
3115 3089 nvlist_t *nvl;
3116 3090 const char *snapname;
3117 3091 };
3118 3092
3119 3093 static int
3120 3094 zfs_check_snap_cb(zfs_handle_t *zhp, void *arg)
3121 3095 {
3122 3096 struct destroydata *dd = arg;
3123 3097 zfs_handle_t *szhp;
3124 3098 char name[ZFS_MAXNAMELEN];
3125 3099 int rv = 0;
3126 3100
3127 3101 (void) snprintf(name, sizeof (name),
3128 3102 "%s@%s", zhp->zfs_name, dd->snapname);
3129 3103
3130 3104 szhp = make_dataset_handle(zhp->zfs_hdl, name);
3131 3105 if (szhp) {
3132 3106 verify(nvlist_add_boolean(dd->nvl, name) == 0);
3133 3107 zfs_close(szhp);
3134 3108 }
3135 3109
3136 3110 rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd);
3137 3111 zfs_close(zhp);
3138 3112 return (rv);
3139 3113 }
3140 3114
3141 3115 /*
3142 3116 * Destroys all snapshots with the given name in zhp & descendants.
3143 3117 */
3144 3118 int
3145 3119 zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer)
3146 3120 {
3147 3121 int ret;
3148 3122 struct destroydata dd = { 0 };
3149 3123
3150 3124 dd.snapname = snapname;
3151 3125 verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0);
3152 3126 (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd);
3153 3127
3154 3128 if (nvlist_next_nvpair(dd.nvl, NULL) == NULL) {
3155 3129 ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT,
3156 3130 dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"),
3157 3131 zhp->zfs_name, snapname);
3158 3132 } else {
3159 3133 ret = zfs_destroy_snaps_nvl(zhp, dd.nvl, defer);
3160 3134 }
3161 3135 nvlist_free(dd.nvl);
3162 3136 return (ret);
|
↓ open down ↓ |
117 lines elided |
↑ open up ↑ |
3163 3137 }
3164 3138
3165 3139 /*
3166 3140 * Destroys all the snapshots named in the nvlist. They must be underneath
3167 3141 * the zhp (either snapshots of it, or snapshots of its descendants).
3168 3142 */
3169 3143 int
3170 3144 zfs_destroy_snaps_nvl(zfs_handle_t *zhp, nvlist_t *snaps, boolean_t defer)
3171 3145 {
3172 3146 int ret;
3173 - zfs_cmd_t zc = { 0 };
3147 + nvlist_t *errlist;
3174 3148
3175 - (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3176 - if (zcmd_write_src_nvlist(zhp->zfs_hdl, &zc, snaps) != 0)
3177 - return (-1);
3178 - zc.zc_defer_destroy = defer;
3149 + ret = lzc_destroy_snaps(snaps, defer, &errlist);
3179 3150
3180 - ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY_SNAPS_NVL, &zc);
3181 3151 if (ret != 0) {
3182 - char errbuf[1024];
3183 -
3184 - (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3185 - "cannot destroy snapshots in %s"), zc.zc_name);
3186 -
3187 - switch (errno) {
3188 - case EEXIST:
3189 - zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
3190 - "snapshot is cloned"));
3191 - return (zfs_error(zhp->zfs_hdl, EZFS_EXISTS, errbuf));
3152 + for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL);
3153 + pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) {
3154 + char errbuf[1024];
3155 + (void) snprintf(errbuf, sizeof (errbuf),
3156 + dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"),
3157 + nvpair_name(pair));
3192 3158
3193 - default:
3194 - return (zfs_standard_error(zhp->zfs_hdl, errno,
3195 - errbuf));
3159 + switch (fnvpair_value_int32(pair)) {
3160 + case EEXIST:
3161 + zfs_error_aux(zhp->zfs_hdl,
3162 + dgettext(TEXT_DOMAIN,
3163 + "snapshot is cloned"));
3164 + ret = zfs_error(zhp->zfs_hdl, EZFS_EXISTS,
3165 + errbuf);
3166 + break;
3167 + default:
3168 + ret = zfs_standard_error(zhp->zfs_hdl, errno,
3169 + errbuf);
3170 + break;
3171 + }
3196 3172 }
3197 3173 }
3198 3174
3199 - return (0);
3175 + return (ret);
3200 3176 }
3201 3177
3202 3178 /*
3203 3179 * Clones the given dataset. The target must be of the same type as the source.
3204 3180 */
3205 3181 int
3206 3182 zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props)
3207 3183 {
3208 - zfs_cmd_t zc = { 0 };
3209 3184 char parent[ZFS_MAXNAMELEN];
3210 3185 int ret;
3211 3186 char errbuf[1024];
3212 3187 libzfs_handle_t *hdl = zhp->zfs_hdl;
3213 - zfs_type_t type;
3214 3188 uint64_t zoned;
3215 3189
3216 3190 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
3217 3191
3218 3192 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3219 3193 "cannot create '%s'"), target);
3220 3194
3221 3195 /* validate the target/clone name */
3222 3196 if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE))
3223 3197 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3224 3198
3225 3199 /* validate parents exist */
3226 3200 if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0)
3227 3201 return (-1);
3228 3202
3229 3203 (void) parent_name(target, parent, sizeof (parent));
3230 3204
3231 3205 /* do the clone */
3232 - if (ZFS_IS_VOLUME(zhp)) {
3233 - zc.zc_objset_type = DMU_OST_ZVOL;
3234 - type = ZFS_TYPE_VOLUME;
3235 - } else {
3236 - zc.zc_objset_type = DMU_OST_ZFS;
3237 - type = ZFS_TYPE_FILESYSTEM;
3238 - }
3239 3206
3240 3207 if (props) {
3208 + zfs_type_t type;
3209 + if (ZFS_IS_VOLUME(zhp)) {
3210 + type = ZFS_TYPE_VOLUME;
3211 + } else {
3212 + type = ZFS_TYPE_FILESYSTEM;
3213 + }
3241 3214 if ((props = zfs_valid_proplist(hdl, type, props, zoned,
3242 3215 zhp, errbuf)) == NULL)
3243 3216 return (-1);
3244 -
3245 - if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) {
3246 - nvlist_free(props);
3247 - return (-1);
3248 - }
3249 -
3250 - nvlist_free(props);
3251 3217 }
3252 3218
3253 - (void) strlcpy(zc.zc_name, target, sizeof (zc.zc_name));
3254 - (void) strlcpy(zc.zc_value, zhp->zfs_name, sizeof (zc.zc_value));
3255 - ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_CREATE, &zc);
3256 -
3257 - zcmd_free_nvlists(&zc);
3219 + ret = lzc_clone(target, zhp->zfs_name, props);
3220 + nvlist_free(props);
3258 3221
3259 3222 if (ret != 0) {
3260 3223 switch (errno) {
3261 3224
3262 3225 case ENOENT:
3263 3226 /*
3264 3227 * The parent doesn't exist. We should have caught this
3265 3228 * above, but there may a race condition that has since
3266 3229 * destroyed the parent.
3267 3230 *
3268 3231 * At this point, we don't know whether it's the source
3269 3232 * that doesn't exist anymore, or whether the target
3270 3233 * dataset doesn't exist.
3271 3234 */
3272 3235 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
3273 3236 "no such parent '%s'"), parent);
3274 3237 return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf));
3275 3238
3276 3239 case EXDEV:
3277 3240 zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
3278 3241 "source and target pools differ"));
3279 3242 return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET,
3280 3243 errbuf));
3281 3244
3282 3245 default:
3283 3246 return (zfs_standard_error(zhp->zfs_hdl, errno,
3284 3247 errbuf));
3285 3248 }
3286 3249 }
3287 3250
3288 3251 return (ret);
3289 3252 }
3290 3253
3291 3254 /*
3292 3255 * Promotes the given clone fs to be the clone parent.
3293 3256 */
3294 3257 int
3295 3258 zfs_promote(zfs_handle_t *zhp)
3296 3259 {
3297 3260 libzfs_handle_t *hdl = zhp->zfs_hdl;
3298 3261 zfs_cmd_t zc = { 0 };
3299 3262 char parent[MAXPATHLEN];
3300 3263 int ret;
3301 3264 char errbuf[1024];
3302 3265
3303 3266 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3304 3267 "cannot promote '%s'"), zhp->zfs_name);
3305 3268
3306 3269 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
3307 3270 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3308 3271 "snapshots can not be promoted"));
3309 3272 return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
3310 3273 }
3311 3274
3312 3275 (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent));
3313 3276 if (parent[0] == '\0') {
3314 3277 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3315 3278 "not a cloned filesystem"));
3316 3279 return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
3317 3280 }
3318 3281
3319 3282 (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin,
3320 3283 sizeof (zc.zc_value));
3321 3284 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3322 3285 ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc);
3323 3286
3324 3287 if (ret != 0) {
3325 3288 int save_errno = errno;
3326 3289
3327 3290 switch (save_errno) {
3328 3291 case EEXIST:
3329 3292 /* There is a conflicting snapshot name. */
3330 3293 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3331 3294 "conflicting snapshot '%s' from parent '%s'"),
|
↓ open down ↓ |
64 lines elided |
↑ open up ↑ |
3332 3295 zc.zc_string, parent);
3333 3296 return (zfs_error(hdl, EZFS_EXISTS, errbuf));
3334 3297
3335 3298 default:
3336 3299 return (zfs_standard_error(hdl, save_errno, errbuf));
3337 3300 }
3338 3301 }
3339 3302 return (ret);
3340 3303 }
3341 3304
3305 +typedef struct snapdata {
3306 + nvlist_t *sd_nvl;
3307 + const char *sd_snapname;
3308 +} snapdata_t;
3309 +
3310 +static int
3311 +zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3312 +{
3313 + snapdata_t *sd = arg;
3314 + char name[ZFS_MAXNAMELEN];
3315 + int rv = 0;
3316 +
3317 + (void) snprintf(name, sizeof (name),
3318 + "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3319 +
3320 + fnvlist_add_boolean(sd->sd_nvl, name);
3321 +
3322 + rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3323 + zfs_close(zhp);
3324 + return (rv);
3325 +}
3326 +
3342 3327 /*
3343 - * Takes a snapshot of the given dataset.
3328 + * Creates snapshots. The keys in the snaps nvlist are the snapshots to be
3329 + * created.
3344 3330 */
3345 3331 int
3346 -zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive,
3347 - nvlist_t *props)
3332 +zfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props)
3348 3333 {
3349 - const char *delim;
3350 - char parent[ZFS_MAXNAMELEN];
3351 - zfs_handle_t *zhp;
3352 - zfs_cmd_t zc = { 0 };
3353 3334 int ret;
3354 3335 char errbuf[1024];
3336 + nvpair_t *elem;
3337 + nvlist_t *errors;
3355 3338
3356 3339 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3357 - "cannot snapshot '%s'"), path);
3340 + "cannot create snapshots "));
3358 3341
3359 - /* validate the target name */
3360 - if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE))
3361 - return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3342 + elem = NULL;
3343 + while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) {
3344 + const char *snapname = nvpair_name(elem);
3345 +
3346 + /* validate the target name */
3347 + if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT,
3348 + B_TRUE)) {
3349 + (void) snprintf(errbuf, sizeof (errbuf),
3350 + dgettext(TEXT_DOMAIN,
3351 + "cannot create snapshot '%s'"), snapname);
3352 + return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3353 + }
3354 + }
3362 3355
3363 - if (props) {
3364 - if ((props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT,
3365 - props, B_FALSE, NULL, errbuf)) == NULL)
3366 - return (-1);
3356 + if (props != NULL &&
3357 + (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT,
3358 + props, B_FALSE, NULL, errbuf)) == NULL) {
3359 + return (-1);
3360 + }
3367 3361
3368 - if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) {
3369 - nvlist_free(props);
3370 - return (-1);
3371 - }
3362 + ret = lzc_snapshot(snaps, props, &errors);
3363 +
3364 + if (ret != 0) {
3365 + boolean_t printed = B_FALSE;
3366 + for (elem = nvlist_next_nvpair(errors, NULL);
3367 + elem != NULL;
3368 + elem = nvlist_next_nvpair(errors, elem)) {
3369 + (void) snprintf(errbuf, sizeof (errbuf),
3370 + dgettext(TEXT_DOMAIN,
3371 + "cannot create snapshot '%s'"), nvpair_name(elem));
3372 + (void) zfs_standard_error(hdl,
3373 + fnvpair_value_int32(elem), errbuf);
3374 + printed = B_TRUE;
3375 + }
3376 + if (!printed) {
3377 + switch (ret) {
3378 + case EXDEV:
3379 + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3380 + "multiple snapshots of same "
3381 + "fs not allowed"));
3382 + (void) zfs_error(hdl, EZFS_EXISTS, errbuf);
3372 3383
3373 - nvlist_free(props);
3384 + break;
3385 + default:
3386 + (void) zfs_standard_error(hdl, ret, errbuf);
3387 + }
3388 + }
3374 3389 }
3375 3390
3376 - /* make sure the parent exists and is of the appropriate type */
3377 - delim = strchr(path, '@');
3378 - (void) strncpy(parent, path, delim - path);
3379 - parent[delim - path] = '\0';
3391 + nvlist_free(props);
3392 + nvlist_free(errors);
3393 + return (ret);
3394 +}
3395 +
3396 +int
3397 +zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive,
3398 + nvlist_t *props)
3399 +{
3400 + int ret;
3401 + snapdata_t sd = { 0 };
3402 + char fsname[ZFS_MAXNAMELEN];
3403 + char *cp;
3404 + zfs_handle_t *zhp;
3405 + char errbuf[1024];
3406 +
3407 + (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3408 + "cannot snapshot %s"), path);
3409 +
3410 + if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE))
3411 + return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3380 3412
3381 - if ((zhp = zfs_open(hdl, parent, ZFS_TYPE_FILESYSTEM |
3413 + (void) strlcpy(fsname, path, sizeof (fsname));
3414 + cp = strchr(fsname, '@');
3415 + *cp = '\0';
3416 + sd.sd_snapname = cp + 1;
3417 +
3418 + if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM |
3382 3419 ZFS_TYPE_VOLUME)) == NULL) {
3383 - zcmd_free_nvlists(&zc);
3384 3420 return (-1);
3385 3421 }
3386 3422
3387 - (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3388 - (void) strlcpy(zc.zc_value, delim+1, sizeof (zc.zc_value));
3389 - if (ZFS_IS_VOLUME(zhp))
3390 - zc.zc_objset_type = DMU_OST_ZVOL;
3391 - else
3392 - zc.zc_objset_type = DMU_OST_ZFS;
3393 - zc.zc_cookie = recursive;
3394 - ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SNAPSHOT, &zc);
3395 -
3396 - zcmd_free_nvlists(&zc);
3397 -
3398 - /*
3399 - * if it was recursive, the one that actually failed will be in
3400 - * zc.zc_name.
3401 - */
3402 - if (ret != 0) {
3403 - (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3404 - "cannot create snapshot '%s@%s'"), zc.zc_name, zc.zc_value);
3405 - (void) zfs_standard_error(hdl, errno, errbuf);
3423 + verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0);
3424 + if (recursive) {
3425 + (void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd);
3426 + } else {
3427 + fnvlist_add_boolean(sd.sd_nvl, path);
3406 3428 }
3407 3429
3430 + ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props);
3431 + nvlist_free(sd.sd_nvl);
3408 3432 zfs_close(zhp);
3409 -
3410 3433 return (ret);
3411 3434 }
3412 3435
3413 3436 /*
3414 3437 * Destroy any more recent snapshots. We invoke this callback on any dependents
3415 3438 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this
3416 3439 * is a dependent and we should just destroy it without checking the transaction
3417 3440 * group.
3418 3441 */
3419 3442 typedef struct rollback_data {
3420 3443 const char *cb_target; /* the snapshot */
3421 3444 uint64_t cb_create; /* creation time reference */
3422 3445 boolean_t cb_error;
3423 3446 boolean_t cb_dependent;
3424 3447 boolean_t cb_force;
3425 3448 } rollback_data_t;
3426 3449
|
↓ open down ↓ |
7 lines elided |
↑ open up ↑ |
3427 3450 static int
3428 3451 rollback_destroy(zfs_handle_t *zhp, void *data)
3429 3452 {
3430 3453 rollback_data_t *cbp = data;
3431 3454
3432 3455 if (!cbp->cb_dependent) {
3433 3456 if (strcmp(zhp->zfs_name, cbp->cb_target) != 0 &&
3434 3457 zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
3435 3458 zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
3436 3459 cbp->cb_create) {
3437 - char *logstr;
3438 3460
3439 3461 cbp->cb_dependent = B_TRUE;
3440 3462 cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE,
3441 3463 rollback_destroy, cbp);
3442 3464 cbp->cb_dependent = B_FALSE;
3443 3465
3444 - logstr = zhp->zfs_hdl->libzfs_log_str;
3445 - zhp->zfs_hdl->libzfs_log_str = NULL;
3446 3466 cbp->cb_error |= zfs_destroy(zhp, B_FALSE);
3447 - zhp->zfs_hdl->libzfs_log_str = logstr;
3448 3467 }
3449 3468 } else {
3450 3469 /* We must destroy this clone; first unmount it */
3451 3470 prop_changelist_t *clp;
3452 3471
3453 3472 clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
3454 3473 cbp->cb_force ? MS_FORCE: 0);
3455 3474 if (clp == NULL || changelist_prefix(clp) != 0) {
3456 3475 cbp->cb_error = B_TRUE;
3457 3476 zfs_close(zhp);
3458 3477 return (0);
3459 3478 }
3460 3479 if (zfs_destroy(zhp, B_FALSE) != 0)
3461 3480 cbp->cb_error = B_TRUE;
3462 3481 else
3463 3482 changelist_remove(clp, zhp->zfs_name);
3464 3483 (void) changelist_postfix(clp);
3465 3484 changelist_free(clp);
3466 3485 }
3467 3486
3468 3487 zfs_close(zhp);
3469 3488 return (0);
3470 3489 }
3471 3490
3472 3491 /*
3473 3492 * Given a dataset, rollback to a specific snapshot, discarding any
3474 3493 * data changes since then and making it the active dataset.
3475 3494 *
3476 3495 * Any snapshots more recent than the target are destroyed, along with
3477 3496 * their dependents.
3478 3497 */
3479 3498 int
3480 3499 zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force)
3481 3500 {
3482 3501 rollback_data_t cb = { 0 };
3483 3502 int err;
3484 3503 zfs_cmd_t zc = { 0 };
3485 3504 boolean_t restore_resv = 0;
3486 3505 uint64_t old_volsize, new_volsize;
3487 3506 zfs_prop_t resv_prop;
3488 3507
3489 3508 assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM ||
3490 3509 zhp->zfs_type == ZFS_TYPE_VOLUME);
3491 3510
3492 3511 /*
3493 3512 * Destroy all recent snapshots and its dependends.
3494 3513 */
3495 3514 cb.cb_force = force;
3496 3515 cb.cb_target = snap->zfs_name;
3497 3516 cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3498 3517 (void) zfs_iter_children(zhp, rollback_destroy, &cb);
3499 3518
3500 3519 if (cb.cb_error)
3501 3520 return (-1);
3502 3521
3503 3522 /*
3504 3523 * Now that we have verified that the snapshot is the latest,
3505 3524 * rollback to the given snapshot.
3506 3525 */
3507 3526
3508 3527 if (zhp->zfs_type == ZFS_TYPE_VOLUME) {
3509 3528 if (zfs_which_resv_prop(zhp, &resv_prop) < 0)
3510 3529 return (-1);
3511 3530 old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
3512 3531 restore_resv =
3513 3532 (old_volsize == zfs_prop_get_int(zhp, resv_prop));
3514 3533 }
3515 3534
3516 3535 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3517 3536
3518 3537 if (ZFS_IS_VOLUME(zhp))
3519 3538 zc.zc_objset_type = DMU_OST_ZVOL;
3520 3539 else
3521 3540 zc.zc_objset_type = DMU_OST_ZFS;
3522 3541
3523 3542 /*
3524 3543 * We rely on zfs_iter_children() to verify that there are no
3525 3544 * newer snapshots for the given dataset. Therefore, we can
3526 3545 * simply pass the name on to the ioctl() call. There is still
3527 3546 * an unlikely race condition where the user has taken a
3528 3547 * snapshot since we verified that this was the most recent.
3529 3548 *
3530 3549 */
3531 3550 if ((err = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_ROLLBACK, &zc)) != 0) {
3532 3551 (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno,
3533 3552 dgettext(TEXT_DOMAIN, "cannot rollback '%s'"),
3534 3553 zhp->zfs_name);
3535 3554 return (err);
3536 3555 }
3537 3556
3538 3557 /*
3539 3558 * For volumes, if the pre-rollback volsize matched the pre-
3540 3559 * rollback reservation and the volsize has changed then set
3541 3560 * the reservation property to the post-rollback volsize.
3542 3561 * Make a new handle since the rollback closed the dataset.
3543 3562 */
3544 3563 if ((zhp->zfs_type == ZFS_TYPE_VOLUME) &&
3545 3564 (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) {
3546 3565 if (restore_resv) {
3547 3566 new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
3548 3567 if (old_volsize != new_volsize)
3549 3568 err = zfs_prop_set_int(zhp, resv_prop,
3550 3569 new_volsize);
3551 3570 }
3552 3571 zfs_close(zhp);
3553 3572 }
3554 3573 return (err);
3555 3574 }
3556 3575
3557 3576 /*
3558 3577 * Renames the given dataset.
3559 3578 */
3560 3579 int
3561 3580 zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive,
3562 3581 boolean_t force_unmount)
3563 3582 {
3564 3583 int ret;
3565 3584 zfs_cmd_t zc = { 0 };
3566 3585 char *delim;
3567 3586 prop_changelist_t *cl = NULL;
3568 3587 zfs_handle_t *zhrp = NULL;
3569 3588 char *parentname = NULL;
3570 3589 char parent[ZFS_MAXNAMELEN];
3571 3590 libzfs_handle_t *hdl = zhp->zfs_hdl;
3572 3591 char errbuf[1024];
3573 3592
3574 3593 /* if we have the same exact name, just return success */
3575 3594 if (strcmp(zhp->zfs_name, target) == 0)
3576 3595 return (0);
3577 3596
3578 3597 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3579 3598 "cannot rename to '%s'"), target);
3580 3599
3581 3600 /*
3582 3601 * Make sure the target name is valid
3583 3602 */
3584 3603 if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
3585 3604 if ((strchr(target, '@') == NULL) ||
3586 3605 *target == '@') {
3587 3606 /*
3588 3607 * Snapshot target name is abbreviated,
3589 3608 * reconstruct full dataset name
3590 3609 */
3591 3610 (void) strlcpy(parent, zhp->zfs_name,
3592 3611 sizeof (parent));
3593 3612 delim = strchr(parent, '@');
3594 3613 if (strchr(target, '@') == NULL)
3595 3614 *(++delim) = '\0';
3596 3615 else
3597 3616 *delim = '\0';
3598 3617 (void) strlcat(parent, target, sizeof (parent));
3599 3618 target = parent;
3600 3619 } else {
3601 3620 /*
3602 3621 * Make sure we're renaming within the same dataset.
3603 3622 */
3604 3623 delim = strchr(target, '@');
3605 3624 if (strncmp(zhp->zfs_name, target, delim - target)
3606 3625 != 0 || zhp->zfs_name[delim - target] != '@') {
3607 3626 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3608 3627 "snapshots must be part of same "
3609 3628 "dataset"));
3610 3629 return (zfs_error(hdl, EZFS_CROSSTARGET,
3611 3630 errbuf));
3612 3631 }
3613 3632 }
3614 3633 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE))
3615 3634 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3616 3635 } else {
3617 3636 if (recursive) {
3618 3637 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3619 3638 "recursive rename must be a snapshot"));
3620 3639 return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
3621 3640 }
3622 3641
3623 3642 if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE))
3624 3643 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3625 3644
3626 3645 /* validate parents */
3627 3646 if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0)
3628 3647 return (-1);
3629 3648
3630 3649 /* make sure we're in the same pool */
3631 3650 verify((delim = strchr(target, '/')) != NULL);
3632 3651 if (strncmp(zhp->zfs_name, target, delim - target) != 0 ||
3633 3652 zhp->zfs_name[delim - target] != '/') {
3634 3653 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3635 3654 "datasets must be within same pool"));
3636 3655 return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf));
3637 3656 }
3638 3657
3639 3658 /* new name cannot be a child of the current dataset name */
3640 3659 if (is_descendant(zhp->zfs_name, target)) {
3641 3660 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3642 3661 "New dataset name cannot be a descendant of "
3643 3662 "current dataset name"));
3644 3663 return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3645 3664 }
3646 3665 }
3647 3666
3648 3667 (void) snprintf(errbuf, sizeof (errbuf),
3649 3668 dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name);
3650 3669
3651 3670 if (getzoneid() == GLOBAL_ZONEID &&
3652 3671 zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) {
3653 3672 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3654 3673 "dataset is used in a non-global zone"));
3655 3674 return (zfs_error(hdl, EZFS_ZONED, errbuf));
3656 3675 }
3657 3676
3658 3677 if (recursive) {
3659 3678
3660 3679 parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name);
3661 3680 if (parentname == NULL) {
3662 3681 ret = -1;
3663 3682 goto error;
3664 3683 }
3665 3684 delim = strchr(parentname, '@');
3666 3685 *delim = '\0';
3667 3686 zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET);
3668 3687 if (zhrp == NULL) {
3669 3688 ret = -1;
3670 3689 goto error;
3671 3690 }
3672 3691
3673 3692 } else {
3674 3693 if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0,
3675 3694 force_unmount ? MS_FORCE : 0)) == NULL)
3676 3695 return (-1);
3677 3696
3678 3697 if (changelist_haszonedchild(cl)) {
3679 3698 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3680 3699 "child dataset with inherited mountpoint is used "
3681 3700 "in a non-global zone"));
3682 3701 (void) zfs_error(hdl, EZFS_ZONED, errbuf);
3683 3702 goto error;
3684 3703 }
3685 3704
3686 3705 if ((ret = changelist_prefix(cl)) != 0)
3687 3706 goto error;
3688 3707 }
3689 3708
3690 3709 if (ZFS_IS_VOLUME(zhp))
3691 3710 zc.zc_objset_type = DMU_OST_ZVOL;
3692 3711 else
3693 3712 zc.zc_objset_type = DMU_OST_ZFS;
3694 3713
3695 3714 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3696 3715 (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value));
3697 3716
3698 3717 zc.zc_cookie = recursive;
3699 3718
3700 3719 if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) {
3701 3720 /*
3702 3721 * if it was recursive, the one that actually failed will
3703 3722 * be in zc.zc_name
3704 3723 */
3705 3724 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3706 3725 "cannot rename '%s'"), zc.zc_name);
3707 3726
3708 3727 if (recursive && errno == EEXIST) {
3709 3728 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3710 3729 "a child dataset already has a snapshot "
3711 3730 "with the new name"));
3712 3731 (void) zfs_error(hdl, EZFS_EXISTS, errbuf);
3713 3732 } else {
3714 3733 (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf);
3715 3734 }
3716 3735
3717 3736 /*
3718 3737 * On failure, we still want to remount any filesystems that
3719 3738 * were previously mounted, so we don't alter the system state.
3720 3739 */
3721 3740 if (!recursive)
3722 3741 (void) changelist_postfix(cl);
3723 3742 } else {
3724 3743 if (!recursive) {
3725 3744 changelist_rename(cl, zfs_get_name(zhp), target);
3726 3745 ret = changelist_postfix(cl);
3727 3746 }
3728 3747 }
3729 3748
3730 3749 error:
3731 3750 if (parentname) {
3732 3751 free(parentname);
3733 3752 }
3734 3753 if (zhrp) {
3735 3754 zfs_close(zhrp);
3736 3755 }
3737 3756 if (cl) {
3738 3757 changelist_free(cl);
3739 3758 }
3740 3759 return (ret);
3741 3760 }
3742 3761
3743 3762 nvlist_t *
3744 3763 zfs_get_user_props(zfs_handle_t *zhp)
3745 3764 {
3746 3765 return (zhp->zfs_user_props);
3747 3766 }
3748 3767
3749 3768 nvlist_t *
3750 3769 zfs_get_recvd_props(zfs_handle_t *zhp)
3751 3770 {
3752 3771 if (zhp->zfs_recvd_props == NULL)
3753 3772 if (get_recvd_props_ioctl(zhp) != 0)
3754 3773 return (NULL);
3755 3774 return (zhp->zfs_recvd_props);
3756 3775 }
3757 3776
3758 3777 /*
3759 3778 * This function is used by 'zfs list' to determine the exact set of columns to
3760 3779 * display, and their maximum widths. This does two main things:
3761 3780 *
3762 3781 * - If this is a list of all properties, then expand the list to include
3763 3782 * all native properties, and set a flag so that for each dataset we look
3764 3783 * for new unique user properties and add them to the list.
3765 3784 *
3766 3785 * - For non fixed-width properties, keep track of the maximum width seen
3767 3786 * so that we can size the column appropriately. If the user has
3768 3787 * requested received property values, we also need to compute the width
3769 3788 * of the RECEIVED column.
3770 3789 */
3771 3790 int
3772 3791 zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received)
3773 3792 {
3774 3793 libzfs_handle_t *hdl = zhp->zfs_hdl;
3775 3794 zprop_list_t *entry;
3776 3795 zprop_list_t **last, **start;
3777 3796 nvlist_t *userprops, *propval;
3778 3797 nvpair_t *elem;
3779 3798 char *strval;
3780 3799 char buf[ZFS_MAXPROPLEN];
3781 3800
3782 3801 if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0)
3783 3802 return (-1);
3784 3803
3785 3804 userprops = zfs_get_user_props(zhp);
3786 3805
3787 3806 entry = *plp;
3788 3807 if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) {
3789 3808 /*
3790 3809 * Go through and add any user properties as necessary. We
3791 3810 * start by incrementing our list pointer to the first
3792 3811 * non-native property.
3793 3812 */
3794 3813 start = plp;
3795 3814 while (*start != NULL) {
3796 3815 if ((*start)->pl_prop == ZPROP_INVAL)
3797 3816 break;
3798 3817 start = &(*start)->pl_next;
3799 3818 }
3800 3819
3801 3820 elem = NULL;
3802 3821 while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) {
3803 3822 /*
3804 3823 * See if we've already found this property in our list.
3805 3824 */
3806 3825 for (last = start; *last != NULL;
3807 3826 last = &(*last)->pl_next) {
3808 3827 if (strcmp((*last)->pl_user_prop,
3809 3828 nvpair_name(elem)) == 0)
3810 3829 break;
3811 3830 }
3812 3831
3813 3832 if (*last == NULL) {
3814 3833 if ((entry = zfs_alloc(hdl,
3815 3834 sizeof (zprop_list_t))) == NULL ||
3816 3835 ((entry->pl_user_prop = zfs_strdup(hdl,
3817 3836 nvpair_name(elem)))) == NULL) {
3818 3837 free(entry);
3819 3838 return (-1);
3820 3839 }
3821 3840
3822 3841 entry->pl_prop = ZPROP_INVAL;
3823 3842 entry->pl_width = strlen(nvpair_name(elem));
3824 3843 entry->pl_all = B_TRUE;
3825 3844 *last = entry;
3826 3845 }
3827 3846 }
3828 3847 }
3829 3848
3830 3849 /*
3831 3850 * Now go through and check the width of any non-fixed columns
3832 3851 */
3833 3852 for (entry = *plp; entry != NULL; entry = entry->pl_next) {
3834 3853 if (entry->pl_fixed)
3835 3854 continue;
3836 3855
3837 3856 if (entry->pl_prop != ZPROP_INVAL) {
3838 3857 if (zfs_prop_get(zhp, entry->pl_prop,
3839 3858 buf, sizeof (buf), NULL, NULL, 0, B_FALSE) == 0) {
3840 3859 if (strlen(buf) > entry->pl_width)
3841 3860 entry->pl_width = strlen(buf);
3842 3861 }
3843 3862 if (received && zfs_prop_get_recvd(zhp,
3844 3863 zfs_prop_to_name(entry->pl_prop),
3845 3864 buf, sizeof (buf), B_FALSE) == 0)
3846 3865 if (strlen(buf) > entry->pl_recvd_width)
3847 3866 entry->pl_recvd_width = strlen(buf);
3848 3867 } else {
3849 3868 if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop,
3850 3869 &propval) == 0) {
3851 3870 verify(nvlist_lookup_string(propval,
3852 3871 ZPROP_VALUE, &strval) == 0);
3853 3872 if (strlen(strval) > entry->pl_width)
3854 3873 entry->pl_width = strlen(strval);
3855 3874 }
3856 3875 if (received && zfs_prop_get_recvd(zhp,
3857 3876 entry->pl_user_prop,
3858 3877 buf, sizeof (buf), B_FALSE) == 0)
3859 3878 if (strlen(buf) > entry->pl_recvd_width)
3860 3879 entry->pl_recvd_width = strlen(buf);
3861 3880 }
3862 3881 }
3863 3882
3864 3883 return (0);
3865 3884 }
3866 3885
3867 3886 int
3868 3887 zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path,
3869 3888 char *resource, void *export, void *sharetab,
3870 3889 int sharemax, zfs_share_op_t operation)
3871 3890 {
3872 3891 zfs_cmd_t zc = { 0 };
3873 3892 int error;
3874 3893
3875 3894 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
3876 3895 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value));
3877 3896 if (resource)
3878 3897 (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string));
3879 3898 zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab;
3880 3899 zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export;
3881 3900 zc.zc_share.z_sharetype = operation;
3882 3901 zc.zc_share.z_sharemax = sharemax;
3883 3902 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc);
3884 3903 return (error);
3885 3904 }
3886 3905
3887 3906 void
3888 3907 zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props)
3889 3908 {
3890 3909 nvpair_t *curr;
3891 3910
3892 3911 /*
3893 3912 * Keep a reference to the props-table against which we prune the
3894 3913 * properties.
3895 3914 */
3896 3915 zhp->zfs_props_table = props;
3897 3916
3898 3917 curr = nvlist_next_nvpair(zhp->zfs_props, NULL);
3899 3918
3900 3919 while (curr) {
3901 3920 zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr));
3902 3921 nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr);
3903 3922
3904 3923 /*
3905 3924 * User properties will result in ZPROP_INVAL, and since we
3906 3925 * only know how to prune standard ZFS properties, we always
3907 3926 * leave these in the list. This can also happen if we
3908 3927 * encounter an unknown DSL property (when running older
3909 3928 * software, for example).
3910 3929 */
3911 3930 if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE)
3912 3931 (void) nvlist_remove(zhp->zfs_props,
3913 3932 nvpair_name(curr), nvpair_type(curr));
3914 3933 curr = next;
3915 3934 }
3916 3935 }
3917 3936
3918 3937 static int
3919 3938 zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path,
3920 3939 zfs_smb_acl_op_t cmd, char *resource1, char *resource2)
3921 3940 {
3922 3941 zfs_cmd_t zc = { 0 };
3923 3942 nvlist_t *nvlist = NULL;
3924 3943 int error;
3925 3944
3926 3945 (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
3927 3946 (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value));
3928 3947 zc.zc_cookie = (uint64_t)cmd;
3929 3948
3930 3949 if (cmd == ZFS_SMB_ACL_RENAME) {
3931 3950 if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) {
3932 3951 (void) no_memory(hdl);
3933 3952 return (NULL);
3934 3953 }
3935 3954 }
3936 3955
3937 3956 switch (cmd) {
3938 3957 case ZFS_SMB_ACL_ADD:
3939 3958 case ZFS_SMB_ACL_REMOVE:
3940 3959 (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string));
3941 3960 break;
3942 3961 case ZFS_SMB_ACL_RENAME:
3943 3962 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC,
3944 3963 resource1) != 0) {
3945 3964 (void) no_memory(hdl);
3946 3965 return (-1);
3947 3966 }
3948 3967 if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET,
3949 3968 resource2) != 0) {
3950 3969 (void) no_memory(hdl);
3951 3970 return (-1);
3952 3971 }
3953 3972 if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) {
3954 3973 nvlist_free(nvlist);
3955 3974 return (-1);
3956 3975 }
3957 3976 break;
3958 3977 case ZFS_SMB_ACL_PURGE:
3959 3978 break;
3960 3979 default:
3961 3980 return (-1);
3962 3981 }
3963 3982 error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc);
3964 3983 if (nvlist)
3965 3984 nvlist_free(nvlist);
3966 3985 return (error);
3967 3986 }
3968 3987
3969 3988 int
3970 3989 zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset,
3971 3990 char *path, char *resource)
3972 3991 {
3973 3992 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD,
3974 3993 resource, NULL));
3975 3994 }
3976 3995
3977 3996 int
3978 3997 zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset,
3979 3998 char *path, char *resource)
3980 3999 {
3981 4000 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE,
3982 4001 resource, NULL));
3983 4002 }
3984 4003
3985 4004 int
3986 4005 zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path)
3987 4006 {
3988 4007 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE,
3989 4008 NULL, NULL));
3990 4009 }
3991 4010
3992 4011 int
3993 4012 zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path,
3994 4013 char *oldname, char *newname)
3995 4014 {
3996 4015 return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME,
3997 4016 oldname, newname));
3998 4017 }
3999 4018
4000 4019 int
4001 4020 zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type,
4002 4021 zfs_userspace_cb_t func, void *arg)
4003 4022 {
4004 4023 zfs_cmd_t zc = { 0 };
4005 4024 int error;
4006 4025 zfs_useracct_t buf[100];
4007 4026
4008 4027 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
4009 4028
4010 4029 zc.zc_objset_type = type;
4011 4030 zc.zc_nvlist_dst = (uintptr_t)buf;
4012 4031
4013 4032 /* CONSTCOND */
4014 4033 while (1) {
4015 4034 zfs_useracct_t *zua = buf;
4016 4035
4017 4036 zc.zc_nvlist_dst_size = sizeof (buf);
4018 4037 error = ioctl(zhp->zfs_hdl->libzfs_fd,
4019 4038 ZFS_IOC_USERSPACE_MANY, &zc);
4020 4039 if (error || zc.zc_nvlist_dst_size == 0)
4021 4040 break;
4022 4041
4023 4042 while (zc.zc_nvlist_dst_size > 0) {
4024 4043 error = func(arg, zua->zu_domain, zua->zu_rid,
4025 4044 zua->zu_space);
4026 4045 if (error != 0)
4027 4046 return (error);
4028 4047 zua++;
4029 4048 zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t);
4030 4049 }
4031 4050 }
4032 4051
4033 4052 return (error);
4034 4053 }
4035 4054
4036 4055 int
4037 4056 zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag,
4038 4057 boolean_t recursive, boolean_t temphold, boolean_t enoent_ok,
4039 4058 int cleanup_fd, uint64_t dsobj, uint64_t createtxg)
4040 4059 {
4041 4060 zfs_cmd_t zc = { 0 };
4042 4061 libzfs_handle_t *hdl = zhp->zfs_hdl;
4043 4062
4044 4063 ASSERT(!recursive || dsobj == 0);
4045 4064
4046 4065 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
4047 4066 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
4048 4067 if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string))
4049 4068 >= sizeof (zc.zc_string))
4050 4069 return (zfs_error(hdl, EZFS_TAGTOOLONG, tag));
4051 4070 zc.zc_cookie = recursive;
4052 4071 zc.zc_temphold = temphold;
4053 4072 zc.zc_cleanup_fd = cleanup_fd;
4054 4073 zc.zc_sendobj = dsobj;
4055 4074 zc.zc_createtxg = createtxg;
4056 4075
4057 4076 if (zfs_ioctl(hdl, ZFS_IOC_HOLD, &zc) != 0) {
4058 4077 char errbuf[ZFS_MAXNAMELEN+32];
4059 4078
4060 4079 /*
4061 4080 * if it was recursive, the one that actually failed will be in
4062 4081 * zc.zc_name.
4063 4082 */
4064 4083 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
4065 4084 "cannot hold '%s@%s'"), zc.zc_name, snapname);
4066 4085 switch (errno) {
4067 4086 case E2BIG:
4068 4087 /*
4069 4088 * Temporary tags wind up having the ds object id
4070 4089 * prepended. So even if we passed the length check
4071 4090 * above, it's still possible for the tag to wind
4072 4091 * up being slightly too long.
4073 4092 */
4074 4093 return (zfs_error(hdl, EZFS_TAGTOOLONG, errbuf));
4075 4094 case ENOTSUP:
4076 4095 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4077 4096 "pool must be upgraded"));
4078 4097 return (zfs_error(hdl, EZFS_BADVERSION, errbuf));
4079 4098 case EINVAL:
4080 4099 return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
4081 4100 case EEXIST:
4082 4101 return (zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf));
4083 4102 case ENOENT:
4084 4103 if (enoent_ok)
4085 4104 return (ENOENT);
4086 4105 /* FALLTHROUGH */
4087 4106 default:
4088 4107 return (zfs_standard_error_fmt(hdl, errno, errbuf));
4089 4108 }
4090 4109 }
4091 4110
4092 4111 return (0);
4093 4112 }
4094 4113
4095 4114 int
4096 4115 zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag,
4097 4116 boolean_t recursive)
4098 4117 {
4099 4118 zfs_cmd_t zc = { 0 };
4100 4119 libzfs_handle_t *hdl = zhp->zfs_hdl;
4101 4120
4102 4121 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
4103 4122 (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
4104 4123 if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string))
4105 4124 >= sizeof (zc.zc_string))
4106 4125 return (zfs_error(hdl, EZFS_TAGTOOLONG, tag));
4107 4126 zc.zc_cookie = recursive;
4108 4127
4109 4128 if (zfs_ioctl(hdl, ZFS_IOC_RELEASE, &zc) != 0) {
4110 4129 char errbuf[ZFS_MAXNAMELEN+32];
4111 4130
4112 4131 /*
4113 4132 * if it was recursive, the one that actually failed will be in
4114 4133 * zc.zc_name.
4115 4134 */
4116 4135 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
4117 4136 "cannot release '%s' from '%s@%s'"), tag, zc.zc_name,
4118 4137 snapname);
4119 4138 switch (errno) {
4120 4139 case ESRCH:
4121 4140 return (zfs_error(hdl, EZFS_REFTAG_RELE, errbuf));
4122 4141 case ENOTSUP:
4123 4142 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4124 4143 "pool must be upgraded"));
4125 4144 return (zfs_error(hdl, EZFS_BADVERSION, errbuf));
4126 4145 case EINVAL:
4127 4146 return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
4128 4147 default:
4129 4148 return (zfs_standard_error_fmt(hdl, errno, errbuf));
4130 4149 }
4131 4150 }
4132 4151
4133 4152 return (0);
4134 4153 }
4135 4154
4136 4155 int
4137 4156 zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl)
4138 4157 {
4139 4158 zfs_cmd_t zc = { 0 };
4140 4159 libzfs_handle_t *hdl = zhp->zfs_hdl;
4141 4160 int nvsz = 2048;
4142 4161 void *nvbuf;
4143 4162 int err = 0;
4144 4163 char errbuf[ZFS_MAXNAMELEN+32];
4145 4164
4146 4165 assert(zhp->zfs_type == ZFS_TYPE_VOLUME ||
4147 4166 zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
4148 4167
4149 4168 tryagain:
4150 4169
4151 4170 nvbuf = malloc(nvsz);
4152 4171 if (nvbuf == NULL) {
4153 4172 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno)));
4154 4173 goto out;
4155 4174 }
4156 4175
4157 4176 zc.zc_nvlist_dst_size = nvsz;
4158 4177 zc.zc_nvlist_dst = (uintptr_t)nvbuf;
4159 4178
4160 4179 (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN);
4161 4180
4162 4181 if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) {
4163 4182 (void) snprintf(errbuf, sizeof (errbuf),
4164 4183 dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"),
4165 4184 zc.zc_name);
4166 4185 switch (errno) {
4167 4186 case ENOMEM:
4168 4187 free(nvbuf);
4169 4188 nvsz = zc.zc_nvlist_dst_size;
4170 4189 goto tryagain;
4171 4190
4172 4191 case ENOTSUP:
4173 4192 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4174 4193 "pool must be upgraded"));
4175 4194 err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
4176 4195 break;
4177 4196 case EINVAL:
4178 4197 err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
4179 4198 break;
4180 4199 case ENOENT:
4181 4200 err = zfs_error(hdl, EZFS_NOENT, errbuf);
4182 4201 break;
4183 4202 default:
4184 4203 err = zfs_standard_error_fmt(hdl, errno, errbuf);
4185 4204 break;
4186 4205 }
4187 4206 } else {
4188 4207 /* success */
4189 4208 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0);
4190 4209 if (rc) {
4191 4210 (void) snprintf(errbuf, sizeof (errbuf), dgettext(
4192 4211 TEXT_DOMAIN, "cannot get permissions on '%s'"),
4193 4212 zc.zc_name);
4194 4213 err = zfs_standard_error_fmt(hdl, rc, errbuf);
4195 4214 }
4196 4215 }
4197 4216
4198 4217 free(nvbuf);
4199 4218 out:
4200 4219 return (err);
4201 4220 }
4202 4221
4203 4222 int
4204 4223 zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl)
4205 4224 {
4206 4225 zfs_cmd_t zc = { 0 };
4207 4226 libzfs_handle_t *hdl = zhp->zfs_hdl;
4208 4227 char *nvbuf;
4209 4228 char errbuf[ZFS_MAXNAMELEN+32];
4210 4229 size_t nvsz;
4211 4230 int err;
4212 4231
4213 4232 assert(zhp->zfs_type == ZFS_TYPE_VOLUME ||
4214 4233 zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
4215 4234
4216 4235 err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE);
4217 4236 assert(err == 0);
4218 4237
4219 4238 nvbuf = malloc(nvsz);
4220 4239
4221 4240 err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0);
4222 4241 assert(err == 0);
4223 4242
4224 4243 zc.zc_nvlist_src_size = nvsz;
4225 4244 zc.zc_nvlist_src = (uintptr_t)nvbuf;
4226 4245 zc.zc_perm_action = un;
4227 4246
4228 4247 (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
4229 4248
4230 4249 if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) {
4231 4250 (void) snprintf(errbuf, sizeof (errbuf),
4232 4251 dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"),
4233 4252 zc.zc_name);
4234 4253 switch (errno) {
4235 4254 case ENOTSUP:
4236 4255 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4237 4256 "pool must be upgraded"));
4238 4257 err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
4239 4258 break;
4240 4259 case EINVAL:
4241 4260 err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
4242 4261 break;
4243 4262 case ENOENT:
4244 4263 err = zfs_error(hdl, EZFS_NOENT, errbuf);
4245 4264 break;
4246 4265 default:
4247 4266 err = zfs_standard_error_fmt(hdl, errno, errbuf);
4248 4267 break;
4249 4268 }
4250 4269 }
4251 4270
4252 4271 free(nvbuf);
4253 4272
4254 4273 return (err);
4255 4274 }
4256 4275
4257 4276 int
4258 4277 zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl)
4259 4278 {
4260 4279 zfs_cmd_t zc = { 0 };
4261 4280 libzfs_handle_t *hdl = zhp->zfs_hdl;
4262 4281 int nvsz = 2048;
4263 4282 void *nvbuf;
4264 4283 int err = 0;
4265 4284 char errbuf[ZFS_MAXNAMELEN+32];
4266 4285
4267 4286 assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
4268 4287
4269 4288 tryagain:
4270 4289
4271 4290 nvbuf = malloc(nvsz);
4272 4291 if (nvbuf == NULL) {
4273 4292 err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno)));
4274 4293 goto out;
4275 4294 }
4276 4295
4277 4296 zc.zc_nvlist_dst_size = nvsz;
4278 4297 zc.zc_nvlist_dst = (uintptr_t)nvbuf;
4279 4298
4280 4299 (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN);
4281 4300
4282 4301 if (zfs_ioctl(hdl, ZFS_IOC_GET_HOLDS, &zc) != 0) {
4283 4302 (void) snprintf(errbuf, sizeof (errbuf),
4284 4303 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"),
4285 4304 zc.zc_name);
4286 4305 switch (errno) {
4287 4306 case ENOMEM:
4288 4307 free(nvbuf);
4289 4308 nvsz = zc.zc_nvlist_dst_size;
4290 4309 goto tryagain;
4291 4310
4292 4311 case ENOTSUP:
4293 4312 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4294 4313 "pool must be upgraded"));
4295 4314 err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
4296 4315 break;
4297 4316 case EINVAL:
4298 4317 err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
4299 4318 break;
4300 4319 case ENOENT:
4301 4320 err = zfs_error(hdl, EZFS_NOENT, errbuf);
4302 4321 break;
4303 4322 default:
4304 4323 err = zfs_standard_error_fmt(hdl, errno, errbuf);
4305 4324 break;
4306 4325 }
4307 4326 } else {
4308 4327 /* success */
4309 4328 int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0);
4310 4329 if (rc) {
4311 4330 (void) snprintf(errbuf, sizeof (errbuf),
4312 4331 dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"),
4313 4332 zc.zc_name);
4314 4333 err = zfs_standard_error_fmt(hdl, rc, errbuf);
4315 4334 }
4316 4335 }
4317 4336
4318 4337 free(nvbuf);
4319 4338 out:
4320 4339 return (err);
4321 4340 }
4322 4341
4323 4342 uint64_t
4324 4343 zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props)
4325 4344 {
4326 4345 uint64_t numdb;
4327 4346 uint64_t nblocks, volblocksize;
4328 4347 int ncopies;
4329 4348 char *strval;
4330 4349
4331 4350 if (nvlist_lookup_string(props,
4332 4351 zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0)
4333 4352 ncopies = atoi(strval);
4334 4353 else
4335 4354 ncopies = 1;
4336 4355 if (nvlist_lookup_uint64(props,
4337 4356 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
4338 4357 &volblocksize) != 0)
4339 4358 volblocksize = ZVOL_DEFAULT_BLOCKSIZE;
4340 4359 nblocks = volsize/volblocksize;
4341 4360 /* start with metadnode L0-L6 */
4342 4361 numdb = 7;
4343 4362 /* calculate number of indirects */
4344 4363 while (nblocks > 1) {
4345 4364 nblocks += DNODES_PER_LEVEL - 1;
4346 4365 nblocks /= DNODES_PER_LEVEL;
4347 4366 numdb += nblocks;
4348 4367 }
4349 4368 numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1);
4350 4369 volsize *= ncopies;
4351 4370 /*
4352 4371 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't
4353 4372 * compressed, but in practice they compress down to about
4354 4373 * 1100 bytes
4355 4374 */
4356 4375 numdb *= 1ULL << DN_MAX_INDBLKSHIFT;
4357 4376 volsize += numdb;
4358 4377 return (volsize);
4359 4378 }
|
↓ open down ↓ |
902 lines elided |
↑ open up ↑ |
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX