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Commit | Line | Data |
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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | /* | |
572e2857 | 23 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
0b7936d5 | 24 | * Copyright (c) 2010 Nexenta Systems, Inc. All rights reserved. |
c7f2d69d | 25 | * Copyright (c) 2012 by Delphix. All rights reserved. |
08b1b21d | 26 | * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved. |
0cee2406 | 27 | * Copyright (c) 2012 Pawel Jakub Dawidek <pawel@dawidek.net>. |
34dc7c2f BB |
28 | */ |
29 | ||
34dc7c2f BB |
30 | #include <ctype.h> |
31 | #include <errno.h> | |
34dc7c2f BB |
32 | #include <libintl.h> |
33 | #include <math.h> | |
34 | #include <stdio.h> | |
35 | #include <stdlib.h> | |
36 | #include <strings.h> | |
37 | #include <unistd.h> | |
38 | #include <stddef.h> | |
39 | #include <zone.h> | |
40 | #include <fcntl.h> | |
41 | #include <sys/mntent.h> | |
34dc7c2f | 42 | #include <sys/mount.h> |
34dc7c2f BB |
43 | #include <priv.h> |
44 | #include <pwd.h> | |
45 | #include <grp.h> | |
46 | #include <stddef.h> | |
47 | #include <ucred.h> | |
be160928 | 48 | #ifdef HAVE_IDMAP |
9babb374 BB |
49 | #include <idmap.h> |
50 | #include <aclutils.h> | |
45d1cae3 | 51 | #include <directory.h> |
be160928 | 52 | #endif /* HAVE_IDMAP */ |
34dc7c2f | 53 | |
428870ff | 54 | #include <sys/dnode.h> |
34dc7c2f BB |
55 | #include <sys/spa.h> |
56 | #include <sys/zap.h> | |
57 | #include <libzfs.h> | |
58 | ||
59 | #include "zfs_namecheck.h" | |
60 | #include "zfs_prop.h" | |
61 | #include "libzfs_impl.h" | |
62 | #include "zfs_deleg.h" | |
63 | ||
d603ed6c | 64 | static int zvol_create_link_common(libzfs_handle_t *, const char *, int); |
9babb374 BB |
65 | static int userquota_propname_decode(const char *propname, boolean_t zoned, |
66 | zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); | |
34dc7c2f BB |
67 | |
68 | /* | |
69 | * Given a single type (not a mask of types), return the type in a human | |
70 | * readable form. | |
71 | */ | |
72 | const char * | |
73 | zfs_type_to_name(zfs_type_t type) | |
74 | { | |
75 | switch (type) { | |
76 | case ZFS_TYPE_FILESYSTEM: | |
77 | return (dgettext(TEXT_DOMAIN, "filesystem")); | |
78 | case ZFS_TYPE_SNAPSHOT: | |
79 | return (dgettext(TEXT_DOMAIN, "snapshot")); | |
80 | case ZFS_TYPE_VOLUME: | |
81 | return (dgettext(TEXT_DOMAIN, "volume")); | |
e75c13c3 BB |
82 | default: |
83 | break; | |
34dc7c2f BB |
84 | } |
85 | ||
86 | return (NULL); | |
87 | } | |
88 | ||
34dc7c2f BB |
89 | /* |
90 | * Validate a ZFS path. This is used even before trying to open the dataset, to | |
9babb374 BB |
91 | * provide a more meaningful error message. We call zfs_error_aux() to |
92 | * explain exactly why the name was not valid. | |
34dc7c2f | 93 | */ |
572e2857 | 94 | int |
34dc7c2f BB |
95 | zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, |
96 | boolean_t modifying) | |
97 | { | |
98 | namecheck_err_t why; | |
99 | char what; | |
100 | ||
0b7936d5 | 101 | (void) zfs_prop_get_table(); |
34dc7c2f BB |
102 | if (dataset_namecheck(path, &why, &what) != 0) { |
103 | if (hdl != NULL) { | |
104 | switch (why) { | |
105 | case NAME_ERR_TOOLONG: | |
106 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
107 | "name is too long")); | |
108 | break; | |
109 | ||
110 | case NAME_ERR_LEADING_SLASH: | |
111 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
112 | "leading slash in name")); | |
113 | break; | |
114 | ||
115 | case NAME_ERR_EMPTY_COMPONENT: | |
116 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
117 | "empty component in name")); | |
118 | break; | |
119 | ||
120 | case NAME_ERR_TRAILING_SLASH: | |
121 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
122 | "trailing slash in name")); | |
123 | break; | |
124 | ||
125 | case NAME_ERR_INVALCHAR: | |
126 | zfs_error_aux(hdl, | |
127 | dgettext(TEXT_DOMAIN, "invalid character " | |
128 | "'%c' in name"), what); | |
129 | break; | |
130 | ||
131 | case NAME_ERR_MULTIPLE_AT: | |
132 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
133 | "multiple '@' delimiters in name")); | |
134 | break; | |
135 | ||
136 | case NAME_ERR_NOLETTER: | |
137 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
138 | "pool doesn't begin with a letter")); | |
139 | break; | |
140 | ||
141 | case NAME_ERR_RESERVED: | |
142 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
143 | "name is reserved")); | |
144 | break; | |
145 | ||
146 | case NAME_ERR_DISKLIKE: | |
147 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
148 | "reserved disk name")); | |
149 | break; | |
e75c13c3 BB |
150 | default: |
151 | break; | |
34dc7c2f BB |
152 | } |
153 | } | |
154 | ||
155 | return (0); | |
156 | } | |
157 | ||
158 | if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { | |
159 | if (hdl != NULL) | |
160 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
161 | "snapshot delimiter '@' in filesystem name")); | |
162 | return (0); | |
163 | } | |
164 | ||
165 | if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { | |
166 | if (hdl != NULL) | |
167 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
168 | "missing '@' delimiter in snapshot name")); | |
169 | return (0); | |
170 | } | |
171 | ||
172 | if (modifying && strchr(path, '%') != NULL) { | |
173 | if (hdl != NULL) | |
174 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
175 | "invalid character %c in name"), '%'); | |
176 | return (0); | |
177 | } | |
178 | ||
179 | return (-1); | |
180 | } | |
181 | ||
182 | int | |
183 | zfs_name_valid(const char *name, zfs_type_t type) | |
184 | { | |
185 | if (type == ZFS_TYPE_POOL) | |
186 | return (zpool_name_valid(NULL, B_FALSE, name)); | |
187 | return (zfs_validate_name(NULL, name, type, B_FALSE)); | |
188 | } | |
189 | ||
190 | /* | |
191 | * This function takes the raw DSL properties, and filters out the user-defined | |
192 | * properties into a separate nvlist. | |
193 | */ | |
194 | static nvlist_t * | |
195 | process_user_props(zfs_handle_t *zhp, nvlist_t *props) | |
196 | { | |
197 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
198 | nvpair_t *elem; | |
199 | nvlist_t *propval; | |
200 | nvlist_t *nvl; | |
201 | ||
202 | if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { | |
203 | (void) no_memory(hdl); | |
204 | return (NULL); | |
205 | } | |
206 | ||
207 | elem = NULL; | |
208 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
209 | if (!zfs_prop_user(nvpair_name(elem))) | |
210 | continue; | |
211 | ||
212 | verify(nvpair_value_nvlist(elem, &propval) == 0); | |
213 | if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { | |
214 | nvlist_free(nvl); | |
215 | (void) no_memory(hdl); | |
216 | return (NULL); | |
217 | } | |
218 | } | |
219 | ||
220 | return (nvl); | |
221 | } | |
222 | ||
b128c09f BB |
223 | static zpool_handle_t * |
224 | zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) | |
225 | { | |
226 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
227 | zpool_handle_t *zph; | |
228 | ||
229 | if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { | |
230 | if (hdl->libzfs_pool_handles != NULL) | |
231 | zph->zpool_next = hdl->libzfs_pool_handles; | |
232 | hdl->libzfs_pool_handles = zph; | |
233 | } | |
234 | return (zph); | |
235 | } | |
236 | ||
237 | static zpool_handle_t * | |
238 | zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) | |
239 | { | |
240 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
241 | zpool_handle_t *zph = hdl->libzfs_pool_handles; | |
242 | ||
243 | while ((zph != NULL) && | |
244 | (strncmp(pool_name, zpool_get_name(zph), len) != 0)) | |
245 | zph = zph->zpool_next; | |
246 | return (zph); | |
247 | } | |
248 | ||
249 | /* | |
250 | * Returns a handle to the pool that contains the provided dataset. | |
251 | * If a handle to that pool already exists then that handle is returned. | |
252 | * Otherwise, a new handle is created and added to the list of handles. | |
253 | */ | |
254 | static zpool_handle_t * | |
255 | zpool_handle(zfs_handle_t *zhp) | |
256 | { | |
257 | char *pool_name; | |
258 | int len; | |
259 | zpool_handle_t *zph; | |
260 | ||
261 | len = strcspn(zhp->zfs_name, "/@") + 1; | |
262 | pool_name = zfs_alloc(zhp->zfs_hdl, len); | |
263 | (void) strlcpy(pool_name, zhp->zfs_name, len); | |
264 | ||
265 | zph = zpool_find_handle(zhp, pool_name, len); | |
266 | if (zph == NULL) | |
267 | zph = zpool_add_handle(zhp, pool_name); | |
268 | ||
269 | free(pool_name); | |
270 | return (zph); | |
271 | } | |
272 | ||
273 | void | |
274 | zpool_free_handles(libzfs_handle_t *hdl) | |
275 | { | |
276 | zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; | |
277 | ||
278 | while (zph != NULL) { | |
279 | next = zph->zpool_next; | |
280 | zpool_close(zph); | |
281 | zph = next; | |
282 | } | |
283 | hdl->libzfs_pool_handles = NULL; | |
284 | } | |
285 | ||
34dc7c2f BB |
286 | /* |
287 | * Utility function to gather stats (objset and zpl) for the given object. | |
288 | */ | |
289 | static int | |
fb5f0bc8 | 290 | get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) |
34dc7c2f | 291 | { |
34dc7c2f | 292 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
34dc7c2f | 293 | |
fb5f0bc8 | 294 | (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); |
34dc7c2f | 295 | |
fb5f0bc8 | 296 | while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { |
34dc7c2f | 297 | if (errno == ENOMEM) { |
fb5f0bc8 | 298 | if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { |
34dc7c2f BB |
299 | return (-1); |
300 | } | |
301 | } else { | |
34dc7c2f BB |
302 | return (-1); |
303 | } | |
304 | } | |
fb5f0bc8 BB |
305 | return (0); |
306 | } | |
34dc7c2f | 307 | |
428870ff BB |
308 | /* |
309 | * Utility function to get the received properties of the given object. | |
310 | */ | |
311 | static int | |
312 | get_recvd_props_ioctl(zfs_handle_t *zhp) | |
313 | { | |
314 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
315 | nvlist_t *recvdprops; | |
2598c001 | 316 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
428870ff BB |
317 | int err; |
318 | ||
319 | if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) | |
320 | return (-1); | |
321 | ||
322 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
323 | ||
324 | while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { | |
325 | if (errno == ENOMEM) { | |
326 | if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { | |
327 | return (-1); | |
328 | } | |
329 | } else { | |
330 | zcmd_free_nvlists(&zc); | |
331 | return (-1); | |
332 | } | |
333 | } | |
334 | ||
335 | err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); | |
336 | zcmd_free_nvlists(&zc); | |
337 | if (err != 0) | |
338 | return (-1); | |
339 | ||
340 | nvlist_free(zhp->zfs_recvd_props); | |
341 | zhp->zfs_recvd_props = recvdprops; | |
342 | ||
343 | return (0); | |
344 | } | |
345 | ||
fb5f0bc8 BB |
346 | static int |
347 | put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) | |
348 | { | |
349 | nvlist_t *allprops, *userprops; | |
34dc7c2f | 350 | |
fb5f0bc8 BB |
351 | zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ |
352 | ||
353 | if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { | |
34dc7c2f BB |
354 | return (-1); |
355 | } | |
356 | ||
9babb374 BB |
357 | /* |
358 | * XXX Why do we store the user props separately, in addition to | |
359 | * storing them in zfs_props? | |
360 | */ | |
34dc7c2f BB |
361 | if ((userprops = process_user_props(zhp, allprops)) == NULL) { |
362 | nvlist_free(allprops); | |
363 | return (-1); | |
364 | } | |
365 | ||
366 | nvlist_free(zhp->zfs_props); | |
367 | nvlist_free(zhp->zfs_user_props); | |
368 | ||
369 | zhp->zfs_props = allprops; | |
370 | zhp->zfs_user_props = userprops; | |
371 | ||
372 | return (0); | |
373 | } | |
374 | ||
fb5f0bc8 BB |
375 | static int |
376 | get_stats(zfs_handle_t *zhp) | |
377 | { | |
378 | int rc = 0; | |
2598c001 | 379 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
fb5f0bc8 BB |
380 | |
381 | if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) | |
382 | return (-1); | |
383 | if (get_stats_ioctl(zhp, &zc) != 0) | |
384 | rc = -1; | |
385 | else if (put_stats_zhdl(zhp, &zc) != 0) | |
386 | rc = -1; | |
387 | zcmd_free_nvlists(&zc); | |
388 | return (rc); | |
389 | } | |
390 | ||
34dc7c2f BB |
391 | /* |
392 | * Refresh the properties currently stored in the handle. | |
393 | */ | |
394 | void | |
395 | zfs_refresh_properties(zfs_handle_t *zhp) | |
396 | { | |
397 | (void) get_stats(zhp); | |
398 | } | |
399 | ||
400 | /* | |
401 | * Makes a handle from the given dataset name. Used by zfs_open() and | |
402 | * zfs_iter_* to create child handles on the fly. | |
403 | */ | |
fb5f0bc8 BB |
404 | static int |
405 | make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) | |
34dc7c2f | 406 | { |
428870ff | 407 | if (put_stats_zhdl(zhp, zc) != 0) |
fb5f0bc8 | 408 | return (-1); |
34dc7c2f BB |
409 | |
410 | /* | |
411 | * We've managed to open the dataset and gather statistics. Determine | |
412 | * the high-level type. | |
413 | */ | |
414 | if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) | |
415 | zhp->zfs_head_type = ZFS_TYPE_VOLUME; | |
416 | else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) | |
417 | zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; | |
ff998d80 PS |
418 | else if (zhp->zfs_dmustats.dds_type == DMU_OST_OTHER) |
419 | return (-1); /* zpios' and other testing datasets are | |
420 | of this type, ignore if encountered */ | |
34dc7c2f BB |
421 | else |
422 | abort(); | |
423 | ||
424 | if (zhp->zfs_dmustats.dds_is_snapshot) | |
425 | zhp->zfs_type = ZFS_TYPE_SNAPSHOT; | |
426 | else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) | |
427 | zhp->zfs_type = ZFS_TYPE_VOLUME; | |
428 | else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) | |
429 | zhp->zfs_type = ZFS_TYPE_FILESYSTEM; | |
430 | else | |
431 | abort(); /* we should never see any other types */ | |
432 | ||
428870ff BB |
433 | if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) |
434 | return (-1); | |
435 | ||
fb5f0bc8 BB |
436 | return (0); |
437 | } | |
438 | ||
439 | zfs_handle_t * | |
440 | make_dataset_handle(libzfs_handle_t *hdl, const char *path) | |
441 | { | |
2598c001 | 442 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
fb5f0bc8 BB |
443 | |
444 | zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); | |
445 | ||
446 | if (zhp == NULL) | |
447 | return (NULL); | |
448 | ||
449 | zhp->zfs_hdl = hdl; | |
450 | (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); | |
451 | if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { | |
452 | free(zhp); | |
453 | return (NULL); | |
454 | } | |
455 | if (get_stats_ioctl(zhp, &zc) == -1) { | |
456 | zcmd_free_nvlists(&zc); | |
457 | free(zhp); | |
458 | return (NULL); | |
459 | } | |
460 | if (make_dataset_handle_common(zhp, &zc) == -1) { | |
461 | free(zhp); | |
462 | zhp = NULL; | |
463 | } | |
464 | zcmd_free_nvlists(&zc); | |
465 | return (zhp); | |
466 | } | |
467 | ||
330d06f9 | 468 | zfs_handle_t * |
fb5f0bc8 BB |
469 | make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) |
470 | { | |
471 | zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); | |
472 | ||
473 | if (zhp == NULL) | |
474 | return (NULL); | |
475 | ||
476 | zhp->zfs_hdl = hdl; | |
477 | (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); | |
478 | if (make_dataset_handle_common(zhp, zc) == -1) { | |
479 | free(zhp); | |
480 | return (NULL); | |
481 | } | |
34dc7c2f BB |
482 | return (zhp); |
483 | } | |
484 | ||
330d06f9 | 485 | zfs_handle_t * |
0cee2406 PJD |
486 | make_dataset_simple_handle_zc(zfs_handle_t *pzhp, zfs_cmd_t *zc) |
487 | { | |
488 | zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); | |
489 | ||
490 | if (zhp == NULL) | |
491 | return (NULL); | |
492 | ||
493 | zhp->zfs_hdl = pzhp->zfs_hdl; | |
494 | (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); | |
495 | zhp->zfs_head_type = pzhp->zfs_type; | |
496 | zhp->zfs_type = ZFS_TYPE_SNAPSHOT; | |
497 | zhp->zpool_hdl = zpool_handle(zhp); | |
498 | ||
499 | return (zhp); | |
500 | } | |
501 | ||
330d06f9 MA |
502 | zfs_handle_t * |
503 | zfs_handle_dup(zfs_handle_t *zhp_orig) | |
504 | { | |
505 | zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); | |
506 | ||
507 | if (zhp == NULL) | |
508 | return (NULL); | |
509 | ||
510 | zhp->zfs_hdl = zhp_orig->zfs_hdl; | |
511 | zhp->zpool_hdl = zhp_orig->zpool_hdl; | |
512 | (void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name, | |
513 | sizeof (zhp->zfs_name)); | |
514 | zhp->zfs_type = zhp_orig->zfs_type; | |
515 | zhp->zfs_head_type = zhp_orig->zfs_head_type; | |
516 | zhp->zfs_dmustats = zhp_orig->zfs_dmustats; | |
517 | if (zhp_orig->zfs_props != NULL) { | |
518 | if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) { | |
519 | (void) no_memory(zhp->zfs_hdl); | |
520 | zfs_close(zhp); | |
521 | return (NULL); | |
522 | } | |
523 | } | |
524 | if (zhp_orig->zfs_user_props != NULL) { | |
525 | if (nvlist_dup(zhp_orig->zfs_user_props, | |
526 | &zhp->zfs_user_props, 0) != 0) { | |
527 | (void) no_memory(zhp->zfs_hdl); | |
528 | zfs_close(zhp); | |
529 | return (NULL); | |
530 | } | |
531 | } | |
532 | if (zhp_orig->zfs_recvd_props != NULL) { | |
533 | if (nvlist_dup(zhp_orig->zfs_recvd_props, | |
534 | &zhp->zfs_recvd_props, 0)) { | |
535 | (void) no_memory(zhp->zfs_hdl); | |
536 | zfs_close(zhp); | |
537 | return (NULL); | |
538 | } | |
539 | } | |
540 | zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck; | |
541 | if (zhp_orig->zfs_mntopts != NULL) { | |
542 | zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl, | |
543 | zhp_orig->zfs_mntopts); | |
544 | } | |
545 | zhp->zfs_props_table = zhp_orig->zfs_props_table; | |
546 | return (zhp); | |
547 | } | |
548 | ||
34dc7c2f BB |
549 | /* |
550 | * Opens the given snapshot, filesystem, or volume. The 'types' | |
551 | * argument is a mask of acceptable types. The function will print an | |
552 | * appropriate error message and return NULL if it can't be opened. | |
553 | */ | |
554 | zfs_handle_t * | |
555 | zfs_open(libzfs_handle_t *hdl, const char *path, int types) | |
556 | { | |
557 | zfs_handle_t *zhp; | |
558 | char errbuf[1024]; | |
559 | ||
560 | (void) snprintf(errbuf, sizeof (errbuf), | |
561 | dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); | |
562 | ||
563 | /* | |
564 | * Validate the name before we even try to open it. | |
565 | */ | |
566 | if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { | |
567 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
568 | "invalid dataset name")); | |
569 | (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); | |
570 | return (NULL); | |
571 | } | |
572 | ||
573 | /* | |
574 | * Try to get stats for the dataset, which will tell us if it exists. | |
575 | */ | |
576 | errno = 0; | |
577 | if ((zhp = make_dataset_handle(hdl, path)) == NULL) { | |
578 | (void) zfs_standard_error(hdl, errno, errbuf); | |
579 | return (NULL); | |
580 | } | |
581 | ||
582 | if (!(types & zhp->zfs_type)) { | |
583 | (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); | |
584 | zfs_close(zhp); | |
585 | return (NULL); | |
586 | } | |
587 | ||
588 | return (zhp); | |
589 | } | |
590 | ||
591 | /* | |
592 | * Release a ZFS handle. Nothing to do but free the associated memory. | |
593 | */ | |
594 | void | |
595 | zfs_close(zfs_handle_t *zhp) | |
596 | { | |
597 | if (zhp->zfs_mntopts) | |
598 | free(zhp->zfs_mntopts); | |
599 | nvlist_free(zhp->zfs_props); | |
600 | nvlist_free(zhp->zfs_user_props); | |
428870ff | 601 | nvlist_free(zhp->zfs_recvd_props); |
34dc7c2f BB |
602 | free(zhp); |
603 | } | |
604 | ||
fb5f0bc8 BB |
605 | typedef struct mnttab_node { |
606 | struct mnttab mtn_mt; | |
607 | avl_node_t mtn_node; | |
608 | } mnttab_node_t; | |
609 | ||
610 | static int | |
611 | libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) | |
612 | { | |
613 | const mnttab_node_t *mtn1 = arg1; | |
614 | const mnttab_node_t *mtn2 = arg2; | |
615 | int rv; | |
616 | ||
617 | rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); | |
618 | ||
619 | if (rv == 0) | |
620 | return (0); | |
621 | return (rv > 0 ? 1 : -1); | |
622 | } | |
623 | ||
624 | void | |
625 | libzfs_mnttab_init(libzfs_handle_t *hdl) | |
626 | { | |
fb5f0bc8 BB |
627 | assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); |
628 | avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, | |
629 | sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); | |
9babb374 BB |
630 | } |
631 | ||
632 | void | |
633 | libzfs_mnttab_update(libzfs_handle_t *hdl) | |
634 | { | |
635 | struct mnttab entry; | |
fb5f0bc8 BB |
636 | |
637 | rewind(hdl->libzfs_mnttab); | |
638 | while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { | |
639 | mnttab_node_t *mtn; | |
640 | ||
641 | if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) | |
642 | continue; | |
643 | mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); | |
644 | mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); | |
645 | mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); | |
646 | mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); | |
647 | mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); | |
648 | avl_add(&hdl->libzfs_mnttab_cache, mtn); | |
649 | } | |
650 | } | |
651 | ||
652 | void | |
653 | libzfs_mnttab_fini(libzfs_handle_t *hdl) | |
654 | { | |
655 | void *cookie = NULL; | |
656 | mnttab_node_t *mtn; | |
657 | ||
c65aa5b2 | 658 | while ((mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie))) { |
fb5f0bc8 BB |
659 | free(mtn->mtn_mt.mnt_special); |
660 | free(mtn->mtn_mt.mnt_mountp); | |
661 | free(mtn->mtn_mt.mnt_fstype); | |
662 | free(mtn->mtn_mt.mnt_mntopts); | |
663 | free(mtn); | |
664 | } | |
665 | avl_destroy(&hdl->libzfs_mnttab_cache); | |
666 | } | |
667 | ||
9babb374 BB |
668 | void |
669 | libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) | |
670 | { | |
671 | hdl->libzfs_mnttab_enable = enable; | |
672 | } | |
673 | ||
fb5f0bc8 BB |
674 | int |
675 | libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, | |
676 | struct mnttab *entry) | |
677 | { | |
678 | mnttab_node_t find; | |
679 | mnttab_node_t *mtn; | |
680 | ||
9babb374 BB |
681 | if (!hdl->libzfs_mnttab_enable) { |
682 | struct mnttab srch = { 0 }; | |
683 | ||
684 | if (avl_numnodes(&hdl->libzfs_mnttab_cache)) | |
685 | libzfs_mnttab_fini(hdl); | |
686 | rewind(hdl->libzfs_mnttab); | |
687 | srch.mnt_special = (char *)fsname; | |
688 | srch.mnt_fstype = MNTTYPE_ZFS; | |
689 | if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) | |
690 | return (0); | |
691 | else | |
692 | return (ENOENT); | |
693 | } | |
694 | ||
fb5f0bc8 | 695 | if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) |
9babb374 | 696 | libzfs_mnttab_update(hdl); |
fb5f0bc8 BB |
697 | |
698 | find.mtn_mt.mnt_special = (char *)fsname; | |
699 | mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); | |
700 | if (mtn) { | |
701 | *entry = mtn->mtn_mt; | |
702 | return (0); | |
703 | } | |
704 | return (ENOENT); | |
705 | } | |
706 | ||
707 | void | |
708 | libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, | |
709 | const char *mountp, const char *mntopts) | |
710 | { | |
711 | mnttab_node_t *mtn; | |
712 | ||
713 | if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) | |
714 | return; | |
715 | mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); | |
716 | mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); | |
717 | mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); | |
718 | mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); | |
719 | mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); | |
720 | avl_add(&hdl->libzfs_mnttab_cache, mtn); | |
721 | } | |
722 | ||
723 | void | |
724 | libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) | |
725 | { | |
726 | mnttab_node_t find; | |
727 | mnttab_node_t *ret; | |
728 | ||
729 | find.mtn_mt.mnt_special = (char *)fsname; | |
c65aa5b2 | 730 | if ((ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL))) { |
fb5f0bc8 BB |
731 | avl_remove(&hdl->libzfs_mnttab_cache, ret); |
732 | free(ret->mtn_mt.mnt_special); | |
733 | free(ret->mtn_mt.mnt_mountp); | |
734 | free(ret->mtn_mt.mnt_fstype); | |
735 | free(ret->mtn_mt.mnt_mntopts); | |
736 | free(ret); | |
737 | } | |
738 | } | |
739 | ||
34dc7c2f BB |
740 | int |
741 | zfs_spa_version(zfs_handle_t *zhp, int *spa_version) | |
742 | { | |
b128c09f | 743 | zpool_handle_t *zpool_handle = zhp->zpool_hdl; |
34dc7c2f | 744 | |
34dc7c2f BB |
745 | if (zpool_handle == NULL) |
746 | return (-1); | |
747 | ||
748 | *spa_version = zpool_get_prop_int(zpool_handle, | |
749 | ZPOOL_PROP_VERSION, NULL); | |
34dc7c2f BB |
750 | return (0); |
751 | } | |
752 | ||
753 | /* | |
754 | * The choice of reservation property depends on the SPA version. | |
755 | */ | |
756 | static int | |
757 | zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) | |
758 | { | |
759 | int spa_version; | |
760 | ||
761 | if (zfs_spa_version(zhp, &spa_version) < 0) | |
762 | return (-1); | |
763 | ||
764 | if (spa_version >= SPA_VERSION_REFRESERVATION) | |
765 | *resv_prop = ZFS_PROP_REFRESERVATION; | |
766 | else | |
767 | *resv_prop = ZFS_PROP_RESERVATION; | |
768 | ||
769 | return (0); | |
770 | } | |
771 | ||
772 | /* | |
773 | * Given an nvlist of properties to set, validates that they are correct, and | |
774 | * parses any numeric properties (index, boolean, etc) if they are specified as | |
775 | * strings. | |
776 | */ | |
b128c09f BB |
777 | nvlist_t * |
778 | zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, | |
34dc7c2f BB |
779 | uint64_t zoned, zfs_handle_t *zhp, const char *errbuf) |
780 | { | |
781 | nvpair_t *elem; | |
782 | uint64_t intval; | |
783 | char *strval; | |
784 | zfs_prop_t prop; | |
785 | nvlist_t *ret; | |
786 | int chosen_normal = -1; | |
787 | int chosen_utf = -1; | |
788 | ||
34dc7c2f BB |
789 | if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { |
790 | (void) no_memory(hdl); | |
791 | return (NULL); | |
792 | } | |
793 | ||
9babb374 BB |
794 | /* |
795 | * Make sure this property is valid and applies to this type. | |
796 | */ | |
797 | ||
34dc7c2f BB |
798 | elem = NULL; |
799 | while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { | |
800 | const char *propname = nvpair_name(elem); | |
801 | ||
9babb374 BB |
802 | prop = zfs_name_to_prop(propname); |
803 | if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { | |
34dc7c2f | 804 | /* |
9babb374 | 805 | * This is a user property: make sure it's a |
34dc7c2f BB |
806 | * string, and that it's less than ZAP_MAXNAMELEN. |
807 | */ | |
808 | if (nvpair_type(elem) != DATA_TYPE_STRING) { | |
809 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
810 | "'%s' must be a string"), propname); | |
811 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
812 | goto error; | |
813 | } | |
814 | ||
815 | if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { | |
816 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
817 | "property name '%s' is too long"), | |
818 | propname); | |
819 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
820 | goto error; | |
821 | } | |
822 | ||
823 | (void) nvpair_value_string(elem, &strval); | |
824 | if (nvlist_add_string(ret, propname, strval) != 0) { | |
825 | (void) no_memory(hdl); | |
826 | goto error; | |
827 | } | |
828 | continue; | |
829 | } | |
830 | ||
9babb374 BB |
831 | /* |
832 | * Currently, only user properties can be modified on | |
833 | * snapshots. | |
834 | */ | |
b128c09f BB |
835 | if (type == ZFS_TYPE_SNAPSHOT) { |
836 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
837 | "this property can not be modified for snapshots")); | |
838 | (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); | |
839 | goto error; | |
840 | } | |
841 | ||
9babb374 BB |
842 | if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { |
843 | zfs_userquota_prop_t uqtype; | |
844 | char newpropname[128]; | |
845 | char domain[128]; | |
846 | uint64_t rid; | |
847 | uint64_t valary[3]; | |
848 | ||
849 | if (userquota_propname_decode(propname, zoned, | |
850 | &uqtype, domain, sizeof (domain), &rid) != 0) { | |
851 | zfs_error_aux(hdl, | |
852 | dgettext(TEXT_DOMAIN, | |
853 | "'%s' has an invalid user/group name"), | |
854 | propname); | |
855 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
856 | goto error; | |
857 | } | |
858 | ||
859 | if (uqtype != ZFS_PROP_USERQUOTA && | |
860 | uqtype != ZFS_PROP_GROUPQUOTA) { | |
861 | zfs_error_aux(hdl, | |
862 | dgettext(TEXT_DOMAIN, "'%s' is readonly"), | |
863 | propname); | |
864 | (void) zfs_error(hdl, EZFS_PROPREADONLY, | |
865 | errbuf); | |
866 | goto error; | |
867 | } | |
868 | ||
869 | if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
870 | (void) nvpair_value_string(elem, &strval); | |
871 | if (strcmp(strval, "none") == 0) { | |
872 | intval = 0; | |
873 | } else if (zfs_nicestrtonum(hdl, | |
874 | strval, &intval) != 0) { | |
875 | (void) zfs_error(hdl, | |
876 | EZFS_BADPROP, errbuf); | |
877 | goto error; | |
878 | } | |
879 | } else if (nvpair_type(elem) == | |
880 | DATA_TYPE_UINT64) { | |
881 | (void) nvpair_value_uint64(elem, &intval); | |
882 | if (intval == 0) { | |
883 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
884 | "use 'none' to disable " | |
885 | "userquota/groupquota")); | |
886 | goto error; | |
887 | } | |
888 | } else { | |
889 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
890 | "'%s' must be a number"), propname); | |
891 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
892 | goto error; | |
893 | } | |
894 | ||
428870ff BB |
895 | /* |
896 | * Encode the prop name as | |
897 | * userquota@<hex-rid>-domain, to make it easy | |
898 | * for the kernel to decode. | |
899 | */ | |
9babb374 | 900 | (void) snprintf(newpropname, sizeof (newpropname), |
428870ff BB |
901 | "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], |
902 | (longlong_t)rid, domain); | |
9babb374 BB |
903 | valary[0] = uqtype; |
904 | valary[1] = rid; | |
905 | valary[2] = intval; | |
906 | if (nvlist_add_uint64_array(ret, newpropname, | |
907 | valary, 3) != 0) { | |
908 | (void) no_memory(hdl); | |
909 | goto error; | |
910 | } | |
911 | continue; | |
330d06f9 MA |
912 | } else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) { |
913 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
914 | "'%s' is readonly"), | |
915 | propname); | |
916 | (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); | |
917 | goto error; | |
9babb374 BB |
918 | } |
919 | ||
920 | if (prop == ZPROP_INVAL) { | |
921 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
922 | "invalid property '%s'"), propname); | |
923 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
924 | goto error; | |
925 | } | |
926 | ||
34dc7c2f BB |
927 | if (!zfs_prop_valid_for_type(prop, type)) { |
928 | zfs_error_aux(hdl, | |
929 | dgettext(TEXT_DOMAIN, "'%s' does not " | |
930 | "apply to datasets of this type"), propname); | |
931 | (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); | |
932 | goto error; | |
933 | } | |
934 | ||
935 | if (zfs_prop_readonly(prop) && | |
936 | (!zfs_prop_setonce(prop) || zhp != NULL)) { | |
937 | zfs_error_aux(hdl, | |
938 | dgettext(TEXT_DOMAIN, "'%s' is readonly"), | |
939 | propname); | |
940 | (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); | |
941 | goto error; | |
942 | } | |
943 | ||
944 | if (zprop_parse_value(hdl, elem, prop, type, ret, | |
945 | &strval, &intval, errbuf) != 0) | |
946 | goto error; | |
947 | ||
948 | /* | |
949 | * Perform some additional checks for specific properties. | |
950 | */ | |
951 | switch (prop) { | |
952 | case ZFS_PROP_VERSION: | |
953 | { | |
954 | int version; | |
955 | ||
956 | if (zhp == NULL) | |
957 | break; | |
958 | version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); | |
959 | if (intval < version) { | |
960 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
961 | "Can not downgrade; already at version %u"), | |
962 | version); | |
963 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
964 | goto error; | |
965 | } | |
966 | break; | |
967 | } | |
968 | ||
969 | case ZFS_PROP_RECORDSIZE: | |
970 | case ZFS_PROP_VOLBLOCKSIZE: | |
971 | /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */ | |
972 | if (intval < SPA_MINBLOCKSIZE || | |
973 | intval > SPA_MAXBLOCKSIZE || !ISP2(intval)) { | |
974 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
975 | "'%s' must be power of 2 from %u " | |
976 | "to %uk"), propname, | |
977 | (uint_t)SPA_MINBLOCKSIZE, | |
978 | (uint_t)SPA_MAXBLOCKSIZE >> 10); | |
979 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
980 | goto error; | |
981 | } | |
982 | break; | |
983 | ||
428870ff BB |
984 | case ZFS_PROP_MLSLABEL: |
985 | { | |
d2c15e84 | 986 | #ifdef HAVE_MLSLABEL |
428870ff BB |
987 | /* |
988 | * Verify the mlslabel string and convert to | |
989 | * internal hex label string. | |
990 | */ | |
991 | ||
992 | m_label_t *new_sl; | |
993 | char *hex = NULL; /* internal label string */ | |
994 | ||
995 | /* Default value is already OK. */ | |
996 | if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) | |
997 | break; | |
998 | ||
999 | /* Verify the label can be converted to binary form */ | |
1000 | if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || | |
1001 | (str_to_label(strval, &new_sl, MAC_LABEL, | |
1002 | L_NO_CORRECTION, NULL) == -1)) { | |
1003 | goto badlabel; | |
34dc7c2f BB |
1004 | } |
1005 | ||
428870ff BB |
1006 | /* Now translate to hex internal label string */ |
1007 | if (label_to_str(new_sl, &hex, M_INTERNAL, | |
1008 | DEF_NAMES) != 0) { | |
1009 | if (hex) | |
1010 | free(hex); | |
1011 | goto badlabel; | |
1012 | } | |
1013 | m_label_free(new_sl); | |
1014 | ||
1015 | /* If string is already in internal form, we're done. */ | |
1016 | if (strcmp(strval, hex) == 0) { | |
1017 | free(hex); | |
1018 | break; | |
1019 | } | |
1020 | ||
1021 | /* Replace the label string with the internal form. */ | |
1022 | (void) nvlist_remove(ret, zfs_prop_to_name(prop), | |
1023 | DATA_TYPE_STRING); | |
1024 | verify(nvlist_add_string(ret, zfs_prop_to_name(prop), | |
1025 | hex) == 0); | |
1026 | free(hex); | |
1027 | ||
34dc7c2f BB |
1028 | break; |
1029 | ||
428870ff BB |
1030 | badlabel: |
1031 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1032 | "invalid mlslabel '%s'"), strval); | |
1033 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
1034 | m_label_free(new_sl); /* OK if null */ | |
1035 | goto error; | |
d2c15e84 BB |
1036 | #else |
1037 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1038 | "mlslabels are unsupported")); | |
1039 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
1040 | goto error; | |
1041 | #endif /* HAVE_MLSLABEL */ | |
428870ff BB |
1042 | } |
1043 | ||
34dc7c2f BB |
1044 | case ZFS_PROP_MOUNTPOINT: |
1045 | { | |
1046 | namecheck_err_t why; | |
1047 | ||
1048 | if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || | |
1049 | strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) | |
1050 | break; | |
1051 | ||
1052 | if (mountpoint_namecheck(strval, &why)) { | |
1053 | switch (why) { | |
1054 | case NAME_ERR_LEADING_SLASH: | |
1055 | zfs_error_aux(hdl, | |
1056 | dgettext(TEXT_DOMAIN, | |
1057 | "'%s' must be an absolute path, " | |
1058 | "'none', or 'legacy'"), propname); | |
1059 | break; | |
1060 | case NAME_ERR_TOOLONG: | |
1061 | zfs_error_aux(hdl, | |
1062 | dgettext(TEXT_DOMAIN, | |
1063 | "component of '%s' is too long"), | |
1064 | propname); | |
1065 | break; | |
e75c13c3 BB |
1066 | default: |
1067 | break; | |
34dc7c2f BB |
1068 | } |
1069 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
1070 | goto error; | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | /*FALLTHRU*/ | |
1075 | ||
1076 | case ZFS_PROP_SHARESMB: | |
1077 | case ZFS_PROP_SHARENFS: | |
1078 | /* | |
1079 | * For the mountpoint and sharenfs or sharesmb | |
1080 | * properties, check if it can be set in a | |
1081 | * global/non-global zone based on | |
1082 | * the zoned property value: | |
1083 | * | |
1084 | * global zone non-global zone | |
1085 | * -------------------------------------------------- | |
1086 | * zoned=on mountpoint (no) mountpoint (yes) | |
1087 | * sharenfs (no) sharenfs (no) | |
1088 | * sharesmb (no) sharesmb (no) | |
1089 | * | |
1090 | * zoned=off mountpoint (yes) N/A | |
1091 | * sharenfs (yes) | |
1092 | * sharesmb (yes) | |
1093 | */ | |
1094 | if (zoned) { | |
1095 | if (getzoneid() == GLOBAL_ZONEID) { | |
1096 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1097 | "'%s' cannot be set on " | |
1098 | "dataset in a non-global zone"), | |
1099 | propname); | |
1100 | (void) zfs_error(hdl, EZFS_ZONED, | |
1101 | errbuf); | |
1102 | goto error; | |
1103 | } else if (prop == ZFS_PROP_SHARENFS || | |
1104 | prop == ZFS_PROP_SHARESMB) { | |
1105 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1106 | "'%s' cannot be set in " | |
1107 | "a non-global zone"), propname); | |
1108 | (void) zfs_error(hdl, EZFS_ZONED, | |
1109 | errbuf); | |
1110 | goto error; | |
1111 | } | |
1112 | } else if (getzoneid() != GLOBAL_ZONEID) { | |
1113 | /* | |
1114 | * If zoned property is 'off', this must be in | |
9babb374 | 1115 | * a global zone. If not, something is wrong. |
34dc7c2f BB |
1116 | */ |
1117 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1118 | "'%s' cannot be set while dataset " | |
1119 | "'zoned' property is set"), propname); | |
1120 | (void) zfs_error(hdl, EZFS_ZONED, errbuf); | |
1121 | goto error; | |
1122 | } | |
1123 | ||
1124 | /* | |
1125 | * At this point, it is legitimate to set the | |
1126 | * property. Now we want to make sure that the | |
1127 | * property value is valid if it is sharenfs. | |
1128 | */ | |
1129 | if ((prop == ZFS_PROP_SHARENFS || | |
1130 | prop == ZFS_PROP_SHARESMB) && | |
1131 | strcmp(strval, "on") != 0 && | |
1132 | strcmp(strval, "off") != 0) { | |
1133 | zfs_share_proto_t proto; | |
1134 | ||
1135 | if (prop == ZFS_PROP_SHARESMB) | |
1136 | proto = PROTO_SMB; | |
1137 | else | |
1138 | proto = PROTO_NFS; | |
1139 | ||
1140 | /* | |
1141 | * Must be an valid sharing protocol | |
1142 | * option string so init the libshare | |
1143 | * in order to enable the parser and | |
1144 | * then parse the options. We use the | |
1145 | * control API since we don't care about | |
1146 | * the current configuration and don't | |
1147 | * want the overhead of loading it | |
1148 | * until we actually do something. | |
1149 | */ | |
1150 | ||
1151 | if (zfs_init_libshare(hdl, | |
1152 | SA_INIT_CONTROL_API) != SA_OK) { | |
1153 | /* | |
1154 | * An error occurred so we can't do | |
1155 | * anything | |
1156 | */ | |
1157 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1158 | "'%s' cannot be set: problem " | |
1159 | "in share initialization"), | |
1160 | propname); | |
1161 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1162 | errbuf); | |
1163 | goto error; | |
1164 | } | |
1165 | ||
1166 | if (zfs_parse_options(strval, proto) != SA_OK) { | |
1167 | /* | |
1168 | * There was an error in parsing so | |
1169 | * deal with it by issuing an error | |
1170 | * message and leaving after | |
1171 | * uninitializing the the libshare | |
1172 | * interface. | |
1173 | */ | |
1174 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1175 | "'%s' cannot be set to invalid " | |
1176 | "options"), propname); | |
1177 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1178 | errbuf); | |
1179 | zfs_uninit_libshare(hdl); | |
1180 | goto error; | |
1181 | } | |
1182 | zfs_uninit_libshare(hdl); | |
1183 | } | |
1184 | ||
1185 | break; | |
1186 | case ZFS_PROP_UTF8ONLY: | |
1187 | chosen_utf = (int)intval; | |
1188 | break; | |
1189 | case ZFS_PROP_NORMALIZE: | |
1190 | chosen_normal = (int)intval; | |
1191 | break; | |
e75c13c3 BB |
1192 | default: |
1193 | break; | |
34dc7c2f BB |
1194 | } |
1195 | ||
1196 | /* | |
1197 | * For changes to existing volumes, we have some additional | |
1198 | * checks to enforce. | |
1199 | */ | |
1200 | if (type == ZFS_TYPE_VOLUME && zhp != NULL) { | |
1201 | uint64_t volsize = zfs_prop_get_int(zhp, | |
1202 | ZFS_PROP_VOLSIZE); | |
1203 | uint64_t blocksize = zfs_prop_get_int(zhp, | |
1204 | ZFS_PROP_VOLBLOCKSIZE); | |
1205 | char buf[64]; | |
1206 | ||
1207 | switch (prop) { | |
1208 | case ZFS_PROP_RESERVATION: | |
1209 | case ZFS_PROP_REFRESERVATION: | |
1210 | if (intval > volsize) { | |
1211 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1212 | "'%s' is greater than current " | |
1213 | "volume size"), propname); | |
1214 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1215 | errbuf); | |
1216 | goto error; | |
1217 | } | |
1218 | break; | |
1219 | ||
1220 | case ZFS_PROP_VOLSIZE: | |
1221 | if (intval % blocksize != 0) { | |
1222 | zfs_nicenum(blocksize, buf, | |
1223 | sizeof (buf)); | |
1224 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1225 | "'%s' must be a multiple of " | |
1226 | "volume block size (%s)"), | |
1227 | propname, buf); | |
1228 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1229 | errbuf); | |
1230 | goto error; | |
1231 | } | |
1232 | ||
1233 | if (intval == 0) { | |
1234 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1235 | "'%s' cannot be zero"), | |
1236 | propname); | |
1237 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1238 | errbuf); | |
1239 | goto error; | |
1240 | } | |
1241 | break; | |
e75c13c3 BB |
1242 | default: |
1243 | break; | |
34dc7c2f BB |
1244 | } |
1245 | } | |
1246 | } | |
1247 | ||
1248 | /* | |
1249 | * If normalization was chosen, but no UTF8 choice was made, | |
1250 | * enforce rejection of non-UTF8 names. | |
1251 | * | |
1252 | * If normalization was chosen, but rejecting non-UTF8 names | |
1253 | * was explicitly not chosen, it is an error. | |
1254 | */ | |
1255 | if (chosen_normal > 0 && chosen_utf < 0) { | |
1256 | if (nvlist_add_uint64(ret, | |
1257 | zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { | |
1258 | (void) no_memory(hdl); | |
1259 | goto error; | |
1260 | } | |
1261 | } else if (chosen_normal > 0 && chosen_utf == 0) { | |
1262 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1263 | "'%s' must be set 'on' if normalization chosen"), | |
1264 | zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); | |
1265 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
1266 | goto error; | |
1267 | } | |
572e2857 BB |
1268 | return (ret); |
1269 | ||
1270 | error: | |
1271 | nvlist_free(ret); | |
1272 | return (NULL); | |
1273 | } | |
1274 | ||
1275 | int | |
1276 | zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) | |
1277 | { | |
1278 | uint64_t old_volsize; | |
1279 | uint64_t new_volsize; | |
1280 | uint64_t old_reservation; | |
1281 | uint64_t new_reservation; | |
1282 | zfs_prop_t resv_prop; | |
34dc7c2f BB |
1283 | |
1284 | /* | |
1285 | * If this is an existing volume, and someone is setting the volsize, | |
1286 | * make sure that it matches the reservation, or add it if necessary. | |
1287 | */ | |
572e2857 BB |
1288 | old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); |
1289 | if (zfs_which_resv_prop(zhp, &resv_prop) < 0) | |
1290 | return (-1); | |
1291 | old_reservation = zfs_prop_get_int(zhp, resv_prop); | |
1292 | if ((zvol_volsize_to_reservation(old_volsize, zhp->zfs_props) != | |
1293 | old_reservation) || nvlist_lookup_uint64(nvl, | |
1294 | zfs_prop_to_name(resv_prop), &new_reservation) != ENOENT) { | |
1295 | return (0); | |
34dc7c2f | 1296 | } |
572e2857 BB |
1297 | if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), |
1298 | &new_volsize) != 0) | |
1299 | return (-1); | |
1300 | new_reservation = zvol_volsize_to_reservation(new_volsize, | |
1301 | zhp->zfs_props); | |
1302 | if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), | |
1303 | new_reservation) != 0) { | |
1304 | (void) no_memory(zhp->zfs_hdl); | |
1305 | return (-1); | |
1306 | } | |
1307 | return (1); | |
34dc7c2f BB |
1308 | } |
1309 | ||
428870ff BB |
1310 | void |
1311 | zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, | |
1312 | char *errbuf) | |
1313 | { | |
1314 | switch (err) { | |
1315 | ||
1316 | case ENOSPC: | |
1317 | /* | |
1318 | * For quotas and reservations, ENOSPC indicates | |
1319 | * something different; setting a quota or reservation | |
1320 | * doesn't use any disk space. | |
1321 | */ | |
1322 | switch (prop) { | |
1323 | case ZFS_PROP_QUOTA: | |
1324 | case ZFS_PROP_REFQUOTA: | |
1325 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1326 | "size is less than current used or " | |
1327 | "reserved space")); | |
1328 | (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); | |
1329 | break; | |
1330 | ||
1331 | case ZFS_PROP_RESERVATION: | |
1332 | case ZFS_PROP_REFRESERVATION: | |
1333 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1334 | "size is greater than available space")); | |
1335 | (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); | |
1336 | break; | |
1337 | ||
1338 | default: | |
1339 | (void) zfs_standard_error(hdl, err, errbuf); | |
1340 | break; | |
1341 | } | |
1342 | break; | |
1343 | ||
1344 | case EBUSY: | |
1345 | (void) zfs_standard_error(hdl, EBUSY, errbuf); | |
1346 | break; | |
1347 | ||
1348 | case EROFS: | |
1349 | (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); | |
1350 | break; | |
1351 | ||
1352 | case ENOTSUP: | |
1353 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1354 | "pool and or dataset must be upgraded to set this " | |
1355 | "property or value")); | |
1356 | (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); | |
1357 | break; | |
1358 | ||
1359 | case ERANGE: | |
1360 | if (prop == ZFS_PROP_COMPRESSION) { | |
1361 | (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1362 | "property setting is not allowed on " | |
1363 | "bootable datasets")); | |
1364 | (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); | |
1365 | } else { | |
1366 | (void) zfs_standard_error(hdl, err, errbuf); | |
1367 | } | |
1368 | break; | |
1369 | ||
1370 | case EINVAL: | |
1371 | if (prop == ZPROP_INVAL) { | |
1372 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
1373 | } else { | |
1374 | (void) zfs_standard_error(hdl, err, errbuf); | |
1375 | } | |
1376 | break; | |
1377 | ||
1378 | case EOVERFLOW: | |
1379 | /* | |
1380 | * This platform can't address a volume this big. | |
1381 | */ | |
1382 | #ifdef _ILP32 | |
1383 | if (prop == ZFS_PROP_VOLSIZE) { | |
1384 | (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); | |
1385 | break; | |
1386 | } | |
1387 | #endif | |
1388 | /* FALLTHROUGH */ | |
1389 | default: | |
1390 | (void) zfs_standard_error(hdl, err, errbuf); | |
1391 | } | |
1392 | } | |
1393 | ||
2cf7f52b BB |
1394 | static boolean_t |
1395 | zfs_is_namespace_prop(zfs_prop_t prop) | |
1396 | { | |
1397 | switch (prop) { | |
1398 | ||
1399 | case ZFS_PROP_ATIME: | |
1400 | case ZFS_PROP_DEVICES: | |
1401 | case ZFS_PROP_EXEC: | |
1402 | case ZFS_PROP_SETUID: | |
1403 | case ZFS_PROP_READONLY: | |
1404 | case ZFS_PROP_XATTR: | |
1405 | case ZFS_PROP_NBMAND: | |
1406 | return (B_TRUE); | |
1407 | ||
1408 | default: | |
1409 | return (B_FALSE); | |
1410 | } | |
1411 | } | |
1412 | ||
34dc7c2f BB |
1413 | /* |
1414 | * Given a property name and value, set the property for the given dataset. | |
1415 | */ | |
1416 | int | |
1417 | zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) | |
1418 | { | |
2598c001 | 1419 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1420 | int ret = -1; |
1421 | prop_changelist_t *cl = NULL; | |
1422 | char errbuf[1024]; | |
1423 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
1424 | nvlist_t *nvl = NULL, *realprops; | |
1425 | zfs_prop_t prop; | |
b128c09f BB |
1426 | boolean_t do_prefix; |
1427 | uint64_t idx; | |
d4ed6673 | 1428 | int added_resv = 0; |
34dc7c2f BB |
1429 | |
1430 | (void) snprintf(errbuf, sizeof (errbuf), | |
1431 | dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), | |
1432 | zhp->zfs_name); | |
1433 | ||
1434 | if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || | |
1435 | nvlist_add_string(nvl, propname, propval) != 0) { | |
1436 | (void) no_memory(hdl); | |
1437 | goto error; | |
1438 | } | |
1439 | ||
b128c09f | 1440 | if ((realprops = zfs_valid_proplist(hdl, zhp->zfs_type, nvl, |
34dc7c2f BB |
1441 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL) |
1442 | goto error; | |
1443 | ||
1444 | nvlist_free(nvl); | |
1445 | nvl = realprops; | |
1446 | ||
1447 | prop = zfs_name_to_prop(propname); | |
1448 | ||
572e2857 BB |
1449 | if (prop == ZFS_PROP_VOLSIZE) { |
1450 | if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) | |
1451 | goto error; | |
1452 | } | |
1453 | ||
b128c09f | 1454 | if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) |
34dc7c2f BB |
1455 | goto error; |
1456 | ||
1457 | if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { | |
1458 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1459 | "child dataset with inherited mountpoint is used " | |
1460 | "in a non-global zone")); | |
1461 | ret = zfs_error(hdl, EZFS_ZONED, errbuf); | |
1462 | goto error; | |
1463 | } | |
1464 | ||
b128c09f BB |
1465 | /* |
1466 | * If the dataset's canmount property is being set to noauto, | |
1467 | * then we want to prevent unmounting & remounting it. | |
1468 | */ | |
1469 | do_prefix = !((prop == ZFS_PROP_CANMOUNT) && | |
1470 | (zprop_string_to_index(prop, propval, &idx, | |
1471 | ZFS_TYPE_DATASET) == 0) && (idx == ZFS_CANMOUNT_NOAUTO)); | |
34dc7c2f BB |
1472 | |
1473 | if (do_prefix && (ret = changelist_prefix(cl)) != 0) | |
b128c09f | 1474 | goto error; |
34dc7c2f BB |
1475 | |
1476 | /* | |
1477 | * Execute the corresponding ioctl() to set this property. | |
1478 | */ | |
1479 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1480 | ||
1481 | if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) | |
1482 | goto error; | |
1483 | ||
1484 | ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); | |
9babb374 | 1485 | |
34dc7c2f | 1486 | if (ret != 0) { |
428870ff | 1487 | zfs_setprop_error(hdl, prop, errno, errbuf); |
572e2857 BB |
1488 | if (added_resv && errno == ENOSPC) { |
1489 | /* clean up the volsize property we tried to set */ | |
1490 | uint64_t old_volsize = zfs_prop_get_int(zhp, | |
1491 | ZFS_PROP_VOLSIZE); | |
1492 | nvlist_free(nvl); | |
1493 | zcmd_free_nvlists(&zc); | |
1494 | if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) | |
1495 | goto error; | |
1496 | if (nvlist_add_uint64(nvl, | |
1497 | zfs_prop_to_name(ZFS_PROP_VOLSIZE), | |
1498 | old_volsize) != 0) | |
1499 | goto error; | |
1500 | if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) | |
1501 | goto error; | |
1502 | (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); | |
1503 | } | |
34dc7c2f BB |
1504 | } else { |
1505 | if (do_prefix) | |
1506 | ret = changelist_postfix(cl); | |
1507 | ||
2cf7f52b BB |
1508 | if (ret == 0) { |
1509 | /* | |
1510 | * Refresh the statistics so the new property | |
1511 | * value is reflected. | |
1512 | */ | |
34dc7c2f | 1513 | (void) get_stats(zhp); |
2cf7f52b BB |
1514 | |
1515 | /* | |
1516 | * Remount the filesystem to propagate the change | |
1517 | * if one of the options handled by the generic | |
1518 | * Linux namespace layer has been modified. | |
1519 | */ | |
1520 | if (zfs_is_namespace_prop(prop) && | |
1521 | zfs_is_mounted(zhp, NULL)) | |
1522 | ret = zfs_mount(zhp, MNTOPT_REMOUNT, 0); | |
1523 | } | |
34dc7c2f BB |
1524 | } |
1525 | ||
1526 | error: | |
1527 | nvlist_free(nvl); | |
1528 | zcmd_free_nvlists(&zc); | |
1529 | if (cl) | |
1530 | changelist_free(cl); | |
1531 | return (ret); | |
1532 | } | |
1533 | ||
1534 | /* | |
428870ff BB |
1535 | * Given a property, inherit the value from the parent dataset, or if received |
1536 | * is TRUE, revert to the received value, if any. | |
34dc7c2f BB |
1537 | */ |
1538 | int | |
428870ff | 1539 | zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) |
34dc7c2f | 1540 | { |
2598c001 | 1541 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1542 | int ret; |
1543 | prop_changelist_t *cl; | |
1544 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
1545 | char errbuf[1024]; | |
1546 | zfs_prop_t prop; | |
1547 | ||
1548 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1549 | "cannot inherit %s for '%s'"), propname, zhp->zfs_name); | |
1550 | ||
428870ff | 1551 | zc.zc_cookie = received; |
34dc7c2f BB |
1552 | if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { |
1553 | /* | |
1554 | * For user properties, the amount of work we have to do is very | |
1555 | * small, so just do it here. | |
1556 | */ | |
1557 | if (!zfs_prop_user(propname)) { | |
1558 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1559 | "invalid property")); | |
1560 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
1561 | } | |
1562 | ||
1563 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1564 | (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); | |
1565 | ||
1566 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) | |
1567 | return (zfs_standard_error(hdl, errno, errbuf)); | |
1568 | ||
1569 | return (0); | |
1570 | } | |
1571 | ||
1572 | /* | |
1573 | * Verify that this property is inheritable. | |
1574 | */ | |
1575 | if (zfs_prop_readonly(prop)) | |
1576 | return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); | |
1577 | ||
428870ff | 1578 | if (!zfs_prop_inheritable(prop) && !received) |
34dc7c2f BB |
1579 | return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); |
1580 | ||
1581 | /* | |
1582 | * Check to see if the value applies to this type | |
1583 | */ | |
1584 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) | |
1585 | return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); | |
1586 | ||
1587 | /* | |
572e2857 | 1588 | * Normalize the name, to get rid of shorthand abbreviations. |
34dc7c2f BB |
1589 | */ |
1590 | propname = zfs_prop_to_name(prop); | |
1591 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1592 | (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); | |
1593 | ||
1594 | if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && | |
1595 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { | |
1596 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1597 | "dataset is used in a non-global zone")); | |
1598 | return (zfs_error(hdl, EZFS_ZONED, errbuf)); | |
1599 | } | |
1600 | ||
1601 | /* | |
1602 | * Determine datasets which will be affected by this change, if any. | |
1603 | */ | |
b128c09f | 1604 | if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) |
34dc7c2f BB |
1605 | return (-1); |
1606 | ||
1607 | if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { | |
1608 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1609 | "child dataset with inherited mountpoint is used " | |
1610 | "in a non-global zone")); | |
1611 | ret = zfs_error(hdl, EZFS_ZONED, errbuf); | |
1612 | goto error; | |
1613 | } | |
1614 | ||
1615 | if ((ret = changelist_prefix(cl)) != 0) | |
1616 | goto error; | |
1617 | ||
1618 | if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { | |
1619 | return (zfs_standard_error(hdl, errno, errbuf)); | |
1620 | } else { | |
1621 | ||
1622 | if ((ret = changelist_postfix(cl)) != 0) | |
1623 | goto error; | |
1624 | ||
1625 | /* | |
1626 | * Refresh the statistics so the new property is reflected. | |
1627 | */ | |
1628 | (void) get_stats(zhp); | |
1629 | } | |
1630 | ||
1631 | error: | |
1632 | changelist_free(cl); | |
1633 | return (ret); | |
1634 | } | |
1635 | ||
1636 | /* | |
1637 | * True DSL properties are stored in an nvlist. The following two functions | |
1638 | * extract them appropriately. | |
1639 | */ | |
2cf7f52b | 1640 | uint64_t |
34dc7c2f BB |
1641 | getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) |
1642 | { | |
1643 | nvlist_t *nv; | |
1644 | uint64_t value; | |
1645 | ||
1646 | *source = NULL; | |
1647 | if (nvlist_lookup_nvlist(zhp->zfs_props, | |
1648 | zfs_prop_to_name(prop), &nv) == 0) { | |
1649 | verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); | |
1650 | (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); | |
1651 | } else { | |
9babb374 BB |
1652 | verify(!zhp->zfs_props_table || |
1653 | zhp->zfs_props_table[prop] == B_TRUE); | |
34dc7c2f BB |
1654 | value = zfs_prop_default_numeric(prop); |
1655 | *source = ""; | |
1656 | } | |
1657 | ||
1658 | return (value); | |
1659 | } | |
1660 | ||
1661 | static char * | |
1662 | getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) | |
1663 | { | |
1664 | nvlist_t *nv; | |
1665 | char *value; | |
1666 | ||
1667 | *source = NULL; | |
1668 | if (nvlist_lookup_nvlist(zhp->zfs_props, | |
1669 | zfs_prop_to_name(prop), &nv) == 0) { | |
1670 | verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); | |
1671 | (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); | |
1672 | } else { | |
9babb374 BB |
1673 | verify(!zhp->zfs_props_table || |
1674 | zhp->zfs_props_table[prop] == B_TRUE); | |
34dc7c2f BB |
1675 | if ((value = (char *)zfs_prop_default_string(prop)) == NULL) |
1676 | value = ""; | |
1677 | *source = ""; | |
1678 | } | |
1679 | ||
1680 | return (value); | |
1681 | } | |
1682 | ||
428870ff BB |
1683 | static boolean_t |
1684 | zfs_is_recvd_props_mode(zfs_handle_t *zhp) | |
1685 | { | |
1686 | return (zhp->zfs_props == zhp->zfs_recvd_props); | |
1687 | } | |
1688 | ||
1689 | static void | |
1690 | zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) | |
1691 | { | |
1692 | *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; | |
1693 | zhp->zfs_props = zhp->zfs_recvd_props; | |
1694 | } | |
1695 | ||
1696 | static void | |
1697 | zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) | |
1698 | { | |
1699 | zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; | |
1700 | *cookie = 0; | |
1701 | } | |
1702 | ||
34dc7c2f BB |
1703 | /* |
1704 | * Internal function for getting a numeric property. Both zfs_prop_get() and | |
1705 | * zfs_prop_get_int() are built using this interface. | |
1706 | * | |
1707 | * Certain properties can be overridden using 'mount -o'. In this case, scan | |
9a616b5d | 1708 | * the contents of the /etc/mtab entry, searching for the appropriate options. |
34dc7c2f BB |
1709 | * If they differ from the on-disk values, report the current values and mark |
1710 | * the source "temporary". | |
1711 | */ | |
1712 | static int | |
1713 | get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, | |
1714 | char **source, uint64_t *val) | |
1715 | { | |
2598c001 | 1716 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1717 | nvlist_t *zplprops = NULL; |
1718 | struct mnttab mnt; | |
1719 | char *mntopt_on = NULL; | |
1720 | char *mntopt_off = NULL; | |
428870ff | 1721 | boolean_t received = zfs_is_recvd_props_mode(zhp); |
34dc7c2f BB |
1722 | |
1723 | *source = NULL; | |
1724 | ||
1725 | switch (prop) { | |
1726 | case ZFS_PROP_ATIME: | |
1727 | mntopt_on = MNTOPT_ATIME; | |
1728 | mntopt_off = MNTOPT_NOATIME; | |
1729 | break; | |
1730 | ||
1731 | case ZFS_PROP_DEVICES: | |
1732 | mntopt_on = MNTOPT_DEVICES; | |
1733 | mntopt_off = MNTOPT_NODEVICES; | |
1734 | break; | |
1735 | ||
1736 | case ZFS_PROP_EXEC: | |
1737 | mntopt_on = MNTOPT_EXEC; | |
1738 | mntopt_off = MNTOPT_NOEXEC; | |
1739 | break; | |
1740 | ||
1741 | case ZFS_PROP_READONLY: | |
1742 | mntopt_on = MNTOPT_RO; | |
1743 | mntopt_off = MNTOPT_RW; | |
1744 | break; | |
1745 | ||
1746 | case ZFS_PROP_SETUID: | |
1747 | mntopt_on = MNTOPT_SETUID; | |
1748 | mntopt_off = MNTOPT_NOSETUID; | |
1749 | break; | |
1750 | ||
1751 | case ZFS_PROP_XATTR: | |
1752 | mntopt_on = MNTOPT_XATTR; | |
1753 | mntopt_off = MNTOPT_NOXATTR; | |
1754 | break; | |
1755 | ||
1756 | case ZFS_PROP_NBMAND: | |
1757 | mntopt_on = MNTOPT_NBMAND; | |
1758 | mntopt_off = MNTOPT_NONBMAND; | |
1759 | break; | |
e75c13c3 BB |
1760 | default: |
1761 | break; | |
34dc7c2f BB |
1762 | } |
1763 | ||
1764 | /* | |
1765 | * Because looking up the mount options is potentially expensive | |
9a616b5d | 1766 | * (iterating over all of /etc/mtab), we defer its calculation until |
34dc7c2f BB |
1767 | * we're looking up a property which requires its presence. |
1768 | */ | |
1769 | if (!zhp->zfs_mntcheck && | |
1770 | (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { | |
fb5f0bc8 BB |
1771 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
1772 | struct mnttab entry; | |
34dc7c2f | 1773 | |
fb5f0bc8 BB |
1774 | if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { |
1775 | zhp->zfs_mntopts = zfs_strdup(hdl, | |
34dc7c2f BB |
1776 | entry.mnt_mntopts); |
1777 | if (zhp->zfs_mntopts == NULL) | |
1778 | return (-1); | |
1779 | } | |
1780 | ||
1781 | zhp->zfs_mntcheck = B_TRUE; | |
1782 | } | |
1783 | ||
1784 | if (zhp->zfs_mntopts == NULL) | |
1785 | mnt.mnt_mntopts = ""; | |
1786 | else | |
1787 | mnt.mnt_mntopts = zhp->zfs_mntopts; | |
1788 | ||
1789 | switch (prop) { | |
1790 | case ZFS_PROP_ATIME: | |
1791 | case ZFS_PROP_DEVICES: | |
1792 | case ZFS_PROP_EXEC: | |
1793 | case ZFS_PROP_READONLY: | |
1794 | case ZFS_PROP_SETUID: | |
1795 | case ZFS_PROP_XATTR: | |
1796 | case ZFS_PROP_NBMAND: | |
1797 | *val = getprop_uint64(zhp, prop, source); | |
1798 | ||
428870ff BB |
1799 | if (received) |
1800 | break; | |
1801 | ||
34dc7c2f BB |
1802 | if (hasmntopt(&mnt, mntopt_on) && !*val) { |
1803 | *val = B_TRUE; | |
1804 | if (src) | |
1805 | *src = ZPROP_SRC_TEMPORARY; | |
1806 | } else if (hasmntopt(&mnt, mntopt_off) && *val) { | |
1807 | *val = B_FALSE; | |
1808 | if (src) | |
1809 | *src = ZPROP_SRC_TEMPORARY; | |
1810 | } | |
1811 | break; | |
1812 | ||
1813 | case ZFS_PROP_CANMOUNT: | |
428870ff | 1814 | case ZFS_PROP_VOLSIZE: |
34dc7c2f BB |
1815 | case ZFS_PROP_QUOTA: |
1816 | case ZFS_PROP_REFQUOTA: | |
1817 | case ZFS_PROP_RESERVATION: | |
1818 | case ZFS_PROP_REFRESERVATION: | |
1819 | *val = getprop_uint64(zhp, prop, source); | |
428870ff BB |
1820 | |
1821 | if (*source == NULL) { | |
1822 | /* not default, must be local */ | |
34dc7c2f | 1823 | *source = zhp->zfs_name; |
428870ff | 1824 | } |
34dc7c2f BB |
1825 | break; |
1826 | ||
1827 | case ZFS_PROP_MOUNTED: | |
1828 | *val = (zhp->zfs_mntopts != NULL); | |
1829 | break; | |
1830 | ||
1831 | case ZFS_PROP_NUMCLONES: | |
1832 | *val = zhp->zfs_dmustats.dds_num_clones; | |
1833 | break; | |
1834 | ||
1835 | case ZFS_PROP_VERSION: | |
1836 | case ZFS_PROP_NORMALIZE: | |
1837 | case ZFS_PROP_UTF8ONLY: | |
1838 | case ZFS_PROP_CASE: | |
1839 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || | |
1840 | zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) | |
1841 | return (-1); | |
1842 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1843 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { | |
1844 | zcmd_free_nvlists(&zc); | |
45d1cae3 | 1845 | return (-1); |
34dc7c2f BB |
1846 | } |
1847 | if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || | |
1848 | nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), | |
1849 | val) != 0) { | |
1850 | zcmd_free_nvlists(&zc); | |
45d1cae3 | 1851 | return (-1); |
34dc7c2f BB |
1852 | } |
1853 | if (zplprops) | |
1854 | nvlist_free(zplprops); | |
1855 | zcmd_free_nvlists(&zc); | |
1856 | break; | |
1857 | ||
1858 | default: | |
1859 | switch (zfs_prop_get_type(prop)) { | |
1860 | case PROP_TYPE_NUMBER: | |
1861 | case PROP_TYPE_INDEX: | |
1862 | *val = getprop_uint64(zhp, prop, source); | |
b128c09f | 1863 | /* |
9babb374 | 1864 | * If we tried to use a default value for a |
b128c09f | 1865 | * readonly property, it means that it was not |
428870ff | 1866 | * present. |
b128c09f BB |
1867 | */ |
1868 | if (zfs_prop_readonly(prop) && | |
428870ff BB |
1869 | *source != NULL && (*source)[0] == '\0') { |
1870 | *source = NULL; | |
b128c09f | 1871 | } |
34dc7c2f BB |
1872 | break; |
1873 | ||
1874 | case PROP_TYPE_STRING: | |
1875 | default: | |
1876 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
1877 | "cannot get non-numeric property")); | |
1878 | return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, | |
1879 | dgettext(TEXT_DOMAIN, "internal error"))); | |
1880 | } | |
1881 | } | |
1882 | ||
1883 | return (0); | |
1884 | } | |
1885 | ||
1886 | /* | |
1887 | * Calculate the source type, given the raw source string. | |
1888 | */ | |
1889 | static void | |
1890 | get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, | |
1891 | char *statbuf, size_t statlen) | |
1892 | { | |
1893 | if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) | |
1894 | return; | |
1895 | ||
1896 | if (source == NULL) { | |
1897 | *srctype = ZPROP_SRC_NONE; | |
1898 | } else if (source[0] == '\0') { | |
1899 | *srctype = ZPROP_SRC_DEFAULT; | |
428870ff BB |
1900 | } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { |
1901 | *srctype = ZPROP_SRC_RECEIVED; | |
34dc7c2f BB |
1902 | } else { |
1903 | if (strcmp(source, zhp->zfs_name) == 0) { | |
1904 | *srctype = ZPROP_SRC_LOCAL; | |
1905 | } else { | |
1906 | (void) strlcpy(statbuf, source, statlen); | |
1907 | *srctype = ZPROP_SRC_INHERITED; | |
1908 | } | |
1909 | } | |
1910 | ||
1911 | } | |
1912 | ||
428870ff BB |
1913 | int |
1914 | zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, | |
1915 | size_t proplen, boolean_t literal) | |
1916 | { | |
1917 | zfs_prop_t prop; | |
1918 | int err = 0; | |
1919 | ||
1920 | if (zhp->zfs_recvd_props == NULL) | |
1921 | if (get_recvd_props_ioctl(zhp) != 0) | |
1922 | return (-1); | |
1923 | ||
1924 | prop = zfs_name_to_prop(propname); | |
1925 | ||
1926 | if (prop != ZPROP_INVAL) { | |
1927 | uint64_t cookie; | |
1928 | if (!nvlist_exists(zhp->zfs_recvd_props, propname)) | |
1929 | return (-1); | |
1930 | zfs_set_recvd_props_mode(zhp, &cookie); | |
1931 | err = zfs_prop_get(zhp, prop, propbuf, proplen, | |
1932 | NULL, NULL, 0, literal); | |
1933 | zfs_unset_recvd_props_mode(zhp, &cookie); | |
428870ff BB |
1934 | } else { |
1935 | nvlist_t *propval; | |
1936 | char *recvdval; | |
1937 | if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, | |
1938 | propname, &propval) != 0) | |
1939 | return (-1); | |
1940 | verify(nvlist_lookup_string(propval, ZPROP_VALUE, | |
1941 | &recvdval) == 0); | |
1942 | (void) strlcpy(propbuf, recvdval, proplen); | |
1943 | } | |
1944 | ||
1945 | return (err == 0 ? 0 : -1); | |
1946 | } | |
1947 | ||
330d06f9 MA |
1948 | static int |
1949 | get_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen) | |
1950 | { | |
1951 | nvlist_t *value; | |
1952 | nvpair_t *pair; | |
1953 | ||
1954 | value = zfs_get_clones_nvl(zhp); | |
1955 | if (value == NULL) | |
1956 | return (-1); | |
1957 | ||
1958 | propbuf[0] = '\0'; | |
1959 | for (pair = nvlist_next_nvpair(value, NULL); pair != NULL; | |
1960 | pair = nvlist_next_nvpair(value, pair)) { | |
1961 | if (propbuf[0] != '\0') | |
1962 | (void) strlcat(propbuf, ",", proplen); | |
1963 | (void) strlcat(propbuf, nvpair_name(pair), proplen); | |
1964 | } | |
1965 | ||
1966 | return (0); | |
1967 | } | |
1968 | ||
1969 | struct get_clones_arg { | |
1970 | uint64_t numclones; | |
1971 | nvlist_t *value; | |
1972 | const char *origin; | |
1973 | char buf[ZFS_MAXNAMELEN]; | |
1974 | }; | |
1975 | ||
1976 | int | |
1977 | get_clones_cb(zfs_handle_t *zhp, void *arg) | |
1978 | { | |
1979 | struct get_clones_arg *gca = arg; | |
1980 | ||
1981 | if (gca->numclones == 0) { | |
1982 | zfs_close(zhp); | |
1983 | return (0); | |
1984 | } | |
1985 | ||
1986 | if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf), | |
1987 | NULL, NULL, 0, B_TRUE) != 0) | |
1988 | goto out; | |
1989 | if (strcmp(gca->buf, gca->origin) == 0) { | |
1990 | if (nvlist_add_boolean(gca->value, zfs_get_name(zhp)) != 0) { | |
1991 | zfs_close(zhp); | |
1992 | return (no_memory(zhp->zfs_hdl)); | |
1993 | } | |
1994 | gca->numclones--; | |
1995 | } | |
1996 | ||
1997 | out: | |
1998 | (void) zfs_iter_children(zhp, get_clones_cb, gca); | |
1999 | zfs_close(zhp); | |
2000 | return (0); | |
2001 | } | |
2002 | ||
2003 | nvlist_t * | |
2004 | zfs_get_clones_nvl(zfs_handle_t *zhp) | |
2005 | { | |
2006 | nvlist_t *nv, *value; | |
2007 | ||
2008 | if (nvlist_lookup_nvlist(zhp->zfs_props, | |
2009 | zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) { | |
2010 | struct get_clones_arg gca; | |
2011 | ||
2012 | /* | |
2013 | * if this is a snapshot, then the kernel wasn't able | |
2014 | * to get the clones. Do it by slowly iterating. | |
2015 | */ | |
2016 | if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) | |
2017 | return (NULL); | |
2018 | if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0) | |
2019 | return (NULL); | |
2020 | if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) { | |
2021 | nvlist_free(nv); | |
2022 | return (NULL); | |
2023 | } | |
2024 | ||
2025 | gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES); | |
2026 | gca.value = value; | |
2027 | gca.origin = zhp->zfs_name; | |
2028 | ||
2029 | if (gca.numclones != 0) { | |
2030 | zfs_handle_t *root; | |
2031 | char pool[ZFS_MAXNAMELEN]; | |
2032 | char *cp = pool; | |
2033 | ||
2034 | /* get the pool name */ | |
2035 | (void) strlcpy(pool, zhp->zfs_name, sizeof (pool)); | |
2036 | (void) strsep(&cp, "/@"); | |
2037 | root = zfs_open(zhp->zfs_hdl, pool, | |
2038 | ZFS_TYPE_FILESYSTEM); | |
2039 | ||
2040 | (void) get_clones_cb(root, &gca); | |
2041 | } | |
2042 | ||
2043 | if (gca.numclones != 0 || | |
2044 | nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 || | |
2045 | nvlist_add_nvlist(zhp->zfs_props, | |
2046 | zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) { | |
2047 | nvlist_free(nv); | |
2048 | nvlist_free(value); | |
2049 | return (NULL); | |
2050 | } | |
2051 | nvlist_free(nv); | |
2052 | nvlist_free(value); | |
2053 | verify(0 == nvlist_lookup_nvlist(zhp->zfs_props, | |
2054 | zfs_prop_to_name(ZFS_PROP_CLONES), &nv)); | |
2055 | } | |
2056 | ||
2057 | verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0); | |
2058 | ||
2059 | return (value); | |
2060 | } | |
2061 | ||
34dc7c2f BB |
2062 | /* |
2063 | * Retrieve a property from the given object. If 'literal' is specified, then | |
2064 | * numbers are left as exact values. Otherwise, numbers are converted to a | |
2065 | * human-readable form. | |
2066 | * | |
2067 | * Returns 0 on success, or -1 on error. | |
2068 | */ | |
2069 | int | |
2070 | zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, | |
2071 | zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) | |
2072 | { | |
2073 | char *source = NULL; | |
2074 | uint64_t val; | |
2075 | char *str; | |
34dc7c2f | 2076 | const char *strval; |
428870ff | 2077 | boolean_t received = zfs_is_recvd_props_mode(zhp); |
34dc7c2f BB |
2078 | |
2079 | /* | |
2080 | * Check to see if this property applies to our object | |
2081 | */ | |
2082 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) | |
2083 | return (-1); | |
2084 | ||
428870ff BB |
2085 | if (received && zfs_prop_readonly(prop)) |
2086 | return (-1); | |
2087 | ||
34dc7c2f BB |
2088 | if (src) |
2089 | *src = ZPROP_SRC_NONE; | |
2090 | ||
2091 | switch (prop) { | |
2092 | case ZFS_PROP_CREATION: | |
2093 | /* | |
2094 | * 'creation' is a time_t stored in the statistics. We convert | |
2095 | * this into a string unless 'literal' is specified. | |
2096 | */ | |
2097 | { | |
2098 | val = getprop_uint64(zhp, prop, &source); | |
2099 | time_t time = (time_t)val; | |
2100 | struct tm t; | |
2101 | ||
2102 | if (literal || | |
2103 | localtime_r(&time, &t) == NULL || | |
2104 | strftime(propbuf, proplen, "%a %b %e %k:%M %Y", | |
2105 | &t) == 0) | |
b8864a23 | 2106 | (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t) val); |
34dc7c2f BB |
2107 | } |
2108 | break; | |
2109 | ||
2110 | case ZFS_PROP_MOUNTPOINT: | |
2111 | /* | |
2112 | * Getting the precise mountpoint can be tricky. | |
2113 | * | |
2114 | * - for 'none' or 'legacy', return those values. | |
34dc7c2f BB |
2115 | * - for inherited mountpoints, we want to take everything |
2116 | * after our ancestor and append it to the inherited value. | |
2117 | * | |
2118 | * If the pool has an alternate root, we want to prepend that | |
2119 | * root to any values we return. | |
2120 | */ | |
b128c09f | 2121 | |
34dc7c2f BB |
2122 | str = getprop_string(zhp, prop, &source); |
2123 | ||
b128c09f BB |
2124 | if (str[0] == '/') { |
2125 | char buf[MAXPATHLEN]; | |
2126 | char *root = buf; | |
428870ff | 2127 | const char *relpath; |
34dc7c2f | 2128 | |
428870ff BB |
2129 | /* |
2130 | * If we inherit the mountpoint, even from a dataset | |
2131 | * with a received value, the source will be the path of | |
2132 | * the dataset we inherit from. If source is | |
2133 | * ZPROP_SOURCE_VAL_RECVD, the received value is not | |
2134 | * inherited. | |
2135 | */ | |
2136 | if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { | |
2137 | relpath = ""; | |
2138 | } else { | |
2139 | relpath = zhp->zfs_name + strlen(source); | |
2140 | if (relpath[0] == '/') | |
2141 | relpath++; | |
2142 | } | |
b128c09f BB |
2143 | |
2144 | if ((zpool_get_prop(zhp->zpool_hdl, | |
2145 | ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL)) || | |
2146 | (strcmp(root, "-") == 0)) | |
2147 | root[0] = '\0'; | |
2148 | /* | |
2149 | * Special case an alternate root of '/'. This will | |
2150 | * avoid having multiple leading slashes in the | |
2151 | * mountpoint path. | |
2152 | */ | |
2153 | if (strcmp(root, "/") == 0) | |
2154 | root++; | |
2155 | ||
2156 | /* | |
2157 | * If the mountpoint is '/' then skip over this | |
2158 | * if we are obtaining either an alternate root or | |
2159 | * an inherited mountpoint. | |
2160 | */ | |
2161 | if (str[1] == '\0' && (root[0] != '\0' || | |
2162 | relpath[0] != '\0')) | |
34dc7c2f BB |
2163 | str++; |
2164 | ||
2165 | if (relpath[0] == '\0') | |
2166 | (void) snprintf(propbuf, proplen, "%s%s", | |
2167 | root, str); | |
2168 | else | |
2169 | (void) snprintf(propbuf, proplen, "%s%s%s%s", | |
2170 | root, str, relpath[0] == '@' ? "" : "/", | |
2171 | relpath); | |
2172 | } else { | |
2173 | /* 'legacy' or 'none' */ | |
2174 | (void) strlcpy(propbuf, str, proplen); | |
2175 | } | |
2176 | ||
2177 | break; | |
2178 | ||
2179 | case ZFS_PROP_ORIGIN: | |
2180 | (void) strlcpy(propbuf, getprop_string(zhp, prop, &source), | |
2181 | proplen); | |
2182 | /* | |
2183 | * If there is no parent at all, return failure to indicate that | |
2184 | * it doesn't apply to this dataset. | |
2185 | */ | |
2186 | if (propbuf[0] == '\0') | |
2187 | return (-1); | |
2188 | break; | |
2189 | ||
330d06f9 MA |
2190 | case ZFS_PROP_CLONES: |
2191 | if (get_clones_string(zhp, propbuf, proplen) != 0) | |
2192 | return (-1); | |
2193 | break; | |
2194 | ||
34dc7c2f BB |
2195 | case ZFS_PROP_QUOTA: |
2196 | case ZFS_PROP_REFQUOTA: | |
2197 | case ZFS_PROP_RESERVATION: | |
2198 | case ZFS_PROP_REFRESERVATION: | |
2199 | ||
2200 | if (get_numeric_property(zhp, prop, src, &source, &val) != 0) | |
2201 | return (-1); | |
2202 | ||
2203 | /* | |
2204 | * If quota or reservation is 0, we translate this into 'none' | |
2205 | * (unless literal is set), and indicate that it's the default | |
2206 | * value. Otherwise, we print the number nicely and indicate | |
2207 | * that its set locally. | |
2208 | */ | |
2209 | if (val == 0) { | |
2210 | if (literal) | |
2211 | (void) strlcpy(propbuf, "0", proplen); | |
2212 | else | |
2213 | (void) strlcpy(propbuf, "none", proplen); | |
2214 | } else { | |
2215 | if (literal) | |
2216 | (void) snprintf(propbuf, proplen, "%llu", | |
2217 | (u_longlong_t)val); | |
2218 | else | |
2219 | zfs_nicenum(val, propbuf, proplen); | |
2220 | } | |
2221 | break; | |
2222 | ||
f5fc4aca | 2223 | case ZFS_PROP_REFRATIO: |
34dc7c2f BB |
2224 | case ZFS_PROP_COMPRESSRATIO: |
2225 | if (get_numeric_property(zhp, prop, src, &source, &val) != 0) | |
2226 | return (-1); | |
428870ff BB |
2227 | (void) snprintf(propbuf, proplen, "%llu.%02llux", |
2228 | (u_longlong_t)(val / 100), | |
2229 | (u_longlong_t)(val % 100)); | |
34dc7c2f BB |
2230 | break; |
2231 | ||
2232 | case ZFS_PROP_TYPE: | |
2233 | switch (zhp->zfs_type) { | |
2234 | case ZFS_TYPE_FILESYSTEM: | |
2235 | str = "filesystem"; | |
2236 | break; | |
2237 | case ZFS_TYPE_VOLUME: | |
2238 | str = "volume"; | |
2239 | break; | |
2240 | case ZFS_TYPE_SNAPSHOT: | |
2241 | str = "snapshot"; | |
2242 | break; | |
2243 | default: | |
2244 | abort(); | |
2245 | } | |
2246 | (void) snprintf(propbuf, proplen, "%s", str); | |
2247 | break; | |
2248 | ||
2249 | case ZFS_PROP_MOUNTED: | |
2250 | /* | |
2251 | * The 'mounted' property is a pseudo-property that described | |
2252 | * whether the filesystem is currently mounted. Even though | |
2253 | * it's a boolean value, the typical values of "on" and "off" | |
2254 | * don't make sense, so we translate to "yes" and "no". | |
2255 | */ | |
2256 | if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, | |
2257 | src, &source, &val) != 0) | |
2258 | return (-1); | |
2259 | if (val) | |
2260 | (void) strlcpy(propbuf, "yes", proplen); | |
2261 | else | |
2262 | (void) strlcpy(propbuf, "no", proplen); | |
2263 | break; | |
2264 | ||
2265 | case ZFS_PROP_NAME: | |
2266 | /* | |
2267 | * The 'name' property is a pseudo-property derived from the | |
2268 | * dataset name. It is presented as a real property to simplify | |
2269 | * consumers. | |
2270 | */ | |
2271 | (void) strlcpy(propbuf, zhp->zfs_name, proplen); | |
2272 | break; | |
2273 | ||
428870ff BB |
2274 | case ZFS_PROP_MLSLABEL: |
2275 | { | |
d2c15e84 | 2276 | #ifdef HAVE_MLSLABEL |
428870ff BB |
2277 | m_label_t *new_sl = NULL; |
2278 | char *ascii = NULL; /* human readable label */ | |
2279 | ||
2280 | (void) strlcpy(propbuf, | |
2281 | getprop_string(zhp, prop, &source), proplen); | |
2282 | ||
2283 | if (literal || (strcasecmp(propbuf, | |
2284 | ZFS_MLSLABEL_DEFAULT) == 0)) | |
2285 | break; | |
2286 | ||
2287 | /* | |
2288 | * Try to translate the internal hex string to | |
2289 | * human-readable output. If there are any | |
2290 | * problems just use the hex string. | |
2291 | */ | |
2292 | ||
2293 | if (str_to_label(propbuf, &new_sl, MAC_LABEL, | |
2294 | L_NO_CORRECTION, NULL) == -1) { | |
2295 | m_label_free(new_sl); | |
2296 | break; | |
2297 | } | |
2298 | ||
2299 | if (label_to_str(new_sl, &ascii, M_LABEL, | |
2300 | DEF_NAMES) != 0) { | |
2301 | if (ascii) | |
2302 | free(ascii); | |
2303 | m_label_free(new_sl); | |
2304 | break; | |
2305 | } | |
2306 | m_label_free(new_sl); | |
2307 | ||
2308 | (void) strlcpy(propbuf, ascii, proplen); | |
2309 | free(ascii); | |
d2c15e84 BB |
2310 | #else |
2311 | (void) strlcpy(propbuf, | |
2312 | getprop_string(zhp, prop, &source), proplen); | |
2313 | #endif /* HAVE_MLSLABEL */ | |
428870ff BB |
2314 | } |
2315 | break; | |
2316 | ||
08b1b21d GA |
2317 | case ZFS_PROP_GUID: |
2318 | /* | |
2319 | * GUIDs are stored as numbers, but they are identifiers. | |
2320 | * We don't want them to be pretty printed, because pretty | |
2321 | * printing mangles the ID into a truncated and useless value. | |
2322 | */ | |
2323 | if (get_numeric_property(zhp, prop, src, &source, &val) != 0) | |
2324 | return (-1); | |
2325 | (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val); | |
2326 | break; | |
2327 | ||
34dc7c2f BB |
2328 | default: |
2329 | switch (zfs_prop_get_type(prop)) { | |
2330 | case PROP_TYPE_NUMBER: | |
2331 | if (get_numeric_property(zhp, prop, src, | |
2332 | &source, &val) != 0) | |
2333 | return (-1); | |
2334 | if (literal) | |
2335 | (void) snprintf(propbuf, proplen, "%llu", | |
2336 | (u_longlong_t)val); | |
2337 | else | |
2338 | zfs_nicenum(val, propbuf, proplen); | |
2339 | break; | |
2340 | ||
2341 | case PROP_TYPE_STRING: | |
2342 | (void) strlcpy(propbuf, | |
2343 | getprop_string(zhp, prop, &source), proplen); | |
2344 | break; | |
2345 | ||
2346 | case PROP_TYPE_INDEX: | |
2347 | if (get_numeric_property(zhp, prop, src, | |
2348 | &source, &val) != 0) | |
2349 | return (-1); | |
2350 | if (zfs_prop_index_to_string(prop, val, &strval) != 0) | |
2351 | return (-1); | |
2352 | (void) strlcpy(propbuf, strval, proplen); | |
2353 | break; | |
2354 | ||
2355 | default: | |
2356 | abort(); | |
2357 | } | |
2358 | } | |
2359 | ||
2360 | get_source(zhp, src, source, statbuf, statlen); | |
2361 | ||
2362 | return (0); | |
2363 | } | |
2364 | ||
2365 | /* | |
2366 | * Utility function to get the given numeric property. Does no validation that | |
2367 | * the given property is the appropriate type; should only be used with | |
2368 | * hard-coded property types. | |
2369 | */ | |
2370 | uint64_t | |
2371 | zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) | |
2372 | { | |
2373 | char *source; | |
2374 | uint64_t val; | |
2375 | ||
2376 | (void) get_numeric_property(zhp, prop, NULL, &source, &val); | |
2377 | ||
2378 | return (val); | |
2379 | } | |
2380 | ||
2381 | int | |
2382 | zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) | |
2383 | { | |
2384 | char buf[64]; | |
2385 | ||
9babb374 | 2386 | (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); |
34dc7c2f BB |
2387 | return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); |
2388 | } | |
2389 | ||
2390 | /* | |
2391 | * Similar to zfs_prop_get(), but returns the value as an integer. | |
2392 | */ | |
2393 | int | |
2394 | zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, | |
2395 | zprop_source_t *src, char *statbuf, size_t statlen) | |
2396 | { | |
2397 | char *source; | |
2398 | ||
2399 | /* | |
2400 | * Check to see if this property applies to our object | |
2401 | */ | |
2402 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { | |
2403 | return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, | |
2404 | dgettext(TEXT_DOMAIN, "cannot get property '%s'"), | |
2405 | zfs_prop_to_name(prop))); | |
2406 | } | |
2407 | ||
2408 | if (src) | |
2409 | *src = ZPROP_SRC_NONE; | |
2410 | ||
2411 | if (get_numeric_property(zhp, prop, src, &source, value) != 0) | |
2412 | return (-1); | |
2413 | ||
2414 | get_source(zhp, src, source, statbuf, statlen); | |
2415 | ||
2416 | return (0); | |
2417 | } | |
2418 | ||
be160928 | 2419 | #ifdef HAVE_IDMAP |
9babb374 BB |
2420 | static int |
2421 | idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, | |
2422 | char **domainp, idmap_rid_t *ridp) | |
2423 | { | |
9babb374 BB |
2424 | idmap_get_handle_t *get_hdl = NULL; |
2425 | idmap_stat status; | |
2426 | int err = EINVAL; | |
2427 | ||
572e2857 | 2428 | if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) |
9babb374 BB |
2429 | goto out; |
2430 | ||
2431 | if (isuser) { | |
2432 | err = idmap_get_sidbyuid(get_hdl, id, | |
2433 | IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); | |
2434 | } else { | |
2435 | err = idmap_get_sidbygid(get_hdl, id, | |
2436 | IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); | |
2437 | } | |
2438 | if (err == IDMAP_SUCCESS && | |
2439 | idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && | |
2440 | status == IDMAP_SUCCESS) | |
2441 | err = 0; | |
2442 | else | |
2443 | err = EINVAL; | |
2444 | out: | |
2445 | if (get_hdl) | |
2446 | idmap_get_destroy(get_hdl); | |
9babb374 BB |
2447 | return (err); |
2448 | } | |
be160928 | 2449 | #endif /* HAVE_IDMAP */ |
9babb374 BB |
2450 | |
2451 | /* | |
2452 | * convert the propname into parameters needed by kernel | |
2453 | * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 | |
2454 | * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 | |
ada8ec1e SC |
2455 | * Eg: groupquota@staff -> ZFS_PROP_GROUPQUOTA, "", 1234 |
2456 | * Eg: groupused@staff -> ZFS_PROP_GROUPUSED, "", 1234 | |
9babb374 BB |
2457 | */ |
2458 | static int | |
2459 | userquota_propname_decode(const char *propname, boolean_t zoned, | |
2460 | zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) | |
2461 | { | |
2462 | zfs_userquota_prop_t type; | |
ada8ec1e | 2463 | char *cp; |
9babb374 | 2464 | boolean_t isuser; |
ada8ec1e SC |
2465 | boolean_t isgroup; |
2466 | struct passwd *pw; | |
2467 | struct group *gr; | |
9babb374 BB |
2468 | |
2469 | domain[0] = '\0'; | |
2470 | ||
2471 | /* Figure out the property type ({user|group}{quota|space}) */ | |
2472 | for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { | |
2473 | if (strncmp(propname, zfs_userquota_prop_prefixes[type], | |
2474 | strlen(zfs_userquota_prop_prefixes[type])) == 0) | |
2475 | break; | |
2476 | } | |
2477 | if (type == ZFS_NUM_USERQUOTA_PROPS) | |
2478 | return (EINVAL); | |
2479 | *typep = type; | |
2480 | ||
ada8ec1e SC |
2481 | isuser = (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_USERUSED); |
2482 | isgroup = (type == ZFS_PROP_GROUPQUOTA || type == ZFS_PROP_GROUPUSED); | |
9babb374 BB |
2483 | |
2484 | cp = strchr(propname, '@') + 1; | |
2485 | ||
ada8ec1e SC |
2486 | if (isuser && (pw = getpwnam(cp)) != NULL) { |
2487 | if (zoned && getzoneid() == GLOBAL_ZONEID) | |
2488 | return (ENOENT); | |
2489 | *ridp = pw->pw_uid; | |
2490 | } else if (isgroup && (gr = getgrnam(cp)) != NULL) { | |
2491 | if (zoned && getzoneid() == GLOBAL_ZONEID) | |
2492 | return (ENOENT); | |
2493 | *ridp = gr->gr_gid; | |
2494 | } else if (strchr(cp, '@')) { | |
be160928 | 2495 | #ifdef HAVE_IDMAP |
9babb374 BB |
2496 | /* |
2497 | * It's a SID name (eg "user@domain") that needs to be | |
45d1cae3 | 2498 | * turned into S-1-domainID-RID. |
9babb374 | 2499 | */ |
45d1cae3 | 2500 | directory_error_t e; |
ada8ec1e SC |
2501 | char *numericsid = NULL; |
2502 | char *end; | |
2503 | ||
9babb374 BB |
2504 | if (zoned && getzoneid() == GLOBAL_ZONEID) |
2505 | return (ENOENT); | |
45d1cae3 BB |
2506 | if (isuser) { |
2507 | e = directory_sid_from_user_name(NULL, | |
2508 | cp, &numericsid); | |
2509 | } else { | |
2510 | e = directory_sid_from_group_name(NULL, | |
2511 | cp, &numericsid); | |
2512 | } | |
2513 | if (e != NULL) { | |
2514 | directory_error_free(e); | |
9babb374 | 2515 | return (ENOENT); |
45d1cae3 BB |
2516 | } |
2517 | if (numericsid == NULL) | |
9babb374 | 2518 | return (ENOENT); |
45d1cae3 | 2519 | cp = numericsid; |
45d1cae3 | 2520 | (void) strlcpy(domain, cp, domainlen); |
9babb374 BB |
2521 | cp = strrchr(domain, '-'); |
2522 | *cp = '\0'; | |
2523 | cp++; | |
2524 | ||
2525 | errno = 0; | |
2526 | *ridp = strtoull(cp, &end, 10); | |
ada8ec1e SC |
2527 | free(numericsid); |
2528 | ||
9babb374 BB |
2529 | if (errno != 0 || *end != '\0') |
2530 | return (EINVAL); | |
ada8ec1e SC |
2531 | #else |
2532 | return (ENOSYS); | |
2533 | #endif /* HAVE_IDMAP */ | |
9babb374 | 2534 | } else { |
be160928 | 2535 | #ifdef HAVE_IDMAP |
9babb374 | 2536 | /* It's a user/group ID (eg "12345"). */ |
ada8ec1e | 2537 | uid_t id; |
9babb374 BB |
2538 | idmap_rid_t rid; |
2539 | char *mapdomain; | |
ada8ec1e | 2540 | char *end; |
9babb374 | 2541 | |
ada8ec1e | 2542 | id = strtoul(cp, &end, 10); |
9babb374 BB |
2543 | if (*end != '\0') |
2544 | return (EINVAL); | |
2545 | if (id > MAXUID) { | |
2546 | /* It's an ephemeral ID. */ | |
2547 | if (idmap_id_to_numeric_domain_rid(id, isuser, | |
2548 | &mapdomain, &rid) != 0) | |
2549 | return (ENOENT); | |
45d1cae3 | 2550 | (void) strlcpy(domain, mapdomain, domainlen); |
9babb374 BB |
2551 | *ridp = rid; |
2552 | } else { | |
2553 | *ridp = id; | |
2554 | } | |
be160928 BB |
2555 | #else |
2556 | return (ENOSYS); | |
2557 | #endif /* HAVE_IDMAP */ | |
9babb374 BB |
2558 | } |
2559 | ||
2560 | return (0); | |
2561 | } | |
2562 | ||
2563 | static int | |
2564 | zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, | |
2565 | uint64_t *propvalue, zfs_userquota_prop_t *typep) | |
2566 | { | |
2567 | int err; | |
2598c001 | 2568 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
9babb374 | 2569 | |
330d06f9 | 2570 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
9babb374 BB |
2571 | |
2572 | err = userquota_propname_decode(propname, | |
2573 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED), | |
2574 | typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); | |
2575 | zc.zc_objset_type = *typep; | |
2576 | if (err) | |
2577 | return (err); | |
2578 | ||
2579 | err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); | |
2580 | if (err) | |
2581 | return (err); | |
2582 | ||
2583 | *propvalue = zc.zc_cookie; | |
2584 | return (0); | |
2585 | } | |
2586 | ||
2587 | int | |
2588 | zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, | |
2589 | uint64_t *propvalue) | |
2590 | { | |
2591 | zfs_userquota_prop_t type; | |
2592 | ||
2593 | return (zfs_prop_get_userquota_common(zhp, propname, propvalue, | |
2594 | &type)); | |
2595 | } | |
2596 | ||
2597 | int | |
2598 | zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, | |
2599 | char *propbuf, int proplen, boolean_t literal) | |
2600 | { | |
2601 | int err; | |
2602 | uint64_t propvalue; | |
2603 | zfs_userquota_prop_t type; | |
2604 | ||
2605 | err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, | |
2606 | &type); | |
2607 | ||
2608 | if (err) | |
2609 | return (err); | |
2610 | ||
2611 | if (literal) { | |
b8864a23 BB |
2612 | (void) snprintf(propbuf, proplen, "%llu", |
2613 | (u_longlong_t)propvalue); | |
9babb374 BB |
2614 | } else if (propvalue == 0 && |
2615 | (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { | |
2616 | (void) strlcpy(propbuf, "none", proplen); | |
2617 | } else { | |
2618 | zfs_nicenum(propvalue, propbuf, proplen); | |
2619 | } | |
2620 | return (0); | |
2621 | } | |
2622 | ||
330d06f9 MA |
2623 | int |
2624 | zfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname, | |
2625 | uint64_t *propvalue) | |
34dc7c2f | 2626 | { |
330d06f9 MA |
2627 | int err; |
2628 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
2629 | const char *snapname; | |
34dc7c2f | 2630 | |
330d06f9 | 2631 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
34dc7c2f | 2632 | |
330d06f9 MA |
2633 | snapname = strchr(propname, '@') + 1; |
2634 | if (strchr(snapname, '@')) { | |
2635 | (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); | |
2636 | } else { | |
2637 | /* snapname is the short name, append it to zhp's fsname */ | |
2638 | char *cp; | |
2639 | ||
2640 | (void) strlcpy(zc.zc_value, zhp->zfs_name, | |
2641 | sizeof (zc.zc_value)); | |
2642 | cp = strchr(zc.zc_value, '@'); | |
2643 | if (cp != NULL) | |
2644 | *cp = '\0'; | |
2645 | (void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value)); | |
2646 | (void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value)); | |
2647 | } | |
fb5f0bc8 | 2648 | |
330d06f9 MA |
2649 | err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc); |
2650 | if (err) | |
2651 | return (err); | |
fb5f0bc8 | 2652 | |
330d06f9 MA |
2653 | *propvalue = zc.zc_cookie; |
2654 | return (0); | |
fb5f0bc8 BB |
2655 | } |
2656 | ||
34dc7c2f | 2657 | int |
330d06f9 MA |
2658 | zfs_prop_get_written(zfs_handle_t *zhp, const char *propname, |
2659 | char *propbuf, int proplen, boolean_t literal) | |
34dc7c2f | 2660 | { |
330d06f9 MA |
2661 | int err; |
2662 | uint64_t propvalue; | |
34dc7c2f | 2663 | |
330d06f9 | 2664 | err = zfs_prop_get_written_int(zhp, propname, &propvalue); |
fb5f0bc8 | 2665 | |
330d06f9 MA |
2666 | if (err) |
2667 | return (err); | |
34dc7c2f | 2668 | |
330d06f9 MA |
2669 | if (literal) { |
2670 | (void) snprintf(propbuf, proplen, "%llu", (long long unsigned int)propvalue); | |
2671 | } else { | |
2672 | zfs_nicenum(propvalue, propbuf, proplen); | |
34dc7c2f | 2673 | } |
330d06f9 MA |
2674 | |
2675 | return (0); | |
34dc7c2f BB |
2676 | } |
2677 | ||
34dc7c2f | 2678 | int |
330d06f9 MA |
2679 | zfs_get_snapused_int(zfs_handle_t *firstsnap, zfs_handle_t *lastsnap, |
2680 | uint64_t *usedp) | |
34dc7c2f | 2681 | { |
330d06f9 | 2682 | int err; |
2598c001 | 2683 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f | 2684 | |
330d06f9 MA |
2685 | (void) strlcpy(zc.zc_name, lastsnap->zfs_name, sizeof (zc.zc_name)); |
2686 | (void) strlcpy(zc.zc_value, firstsnap->zfs_name, sizeof (zc.zc_value)); | |
0cee2406 | 2687 | |
330d06f9 MA |
2688 | err = ioctl(lastsnap->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_SNAPS, &zc); |
2689 | if (err) | |
2690 | return (err); | |
34dc7c2f | 2691 | |
330d06f9 | 2692 | *usedp = zc.zc_cookie; |
34dc7c2f | 2693 | |
330d06f9 | 2694 | return (0); |
34dc7c2f BB |
2695 | } |
2696 | ||
2697 | /* | |
330d06f9 | 2698 | * Returns the name of the given zfs handle. |
34dc7c2f | 2699 | */ |
330d06f9 MA |
2700 | const char * |
2701 | zfs_get_name(const zfs_handle_t *zhp) | |
34dc7c2f | 2702 | { |
330d06f9 MA |
2703 | return (zhp->zfs_name); |
2704 | } | |
34dc7c2f | 2705 | |
330d06f9 MA |
2706 | /* |
2707 | * Returns the type of the given zfs handle. | |
2708 | */ | |
2709 | zfs_type_t | |
2710 | zfs_get_type(const zfs_handle_t *zhp) | |
2711 | { | |
2712 | return (zhp->zfs_type); | |
34dc7c2f BB |
2713 | } |
2714 | ||
428870ff BB |
2715 | /* |
2716 | * Is one dataset name a child dataset of another? | |
2717 | * | |
2718 | * Needs to handle these cases: | |
2719 | * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" | |
2720 | * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" | |
2721 | * Descendant? No. No. No. Yes. | |
2722 | */ | |
2723 | static boolean_t | |
2724 | is_descendant(const char *ds1, const char *ds2) | |
2725 | { | |
2726 | size_t d1len = strlen(ds1); | |
2727 | ||
2728 | /* ds2 can't be a descendant if it's smaller */ | |
2729 | if (strlen(ds2) < d1len) | |
2730 | return (B_FALSE); | |
2731 | ||
2732 | /* otherwise, compare strings and verify that there's a '/' char */ | |
2733 | return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); | |
2734 | } | |
2735 | ||
34dc7c2f BB |
2736 | /* |
2737 | * Given a complete name, return just the portion that refers to the parent. | |
330d06f9 MA |
2738 | * Will return -1 if there is no parent (path is just the name of the |
2739 | * pool). | |
34dc7c2f BB |
2740 | */ |
2741 | static int | |
2742 | parent_name(const char *path, char *buf, size_t buflen) | |
2743 | { | |
330d06f9 | 2744 | char *slashp; |
34dc7c2f | 2745 | |
330d06f9 | 2746 | (void) strlcpy(buf, path, buflen); |
34dc7c2f | 2747 | |
330d06f9 MA |
2748 | if ((slashp = strrchr(buf, '/')) == NULL) |
2749 | return (-1); | |
2750 | *slashp = '\0'; | |
34dc7c2f BB |
2751 | |
2752 | return (0); | |
2753 | } | |
2754 | ||
2755 | /* | |
2756 | * If accept_ancestor is false, then check to make sure that the given path has | |
2757 | * a parent, and that it exists. If accept_ancestor is true, then find the | |
2758 | * closest existing ancestor for the given path. In prefixlen return the | |
2759 | * length of already existing prefix of the given path. We also fetch the | |
2760 | * 'zoned' property, which is used to validate property settings when creating | |
2761 | * new datasets. | |
2762 | */ | |
2763 | static int | |
2764 | check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, | |
2765 | boolean_t accept_ancestor, int *prefixlen) | |
2766 | { | |
2598c001 | 2767 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2768 | char parent[ZFS_MAXNAMELEN]; |
2769 | char *slash; | |
2770 | zfs_handle_t *zhp; | |
2771 | char errbuf[1024]; | |
428870ff | 2772 | uint64_t is_zoned; |
34dc7c2f | 2773 | |
fb5f0bc8 BB |
2774 | (void) snprintf(errbuf, sizeof (errbuf), |
2775 | dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); | |
34dc7c2f BB |
2776 | |
2777 | /* get parent, and check to see if this is just a pool */ | |
2778 | if (parent_name(path, parent, sizeof (parent)) != 0) { | |
2779 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2780 | "missing dataset name")); | |
2781 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
2782 | } | |
2783 | ||
2784 | /* check to see if the pool exists */ | |
2785 | if ((slash = strchr(parent, '/')) == NULL) | |
2786 | slash = parent + strlen(parent); | |
2787 | (void) strncpy(zc.zc_name, parent, slash - parent); | |
2788 | zc.zc_name[slash - parent] = '\0'; | |
2789 | if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && | |
2790 | errno == ENOENT) { | |
2791 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2792 | "no such pool '%s'"), zc.zc_name); | |
2793 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2794 | } | |
2795 | ||
2796 | /* check to see if the parent dataset exists */ | |
2797 | while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { | |
2798 | if (errno == ENOENT && accept_ancestor) { | |
2799 | /* | |
2800 | * Go deeper to find an ancestor, give up on top level. | |
2801 | */ | |
2802 | if (parent_name(parent, parent, sizeof (parent)) != 0) { | |
2803 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2804 | "no such pool '%s'"), zc.zc_name); | |
2805 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2806 | } | |
2807 | } else if (errno == ENOENT) { | |
2808 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2809 | "parent does not exist")); | |
2810 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2811 | } else | |
2812 | return (zfs_standard_error(hdl, errno, errbuf)); | |
2813 | } | |
2814 | ||
428870ff BB |
2815 | is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); |
2816 | if (zoned != NULL) | |
2817 | *zoned = is_zoned; | |
2818 | ||
34dc7c2f | 2819 | /* we are in a non-global zone, but parent is in the global zone */ |
428870ff | 2820 | if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { |
34dc7c2f BB |
2821 | (void) zfs_standard_error(hdl, EPERM, errbuf); |
2822 | zfs_close(zhp); | |
2823 | return (-1); | |
2824 | } | |
2825 | ||
2826 | /* make sure parent is a filesystem */ | |
2827 | if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { | |
2828 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2829 | "parent is not a filesystem")); | |
2830 | (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); | |
2831 | zfs_close(zhp); | |
2832 | return (-1); | |
2833 | } | |
2834 | ||
2835 | zfs_close(zhp); | |
2836 | if (prefixlen != NULL) | |
2837 | *prefixlen = strlen(parent); | |
2838 | return (0); | |
2839 | } | |
2840 | ||
2841 | /* | |
2842 | * Finds whether the dataset of the given type(s) exists. | |
2843 | */ | |
2844 | boolean_t | |
2845 | zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) | |
2846 | { | |
2847 | zfs_handle_t *zhp; | |
2848 | ||
2849 | if (!zfs_validate_name(hdl, path, types, B_FALSE)) | |
2850 | return (B_FALSE); | |
2851 | ||
2852 | /* | |
2853 | * Try to get stats for the dataset, which will tell us if it exists. | |
2854 | */ | |
2855 | if ((zhp = make_dataset_handle(hdl, path)) != NULL) { | |
2856 | int ds_type = zhp->zfs_type; | |
2857 | ||
2858 | zfs_close(zhp); | |
2859 | if (types & ds_type) | |
2860 | return (B_TRUE); | |
2861 | } | |
2862 | return (B_FALSE); | |
2863 | } | |
2864 | ||
2865 | /* | |
2866 | * Given a path to 'target', create all the ancestors between | |
2867 | * the prefixlen portion of the path, and the target itself. | |
2868 | * Fail if the initial prefixlen-ancestor does not already exist. | |
2869 | */ | |
2870 | int | |
2871 | create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) | |
2872 | { | |
2873 | zfs_handle_t *h; | |
2874 | char *cp; | |
2875 | const char *opname; | |
2876 | ||
2877 | /* make sure prefix exists */ | |
2878 | cp = target + prefixlen; | |
2879 | if (*cp != '/') { | |
2880 | assert(strchr(cp, '/') == NULL); | |
2881 | h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); | |
2882 | } else { | |
2883 | *cp = '\0'; | |
2884 | h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); | |
2885 | *cp = '/'; | |
2886 | } | |
2887 | if (h == NULL) | |
2888 | return (-1); | |
2889 | zfs_close(h); | |
2890 | ||
2891 | /* | |
2892 | * Attempt to create, mount, and share any ancestor filesystems, | |
2893 | * up to the prefixlen-long one. | |
2894 | */ | |
2895 | for (cp = target + prefixlen + 1; | |
c65aa5b2 | 2896 | (cp = strchr(cp, '/')); *cp = '/', cp++) { |
34dc7c2f BB |
2897 | char *logstr; |
2898 | ||
2899 | *cp = '\0'; | |
2900 | ||
2901 | h = make_dataset_handle(hdl, target); | |
2902 | if (h) { | |
2903 | /* it already exists, nothing to do here */ | |
2904 | zfs_close(h); | |
2905 | continue; | |
2906 | } | |
2907 | ||
2908 | logstr = hdl->libzfs_log_str; | |
2909 | hdl->libzfs_log_str = NULL; | |
2910 | if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, | |
2911 | NULL) != 0) { | |
2912 | hdl->libzfs_log_str = logstr; | |
2913 | opname = dgettext(TEXT_DOMAIN, "create"); | |
2914 | goto ancestorerr; | |
2915 | } | |
2916 | ||
2917 | hdl->libzfs_log_str = logstr; | |
2918 | h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); | |
2919 | if (h == NULL) { | |
2920 | opname = dgettext(TEXT_DOMAIN, "open"); | |
2921 | goto ancestorerr; | |
2922 | } | |
2923 | ||
2924 | if (zfs_mount(h, NULL, 0) != 0) { | |
2925 | opname = dgettext(TEXT_DOMAIN, "mount"); | |
2926 | goto ancestorerr; | |
2927 | } | |
2928 | ||
2929 | if (zfs_share(h) != 0) { | |
2930 | opname = dgettext(TEXT_DOMAIN, "share"); | |
2931 | goto ancestorerr; | |
2932 | } | |
2933 | ||
2934 | zfs_close(h); | |
2935 | } | |
2936 | ||
2937 | return (0); | |
2938 | ||
2939 | ancestorerr: | |
2940 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2941 | "failed to %s ancestor '%s'"), opname, target); | |
2942 | return (-1); | |
2943 | } | |
2944 | ||
2945 | /* | |
2946 | * Creates non-existing ancestors of the given path. | |
2947 | */ | |
2948 | int | |
2949 | zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) | |
2950 | { | |
2951 | int prefix; | |
34dc7c2f | 2952 | char *path_copy; |
d4ed6673 | 2953 | int rc = 0; |
34dc7c2f | 2954 | |
428870ff | 2955 | if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) |
34dc7c2f BB |
2956 | return (-1); |
2957 | ||
2958 | if ((path_copy = strdup(path)) != NULL) { | |
2959 | rc = create_parents(hdl, path_copy, prefix); | |
2960 | free(path_copy); | |
2961 | } | |
2962 | if (path_copy == NULL || rc != 0) | |
2963 | return (-1); | |
2964 | ||
2965 | return (0); | |
2966 | } | |
2967 | ||
2968 | /* | |
2969 | * Create a new filesystem or volume. | |
2970 | */ | |
2971 | int | |
2972 | zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, | |
2973 | nvlist_t *props) | |
2974 | { | |
2598c001 | 2975 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2976 | int ret; |
2977 | uint64_t size = 0; | |
2978 | uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); | |
2979 | char errbuf[1024]; | |
2980 | uint64_t zoned; | |
2981 | ||
2982 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2983 | "cannot create '%s'"), path); | |
2984 | ||
2985 | /* validate the path, taking care to note the extended error message */ | |
2986 | if (!zfs_validate_name(hdl, path, type, B_TRUE)) | |
2987 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
2988 | ||
2989 | /* validate parents exist */ | |
2990 | if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) | |
2991 | return (-1); | |
2992 | ||
2993 | /* | |
2994 | * The failure modes when creating a dataset of a different type over | |
2995 | * one that already exists is a little strange. In particular, if you | |
2996 | * try to create a dataset on top of an existing dataset, the ioctl() | |
2997 | * will return ENOENT, not EEXIST. To prevent this from happening, we | |
2998 | * first try to see if the dataset exists. | |
2999 | */ | |
3000 | (void) strlcpy(zc.zc_name, path, sizeof (zc.zc_name)); | |
3001 | if (zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) { | |
3002 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3003 | "dataset already exists")); | |
3004 | return (zfs_error(hdl, EZFS_EXISTS, errbuf)); | |
3005 | } | |
3006 | ||
3007 | if (type == ZFS_TYPE_VOLUME) | |
3008 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3009 | else | |
3010 | zc.zc_objset_type = DMU_OST_ZFS; | |
3011 | ||
b128c09f | 3012 | if (props && (props = zfs_valid_proplist(hdl, type, props, |
34dc7c2f BB |
3013 | zoned, NULL, errbuf)) == 0) |
3014 | return (-1); | |
3015 | ||
3016 | if (type == ZFS_TYPE_VOLUME) { | |
3017 | /* | |
3018 | * If we are creating a volume, the size and block size must | |
3019 | * satisfy a few restraints. First, the blocksize must be a | |
3020 | * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the | |
3021 | * volsize must be a multiple of the block size, and cannot be | |
3022 | * zero. | |
3023 | */ | |
3024 | if (props == NULL || nvlist_lookup_uint64(props, | |
3025 | zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { | |
3026 | nvlist_free(props); | |
3027 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3028 | "missing volume size")); | |
3029 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
3030 | } | |
3031 | ||
3032 | if ((ret = nvlist_lookup_uint64(props, | |
3033 | zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), | |
3034 | &blocksize)) != 0) { | |
3035 | if (ret == ENOENT) { | |
3036 | blocksize = zfs_prop_default_numeric( | |
3037 | ZFS_PROP_VOLBLOCKSIZE); | |
3038 | } else { | |
3039 | nvlist_free(props); | |
3040 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3041 | "missing volume block size")); | |
3042 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
3043 | } | |
3044 | } | |
3045 | ||
3046 | if (size == 0) { | |
3047 | nvlist_free(props); | |
3048 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3049 | "volume size cannot be zero")); | |
3050 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
3051 | } | |
3052 | ||
3053 | if (size % blocksize != 0) { | |
3054 | nvlist_free(props); | |
3055 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3056 | "volume size must be a multiple of volume block " | |
3057 | "size")); | |
3058 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
3059 | } | |
3060 | } | |
3061 | ||
3062 | if (props && zcmd_write_src_nvlist(hdl, &zc, props) != 0) | |
3063 | return (-1); | |
3064 | nvlist_free(props); | |
3065 | ||
3066 | /* create the dataset */ | |
3067 | ret = zfs_ioctl(hdl, ZFS_IOC_CREATE, &zc); | |
3068 | ||
d603ed6c BB |
3069 | if (ret == 0 && type == ZFS_TYPE_VOLUME) { |
3070 | ret = zvol_create_link(hdl, path); | |
3071 | if (ret) { | |
3072 | (void) zfs_standard_error(hdl, errno, | |
3073 | dgettext(TEXT_DOMAIN, | |
3074 | "Volume successfully created, but device links " | |
3075 | "were not created")); | |
3076 | zcmd_free_nvlists(&zc); | |
3077 | return (-1); | |
3078 | } | |
3079 | } | |
3080 | ||
34dc7c2f BB |
3081 | zcmd_free_nvlists(&zc); |
3082 | ||
3083 | /* check for failure */ | |
3084 | if (ret != 0) { | |
3085 | char parent[ZFS_MAXNAMELEN]; | |
3086 | (void) parent_name(path, parent, sizeof (parent)); | |
3087 | ||
3088 | switch (errno) { | |
3089 | case ENOENT: | |
3090 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3091 | "no such parent '%s'"), parent); | |
3092 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
3093 | ||
3094 | case EINVAL: | |
3095 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3096 | "parent '%s' is not a filesystem"), parent); | |
3097 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3098 | ||
3099 | case EDOM: | |
3100 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3101 | "volume block size must be power of 2 from " | |
3102 | "%u to %uk"), | |
3103 | (uint_t)SPA_MINBLOCKSIZE, | |
3104 | (uint_t)SPA_MAXBLOCKSIZE >> 10); | |
3105 | ||
3106 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
3107 | ||
3108 | case ENOTSUP: | |
3109 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3110 | "pool must be upgraded to set this " | |
3111 | "property or value")); | |
3112 | return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); | |
3113 | #ifdef _ILP32 | |
3114 | case EOVERFLOW: | |
3115 | /* | |
3116 | * This platform can't address a volume this big. | |
3117 | */ | |
3118 | if (type == ZFS_TYPE_VOLUME) | |
3119 | return (zfs_error(hdl, EZFS_VOLTOOBIG, | |
3120 | errbuf)); | |
3121 | #endif | |
3122 | /* FALLTHROUGH */ | |
3123 | default: | |
3124 | return (zfs_standard_error(hdl, errno, errbuf)); | |
3125 | } | |
3126 | } | |
3127 | ||
3128 | return (0); | |
3129 | } | |
3130 | ||
3131 | /* | |
3132 | * Destroys the given dataset. The caller must make sure that the filesystem | |
e956d651 CS |
3133 | * isn't mounted, and that there are no active dependents. If the file system |
3134 | * does not exist this function does nothing. | |
34dc7c2f BB |
3135 | */ |
3136 | int | |
45d1cae3 | 3137 | zfs_destroy(zfs_handle_t *zhp, boolean_t defer) |
34dc7c2f | 3138 | { |
2598c001 | 3139 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3140 | |
3141 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3142 | ||
3143 | if (ZFS_IS_VOLUME(zhp)) { | |
d603ed6c BB |
3144 | if (zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0) |
3145 | return (-1); | |
3146 | ||
34dc7c2f BB |
3147 | zc.zc_objset_type = DMU_OST_ZVOL; |
3148 | } else { | |
3149 | zc.zc_objset_type = DMU_OST_ZFS; | |
3150 | } | |
3151 | ||
45d1cae3 | 3152 | zc.zc_defer_destroy = defer; |
e956d651 CS |
3153 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0 && |
3154 | errno != ENOENT) { | |
34dc7c2f BB |
3155 | return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, |
3156 | dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), | |
3157 | zhp->zfs_name)); | |
3158 | } | |
3159 | ||
3160 | remove_mountpoint(zhp); | |
3161 | ||
3162 | return (0); | |
3163 | } | |
3164 | ||
3165 | struct destroydata { | |
330d06f9 MA |
3166 | nvlist_t *nvl; |
3167 | const char *snapname; | |
34dc7c2f BB |
3168 | }; |
3169 | ||
3170 | static int | |
428870ff | 3171 | zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) |
34dc7c2f BB |
3172 | { |
3173 | struct destroydata *dd = arg; | |
3174 | zfs_handle_t *szhp; | |
3175 | char name[ZFS_MAXNAMELEN]; | |
428870ff | 3176 | int rv = 0; |
34dc7c2f | 3177 | |
330d06f9 MA |
3178 | (void) snprintf(name, sizeof (name), |
3179 | "%s@%s", zhp->zfs_name, dd->snapname); | |
34dc7c2f BB |
3180 | |
3181 | szhp = make_dataset_handle(zhp->zfs_hdl, name); | |
3182 | if (szhp) { | |
330d06f9 | 3183 | verify(nvlist_add_boolean(dd->nvl, name) == 0); |
34dc7c2f BB |
3184 | zfs_close(szhp); |
3185 | } | |
3186 | ||
d603ed6c BB |
3187 | if (zhp->zfs_type == ZFS_TYPE_VOLUME) { |
3188 | (void) zvol_remove_link(zhp->zfs_hdl, name); | |
3189 | /* | |
3190 | * NB: this is simply a best-effort. We don't want to | |
3191 | * return an error, because then we wouldn't visit all | |
3192 | * the volumes. | |
3193 | */ | |
3194 | } | |
3195 | ||
330d06f9 MA |
3196 | rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd); |
3197 | zfs_close(zhp); | |
34dc7c2f BB |
3198 | return (rv); |
3199 | } | |
3200 | ||
3201 | /* | |
3202 | * Destroys all snapshots with the given name in zhp & descendants. | |
3203 | */ | |
3204 | int | |
45d1cae3 | 3205 | zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) |
34dc7c2f | 3206 | { |
34dc7c2f BB |
3207 | int ret; |
3208 | struct destroydata dd = { 0 }; | |
3209 | ||
3210 | dd.snapname = snapname; | |
330d06f9 MA |
3211 | verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); |
3212 | (void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd); | |
34dc7c2f | 3213 | |
330d06f9 MA |
3214 | if (nvlist_next_nvpair(dd.nvl, NULL) == NULL) { |
3215 | ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, | |
34dc7c2f | 3216 | dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), |
330d06f9 MA |
3217 | zhp->zfs_name, snapname); |
3218 | } else { | |
3219 | ret = zfs_destroy_snaps_nvl(zhp, dd.nvl, defer); | |
34dc7c2f | 3220 | } |
330d06f9 MA |
3221 | nvlist_free(dd.nvl); |
3222 | return (ret); | |
3223 | } | |
3224 | ||
3225 | /* | |
3226 | * Destroys all the snapshots named in the nvlist. They must be underneath | |
3227 | * the zhp (either snapshots of it, or snapshots of its descendants). | |
3228 | */ | |
3229 | int | |
3230 | zfs_destroy_snaps_nvl(zfs_handle_t *zhp, nvlist_t *snaps, boolean_t defer) | |
3231 | { | |
3232 | int ret; | |
3233 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
34dc7c2f BB |
3234 | |
3235 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
330d06f9 MA |
3236 | if (zcmd_write_src_nvlist(zhp->zfs_hdl, &zc, snaps) != 0) |
3237 | return (-1); | |
45d1cae3 | 3238 | zc.zc_defer_destroy = defer; |
34dc7c2f | 3239 | |
330d06f9 | 3240 | ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY_SNAPS_NVL, &zc); |
34dc7c2f BB |
3241 | if (ret != 0) { |
3242 | char errbuf[1024]; | |
3243 | ||
3244 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
330d06f9 | 3245 | "cannot destroy snapshots in %s"), zc.zc_name); |
34dc7c2f BB |
3246 | |
3247 | switch (errno) { | |
3248 | case EEXIST: | |
3249 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3250 | "snapshot is cloned")); | |
3251 | return (zfs_error(zhp->zfs_hdl, EZFS_EXISTS, errbuf)); | |
3252 | ||
3253 | default: | |
3254 | return (zfs_standard_error(zhp->zfs_hdl, errno, | |
3255 | errbuf)); | |
3256 | } | |
3257 | } | |
3258 | ||
3259 | return (0); | |
3260 | } | |
3261 | ||
3262 | /* | |
3263 | * Clones the given dataset. The target must be of the same type as the source. | |
3264 | */ | |
3265 | int | |
3266 | zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) | |
3267 | { | |
2598c001 | 3268 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3269 | char parent[ZFS_MAXNAMELEN]; |
3270 | int ret; | |
3271 | char errbuf[1024]; | |
3272 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
3273 | zfs_type_t type; | |
3274 | uint64_t zoned; | |
3275 | ||
3276 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
3277 | ||
3278 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3279 | "cannot create '%s'"), target); | |
3280 | ||
330d06f9 | 3281 | /* validate the target/clone name */ |
34dc7c2f BB |
3282 | if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) |
3283 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3284 | ||
3285 | /* validate parents exist */ | |
3286 | if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) | |
3287 | return (-1); | |
3288 | ||
3289 | (void) parent_name(target, parent, sizeof (parent)); | |
3290 | ||
3291 | /* do the clone */ | |
3292 | if (ZFS_IS_VOLUME(zhp)) { | |
3293 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3294 | type = ZFS_TYPE_VOLUME; | |
3295 | } else { | |
3296 | zc.zc_objset_type = DMU_OST_ZFS; | |
3297 | type = ZFS_TYPE_FILESYSTEM; | |
3298 | } | |
3299 | ||
3300 | if (props) { | |
b128c09f BB |
3301 | if ((props = zfs_valid_proplist(hdl, type, props, zoned, |
3302 | zhp, errbuf)) == NULL) | |
34dc7c2f BB |
3303 | return (-1); |
3304 | ||
3305 | if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { | |
3306 | nvlist_free(props); | |
3307 | return (-1); | |
3308 | } | |
3309 | ||
3310 | nvlist_free(props); | |
3311 | } | |
3312 | ||
3313 | (void) strlcpy(zc.zc_name, target, sizeof (zc.zc_name)); | |
3314 | (void) strlcpy(zc.zc_value, zhp->zfs_name, sizeof (zc.zc_value)); | |
3315 | ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_CREATE, &zc); | |
3316 | ||
3317 | zcmd_free_nvlists(&zc); | |
3318 | ||
3319 | if (ret != 0) { | |
3320 | switch (errno) { | |
3321 | ||
3322 | case ENOENT: | |
3323 | /* | |
3324 | * The parent doesn't exist. We should have caught this | |
3325 | * above, but there may a race condition that has since | |
3326 | * destroyed the parent. | |
3327 | * | |
3328 | * At this point, we don't know whether it's the source | |
3329 | * that doesn't exist anymore, or whether the target | |
3330 | * dataset doesn't exist. | |
3331 | */ | |
3332 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3333 | "no such parent '%s'"), parent); | |
3334 | return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); | |
3335 | ||
3336 | case EXDEV: | |
3337 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3338 | "source and target pools differ")); | |
3339 | return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, | |
3340 | errbuf)); | |
3341 | ||
3342 | default: | |
3343 | return (zfs_standard_error(zhp->zfs_hdl, errno, | |
3344 | errbuf)); | |
3345 | } | |
d603ed6c BB |
3346 | } else if (ZFS_IS_VOLUME(zhp)) { |
3347 | ret = zvol_create_link(zhp->zfs_hdl, target); | |
34dc7c2f BB |
3348 | } |
3349 | ||
3350 | return (ret); | |
3351 | } | |
3352 | ||
d603ed6c BB |
3353 | typedef struct promote_data { |
3354 | char cb_mountpoint[MAXPATHLEN]; | |
3355 | const char *cb_target; | |
3356 | const char *cb_errbuf; | |
3357 | uint64_t cb_pivot_txg; | |
3358 | } promote_data_t; | |
3359 | ||
3360 | static int | |
3361 | promote_snap_cb(zfs_handle_t *zhp, void *data) | |
3362 | { | |
3363 | promote_data_t *pd = data; | |
3364 | zfs_handle_t *szhp; | |
3365 | char snapname[MAXPATHLEN]; | |
3366 | int rv = 0; | |
3367 | ||
3368 | /* We don't care about snapshots after the pivot point */ | |
3369 | if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > pd->cb_pivot_txg) { | |
3370 | zfs_close(zhp); | |
3371 | return (0); | |
3372 | } | |
3373 | ||
3374 | /* Remove the device link if it's a zvol. */ | |
3375 | if (ZFS_IS_VOLUME(zhp)) | |
3376 | (void) zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name); | |
3377 | ||
3378 | /* Check for conflicting names */ | |
3379 | (void) strlcpy(snapname, pd->cb_target, sizeof (snapname)); | |
3380 | (void) strlcat(snapname, strchr(zhp->zfs_name, '@'), sizeof (snapname)); | |
3381 | szhp = make_dataset_handle(zhp->zfs_hdl, snapname); | |
3382 | if (szhp != NULL) { | |
3383 | zfs_close(szhp); | |
3384 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3385 | "snapshot name '%s' from origin \n" | |
3386 | "conflicts with '%s' from target"), | |
3387 | zhp->zfs_name, snapname); | |
3388 | rv = zfs_error(zhp->zfs_hdl, EZFS_EXISTS, pd->cb_errbuf); | |
3389 | } | |
3390 | zfs_close(zhp); | |
3391 | return (rv); | |
3392 | } | |
3393 | ||
3394 | static int | |
3395 | promote_snap_done_cb(zfs_handle_t *zhp, void *data) | |
3396 | { | |
3397 | promote_data_t *pd = data; | |
3398 | ||
3399 | /* We don't care about snapshots after the pivot point */ | |
3400 | if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) <= pd->cb_pivot_txg) { | |
3401 | /* Create the device link if it's a zvol. */ | |
3402 | if (ZFS_IS_VOLUME(zhp)) | |
3403 | (void) zvol_create_link(zhp->zfs_hdl, zhp->zfs_name); | |
3404 | } | |
3405 | ||
3406 | zfs_close(zhp); | |
3407 | return (0); | |
3408 | } | |
3409 | ||
34dc7c2f BB |
3410 | /* |
3411 | * Promotes the given clone fs to be the clone parent. | |
3412 | */ | |
3413 | int | |
3414 | zfs_promote(zfs_handle_t *zhp) | |
3415 | { | |
3416 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
2598c001 | 3417 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f | 3418 | char parent[MAXPATHLEN]; |
d603ed6c | 3419 | char *cp; |
34dc7c2f | 3420 | int ret; |
d603ed6c BB |
3421 | zfs_handle_t *pzhp; |
3422 | promote_data_t pd; | |
34dc7c2f BB |
3423 | char errbuf[1024]; |
3424 | ||
3425 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3426 | "cannot promote '%s'"), zhp->zfs_name); | |
3427 | ||
3428 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { | |
3429 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3430 | "snapshots can not be promoted")); | |
3431 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3432 | } | |
3433 | ||
3434 | (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); | |
3435 | if (parent[0] == '\0') { | |
3436 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3437 | "not a cloned filesystem")); | |
3438 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3439 | } | |
d603ed6c BB |
3440 | cp = strchr(parent, '@'); |
3441 | *cp = '\0'; | |
3442 | ||
3443 | /* Walk the snapshots we will be moving */ | |
3444 | pzhp = zfs_open(hdl, zhp->zfs_dmustats.dds_origin, ZFS_TYPE_SNAPSHOT); | |
3445 | if (pzhp == NULL) | |
3446 | return (-1); | |
3447 | pd.cb_pivot_txg = zfs_prop_get_int(pzhp, ZFS_PROP_CREATETXG); | |
3448 | zfs_close(pzhp); | |
3449 | pd.cb_target = zhp->zfs_name; | |
3450 | pd.cb_errbuf = errbuf; | |
3451 | pzhp = zfs_open(hdl, parent, ZFS_TYPE_DATASET); | |
3452 | if (pzhp == NULL) | |
3453 | return (-1); | |
3454 | (void) zfs_prop_get(pzhp, ZFS_PROP_MOUNTPOINT, pd.cb_mountpoint, | |
3455 | sizeof (pd.cb_mountpoint), NULL, NULL, 0, FALSE); | |
0cee2406 | 3456 | ret = zfs_iter_snapshots(pzhp, B_FALSE, promote_snap_cb, &pd); |
d603ed6c BB |
3457 | if (ret != 0) { |
3458 | zfs_close(pzhp); | |
3459 | return (-1); | |
3460 | } | |
34dc7c2f | 3461 | |
d603ed6c | 3462 | /* issue the ioctl */ |
34dc7c2f BB |
3463 | (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, |
3464 | sizeof (zc.zc_value)); | |
3465 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3466 | ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); | |
3467 | ||
3468 | if (ret != 0) { | |
3469 | int save_errno = errno; | |
3470 | ||
0cee2406 PJD |
3471 | (void) zfs_iter_snapshots(pzhp, B_FALSE, promote_snap_done_cb, |
3472 | &pd); | |
d603ed6c BB |
3473 | zfs_close(pzhp); |
3474 | ||
34dc7c2f BB |
3475 | switch (save_errno) { |
3476 | case EEXIST: | |
d603ed6c BB |
3477 | /* |
3478 | * There is a conflicting snapshot name. We | |
3479 | * should have caught this above, but they could | |
3480 | * have renamed something in the mean time. | |
3481 | */ | |
34dc7c2f | 3482 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
428870ff BB |
3483 | "conflicting snapshot '%s' from parent '%s'"), |
3484 | zc.zc_string, parent); | |
34dc7c2f BB |
3485 | return (zfs_error(hdl, EZFS_EXISTS, errbuf)); |
3486 | ||
3487 | default: | |
3488 | return (zfs_standard_error(hdl, save_errno, errbuf)); | |
3489 | } | |
d603ed6c | 3490 | } else { |
0cee2406 PJD |
3491 | (void) zfs_iter_snapshots(zhp, B_FALSE, promote_snap_done_cb, |
3492 | &pd); | |
34dc7c2f | 3493 | } |
d603ed6c BB |
3494 | |
3495 | zfs_close(pzhp); | |
3496 | return (ret); | |
3497 | } | |
3498 | ||
3499 | struct createdata { | |
3500 | const char *cd_snapname; | |
3501 | int cd_ifexists; | |
3502 | }; | |
3503 | ||
3504 | static int | |
3505 | zfs_create_link_cb(zfs_handle_t *zhp, void *arg) | |
3506 | { | |
3507 | struct createdata *cd = arg; | |
3508 | int ret; | |
3509 | ||
3510 | if (zhp->zfs_type == ZFS_TYPE_VOLUME) { | |
3511 | char name[MAXPATHLEN]; | |
3512 | ||
3513 | (void) strlcpy(name, zhp->zfs_name, sizeof (name)); | |
3514 | (void) strlcat(name, "@", sizeof (name)); | |
3515 | (void) strlcat(name, cd->cd_snapname, sizeof (name)); | |
3516 | (void) zvol_create_link_common(zhp->zfs_hdl, name, | |
3517 | cd->cd_ifexists); | |
3518 | /* | |
3519 | * NB: this is simply a best-effort. We don't want to | |
3520 | * return an error, because then we wouldn't visit all | |
3521 | * the volumes. | |
3522 | */ | |
3523 | } | |
3524 | ||
3525 | ret = zfs_iter_filesystems(zhp, zfs_create_link_cb, cd); | |
3526 | ||
3527 | zfs_close(zhp); | |
3528 | ||
34dc7c2f BB |
3529 | return (ret); |
3530 | } | |
3531 | ||
3532 | /* | |
3533 | * Takes a snapshot of the given dataset. | |
3534 | */ | |
3535 | int | |
b128c09f BB |
3536 | zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, |
3537 | nvlist_t *props) | |
34dc7c2f BB |
3538 | { |
3539 | const char *delim; | |
b128c09f | 3540 | char parent[ZFS_MAXNAMELEN]; |
34dc7c2f | 3541 | zfs_handle_t *zhp; |
2598c001 | 3542 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3543 | int ret; |
3544 | char errbuf[1024]; | |
3545 | ||
3546 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3547 | "cannot snapshot '%s'"), path); | |
3548 | ||
3549 | /* validate the target name */ | |
3550 | if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) | |
3551 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3552 | ||
b128c09f BB |
3553 | if (props) { |
3554 | if ((props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, | |
3555 | props, B_FALSE, NULL, errbuf)) == NULL) | |
3556 | return (-1); | |
3557 | ||
3558 | if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { | |
3559 | nvlist_free(props); | |
3560 | return (-1); | |
3561 | } | |
3562 | ||
3563 | nvlist_free(props); | |
3564 | } | |
3565 | ||
34dc7c2f BB |
3566 | /* make sure the parent exists and is of the appropriate type */ |
3567 | delim = strchr(path, '@'); | |
34dc7c2f BB |
3568 | (void) strncpy(parent, path, delim - path); |
3569 | parent[delim - path] = '\0'; | |
3570 | ||
3571 | if ((zhp = zfs_open(hdl, parent, ZFS_TYPE_FILESYSTEM | | |
3572 | ZFS_TYPE_VOLUME)) == NULL) { | |
b128c09f | 3573 | zcmd_free_nvlists(&zc); |
34dc7c2f BB |
3574 | return (-1); |
3575 | } | |
3576 | ||
3577 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3578 | (void) strlcpy(zc.zc_value, delim+1, sizeof (zc.zc_value)); | |
3579 | if (ZFS_IS_VOLUME(zhp)) | |
3580 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3581 | else | |
3582 | zc.zc_objset_type = DMU_OST_ZFS; | |
3583 | zc.zc_cookie = recursive; | |
3584 | ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SNAPSHOT, &zc); | |
3585 | ||
b128c09f BB |
3586 | zcmd_free_nvlists(&zc); |
3587 | ||
34dc7c2f BB |
3588 | /* |
3589 | * if it was recursive, the one that actually failed will be in | |
3590 | * zc.zc_name. | |
3591 | */ | |
d603ed6c | 3592 | if (ret != 0) |
34dc7c2f BB |
3593 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
3594 | "cannot create snapshot '%s@%s'"), zc.zc_name, zc.zc_value); | |
d603ed6c BB |
3595 | |
3596 | if (ret == 0 && recursive) { | |
3597 | struct createdata cd; | |
3598 | ||
3599 | cd.cd_snapname = delim + 1; | |
3600 | cd.cd_ifexists = B_FALSE; | |
3601 | (void) zfs_iter_filesystems(zhp, zfs_create_link_cb, &cd); | |
3602 | } | |
3603 | if (ret == 0 && zhp->zfs_type == ZFS_TYPE_VOLUME) { | |
3604 | ret = zvol_create_link(zhp->zfs_hdl, path); | |
3605 | if (ret != 0) { | |
3606 | (void) zfs_standard_error(hdl, errno, | |
3607 | dgettext(TEXT_DOMAIN, | |
3608 | "Volume successfully snapshotted, but device links " | |
3609 | "were not created")); | |
3610 | zfs_close(zhp); | |
3611 | return (-1); | |
3612 | } | |
428870ff | 3613 | } |
34dc7c2f | 3614 | |
d603ed6c BB |
3615 | if (ret != 0) |
3616 | (void) zfs_standard_error(hdl, errno, errbuf); | |
3617 | ||
34dc7c2f BB |
3618 | zfs_close(zhp); |
3619 | ||
3620 | return (ret); | |
3621 | } | |
3622 | ||
3623 | /* | |
3624 | * Destroy any more recent snapshots. We invoke this callback on any dependents | |
3625 | * of the snapshot first. If the 'cb_dependent' member is non-zero, then this | |
3626 | * is a dependent and we should just destroy it without checking the transaction | |
3627 | * group. | |
3628 | */ | |
3629 | typedef struct rollback_data { | |
3630 | const char *cb_target; /* the snapshot */ | |
3631 | uint64_t cb_create; /* creation time reference */ | |
3632 | boolean_t cb_error; | |
3633 | boolean_t cb_dependent; | |
3634 | boolean_t cb_force; | |
3635 | } rollback_data_t; | |
3636 | ||
3637 | static int | |
3638 | rollback_destroy(zfs_handle_t *zhp, void *data) | |
3639 | { | |
3640 | rollback_data_t *cbp = data; | |
3641 | ||
3642 | if (!cbp->cb_dependent) { | |
3643 | if (strcmp(zhp->zfs_name, cbp->cb_target) != 0 && | |
3644 | zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && | |
3645 | zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > | |
3646 | cbp->cb_create) { | |
3647 | char *logstr; | |
3648 | ||
3649 | cbp->cb_dependent = B_TRUE; | |
3650 | cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, | |
3651 | rollback_destroy, cbp); | |
3652 | cbp->cb_dependent = B_FALSE; | |
3653 | ||
3654 | logstr = zhp->zfs_hdl->libzfs_log_str; | |
3655 | zhp->zfs_hdl->libzfs_log_str = NULL; | |
45d1cae3 | 3656 | cbp->cb_error |= zfs_destroy(zhp, B_FALSE); |
34dc7c2f BB |
3657 | zhp->zfs_hdl->libzfs_log_str = logstr; |
3658 | } | |
3659 | } else { | |
3660 | /* We must destroy this clone; first unmount it */ | |
3661 | prop_changelist_t *clp; | |
3662 | ||
b128c09f | 3663 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
34dc7c2f BB |
3664 | cbp->cb_force ? MS_FORCE: 0); |
3665 | if (clp == NULL || changelist_prefix(clp) != 0) { | |
3666 | cbp->cb_error = B_TRUE; | |
3667 | zfs_close(zhp); | |
3668 | return (0); | |
3669 | } | |
45d1cae3 | 3670 | if (zfs_destroy(zhp, B_FALSE) != 0) |
34dc7c2f BB |
3671 | cbp->cb_error = B_TRUE; |
3672 | else | |
3673 | changelist_remove(clp, zhp->zfs_name); | |
3674 | (void) changelist_postfix(clp); | |
3675 | changelist_free(clp); | |
3676 | } | |
3677 | ||
3678 | zfs_close(zhp); | |
3679 | return (0); | |
3680 | } | |
3681 | ||
3682 | /* | |
3683 | * Given a dataset, rollback to a specific snapshot, discarding any | |
3684 | * data changes since then and making it the active dataset. | |
3685 | * | |
3686 | * Any snapshots more recent than the target are destroyed, along with | |
3687 | * their dependents. | |
3688 | */ | |
3689 | int | |
3690 | zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) | |
3691 | { | |
3692 | rollback_data_t cb = { 0 }; | |
3693 | int err; | |
2598c001 | 3694 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f | 3695 | boolean_t restore_resv = 0; |
d4ed6673 BB |
3696 | uint64_t old_volsize = 0, new_volsize; |
3697 | zfs_prop_t resv_prop = { 0 }; | |
34dc7c2f BB |
3698 | |
3699 | assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || | |
3700 | zhp->zfs_type == ZFS_TYPE_VOLUME); | |
3701 | ||
3702 | /* | |
3703 | * Destroy all recent snapshots and its dependends. | |
3704 | */ | |
3705 | cb.cb_force = force; | |
3706 | cb.cb_target = snap->zfs_name; | |
3707 | cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); | |
3708 | (void) zfs_iter_children(zhp, rollback_destroy, &cb); | |
3709 | ||
3710 | if (cb.cb_error) | |
3711 | return (-1); | |
3712 | ||
3713 | /* | |
3714 | * Now that we have verified that the snapshot is the latest, | |
3715 | * rollback to the given snapshot. | |
3716 | */ | |
3717 | ||
3718 | if (zhp->zfs_type == ZFS_TYPE_VOLUME) { | |
d603ed6c BB |
3719 | if (zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0) |
3720 | return (-1); | |
34dc7c2f BB |
3721 | if (zfs_which_resv_prop(zhp, &resv_prop) < 0) |
3722 | return (-1); | |
3723 | old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); | |
3724 | restore_resv = | |
3725 | (old_volsize == zfs_prop_get_int(zhp, resv_prop)); | |
3726 | } | |
3727 | ||
3728 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3729 | ||
3730 | if (ZFS_IS_VOLUME(zhp)) | |
3731 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3732 | else | |
3733 | zc.zc_objset_type = DMU_OST_ZFS; | |
3734 | ||
3735 | /* | |
3736 | * We rely on zfs_iter_children() to verify that there are no | |
3737 | * newer snapshots for the given dataset. Therefore, we can | |
3738 | * simply pass the name on to the ioctl() call. There is still | |
3739 | * an unlikely race condition where the user has taken a | |
3740 | * snapshot since we verified that this was the most recent. | |
3741 | * | |
3742 | */ | |
3743 | if ((err = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_ROLLBACK, &zc)) != 0) { | |
3744 | (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, | |
3745 | dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), | |
3746 | zhp->zfs_name); | |
3747 | return (err); | |
3748 | } | |
3749 | ||
3750 | /* | |
3751 | * For volumes, if the pre-rollback volsize matched the pre- | |
3752 | * rollback reservation and the volsize has changed then set | |
3753 | * the reservation property to the post-rollback volsize. | |
3754 | * Make a new handle since the rollback closed the dataset. | |
3755 | */ | |
3756 | if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && | |
3757 | (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { | |
d603ed6c BB |
3758 | if ((err = zvol_create_link(zhp->zfs_hdl, zhp->zfs_name))) { |
3759 | zfs_close(zhp); | |
3760 | return (err); | |
3761 | } | |
34dc7c2f BB |
3762 | if (restore_resv) { |
3763 | new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); | |
3764 | if (old_volsize != new_volsize) | |
3765 | err = zfs_prop_set_int(zhp, resv_prop, | |
3766 | new_volsize); | |
3767 | } | |
3768 | zfs_close(zhp); | |
3769 | } | |
3770 | return (err); | |
3771 | } | |
3772 | ||
34dc7c2f BB |
3773 | /* |
3774 | * Renames the given dataset. | |
3775 | */ | |
3776 | int | |
db49968e ES |
3777 | zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive, |
3778 | boolean_t force_unmount) | |
34dc7c2f BB |
3779 | { |
3780 | int ret; | |
2598c001 | 3781 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3782 | char *delim; |
3783 | prop_changelist_t *cl = NULL; | |
3784 | zfs_handle_t *zhrp = NULL; | |
3785 | char *parentname = NULL; | |
3786 | char parent[ZFS_MAXNAMELEN]; | |
3787 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
3788 | char errbuf[1024]; | |
3789 | ||
3790 | /* if we have the same exact name, just return success */ | |
3791 | if (strcmp(zhp->zfs_name, target) == 0) | |
3792 | return (0); | |
3793 | ||
3794 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3795 | "cannot rename to '%s'"), target); | |
3796 | ||
3797 | /* | |
3798 | * Make sure the target name is valid | |
3799 | */ | |
3800 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { | |
3801 | if ((strchr(target, '@') == NULL) || | |
3802 | *target == '@') { | |
3803 | /* | |
3804 | * Snapshot target name is abbreviated, | |
3805 | * reconstruct full dataset name | |
3806 | */ | |
3807 | (void) strlcpy(parent, zhp->zfs_name, | |
3808 | sizeof (parent)); | |
3809 | delim = strchr(parent, '@'); | |
3810 | if (strchr(target, '@') == NULL) | |
3811 | *(++delim) = '\0'; | |
3812 | else | |
3813 | *delim = '\0'; | |
3814 | (void) strlcat(parent, target, sizeof (parent)); | |
3815 | target = parent; | |
3816 | } else { | |
3817 | /* | |
3818 | * Make sure we're renaming within the same dataset. | |
3819 | */ | |
3820 | delim = strchr(target, '@'); | |
3821 | if (strncmp(zhp->zfs_name, target, delim - target) | |
3822 | != 0 || zhp->zfs_name[delim - target] != '@') { | |
3823 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3824 | "snapshots must be part of same " | |
3825 | "dataset")); | |
3826 | return (zfs_error(hdl, EZFS_CROSSTARGET, | |
3827 | errbuf)); | |
3828 | } | |
3829 | } | |
3830 | if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) | |
3831 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3832 | } else { | |
3833 | if (recursive) { | |
3834 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3835 | "recursive rename must be a snapshot")); | |
3836 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3837 | } | |
3838 | ||
3839 | if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) | |
3840 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
34dc7c2f BB |
3841 | |
3842 | /* validate parents */ | |
428870ff | 3843 | if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) |
34dc7c2f BB |
3844 | return (-1); |
3845 | ||
34dc7c2f BB |
3846 | /* make sure we're in the same pool */ |
3847 | verify((delim = strchr(target, '/')) != NULL); | |
3848 | if (strncmp(zhp->zfs_name, target, delim - target) != 0 || | |
3849 | zhp->zfs_name[delim - target] != '/') { | |
3850 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3851 | "datasets must be within same pool")); | |
3852 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
3853 | } | |
3854 | ||
3855 | /* new name cannot be a child of the current dataset name */ | |
428870ff | 3856 | if (is_descendant(zhp->zfs_name, target)) { |
34dc7c2f | 3857 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
428870ff | 3858 | "New dataset name cannot be a descendant of " |
34dc7c2f BB |
3859 | "current dataset name")); |
3860 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3861 | } | |
3862 | } | |
3863 | ||
3864 | (void) snprintf(errbuf, sizeof (errbuf), | |
3865 | dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); | |
3866 | ||
3867 | if (getzoneid() == GLOBAL_ZONEID && | |
3868 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { | |
3869 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3870 | "dataset is used in a non-global zone")); | |
3871 | return (zfs_error(hdl, EZFS_ZONED, errbuf)); | |
3872 | } | |
3873 | ||
3874 | if (recursive) { | |
d603ed6c | 3875 | struct destroydata dd; |
34dc7c2f BB |
3876 | |
3877 | parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); | |
3878 | if (parentname == NULL) { | |
3879 | ret = -1; | |
3880 | goto error; | |
3881 | } | |
3882 | delim = strchr(parentname, '@'); | |
3883 | *delim = '\0'; | |
3884 | zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); | |
3885 | if (zhrp == NULL) { | |
3886 | ret = -1; | |
3887 | goto error; | |
3888 | } | |
3889 | ||
d603ed6c | 3890 | dd.snapname = delim + 1; |
d603ed6c BB |
3891 | |
3892 | /* We remove any zvol links prior to renaming them */ | |
cf997d79 | 3893 | verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0); |
d603ed6c | 3894 | ret = zfs_iter_filesystems(zhrp, zfs_check_snap_cb, &dd); |
cf997d79 | 3895 | nvlist_free(dd.nvl); |
d603ed6c BB |
3896 | if (ret) { |
3897 | goto error; | |
3898 | } | |
34dc7c2f | 3899 | } else { |
db49968e ES |
3900 | if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
3901 | force_unmount ? MS_FORCE : 0)) == NULL) | |
34dc7c2f BB |
3902 | return (-1); |
3903 | ||
3904 | if (changelist_haszonedchild(cl)) { | |
3905 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3906 | "child dataset with inherited mountpoint is used " | |
3907 | "in a non-global zone")); | |
3908 | (void) zfs_error(hdl, EZFS_ZONED, errbuf); | |
d4ed6673 | 3909 | ret = -1; |
34dc7c2f BB |
3910 | goto error; |
3911 | } | |
3912 | ||
3913 | if ((ret = changelist_prefix(cl)) != 0) | |
3914 | goto error; | |
3915 | } | |
3916 | ||
3917 | if (ZFS_IS_VOLUME(zhp)) | |
3918 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3919 | else | |
3920 | zc.zc_objset_type = DMU_OST_ZFS; | |
3921 | ||
3922 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3923 | (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); | |
3924 | ||
3925 | zc.zc_cookie = recursive; | |
3926 | ||
3927 | if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { | |
3928 | /* | |
3929 | * if it was recursive, the one that actually failed will | |
3930 | * be in zc.zc_name | |
3931 | */ | |
3932 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3933 | "cannot rename '%s'"), zc.zc_name); | |
3934 | ||
3935 | if (recursive && errno == EEXIST) { | |
3936 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3937 | "a child dataset already has a snapshot " | |
3938 | "with the new name")); | |
3939 | (void) zfs_error(hdl, EZFS_EXISTS, errbuf); | |
3940 | } else { | |
3941 | (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); | |
3942 | } | |
3943 | ||
3944 | /* | |
3945 | * On failure, we still want to remount any filesystems that | |
3946 | * were previously mounted, so we don't alter the system state. | |
3947 | */ | |
d603ed6c BB |
3948 | if (recursive) { |
3949 | struct createdata cd; | |
3950 | ||
3951 | /* only create links for datasets that had existed */ | |
3952 | cd.cd_snapname = delim + 1; | |
3953 | cd.cd_ifexists = B_TRUE; | |
3954 | (void) zfs_iter_filesystems(zhrp, zfs_create_link_cb, | |
3955 | &cd); | |
3956 | } else { | |
34dc7c2f | 3957 | (void) changelist_postfix(cl); |
d603ed6c | 3958 | } |
34dc7c2f | 3959 | } else { |
d603ed6c BB |
3960 | if (recursive) { |
3961 | struct createdata cd; | |
3962 | ||
3963 | /* only create links for datasets that had existed */ | |
3964 | cd.cd_snapname = strchr(target, '@') + 1; | |
3965 | cd.cd_ifexists = B_TRUE; | |
3966 | ret = zfs_iter_filesystems(zhrp, zfs_create_link_cb, | |
3967 | &cd); | |
3968 | } else { | |
34dc7c2f BB |
3969 | changelist_rename(cl, zfs_get_name(zhp), target); |
3970 | ret = changelist_postfix(cl); | |
3971 | } | |
3972 | } | |
3973 | ||
3974 | error: | |
3975 | if (parentname) { | |
3976 | free(parentname); | |
3977 | } | |
3978 | if (zhrp) { | |
3979 | zfs_close(zhrp); | |
3980 | } | |
3981 | if (cl) { | |
3982 | changelist_free(cl); | |
3983 | } | |
3984 | return (ret); | |
3985 | } | |
3986 | ||
d603ed6c BB |
3987 | /* |
3988 | * Given a zvol dataset, issue the ioctl to create the appropriate minor node, | |
3989 | * and wait briefly for udev to create the /dev link. | |
3990 | */ | |
3991 | int | |
3992 | zvol_create_link(libzfs_handle_t *hdl, const char *dataset) | |
34dc7c2f | 3993 | { |
d603ed6c BB |
3994 | return (zvol_create_link_common(hdl, dataset, B_FALSE)); |
3995 | } | |
3996 | ||
3997 | static int | |
3998 | zvol_create_link_common(libzfs_handle_t *hdl, const char *dataset, int ifexists) | |
3999 | { | |
4000 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
4001 | char path[MAXPATHLEN]; | |
4002 | int error; | |
4003 | ||
4004 | (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); | |
4005 | ||
4006 | /* | |
4007 | * Issue the appropriate ioctl. | |
4008 | */ | |
4009 | if (ioctl(hdl->libzfs_fd, ZFS_IOC_CREATE_MINOR, &zc) != 0) { | |
4010 | switch (errno) { | |
4011 | case EEXIST: | |
4012 | /* | |
4013 | * Silently ignore the case where the link already | |
4014 | * exists. This allows 'zfs volinit' to be run multiple | |
4015 | * times without errors. | |
4016 | */ | |
4017 | return (0); | |
4018 | ||
4019 | case ENOENT: | |
4020 | /* | |
4021 | * Dataset does not exist in the kernel. If we | |
4022 | * don't care (see zfs_rename), then ignore the | |
4023 | * error quietly. | |
4024 | */ | |
4025 | if (ifexists) { | |
4026 | return (0); | |
4027 | } | |
4028 | ||
4029 | /* FALLTHROUGH */ | |
4030 | ||
4031 | default: | |
4032 | return (zfs_standard_error_fmt(hdl, errno, | |
4033 | dgettext(TEXT_DOMAIN, "cannot create device links " | |
4034 | "for '%s'"), dataset)); | |
4035 | } | |
4036 | } | |
4037 | ||
4038 | /* | |
4039 | * Wait up to 10 seconds for udev to create the device. | |
4040 | */ | |
4041 | (void) snprintf(path, sizeof (path), "%s/%s", ZVOL_DIR, dataset); | |
4042 | error = zpool_label_disk_wait(path, 10000); | |
4043 | if (error) | |
4044 | (void) printf(gettext("%s may not be immediately " | |
4045 | "available\n"), path); | |
4046 | ||
4047 | return (0); | |
4048 | } | |
4049 | ||
4050 | /* | |
4051 | * Remove a minor node for the given zvol and the associated /dev links. | |
4052 | */ | |
4053 | int | |
4054 | zvol_remove_link(libzfs_handle_t *hdl, const char *dataset) | |
4055 | { | |
4056 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
c6327b63 DV |
4057 | int timeout = 3000; /* in milliseconds */ |
4058 | int error = 0; | |
4059 | int i; | |
d603ed6c BB |
4060 | |
4061 | (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); | |
4062 | ||
c6327b63 DV |
4063 | /* |
4064 | * Due to concurrent updates by udev the device may be reported as | |
4065 | * busy. In this case don't immediately fail. Instead briefly delay | |
4066 | * and retry the ioctl() which is now likely to succeed. If unable | |
4067 | * remove the link after timeout milliseconds return the failure. | |
4068 | */ | |
4069 | for (i = 0; i < timeout; i++) { | |
4070 | error = ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc); | |
4071 | if (error && errno == EBUSY) { | |
4072 | usleep(1000); | |
4073 | continue; | |
4074 | } else { | |
4075 | break; | |
4076 | } | |
4077 | } | |
4078 | ||
4079 | if (error) { | |
d603ed6c BB |
4080 | switch (errno) { |
4081 | case ENXIO: | |
4082 | /* | |
4083 | * Silently ignore the case where the link no longer | |
4084 | * exists, so that 'zfs volfini' can be run multiple | |
4085 | * times without errors. | |
4086 | */ | |
4087 | return (0); | |
4088 | ||
4089 | default: | |
4090 | return (zfs_standard_error_fmt(hdl, errno, | |
4091 | dgettext(TEXT_DOMAIN, "cannot remove device " | |
bc98d6c8 | 4092 | "links for '%s': %s"), dataset, strerror(errno))); |
d603ed6c BB |
4093 | } |
4094 | } | |
4095 | ||
4096 | return (0); | |
34dc7c2f BB |
4097 | } |
4098 | ||
4099 | nvlist_t * | |
d603ed6c | 4100 | zfs_get_user_props(zfs_handle_t *zhp) |
34dc7c2f | 4101 | { |
d603ed6c | 4102 | return (zhp->zfs_user_props); |
34dc7c2f BB |
4103 | } |
4104 | ||
4105 | /* | |
4106 | * This function is used by 'zfs list' to determine the exact set of columns to | |
4107 | * display, and their maximum widths. This does two main things: | |
4108 | * | |
4109 | * - If this is a list of all properties, then expand the list to include | |
4110 | * all native properties, and set a flag so that for each dataset we look | |
4111 | * for new unique user properties and add them to the list. | |
4112 | * | |
4113 | * - For non fixed-width properties, keep track of the maximum width seen | |
428870ff BB |
4114 | * so that we can size the column appropriately. If the user has |
4115 | * requested received property values, we also need to compute the width | |
4116 | * of the RECEIVED column. | |
34dc7c2f BB |
4117 | */ |
4118 | int | |
428870ff | 4119 | zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received) |
34dc7c2f BB |
4120 | { |
4121 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
4122 | zprop_list_t *entry; | |
4123 | zprop_list_t **last, **start; | |
4124 | nvlist_t *userprops, *propval; | |
4125 | nvpair_t *elem; | |
4126 | char *strval; | |
4127 | char buf[ZFS_MAXPROPLEN]; | |
4128 | ||
4129 | if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) | |
4130 | return (-1); | |
4131 | ||
4132 | userprops = zfs_get_user_props(zhp); | |
4133 | ||
4134 | entry = *plp; | |
4135 | if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { | |
4136 | /* | |
4137 | * Go through and add any user properties as necessary. We | |
4138 | * start by incrementing our list pointer to the first | |
4139 | * non-native property. | |
4140 | */ | |
4141 | start = plp; | |
4142 | while (*start != NULL) { | |
4143 | if ((*start)->pl_prop == ZPROP_INVAL) | |
4144 | break; | |
4145 | start = &(*start)->pl_next; | |
4146 | } | |
4147 | ||
4148 | elem = NULL; | |
4149 | while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { | |
4150 | /* | |
4151 | * See if we've already found this property in our list. | |
4152 | */ | |
4153 | for (last = start; *last != NULL; | |
4154 | last = &(*last)->pl_next) { | |
4155 | if (strcmp((*last)->pl_user_prop, | |
4156 | nvpair_name(elem)) == 0) | |
4157 | break; | |
4158 | } | |
4159 | ||
4160 | if (*last == NULL) { | |
4161 | if ((entry = zfs_alloc(hdl, | |
4162 | sizeof (zprop_list_t))) == NULL || | |
4163 | ((entry->pl_user_prop = zfs_strdup(hdl, | |
4164 | nvpair_name(elem)))) == NULL) { | |
4165 | free(entry); | |
4166 | return (-1); | |
4167 | } | |
4168 | ||
4169 | entry->pl_prop = ZPROP_INVAL; | |
4170 | entry->pl_width = strlen(nvpair_name(elem)); | |
4171 | entry->pl_all = B_TRUE; | |
4172 | *last = entry; | |
4173 | } | |
4174 | } | |
4175 | } | |
4176 | ||
4177 | /* | |
4178 | * Now go through and check the width of any non-fixed columns | |
4179 | */ | |
4180 | for (entry = *plp; entry != NULL; entry = entry->pl_next) { | |
4181 | if (entry->pl_fixed) | |
4182 | continue; | |
4183 | ||
4184 | if (entry->pl_prop != ZPROP_INVAL) { | |
4185 | if (zfs_prop_get(zhp, entry->pl_prop, | |
4186 | buf, sizeof (buf), NULL, NULL, 0, B_FALSE) == 0) { | |
4187 | if (strlen(buf) > entry->pl_width) | |
4188 | entry->pl_width = strlen(buf); | |
4189 | } | |
428870ff BB |
4190 | if (received && zfs_prop_get_recvd(zhp, |
4191 | zfs_prop_to_name(entry->pl_prop), | |
4192 | buf, sizeof (buf), B_FALSE) == 0) | |
4193 | if (strlen(buf) > entry->pl_recvd_width) | |
4194 | entry->pl_recvd_width = strlen(buf); | |
4195 | } else { | |
4196 | if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, | |
4197 | &propval) == 0) { | |
4198 | verify(nvlist_lookup_string(propval, | |
4199 | ZPROP_VALUE, &strval) == 0); | |
4200 | if (strlen(strval) > entry->pl_width) | |
4201 | entry->pl_width = strlen(strval); | |
4202 | } | |
4203 | if (received && zfs_prop_get_recvd(zhp, | |
4204 | entry->pl_user_prop, | |
4205 | buf, sizeof (buf), B_FALSE) == 0) | |
4206 | if (strlen(buf) > entry->pl_recvd_width) | |
4207 | entry->pl_recvd_width = strlen(buf); | |
34dc7c2f BB |
4208 | } |
4209 | } | |
4210 | ||
4211 | return (0); | |
4212 | } | |
4213 | ||
9babb374 BB |
4214 | void |
4215 | zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) | |
4216 | { | |
4217 | nvpair_t *curr; | |
4218 | ||
4219 | /* | |
4220 | * Keep a reference to the props-table against which we prune the | |
4221 | * properties. | |
4222 | */ | |
4223 | zhp->zfs_props_table = props; | |
4224 | ||
4225 | curr = nvlist_next_nvpair(zhp->zfs_props, NULL); | |
4226 | ||
4227 | while (curr) { | |
4228 | zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); | |
4229 | nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); | |
4230 | ||
4231 | /* | |
428870ff BB |
4232 | * User properties will result in ZPROP_INVAL, and since we |
4233 | * only know how to prune standard ZFS properties, we always | |
4234 | * leave these in the list. This can also happen if we | |
4235 | * encounter an unknown DSL property (when running older | |
4236 | * software, for example). | |
9babb374 BB |
4237 | */ |
4238 | if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) | |
4239 | (void) nvlist_remove(zhp->zfs_props, | |
4240 | nvpair_name(curr), nvpair_type(curr)); | |
4241 | curr = next; | |
4242 | } | |
4243 | } | |
4244 | ||
4245 | static int | |
4246 | zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, | |
4247 | zfs_smb_acl_op_t cmd, char *resource1, char *resource2) | |
4248 | { | |
2598c001 | 4249 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
9babb374 BB |
4250 | nvlist_t *nvlist = NULL; |
4251 | int error; | |
4252 | ||
4253 | (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); | |
4254 | (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); | |
4255 | zc.zc_cookie = (uint64_t)cmd; | |
4256 | ||
4257 | if (cmd == ZFS_SMB_ACL_RENAME) { | |
4258 | if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { | |
4259 | (void) no_memory(hdl); | |
a6098088 | 4260 | return (-1); |
9babb374 BB |
4261 | } |
4262 | } | |
4263 | ||
4264 | switch (cmd) { | |
4265 | case ZFS_SMB_ACL_ADD: | |
4266 | case ZFS_SMB_ACL_REMOVE: | |
4267 | (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); | |
4268 | break; | |
4269 | case ZFS_SMB_ACL_RENAME: | |
4270 | if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, | |
4271 | resource1) != 0) { | |
4272 | (void) no_memory(hdl); | |
4273 | return (-1); | |
4274 | } | |
4275 | if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, | |
4276 | resource2) != 0) { | |
4277 | (void) no_memory(hdl); | |
4278 | return (-1); | |
4279 | } | |
4280 | if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { | |
4281 | nvlist_free(nvlist); | |
4282 | return (-1); | |
4283 | } | |
4284 | break; | |
4285 | case ZFS_SMB_ACL_PURGE: | |
4286 | break; | |
4287 | default: | |
4288 | return (-1); | |
4289 | } | |
4290 | error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); | |
4291 | if (nvlist) | |
4292 | nvlist_free(nvlist); | |
4293 | return (error); | |
4294 | } | |
4295 | ||
4296 | int | |
4297 | zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, | |
4298 | char *path, char *resource) | |
4299 | { | |
4300 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, | |
4301 | resource, NULL)); | |
4302 | } | |
4303 | ||
4304 | int | |
4305 | zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, | |
4306 | char *path, char *resource) | |
4307 | { | |
4308 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, | |
4309 | resource, NULL)); | |
4310 | } | |
4311 | ||
4312 | int | |
4313 | zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) | |
4314 | { | |
4315 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, | |
4316 | NULL, NULL)); | |
4317 | } | |
4318 | ||
4319 | int | |
4320 | zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, | |
4321 | char *oldname, char *newname) | |
4322 | { | |
4323 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, | |
4324 | oldname, newname)); | |
4325 | } | |
4326 | ||
4327 | int | |
4328 | zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, | |
4329 | zfs_userspace_cb_t func, void *arg) | |
4330 | { | |
2598c001 | 4331 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
9babb374 BB |
4332 | int error; |
4333 | zfs_useracct_t buf[100]; | |
4334 | ||
330d06f9 | 4335 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
9babb374 BB |
4336 | |
4337 | zc.zc_objset_type = type; | |
4338 | zc.zc_nvlist_dst = (uintptr_t)buf; | |
4339 | ||
4340 | /* CONSTCOND */ | |
4341 | while (1) { | |
4342 | zfs_useracct_t *zua = buf; | |
4343 | ||
4344 | zc.zc_nvlist_dst_size = sizeof (buf); | |
4345 | error = ioctl(zhp->zfs_hdl->libzfs_fd, | |
4346 | ZFS_IOC_USERSPACE_MANY, &zc); | |
4347 | if (error || zc.zc_nvlist_dst_size == 0) | |
4348 | break; | |
4349 | ||
4350 | while (zc.zc_nvlist_dst_size > 0) { | |
4351 | error = func(arg, zua->zu_domain, zua->zu_rid, | |
4352 | zua->zu_space); | |
4353 | if (error != 0) | |
4354 | return (error); | |
4355 | zua++; | |
4356 | zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); | |
4357 | } | |
4358 | } | |
4359 | ||
4360 | return (error); | |
4361 | } | |
45d1cae3 BB |
4362 | |
4363 | int | |
4364 | zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, | |
572e2857 BB |
4365 | boolean_t recursive, boolean_t temphold, boolean_t enoent_ok, |
4366 | int cleanup_fd, uint64_t dsobj, uint64_t createtxg) | |
45d1cae3 | 4367 | { |
2598c001 | 4368 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
45d1cae3 BB |
4369 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
4370 | ||
572e2857 BB |
4371 | ASSERT(!recursive || dsobj == 0); |
4372 | ||
45d1cae3 BB |
4373 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
4374 | (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); | |
428870ff BB |
4375 | if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string)) |
4376 | >= sizeof (zc.zc_string)) | |
4377 | return (zfs_error(hdl, EZFS_TAGTOOLONG, tag)); | |
45d1cae3 | 4378 | zc.zc_cookie = recursive; |
428870ff | 4379 | zc.zc_temphold = temphold; |
572e2857 BB |
4380 | zc.zc_cleanup_fd = cleanup_fd; |
4381 | zc.zc_sendobj = dsobj; | |
4382 | zc.zc_createtxg = createtxg; | |
45d1cae3 BB |
4383 | |
4384 | if (zfs_ioctl(hdl, ZFS_IOC_HOLD, &zc) != 0) { | |
4385 | char errbuf[ZFS_MAXNAMELEN+32]; | |
4386 | ||
4387 | /* | |
4388 | * if it was recursive, the one that actually failed will be in | |
4389 | * zc.zc_name. | |
4390 | */ | |
4391 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
4392 | "cannot hold '%s@%s'"), zc.zc_name, snapname); | |
4393 | switch (errno) { | |
428870ff BB |
4394 | case E2BIG: |
4395 | /* | |
4396 | * Temporary tags wind up having the ds object id | |
4397 | * prepended. So even if we passed the length check | |
4398 | * above, it's still possible for the tag to wind | |
4399 | * up being slightly too long. | |
4400 | */ | |
4401 | return (zfs_error(hdl, EZFS_TAGTOOLONG, errbuf)); | |
45d1cae3 BB |
4402 | case ENOTSUP: |
4403 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4404 | "pool must be upgraded")); | |
4405 | return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); | |
4406 | case EINVAL: | |
4407 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
4408 | case EEXIST: | |
4409 | return (zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf)); | |
428870ff BB |
4410 | case ENOENT: |
4411 | if (enoent_ok) | |
572e2857 | 4412 | return (ENOENT); |
428870ff | 4413 | /* FALLTHROUGH */ |
45d1cae3 BB |
4414 | default: |
4415 | return (zfs_standard_error_fmt(hdl, errno, errbuf)); | |
4416 | } | |
4417 | } | |
4418 | ||
4419 | return (0); | |
4420 | } | |
4421 | ||
4422 | int | |
4423 | zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, | |
4424 | boolean_t recursive) | |
4425 | { | |
2598c001 | 4426 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
45d1cae3 BB |
4427 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
4428 | ||
4429 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
4430 | (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); | |
428870ff BB |
4431 | if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string)) |
4432 | >= sizeof (zc.zc_string)) | |
4433 | return (zfs_error(hdl, EZFS_TAGTOOLONG, tag)); | |
45d1cae3 BB |
4434 | zc.zc_cookie = recursive; |
4435 | ||
4436 | if (zfs_ioctl(hdl, ZFS_IOC_RELEASE, &zc) != 0) { | |
4437 | char errbuf[ZFS_MAXNAMELEN+32]; | |
4438 | ||
4439 | /* | |
4440 | * if it was recursive, the one that actually failed will be in | |
4441 | * zc.zc_name. | |
4442 | */ | |
4443 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
428870ff BB |
4444 | "cannot release '%s' from '%s@%s'"), tag, zc.zc_name, |
4445 | snapname); | |
45d1cae3 BB |
4446 | switch (errno) { |
4447 | case ESRCH: | |
4448 | return (zfs_error(hdl, EZFS_REFTAG_RELE, errbuf)); | |
4449 | case ENOTSUP: | |
4450 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4451 | "pool must be upgraded")); | |
4452 | return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); | |
4453 | case EINVAL: | |
4454 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
4455 | default: | |
4456 | return (zfs_standard_error_fmt(hdl, errno, errbuf)); | |
4457 | } | |
4458 | } | |
4459 | ||
4460 | return (0); | |
4461 | } | |
428870ff | 4462 | |
0b7936d5 AS |
4463 | int |
4464 | zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) | |
4465 | { | |
4466 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
4467 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
4468 | int nvsz = 2048; | |
4469 | void *nvbuf; | |
4470 | int err = 0; | |
4471 | char errbuf[ZFS_MAXNAMELEN+32]; | |
4472 | ||
4473 | assert(zhp->zfs_type == ZFS_TYPE_VOLUME || | |
4474 | zhp->zfs_type == ZFS_TYPE_FILESYSTEM); | |
4475 | ||
4476 | tryagain: | |
4477 | ||
4478 | nvbuf = malloc(nvsz); | |
4479 | if (nvbuf == NULL) { | |
4480 | err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); | |
4481 | goto out; | |
4482 | } | |
4483 | ||
4484 | zc.zc_nvlist_dst_size = nvsz; | |
4485 | zc.zc_nvlist_dst = (uintptr_t)nvbuf; | |
4486 | ||
4487 | (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); | |
4488 | ||
c7f2d69d | 4489 | if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) { |
0b7936d5 AS |
4490 | (void) snprintf(errbuf, sizeof (errbuf), |
4491 | dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), | |
4492 | zc.zc_name); | |
4493 | switch (errno) { | |
4494 | case ENOMEM: | |
4495 | free(nvbuf); | |
4496 | nvsz = zc.zc_nvlist_dst_size; | |
4497 | goto tryagain; | |
4498 | ||
4499 | case ENOTSUP: | |
4500 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4501 | "pool must be upgraded")); | |
4502 | err = zfs_error(hdl, EZFS_BADVERSION, errbuf); | |
4503 | break; | |
4504 | case EINVAL: | |
4505 | err = zfs_error(hdl, EZFS_BADTYPE, errbuf); | |
4506 | break; | |
4507 | case ENOENT: | |
4508 | err = zfs_error(hdl, EZFS_NOENT, errbuf); | |
4509 | break; | |
4510 | default: | |
4511 | err = zfs_standard_error_fmt(hdl, errno, errbuf); | |
4512 | break; | |
4513 | } | |
4514 | } else { | |
4515 | /* success */ | |
4516 | int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); | |
4517 | if (rc) { | |
4518 | (void) snprintf(errbuf, sizeof (errbuf), dgettext( | |
4519 | TEXT_DOMAIN, "cannot get permissions on '%s'"), | |
4520 | zc.zc_name); | |
4521 | err = zfs_standard_error_fmt(hdl, rc, errbuf); | |
4522 | } | |
4523 | } | |
4524 | ||
4525 | free(nvbuf); | |
4526 | out: | |
4527 | return (err); | |
4528 | } | |
4529 | ||
4530 | int | |
4531 | zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) | |
4532 | { | |
4533 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
4534 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
4535 | char *nvbuf; | |
4536 | char errbuf[ZFS_MAXNAMELEN+32]; | |
4537 | size_t nvsz; | |
4538 | int err; | |
4539 | ||
4540 | assert(zhp->zfs_type == ZFS_TYPE_VOLUME || | |
4541 | zhp->zfs_type == ZFS_TYPE_FILESYSTEM); | |
4542 | ||
4543 | err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); | |
4544 | assert(err == 0); | |
4545 | ||
4546 | nvbuf = malloc(nvsz); | |
4547 | ||
4548 | err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); | |
4549 | assert(err == 0); | |
4550 | ||
4551 | zc.zc_nvlist_src_size = nvsz; | |
4552 | zc.zc_nvlist_src = (uintptr_t)nvbuf; | |
4553 | zc.zc_perm_action = un; | |
4554 | ||
4555 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
4556 | ||
4557 | if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { | |
4558 | (void) snprintf(errbuf, sizeof (errbuf), | |
4559 | dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), | |
4560 | zc.zc_name); | |
4561 | switch (errno) { | |
4562 | case ENOTSUP: | |
4563 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4564 | "pool must be upgraded")); | |
4565 | err = zfs_error(hdl, EZFS_BADVERSION, errbuf); | |
4566 | break; | |
4567 | case EINVAL: | |
4568 | err = zfs_error(hdl, EZFS_BADTYPE, errbuf); | |
4569 | break; | |
4570 | case ENOENT: | |
4571 | err = zfs_error(hdl, EZFS_NOENT, errbuf); | |
4572 | break; | |
4573 | default: | |
4574 | err = zfs_standard_error_fmt(hdl, errno, errbuf); | |
4575 | break; | |
4576 | } | |
4577 | } | |
4578 | ||
4579 | free(nvbuf); | |
4580 | ||
4581 | return (err); | |
4582 | } | |
4583 | ||
4584 | int | |
4585 | zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) | |
4586 | { | |
4587 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
4588 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
4589 | int nvsz = 2048; | |
4590 | void *nvbuf; | |
4591 | int err = 0; | |
4592 | char errbuf[ZFS_MAXNAMELEN+32]; | |
4593 | ||
4594 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
4595 | ||
4596 | tryagain: | |
4597 | ||
4598 | nvbuf = malloc(nvsz); | |
4599 | if (nvbuf == NULL) { | |
4600 | err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); | |
4601 | goto out; | |
4602 | } | |
4603 | ||
4604 | zc.zc_nvlist_dst_size = nvsz; | |
4605 | zc.zc_nvlist_dst = (uintptr_t)nvbuf; | |
4606 | ||
4607 | (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); | |
4608 | ||
4609 | if (zfs_ioctl(hdl, ZFS_IOC_GET_HOLDS, &zc) != 0) { | |
4610 | (void) snprintf(errbuf, sizeof (errbuf), | |
4611 | dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), | |
4612 | zc.zc_name); | |
4613 | switch (errno) { | |
4614 | case ENOMEM: | |
4615 | free(nvbuf); | |
4616 | nvsz = zc.zc_nvlist_dst_size; | |
4617 | goto tryagain; | |
4618 | ||
4619 | case ENOTSUP: | |
4620 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4621 | "pool must be upgraded")); | |
4622 | err = zfs_error(hdl, EZFS_BADVERSION, errbuf); | |
4623 | break; | |
4624 | case EINVAL: | |
4625 | err = zfs_error(hdl, EZFS_BADTYPE, errbuf); | |
4626 | break; | |
4627 | case ENOENT: | |
4628 | err = zfs_error(hdl, EZFS_NOENT, errbuf); | |
4629 | break; | |
4630 | default: | |
4631 | err = zfs_standard_error_fmt(hdl, errno, errbuf); | |
4632 | break; | |
4633 | } | |
4634 | } else { | |
4635 | /* success */ | |
4636 | int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); | |
4637 | if (rc) { | |
4638 | (void) snprintf(errbuf, sizeof (errbuf), | |
4639 | dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), | |
4640 | zc.zc_name); | |
4641 | err = zfs_standard_error_fmt(hdl, rc, errbuf); | |
4642 | } | |
4643 | } | |
4644 | ||
4645 | free(nvbuf); | |
4646 | out: | |
4647 | return (err); | |
4648 | } | |
4649 | ||
428870ff BB |
4650 | uint64_t |
4651 | zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) | |
4652 | { | |
4653 | uint64_t numdb; | |
4654 | uint64_t nblocks, volblocksize; | |
4655 | int ncopies; | |
4656 | char *strval; | |
4657 | ||
4658 | if (nvlist_lookup_string(props, | |
4659 | zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) | |
4660 | ncopies = atoi(strval); | |
4661 | else | |
4662 | ncopies = 1; | |
4663 | if (nvlist_lookup_uint64(props, | |
4664 | zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), | |
4665 | &volblocksize) != 0) | |
4666 | volblocksize = ZVOL_DEFAULT_BLOCKSIZE; | |
4667 | nblocks = volsize/volblocksize; | |
4668 | /* start with metadnode L0-L6 */ | |
4669 | numdb = 7; | |
4670 | /* calculate number of indirects */ | |
4671 | while (nblocks > 1) { | |
4672 | nblocks += DNODES_PER_LEVEL - 1; | |
4673 | nblocks /= DNODES_PER_LEVEL; | |
4674 | numdb += nblocks; | |
4675 | } | |
4676 | numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); | |
4677 | volsize *= ncopies; | |
4678 | /* | |
4679 | * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't | |
4680 | * compressed, but in practice they compress down to about | |
4681 | * 1100 bytes | |
4682 | */ | |
4683 | numdb *= 1ULL << DN_MAX_INDBLKSHIFT; | |
4684 | volsize += numdb; | |
4685 | return (volsize); | |
4686 | } |