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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. |
34dc7c2f BB |
24 | */ |
25 | ||
34dc7c2f BB |
26 | #include <ctype.h> |
27 | #include <errno.h> | |
34dc7c2f BB |
28 | #include <libintl.h> |
29 | #include <math.h> | |
30 | #include <stdio.h> | |
31 | #include <stdlib.h> | |
32 | #include <strings.h> | |
33 | #include <unistd.h> | |
34 | #include <stddef.h> | |
35 | #include <zone.h> | |
36 | #include <fcntl.h> | |
37 | #include <sys/mntent.h> | |
34dc7c2f | 38 | #include <sys/mount.h> |
34dc7c2f BB |
39 | #include <priv.h> |
40 | #include <pwd.h> | |
41 | #include <grp.h> | |
42 | #include <stddef.h> | |
43 | #include <ucred.h> | |
be160928 | 44 | #ifdef HAVE_IDMAP |
9babb374 BB |
45 | #include <idmap.h> |
46 | #include <aclutils.h> | |
45d1cae3 | 47 | #include <directory.h> |
be160928 | 48 | #endif /* HAVE_IDMAP */ |
34dc7c2f | 49 | |
428870ff | 50 | #include <sys/dnode.h> |
34dc7c2f BB |
51 | #include <sys/spa.h> |
52 | #include <sys/zap.h> | |
53 | #include <libzfs.h> | |
54 | ||
55 | #include "zfs_namecheck.h" | |
56 | #include "zfs_prop.h" | |
57 | #include "libzfs_impl.h" | |
58 | #include "zfs_deleg.h" | |
59 | ||
d603ed6c | 60 | static int zvol_create_link_common(libzfs_handle_t *, const char *, int); |
9babb374 BB |
61 | static int userquota_propname_decode(const char *propname, boolean_t zoned, |
62 | zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); | |
34dc7c2f BB |
63 | |
64 | /* | |
65 | * Given a single type (not a mask of types), return the type in a human | |
66 | * readable form. | |
67 | */ | |
68 | const char * | |
69 | zfs_type_to_name(zfs_type_t type) | |
70 | { | |
71 | switch (type) { | |
72 | case ZFS_TYPE_FILESYSTEM: | |
73 | return (dgettext(TEXT_DOMAIN, "filesystem")); | |
74 | case ZFS_TYPE_SNAPSHOT: | |
75 | return (dgettext(TEXT_DOMAIN, "snapshot")); | |
76 | case ZFS_TYPE_VOLUME: | |
77 | return (dgettext(TEXT_DOMAIN, "volume")); | |
e75c13c3 BB |
78 | default: |
79 | break; | |
34dc7c2f BB |
80 | } |
81 | ||
82 | return (NULL); | |
83 | } | |
84 | ||
34dc7c2f BB |
85 | /* |
86 | * Validate a ZFS path. This is used even before trying to open the dataset, to | |
9babb374 BB |
87 | * provide a more meaningful error message. We call zfs_error_aux() to |
88 | * explain exactly why the name was not valid. | |
34dc7c2f | 89 | */ |
572e2857 | 90 | int |
34dc7c2f BB |
91 | zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, |
92 | boolean_t modifying) | |
93 | { | |
94 | namecheck_err_t why; | |
95 | char what; | |
96 | ||
97 | if (dataset_namecheck(path, &why, &what) != 0) { | |
98 | if (hdl != NULL) { | |
99 | switch (why) { | |
100 | case NAME_ERR_TOOLONG: | |
101 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
102 | "name is too long")); | |
103 | break; | |
104 | ||
105 | case NAME_ERR_LEADING_SLASH: | |
106 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
107 | "leading slash in name")); | |
108 | break; | |
109 | ||
110 | case NAME_ERR_EMPTY_COMPONENT: | |
111 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
112 | "empty component in name")); | |
113 | break; | |
114 | ||
115 | case NAME_ERR_TRAILING_SLASH: | |
116 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
117 | "trailing slash in name")); | |
118 | break; | |
119 | ||
120 | case NAME_ERR_INVALCHAR: | |
121 | zfs_error_aux(hdl, | |
122 | dgettext(TEXT_DOMAIN, "invalid character " | |
123 | "'%c' in name"), what); | |
124 | break; | |
125 | ||
126 | case NAME_ERR_MULTIPLE_AT: | |
127 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
128 | "multiple '@' delimiters in name")); | |
129 | break; | |
130 | ||
131 | case NAME_ERR_NOLETTER: | |
132 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
133 | "pool doesn't begin with a letter")); | |
134 | break; | |
135 | ||
136 | case NAME_ERR_RESERVED: | |
137 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
138 | "name is reserved")); | |
139 | break; | |
140 | ||
141 | case NAME_ERR_DISKLIKE: | |
142 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
143 | "reserved disk name")); | |
144 | break; | |
e75c13c3 BB |
145 | default: |
146 | break; | |
34dc7c2f BB |
147 | } |
148 | } | |
149 | ||
150 | return (0); | |
151 | } | |
152 | ||
153 | if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { | |
154 | if (hdl != NULL) | |
155 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
156 | "snapshot delimiter '@' in filesystem name")); | |
157 | return (0); | |
158 | } | |
159 | ||
160 | if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { | |
161 | if (hdl != NULL) | |
162 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
163 | "missing '@' delimiter in snapshot name")); | |
164 | return (0); | |
165 | } | |
166 | ||
167 | if (modifying && strchr(path, '%') != NULL) { | |
168 | if (hdl != NULL) | |
169 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
170 | "invalid character %c in name"), '%'); | |
171 | return (0); | |
172 | } | |
173 | ||
174 | return (-1); | |
175 | } | |
176 | ||
177 | int | |
178 | zfs_name_valid(const char *name, zfs_type_t type) | |
179 | { | |
180 | if (type == ZFS_TYPE_POOL) | |
181 | return (zpool_name_valid(NULL, B_FALSE, name)); | |
182 | return (zfs_validate_name(NULL, name, type, B_FALSE)); | |
183 | } | |
184 | ||
185 | /* | |
186 | * This function takes the raw DSL properties, and filters out the user-defined | |
187 | * properties into a separate nvlist. | |
188 | */ | |
189 | static nvlist_t * | |
190 | process_user_props(zfs_handle_t *zhp, nvlist_t *props) | |
191 | { | |
192 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
193 | nvpair_t *elem; | |
194 | nvlist_t *propval; | |
195 | nvlist_t *nvl; | |
196 | ||
197 | if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { | |
198 | (void) no_memory(hdl); | |
199 | return (NULL); | |
200 | } | |
201 | ||
202 | elem = NULL; | |
203 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
204 | if (!zfs_prop_user(nvpair_name(elem))) | |
205 | continue; | |
206 | ||
207 | verify(nvpair_value_nvlist(elem, &propval) == 0); | |
208 | if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { | |
209 | nvlist_free(nvl); | |
210 | (void) no_memory(hdl); | |
211 | return (NULL); | |
212 | } | |
213 | } | |
214 | ||
215 | return (nvl); | |
216 | } | |
217 | ||
b128c09f BB |
218 | static zpool_handle_t * |
219 | zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) | |
220 | { | |
221 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
222 | zpool_handle_t *zph; | |
223 | ||
224 | if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { | |
225 | if (hdl->libzfs_pool_handles != NULL) | |
226 | zph->zpool_next = hdl->libzfs_pool_handles; | |
227 | hdl->libzfs_pool_handles = zph; | |
228 | } | |
229 | return (zph); | |
230 | } | |
231 | ||
232 | static zpool_handle_t * | |
233 | zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) | |
234 | { | |
235 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
236 | zpool_handle_t *zph = hdl->libzfs_pool_handles; | |
237 | ||
238 | while ((zph != NULL) && | |
239 | (strncmp(pool_name, zpool_get_name(zph), len) != 0)) | |
240 | zph = zph->zpool_next; | |
241 | return (zph); | |
242 | } | |
243 | ||
244 | /* | |
245 | * Returns a handle to the pool that contains the provided dataset. | |
246 | * If a handle to that pool already exists then that handle is returned. | |
247 | * Otherwise, a new handle is created and added to the list of handles. | |
248 | */ | |
249 | static zpool_handle_t * | |
250 | zpool_handle(zfs_handle_t *zhp) | |
251 | { | |
252 | char *pool_name; | |
253 | int len; | |
254 | zpool_handle_t *zph; | |
255 | ||
256 | len = strcspn(zhp->zfs_name, "/@") + 1; | |
257 | pool_name = zfs_alloc(zhp->zfs_hdl, len); | |
258 | (void) strlcpy(pool_name, zhp->zfs_name, len); | |
259 | ||
260 | zph = zpool_find_handle(zhp, pool_name, len); | |
261 | if (zph == NULL) | |
262 | zph = zpool_add_handle(zhp, pool_name); | |
263 | ||
264 | free(pool_name); | |
265 | return (zph); | |
266 | } | |
267 | ||
268 | void | |
269 | zpool_free_handles(libzfs_handle_t *hdl) | |
270 | { | |
271 | zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; | |
272 | ||
273 | while (zph != NULL) { | |
274 | next = zph->zpool_next; | |
275 | zpool_close(zph); | |
276 | zph = next; | |
277 | } | |
278 | hdl->libzfs_pool_handles = NULL; | |
279 | } | |
280 | ||
34dc7c2f BB |
281 | /* |
282 | * Utility function to gather stats (objset and zpl) for the given object. | |
283 | */ | |
284 | static int | |
fb5f0bc8 | 285 | get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) |
34dc7c2f | 286 | { |
34dc7c2f | 287 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
34dc7c2f | 288 | |
fb5f0bc8 | 289 | (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); |
34dc7c2f | 290 | |
fb5f0bc8 | 291 | while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { |
34dc7c2f | 292 | if (errno == ENOMEM) { |
fb5f0bc8 | 293 | if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { |
34dc7c2f BB |
294 | return (-1); |
295 | } | |
296 | } else { | |
34dc7c2f BB |
297 | return (-1); |
298 | } | |
299 | } | |
fb5f0bc8 BB |
300 | return (0); |
301 | } | |
34dc7c2f | 302 | |
428870ff BB |
303 | /* |
304 | * Utility function to get the received properties of the given object. | |
305 | */ | |
306 | static int | |
307 | get_recvd_props_ioctl(zfs_handle_t *zhp) | |
308 | { | |
309 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
310 | nvlist_t *recvdprops; | |
2598c001 | 311 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
428870ff BB |
312 | int err; |
313 | ||
314 | if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) | |
315 | return (-1); | |
316 | ||
317 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
318 | ||
319 | while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { | |
320 | if (errno == ENOMEM) { | |
321 | if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { | |
322 | return (-1); | |
323 | } | |
324 | } else { | |
325 | zcmd_free_nvlists(&zc); | |
326 | return (-1); | |
327 | } | |
328 | } | |
329 | ||
330 | err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); | |
331 | zcmd_free_nvlists(&zc); | |
332 | if (err != 0) | |
333 | return (-1); | |
334 | ||
335 | nvlist_free(zhp->zfs_recvd_props); | |
336 | zhp->zfs_recvd_props = recvdprops; | |
337 | ||
338 | return (0); | |
339 | } | |
340 | ||
fb5f0bc8 BB |
341 | static int |
342 | put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) | |
343 | { | |
344 | nvlist_t *allprops, *userprops; | |
34dc7c2f | 345 | |
fb5f0bc8 BB |
346 | zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ |
347 | ||
348 | if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { | |
34dc7c2f BB |
349 | return (-1); |
350 | } | |
351 | ||
9babb374 BB |
352 | /* |
353 | * XXX Why do we store the user props separately, in addition to | |
354 | * storing them in zfs_props? | |
355 | */ | |
34dc7c2f BB |
356 | if ((userprops = process_user_props(zhp, allprops)) == NULL) { |
357 | nvlist_free(allprops); | |
358 | return (-1); | |
359 | } | |
360 | ||
361 | nvlist_free(zhp->zfs_props); | |
362 | nvlist_free(zhp->zfs_user_props); | |
363 | ||
364 | zhp->zfs_props = allprops; | |
365 | zhp->zfs_user_props = userprops; | |
366 | ||
367 | return (0); | |
368 | } | |
369 | ||
fb5f0bc8 BB |
370 | static int |
371 | get_stats(zfs_handle_t *zhp) | |
372 | { | |
373 | int rc = 0; | |
2598c001 | 374 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
fb5f0bc8 BB |
375 | |
376 | if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) | |
377 | return (-1); | |
378 | if (get_stats_ioctl(zhp, &zc) != 0) | |
379 | rc = -1; | |
380 | else if (put_stats_zhdl(zhp, &zc) != 0) | |
381 | rc = -1; | |
382 | zcmd_free_nvlists(&zc); | |
383 | return (rc); | |
384 | } | |
385 | ||
34dc7c2f BB |
386 | /* |
387 | * Refresh the properties currently stored in the handle. | |
388 | */ | |
389 | void | |
390 | zfs_refresh_properties(zfs_handle_t *zhp) | |
391 | { | |
392 | (void) get_stats(zhp); | |
393 | } | |
394 | ||
395 | /* | |
396 | * Makes a handle from the given dataset name. Used by zfs_open() and | |
397 | * zfs_iter_* to create child handles on the fly. | |
398 | */ | |
fb5f0bc8 BB |
399 | static int |
400 | make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) | |
34dc7c2f | 401 | { |
428870ff | 402 | if (put_stats_zhdl(zhp, zc) != 0) |
fb5f0bc8 | 403 | return (-1); |
34dc7c2f BB |
404 | |
405 | /* | |
406 | * We've managed to open the dataset and gather statistics. Determine | |
407 | * the high-level type. | |
408 | */ | |
409 | if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) | |
410 | zhp->zfs_head_type = ZFS_TYPE_VOLUME; | |
411 | else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) | |
412 | zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; | |
413 | else | |
414 | abort(); | |
415 | ||
416 | if (zhp->zfs_dmustats.dds_is_snapshot) | |
417 | zhp->zfs_type = ZFS_TYPE_SNAPSHOT; | |
418 | else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) | |
419 | zhp->zfs_type = ZFS_TYPE_VOLUME; | |
420 | else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) | |
421 | zhp->zfs_type = ZFS_TYPE_FILESYSTEM; | |
422 | else | |
423 | abort(); /* we should never see any other types */ | |
424 | ||
428870ff BB |
425 | if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) |
426 | return (-1); | |
427 | ||
fb5f0bc8 BB |
428 | return (0); |
429 | } | |
430 | ||
431 | zfs_handle_t * | |
432 | make_dataset_handle(libzfs_handle_t *hdl, const char *path) | |
433 | { | |
2598c001 | 434 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
fb5f0bc8 BB |
435 | |
436 | zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); | |
437 | ||
438 | if (zhp == NULL) | |
439 | return (NULL); | |
440 | ||
441 | zhp->zfs_hdl = hdl; | |
442 | (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); | |
443 | if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { | |
444 | free(zhp); | |
445 | return (NULL); | |
446 | } | |
447 | if (get_stats_ioctl(zhp, &zc) == -1) { | |
448 | zcmd_free_nvlists(&zc); | |
449 | free(zhp); | |
450 | return (NULL); | |
451 | } | |
452 | if (make_dataset_handle_common(zhp, &zc) == -1) { | |
453 | free(zhp); | |
454 | zhp = NULL; | |
455 | } | |
456 | zcmd_free_nvlists(&zc); | |
457 | return (zhp); | |
458 | } | |
459 | ||
460 | static zfs_handle_t * | |
461 | make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) | |
462 | { | |
463 | zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); | |
464 | ||
465 | if (zhp == NULL) | |
466 | return (NULL); | |
467 | ||
468 | zhp->zfs_hdl = hdl; | |
469 | (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); | |
470 | if (make_dataset_handle_common(zhp, zc) == -1) { | |
471 | free(zhp); | |
472 | return (NULL); | |
473 | } | |
34dc7c2f BB |
474 | return (zhp); |
475 | } | |
476 | ||
477 | /* | |
478 | * Opens the given snapshot, filesystem, or volume. The 'types' | |
479 | * argument is a mask of acceptable types. The function will print an | |
480 | * appropriate error message and return NULL if it can't be opened. | |
481 | */ | |
482 | zfs_handle_t * | |
483 | zfs_open(libzfs_handle_t *hdl, const char *path, int types) | |
484 | { | |
485 | zfs_handle_t *zhp; | |
486 | char errbuf[1024]; | |
487 | ||
488 | (void) snprintf(errbuf, sizeof (errbuf), | |
489 | dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); | |
490 | ||
491 | /* | |
492 | * Validate the name before we even try to open it. | |
493 | */ | |
494 | if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { | |
495 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
496 | "invalid dataset name")); | |
497 | (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); | |
498 | return (NULL); | |
499 | } | |
500 | ||
501 | /* | |
502 | * Try to get stats for the dataset, which will tell us if it exists. | |
503 | */ | |
504 | errno = 0; | |
505 | if ((zhp = make_dataset_handle(hdl, path)) == NULL) { | |
506 | (void) zfs_standard_error(hdl, errno, errbuf); | |
507 | return (NULL); | |
508 | } | |
509 | ||
510 | if (!(types & zhp->zfs_type)) { | |
511 | (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); | |
512 | zfs_close(zhp); | |
513 | return (NULL); | |
514 | } | |
515 | ||
516 | return (zhp); | |
517 | } | |
518 | ||
519 | /* | |
520 | * Release a ZFS handle. Nothing to do but free the associated memory. | |
521 | */ | |
522 | void | |
523 | zfs_close(zfs_handle_t *zhp) | |
524 | { | |
525 | if (zhp->zfs_mntopts) | |
526 | free(zhp->zfs_mntopts); | |
527 | nvlist_free(zhp->zfs_props); | |
528 | nvlist_free(zhp->zfs_user_props); | |
428870ff | 529 | nvlist_free(zhp->zfs_recvd_props); |
34dc7c2f BB |
530 | free(zhp); |
531 | } | |
532 | ||
fb5f0bc8 BB |
533 | typedef struct mnttab_node { |
534 | struct mnttab mtn_mt; | |
535 | avl_node_t mtn_node; | |
536 | } mnttab_node_t; | |
537 | ||
538 | static int | |
539 | libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) | |
540 | { | |
541 | const mnttab_node_t *mtn1 = arg1; | |
542 | const mnttab_node_t *mtn2 = arg2; | |
543 | int rv; | |
544 | ||
545 | rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); | |
546 | ||
547 | if (rv == 0) | |
548 | return (0); | |
549 | return (rv > 0 ? 1 : -1); | |
550 | } | |
551 | ||
552 | void | |
553 | libzfs_mnttab_init(libzfs_handle_t *hdl) | |
554 | { | |
fb5f0bc8 BB |
555 | assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); |
556 | avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, | |
557 | sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); | |
9babb374 BB |
558 | } |
559 | ||
560 | void | |
561 | libzfs_mnttab_update(libzfs_handle_t *hdl) | |
562 | { | |
563 | struct mnttab entry; | |
fb5f0bc8 BB |
564 | |
565 | rewind(hdl->libzfs_mnttab); | |
566 | while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { | |
567 | mnttab_node_t *mtn; | |
568 | ||
569 | if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) | |
570 | continue; | |
571 | mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); | |
572 | mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); | |
573 | mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); | |
574 | mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); | |
575 | mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); | |
576 | avl_add(&hdl->libzfs_mnttab_cache, mtn); | |
577 | } | |
578 | } | |
579 | ||
580 | void | |
581 | libzfs_mnttab_fini(libzfs_handle_t *hdl) | |
582 | { | |
583 | void *cookie = NULL; | |
584 | mnttab_node_t *mtn; | |
585 | ||
c65aa5b2 | 586 | while ((mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie))) { |
fb5f0bc8 BB |
587 | free(mtn->mtn_mt.mnt_special); |
588 | free(mtn->mtn_mt.mnt_mountp); | |
589 | free(mtn->mtn_mt.mnt_fstype); | |
590 | free(mtn->mtn_mt.mnt_mntopts); | |
591 | free(mtn); | |
592 | } | |
593 | avl_destroy(&hdl->libzfs_mnttab_cache); | |
594 | } | |
595 | ||
9babb374 BB |
596 | void |
597 | libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) | |
598 | { | |
599 | hdl->libzfs_mnttab_enable = enable; | |
600 | } | |
601 | ||
fb5f0bc8 BB |
602 | int |
603 | libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, | |
604 | struct mnttab *entry) | |
605 | { | |
606 | mnttab_node_t find; | |
607 | mnttab_node_t *mtn; | |
608 | ||
9babb374 BB |
609 | if (!hdl->libzfs_mnttab_enable) { |
610 | struct mnttab srch = { 0 }; | |
611 | ||
612 | if (avl_numnodes(&hdl->libzfs_mnttab_cache)) | |
613 | libzfs_mnttab_fini(hdl); | |
614 | rewind(hdl->libzfs_mnttab); | |
615 | srch.mnt_special = (char *)fsname; | |
616 | srch.mnt_fstype = MNTTYPE_ZFS; | |
617 | if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) | |
618 | return (0); | |
619 | else | |
620 | return (ENOENT); | |
621 | } | |
622 | ||
fb5f0bc8 | 623 | if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) |
9babb374 | 624 | libzfs_mnttab_update(hdl); |
fb5f0bc8 BB |
625 | |
626 | find.mtn_mt.mnt_special = (char *)fsname; | |
627 | mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); | |
628 | if (mtn) { | |
629 | *entry = mtn->mtn_mt; | |
630 | return (0); | |
631 | } | |
632 | return (ENOENT); | |
633 | } | |
634 | ||
635 | void | |
636 | libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, | |
637 | const char *mountp, const char *mntopts) | |
638 | { | |
639 | mnttab_node_t *mtn; | |
640 | ||
641 | if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) | |
642 | return; | |
643 | mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); | |
644 | mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); | |
645 | mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); | |
646 | mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); | |
647 | mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); | |
648 | avl_add(&hdl->libzfs_mnttab_cache, mtn); | |
649 | } | |
650 | ||
651 | void | |
652 | libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) | |
653 | { | |
654 | mnttab_node_t find; | |
655 | mnttab_node_t *ret; | |
656 | ||
657 | find.mtn_mt.mnt_special = (char *)fsname; | |
c65aa5b2 | 658 | if ((ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL))) { |
fb5f0bc8 BB |
659 | avl_remove(&hdl->libzfs_mnttab_cache, ret); |
660 | free(ret->mtn_mt.mnt_special); | |
661 | free(ret->mtn_mt.mnt_mountp); | |
662 | free(ret->mtn_mt.mnt_fstype); | |
663 | free(ret->mtn_mt.mnt_mntopts); | |
664 | free(ret); | |
665 | } | |
666 | } | |
667 | ||
34dc7c2f BB |
668 | int |
669 | zfs_spa_version(zfs_handle_t *zhp, int *spa_version) | |
670 | { | |
b128c09f | 671 | zpool_handle_t *zpool_handle = zhp->zpool_hdl; |
34dc7c2f | 672 | |
34dc7c2f BB |
673 | if (zpool_handle == NULL) |
674 | return (-1); | |
675 | ||
676 | *spa_version = zpool_get_prop_int(zpool_handle, | |
677 | ZPOOL_PROP_VERSION, NULL); | |
34dc7c2f BB |
678 | return (0); |
679 | } | |
680 | ||
681 | /* | |
682 | * The choice of reservation property depends on the SPA version. | |
683 | */ | |
684 | static int | |
685 | zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) | |
686 | { | |
687 | int spa_version; | |
688 | ||
689 | if (zfs_spa_version(zhp, &spa_version) < 0) | |
690 | return (-1); | |
691 | ||
692 | if (spa_version >= SPA_VERSION_REFRESERVATION) | |
693 | *resv_prop = ZFS_PROP_REFRESERVATION; | |
694 | else | |
695 | *resv_prop = ZFS_PROP_RESERVATION; | |
696 | ||
697 | return (0); | |
698 | } | |
699 | ||
700 | /* | |
701 | * Given an nvlist of properties to set, validates that they are correct, and | |
702 | * parses any numeric properties (index, boolean, etc) if they are specified as | |
703 | * strings. | |
704 | */ | |
b128c09f BB |
705 | nvlist_t * |
706 | zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, | |
34dc7c2f BB |
707 | uint64_t zoned, zfs_handle_t *zhp, const char *errbuf) |
708 | { | |
709 | nvpair_t *elem; | |
710 | uint64_t intval; | |
711 | char *strval; | |
712 | zfs_prop_t prop; | |
713 | nvlist_t *ret; | |
714 | int chosen_normal = -1; | |
715 | int chosen_utf = -1; | |
716 | ||
34dc7c2f BB |
717 | if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { |
718 | (void) no_memory(hdl); | |
719 | return (NULL); | |
720 | } | |
721 | ||
9babb374 BB |
722 | /* |
723 | * Make sure this property is valid and applies to this type. | |
724 | */ | |
725 | ||
34dc7c2f BB |
726 | elem = NULL; |
727 | while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { | |
728 | const char *propname = nvpair_name(elem); | |
729 | ||
9babb374 BB |
730 | prop = zfs_name_to_prop(propname); |
731 | if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { | |
34dc7c2f | 732 | /* |
9babb374 | 733 | * This is a user property: make sure it's a |
34dc7c2f BB |
734 | * string, and that it's less than ZAP_MAXNAMELEN. |
735 | */ | |
736 | if (nvpair_type(elem) != DATA_TYPE_STRING) { | |
737 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
738 | "'%s' must be a string"), propname); | |
739 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
740 | goto error; | |
741 | } | |
742 | ||
743 | if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { | |
744 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
745 | "property name '%s' is too long"), | |
746 | propname); | |
747 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
748 | goto error; | |
749 | } | |
750 | ||
751 | (void) nvpair_value_string(elem, &strval); | |
752 | if (nvlist_add_string(ret, propname, strval) != 0) { | |
753 | (void) no_memory(hdl); | |
754 | goto error; | |
755 | } | |
756 | continue; | |
757 | } | |
758 | ||
9babb374 BB |
759 | /* |
760 | * Currently, only user properties can be modified on | |
761 | * snapshots. | |
762 | */ | |
b128c09f BB |
763 | if (type == ZFS_TYPE_SNAPSHOT) { |
764 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
765 | "this property can not be modified for snapshots")); | |
766 | (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); | |
767 | goto error; | |
768 | } | |
769 | ||
9babb374 BB |
770 | if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { |
771 | zfs_userquota_prop_t uqtype; | |
772 | char newpropname[128]; | |
773 | char domain[128]; | |
774 | uint64_t rid; | |
775 | uint64_t valary[3]; | |
776 | ||
777 | if (userquota_propname_decode(propname, zoned, | |
778 | &uqtype, domain, sizeof (domain), &rid) != 0) { | |
779 | zfs_error_aux(hdl, | |
780 | dgettext(TEXT_DOMAIN, | |
781 | "'%s' has an invalid user/group name"), | |
782 | propname); | |
783 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
784 | goto error; | |
785 | } | |
786 | ||
787 | if (uqtype != ZFS_PROP_USERQUOTA && | |
788 | uqtype != ZFS_PROP_GROUPQUOTA) { | |
789 | zfs_error_aux(hdl, | |
790 | dgettext(TEXT_DOMAIN, "'%s' is readonly"), | |
791 | propname); | |
792 | (void) zfs_error(hdl, EZFS_PROPREADONLY, | |
793 | errbuf); | |
794 | goto error; | |
795 | } | |
796 | ||
797 | if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
798 | (void) nvpair_value_string(elem, &strval); | |
799 | if (strcmp(strval, "none") == 0) { | |
800 | intval = 0; | |
801 | } else if (zfs_nicestrtonum(hdl, | |
802 | strval, &intval) != 0) { | |
803 | (void) zfs_error(hdl, | |
804 | EZFS_BADPROP, errbuf); | |
805 | goto error; | |
806 | } | |
807 | } else if (nvpair_type(elem) == | |
808 | DATA_TYPE_UINT64) { | |
809 | (void) nvpair_value_uint64(elem, &intval); | |
810 | if (intval == 0) { | |
811 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
812 | "use 'none' to disable " | |
813 | "userquota/groupquota")); | |
814 | goto error; | |
815 | } | |
816 | } else { | |
817 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
818 | "'%s' must be a number"), propname); | |
819 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
820 | goto error; | |
821 | } | |
822 | ||
428870ff BB |
823 | /* |
824 | * Encode the prop name as | |
825 | * userquota@<hex-rid>-domain, to make it easy | |
826 | * for the kernel to decode. | |
827 | */ | |
9babb374 | 828 | (void) snprintf(newpropname, sizeof (newpropname), |
428870ff BB |
829 | "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], |
830 | (longlong_t)rid, domain); | |
9babb374 BB |
831 | valary[0] = uqtype; |
832 | valary[1] = rid; | |
833 | valary[2] = intval; | |
834 | if (nvlist_add_uint64_array(ret, newpropname, | |
835 | valary, 3) != 0) { | |
836 | (void) no_memory(hdl); | |
837 | goto error; | |
838 | } | |
839 | continue; | |
840 | } | |
841 | ||
842 | if (prop == ZPROP_INVAL) { | |
843 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
844 | "invalid property '%s'"), propname); | |
845 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
846 | goto error; | |
847 | } | |
848 | ||
34dc7c2f BB |
849 | if (!zfs_prop_valid_for_type(prop, type)) { |
850 | zfs_error_aux(hdl, | |
851 | dgettext(TEXT_DOMAIN, "'%s' does not " | |
852 | "apply to datasets of this type"), propname); | |
853 | (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); | |
854 | goto error; | |
855 | } | |
856 | ||
857 | if (zfs_prop_readonly(prop) && | |
858 | (!zfs_prop_setonce(prop) || zhp != NULL)) { | |
859 | zfs_error_aux(hdl, | |
860 | dgettext(TEXT_DOMAIN, "'%s' is readonly"), | |
861 | propname); | |
862 | (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); | |
863 | goto error; | |
864 | } | |
865 | ||
866 | if (zprop_parse_value(hdl, elem, prop, type, ret, | |
867 | &strval, &intval, errbuf) != 0) | |
868 | goto error; | |
869 | ||
870 | /* | |
871 | * Perform some additional checks for specific properties. | |
872 | */ | |
873 | switch (prop) { | |
874 | case ZFS_PROP_VERSION: | |
875 | { | |
876 | int version; | |
877 | ||
878 | if (zhp == NULL) | |
879 | break; | |
880 | version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); | |
881 | if (intval < version) { | |
882 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
883 | "Can not downgrade; already at version %u"), | |
884 | version); | |
885 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
886 | goto error; | |
887 | } | |
888 | break; | |
889 | } | |
890 | ||
891 | case ZFS_PROP_RECORDSIZE: | |
892 | case ZFS_PROP_VOLBLOCKSIZE: | |
893 | /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */ | |
894 | if (intval < SPA_MINBLOCKSIZE || | |
895 | intval > SPA_MAXBLOCKSIZE || !ISP2(intval)) { | |
896 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
897 | "'%s' must be power of 2 from %u " | |
898 | "to %uk"), propname, | |
899 | (uint_t)SPA_MINBLOCKSIZE, | |
900 | (uint_t)SPA_MAXBLOCKSIZE >> 10); | |
901 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
902 | goto error; | |
903 | } | |
904 | break; | |
905 | ||
428870ff BB |
906 | case ZFS_PROP_MLSLABEL: |
907 | { | |
d2c15e84 | 908 | #ifdef HAVE_MLSLABEL |
428870ff BB |
909 | /* |
910 | * Verify the mlslabel string and convert to | |
911 | * internal hex label string. | |
912 | */ | |
913 | ||
914 | m_label_t *new_sl; | |
915 | char *hex = NULL; /* internal label string */ | |
916 | ||
917 | /* Default value is already OK. */ | |
918 | if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) | |
919 | break; | |
920 | ||
921 | /* Verify the label can be converted to binary form */ | |
922 | if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || | |
923 | (str_to_label(strval, &new_sl, MAC_LABEL, | |
924 | L_NO_CORRECTION, NULL) == -1)) { | |
925 | goto badlabel; | |
34dc7c2f BB |
926 | } |
927 | ||
428870ff BB |
928 | /* Now translate to hex internal label string */ |
929 | if (label_to_str(new_sl, &hex, M_INTERNAL, | |
930 | DEF_NAMES) != 0) { | |
931 | if (hex) | |
932 | free(hex); | |
933 | goto badlabel; | |
934 | } | |
935 | m_label_free(new_sl); | |
936 | ||
937 | /* If string is already in internal form, we're done. */ | |
938 | if (strcmp(strval, hex) == 0) { | |
939 | free(hex); | |
940 | break; | |
941 | } | |
942 | ||
943 | /* Replace the label string with the internal form. */ | |
944 | (void) nvlist_remove(ret, zfs_prop_to_name(prop), | |
945 | DATA_TYPE_STRING); | |
946 | verify(nvlist_add_string(ret, zfs_prop_to_name(prop), | |
947 | hex) == 0); | |
948 | free(hex); | |
949 | ||
34dc7c2f BB |
950 | break; |
951 | ||
428870ff BB |
952 | badlabel: |
953 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
954 | "invalid mlslabel '%s'"), strval); | |
955 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
956 | m_label_free(new_sl); /* OK if null */ | |
957 | goto error; | |
d2c15e84 BB |
958 | #else |
959 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
960 | "mlslabels are unsupported")); | |
961 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
962 | goto error; | |
963 | #endif /* HAVE_MLSLABEL */ | |
428870ff BB |
964 | } |
965 | ||
34dc7c2f BB |
966 | case ZFS_PROP_MOUNTPOINT: |
967 | { | |
968 | namecheck_err_t why; | |
969 | ||
970 | if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || | |
971 | strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) | |
972 | break; | |
973 | ||
974 | if (mountpoint_namecheck(strval, &why)) { | |
975 | switch (why) { | |
976 | case NAME_ERR_LEADING_SLASH: | |
977 | zfs_error_aux(hdl, | |
978 | dgettext(TEXT_DOMAIN, | |
979 | "'%s' must be an absolute path, " | |
980 | "'none', or 'legacy'"), propname); | |
981 | break; | |
982 | case NAME_ERR_TOOLONG: | |
983 | zfs_error_aux(hdl, | |
984 | dgettext(TEXT_DOMAIN, | |
985 | "component of '%s' is too long"), | |
986 | propname); | |
987 | break; | |
e75c13c3 BB |
988 | default: |
989 | break; | |
34dc7c2f BB |
990 | } |
991 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
992 | goto error; | |
993 | } | |
994 | } | |
995 | ||
996 | /*FALLTHRU*/ | |
997 | ||
998 | case ZFS_PROP_SHARESMB: | |
999 | case ZFS_PROP_SHARENFS: | |
1000 | /* | |
1001 | * For the mountpoint and sharenfs or sharesmb | |
1002 | * properties, check if it can be set in a | |
1003 | * global/non-global zone based on | |
1004 | * the zoned property value: | |
1005 | * | |
1006 | * global zone non-global zone | |
1007 | * -------------------------------------------------- | |
1008 | * zoned=on mountpoint (no) mountpoint (yes) | |
1009 | * sharenfs (no) sharenfs (no) | |
1010 | * sharesmb (no) sharesmb (no) | |
1011 | * | |
1012 | * zoned=off mountpoint (yes) N/A | |
1013 | * sharenfs (yes) | |
1014 | * sharesmb (yes) | |
1015 | */ | |
1016 | if (zoned) { | |
1017 | if (getzoneid() == GLOBAL_ZONEID) { | |
1018 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1019 | "'%s' cannot be set on " | |
1020 | "dataset in a non-global zone"), | |
1021 | propname); | |
1022 | (void) zfs_error(hdl, EZFS_ZONED, | |
1023 | errbuf); | |
1024 | goto error; | |
1025 | } else if (prop == ZFS_PROP_SHARENFS || | |
1026 | prop == ZFS_PROP_SHARESMB) { | |
1027 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1028 | "'%s' cannot be set in " | |
1029 | "a non-global zone"), propname); | |
1030 | (void) zfs_error(hdl, EZFS_ZONED, | |
1031 | errbuf); | |
1032 | goto error; | |
1033 | } | |
1034 | } else if (getzoneid() != GLOBAL_ZONEID) { | |
1035 | /* | |
1036 | * If zoned property is 'off', this must be in | |
9babb374 | 1037 | * a global zone. If not, something is wrong. |
34dc7c2f BB |
1038 | */ |
1039 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1040 | "'%s' cannot be set while dataset " | |
1041 | "'zoned' property is set"), propname); | |
1042 | (void) zfs_error(hdl, EZFS_ZONED, errbuf); | |
1043 | goto error; | |
1044 | } | |
1045 | ||
1046 | /* | |
1047 | * At this point, it is legitimate to set the | |
1048 | * property. Now we want to make sure that the | |
1049 | * property value is valid if it is sharenfs. | |
1050 | */ | |
1051 | if ((prop == ZFS_PROP_SHARENFS || | |
1052 | prop == ZFS_PROP_SHARESMB) && | |
1053 | strcmp(strval, "on") != 0 && | |
1054 | strcmp(strval, "off") != 0) { | |
1055 | zfs_share_proto_t proto; | |
1056 | ||
1057 | if (prop == ZFS_PROP_SHARESMB) | |
1058 | proto = PROTO_SMB; | |
1059 | else | |
1060 | proto = PROTO_NFS; | |
1061 | ||
1062 | /* | |
1063 | * Must be an valid sharing protocol | |
1064 | * option string so init the libshare | |
1065 | * in order to enable the parser and | |
1066 | * then parse the options. We use the | |
1067 | * control API since we don't care about | |
1068 | * the current configuration and don't | |
1069 | * want the overhead of loading it | |
1070 | * until we actually do something. | |
1071 | */ | |
1072 | ||
1073 | if (zfs_init_libshare(hdl, | |
1074 | SA_INIT_CONTROL_API) != SA_OK) { | |
1075 | /* | |
1076 | * An error occurred so we can't do | |
1077 | * anything | |
1078 | */ | |
1079 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1080 | "'%s' cannot be set: problem " | |
1081 | "in share initialization"), | |
1082 | propname); | |
1083 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1084 | errbuf); | |
1085 | goto error; | |
1086 | } | |
1087 | ||
1088 | if (zfs_parse_options(strval, proto) != SA_OK) { | |
1089 | /* | |
1090 | * There was an error in parsing so | |
1091 | * deal with it by issuing an error | |
1092 | * message and leaving after | |
1093 | * uninitializing the the libshare | |
1094 | * interface. | |
1095 | */ | |
1096 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1097 | "'%s' cannot be set to invalid " | |
1098 | "options"), propname); | |
1099 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1100 | errbuf); | |
1101 | zfs_uninit_libshare(hdl); | |
1102 | goto error; | |
1103 | } | |
1104 | zfs_uninit_libshare(hdl); | |
1105 | } | |
1106 | ||
1107 | break; | |
1108 | case ZFS_PROP_UTF8ONLY: | |
1109 | chosen_utf = (int)intval; | |
1110 | break; | |
1111 | case ZFS_PROP_NORMALIZE: | |
1112 | chosen_normal = (int)intval; | |
1113 | break; | |
e75c13c3 BB |
1114 | default: |
1115 | break; | |
34dc7c2f BB |
1116 | } |
1117 | ||
1118 | /* | |
1119 | * For changes to existing volumes, we have some additional | |
1120 | * checks to enforce. | |
1121 | */ | |
1122 | if (type == ZFS_TYPE_VOLUME && zhp != NULL) { | |
1123 | uint64_t volsize = zfs_prop_get_int(zhp, | |
1124 | ZFS_PROP_VOLSIZE); | |
1125 | uint64_t blocksize = zfs_prop_get_int(zhp, | |
1126 | ZFS_PROP_VOLBLOCKSIZE); | |
1127 | char buf[64]; | |
1128 | ||
1129 | switch (prop) { | |
1130 | case ZFS_PROP_RESERVATION: | |
1131 | case ZFS_PROP_REFRESERVATION: | |
1132 | if (intval > volsize) { | |
1133 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1134 | "'%s' is greater than current " | |
1135 | "volume size"), propname); | |
1136 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1137 | errbuf); | |
1138 | goto error; | |
1139 | } | |
1140 | break; | |
1141 | ||
1142 | case ZFS_PROP_VOLSIZE: | |
1143 | if (intval % blocksize != 0) { | |
1144 | zfs_nicenum(blocksize, buf, | |
1145 | sizeof (buf)); | |
1146 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1147 | "'%s' must be a multiple of " | |
1148 | "volume block size (%s)"), | |
1149 | propname, buf); | |
1150 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1151 | errbuf); | |
1152 | goto error; | |
1153 | } | |
1154 | ||
1155 | if (intval == 0) { | |
1156 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1157 | "'%s' cannot be zero"), | |
1158 | propname); | |
1159 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1160 | errbuf); | |
1161 | goto error; | |
1162 | } | |
1163 | break; | |
e75c13c3 BB |
1164 | default: |
1165 | break; | |
34dc7c2f BB |
1166 | } |
1167 | } | |
1168 | } | |
1169 | ||
1170 | /* | |
1171 | * If normalization was chosen, but no UTF8 choice was made, | |
1172 | * enforce rejection of non-UTF8 names. | |
1173 | * | |
1174 | * If normalization was chosen, but rejecting non-UTF8 names | |
1175 | * was explicitly not chosen, it is an error. | |
1176 | */ | |
1177 | if (chosen_normal > 0 && chosen_utf < 0) { | |
1178 | if (nvlist_add_uint64(ret, | |
1179 | zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { | |
1180 | (void) no_memory(hdl); | |
1181 | goto error; | |
1182 | } | |
1183 | } else if (chosen_normal > 0 && chosen_utf == 0) { | |
1184 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1185 | "'%s' must be set 'on' if normalization chosen"), | |
1186 | zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); | |
1187 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
1188 | goto error; | |
1189 | } | |
572e2857 BB |
1190 | return (ret); |
1191 | ||
1192 | error: | |
1193 | nvlist_free(ret); | |
1194 | return (NULL); | |
1195 | } | |
1196 | ||
1197 | int | |
1198 | zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) | |
1199 | { | |
1200 | uint64_t old_volsize; | |
1201 | uint64_t new_volsize; | |
1202 | uint64_t old_reservation; | |
1203 | uint64_t new_reservation; | |
1204 | zfs_prop_t resv_prop; | |
34dc7c2f BB |
1205 | |
1206 | /* | |
1207 | * If this is an existing volume, and someone is setting the volsize, | |
1208 | * make sure that it matches the reservation, or add it if necessary. | |
1209 | */ | |
572e2857 BB |
1210 | old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); |
1211 | if (zfs_which_resv_prop(zhp, &resv_prop) < 0) | |
1212 | return (-1); | |
1213 | old_reservation = zfs_prop_get_int(zhp, resv_prop); | |
1214 | if ((zvol_volsize_to_reservation(old_volsize, zhp->zfs_props) != | |
1215 | old_reservation) || nvlist_lookup_uint64(nvl, | |
1216 | zfs_prop_to_name(resv_prop), &new_reservation) != ENOENT) { | |
1217 | return (0); | |
34dc7c2f | 1218 | } |
572e2857 BB |
1219 | if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), |
1220 | &new_volsize) != 0) | |
1221 | return (-1); | |
1222 | new_reservation = zvol_volsize_to_reservation(new_volsize, | |
1223 | zhp->zfs_props); | |
1224 | if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), | |
1225 | new_reservation) != 0) { | |
1226 | (void) no_memory(zhp->zfs_hdl); | |
1227 | return (-1); | |
1228 | } | |
1229 | return (1); | |
34dc7c2f BB |
1230 | } |
1231 | ||
428870ff BB |
1232 | void |
1233 | zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, | |
1234 | char *errbuf) | |
1235 | { | |
1236 | switch (err) { | |
1237 | ||
1238 | case ENOSPC: | |
1239 | /* | |
1240 | * For quotas and reservations, ENOSPC indicates | |
1241 | * something different; setting a quota or reservation | |
1242 | * doesn't use any disk space. | |
1243 | */ | |
1244 | switch (prop) { | |
1245 | case ZFS_PROP_QUOTA: | |
1246 | case ZFS_PROP_REFQUOTA: | |
1247 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1248 | "size is less than current used or " | |
1249 | "reserved space")); | |
1250 | (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); | |
1251 | break; | |
1252 | ||
1253 | case ZFS_PROP_RESERVATION: | |
1254 | case ZFS_PROP_REFRESERVATION: | |
1255 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1256 | "size is greater than available space")); | |
1257 | (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); | |
1258 | break; | |
1259 | ||
1260 | default: | |
1261 | (void) zfs_standard_error(hdl, err, errbuf); | |
1262 | break; | |
1263 | } | |
1264 | break; | |
1265 | ||
1266 | case EBUSY: | |
1267 | (void) zfs_standard_error(hdl, EBUSY, errbuf); | |
1268 | break; | |
1269 | ||
1270 | case EROFS: | |
1271 | (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); | |
1272 | break; | |
1273 | ||
1274 | case ENOTSUP: | |
1275 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1276 | "pool and or dataset must be upgraded to set this " | |
1277 | "property or value")); | |
1278 | (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); | |
1279 | break; | |
1280 | ||
1281 | case ERANGE: | |
1282 | if (prop == ZFS_PROP_COMPRESSION) { | |
1283 | (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1284 | "property setting is not allowed on " | |
1285 | "bootable datasets")); | |
1286 | (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); | |
1287 | } else { | |
1288 | (void) zfs_standard_error(hdl, err, errbuf); | |
1289 | } | |
1290 | break; | |
1291 | ||
1292 | case EINVAL: | |
1293 | if (prop == ZPROP_INVAL) { | |
1294 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
1295 | } else { | |
1296 | (void) zfs_standard_error(hdl, err, errbuf); | |
1297 | } | |
1298 | break; | |
1299 | ||
1300 | case EOVERFLOW: | |
1301 | /* | |
1302 | * This platform can't address a volume this big. | |
1303 | */ | |
1304 | #ifdef _ILP32 | |
1305 | if (prop == ZFS_PROP_VOLSIZE) { | |
1306 | (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); | |
1307 | break; | |
1308 | } | |
1309 | #endif | |
1310 | /* FALLTHROUGH */ | |
1311 | default: | |
1312 | (void) zfs_standard_error(hdl, err, errbuf); | |
1313 | } | |
1314 | } | |
1315 | ||
34dc7c2f BB |
1316 | /* |
1317 | * Given a property name and value, set the property for the given dataset. | |
1318 | */ | |
1319 | int | |
1320 | zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) | |
1321 | { | |
2598c001 | 1322 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1323 | int ret = -1; |
1324 | prop_changelist_t *cl = NULL; | |
1325 | char errbuf[1024]; | |
1326 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
1327 | nvlist_t *nvl = NULL, *realprops; | |
1328 | zfs_prop_t prop; | |
b128c09f BB |
1329 | boolean_t do_prefix; |
1330 | uint64_t idx; | |
d4ed6673 | 1331 | int added_resv = 0; |
34dc7c2f BB |
1332 | |
1333 | (void) snprintf(errbuf, sizeof (errbuf), | |
1334 | dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), | |
1335 | zhp->zfs_name); | |
1336 | ||
1337 | if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || | |
1338 | nvlist_add_string(nvl, propname, propval) != 0) { | |
1339 | (void) no_memory(hdl); | |
1340 | goto error; | |
1341 | } | |
1342 | ||
b128c09f | 1343 | if ((realprops = zfs_valid_proplist(hdl, zhp->zfs_type, nvl, |
34dc7c2f BB |
1344 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL) |
1345 | goto error; | |
1346 | ||
1347 | nvlist_free(nvl); | |
1348 | nvl = realprops; | |
1349 | ||
1350 | prop = zfs_name_to_prop(propname); | |
1351 | ||
572e2857 BB |
1352 | if (prop == ZFS_PROP_VOLSIZE) { |
1353 | if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) | |
1354 | goto error; | |
1355 | } | |
1356 | ||
b128c09f | 1357 | if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) |
34dc7c2f BB |
1358 | goto error; |
1359 | ||
1360 | if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { | |
1361 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1362 | "child dataset with inherited mountpoint is used " | |
1363 | "in a non-global zone")); | |
1364 | ret = zfs_error(hdl, EZFS_ZONED, errbuf); | |
1365 | goto error; | |
1366 | } | |
1367 | ||
b128c09f BB |
1368 | /* |
1369 | * If the dataset's canmount property is being set to noauto, | |
1370 | * then we want to prevent unmounting & remounting it. | |
1371 | */ | |
1372 | do_prefix = !((prop == ZFS_PROP_CANMOUNT) && | |
1373 | (zprop_string_to_index(prop, propval, &idx, | |
1374 | ZFS_TYPE_DATASET) == 0) && (idx == ZFS_CANMOUNT_NOAUTO)); | |
34dc7c2f BB |
1375 | |
1376 | if (do_prefix && (ret = changelist_prefix(cl)) != 0) | |
b128c09f | 1377 | goto error; |
34dc7c2f BB |
1378 | |
1379 | /* | |
1380 | * Execute the corresponding ioctl() to set this property. | |
1381 | */ | |
1382 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1383 | ||
1384 | if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) | |
1385 | goto error; | |
1386 | ||
1387 | ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); | |
9babb374 | 1388 | |
34dc7c2f | 1389 | if (ret != 0) { |
428870ff | 1390 | zfs_setprop_error(hdl, prop, errno, errbuf); |
572e2857 BB |
1391 | if (added_resv && errno == ENOSPC) { |
1392 | /* clean up the volsize property we tried to set */ | |
1393 | uint64_t old_volsize = zfs_prop_get_int(zhp, | |
1394 | ZFS_PROP_VOLSIZE); | |
1395 | nvlist_free(nvl); | |
1396 | zcmd_free_nvlists(&zc); | |
1397 | if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) | |
1398 | goto error; | |
1399 | if (nvlist_add_uint64(nvl, | |
1400 | zfs_prop_to_name(ZFS_PROP_VOLSIZE), | |
1401 | old_volsize) != 0) | |
1402 | goto error; | |
1403 | if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) | |
1404 | goto error; | |
1405 | (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); | |
1406 | } | |
34dc7c2f BB |
1407 | } else { |
1408 | if (do_prefix) | |
1409 | ret = changelist_postfix(cl); | |
1410 | ||
1411 | /* | |
1412 | * Refresh the statistics so the new property value | |
1413 | * is reflected. | |
1414 | */ | |
1415 | if (ret == 0) | |
1416 | (void) get_stats(zhp); | |
1417 | } | |
1418 | ||
1419 | error: | |
1420 | nvlist_free(nvl); | |
1421 | zcmd_free_nvlists(&zc); | |
1422 | if (cl) | |
1423 | changelist_free(cl); | |
1424 | return (ret); | |
1425 | } | |
1426 | ||
1427 | /* | |
428870ff BB |
1428 | * Given a property, inherit the value from the parent dataset, or if received |
1429 | * is TRUE, revert to the received value, if any. | |
34dc7c2f BB |
1430 | */ |
1431 | int | |
428870ff | 1432 | zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) |
34dc7c2f | 1433 | { |
2598c001 | 1434 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1435 | int ret; |
1436 | prop_changelist_t *cl; | |
1437 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
1438 | char errbuf[1024]; | |
1439 | zfs_prop_t prop; | |
1440 | ||
1441 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1442 | "cannot inherit %s for '%s'"), propname, zhp->zfs_name); | |
1443 | ||
428870ff | 1444 | zc.zc_cookie = received; |
34dc7c2f BB |
1445 | if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { |
1446 | /* | |
1447 | * For user properties, the amount of work we have to do is very | |
1448 | * small, so just do it here. | |
1449 | */ | |
1450 | if (!zfs_prop_user(propname)) { | |
1451 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1452 | "invalid property")); | |
1453 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
1454 | } | |
1455 | ||
1456 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1457 | (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); | |
1458 | ||
1459 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) | |
1460 | return (zfs_standard_error(hdl, errno, errbuf)); | |
1461 | ||
1462 | return (0); | |
1463 | } | |
1464 | ||
1465 | /* | |
1466 | * Verify that this property is inheritable. | |
1467 | */ | |
1468 | if (zfs_prop_readonly(prop)) | |
1469 | return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); | |
1470 | ||
428870ff | 1471 | if (!zfs_prop_inheritable(prop) && !received) |
34dc7c2f BB |
1472 | return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); |
1473 | ||
1474 | /* | |
1475 | * Check to see if the value applies to this type | |
1476 | */ | |
1477 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) | |
1478 | return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); | |
1479 | ||
1480 | /* | |
572e2857 | 1481 | * Normalize the name, to get rid of shorthand abbreviations. |
34dc7c2f BB |
1482 | */ |
1483 | propname = zfs_prop_to_name(prop); | |
1484 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1485 | (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); | |
1486 | ||
1487 | if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && | |
1488 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { | |
1489 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1490 | "dataset is used in a non-global zone")); | |
1491 | return (zfs_error(hdl, EZFS_ZONED, errbuf)); | |
1492 | } | |
1493 | ||
1494 | /* | |
1495 | * Determine datasets which will be affected by this change, if any. | |
1496 | */ | |
b128c09f | 1497 | if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) |
34dc7c2f BB |
1498 | return (-1); |
1499 | ||
1500 | if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { | |
1501 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1502 | "child dataset with inherited mountpoint is used " | |
1503 | "in a non-global zone")); | |
1504 | ret = zfs_error(hdl, EZFS_ZONED, errbuf); | |
1505 | goto error; | |
1506 | } | |
1507 | ||
1508 | if ((ret = changelist_prefix(cl)) != 0) | |
1509 | goto error; | |
1510 | ||
1511 | if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { | |
1512 | return (zfs_standard_error(hdl, errno, errbuf)); | |
1513 | } else { | |
1514 | ||
1515 | if ((ret = changelist_postfix(cl)) != 0) | |
1516 | goto error; | |
1517 | ||
1518 | /* | |
1519 | * Refresh the statistics so the new property is reflected. | |
1520 | */ | |
1521 | (void) get_stats(zhp); | |
1522 | } | |
1523 | ||
1524 | error: | |
1525 | changelist_free(cl); | |
1526 | return (ret); | |
1527 | } | |
1528 | ||
1529 | /* | |
1530 | * True DSL properties are stored in an nvlist. The following two functions | |
1531 | * extract them appropriately. | |
1532 | */ | |
1533 | static uint64_t | |
1534 | getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) | |
1535 | { | |
1536 | nvlist_t *nv; | |
1537 | uint64_t value; | |
1538 | ||
1539 | *source = NULL; | |
1540 | if (nvlist_lookup_nvlist(zhp->zfs_props, | |
1541 | zfs_prop_to_name(prop), &nv) == 0) { | |
1542 | verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); | |
1543 | (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); | |
1544 | } else { | |
9babb374 BB |
1545 | verify(!zhp->zfs_props_table || |
1546 | zhp->zfs_props_table[prop] == B_TRUE); | |
34dc7c2f BB |
1547 | value = zfs_prop_default_numeric(prop); |
1548 | *source = ""; | |
1549 | } | |
1550 | ||
1551 | return (value); | |
1552 | } | |
1553 | ||
1554 | static char * | |
1555 | getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) | |
1556 | { | |
1557 | nvlist_t *nv; | |
1558 | char *value; | |
1559 | ||
1560 | *source = NULL; | |
1561 | if (nvlist_lookup_nvlist(zhp->zfs_props, | |
1562 | zfs_prop_to_name(prop), &nv) == 0) { | |
1563 | verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); | |
1564 | (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); | |
1565 | } else { | |
9babb374 BB |
1566 | verify(!zhp->zfs_props_table || |
1567 | zhp->zfs_props_table[prop] == B_TRUE); | |
34dc7c2f BB |
1568 | if ((value = (char *)zfs_prop_default_string(prop)) == NULL) |
1569 | value = ""; | |
1570 | *source = ""; | |
1571 | } | |
1572 | ||
1573 | return (value); | |
1574 | } | |
1575 | ||
428870ff BB |
1576 | static boolean_t |
1577 | zfs_is_recvd_props_mode(zfs_handle_t *zhp) | |
1578 | { | |
1579 | return (zhp->zfs_props == zhp->zfs_recvd_props); | |
1580 | } | |
1581 | ||
1582 | static void | |
1583 | zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) | |
1584 | { | |
1585 | *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; | |
1586 | zhp->zfs_props = zhp->zfs_recvd_props; | |
1587 | } | |
1588 | ||
1589 | static void | |
1590 | zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) | |
1591 | { | |
1592 | zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; | |
1593 | *cookie = 0; | |
1594 | } | |
1595 | ||
34dc7c2f BB |
1596 | /* |
1597 | * Internal function for getting a numeric property. Both zfs_prop_get() and | |
1598 | * zfs_prop_get_int() are built using this interface. | |
1599 | * | |
1600 | * Certain properties can be overridden using 'mount -o'. In this case, scan | |
9a616b5d | 1601 | * the contents of the /etc/mtab entry, searching for the appropriate options. |
34dc7c2f BB |
1602 | * If they differ from the on-disk values, report the current values and mark |
1603 | * the source "temporary". | |
1604 | */ | |
1605 | static int | |
1606 | get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, | |
1607 | char **source, uint64_t *val) | |
1608 | { | |
2598c001 | 1609 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1610 | nvlist_t *zplprops = NULL; |
1611 | struct mnttab mnt; | |
1612 | char *mntopt_on = NULL; | |
1613 | char *mntopt_off = NULL; | |
428870ff | 1614 | boolean_t received = zfs_is_recvd_props_mode(zhp); |
34dc7c2f BB |
1615 | |
1616 | *source = NULL; | |
1617 | ||
1618 | switch (prop) { | |
1619 | case ZFS_PROP_ATIME: | |
1620 | mntopt_on = MNTOPT_ATIME; | |
1621 | mntopt_off = MNTOPT_NOATIME; | |
1622 | break; | |
1623 | ||
1624 | case ZFS_PROP_DEVICES: | |
1625 | mntopt_on = MNTOPT_DEVICES; | |
1626 | mntopt_off = MNTOPT_NODEVICES; | |
1627 | break; | |
1628 | ||
1629 | case ZFS_PROP_EXEC: | |
1630 | mntopt_on = MNTOPT_EXEC; | |
1631 | mntopt_off = MNTOPT_NOEXEC; | |
1632 | break; | |
1633 | ||
1634 | case ZFS_PROP_READONLY: | |
1635 | mntopt_on = MNTOPT_RO; | |
1636 | mntopt_off = MNTOPT_RW; | |
1637 | break; | |
1638 | ||
1639 | case ZFS_PROP_SETUID: | |
1640 | mntopt_on = MNTOPT_SETUID; | |
1641 | mntopt_off = MNTOPT_NOSETUID; | |
1642 | break; | |
1643 | ||
1644 | case ZFS_PROP_XATTR: | |
1645 | mntopt_on = MNTOPT_XATTR; | |
1646 | mntopt_off = MNTOPT_NOXATTR; | |
1647 | break; | |
1648 | ||
1649 | case ZFS_PROP_NBMAND: | |
1650 | mntopt_on = MNTOPT_NBMAND; | |
1651 | mntopt_off = MNTOPT_NONBMAND; | |
1652 | break; | |
e75c13c3 BB |
1653 | default: |
1654 | break; | |
34dc7c2f BB |
1655 | } |
1656 | ||
1657 | /* | |
1658 | * Because looking up the mount options is potentially expensive | |
9a616b5d | 1659 | * (iterating over all of /etc/mtab), we defer its calculation until |
34dc7c2f BB |
1660 | * we're looking up a property which requires its presence. |
1661 | */ | |
1662 | if (!zhp->zfs_mntcheck && | |
1663 | (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { | |
fb5f0bc8 BB |
1664 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
1665 | struct mnttab entry; | |
34dc7c2f | 1666 | |
fb5f0bc8 BB |
1667 | if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { |
1668 | zhp->zfs_mntopts = zfs_strdup(hdl, | |
34dc7c2f BB |
1669 | entry.mnt_mntopts); |
1670 | if (zhp->zfs_mntopts == NULL) | |
1671 | return (-1); | |
1672 | } | |
1673 | ||
1674 | zhp->zfs_mntcheck = B_TRUE; | |
1675 | } | |
1676 | ||
1677 | if (zhp->zfs_mntopts == NULL) | |
1678 | mnt.mnt_mntopts = ""; | |
1679 | else | |
1680 | mnt.mnt_mntopts = zhp->zfs_mntopts; | |
1681 | ||
1682 | switch (prop) { | |
1683 | case ZFS_PROP_ATIME: | |
1684 | case ZFS_PROP_DEVICES: | |
1685 | case ZFS_PROP_EXEC: | |
1686 | case ZFS_PROP_READONLY: | |
1687 | case ZFS_PROP_SETUID: | |
1688 | case ZFS_PROP_XATTR: | |
1689 | case ZFS_PROP_NBMAND: | |
1690 | *val = getprop_uint64(zhp, prop, source); | |
1691 | ||
428870ff BB |
1692 | if (received) |
1693 | break; | |
1694 | ||
34dc7c2f BB |
1695 | if (hasmntopt(&mnt, mntopt_on) && !*val) { |
1696 | *val = B_TRUE; | |
1697 | if (src) | |
1698 | *src = ZPROP_SRC_TEMPORARY; | |
1699 | } else if (hasmntopt(&mnt, mntopt_off) && *val) { | |
1700 | *val = B_FALSE; | |
1701 | if (src) | |
1702 | *src = ZPROP_SRC_TEMPORARY; | |
1703 | } | |
1704 | break; | |
1705 | ||
1706 | case ZFS_PROP_CANMOUNT: | |
428870ff | 1707 | case ZFS_PROP_VOLSIZE: |
34dc7c2f BB |
1708 | case ZFS_PROP_QUOTA: |
1709 | case ZFS_PROP_REFQUOTA: | |
1710 | case ZFS_PROP_RESERVATION: | |
1711 | case ZFS_PROP_REFRESERVATION: | |
1712 | *val = getprop_uint64(zhp, prop, source); | |
428870ff BB |
1713 | |
1714 | if (*source == NULL) { | |
1715 | /* not default, must be local */ | |
34dc7c2f | 1716 | *source = zhp->zfs_name; |
428870ff | 1717 | } |
34dc7c2f BB |
1718 | break; |
1719 | ||
1720 | case ZFS_PROP_MOUNTED: | |
1721 | *val = (zhp->zfs_mntopts != NULL); | |
1722 | break; | |
1723 | ||
1724 | case ZFS_PROP_NUMCLONES: | |
1725 | *val = zhp->zfs_dmustats.dds_num_clones; | |
1726 | break; | |
1727 | ||
1728 | case ZFS_PROP_VERSION: | |
1729 | case ZFS_PROP_NORMALIZE: | |
1730 | case ZFS_PROP_UTF8ONLY: | |
1731 | case ZFS_PROP_CASE: | |
1732 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || | |
1733 | zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) | |
1734 | return (-1); | |
1735 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1736 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { | |
1737 | zcmd_free_nvlists(&zc); | |
45d1cae3 | 1738 | return (-1); |
34dc7c2f BB |
1739 | } |
1740 | if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || | |
1741 | nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), | |
1742 | val) != 0) { | |
1743 | zcmd_free_nvlists(&zc); | |
45d1cae3 | 1744 | return (-1); |
34dc7c2f BB |
1745 | } |
1746 | if (zplprops) | |
1747 | nvlist_free(zplprops); | |
1748 | zcmd_free_nvlists(&zc); | |
1749 | break; | |
1750 | ||
1751 | default: | |
1752 | switch (zfs_prop_get_type(prop)) { | |
1753 | case PROP_TYPE_NUMBER: | |
1754 | case PROP_TYPE_INDEX: | |
1755 | *val = getprop_uint64(zhp, prop, source); | |
b128c09f | 1756 | /* |
9babb374 | 1757 | * If we tried to use a default value for a |
b128c09f | 1758 | * readonly property, it means that it was not |
428870ff | 1759 | * present. |
b128c09f BB |
1760 | */ |
1761 | if (zfs_prop_readonly(prop) && | |
428870ff BB |
1762 | *source != NULL && (*source)[0] == '\0') { |
1763 | *source = NULL; | |
b128c09f | 1764 | } |
34dc7c2f BB |
1765 | break; |
1766 | ||
1767 | case PROP_TYPE_STRING: | |
1768 | default: | |
1769 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
1770 | "cannot get non-numeric property")); | |
1771 | return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, | |
1772 | dgettext(TEXT_DOMAIN, "internal error"))); | |
1773 | } | |
1774 | } | |
1775 | ||
1776 | return (0); | |
1777 | } | |
1778 | ||
1779 | /* | |
1780 | * Calculate the source type, given the raw source string. | |
1781 | */ | |
1782 | static void | |
1783 | get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, | |
1784 | char *statbuf, size_t statlen) | |
1785 | { | |
1786 | if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) | |
1787 | return; | |
1788 | ||
1789 | if (source == NULL) { | |
1790 | *srctype = ZPROP_SRC_NONE; | |
1791 | } else if (source[0] == '\0') { | |
1792 | *srctype = ZPROP_SRC_DEFAULT; | |
428870ff BB |
1793 | } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { |
1794 | *srctype = ZPROP_SRC_RECEIVED; | |
34dc7c2f BB |
1795 | } else { |
1796 | if (strcmp(source, zhp->zfs_name) == 0) { | |
1797 | *srctype = ZPROP_SRC_LOCAL; | |
1798 | } else { | |
1799 | (void) strlcpy(statbuf, source, statlen); | |
1800 | *srctype = ZPROP_SRC_INHERITED; | |
1801 | } | |
1802 | } | |
1803 | ||
1804 | } | |
1805 | ||
428870ff BB |
1806 | int |
1807 | zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, | |
1808 | size_t proplen, boolean_t literal) | |
1809 | { | |
1810 | zfs_prop_t prop; | |
1811 | int err = 0; | |
1812 | ||
1813 | if (zhp->zfs_recvd_props == NULL) | |
1814 | if (get_recvd_props_ioctl(zhp) != 0) | |
1815 | return (-1); | |
1816 | ||
1817 | prop = zfs_name_to_prop(propname); | |
1818 | ||
1819 | if (prop != ZPROP_INVAL) { | |
1820 | uint64_t cookie; | |
1821 | if (!nvlist_exists(zhp->zfs_recvd_props, propname)) | |
1822 | return (-1); | |
1823 | zfs_set_recvd_props_mode(zhp, &cookie); | |
1824 | err = zfs_prop_get(zhp, prop, propbuf, proplen, | |
1825 | NULL, NULL, 0, literal); | |
1826 | zfs_unset_recvd_props_mode(zhp, &cookie); | |
1827 | } else if (zfs_prop_userquota(propname)) { | |
1828 | return (-1); | |
1829 | } else { | |
1830 | nvlist_t *propval; | |
1831 | char *recvdval; | |
1832 | if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, | |
1833 | propname, &propval) != 0) | |
1834 | return (-1); | |
1835 | verify(nvlist_lookup_string(propval, ZPROP_VALUE, | |
1836 | &recvdval) == 0); | |
1837 | (void) strlcpy(propbuf, recvdval, proplen); | |
1838 | } | |
1839 | ||
1840 | return (err == 0 ? 0 : -1); | |
1841 | } | |
1842 | ||
34dc7c2f BB |
1843 | /* |
1844 | * Retrieve a property from the given object. If 'literal' is specified, then | |
1845 | * numbers are left as exact values. Otherwise, numbers are converted to a | |
1846 | * human-readable form. | |
1847 | * | |
1848 | * Returns 0 on success, or -1 on error. | |
1849 | */ | |
1850 | int | |
1851 | zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, | |
1852 | zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) | |
1853 | { | |
1854 | char *source = NULL; | |
1855 | uint64_t val; | |
1856 | char *str; | |
34dc7c2f | 1857 | const char *strval; |
428870ff | 1858 | boolean_t received = zfs_is_recvd_props_mode(zhp); |
34dc7c2f BB |
1859 | |
1860 | /* | |
1861 | * Check to see if this property applies to our object | |
1862 | */ | |
1863 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) | |
1864 | return (-1); | |
1865 | ||
428870ff BB |
1866 | if (received && zfs_prop_readonly(prop)) |
1867 | return (-1); | |
1868 | ||
34dc7c2f BB |
1869 | if (src) |
1870 | *src = ZPROP_SRC_NONE; | |
1871 | ||
1872 | switch (prop) { | |
1873 | case ZFS_PROP_CREATION: | |
1874 | /* | |
1875 | * 'creation' is a time_t stored in the statistics. We convert | |
1876 | * this into a string unless 'literal' is specified. | |
1877 | */ | |
1878 | { | |
1879 | val = getprop_uint64(zhp, prop, &source); | |
1880 | time_t time = (time_t)val; | |
1881 | struct tm t; | |
1882 | ||
1883 | if (literal || | |
1884 | localtime_r(&time, &t) == NULL || | |
1885 | strftime(propbuf, proplen, "%a %b %e %k:%M %Y", | |
1886 | &t) == 0) | |
b8864a23 | 1887 | (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t) val); |
34dc7c2f BB |
1888 | } |
1889 | break; | |
1890 | ||
1891 | case ZFS_PROP_MOUNTPOINT: | |
1892 | /* | |
1893 | * Getting the precise mountpoint can be tricky. | |
1894 | * | |
1895 | * - for 'none' or 'legacy', return those values. | |
34dc7c2f BB |
1896 | * - for inherited mountpoints, we want to take everything |
1897 | * after our ancestor and append it to the inherited value. | |
1898 | * | |
1899 | * If the pool has an alternate root, we want to prepend that | |
1900 | * root to any values we return. | |
1901 | */ | |
b128c09f | 1902 | |
34dc7c2f BB |
1903 | str = getprop_string(zhp, prop, &source); |
1904 | ||
b128c09f BB |
1905 | if (str[0] == '/') { |
1906 | char buf[MAXPATHLEN]; | |
1907 | char *root = buf; | |
428870ff | 1908 | const char *relpath; |
34dc7c2f | 1909 | |
428870ff BB |
1910 | /* |
1911 | * If we inherit the mountpoint, even from a dataset | |
1912 | * with a received value, the source will be the path of | |
1913 | * the dataset we inherit from. If source is | |
1914 | * ZPROP_SOURCE_VAL_RECVD, the received value is not | |
1915 | * inherited. | |
1916 | */ | |
1917 | if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { | |
1918 | relpath = ""; | |
1919 | } else { | |
1920 | relpath = zhp->zfs_name + strlen(source); | |
1921 | if (relpath[0] == '/') | |
1922 | relpath++; | |
1923 | } | |
b128c09f BB |
1924 | |
1925 | if ((zpool_get_prop(zhp->zpool_hdl, | |
1926 | ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL)) || | |
1927 | (strcmp(root, "-") == 0)) | |
1928 | root[0] = '\0'; | |
1929 | /* | |
1930 | * Special case an alternate root of '/'. This will | |
1931 | * avoid having multiple leading slashes in the | |
1932 | * mountpoint path. | |
1933 | */ | |
1934 | if (strcmp(root, "/") == 0) | |
1935 | root++; | |
1936 | ||
1937 | /* | |
1938 | * If the mountpoint is '/' then skip over this | |
1939 | * if we are obtaining either an alternate root or | |
1940 | * an inherited mountpoint. | |
1941 | */ | |
1942 | if (str[1] == '\0' && (root[0] != '\0' || | |
1943 | relpath[0] != '\0')) | |
34dc7c2f BB |
1944 | str++; |
1945 | ||
1946 | if (relpath[0] == '\0') | |
1947 | (void) snprintf(propbuf, proplen, "%s%s", | |
1948 | root, str); | |
1949 | else | |
1950 | (void) snprintf(propbuf, proplen, "%s%s%s%s", | |
1951 | root, str, relpath[0] == '@' ? "" : "/", | |
1952 | relpath); | |
1953 | } else { | |
1954 | /* 'legacy' or 'none' */ | |
1955 | (void) strlcpy(propbuf, str, proplen); | |
1956 | } | |
1957 | ||
1958 | break; | |
1959 | ||
1960 | case ZFS_PROP_ORIGIN: | |
1961 | (void) strlcpy(propbuf, getprop_string(zhp, prop, &source), | |
1962 | proplen); | |
1963 | /* | |
1964 | * If there is no parent at all, return failure to indicate that | |
1965 | * it doesn't apply to this dataset. | |
1966 | */ | |
1967 | if (propbuf[0] == '\0') | |
1968 | return (-1); | |
1969 | break; | |
1970 | ||
1971 | case ZFS_PROP_QUOTA: | |
1972 | case ZFS_PROP_REFQUOTA: | |
1973 | case ZFS_PROP_RESERVATION: | |
1974 | case ZFS_PROP_REFRESERVATION: | |
1975 | ||
1976 | if (get_numeric_property(zhp, prop, src, &source, &val) != 0) | |
1977 | return (-1); | |
1978 | ||
1979 | /* | |
1980 | * If quota or reservation is 0, we translate this into 'none' | |
1981 | * (unless literal is set), and indicate that it's the default | |
1982 | * value. Otherwise, we print the number nicely and indicate | |
1983 | * that its set locally. | |
1984 | */ | |
1985 | if (val == 0) { | |
1986 | if (literal) | |
1987 | (void) strlcpy(propbuf, "0", proplen); | |
1988 | else | |
1989 | (void) strlcpy(propbuf, "none", proplen); | |
1990 | } else { | |
1991 | if (literal) | |
1992 | (void) snprintf(propbuf, proplen, "%llu", | |
1993 | (u_longlong_t)val); | |
1994 | else | |
1995 | zfs_nicenum(val, propbuf, proplen); | |
1996 | } | |
1997 | break; | |
1998 | ||
1999 | case ZFS_PROP_COMPRESSRATIO: | |
2000 | if (get_numeric_property(zhp, prop, src, &source, &val) != 0) | |
2001 | return (-1); | |
428870ff BB |
2002 | (void) snprintf(propbuf, proplen, "%llu.%02llux", |
2003 | (u_longlong_t)(val / 100), | |
2004 | (u_longlong_t)(val % 100)); | |
34dc7c2f BB |
2005 | break; |
2006 | ||
2007 | case ZFS_PROP_TYPE: | |
2008 | switch (zhp->zfs_type) { | |
2009 | case ZFS_TYPE_FILESYSTEM: | |
2010 | str = "filesystem"; | |
2011 | break; | |
2012 | case ZFS_TYPE_VOLUME: | |
2013 | str = "volume"; | |
2014 | break; | |
2015 | case ZFS_TYPE_SNAPSHOT: | |
2016 | str = "snapshot"; | |
2017 | break; | |
2018 | default: | |
2019 | abort(); | |
2020 | } | |
2021 | (void) snprintf(propbuf, proplen, "%s", str); | |
2022 | break; | |
2023 | ||
2024 | case ZFS_PROP_MOUNTED: | |
2025 | /* | |
2026 | * The 'mounted' property is a pseudo-property that described | |
2027 | * whether the filesystem is currently mounted. Even though | |
2028 | * it's a boolean value, the typical values of "on" and "off" | |
2029 | * don't make sense, so we translate to "yes" and "no". | |
2030 | */ | |
2031 | if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, | |
2032 | src, &source, &val) != 0) | |
2033 | return (-1); | |
2034 | if (val) | |
2035 | (void) strlcpy(propbuf, "yes", proplen); | |
2036 | else | |
2037 | (void) strlcpy(propbuf, "no", proplen); | |
2038 | break; | |
2039 | ||
2040 | case ZFS_PROP_NAME: | |
2041 | /* | |
2042 | * The 'name' property is a pseudo-property derived from the | |
2043 | * dataset name. It is presented as a real property to simplify | |
2044 | * consumers. | |
2045 | */ | |
2046 | (void) strlcpy(propbuf, zhp->zfs_name, proplen); | |
2047 | break; | |
2048 | ||
428870ff BB |
2049 | case ZFS_PROP_MLSLABEL: |
2050 | { | |
d2c15e84 | 2051 | #ifdef HAVE_MLSLABEL |
428870ff BB |
2052 | m_label_t *new_sl = NULL; |
2053 | char *ascii = NULL; /* human readable label */ | |
2054 | ||
2055 | (void) strlcpy(propbuf, | |
2056 | getprop_string(zhp, prop, &source), proplen); | |
2057 | ||
2058 | if (literal || (strcasecmp(propbuf, | |
2059 | ZFS_MLSLABEL_DEFAULT) == 0)) | |
2060 | break; | |
2061 | ||
2062 | /* | |
2063 | * Try to translate the internal hex string to | |
2064 | * human-readable output. If there are any | |
2065 | * problems just use the hex string. | |
2066 | */ | |
2067 | ||
2068 | if (str_to_label(propbuf, &new_sl, MAC_LABEL, | |
2069 | L_NO_CORRECTION, NULL) == -1) { | |
2070 | m_label_free(new_sl); | |
2071 | break; | |
2072 | } | |
2073 | ||
2074 | if (label_to_str(new_sl, &ascii, M_LABEL, | |
2075 | DEF_NAMES) != 0) { | |
2076 | if (ascii) | |
2077 | free(ascii); | |
2078 | m_label_free(new_sl); | |
2079 | break; | |
2080 | } | |
2081 | m_label_free(new_sl); | |
2082 | ||
2083 | (void) strlcpy(propbuf, ascii, proplen); | |
2084 | free(ascii); | |
d2c15e84 BB |
2085 | #else |
2086 | (void) strlcpy(propbuf, | |
2087 | getprop_string(zhp, prop, &source), proplen); | |
2088 | #endif /* HAVE_MLSLABEL */ | |
428870ff BB |
2089 | } |
2090 | break; | |
2091 | ||
34dc7c2f BB |
2092 | default: |
2093 | switch (zfs_prop_get_type(prop)) { | |
2094 | case PROP_TYPE_NUMBER: | |
2095 | if (get_numeric_property(zhp, prop, src, | |
2096 | &source, &val) != 0) | |
2097 | return (-1); | |
2098 | if (literal) | |
2099 | (void) snprintf(propbuf, proplen, "%llu", | |
2100 | (u_longlong_t)val); | |
2101 | else | |
2102 | zfs_nicenum(val, propbuf, proplen); | |
2103 | break; | |
2104 | ||
2105 | case PROP_TYPE_STRING: | |
2106 | (void) strlcpy(propbuf, | |
2107 | getprop_string(zhp, prop, &source), proplen); | |
2108 | break; | |
2109 | ||
2110 | case PROP_TYPE_INDEX: | |
2111 | if (get_numeric_property(zhp, prop, src, | |
2112 | &source, &val) != 0) | |
2113 | return (-1); | |
2114 | if (zfs_prop_index_to_string(prop, val, &strval) != 0) | |
2115 | return (-1); | |
2116 | (void) strlcpy(propbuf, strval, proplen); | |
2117 | break; | |
2118 | ||
2119 | default: | |
2120 | abort(); | |
2121 | } | |
2122 | } | |
2123 | ||
2124 | get_source(zhp, src, source, statbuf, statlen); | |
2125 | ||
2126 | return (0); | |
2127 | } | |
2128 | ||
2129 | /* | |
2130 | * Utility function to get the given numeric property. Does no validation that | |
2131 | * the given property is the appropriate type; should only be used with | |
2132 | * hard-coded property types. | |
2133 | */ | |
2134 | uint64_t | |
2135 | zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) | |
2136 | { | |
2137 | char *source; | |
2138 | uint64_t val; | |
2139 | ||
2140 | (void) get_numeric_property(zhp, prop, NULL, &source, &val); | |
2141 | ||
2142 | return (val); | |
2143 | } | |
2144 | ||
2145 | int | |
2146 | zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) | |
2147 | { | |
2148 | char buf[64]; | |
2149 | ||
9babb374 | 2150 | (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); |
34dc7c2f BB |
2151 | return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); |
2152 | } | |
2153 | ||
2154 | /* | |
2155 | * Similar to zfs_prop_get(), but returns the value as an integer. | |
2156 | */ | |
2157 | int | |
2158 | zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, | |
2159 | zprop_source_t *src, char *statbuf, size_t statlen) | |
2160 | { | |
2161 | char *source; | |
2162 | ||
2163 | /* | |
2164 | * Check to see if this property applies to our object | |
2165 | */ | |
2166 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { | |
2167 | return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, | |
2168 | dgettext(TEXT_DOMAIN, "cannot get property '%s'"), | |
2169 | zfs_prop_to_name(prop))); | |
2170 | } | |
2171 | ||
2172 | if (src) | |
2173 | *src = ZPROP_SRC_NONE; | |
2174 | ||
2175 | if (get_numeric_property(zhp, prop, src, &source, value) != 0) | |
2176 | return (-1); | |
2177 | ||
2178 | get_source(zhp, src, source, statbuf, statlen); | |
2179 | ||
2180 | return (0); | |
2181 | } | |
2182 | ||
be160928 | 2183 | #ifdef HAVE_IDMAP |
9babb374 BB |
2184 | static int |
2185 | idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, | |
2186 | char **domainp, idmap_rid_t *ridp) | |
2187 | { | |
9babb374 BB |
2188 | idmap_get_handle_t *get_hdl = NULL; |
2189 | idmap_stat status; | |
2190 | int err = EINVAL; | |
2191 | ||
572e2857 | 2192 | if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) |
9babb374 BB |
2193 | goto out; |
2194 | ||
2195 | if (isuser) { | |
2196 | err = idmap_get_sidbyuid(get_hdl, id, | |
2197 | IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); | |
2198 | } else { | |
2199 | err = idmap_get_sidbygid(get_hdl, id, | |
2200 | IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); | |
2201 | } | |
2202 | if (err == IDMAP_SUCCESS && | |
2203 | idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && | |
2204 | status == IDMAP_SUCCESS) | |
2205 | err = 0; | |
2206 | else | |
2207 | err = EINVAL; | |
2208 | out: | |
2209 | if (get_hdl) | |
2210 | idmap_get_destroy(get_hdl); | |
9babb374 BB |
2211 | return (err); |
2212 | } | |
be160928 | 2213 | #endif /* HAVE_IDMAP */ |
9babb374 BB |
2214 | |
2215 | /* | |
2216 | * convert the propname into parameters needed by kernel | |
2217 | * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 | |
2218 | * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 | |
2219 | */ | |
2220 | static int | |
2221 | userquota_propname_decode(const char *propname, boolean_t zoned, | |
2222 | zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) | |
2223 | { | |
2224 | zfs_userquota_prop_t type; | |
2225 | char *cp, *end; | |
45d1cae3 | 2226 | char *numericsid = NULL; |
9babb374 BB |
2227 | boolean_t isuser; |
2228 | ||
2229 | domain[0] = '\0'; | |
2230 | ||
2231 | /* Figure out the property type ({user|group}{quota|space}) */ | |
2232 | for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { | |
2233 | if (strncmp(propname, zfs_userquota_prop_prefixes[type], | |
2234 | strlen(zfs_userquota_prop_prefixes[type])) == 0) | |
2235 | break; | |
2236 | } | |
2237 | if (type == ZFS_NUM_USERQUOTA_PROPS) | |
2238 | return (EINVAL); | |
2239 | *typep = type; | |
2240 | ||
2241 | isuser = (type == ZFS_PROP_USERQUOTA || | |
2242 | type == ZFS_PROP_USERUSED); | |
2243 | ||
2244 | cp = strchr(propname, '@') + 1; | |
2245 | ||
2246 | if (strchr(cp, '@')) { | |
be160928 | 2247 | #ifdef HAVE_IDMAP |
9babb374 BB |
2248 | /* |
2249 | * It's a SID name (eg "user@domain") that needs to be | |
45d1cae3 | 2250 | * turned into S-1-domainID-RID. |
9babb374 | 2251 | */ |
45d1cae3 | 2252 | directory_error_t e; |
9babb374 BB |
2253 | if (zoned && getzoneid() == GLOBAL_ZONEID) |
2254 | return (ENOENT); | |
45d1cae3 BB |
2255 | if (isuser) { |
2256 | e = directory_sid_from_user_name(NULL, | |
2257 | cp, &numericsid); | |
2258 | } else { | |
2259 | e = directory_sid_from_group_name(NULL, | |
2260 | cp, &numericsid); | |
2261 | } | |
2262 | if (e != NULL) { | |
2263 | directory_error_free(e); | |
9babb374 | 2264 | return (ENOENT); |
45d1cae3 BB |
2265 | } |
2266 | if (numericsid == NULL) | |
9babb374 | 2267 | return (ENOENT); |
45d1cae3 BB |
2268 | cp = numericsid; |
2269 | /* will be further decoded below */ | |
be160928 BB |
2270 | #else |
2271 | return (ENOSYS); | |
2272 | #endif /* HAVE_IDMAP */ | |
45d1cae3 BB |
2273 | } |
2274 | ||
2275 | if (strncmp(cp, "S-1-", 4) == 0) { | |
9babb374 | 2276 | /* It's a numeric SID (eg "S-1-234-567-89") */ |
45d1cae3 | 2277 | (void) strlcpy(domain, cp, domainlen); |
9babb374 BB |
2278 | cp = strrchr(domain, '-'); |
2279 | *cp = '\0'; | |
2280 | cp++; | |
2281 | ||
2282 | errno = 0; | |
2283 | *ridp = strtoull(cp, &end, 10); | |
45d1cae3 BB |
2284 | if (numericsid) { |
2285 | free(numericsid); | |
2286 | numericsid = NULL; | |
2287 | } | |
9babb374 BB |
2288 | if (errno != 0 || *end != '\0') |
2289 | return (EINVAL); | |
2290 | } else if (!isdigit(*cp)) { | |
2291 | /* | |
2292 | * It's a user/group name (eg "user") that needs to be | |
2293 | * turned into a uid/gid | |
2294 | */ | |
2295 | if (zoned && getzoneid() == GLOBAL_ZONEID) | |
2296 | return (ENOENT); | |
2297 | if (isuser) { | |
2298 | struct passwd *pw; | |
2299 | pw = getpwnam(cp); | |
2300 | if (pw == NULL) | |
2301 | return (ENOENT); | |
2302 | *ridp = pw->pw_uid; | |
2303 | } else { | |
2304 | struct group *gr; | |
2305 | gr = getgrnam(cp); | |
2306 | if (gr == NULL) | |
2307 | return (ENOENT); | |
2308 | *ridp = gr->gr_gid; | |
2309 | } | |
2310 | } else { | |
be160928 | 2311 | #ifdef HAVE_IDMAP |
9babb374 BB |
2312 | /* It's a user/group ID (eg "12345"). */ |
2313 | uid_t id = strtoul(cp, &end, 10); | |
2314 | idmap_rid_t rid; | |
2315 | char *mapdomain; | |
2316 | ||
2317 | if (*end != '\0') | |
2318 | return (EINVAL); | |
2319 | if (id > MAXUID) { | |
2320 | /* It's an ephemeral ID. */ | |
2321 | if (idmap_id_to_numeric_domain_rid(id, isuser, | |
2322 | &mapdomain, &rid) != 0) | |
2323 | return (ENOENT); | |
45d1cae3 | 2324 | (void) strlcpy(domain, mapdomain, domainlen); |
9babb374 BB |
2325 | *ridp = rid; |
2326 | } else { | |
2327 | *ridp = id; | |
2328 | } | |
be160928 BB |
2329 | #else |
2330 | return (ENOSYS); | |
2331 | #endif /* HAVE_IDMAP */ | |
9babb374 BB |
2332 | } |
2333 | ||
45d1cae3 | 2334 | ASSERT3P(numericsid, ==, NULL); |
9babb374 BB |
2335 | return (0); |
2336 | } | |
2337 | ||
2338 | static int | |
2339 | zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, | |
2340 | uint64_t *propvalue, zfs_userquota_prop_t *typep) | |
2341 | { | |
2342 | int err; | |
2598c001 | 2343 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
9babb374 BB |
2344 | |
2345 | (void) strncpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
2346 | ||
2347 | err = userquota_propname_decode(propname, | |
2348 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED), | |
2349 | typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); | |
2350 | zc.zc_objset_type = *typep; | |
2351 | if (err) | |
2352 | return (err); | |
2353 | ||
2354 | err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); | |
2355 | if (err) | |
2356 | return (err); | |
2357 | ||
2358 | *propvalue = zc.zc_cookie; | |
2359 | return (0); | |
2360 | } | |
2361 | ||
2362 | int | |
2363 | zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, | |
2364 | uint64_t *propvalue) | |
2365 | { | |
2366 | zfs_userquota_prop_t type; | |
2367 | ||
2368 | return (zfs_prop_get_userquota_common(zhp, propname, propvalue, | |
2369 | &type)); | |
2370 | } | |
2371 | ||
2372 | int | |
2373 | zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, | |
2374 | char *propbuf, int proplen, boolean_t literal) | |
2375 | { | |
2376 | int err; | |
2377 | uint64_t propvalue; | |
2378 | zfs_userquota_prop_t type; | |
2379 | ||
2380 | err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, | |
2381 | &type); | |
2382 | ||
2383 | if (err) | |
2384 | return (err); | |
2385 | ||
2386 | if (literal) { | |
b8864a23 BB |
2387 | (void) snprintf(propbuf, proplen, "%llu", |
2388 | (u_longlong_t)propvalue); | |
9babb374 BB |
2389 | } else if (propvalue == 0 && |
2390 | (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { | |
2391 | (void) strlcpy(propbuf, "none", proplen); | |
2392 | } else { | |
2393 | zfs_nicenum(propvalue, propbuf, proplen); | |
2394 | } | |
2395 | return (0); | |
2396 | } | |
2397 | ||
34dc7c2f BB |
2398 | /* |
2399 | * Returns the name of the given zfs handle. | |
2400 | */ | |
2401 | const char * | |
2402 | zfs_get_name(const zfs_handle_t *zhp) | |
2403 | { | |
2404 | return (zhp->zfs_name); | |
2405 | } | |
2406 | ||
2407 | /* | |
2408 | * Returns the type of the given zfs handle. | |
2409 | */ | |
2410 | zfs_type_t | |
2411 | zfs_get_type(const zfs_handle_t *zhp) | |
2412 | { | |
2413 | return (zhp->zfs_type); | |
2414 | } | |
2415 | ||
fb5f0bc8 BB |
2416 | static int |
2417 | zfs_do_list_ioctl(zfs_handle_t *zhp, int arg, zfs_cmd_t *zc) | |
2418 | { | |
2419 | int rc; | |
2420 | uint64_t orig_cookie; | |
2421 | ||
2422 | orig_cookie = zc->zc_cookie; | |
2423 | top: | |
2424 | (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); | |
2425 | rc = ioctl(zhp->zfs_hdl->libzfs_fd, arg, zc); | |
2426 | ||
2427 | if (rc == -1) { | |
2428 | switch (errno) { | |
2429 | case ENOMEM: | |
2430 | /* expand nvlist memory and try again */ | |
2431 | if (zcmd_expand_dst_nvlist(zhp->zfs_hdl, zc) != 0) { | |
2432 | zcmd_free_nvlists(zc); | |
2433 | return (-1); | |
2434 | } | |
2435 | zc->zc_cookie = orig_cookie; | |
2436 | goto top; | |
2437 | /* | |
2438 | * An errno value of ESRCH indicates normal completion. | |
2439 | * If ENOENT is returned, then the underlying dataset | |
2440 | * has been removed since we obtained the handle. | |
2441 | */ | |
2442 | case ESRCH: | |
2443 | case ENOENT: | |
2444 | rc = 1; | |
2445 | break; | |
2446 | default: | |
2447 | rc = zfs_standard_error(zhp->zfs_hdl, errno, | |
2448 | dgettext(TEXT_DOMAIN, | |
2449 | "cannot iterate filesystems")); | |
2450 | break; | |
2451 | } | |
2452 | } | |
2453 | return (rc); | |
2454 | } | |
2455 | ||
34dc7c2f BB |
2456 | /* |
2457 | * Iterate over all child filesystems | |
2458 | */ | |
2459 | int | |
2460 | zfs_iter_filesystems(zfs_handle_t *zhp, zfs_iter_f func, void *data) | |
2461 | { | |
2598c001 | 2462 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2463 | zfs_handle_t *nzhp; |
2464 | int ret; | |
2465 | ||
2466 | if (zhp->zfs_type != ZFS_TYPE_FILESYSTEM) | |
2467 | return (0); | |
2468 | ||
fb5f0bc8 BB |
2469 | if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) |
2470 | return (-1); | |
2471 | ||
2472 | while ((ret = zfs_do_list_ioctl(zhp, ZFS_IOC_DATASET_LIST_NEXT, | |
2473 | &zc)) == 0) { | |
34dc7c2f BB |
2474 | /* |
2475 | * Silently ignore errors, as the only plausible explanation is | |
2476 | * that the pool has since been removed. | |
2477 | */ | |
fb5f0bc8 BB |
2478 | if ((nzhp = make_dataset_handle_zc(zhp->zfs_hdl, |
2479 | &zc)) == NULL) { | |
34dc7c2f | 2480 | continue; |
fb5f0bc8 | 2481 | } |
34dc7c2f | 2482 | |
fb5f0bc8 BB |
2483 | if ((ret = func(nzhp, data)) != 0) { |
2484 | zcmd_free_nvlists(&zc); | |
34dc7c2f | 2485 | return (ret); |
fb5f0bc8 | 2486 | } |
34dc7c2f | 2487 | } |
fb5f0bc8 BB |
2488 | zcmd_free_nvlists(&zc); |
2489 | return ((ret < 0) ? ret : 0); | |
34dc7c2f BB |
2490 | } |
2491 | ||
2492 | /* | |
2493 | * Iterate over all snapshots | |
2494 | */ | |
2495 | int | |
2496 | zfs_iter_snapshots(zfs_handle_t *zhp, zfs_iter_f func, void *data) | |
2497 | { | |
2598c001 | 2498 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2499 | zfs_handle_t *nzhp; |
2500 | int ret; | |
2501 | ||
2502 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) | |
2503 | return (0); | |
2504 | ||
fb5f0bc8 BB |
2505 | if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) |
2506 | return (-1); | |
2507 | while ((ret = zfs_do_list_ioctl(zhp, ZFS_IOC_SNAPSHOT_LIST_NEXT, | |
2508 | &zc)) == 0) { | |
34dc7c2f | 2509 | |
fb5f0bc8 BB |
2510 | if ((nzhp = make_dataset_handle_zc(zhp->zfs_hdl, |
2511 | &zc)) == NULL) { | |
34dc7c2f | 2512 | continue; |
fb5f0bc8 | 2513 | } |
34dc7c2f | 2514 | |
fb5f0bc8 BB |
2515 | if ((ret = func(nzhp, data)) != 0) { |
2516 | zcmd_free_nvlists(&zc); | |
34dc7c2f | 2517 | return (ret); |
fb5f0bc8 | 2518 | } |
34dc7c2f | 2519 | } |
fb5f0bc8 BB |
2520 | zcmd_free_nvlists(&zc); |
2521 | return ((ret < 0) ? ret : 0); | |
34dc7c2f BB |
2522 | } |
2523 | ||
2524 | /* | |
2525 | * Iterate over all children, snapshots and filesystems | |
2526 | */ | |
2527 | int | |
2528 | zfs_iter_children(zfs_handle_t *zhp, zfs_iter_f func, void *data) | |
2529 | { | |
2530 | int ret; | |
2531 | ||
2532 | if ((ret = zfs_iter_filesystems(zhp, func, data)) != 0) | |
2533 | return (ret); | |
2534 | ||
2535 | return (zfs_iter_snapshots(zhp, func, data)); | |
2536 | } | |
2537 | ||
428870ff BB |
2538 | /* |
2539 | * Is one dataset name a child dataset of another? | |
2540 | * | |
2541 | * Needs to handle these cases: | |
2542 | * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" | |
2543 | * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" | |
2544 | * Descendant? No. No. No. Yes. | |
2545 | */ | |
2546 | static boolean_t | |
2547 | is_descendant(const char *ds1, const char *ds2) | |
2548 | { | |
2549 | size_t d1len = strlen(ds1); | |
2550 | ||
2551 | /* ds2 can't be a descendant if it's smaller */ | |
2552 | if (strlen(ds2) < d1len) | |
2553 | return (B_FALSE); | |
2554 | ||
2555 | /* otherwise, compare strings and verify that there's a '/' char */ | |
2556 | return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); | |
2557 | } | |
2558 | ||
34dc7c2f BB |
2559 | /* |
2560 | * Given a complete name, return just the portion that refers to the parent. | |
2561 | * Can return NULL if this is a pool. | |
2562 | */ | |
2563 | static int | |
2564 | parent_name(const char *path, char *buf, size_t buflen) | |
2565 | { | |
2566 | char *loc; | |
2567 | ||
2568 | if ((loc = strrchr(path, '/')) == NULL) | |
2569 | return (-1); | |
2570 | ||
2571 | (void) strncpy(buf, path, MIN(buflen, loc - path)); | |
2572 | buf[loc - path] = '\0'; | |
2573 | ||
2574 | return (0); | |
2575 | } | |
2576 | ||
2577 | /* | |
2578 | * If accept_ancestor is false, then check to make sure that the given path has | |
2579 | * a parent, and that it exists. If accept_ancestor is true, then find the | |
2580 | * closest existing ancestor for the given path. In prefixlen return the | |
2581 | * length of already existing prefix of the given path. We also fetch the | |
2582 | * 'zoned' property, which is used to validate property settings when creating | |
2583 | * new datasets. | |
2584 | */ | |
2585 | static int | |
2586 | check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, | |
2587 | boolean_t accept_ancestor, int *prefixlen) | |
2588 | { | |
2598c001 | 2589 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2590 | char parent[ZFS_MAXNAMELEN]; |
2591 | char *slash; | |
2592 | zfs_handle_t *zhp; | |
2593 | char errbuf[1024]; | |
428870ff | 2594 | uint64_t is_zoned; |
34dc7c2f | 2595 | |
fb5f0bc8 BB |
2596 | (void) snprintf(errbuf, sizeof (errbuf), |
2597 | dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); | |
34dc7c2f BB |
2598 | |
2599 | /* get parent, and check to see if this is just a pool */ | |
2600 | if (parent_name(path, parent, sizeof (parent)) != 0) { | |
2601 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2602 | "missing dataset name")); | |
2603 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
2604 | } | |
2605 | ||
2606 | /* check to see if the pool exists */ | |
2607 | if ((slash = strchr(parent, '/')) == NULL) | |
2608 | slash = parent + strlen(parent); | |
2609 | (void) strncpy(zc.zc_name, parent, slash - parent); | |
2610 | zc.zc_name[slash - parent] = '\0'; | |
2611 | if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && | |
2612 | errno == ENOENT) { | |
2613 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2614 | "no such pool '%s'"), zc.zc_name); | |
2615 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2616 | } | |
2617 | ||
2618 | /* check to see if the parent dataset exists */ | |
2619 | while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { | |
2620 | if (errno == ENOENT && accept_ancestor) { | |
2621 | /* | |
2622 | * Go deeper to find an ancestor, give up on top level. | |
2623 | */ | |
2624 | if (parent_name(parent, parent, sizeof (parent)) != 0) { | |
2625 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2626 | "no such pool '%s'"), zc.zc_name); | |
2627 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2628 | } | |
2629 | } else if (errno == ENOENT) { | |
2630 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2631 | "parent does not exist")); | |
2632 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2633 | } else | |
2634 | return (zfs_standard_error(hdl, errno, errbuf)); | |
2635 | } | |
2636 | ||
428870ff BB |
2637 | is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); |
2638 | if (zoned != NULL) | |
2639 | *zoned = is_zoned; | |
2640 | ||
34dc7c2f | 2641 | /* we are in a non-global zone, but parent is in the global zone */ |
428870ff | 2642 | if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { |
34dc7c2f BB |
2643 | (void) zfs_standard_error(hdl, EPERM, errbuf); |
2644 | zfs_close(zhp); | |
2645 | return (-1); | |
2646 | } | |
2647 | ||
2648 | /* make sure parent is a filesystem */ | |
2649 | if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { | |
2650 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2651 | "parent is not a filesystem")); | |
2652 | (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); | |
2653 | zfs_close(zhp); | |
2654 | return (-1); | |
2655 | } | |
2656 | ||
2657 | zfs_close(zhp); | |
2658 | if (prefixlen != NULL) | |
2659 | *prefixlen = strlen(parent); | |
2660 | return (0); | |
2661 | } | |
2662 | ||
2663 | /* | |
2664 | * Finds whether the dataset of the given type(s) exists. | |
2665 | */ | |
2666 | boolean_t | |
2667 | zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) | |
2668 | { | |
2669 | zfs_handle_t *zhp; | |
2670 | ||
2671 | if (!zfs_validate_name(hdl, path, types, B_FALSE)) | |
2672 | return (B_FALSE); | |
2673 | ||
2674 | /* | |
2675 | * Try to get stats for the dataset, which will tell us if it exists. | |
2676 | */ | |
2677 | if ((zhp = make_dataset_handle(hdl, path)) != NULL) { | |
2678 | int ds_type = zhp->zfs_type; | |
2679 | ||
2680 | zfs_close(zhp); | |
2681 | if (types & ds_type) | |
2682 | return (B_TRUE); | |
2683 | } | |
2684 | return (B_FALSE); | |
2685 | } | |
2686 | ||
2687 | /* | |
2688 | * Given a path to 'target', create all the ancestors between | |
2689 | * the prefixlen portion of the path, and the target itself. | |
2690 | * Fail if the initial prefixlen-ancestor does not already exist. | |
2691 | */ | |
2692 | int | |
2693 | create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) | |
2694 | { | |
2695 | zfs_handle_t *h; | |
2696 | char *cp; | |
2697 | const char *opname; | |
2698 | ||
2699 | /* make sure prefix exists */ | |
2700 | cp = target + prefixlen; | |
2701 | if (*cp != '/') { | |
2702 | assert(strchr(cp, '/') == NULL); | |
2703 | h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); | |
2704 | } else { | |
2705 | *cp = '\0'; | |
2706 | h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); | |
2707 | *cp = '/'; | |
2708 | } | |
2709 | if (h == NULL) | |
2710 | return (-1); | |
2711 | zfs_close(h); | |
2712 | ||
2713 | /* | |
2714 | * Attempt to create, mount, and share any ancestor filesystems, | |
2715 | * up to the prefixlen-long one. | |
2716 | */ | |
2717 | for (cp = target + prefixlen + 1; | |
c65aa5b2 | 2718 | (cp = strchr(cp, '/')); *cp = '/', cp++) { |
34dc7c2f BB |
2719 | char *logstr; |
2720 | ||
2721 | *cp = '\0'; | |
2722 | ||
2723 | h = make_dataset_handle(hdl, target); | |
2724 | if (h) { | |
2725 | /* it already exists, nothing to do here */ | |
2726 | zfs_close(h); | |
2727 | continue; | |
2728 | } | |
2729 | ||
2730 | logstr = hdl->libzfs_log_str; | |
2731 | hdl->libzfs_log_str = NULL; | |
2732 | if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, | |
2733 | NULL) != 0) { | |
2734 | hdl->libzfs_log_str = logstr; | |
2735 | opname = dgettext(TEXT_DOMAIN, "create"); | |
2736 | goto ancestorerr; | |
2737 | } | |
2738 | ||
2739 | hdl->libzfs_log_str = logstr; | |
2740 | h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); | |
2741 | if (h == NULL) { | |
2742 | opname = dgettext(TEXT_DOMAIN, "open"); | |
2743 | goto ancestorerr; | |
2744 | } | |
2745 | ||
2746 | if (zfs_mount(h, NULL, 0) != 0) { | |
2747 | opname = dgettext(TEXT_DOMAIN, "mount"); | |
2748 | goto ancestorerr; | |
2749 | } | |
2750 | ||
2751 | if (zfs_share(h) != 0) { | |
2752 | opname = dgettext(TEXT_DOMAIN, "share"); | |
2753 | goto ancestorerr; | |
2754 | } | |
2755 | ||
2756 | zfs_close(h); | |
2757 | } | |
2758 | ||
2759 | return (0); | |
2760 | ||
2761 | ancestorerr: | |
2762 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2763 | "failed to %s ancestor '%s'"), opname, target); | |
2764 | return (-1); | |
2765 | } | |
2766 | ||
2767 | /* | |
2768 | * Creates non-existing ancestors of the given path. | |
2769 | */ | |
2770 | int | |
2771 | zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) | |
2772 | { | |
2773 | int prefix; | |
34dc7c2f | 2774 | char *path_copy; |
d4ed6673 | 2775 | int rc = 0; |
34dc7c2f | 2776 | |
428870ff | 2777 | if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) |
34dc7c2f BB |
2778 | return (-1); |
2779 | ||
2780 | if ((path_copy = strdup(path)) != NULL) { | |
2781 | rc = create_parents(hdl, path_copy, prefix); | |
2782 | free(path_copy); | |
2783 | } | |
2784 | if (path_copy == NULL || rc != 0) | |
2785 | return (-1); | |
2786 | ||
2787 | return (0); | |
2788 | } | |
2789 | ||
2790 | /* | |
2791 | * Create a new filesystem or volume. | |
2792 | */ | |
2793 | int | |
2794 | zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, | |
2795 | nvlist_t *props) | |
2796 | { | |
2598c001 | 2797 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2798 | int ret; |
2799 | uint64_t size = 0; | |
2800 | uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); | |
2801 | char errbuf[1024]; | |
2802 | uint64_t zoned; | |
2803 | ||
2804 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2805 | "cannot create '%s'"), path); | |
2806 | ||
2807 | /* validate the path, taking care to note the extended error message */ | |
2808 | if (!zfs_validate_name(hdl, path, type, B_TRUE)) | |
2809 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
2810 | ||
2811 | /* validate parents exist */ | |
2812 | if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) | |
2813 | return (-1); | |
2814 | ||
2815 | /* | |
2816 | * The failure modes when creating a dataset of a different type over | |
2817 | * one that already exists is a little strange. In particular, if you | |
2818 | * try to create a dataset on top of an existing dataset, the ioctl() | |
2819 | * will return ENOENT, not EEXIST. To prevent this from happening, we | |
2820 | * first try to see if the dataset exists. | |
2821 | */ | |
2822 | (void) strlcpy(zc.zc_name, path, sizeof (zc.zc_name)); | |
2823 | if (zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) { | |
2824 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2825 | "dataset already exists")); | |
2826 | return (zfs_error(hdl, EZFS_EXISTS, errbuf)); | |
2827 | } | |
2828 | ||
2829 | if (type == ZFS_TYPE_VOLUME) | |
2830 | zc.zc_objset_type = DMU_OST_ZVOL; | |
2831 | else | |
2832 | zc.zc_objset_type = DMU_OST_ZFS; | |
2833 | ||
b128c09f | 2834 | if (props && (props = zfs_valid_proplist(hdl, type, props, |
34dc7c2f BB |
2835 | zoned, NULL, errbuf)) == 0) |
2836 | return (-1); | |
2837 | ||
2838 | if (type == ZFS_TYPE_VOLUME) { | |
2839 | /* | |
2840 | * If we are creating a volume, the size and block size must | |
2841 | * satisfy a few restraints. First, the blocksize must be a | |
2842 | * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the | |
2843 | * volsize must be a multiple of the block size, and cannot be | |
2844 | * zero. | |
2845 | */ | |
2846 | if (props == NULL || nvlist_lookup_uint64(props, | |
2847 | zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { | |
2848 | nvlist_free(props); | |
2849 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2850 | "missing volume size")); | |
2851 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
2852 | } | |
2853 | ||
2854 | if ((ret = nvlist_lookup_uint64(props, | |
2855 | zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), | |
2856 | &blocksize)) != 0) { | |
2857 | if (ret == ENOENT) { | |
2858 | blocksize = zfs_prop_default_numeric( | |
2859 | ZFS_PROP_VOLBLOCKSIZE); | |
2860 | } else { | |
2861 | nvlist_free(props); | |
2862 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2863 | "missing volume block size")); | |
2864 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
2865 | } | |
2866 | } | |
2867 | ||
2868 | if (size == 0) { | |
2869 | nvlist_free(props); | |
2870 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2871 | "volume size cannot be zero")); | |
2872 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
2873 | } | |
2874 | ||
2875 | if (size % blocksize != 0) { | |
2876 | nvlist_free(props); | |
2877 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2878 | "volume size must be a multiple of volume block " | |
2879 | "size")); | |
2880 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
2881 | } | |
2882 | } | |
2883 | ||
2884 | if (props && zcmd_write_src_nvlist(hdl, &zc, props) != 0) | |
2885 | return (-1); | |
2886 | nvlist_free(props); | |
2887 | ||
2888 | /* create the dataset */ | |
2889 | ret = zfs_ioctl(hdl, ZFS_IOC_CREATE, &zc); | |
2890 | ||
d603ed6c BB |
2891 | if (ret == 0 && type == ZFS_TYPE_VOLUME) { |
2892 | ret = zvol_create_link(hdl, path); | |
2893 | if (ret) { | |
2894 | (void) zfs_standard_error(hdl, errno, | |
2895 | dgettext(TEXT_DOMAIN, | |
2896 | "Volume successfully created, but device links " | |
2897 | "were not created")); | |
2898 | zcmd_free_nvlists(&zc); | |
2899 | return (-1); | |
2900 | } | |
2901 | } | |
2902 | ||
34dc7c2f BB |
2903 | zcmd_free_nvlists(&zc); |
2904 | ||
2905 | /* check for failure */ | |
2906 | if (ret != 0) { | |
2907 | char parent[ZFS_MAXNAMELEN]; | |
2908 | (void) parent_name(path, parent, sizeof (parent)); | |
2909 | ||
2910 | switch (errno) { | |
2911 | case ENOENT: | |
2912 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2913 | "no such parent '%s'"), parent); | |
2914 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2915 | ||
2916 | case EINVAL: | |
2917 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2918 | "parent '%s' is not a filesystem"), parent); | |
2919 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
2920 | ||
2921 | case EDOM: | |
2922 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2923 | "volume block size must be power of 2 from " | |
2924 | "%u to %uk"), | |
2925 | (uint_t)SPA_MINBLOCKSIZE, | |
2926 | (uint_t)SPA_MAXBLOCKSIZE >> 10); | |
2927 | ||
2928 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
2929 | ||
2930 | case ENOTSUP: | |
2931 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2932 | "pool must be upgraded to set this " | |
2933 | "property or value")); | |
2934 | return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); | |
2935 | #ifdef _ILP32 | |
2936 | case EOVERFLOW: | |
2937 | /* | |
2938 | * This platform can't address a volume this big. | |
2939 | */ | |
2940 | if (type == ZFS_TYPE_VOLUME) | |
2941 | return (zfs_error(hdl, EZFS_VOLTOOBIG, | |
2942 | errbuf)); | |
2943 | #endif | |
2944 | /* FALLTHROUGH */ | |
2945 | default: | |
2946 | return (zfs_standard_error(hdl, errno, errbuf)); | |
2947 | } | |
2948 | } | |
2949 | ||
2950 | return (0); | |
2951 | } | |
2952 | ||
2953 | /* | |
2954 | * Destroys the given dataset. The caller must make sure that the filesystem | |
2955 | * isn't mounted, and that there are no active dependents. | |
2956 | */ | |
2957 | int | |
45d1cae3 | 2958 | zfs_destroy(zfs_handle_t *zhp, boolean_t defer) |
34dc7c2f | 2959 | { |
2598c001 | 2960 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2961 | |
2962 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
2963 | ||
2964 | if (ZFS_IS_VOLUME(zhp)) { | |
d603ed6c BB |
2965 | if (zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0) |
2966 | return (-1); | |
2967 | ||
34dc7c2f BB |
2968 | zc.zc_objset_type = DMU_OST_ZVOL; |
2969 | } else { | |
2970 | zc.zc_objset_type = DMU_OST_ZFS; | |
2971 | } | |
2972 | ||
45d1cae3 | 2973 | zc.zc_defer_destroy = defer; |
34dc7c2f BB |
2974 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0) { |
2975 | return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, | |
2976 | dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), | |
2977 | zhp->zfs_name)); | |
2978 | } | |
2979 | ||
2980 | remove_mountpoint(zhp); | |
2981 | ||
2982 | return (0); | |
2983 | } | |
2984 | ||
2985 | struct destroydata { | |
2986 | char *snapname; | |
2987 | boolean_t gotone; | |
2988 | boolean_t closezhp; | |
2989 | }; | |
2990 | ||
2991 | static int | |
428870ff | 2992 | zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) |
34dc7c2f BB |
2993 | { |
2994 | struct destroydata *dd = arg; | |
2995 | zfs_handle_t *szhp; | |
2996 | char name[ZFS_MAXNAMELEN]; | |
2997 | boolean_t closezhp = dd->closezhp; | |
428870ff | 2998 | int rv = 0; |
34dc7c2f BB |
2999 | |
3000 | (void) strlcpy(name, zhp->zfs_name, sizeof (name)); | |
3001 | (void) strlcat(name, "@", sizeof (name)); | |
3002 | (void) strlcat(name, dd->snapname, sizeof (name)); | |
3003 | ||
3004 | szhp = make_dataset_handle(zhp->zfs_hdl, name); | |
3005 | if (szhp) { | |
3006 | dd->gotone = B_TRUE; | |
3007 | zfs_close(szhp); | |
3008 | } | |
3009 | ||
d603ed6c BB |
3010 | if (zhp->zfs_type == ZFS_TYPE_VOLUME) { |
3011 | (void) zvol_remove_link(zhp->zfs_hdl, name); | |
3012 | /* | |
3013 | * NB: this is simply a best-effort. We don't want to | |
3014 | * return an error, because then we wouldn't visit all | |
3015 | * the volumes. | |
3016 | */ | |
3017 | } | |
3018 | ||
34dc7c2f | 3019 | dd->closezhp = B_TRUE; |
d603ed6c | 3020 | rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, arg); |
34dc7c2f BB |
3021 | if (closezhp) |
3022 | zfs_close(zhp); | |
3023 | return (rv); | |
3024 | } | |
3025 | ||
3026 | /* | |
3027 | * Destroys all snapshots with the given name in zhp & descendants. | |
3028 | */ | |
3029 | int | |
45d1cae3 | 3030 | zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) |
34dc7c2f | 3031 | { |
2598c001 | 3032 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3033 | int ret; |
3034 | struct destroydata dd = { 0 }; | |
3035 | ||
3036 | dd.snapname = snapname; | |
428870ff | 3037 | (void) zfs_check_snap_cb(zhp, &dd); |
34dc7c2f BB |
3038 | |
3039 | if (!dd.gotone) { | |
3040 | return (zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, | |
3041 | dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), | |
3042 | zhp->zfs_name, snapname)); | |
3043 | } | |
3044 | ||
3045 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3046 | (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); | |
45d1cae3 | 3047 | zc.zc_defer_destroy = defer; |
34dc7c2f BB |
3048 | |
3049 | ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY_SNAPS, &zc); | |
3050 | if (ret != 0) { | |
3051 | char errbuf[1024]; | |
3052 | ||
3053 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3054 | "cannot destroy '%s@%s'"), zc.zc_name, snapname); | |
3055 | ||
3056 | switch (errno) { | |
3057 | case EEXIST: | |
3058 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3059 | "snapshot is cloned")); | |
3060 | return (zfs_error(zhp->zfs_hdl, EZFS_EXISTS, errbuf)); | |
3061 | ||
3062 | default: | |
3063 | return (zfs_standard_error(zhp->zfs_hdl, errno, | |
3064 | errbuf)); | |
3065 | } | |
3066 | } | |
3067 | ||
3068 | return (0); | |
3069 | } | |
3070 | ||
3071 | /* | |
3072 | * Clones the given dataset. The target must be of the same type as the source. | |
3073 | */ | |
3074 | int | |
3075 | zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) | |
3076 | { | |
2598c001 | 3077 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3078 | char parent[ZFS_MAXNAMELEN]; |
3079 | int ret; | |
3080 | char errbuf[1024]; | |
3081 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
3082 | zfs_type_t type; | |
3083 | uint64_t zoned; | |
3084 | ||
3085 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
3086 | ||
3087 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3088 | "cannot create '%s'"), target); | |
3089 | ||
3090 | /* validate the target name */ | |
3091 | if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) | |
3092 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3093 | ||
3094 | /* validate parents exist */ | |
3095 | if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) | |
3096 | return (-1); | |
3097 | ||
3098 | (void) parent_name(target, parent, sizeof (parent)); | |
3099 | ||
3100 | /* do the clone */ | |
3101 | if (ZFS_IS_VOLUME(zhp)) { | |
3102 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3103 | type = ZFS_TYPE_VOLUME; | |
3104 | } else { | |
3105 | zc.zc_objset_type = DMU_OST_ZFS; | |
3106 | type = ZFS_TYPE_FILESYSTEM; | |
3107 | } | |
3108 | ||
3109 | if (props) { | |
b128c09f BB |
3110 | if ((props = zfs_valid_proplist(hdl, type, props, zoned, |
3111 | zhp, errbuf)) == NULL) | |
34dc7c2f BB |
3112 | return (-1); |
3113 | ||
3114 | if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { | |
3115 | nvlist_free(props); | |
3116 | return (-1); | |
3117 | } | |
3118 | ||
3119 | nvlist_free(props); | |
3120 | } | |
3121 | ||
3122 | (void) strlcpy(zc.zc_name, target, sizeof (zc.zc_name)); | |
3123 | (void) strlcpy(zc.zc_value, zhp->zfs_name, sizeof (zc.zc_value)); | |
3124 | ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_CREATE, &zc); | |
3125 | ||
3126 | zcmd_free_nvlists(&zc); | |
3127 | ||
3128 | if (ret != 0) { | |
3129 | switch (errno) { | |
3130 | ||
3131 | case ENOENT: | |
3132 | /* | |
3133 | * The parent doesn't exist. We should have caught this | |
3134 | * above, but there may a race condition that has since | |
3135 | * destroyed the parent. | |
3136 | * | |
3137 | * At this point, we don't know whether it's the source | |
3138 | * that doesn't exist anymore, or whether the target | |
3139 | * dataset doesn't exist. | |
3140 | */ | |
3141 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3142 | "no such parent '%s'"), parent); | |
3143 | return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); | |
3144 | ||
3145 | case EXDEV: | |
3146 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3147 | "source and target pools differ")); | |
3148 | return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, | |
3149 | errbuf)); | |
3150 | ||
3151 | default: | |
3152 | return (zfs_standard_error(zhp->zfs_hdl, errno, | |
3153 | errbuf)); | |
3154 | } | |
d603ed6c BB |
3155 | } else if (ZFS_IS_VOLUME(zhp)) { |
3156 | ret = zvol_create_link(zhp->zfs_hdl, target); | |
34dc7c2f BB |
3157 | } |
3158 | ||
3159 | return (ret); | |
3160 | } | |
3161 | ||
d603ed6c BB |
3162 | typedef struct promote_data { |
3163 | char cb_mountpoint[MAXPATHLEN]; | |
3164 | const char *cb_target; | |
3165 | const char *cb_errbuf; | |
3166 | uint64_t cb_pivot_txg; | |
3167 | } promote_data_t; | |
3168 | ||
3169 | static int | |
3170 | promote_snap_cb(zfs_handle_t *zhp, void *data) | |
3171 | { | |
3172 | promote_data_t *pd = data; | |
3173 | zfs_handle_t *szhp; | |
3174 | char snapname[MAXPATHLEN]; | |
3175 | int rv = 0; | |
3176 | ||
3177 | /* We don't care about snapshots after the pivot point */ | |
3178 | if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > pd->cb_pivot_txg) { | |
3179 | zfs_close(zhp); | |
3180 | return (0); | |
3181 | } | |
3182 | ||
3183 | /* Remove the device link if it's a zvol. */ | |
3184 | if (ZFS_IS_VOLUME(zhp)) | |
3185 | (void) zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name); | |
3186 | ||
3187 | /* Check for conflicting names */ | |
3188 | (void) strlcpy(snapname, pd->cb_target, sizeof (snapname)); | |
3189 | (void) strlcat(snapname, strchr(zhp->zfs_name, '@'), sizeof (snapname)); | |
3190 | szhp = make_dataset_handle(zhp->zfs_hdl, snapname); | |
3191 | if (szhp != NULL) { | |
3192 | zfs_close(szhp); | |
3193 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3194 | "snapshot name '%s' from origin \n" | |
3195 | "conflicts with '%s' from target"), | |
3196 | zhp->zfs_name, snapname); | |
3197 | rv = zfs_error(zhp->zfs_hdl, EZFS_EXISTS, pd->cb_errbuf); | |
3198 | } | |
3199 | zfs_close(zhp); | |
3200 | return (rv); | |
3201 | } | |
3202 | ||
3203 | static int | |
3204 | promote_snap_done_cb(zfs_handle_t *zhp, void *data) | |
3205 | { | |
3206 | promote_data_t *pd = data; | |
3207 | ||
3208 | /* We don't care about snapshots after the pivot point */ | |
3209 | if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) <= pd->cb_pivot_txg) { | |
3210 | /* Create the device link if it's a zvol. */ | |
3211 | if (ZFS_IS_VOLUME(zhp)) | |
3212 | (void) zvol_create_link(zhp->zfs_hdl, zhp->zfs_name); | |
3213 | } | |
3214 | ||
3215 | zfs_close(zhp); | |
3216 | return (0); | |
3217 | } | |
3218 | ||
34dc7c2f BB |
3219 | /* |
3220 | * Promotes the given clone fs to be the clone parent. | |
3221 | */ | |
3222 | int | |
3223 | zfs_promote(zfs_handle_t *zhp) | |
3224 | { | |
3225 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
2598c001 | 3226 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f | 3227 | char parent[MAXPATHLEN]; |
d603ed6c | 3228 | char *cp; |
34dc7c2f | 3229 | int ret; |
d603ed6c BB |
3230 | zfs_handle_t *pzhp; |
3231 | promote_data_t pd; | |
34dc7c2f BB |
3232 | char errbuf[1024]; |
3233 | ||
3234 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3235 | "cannot promote '%s'"), zhp->zfs_name); | |
3236 | ||
3237 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { | |
3238 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3239 | "snapshots can not be promoted")); | |
3240 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3241 | } | |
3242 | ||
3243 | (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); | |
3244 | if (parent[0] == '\0') { | |
3245 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3246 | "not a cloned filesystem")); | |
3247 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3248 | } | |
d603ed6c BB |
3249 | cp = strchr(parent, '@'); |
3250 | *cp = '\0'; | |
3251 | ||
3252 | /* Walk the snapshots we will be moving */ | |
3253 | pzhp = zfs_open(hdl, zhp->zfs_dmustats.dds_origin, ZFS_TYPE_SNAPSHOT); | |
3254 | if (pzhp == NULL) | |
3255 | return (-1); | |
3256 | pd.cb_pivot_txg = zfs_prop_get_int(pzhp, ZFS_PROP_CREATETXG); | |
3257 | zfs_close(pzhp); | |
3258 | pd.cb_target = zhp->zfs_name; | |
3259 | pd.cb_errbuf = errbuf; | |
3260 | pzhp = zfs_open(hdl, parent, ZFS_TYPE_DATASET); | |
3261 | if (pzhp == NULL) | |
3262 | return (-1); | |
3263 | (void) zfs_prop_get(pzhp, ZFS_PROP_MOUNTPOINT, pd.cb_mountpoint, | |
3264 | sizeof (pd.cb_mountpoint), NULL, NULL, 0, FALSE); | |
3265 | ret = zfs_iter_snapshots(pzhp, promote_snap_cb, &pd); | |
3266 | if (ret != 0) { | |
3267 | zfs_close(pzhp); | |
3268 | return (-1); | |
3269 | } | |
34dc7c2f | 3270 | |
d603ed6c | 3271 | /* issue the ioctl */ |
34dc7c2f BB |
3272 | (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, |
3273 | sizeof (zc.zc_value)); | |
3274 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3275 | ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); | |
3276 | ||
3277 | if (ret != 0) { | |
3278 | int save_errno = errno; | |
3279 | ||
d603ed6c BB |
3280 | (void) zfs_iter_snapshots(pzhp, promote_snap_done_cb, &pd); |
3281 | zfs_close(pzhp); | |
3282 | ||
34dc7c2f BB |
3283 | switch (save_errno) { |
3284 | case EEXIST: | |
d603ed6c BB |
3285 | /* |
3286 | * There is a conflicting snapshot name. We | |
3287 | * should have caught this above, but they could | |
3288 | * have renamed something in the mean time. | |
3289 | */ | |
34dc7c2f | 3290 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
428870ff BB |
3291 | "conflicting snapshot '%s' from parent '%s'"), |
3292 | zc.zc_string, parent); | |
34dc7c2f BB |
3293 | return (zfs_error(hdl, EZFS_EXISTS, errbuf)); |
3294 | ||
3295 | default: | |
3296 | return (zfs_standard_error(hdl, save_errno, errbuf)); | |
3297 | } | |
d603ed6c BB |
3298 | } else { |
3299 | (void) zfs_iter_snapshots(zhp, promote_snap_done_cb, &pd); | |
34dc7c2f | 3300 | } |
d603ed6c BB |
3301 | |
3302 | zfs_close(pzhp); | |
3303 | return (ret); | |
3304 | } | |
3305 | ||
3306 | struct createdata { | |
3307 | const char *cd_snapname; | |
3308 | int cd_ifexists; | |
3309 | }; | |
3310 | ||
3311 | static int | |
3312 | zfs_create_link_cb(zfs_handle_t *zhp, void *arg) | |
3313 | { | |
3314 | struct createdata *cd = arg; | |
3315 | int ret; | |
3316 | ||
3317 | if (zhp->zfs_type == ZFS_TYPE_VOLUME) { | |
3318 | char name[MAXPATHLEN]; | |
3319 | ||
3320 | (void) strlcpy(name, zhp->zfs_name, sizeof (name)); | |
3321 | (void) strlcat(name, "@", sizeof (name)); | |
3322 | (void) strlcat(name, cd->cd_snapname, sizeof (name)); | |
3323 | (void) zvol_create_link_common(zhp->zfs_hdl, name, | |
3324 | cd->cd_ifexists); | |
3325 | /* | |
3326 | * NB: this is simply a best-effort. We don't want to | |
3327 | * return an error, because then we wouldn't visit all | |
3328 | * the volumes. | |
3329 | */ | |
3330 | } | |
3331 | ||
3332 | ret = zfs_iter_filesystems(zhp, zfs_create_link_cb, cd); | |
3333 | ||
3334 | zfs_close(zhp); | |
3335 | ||
34dc7c2f BB |
3336 | return (ret); |
3337 | } | |
3338 | ||
3339 | /* | |
3340 | * Takes a snapshot of the given dataset. | |
3341 | */ | |
3342 | int | |
b128c09f BB |
3343 | zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, |
3344 | nvlist_t *props) | |
34dc7c2f BB |
3345 | { |
3346 | const char *delim; | |
b128c09f | 3347 | char parent[ZFS_MAXNAMELEN]; |
34dc7c2f | 3348 | zfs_handle_t *zhp; |
2598c001 | 3349 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3350 | int ret; |
3351 | char errbuf[1024]; | |
3352 | ||
3353 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3354 | "cannot snapshot '%s'"), path); | |
3355 | ||
3356 | /* validate the target name */ | |
3357 | if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) | |
3358 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3359 | ||
b128c09f BB |
3360 | if (props) { |
3361 | if ((props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, | |
3362 | props, B_FALSE, NULL, errbuf)) == NULL) | |
3363 | return (-1); | |
3364 | ||
3365 | if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { | |
3366 | nvlist_free(props); | |
3367 | return (-1); | |
3368 | } | |
3369 | ||
3370 | nvlist_free(props); | |
3371 | } | |
3372 | ||
34dc7c2f BB |
3373 | /* make sure the parent exists and is of the appropriate type */ |
3374 | delim = strchr(path, '@'); | |
34dc7c2f BB |
3375 | (void) strncpy(parent, path, delim - path); |
3376 | parent[delim - path] = '\0'; | |
3377 | ||
3378 | if ((zhp = zfs_open(hdl, parent, ZFS_TYPE_FILESYSTEM | | |
3379 | ZFS_TYPE_VOLUME)) == NULL) { | |
b128c09f | 3380 | zcmd_free_nvlists(&zc); |
34dc7c2f BB |
3381 | return (-1); |
3382 | } | |
3383 | ||
3384 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3385 | (void) strlcpy(zc.zc_value, delim+1, sizeof (zc.zc_value)); | |
3386 | if (ZFS_IS_VOLUME(zhp)) | |
3387 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3388 | else | |
3389 | zc.zc_objset_type = DMU_OST_ZFS; | |
3390 | zc.zc_cookie = recursive; | |
3391 | ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SNAPSHOT, &zc); | |
3392 | ||
b128c09f BB |
3393 | zcmd_free_nvlists(&zc); |
3394 | ||
34dc7c2f BB |
3395 | /* |
3396 | * if it was recursive, the one that actually failed will be in | |
3397 | * zc.zc_name. | |
3398 | */ | |
d603ed6c | 3399 | if (ret != 0) |
34dc7c2f BB |
3400 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
3401 | "cannot create snapshot '%s@%s'"), zc.zc_name, zc.zc_value); | |
d603ed6c BB |
3402 | |
3403 | if (ret == 0 && recursive) { | |
3404 | struct createdata cd; | |
3405 | ||
3406 | cd.cd_snapname = delim + 1; | |
3407 | cd.cd_ifexists = B_FALSE; | |
3408 | (void) zfs_iter_filesystems(zhp, zfs_create_link_cb, &cd); | |
3409 | } | |
3410 | if (ret == 0 && zhp->zfs_type == ZFS_TYPE_VOLUME) { | |
3411 | ret = zvol_create_link(zhp->zfs_hdl, path); | |
3412 | if (ret != 0) { | |
3413 | (void) zfs_standard_error(hdl, errno, | |
3414 | dgettext(TEXT_DOMAIN, | |
3415 | "Volume successfully snapshotted, but device links " | |
3416 | "were not created")); | |
3417 | zfs_close(zhp); | |
3418 | return (-1); | |
3419 | } | |
428870ff | 3420 | } |
34dc7c2f | 3421 | |
d603ed6c BB |
3422 | if (ret != 0) |
3423 | (void) zfs_standard_error(hdl, errno, errbuf); | |
3424 | ||
34dc7c2f BB |
3425 | zfs_close(zhp); |
3426 | ||
3427 | return (ret); | |
3428 | } | |
3429 | ||
3430 | /* | |
3431 | * Destroy any more recent snapshots. We invoke this callback on any dependents | |
3432 | * of the snapshot first. If the 'cb_dependent' member is non-zero, then this | |
3433 | * is a dependent and we should just destroy it without checking the transaction | |
3434 | * group. | |
3435 | */ | |
3436 | typedef struct rollback_data { | |
3437 | const char *cb_target; /* the snapshot */ | |
3438 | uint64_t cb_create; /* creation time reference */ | |
3439 | boolean_t cb_error; | |
3440 | boolean_t cb_dependent; | |
3441 | boolean_t cb_force; | |
3442 | } rollback_data_t; | |
3443 | ||
3444 | static int | |
3445 | rollback_destroy(zfs_handle_t *zhp, void *data) | |
3446 | { | |
3447 | rollback_data_t *cbp = data; | |
3448 | ||
3449 | if (!cbp->cb_dependent) { | |
3450 | if (strcmp(zhp->zfs_name, cbp->cb_target) != 0 && | |
3451 | zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && | |
3452 | zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > | |
3453 | cbp->cb_create) { | |
3454 | char *logstr; | |
3455 | ||
3456 | cbp->cb_dependent = B_TRUE; | |
3457 | cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, | |
3458 | rollback_destroy, cbp); | |
3459 | cbp->cb_dependent = B_FALSE; | |
3460 | ||
3461 | logstr = zhp->zfs_hdl->libzfs_log_str; | |
3462 | zhp->zfs_hdl->libzfs_log_str = NULL; | |
45d1cae3 | 3463 | cbp->cb_error |= zfs_destroy(zhp, B_FALSE); |
34dc7c2f BB |
3464 | zhp->zfs_hdl->libzfs_log_str = logstr; |
3465 | } | |
3466 | } else { | |
3467 | /* We must destroy this clone; first unmount it */ | |
3468 | prop_changelist_t *clp; | |
3469 | ||
b128c09f | 3470 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
34dc7c2f BB |
3471 | cbp->cb_force ? MS_FORCE: 0); |
3472 | if (clp == NULL || changelist_prefix(clp) != 0) { | |
3473 | cbp->cb_error = B_TRUE; | |
3474 | zfs_close(zhp); | |
3475 | return (0); | |
3476 | } | |
45d1cae3 | 3477 | if (zfs_destroy(zhp, B_FALSE) != 0) |
34dc7c2f BB |
3478 | cbp->cb_error = B_TRUE; |
3479 | else | |
3480 | changelist_remove(clp, zhp->zfs_name); | |
3481 | (void) changelist_postfix(clp); | |
3482 | changelist_free(clp); | |
3483 | } | |
3484 | ||
3485 | zfs_close(zhp); | |
3486 | return (0); | |
3487 | } | |
3488 | ||
3489 | /* | |
3490 | * Given a dataset, rollback to a specific snapshot, discarding any | |
3491 | * data changes since then and making it the active dataset. | |
3492 | * | |
3493 | * Any snapshots more recent than the target are destroyed, along with | |
3494 | * their dependents. | |
3495 | */ | |
3496 | int | |
3497 | zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) | |
3498 | { | |
3499 | rollback_data_t cb = { 0 }; | |
3500 | int err; | |
2598c001 | 3501 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f | 3502 | boolean_t restore_resv = 0; |
d4ed6673 BB |
3503 | uint64_t old_volsize = 0, new_volsize; |
3504 | zfs_prop_t resv_prop = { 0 }; | |
34dc7c2f BB |
3505 | |
3506 | assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || | |
3507 | zhp->zfs_type == ZFS_TYPE_VOLUME); | |
3508 | ||
3509 | /* | |
3510 | * Destroy all recent snapshots and its dependends. | |
3511 | */ | |
3512 | cb.cb_force = force; | |
3513 | cb.cb_target = snap->zfs_name; | |
3514 | cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); | |
3515 | (void) zfs_iter_children(zhp, rollback_destroy, &cb); | |
3516 | ||
3517 | if (cb.cb_error) | |
3518 | return (-1); | |
3519 | ||
3520 | /* | |
3521 | * Now that we have verified that the snapshot is the latest, | |
3522 | * rollback to the given snapshot. | |
3523 | */ | |
3524 | ||
3525 | if (zhp->zfs_type == ZFS_TYPE_VOLUME) { | |
d603ed6c BB |
3526 | if (zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0) |
3527 | return (-1); | |
34dc7c2f BB |
3528 | if (zfs_which_resv_prop(zhp, &resv_prop) < 0) |
3529 | return (-1); | |
3530 | old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); | |
3531 | restore_resv = | |
3532 | (old_volsize == zfs_prop_get_int(zhp, resv_prop)); | |
3533 | } | |
3534 | ||
3535 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3536 | ||
3537 | if (ZFS_IS_VOLUME(zhp)) | |
3538 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3539 | else | |
3540 | zc.zc_objset_type = DMU_OST_ZFS; | |
3541 | ||
3542 | /* | |
3543 | * We rely on zfs_iter_children() to verify that there are no | |
3544 | * newer snapshots for the given dataset. Therefore, we can | |
3545 | * simply pass the name on to the ioctl() call. There is still | |
3546 | * an unlikely race condition where the user has taken a | |
3547 | * snapshot since we verified that this was the most recent. | |
3548 | * | |
3549 | */ | |
3550 | if ((err = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_ROLLBACK, &zc)) != 0) { | |
3551 | (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, | |
3552 | dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), | |
3553 | zhp->zfs_name); | |
3554 | return (err); | |
3555 | } | |
3556 | ||
3557 | /* | |
3558 | * For volumes, if the pre-rollback volsize matched the pre- | |
3559 | * rollback reservation and the volsize has changed then set | |
3560 | * the reservation property to the post-rollback volsize. | |
3561 | * Make a new handle since the rollback closed the dataset. | |
3562 | */ | |
3563 | if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && | |
3564 | (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { | |
d603ed6c BB |
3565 | if ((err = zvol_create_link(zhp->zfs_hdl, zhp->zfs_name))) { |
3566 | zfs_close(zhp); | |
3567 | return (err); | |
3568 | } | |
34dc7c2f BB |
3569 | if (restore_resv) { |
3570 | new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); | |
3571 | if (old_volsize != new_volsize) | |
3572 | err = zfs_prop_set_int(zhp, resv_prop, | |
3573 | new_volsize); | |
3574 | } | |
3575 | zfs_close(zhp); | |
3576 | } | |
3577 | return (err); | |
3578 | } | |
3579 | ||
3580 | /* | |
3581 | * Iterate over all dependents for a given dataset. This includes both | |
3582 | * hierarchical dependents (children) and data dependents (snapshots and | |
3583 | * clones). The bulk of the processing occurs in get_dependents() in | |
3584 | * libzfs_graph.c. | |
3585 | */ | |
3586 | int | |
3587 | zfs_iter_dependents(zfs_handle_t *zhp, boolean_t allowrecursion, | |
3588 | zfs_iter_f func, void *data) | |
3589 | { | |
3590 | char **dependents; | |
3591 | size_t count; | |
3592 | int i; | |
3593 | zfs_handle_t *child; | |
3594 | int ret = 0; | |
3595 | ||
3596 | if (get_dependents(zhp->zfs_hdl, allowrecursion, zhp->zfs_name, | |
3597 | &dependents, &count) != 0) | |
3598 | return (-1); | |
3599 | ||
3600 | for (i = 0; i < count; i++) { | |
3601 | if ((child = make_dataset_handle(zhp->zfs_hdl, | |
3602 | dependents[i])) == NULL) | |
3603 | continue; | |
3604 | ||
3605 | if ((ret = func(child, data)) != 0) | |
3606 | break; | |
3607 | } | |
3608 | ||
3609 | for (i = 0; i < count; i++) | |
3610 | free(dependents[i]); | |
3611 | free(dependents); | |
3612 | ||
3613 | return (ret); | |
3614 | } | |
3615 | ||
3616 | /* | |
3617 | * Renames the given dataset. | |
3618 | */ | |
3619 | int | |
3620 | zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive) | |
3621 | { | |
3622 | int ret; | |
2598c001 | 3623 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3624 | char *delim; |
3625 | prop_changelist_t *cl = NULL; | |
3626 | zfs_handle_t *zhrp = NULL; | |
3627 | char *parentname = NULL; | |
3628 | char parent[ZFS_MAXNAMELEN]; | |
3629 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
3630 | char errbuf[1024]; | |
3631 | ||
3632 | /* if we have the same exact name, just return success */ | |
3633 | if (strcmp(zhp->zfs_name, target) == 0) | |
3634 | return (0); | |
3635 | ||
3636 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3637 | "cannot rename to '%s'"), target); | |
3638 | ||
3639 | /* | |
3640 | * Make sure the target name is valid | |
3641 | */ | |
3642 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { | |
3643 | if ((strchr(target, '@') == NULL) || | |
3644 | *target == '@') { | |
3645 | /* | |
3646 | * Snapshot target name is abbreviated, | |
3647 | * reconstruct full dataset name | |
3648 | */ | |
3649 | (void) strlcpy(parent, zhp->zfs_name, | |
3650 | sizeof (parent)); | |
3651 | delim = strchr(parent, '@'); | |
3652 | if (strchr(target, '@') == NULL) | |
3653 | *(++delim) = '\0'; | |
3654 | else | |
3655 | *delim = '\0'; | |
3656 | (void) strlcat(parent, target, sizeof (parent)); | |
3657 | target = parent; | |
3658 | } else { | |
3659 | /* | |
3660 | * Make sure we're renaming within the same dataset. | |
3661 | */ | |
3662 | delim = strchr(target, '@'); | |
3663 | if (strncmp(zhp->zfs_name, target, delim - target) | |
3664 | != 0 || zhp->zfs_name[delim - target] != '@') { | |
3665 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3666 | "snapshots must be part of same " | |
3667 | "dataset")); | |
3668 | return (zfs_error(hdl, EZFS_CROSSTARGET, | |
3669 | errbuf)); | |
3670 | } | |
3671 | } | |
3672 | if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) | |
3673 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3674 | } else { | |
3675 | if (recursive) { | |
3676 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3677 | "recursive rename must be a snapshot")); | |
3678 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3679 | } | |
3680 | ||
3681 | if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) | |
3682 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
34dc7c2f BB |
3683 | |
3684 | /* validate parents */ | |
428870ff | 3685 | if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) |
34dc7c2f BB |
3686 | return (-1); |
3687 | ||
34dc7c2f BB |
3688 | /* make sure we're in the same pool */ |
3689 | verify((delim = strchr(target, '/')) != NULL); | |
3690 | if (strncmp(zhp->zfs_name, target, delim - target) != 0 || | |
3691 | zhp->zfs_name[delim - target] != '/') { | |
3692 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3693 | "datasets must be within same pool")); | |
3694 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
3695 | } | |
3696 | ||
3697 | /* new name cannot be a child of the current dataset name */ | |
428870ff | 3698 | if (is_descendant(zhp->zfs_name, target)) { |
34dc7c2f | 3699 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
428870ff | 3700 | "New dataset name cannot be a descendant of " |
34dc7c2f BB |
3701 | "current dataset name")); |
3702 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3703 | } | |
3704 | } | |
3705 | ||
3706 | (void) snprintf(errbuf, sizeof (errbuf), | |
3707 | dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); | |
3708 | ||
3709 | if (getzoneid() == GLOBAL_ZONEID && | |
3710 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { | |
3711 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3712 | "dataset is used in a non-global zone")); | |
3713 | return (zfs_error(hdl, EZFS_ZONED, errbuf)); | |
3714 | } | |
3715 | ||
3716 | if (recursive) { | |
d603ed6c | 3717 | struct destroydata dd; |
34dc7c2f BB |
3718 | |
3719 | parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); | |
3720 | if (parentname == NULL) { | |
3721 | ret = -1; | |
3722 | goto error; | |
3723 | } | |
3724 | delim = strchr(parentname, '@'); | |
3725 | *delim = '\0'; | |
3726 | zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); | |
3727 | if (zhrp == NULL) { | |
3728 | ret = -1; | |
3729 | goto error; | |
3730 | } | |
3731 | ||
d603ed6c BB |
3732 | dd.snapname = delim + 1; |
3733 | dd.gotone = B_FALSE; | |
3734 | dd.closezhp = B_TRUE; | |
3735 | ||
3736 | /* We remove any zvol links prior to renaming them */ | |
3737 | ret = zfs_iter_filesystems(zhrp, zfs_check_snap_cb, &dd); | |
3738 | if (ret) { | |
3739 | goto error; | |
3740 | } | |
34dc7c2f | 3741 | } else { |
b128c09f | 3742 | if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0, 0)) == NULL) |
34dc7c2f BB |
3743 | return (-1); |
3744 | ||
3745 | if (changelist_haszonedchild(cl)) { | |
3746 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3747 | "child dataset with inherited mountpoint is used " | |
3748 | "in a non-global zone")); | |
3749 | (void) zfs_error(hdl, EZFS_ZONED, errbuf); | |
d4ed6673 | 3750 | ret = -1; |
34dc7c2f BB |
3751 | goto error; |
3752 | } | |
3753 | ||
3754 | if ((ret = changelist_prefix(cl)) != 0) | |
3755 | goto error; | |
3756 | } | |
3757 | ||
3758 | if (ZFS_IS_VOLUME(zhp)) | |
3759 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3760 | else | |
3761 | zc.zc_objset_type = DMU_OST_ZFS; | |
3762 | ||
3763 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3764 | (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); | |
3765 | ||
3766 | zc.zc_cookie = recursive; | |
3767 | ||
3768 | if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { | |
3769 | /* | |
3770 | * if it was recursive, the one that actually failed will | |
3771 | * be in zc.zc_name | |
3772 | */ | |
3773 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3774 | "cannot rename '%s'"), zc.zc_name); | |
3775 | ||
3776 | if (recursive && errno == EEXIST) { | |
3777 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3778 | "a child dataset already has a snapshot " | |
3779 | "with the new name")); | |
3780 | (void) zfs_error(hdl, EZFS_EXISTS, errbuf); | |
3781 | } else { | |
3782 | (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); | |
3783 | } | |
3784 | ||
3785 | /* | |
3786 | * On failure, we still want to remount any filesystems that | |
3787 | * were previously mounted, so we don't alter the system state. | |
3788 | */ | |
d603ed6c BB |
3789 | if (recursive) { |
3790 | struct createdata cd; | |
3791 | ||
3792 | /* only create links for datasets that had existed */ | |
3793 | cd.cd_snapname = delim + 1; | |
3794 | cd.cd_ifexists = B_TRUE; | |
3795 | (void) zfs_iter_filesystems(zhrp, zfs_create_link_cb, | |
3796 | &cd); | |
3797 | } else { | |
34dc7c2f | 3798 | (void) changelist_postfix(cl); |
d603ed6c | 3799 | } |
34dc7c2f | 3800 | } else { |
d603ed6c BB |
3801 | if (recursive) { |
3802 | struct createdata cd; | |
3803 | ||
3804 | /* only create links for datasets that had existed */ | |
3805 | cd.cd_snapname = strchr(target, '@') + 1; | |
3806 | cd.cd_ifexists = B_TRUE; | |
3807 | ret = zfs_iter_filesystems(zhrp, zfs_create_link_cb, | |
3808 | &cd); | |
3809 | } else { | |
34dc7c2f BB |
3810 | changelist_rename(cl, zfs_get_name(zhp), target); |
3811 | ret = changelist_postfix(cl); | |
3812 | } | |
3813 | } | |
3814 | ||
3815 | error: | |
3816 | if (parentname) { | |
3817 | free(parentname); | |
3818 | } | |
3819 | if (zhrp) { | |
3820 | zfs_close(zhrp); | |
3821 | } | |
3822 | if (cl) { | |
3823 | changelist_free(cl); | |
3824 | } | |
3825 | return (ret); | |
3826 | } | |
3827 | ||
d603ed6c BB |
3828 | /* |
3829 | * Given a zvol dataset, issue the ioctl to create the appropriate minor node, | |
3830 | * and wait briefly for udev to create the /dev link. | |
3831 | */ | |
3832 | int | |
3833 | zvol_create_link(libzfs_handle_t *hdl, const char *dataset) | |
34dc7c2f | 3834 | { |
d603ed6c BB |
3835 | return (zvol_create_link_common(hdl, dataset, B_FALSE)); |
3836 | } | |
3837 | ||
3838 | static int | |
3839 | zvol_create_link_common(libzfs_handle_t *hdl, const char *dataset, int ifexists) | |
3840 | { | |
3841 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
3842 | char path[MAXPATHLEN]; | |
3843 | int error; | |
3844 | ||
3845 | (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); | |
3846 | ||
3847 | /* | |
3848 | * Issue the appropriate ioctl. | |
3849 | */ | |
3850 | if (ioctl(hdl->libzfs_fd, ZFS_IOC_CREATE_MINOR, &zc) != 0) { | |
3851 | switch (errno) { | |
3852 | case EEXIST: | |
3853 | /* | |
3854 | * Silently ignore the case where the link already | |
3855 | * exists. This allows 'zfs volinit' to be run multiple | |
3856 | * times without errors. | |
3857 | */ | |
3858 | return (0); | |
3859 | ||
3860 | case ENOENT: | |
3861 | /* | |
3862 | * Dataset does not exist in the kernel. If we | |
3863 | * don't care (see zfs_rename), then ignore the | |
3864 | * error quietly. | |
3865 | */ | |
3866 | if (ifexists) { | |
3867 | return (0); | |
3868 | } | |
3869 | ||
3870 | /* FALLTHROUGH */ | |
3871 | ||
3872 | default: | |
3873 | return (zfs_standard_error_fmt(hdl, errno, | |
3874 | dgettext(TEXT_DOMAIN, "cannot create device links " | |
3875 | "for '%s'"), dataset)); | |
3876 | } | |
3877 | } | |
3878 | ||
3879 | /* | |
3880 | * Wait up to 10 seconds for udev to create the device. | |
3881 | */ | |
3882 | (void) snprintf(path, sizeof (path), "%s/%s", ZVOL_DIR, dataset); | |
3883 | error = zpool_label_disk_wait(path, 10000); | |
3884 | if (error) | |
3885 | (void) printf(gettext("%s may not be immediately " | |
3886 | "available\n"), path); | |
3887 | ||
3888 | return (0); | |
3889 | } | |
3890 | ||
3891 | /* | |
3892 | * Remove a minor node for the given zvol and the associated /dev links. | |
3893 | */ | |
3894 | int | |
3895 | zvol_remove_link(libzfs_handle_t *hdl, const char *dataset) | |
3896 | { | |
3897 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; | |
3898 | ||
3899 | (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); | |
3900 | ||
3901 | if (ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc) != 0) { | |
3902 | switch (errno) { | |
3903 | case ENXIO: | |
3904 | /* | |
3905 | * Silently ignore the case where the link no longer | |
3906 | * exists, so that 'zfs volfini' can be run multiple | |
3907 | * times without errors. | |
3908 | */ | |
3909 | return (0); | |
3910 | ||
3911 | default: | |
3912 | return (zfs_standard_error_fmt(hdl, errno, | |
3913 | dgettext(TEXT_DOMAIN, "cannot remove device " | |
3914 | "links for '%s'"), dataset)); | |
3915 | } | |
3916 | } | |
3917 | ||
3918 | return (0); | |
34dc7c2f BB |
3919 | } |
3920 | ||
3921 | nvlist_t * | |
d603ed6c | 3922 | zfs_get_user_props(zfs_handle_t *zhp) |
34dc7c2f | 3923 | { |
d603ed6c | 3924 | return (zhp->zfs_user_props); |
34dc7c2f BB |
3925 | } |
3926 | ||
3927 | /* | |
3928 | * This function is used by 'zfs list' to determine the exact set of columns to | |
3929 | * display, and their maximum widths. This does two main things: | |
3930 | * | |
3931 | * - If this is a list of all properties, then expand the list to include | |
3932 | * all native properties, and set a flag so that for each dataset we look | |
3933 | * for new unique user properties and add them to the list. | |
3934 | * | |
3935 | * - For non fixed-width properties, keep track of the maximum width seen | |
428870ff BB |
3936 | * so that we can size the column appropriately. If the user has |
3937 | * requested received property values, we also need to compute the width | |
3938 | * of the RECEIVED column. | |
34dc7c2f BB |
3939 | */ |
3940 | int | |
428870ff | 3941 | zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received) |
34dc7c2f BB |
3942 | { |
3943 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
3944 | zprop_list_t *entry; | |
3945 | zprop_list_t **last, **start; | |
3946 | nvlist_t *userprops, *propval; | |
3947 | nvpair_t *elem; | |
3948 | char *strval; | |
3949 | char buf[ZFS_MAXPROPLEN]; | |
3950 | ||
3951 | if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) | |
3952 | return (-1); | |
3953 | ||
3954 | userprops = zfs_get_user_props(zhp); | |
3955 | ||
3956 | entry = *plp; | |
3957 | if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { | |
3958 | /* | |
3959 | * Go through and add any user properties as necessary. We | |
3960 | * start by incrementing our list pointer to the first | |
3961 | * non-native property. | |
3962 | */ | |
3963 | start = plp; | |
3964 | while (*start != NULL) { | |
3965 | if ((*start)->pl_prop == ZPROP_INVAL) | |
3966 | break; | |
3967 | start = &(*start)->pl_next; | |
3968 | } | |
3969 | ||
3970 | elem = NULL; | |
3971 | while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { | |
3972 | /* | |
3973 | * See if we've already found this property in our list. | |
3974 | */ | |
3975 | for (last = start; *last != NULL; | |
3976 | last = &(*last)->pl_next) { | |
3977 | if (strcmp((*last)->pl_user_prop, | |
3978 | nvpair_name(elem)) == 0) | |
3979 | break; | |
3980 | } | |
3981 | ||
3982 | if (*last == NULL) { | |
3983 | if ((entry = zfs_alloc(hdl, | |
3984 | sizeof (zprop_list_t))) == NULL || | |
3985 | ((entry->pl_user_prop = zfs_strdup(hdl, | |
3986 | nvpair_name(elem)))) == NULL) { | |
3987 | free(entry); | |
3988 | return (-1); | |
3989 | } | |
3990 | ||
3991 | entry->pl_prop = ZPROP_INVAL; | |
3992 | entry->pl_width = strlen(nvpair_name(elem)); | |
3993 | entry->pl_all = B_TRUE; | |
3994 | *last = entry; | |
3995 | } | |
3996 | } | |
3997 | } | |
3998 | ||
3999 | /* | |
4000 | * Now go through and check the width of any non-fixed columns | |
4001 | */ | |
4002 | for (entry = *plp; entry != NULL; entry = entry->pl_next) { | |
4003 | if (entry->pl_fixed) | |
4004 | continue; | |
4005 | ||
4006 | if (entry->pl_prop != ZPROP_INVAL) { | |
4007 | if (zfs_prop_get(zhp, entry->pl_prop, | |
4008 | buf, sizeof (buf), NULL, NULL, 0, B_FALSE) == 0) { | |
4009 | if (strlen(buf) > entry->pl_width) | |
4010 | entry->pl_width = strlen(buf); | |
4011 | } | |
428870ff BB |
4012 | if (received && zfs_prop_get_recvd(zhp, |
4013 | zfs_prop_to_name(entry->pl_prop), | |
4014 | buf, sizeof (buf), B_FALSE) == 0) | |
4015 | if (strlen(buf) > entry->pl_recvd_width) | |
4016 | entry->pl_recvd_width = strlen(buf); | |
4017 | } else { | |
4018 | if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, | |
4019 | &propval) == 0) { | |
4020 | verify(nvlist_lookup_string(propval, | |
4021 | ZPROP_VALUE, &strval) == 0); | |
4022 | if (strlen(strval) > entry->pl_width) | |
4023 | entry->pl_width = strlen(strval); | |
4024 | } | |
4025 | if (received && zfs_prop_get_recvd(zhp, | |
4026 | entry->pl_user_prop, | |
4027 | buf, sizeof (buf), B_FALSE) == 0) | |
4028 | if (strlen(buf) > entry->pl_recvd_width) | |
4029 | entry->pl_recvd_width = strlen(buf); | |
34dc7c2f BB |
4030 | } |
4031 | } | |
4032 | ||
4033 | return (0); | |
4034 | } | |
4035 | ||
9babb374 BB |
4036 | void |
4037 | zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) | |
4038 | { | |
4039 | nvpair_t *curr; | |
4040 | ||
4041 | /* | |
4042 | * Keep a reference to the props-table against which we prune the | |
4043 | * properties. | |
4044 | */ | |
4045 | zhp->zfs_props_table = props; | |
4046 | ||
4047 | curr = nvlist_next_nvpair(zhp->zfs_props, NULL); | |
4048 | ||
4049 | while (curr) { | |
4050 | zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); | |
4051 | nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); | |
4052 | ||
4053 | /* | |
428870ff BB |
4054 | * User properties will result in ZPROP_INVAL, and since we |
4055 | * only know how to prune standard ZFS properties, we always | |
4056 | * leave these in the list. This can also happen if we | |
4057 | * encounter an unknown DSL property (when running older | |
4058 | * software, for example). | |
9babb374 BB |
4059 | */ |
4060 | if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) | |
4061 | (void) nvlist_remove(zhp->zfs_props, | |
4062 | nvpair_name(curr), nvpair_type(curr)); | |
4063 | curr = next; | |
4064 | } | |
4065 | } | |
4066 | ||
4067 | static int | |
4068 | zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, | |
4069 | zfs_smb_acl_op_t cmd, char *resource1, char *resource2) | |
4070 | { | |
2598c001 | 4071 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
9babb374 BB |
4072 | nvlist_t *nvlist = NULL; |
4073 | int error; | |
4074 | ||
4075 | (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); | |
4076 | (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); | |
4077 | zc.zc_cookie = (uint64_t)cmd; | |
4078 | ||
4079 | if (cmd == ZFS_SMB_ACL_RENAME) { | |
4080 | if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { | |
4081 | (void) no_memory(hdl); | |
a6098088 | 4082 | return (-1); |
9babb374 BB |
4083 | } |
4084 | } | |
4085 | ||
4086 | switch (cmd) { | |
4087 | case ZFS_SMB_ACL_ADD: | |
4088 | case ZFS_SMB_ACL_REMOVE: | |
4089 | (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); | |
4090 | break; | |
4091 | case ZFS_SMB_ACL_RENAME: | |
4092 | if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, | |
4093 | resource1) != 0) { | |
4094 | (void) no_memory(hdl); | |
4095 | return (-1); | |
4096 | } | |
4097 | if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, | |
4098 | resource2) != 0) { | |
4099 | (void) no_memory(hdl); | |
4100 | return (-1); | |
4101 | } | |
4102 | if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { | |
4103 | nvlist_free(nvlist); | |
4104 | return (-1); | |
4105 | } | |
4106 | break; | |
4107 | case ZFS_SMB_ACL_PURGE: | |
4108 | break; | |
4109 | default: | |
4110 | return (-1); | |
4111 | } | |
4112 | error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); | |
4113 | if (nvlist) | |
4114 | nvlist_free(nvlist); | |
4115 | return (error); | |
4116 | } | |
4117 | ||
4118 | int | |
4119 | zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, | |
4120 | char *path, char *resource) | |
4121 | { | |
4122 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, | |
4123 | resource, NULL)); | |
4124 | } | |
4125 | ||
4126 | int | |
4127 | zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, | |
4128 | char *path, char *resource) | |
4129 | { | |
4130 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, | |
4131 | resource, NULL)); | |
4132 | } | |
4133 | ||
4134 | int | |
4135 | zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) | |
4136 | { | |
4137 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, | |
4138 | NULL, NULL)); | |
4139 | } | |
4140 | ||
4141 | int | |
4142 | zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, | |
4143 | char *oldname, char *newname) | |
4144 | { | |
4145 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, | |
4146 | oldname, newname)); | |
4147 | } | |
4148 | ||
4149 | int | |
4150 | zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, | |
4151 | zfs_userspace_cb_t func, void *arg) | |
4152 | { | |
2598c001 | 4153 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
9babb374 BB |
4154 | int error; |
4155 | zfs_useracct_t buf[100]; | |
4156 | ||
4157 | (void) strncpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
4158 | ||
4159 | zc.zc_objset_type = type; | |
4160 | zc.zc_nvlist_dst = (uintptr_t)buf; | |
4161 | ||
4162 | /* CONSTCOND */ | |
4163 | while (1) { | |
4164 | zfs_useracct_t *zua = buf; | |
4165 | ||
4166 | zc.zc_nvlist_dst_size = sizeof (buf); | |
4167 | error = ioctl(zhp->zfs_hdl->libzfs_fd, | |
4168 | ZFS_IOC_USERSPACE_MANY, &zc); | |
4169 | if (error || zc.zc_nvlist_dst_size == 0) | |
4170 | break; | |
4171 | ||
4172 | while (zc.zc_nvlist_dst_size > 0) { | |
4173 | error = func(arg, zua->zu_domain, zua->zu_rid, | |
4174 | zua->zu_space); | |
4175 | if (error != 0) | |
4176 | return (error); | |
4177 | zua++; | |
4178 | zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); | |
4179 | } | |
4180 | } | |
4181 | ||
4182 | return (error); | |
4183 | } | |
45d1cae3 BB |
4184 | |
4185 | int | |
4186 | zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, | |
572e2857 BB |
4187 | boolean_t recursive, boolean_t temphold, boolean_t enoent_ok, |
4188 | int cleanup_fd, uint64_t dsobj, uint64_t createtxg) | |
45d1cae3 | 4189 | { |
2598c001 | 4190 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
45d1cae3 BB |
4191 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
4192 | ||
572e2857 BB |
4193 | ASSERT(!recursive || dsobj == 0); |
4194 | ||
45d1cae3 BB |
4195 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
4196 | (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); | |
428870ff BB |
4197 | if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string)) |
4198 | >= sizeof (zc.zc_string)) | |
4199 | return (zfs_error(hdl, EZFS_TAGTOOLONG, tag)); | |
45d1cae3 | 4200 | zc.zc_cookie = recursive; |
428870ff | 4201 | zc.zc_temphold = temphold; |
572e2857 BB |
4202 | zc.zc_cleanup_fd = cleanup_fd; |
4203 | zc.zc_sendobj = dsobj; | |
4204 | zc.zc_createtxg = createtxg; | |
45d1cae3 BB |
4205 | |
4206 | if (zfs_ioctl(hdl, ZFS_IOC_HOLD, &zc) != 0) { | |
4207 | char errbuf[ZFS_MAXNAMELEN+32]; | |
4208 | ||
4209 | /* | |
4210 | * if it was recursive, the one that actually failed will be in | |
4211 | * zc.zc_name. | |
4212 | */ | |
4213 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
4214 | "cannot hold '%s@%s'"), zc.zc_name, snapname); | |
4215 | switch (errno) { | |
428870ff BB |
4216 | case E2BIG: |
4217 | /* | |
4218 | * Temporary tags wind up having the ds object id | |
4219 | * prepended. So even if we passed the length check | |
4220 | * above, it's still possible for the tag to wind | |
4221 | * up being slightly too long. | |
4222 | */ | |
4223 | return (zfs_error(hdl, EZFS_TAGTOOLONG, errbuf)); | |
45d1cae3 BB |
4224 | case ENOTSUP: |
4225 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4226 | "pool must be upgraded")); | |
4227 | return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); | |
4228 | case EINVAL: | |
4229 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
4230 | case EEXIST: | |
4231 | return (zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf)); | |
428870ff BB |
4232 | case ENOENT: |
4233 | if (enoent_ok) | |
572e2857 | 4234 | return (ENOENT); |
428870ff | 4235 | /* FALLTHROUGH */ |
45d1cae3 BB |
4236 | default: |
4237 | return (zfs_standard_error_fmt(hdl, errno, errbuf)); | |
4238 | } | |
4239 | } | |
4240 | ||
4241 | return (0); | |
4242 | } | |
4243 | ||
4244 | int | |
4245 | zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, | |
4246 | boolean_t recursive) | |
4247 | { | |
2598c001 | 4248 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
45d1cae3 BB |
4249 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
4250 | ||
4251 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
4252 | (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); | |
428870ff BB |
4253 | if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string)) |
4254 | >= sizeof (zc.zc_string)) | |
4255 | return (zfs_error(hdl, EZFS_TAGTOOLONG, tag)); | |
45d1cae3 BB |
4256 | zc.zc_cookie = recursive; |
4257 | ||
4258 | if (zfs_ioctl(hdl, ZFS_IOC_RELEASE, &zc) != 0) { | |
4259 | char errbuf[ZFS_MAXNAMELEN+32]; | |
4260 | ||
4261 | /* | |
4262 | * if it was recursive, the one that actually failed will be in | |
4263 | * zc.zc_name. | |
4264 | */ | |
4265 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
428870ff BB |
4266 | "cannot release '%s' from '%s@%s'"), tag, zc.zc_name, |
4267 | snapname); | |
45d1cae3 BB |
4268 | switch (errno) { |
4269 | case ESRCH: | |
4270 | return (zfs_error(hdl, EZFS_REFTAG_RELE, errbuf)); | |
4271 | case ENOTSUP: | |
4272 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4273 | "pool must be upgraded")); | |
4274 | return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); | |
4275 | case EINVAL: | |
4276 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
4277 | default: | |
4278 | return (zfs_standard_error_fmt(hdl, errno, errbuf)); | |
4279 | } | |
4280 | } | |
4281 | ||
4282 | return (0); | |
4283 | } | |
428870ff | 4284 | |
428870ff BB |
4285 | uint64_t |
4286 | zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) | |
4287 | { | |
4288 | uint64_t numdb; | |
4289 | uint64_t nblocks, volblocksize; | |
4290 | int ncopies; | |
4291 | char *strval; | |
4292 | ||
4293 | if (nvlist_lookup_string(props, | |
4294 | zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) | |
4295 | ncopies = atoi(strval); | |
4296 | else | |
4297 | ncopies = 1; | |
4298 | if (nvlist_lookup_uint64(props, | |
4299 | zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), | |
4300 | &volblocksize) != 0) | |
4301 | volblocksize = ZVOL_DEFAULT_BLOCKSIZE; | |
4302 | nblocks = volsize/volblocksize; | |
4303 | /* start with metadnode L0-L6 */ | |
4304 | numdb = 7; | |
4305 | /* calculate number of indirects */ | |
4306 | while (nblocks > 1) { | |
4307 | nblocks += DNODES_PER_LEVEL - 1; | |
4308 | nblocks /= DNODES_PER_LEVEL; | |
4309 | numdb += nblocks; | |
4310 | } | |
4311 | numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); | |
4312 | volsize *= ncopies; | |
4313 | /* | |
4314 | * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't | |
4315 | * compressed, but in practice they compress down to about | |
4316 | * 1100 bytes | |
4317 | */ | |
4318 | numdb *= 1ULL << DN_MAX_INDBLKSHIFT; | |
4319 | volsize += numdb; | |
4320 | return (volsize); | |
4321 | } |