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