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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | /* | |
572e2857 | 23 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
34dc7c2f BB |
26 | #include <ctype.h> |
27 | #include <errno.h> | |
34dc7c2f BB |
28 | #include <libintl.h> |
29 | #include <math.h> | |
30 | #include <stdio.h> | |
31 | #include <stdlib.h> | |
32 | #include <strings.h> | |
33 | #include <unistd.h> | |
34 | #include <stddef.h> | |
35 | #include <zone.h> | |
36 | #include <fcntl.h> | |
37 | #include <sys/mntent.h> | |
34dc7c2f | 38 | #include <sys/mount.h> |
34dc7c2f BB |
39 | #include <priv.h> |
40 | #include <pwd.h> | |
41 | #include <grp.h> | |
42 | #include <stddef.h> | |
43 | #include <ucred.h> | |
be160928 | 44 | #ifdef HAVE_IDMAP |
9babb374 BB |
45 | #include <idmap.h> |
46 | #include <aclutils.h> | |
45d1cae3 | 47 | #include <directory.h> |
be160928 | 48 | #endif /* HAVE_IDMAP */ |
34dc7c2f | 49 | |
428870ff | 50 | #include <sys/dnode.h> |
34dc7c2f BB |
51 | #include <sys/spa.h> |
52 | #include <sys/zap.h> | |
53 | #include <libzfs.h> | |
54 | ||
55 | #include "zfs_namecheck.h" | |
56 | #include "zfs_prop.h" | |
57 | #include "libzfs_impl.h" | |
58 | #include "zfs_deleg.h" | |
59 | ||
9babb374 BB |
60 | static int userquota_propname_decode(const char *propname, boolean_t zoned, |
61 | zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp); | |
34dc7c2f BB |
62 | |
63 | /* | |
64 | * Given a single type (not a mask of types), return the type in a human | |
65 | * readable form. | |
66 | */ | |
67 | const char * | |
68 | zfs_type_to_name(zfs_type_t type) | |
69 | { | |
70 | switch (type) { | |
71 | case ZFS_TYPE_FILESYSTEM: | |
72 | return (dgettext(TEXT_DOMAIN, "filesystem")); | |
73 | case ZFS_TYPE_SNAPSHOT: | |
74 | return (dgettext(TEXT_DOMAIN, "snapshot")); | |
75 | case ZFS_TYPE_VOLUME: | |
76 | return (dgettext(TEXT_DOMAIN, "volume")); | |
e75c13c3 BB |
77 | default: |
78 | break; | |
34dc7c2f BB |
79 | } |
80 | ||
81 | return (NULL); | |
82 | } | |
83 | ||
34dc7c2f BB |
84 | /* |
85 | * Validate a ZFS path. This is used even before trying to open the dataset, to | |
9babb374 BB |
86 | * provide a more meaningful error message. We call zfs_error_aux() to |
87 | * explain exactly why the name was not valid. | |
34dc7c2f | 88 | */ |
572e2857 | 89 | int |
34dc7c2f BB |
90 | zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, |
91 | boolean_t modifying) | |
92 | { | |
93 | namecheck_err_t why; | |
94 | char what; | |
95 | ||
96 | if (dataset_namecheck(path, &why, &what) != 0) { | |
97 | if (hdl != NULL) { | |
98 | switch (why) { | |
99 | case NAME_ERR_TOOLONG: | |
100 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
101 | "name is too long")); | |
102 | break; | |
103 | ||
104 | case NAME_ERR_LEADING_SLASH: | |
105 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
106 | "leading slash in name")); | |
107 | break; | |
108 | ||
109 | case NAME_ERR_EMPTY_COMPONENT: | |
110 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
111 | "empty component in name")); | |
112 | break; | |
113 | ||
114 | case NAME_ERR_TRAILING_SLASH: | |
115 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
116 | "trailing slash in name")); | |
117 | break; | |
118 | ||
119 | case NAME_ERR_INVALCHAR: | |
120 | zfs_error_aux(hdl, | |
121 | dgettext(TEXT_DOMAIN, "invalid character " | |
122 | "'%c' in name"), what); | |
123 | break; | |
124 | ||
125 | case NAME_ERR_MULTIPLE_AT: | |
126 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
127 | "multiple '@' delimiters in name")); | |
128 | break; | |
129 | ||
130 | case NAME_ERR_NOLETTER: | |
131 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
132 | "pool doesn't begin with a letter")); | |
133 | break; | |
134 | ||
135 | case NAME_ERR_RESERVED: | |
136 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
137 | "name is reserved")); | |
138 | break; | |
139 | ||
140 | case NAME_ERR_DISKLIKE: | |
141 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
142 | "reserved disk name")); | |
143 | break; | |
e75c13c3 BB |
144 | default: |
145 | break; | |
34dc7c2f BB |
146 | } |
147 | } | |
148 | ||
149 | return (0); | |
150 | } | |
151 | ||
152 | if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) { | |
153 | if (hdl != NULL) | |
154 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
155 | "snapshot delimiter '@' in filesystem name")); | |
156 | return (0); | |
157 | } | |
158 | ||
159 | if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) { | |
160 | if (hdl != NULL) | |
161 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
162 | "missing '@' delimiter in snapshot name")); | |
163 | return (0); | |
164 | } | |
165 | ||
166 | if (modifying && strchr(path, '%') != NULL) { | |
167 | if (hdl != NULL) | |
168 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
169 | "invalid character %c in name"), '%'); | |
170 | return (0); | |
171 | } | |
172 | ||
173 | return (-1); | |
174 | } | |
175 | ||
176 | int | |
177 | zfs_name_valid(const char *name, zfs_type_t type) | |
178 | { | |
179 | if (type == ZFS_TYPE_POOL) | |
180 | return (zpool_name_valid(NULL, B_FALSE, name)); | |
181 | return (zfs_validate_name(NULL, name, type, B_FALSE)); | |
182 | } | |
183 | ||
184 | /* | |
185 | * This function takes the raw DSL properties, and filters out the user-defined | |
186 | * properties into a separate nvlist. | |
187 | */ | |
188 | static nvlist_t * | |
189 | process_user_props(zfs_handle_t *zhp, nvlist_t *props) | |
190 | { | |
191 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
192 | nvpair_t *elem; | |
193 | nvlist_t *propval; | |
194 | nvlist_t *nvl; | |
195 | ||
196 | if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) { | |
197 | (void) no_memory(hdl); | |
198 | return (NULL); | |
199 | } | |
200 | ||
201 | elem = NULL; | |
202 | while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { | |
203 | if (!zfs_prop_user(nvpair_name(elem))) | |
204 | continue; | |
205 | ||
206 | verify(nvpair_value_nvlist(elem, &propval) == 0); | |
207 | if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) { | |
208 | nvlist_free(nvl); | |
209 | (void) no_memory(hdl); | |
210 | return (NULL); | |
211 | } | |
212 | } | |
213 | ||
214 | return (nvl); | |
215 | } | |
216 | ||
b128c09f BB |
217 | static zpool_handle_t * |
218 | zpool_add_handle(zfs_handle_t *zhp, const char *pool_name) | |
219 | { | |
220 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
221 | zpool_handle_t *zph; | |
222 | ||
223 | if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) { | |
224 | if (hdl->libzfs_pool_handles != NULL) | |
225 | zph->zpool_next = hdl->libzfs_pool_handles; | |
226 | hdl->libzfs_pool_handles = zph; | |
227 | } | |
228 | return (zph); | |
229 | } | |
230 | ||
231 | static zpool_handle_t * | |
232 | zpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len) | |
233 | { | |
234 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
235 | zpool_handle_t *zph = hdl->libzfs_pool_handles; | |
236 | ||
237 | while ((zph != NULL) && | |
238 | (strncmp(pool_name, zpool_get_name(zph), len) != 0)) | |
239 | zph = zph->zpool_next; | |
240 | return (zph); | |
241 | } | |
242 | ||
243 | /* | |
244 | * Returns a handle to the pool that contains the provided dataset. | |
245 | * If a handle to that pool already exists then that handle is returned. | |
246 | * Otherwise, a new handle is created and added to the list of handles. | |
247 | */ | |
248 | static zpool_handle_t * | |
249 | zpool_handle(zfs_handle_t *zhp) | |
250 | { | |
251 | char *pool_name; | |
252 | int len; | |
253 | zpool_handle_t *zph; | |
254 | ||
255 | len = strcspn(zhp->zfs_name, "/@") + 1; | |
256 | pool_name = zfs_alloc(zhp->zfs_hdl, len); | |
257 | (void) strlcpy(pool_name, zhp->zfs_name, len); | |
258 | ||
259 | zph = zpool_find_handle(zhp, pool_name, len); | |
260 | if (zph == NULL) | |
261 | zph = zpool_add_handle(zhp, pool_name); | |
262 | ||
263 | free(pool_name); | |
264 | return (zph); | |
265 | } | |
266 | ||
267 | void | |
268 | zpool_free_handles(libzfs_handle_t *hdl) | |
269 | { | |
270 | zpool_handle_t *next, *zph = hdl->libzfs_pool_handles; | |
271 | ||
272 | while (zph != NULL) { | |
273 | next = zph->zpool_next; | |
274 | zpool_close(zph); | |
275 | zph = next; | |
276 | } | |
277 | hdl->libzfs_pool_handles = NULL; | |
278 | } | |
279 | ||
34dc7c2f BB |
280 | /* |
281 | * Utility function to gather stats (objset and zpl) for the given object. | |
282 | */ | |
283 | static int | |
fb5f0bc8 | 284 | get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) |
34dc7c2f | 285 | { |
34dc7c2f | 286 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
34dc7c2f | 287 | |
fb5f0bc8 | 288 | (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); |
34dc7c2f | 289 | |
fb5f0bc8 | 290 | while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) { |
34dc7c2f | 291 | if (errno == ENOMEM) { |
fb5f0bc8 | 292 | if (zcmd_expand_dst_nvlist(hdl, zc) != 0) { |
34dc7c2f BB |
293 | return (-1); |
294 | } | |
295 | } else { | |
34dc7c2f BB |
296 | return (-1); |
297 | } | |
298 | } | |
fb5f0bc8 BB |
299 | return (0); |
300 | } | |
34dc7c2f | 301 | |
428870ff BB |
302 | /* |
303 | * Utility function to get the received properties of the given object. | |
304 | */ | |
305 | static int | |
306 | get_recvd_props_ioctl(zfs_handle_t *zhp) | |
307 | { | |
308 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
309 | nvlist_t *recvdprops; | |
2598c001 | 310 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
428870ff BB |
311 | int err; |
312 | ||
313 | if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) | |
314 | return (-1); | |
315 | ||
316 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
317 | ||
318 | while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { | |
319 | if (errno == ENOMEM) { | |
320 | if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { | |
321 | return (-1); | |
322 | } | |
323 | } else { | |
324 | zcmd_free_nvlists(&zc); | |
325 | return (-1); | |
326 | } | |
327 | } | |
328 | ||
329 | err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); | |
330 | zcmd_free_nvlists(&zc); | |
331 | if (err != 0) | |
332 | return (-1); | |
333 | ||
334 | nvlist_free(zhp->zfs_recvd_props); | |
335 | zhp->zfs_recvd_props = recvdprops; | |
336 | ||
337 | return (0); | |
338 | } | |
339 | ||
fb5f0bc8 BB |
340 | static int |
341 | put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) | |
342 | { | |
343 | nvlist_t *allprops, *userprops; | |
34dc7c2f | 344 | |
fb5f0bc8 BB |
345 | zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */ |
346 | ||
347 | if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) { | |
34dc7c2f BB |
348 | return (-1); |
349 | } | |
350 | ||
9babb374 BB |
351 | /* |
352 | * XXX Why do we store the user props separately, in addition to | |
353 | * storing them in zfs_props? | |
354 | */ | |
34dc7c2f BB |
355 | if ((userprops = process_user_props(zhp, allprops)) == NULL) { |
356 | nvlist_free(allprops); | |
357 | return (-1); | |
358 | } | |
359 | ||
360 | nvlist_free(zhp->zfs_props); | |
361 | nvlist_free(zhp->zfs_user_props); | |
362 | ||
363 | zhp->zfs_props = allprops; | |
364 | zhp->zfs_user_props = userprops; | |
365 | ||
366 | return (0); | |
367 | } | |
368 | ||
fb5f0bc8 BB |
369 | static int |
370 | get_stats(zfs_handle_t *zhp) | |
371 | { | |
372 | int rc = 0; | |
2598c001 | 373 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
fb5f0bc8 BB |
374 | |
375 | if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) | |
376 | return (-1); | |
377 | if (get_stats_ioctl(zhp, &zc) != 0) | |
378 | rc = -1; | |
379 | else if (put_stats_zhdl(zhp, &zc) != 0) | |
380 | rc = -1; | |
381 | zcmd_free_nvlists(&zc); | |
382 | return (rc); | |
383 | } | |
384 | ||
34dc7c2f BB |
385 | /* |
386 | * Refresh the properties currently stored in the handle. | |
387 | */ | |
388 | void | |
389 | zfs_refresh_properties(zfs_handle_t *zhp) | |
390 | { | |
391 | (void) get_stats(zhp); | |
392 | } | |
393 | ||
394 | /* | |
395 | * Makes a handle from the given dataset name. Used by zfs_open() and | |
396 | * zfs_iter_* to create child handles on the fly. | |
397 | */ | |
fb5f0bc8 BB |
398 | static int |
399 | make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) | |
34dc7c2f | 400 | { |
428870ff | 401 | if (put_stats_zhdl(zhp, zc) != 0) |
fb5f0bc8 | 402 | return (-1); |
34dc7c2f BB |
403 | |
404 | /* | |
405 | * We've managed to open the dataset and gather statistics. Determine | |
406 | * the high-level type. | |
407 | */ | |
408 | if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) | |
409 | zhp->zfs_head_type = ZFS_TYPE_VOLUME; | |
410 | else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) | |
411 | zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; | |
412 | else | |
413 | abort(); | |
414 | ||
415 | if (zhp->zfs_dmustats.dds_is_snapshot) | |
416 | zhp->zfs_type = ZFS_TYPE_SNAPSHOT; | |
417 | else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) | |
418 | zhp->zfs_type = ZFS_TYPE_VOLUME; | |
419 | else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) | |
420 | zhp->zfs_type = ZFS_TYPE_FILESYSTEM; | |
421 | else | |
422 | abort(); /* we should never see any other types */ | |
423 | ||
428870ff BB |
424 | if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) |
425 | return (-1); | |
426 | ||
fb5f0bc8 BB |
427 | return (0); |
428 | } | |
429 | ||
430 | zfs_handle_t * | |
431 | make_dataset_handle(libzfs_handle_t *hdl, const char *path) | |
432 | { | |
2598c001 | 433 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
fb5f0bc8 BB |
434 | |
435 | zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); | |
436 | ||
437 | if (zhp == NULL) | |
438 | return (NULL); | |
439 | ||
440 | zhp->zfs_hdl = hdl; | |
441 | (void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name)); | |
442 | if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) { | |
443 | free(zhp); | |
444 | return (NULL); | |
445 | } | |
446 | if (get_stats_ioctl(zhp, &zc) == -1) { | |
447 | zcmd_free_nvlists(&zc); | |
448 | free(zhp); | |
449 | return (NULL); | |
450 | } | |
451 | if (make_dataset_handle_common(zhp, &zc) == -1) { | |
452 | free(zhp); | |
453 | zhp = NULL; | |
454 | } | |
455 | zcmd_free_nvlists(&zc); | |
456 | return (zhp); | |
457 | } | |
458 | ||
459 | static zfs_handle_t * | |
460 | make_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc) | |
461 | { | |
462 | zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); | |
463 | ||
464 | if (zhp == NULL) | |
465 | return (NULL); | |
466 | ||
467 | zhp->zfs_hdl = hdl; | |
468 | (void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name)); | |
469 | if (make_dataset_handle_common(zhp, zc) == -1) { | |
470 | free(zhp); | |
471 | return (NULL); | |
472 | } | |
34dc7c2f BB |
473 | return (zhp); |
474 | } | |
475 | ||
476 | /* | |
477 | * Opens the given snapshot, filesystem, or volume. The 'types' | |
478 | * argument is a mask of acceptable types. The function will print an | |
479 | * appropriate error message and return NULL if it can't be opened. | |
480 | */ | |
481 | zfs_handle_t * | |
482 | zfs_open(libzfs_handle_t *hdl, const char *path, int types) | |
483 | { | |
484 | zfs_handle_t *zhp; | |
485 | char errbuf[1024]; | |
486 | ||
487 | (void) snprintf(errbuf, sizeof (errbuf), | |
488 | dgettext(TEXT_DOMAIN, "cannot open '%s'"), path); | |
489 | ||
490 | /* | |
491 | * Validate the name before we even try to open it. | |
492 | */ | |
493 | if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) { | |
494 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
495 | "invalid dataset name")); | |
496 | (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); | |
497 | return (NULL); | |
498 | } | |
499 | ||
500 | /* | |
501 | * Try to get stats for the dataset, which will tell us if it exists. | |
502 | */ | |
503 | errno = 0; | |
504 | if ((zhp = make_dataset_handle(hdl, path)) == NULL) { | |
505 | (void) zfs_standard_error(hdl, errno, errbuf); | |
506 | return (NULL); | |
507 | } | |
508 | ||
509 | if (!(types & zhp->zfs_type)) { | |
510 | (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); | |
511 | zfs_close(zhp); | |
512 | return (NULL); | |
513 | } | |
514 | ||
515 | return (zhp); | |
516 | } | |
517 | ||
518 | /* | |
519 | * Release a ZFS handle. Nothing to do but free the associated memory. | |
520 | */ | |
521 | void | |
522 | zfs_close(zfs_handle_t *zhp) | |
523 | { | |
524 | if (zhp->zfs_mntopts) | |
525 | free(zhp->zfs_mntopts); | |
526 | nvlist_free(zhp->zfs_props); | |
527 | nvlist_free(zhp->zfs_user_props); | |
428870ff | 528 | nvlist_free(zhp->zfs_recvd_props); |
34dc7c2f BB |
529 | free(zhp); |
530 | } | |
531 | ||
fb5f0bc8 BB |
532 | typedef struct mnttab_node { |
533 | struct mnttab mtn_mt; | |
534 | avl_node_t mtn_node; | |
535 | } mnttab_node_t; | |
536 | ||
537 | static int | |
538 | libzfs_mnttab_cache_compare(const void *arg1, const void *arg2) | |
539 | { | |
540 | const mnttab_node_t *mtn1 = arg1; | |
541 | const mnttab_node_t *mtn2 = arg2; | |
542 | int rv; | |
543 | ||
544 | rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special); | |
545 | ||
546 | if (rv == 0) | |
547 | return (0); | |
548 | return (rv > 0 ? 1 : -1); | |
549 | } | |
550 | ||
551 | void | |
552 | libzfs_mnttab_init(libzfs_handle_t *hdl) | |
553 | { | |
fb5f0bc8 BB |
554 | assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0); |
555 | avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare, | |
556 | sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node)); | |
9babb374 BB |
557 | } |
558 | ||
559 | void | |
560 | libzfs_mnttab_update(libzfs_handle_t *hdl) | |
561 | { | |
562 | struct mnttab entry; | |
fb5f0bc8 BB |
563 | |
564 | rewind(hdl->libzfs_mnttab); | |
565 | while (getmntent(hdl->libzfs_mnttab, &entry) == 0) { | |
566 | mnttab_node_t *mtn; | |
567 | ||
568 | if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) | |
569 | continue; | |
570 | mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); | |
571 | mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special); | |
572 | mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp); | |
573 | mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype); | |
574 | mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts); | |
575 | avl_add(&hdl->libzfs_mnttab_cache, mtn); | |
576 | } | |
577 | } | |
578 | ||
579 | void | |
580 | libzfs_mnttab_fini(libzfs_handle_t *hdl) | |
581 | { | |
582 | void *cookie = NULL; | |
583 | mnttab_node_t *mtn; | |
584 | ||
c65aa5b2 | 585 | while ((mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie))) { |
fb5f0bc8 BB |
586 | free(mtn->mtn_mt.mnt_special); |
587 | free(mtn->mtn_mt.mnt_mountp); | |
588 | free(mtn->mtn_mt.mnt_fstype); | |
589 | free(mtn->mtn_mt.mnt_mntopts); | |
590 | free(mtn); | |
591 | } | |
592 | avl_destroy(&hdl->libzfs_mnttab_cache); | |
593 | } | |
594 | ||
9babb374 BB |
595 | void |
596 | libzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable) | |
597 | { | |
598 | hdl->libzfs_mnttab_enable = enable; | |
599 | } | |
600 | ||
fb5f0bc8 BB |
601 | int |
602 | libzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname, | |
603 | struct mnttab *entry) | |
604 | { | |
605 | mnttab_node_t find; | |
606 | mnttab_node_t *mtn; | |
607 | ||
9babb374 BB |
608 | if (!hdl->libzfs_mnttab_enable) { |
609 | struct mnttab srch = { 0 }; | |
610 | ||
611 | if (avl_numnodes(&hdl->libzfs_mnttab_cache)) | |
612 | libzfs_mnttab_fini(hdl); | |
613 | rewind(hdl->libzfs_mnttab); | |
614 | srch.mnt_special = (char *)fsname; | |
615 | srch.mnt_fstype = MNTTYPE_ZFS; | |
616 | if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0) | |
617 | return (0); | |
618 | else | |
619 | return (ENOENT); | |
620 | } | |
621 | ||
fb5f0bc8 | 622 | if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) |
9babb374 | 623 | libzfs_mnttab_update(hdl); |
fb5f0bc8 BB |
624 | |
625 | find.mtn_mt.mnt_special = (char *)fsname; | |
626 | mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL); | |
627 | if (mtn) { | |
628 | *entry = mtn->mtn_mt; | |
629 | return (0); | |
630 | } | |
631 | return (ENOENT); | |
632 | } | |
633 | ||
634 | void | |
635 | libzfs_mnttab_add(libzfs_handle_t *hdl, const char *special, | |
636 | const char *mountp, const char *mntopts) | |
637 | { | |
638 | mnttab_node_t *mtn; | |
639 | ||
640 | if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) | |
641 | return; | |
642 | mtn = zfs_alloc(hdl, sizeof (mnttab_node_t)); | |
643 | mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special); | |
644 | mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp); | |
645 | mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS); | |
646 | mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts); | |
647 | avl_add(&hdl->libzfs_mnttab_cache, mtn); | |
648 | } | |
649 | ||
650 | void | |
651 | libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) | |
652 | { | |
653 | mnttab_node_t find; | |
654 | mnttab_node_t *ret; | |
655 | ||
656 | find.mtn_mt.mnt_special = (char *)fsname; | |
c65aa5b2 | 657 | if ((ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL))) { |
fb5f0bc8 BB |
658 | avl_remove(&hdl->libzfs_mnttab_cache, ret); |
659 | free(ret->mtn_mt.mnt_special); | |
660 | free(ret->mtn_mt.mnt_mountp); | |
661 | free(ret->mtn_mt.mnt_fstype); | |
662 | free(ret->mtn_mt.mnt_mntopts); | |
663 | free(ret); | |
664 | } | |
665 | } | |
666 | ||
34dc7c2f BB |
667 | int |
668 | zfs_spa_version(zfs_handle_t *zhp, int *spa_version) | |
669 | { | |
b128c09f | 670 | zpool_handle_t *zpool_handle = zhp->zpool_hdl; |
34dc7c2f | 671 | |
34dc7c2f BB |
672 | if (zpool_handle == NULL) |
673 | return (-1); | |
674 | ||
675 | *spa_version = zpool_get_prop_int(zpool_handle, | |
676 | ZPOOL_PROP_VERSION, NULL); | |
34dc7c2f BB |
677 | return (0); |
678 | } | |
679 | ||
680 | /* | |
681 | * The choice of reservation property depends on the SPA version. | |
682 | */ | |
683 | static int | |
684 | zfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop) | |
685 | { | |
686 | int spa_version; | |
687 | ||
688 | if (zfs_spa_version(zhp, &spa_version) < 0) | |
689 | return (-1); | |
690 | ||
691 | if (spa_version >= SPA_VERSION_REFRESERVATION) | |
692 | *resv_prop = ZFS_PROP_REFRESERVATION; | |
693 | else | |
694 | *resv_prop = ZFS_PROP_RESERVATION; | |
695 | ||
696 | return (0); | |
697 | } | |
698 | ||
699 | /* | |
700 | * Given an nvlist of properties to set, validates that they are correct, and | |
701 | * parses any numeric properties (index, boolean, etc) if they are specified as | |
702 | * strings. | |
703 | */ | |
b128c09f BB |
704 | nvlist_t * |
705 | zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, | |
34dc7c2f BB |
706 | uint64_t zoned, zfs_handle_t *zhp, const char *errbuf) |
707 | { | |
708 | nvpair_t *elem; | |
709 | uint64_t intval; | |
710 | char *strval; | |
711 | zfs_prop_t prop; | |
712 | nvlist_t *ret; | |
713 | int chosen_normal = -1; | |
714 | int chosen_utf = -1; | |
715 | ||
34dc7c2f BB |
716 | if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) { |
717 | (void) no_memory(hdl); | |
718 | return (NULL); | |
719 | } | |
720 | ||
9babb374 BB |
721 | /* |
722 | * Make sure this property is valid and applies to this type. | |
723 | */ | |
724 | ||
34dc7c2f BB |
725 | elem = NULL; |
726 | while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { | |
727 | const char *propname = nvpair_name(elem); | |
728 | ||
9babb374 BB |
729 | prop = zfs_name_to_prop(propname); |
730 | if (prop == ZPROP_INVAL && zfs_prop_user(propname)) { | |
34dc7c2f | 731 | /* |
9babb374 | 732 | * This is a user property: make sure it's a |
34dc7c2f BB |
733 | * string, and that it's less than ZAP_MAXNAMELEN. |
734 | */ | |
735 | if (nvpair_type(elem) != DATA_TYPE_STRING) { | |
736 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
737 | "'%s' must be a string"), propname); | |
738 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
739 | goto error; | |
740 | } | |
741 | ||
742 | if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { | |
743 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
744 | "property name '%s' is too long"), | |
745 | propname); | |
746 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
747 | goto error; | |
748 | } | |
749 | ||
750 | (void) nvpair_value_string(elem, &strval); | |
751 | if (nvlist_add_string(ret, propname, strval) != 0) { | |
752 | (void) no_memory(hdl); | |
753 | goto error; | |
754 | } | |
755 | continue; | |
756 | } | |
757 | ||
9babb374 BB |
758 | /* |
759 | * Currently, only user properties can be modified on | |
760 | * snapshots. | |
761 | */ | |
b128c09f BB |
762 | if (type == ZFS_TYPE_SNAPSHOT) { |
763 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
764 | "this property can not be modified for snapshots")); | |
765 | (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); | |
766 | goto error; | |
767 | } | |
768 | ||
9babb374 BB |
769 | if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) { |
770 | zfs_userquota_prop_t uqtype; | |
771 | char newpropname[128]; | |
772 | char domain[128]; | |
773 | uint64_t rid; | |
774 | uint64_t valary[3]; | |
775 | ||
776 | if (userquota_propname_decode(propname, zoned, | |
777 | &uqtype, domain, sizeof (domain), &rid) != 0) { | |
778 | zfs_error_aux(hdl, | |
779 | dgettext(TEXT_DOMAIN, | |
780 | "'%s' has an invalid user/group name"), | |
781 | propname); | |
782 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
783 | goto error; | |
784 | } | |
785 | ||
786 | if (uqtype != ZFS_PROP_USERQUOTA && | |
787 | uqtype != ZFS_PROP_GROUPQUOTA) { | |
788 | zfs_error_aux(hdl, | |
789 | dgettext(TEXT_DOMAIN, "'%s' is readonly"), | |
790 | propname); | |
791 | (void) zfs_error(hdl, EZFS_PROPREADONLY, | |
792 | errbuf); | |
793 | goto error; | |
794 | } | |
795 | ||
796 | if (nvpair_type(elem) == DATA_TYPE_STRING) { | |
797 | (void) nvpair_value_string(elem, &strval); | |
798 | if (strcmp(strval, "none") == 0) { | |
799 | intval = 0; | |
800 | } else if (zfs_nicestrtonum(hdl, | |
801 | strval, &intval) != 0) { | |
802 | (void) zfs_error(hdl, | |
803 | EZFS_BADPROP, errbuf); | |
804 | goto error; | |
805 | } | |
806 | } else if (nvpair_type(elem) == | |
807 | DATA_TYPE_UINT64) { | |
808 | (void) nvpair_value_uint64(elem, &intval); | |
809 | if (intval == 0) { | |
810 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
811 | "use 'none' to disable " | |
812 | "userquota/groupquota")); | |
813 | goto error; | |
814 | } | |
815 | } else { | |
816 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
817 | "'%s' must be a number"), propname); | |
818 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
819 | goto error; | |
820 | } | |
821 | ||
428870ff BB |
822 | /* |
823 | * Encode the prop name as | |
824 | * userquota@<hex-rid>-domain, to make it easy | |
825 | * for the kernel to decode. | |
826 | */ | |
9babb374 | 827 | (void) snprintf(newpropname, sizeof (newpropname), |
428870ff BB |
828 | "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], |
829 | (longlong_t)rid, domain); | |
9babb374 BB |
830 | valary[0] = uqtype; |
831 | valary[1] = rid; | |
832 | valary[2] = intval; | |
833 | if (nvlist_add_uint64_array(ret, newpropname, | |
834 | valary, 3) != 0) { | |
835 | (void) no_memory(hdl); | |
836 | goto error; | |
837 | } | |
838 | continue; | |
839 | } | |
840 | ||
841 | if (prop == ZPROP_INVAL) { | |
842 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
843 | "invalid property '%s'"), propname); | |
844 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
845 | goto error; | |
846 | } | |
847 | ||
34dc7c2f BB |
848 | if (!zfs_prop_valid_for_type(prop, type)) { |
849 | zfs_error_aux(hdl, | |
850 | dgettext(TEXT_DOMAIN, "'%s' does not " | |
851 | "apply to datasets of this type"), propname); | |
852 | (void) zfs_error(hdl, EZFS_PROPTYPE, errbuf); | |
853 | goto error; | |
854 | } | |
855 | ||
856 | if (zfs_prop_readonly(prop) && | |
857 | (!zfs_prop_setonce(prop) || zhp != NULL)) { | |
858 | zfs_error_aux(hdl, | |
859 | dgettext(TEXT_DOMAIN, "'%s' is readonly"), | |
860 | propname); | |
861 | (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); | |
862 | goto error; | |
863 | } | |
864 | ||
865 | if (zprop_parse_value(hdl, elem, prop, type, ret, | |
866 | &strval, &intval, errbuf) != 0) | |
867 | goto error; | |
868 | ||
869 | /* | |
870 | * Perform some additional checks for specific properties. | |
871 | */ | |
872 | switch (prop) { | |
873 | case ZFS_PROP_VERSION: | |
874 | { | |
875 | int version; | |
876 | ||
877 | if (zhp == NULL) | |
878 | break; | |
879 | version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION); | |
880 | if (intval < version) { | |
881 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
882 | "Can not downgrade; already at version %u"), | |
883 | version); | |
884 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
885 | goto error; | |
886 | } | |
887 | break; | |
888 | } | |
889 | ||
890 | case ZFS_PROP_RECORDSIZE: | |
891 | case ZFS_PROP_VOLBLOCKSIZE: | |
892 | /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */ | |
893 | if (intval < SPA_MINBLOCKSIZE || | |
894 | intval > SPA_MAXBLOCKSIZE || !ISP2(intval)) { | |
895 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
896 | "'%s' must be power of 2 from %u " | |
897 | "to %uk"), propname, | |
898 | (uint_t)SPA_MINBLOCKSIZE, | |
899 | (uint_t)SPA_MAXBLOCKSIZE >> 10); | |
900 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
901 | goto error; | |
902 | } | |
903 | break; | |
904 | ||
428870ff BB |
905 | case ZFS_PROP_MLSLABEL: |
906 | { | |
d2c15e84 | 907 | #ifdef HAVE_MLSLABEL |
428870ff BB |
908 | /* |
909 | * Verify the mlslabel string and convert to | |
910 | * internal hex label string. | |
911 | */ | |
912 | ||
913 | m_label_t *new_sl; | |
914 | char *hex = NULL; /* internal label string */ | |
915 | ||
916 | /* Default value is already OK. */ | |
917 | if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) | |
918 | break; | |
919 | ||
920 | /* Verify the label can be converted to binary form */ | |
921 | if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || | |
922 | (str_to_label(strval, &new_sl, MAC_LABEL, | |
923 | L_NO_CORRECTION, NULL) == -1)) { | |
924 | goto badlabel; | |
34dc7c2f BB |
925 | } |
926 | ||
428870ff BB |
927 | /* Now translate to hex internal label string */ |
928 | if (label_to_str(new_sl, &hex, M_INTERNAL, | |
929 | DEF_NAMES) != 0) { | |
930 | if (hex) | |
931 | free(hex); | |
932 | goto badlabel; | |
933 | } | |
934 | m_label_free(new_sl); | |
935 | ||
936 | /* If string is already in internal form, we're done. */ | |
937 | if (strcmp(strval, hex) == 0) { | |
938 | free(hex); | |
939 | break; | |
940 | } | |
941 | ||
942 | /* Replace the label string with the internal form. */ | |
943 | (void) nvlist_remove(ret, zfs_prop_to_name(prop), | |
944 | DATA_TYPE_STRING); | |
945 | verify(nvlist_add_string(ret, zfs_prop_to_name(prop), | |
946 | hex) == 0); | |
947 | free(hex); | |
948 | ||
34dc7c2f BB |
949 | break; |
950 | ||
428870ff BB |
951 | badlabel: |
952 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
953 | "invalid mlslabel '%s'"), strval); | |
954 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
955 | m_label_free(new_sl); /* OK if null */ | |
956 | goto error; | |
d2c15e84 BB |
957 | #else |
958 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
959 | "mlslabels are unsupported")); | |
960 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
961 | goto error; | |
962 | #endif /* HAVE_MLSLABEL */ | |
428870ff BB |
963 | } |
964 | ||
34dc7c2f BB |
965 | case ZFS_PROP_MOUNTPOINT: |
966 | { | |
967 | namecheck_err_t why; | |
968 | ||
969 | if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 || | |
970 | strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0) | |
971 | break; | |
972 | ||
973 | if (mountpoint_namecheck(strval, &why)) { | |
974 | switch (why) { | |
975 | case NAME_ERR_LEADING_SLASH: | |
976 | zfs_error_aux(hdl, | |
977 | dgettext(TEXT_DOMAIN, | |
978 | "'%s' must be an absolute path, " | |
979 | "'none', or 'legacy'"), propname); | |
980 | break; | |
981 | case NAME_ERR_TOOLONG: | |
982 | zfs_error_aux(hdl, | |
983 | dgettext(TEXT_DOMAIN, | |
984 | "component of '%s' is too long"), | |
985 | propname); | |
986 | break; | |
e75c13c3 BB |
987 | default: |
988 | break; | |
34dc7c2f BB |
989 | } |
990 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
991 | goto error; | |
992 | } | |
993 | } | |
994 | ||
995 | /*FALLTHRU*/ | |
996 | ||
997 | case ZFS_PROP_SHARESMB: | |
998 | case ZFS_PROP_SHARENFS: | |
999 | /* | |
1000 | * For the mountpoint and sharenfs or sharesmb | |
1001 | * properties, check if it can be set in a | |
1002 | * global/non-global zone based on | |
1003 | * the zoned property value: | |
1004 | * | |
1005 | * global zone non-global zone | |
1006 | * -------------------------------------------------- | |
1007 | * zoned=on mountpoint (no) mountpoint (yes) | |
1008 | * sharenfs (no) sharenfs (no) | |
1009 | * sharesmb (no) sharesmb (no) | |
1010 | * | |
1011 | * zoned=off mountpoint (yes) N/A | |
1012 | * sharenfs (yes) | |
1013 | * sharesmb (yes) | |
1014 | */ | |
1015 | if (zoned) { | |
1016 | if (getzoneid() == GLOBAL_ZONEID) { | |
1017 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1018 | "'%s' cannot be set on " | |
1019 | "dataset in a non-global zone"), | |
1020 | propname); | |
1021 | (void) zfs_error(hdl, EZFS_ZONED, | |
1022 | errbuf); | |
1023 | goto error; | |
1024 | } else if (prop == ZFS_PROP_SHARENFS || | |
1025 | prop == ZFS_PROP_SHARESMB) { | |
1026 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1027 | "'%s' cannot be set in " | |
1028 | "a non-global zone"), propname); | |
1029 | (void) zfs_error(hdl, EZFS_ZONED, | |
1030 | errbuf); | |
1031 | goto error; | |
1032 | } | |
1033 | } else if (getzoneid() != GLOBAL_ZONEID) { | |
1034 | /* | |
1035 | * If zoned property is 'off', this must be in | |
9babb374 | 1036 | * a global zone. If not, something is wrong. |
34dc7c2f BB |
1037 | */ |
1038 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1039 | "'%s' cannot be set while dataset " | |
1040 | "'zoned' property is set"), propname); | |
1041 | (void) zfs_error(hdl, EZFS_ZONED, errbuf); | |
1042 | goto error; | |
1043 | } | |
1044 | ||
1045 | /* | |
1046 | * At this point, it is legitimate to set the | |
1047 | * property. Now we want to make sure that the | |
1048 | * property value is valid if it is sharenfs. | |
1049 | */ | |
1050 | if ((prop == ZFS_PROP_SHARENFS || | |
1051 | prop == ZFS_PROP_SHARESMB) && | |
1052 | strcmp(strval, "on") != 0 && | |
1053 | strcmp(strval, "off") != 0) { | |
1054 | zfs_share_proto_t proto; | |
1055 | ||
1056 | if (prop == ZFS_PROP_SHARESMB) | |
1057 | proto = PROTO_SMB; | |
1058 | else | |
1059 | proto = PROTO_NFS; | |
1060 | ||
1061 | /* | |
1062 | * Must be an valid sharing protocol | |
1063 | * option string so init the libshare | |
1064 | * in order to enable the parser and | |
1065 | * then parse the options. We use the | |
1066 | * control API since we don't care about | |
1067 | * the current configuration and don't | |
1068 | * want the overhead of loading it | |
1069 | * until we actually do something. | |
1070 | */ | |
1071 | ||
1072 | if (zfs_init_libshare(hdl, | |
1073 | SA_INIT_CONTROL_API) != SA_OK) { | |
1074 | /* | |
1075 | * An error occurred so we can't do | |
1076 | * anything | |
1077 | */ | |
1078 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1079 | "'%s' cannot be set: problem " | |
1080 | "in share initialization"), | |
1081 | propname); | |
1082 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1083 | errbuf); | |
1084 | goto error; | |
1085 | } | |
1086 | ||
1087 | if (zfs_parse_options(strval, proto) != SA_OK) { | |
1088 | /* | |
1089 | * There was an error in parsing so | |
1090 | * deal with it by issuing an error | |
1091 | * message and leaving after | |
1092 | * uninitializing the the libshare | |
1093 | * interface. | |
1094 | */ | |
1095 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1096 | "'%s' cannot be set to invalid " | |
1097 | "options"), propname); | |
1098 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1099 | errbuf); | |
1100 | zfs_uninit_libshare(hdl); | |
1101 | goto error; | |
1102 | } | |
1103 | zfs_uninit_libshare(hdl); | |
1104 | } | |
1105 | ||
1106 | break; | |
1107 | case ZFS_PROP_UTF8ONLY: | |
1108 | chosen_utf = (int)intval; | |
1109 | break; | |
1110 | case ZFS_PROP_NORMALIZE: | |
1111 | chosen_normal = (int)intval; | |
1112 | break; | |
e75c13c3 BB |
1113 | default: |
1114 | break; | |
34dc7c2f BB |
1115 | } |
1116 | ||
1117 | /* | |
1118 | * For changes to existing volumes, we have some additional | |
1119 | * checks to enforce. | |
1120 | */ | |
1121 | if (type == ZFS_TYPE_VOLUME && zhp != NULL) { | |
1122 | uint64_t volsize = zfs_prop_get_int(zhp, | |
1123 | ZFS_PROP_VOLSIZE); | |
1124 | uint64_t blocksize = zfs_prop_get_int(zhp, | |
1125 | ZFS_PROP_VOLBLOCKSIZE); | |
1126 | char buf[64]; | |
1127 | ||
1128 | switch (prop) { | |
1129 | case ZFS_PROP_RESERVATION: | |
1130 | case ZFS_PROP_REFRESERVATION: | |
1131 | if (intval > volsize) { | |
1132 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1133 | "'%s' is greater than current " | |
1134 | "volume size"), propname); | |
1135 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1136 | errbuf); | |
1137 | goto error; | |
1138 | } | |
1139 | break; | |
1140 | ||
1141 | case ZFS_PROP_VOLSIZE: | |
1142 | if (intval % blocksize != 0) { | |
1143 | zfs_nicenum(blocksize, buf, | |
1144 | sizeof (buf)); | |
1145 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1146 | "'%s' must be a multiple of " | |
1147 | "volume block size (%s)"), | |
1148 | propname, buf); | |
1149 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1150 | errbuf); | |
1151 | goto error; | |
1152 | } | |
1153 | ||
1154 | if (intval == 0) { | |
1155 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1156 | "'%s' cannot be zero"), | |
1157 | propname); | |
1158 | (void) zfs_error(hdl, EZFS_BADPROP, | |
1159 | errbuf); | |
1160 | goto error; | |
1161 | } | |
1162 | break; | |
e75c13c3 BB |
1163 | default: |
1164 | break; | |
34dc7c2f BB |
1165 | } |
1166 | } | |
1167 | } | |
1168 | ||
1169 | /* | |
1170 | * If normalization was chosen, but no UTF8 choice was made, | |
1171 | * enforce rejection of non-UTF8 names. | |
1172 | * | |
1173 | * If normalization was chosen, but rejecting non-UTF8 names | |
1174 | * was explicitly not chosen, it is an error. | |
1175 | */ | |
1176 | if (chosen_normal > 0 && chosen_utf < 0) { | |
1177 | if (nvlist_add_uint64(ret, | |
1178 | zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) { | |
1179 | (void) no_memory(hdl); | |
1180 | goto error; | |
1181 | } | |
1182 | } else if (chosen_normal > 0 && chosen_utf == 0) { | |
1183 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1184 | "'%s' must be set 'on' if normalization chosen"), | |
1185 | zfs_prop_to_name(ZFS_PROP_UTF8ONLY)); | |
1186 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
1187 | goto error; | |
1188 | } | |
572e2857 BB |
1189 | return (ret); |
1190 | ||
1191 | error: | |
1192 | nvlist_free(ret); | |
1193 | return (NULL); | |
1194 | } | |
1195 | ||
1196 | int | |
1197 | zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) | |
1198 | { | |
1199 | uint64_t old_volsize; | |
1200 | uint64_t new_volsize; | |
1201 | uint64_t old_reservation; | |
1202 | uint64_t new_reservation; | |
1203 | zfs_prop_t resv_prop; | |
34dc7c2f BB |
1204 | |
1205 | /* | |
1206 | * If this is an existing volume, and someone is setting the volsize, | |
1207 | * make sure that it matches the reservation, or add it if necessary. | |
1208 | */ | |
572e2857 BB |
1209 | old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); |
1210 | if (zfs_which_resv_prop(zhp, &resv_prop) < 0) | |
1211 | return (-1); | |
1212 | old_reservation = zfs_prop_get_int(zhp, resv_prop); | |
1213 | if ((zvol_volsize_to_reservation(old_volsize, zhp->zfs_props) != | |
1214 | old_reservation) || nvlist_lookup_uint64(nvl, | |
1215 | zfs_prop_to_name(resv_prop), &new_reservation) != ENOENT) { | |
1216 | return (0); | |
34dc7c2f | 1217 | } |
572e2857 BB |
1218 | if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), |
1219 | &new_volsize) != 0) | |
1220 | return (-1); | |
1221 | new_reservation = zvol_volsize_to_reservation(new_volsize, | |
1222 | zhp->zfs_props); | |
1223 | if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), | |
1224 | new_reservation) != 0) { | |
1225 | (void) no_memory(zhp->zfs_hdl); | |
1226 | return (-1); | |
1227 | } | |
1228 | return (1); | |
34dc7c2f BB |
1229 | } |
1230 | ||
428870ff BB |
1231 | void |
1232 | zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, | |
1233 | char *errbuf) | |
1234 | { | |
1235 | switch (err) { | |
1236 | ||
1237 | case ENOSPC: | |
1238 | /* | |
1239 | * For quotas and reservations, ENOSPC indicates | |
1240 | * something different; setting a quota or reservation | |
1241 | * doesn't use any disk space. | |
1242 | */ | |
1243 | switch (prop) { | |
1244 | case ZFS_PROP_QUOTA: | |
1245 | case ZFS_PROP_REFQUOTA: | |
1246 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1247 | "size is less than current used or " | |
1248 | "reserved space")); | |
1249 | (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); | |
1250 | break; | |
1251 | ||
1252 | case ZFS_PROP_RESERVATION: | |
1253 | case ZFS_PROP_REFRESERVATION: | |
1254 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1255 | "size is greater than available space")); | |
1256 | (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); | |
1257 | break; | |
1258 | ||
1259 | default: | |
1260 | (void) zfs_standard_error(hdl, err, errbuf); | |
1261 | break; | |
1262 | } | |
1263 | break; | |
1264 | ||
1265 | case EBUSY: | |
1266 | (void) zfs_standard_error(hdl, EBUSY, errbuf); | |
1267 | break; | |
1268 | ||
1269 | case EROFS: | |
1270 | (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); | |
1271 | break; | |
1272 | ||
1273 | case ENOTSUP: | |
1274 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1275 | "pool and or dataset must be upgraded to set this " | |
1276 | "property or value")); | |
1277 | (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); | |
1278 | break; | |
1279 | ||
1280 | case ERANGE: | |
1281 | if (prop == ZFS_PROP_COMPRESSION) { | |
1282 | (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1283 | "property setting is not allowed on " | |
1284 | "bootable datasets")); | |
1285 | (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); | |
1286 | } else { | |
1287 | (void) zfs_standard_error(hdl, err, errbuf); | |
1288 | } | |
1289 | break; | |
1290 | ||
1291 | case EINVAL: | |
1292 | if (prop == ZPROP_INVAL) { | |
1293 | (void) zfs_error(hdl, EZFS_BADPROP, errbuf); | |
1294 | } else { | |
1295 | (void) zfs_standard_error(hdl, err, errbuf); | |
1296 | } | |
1297 | break; | |
1298 | ||
1299 | case EOVERFLOW: | |
1300 | /* | |
1301 | * This platform can't address a volume this big. | |
1302 | */ | |
1303 | #ifdef _ILP32 | |
1304 | if (prop == ZFS_PROP_VOLSIZE) { | |
1305 | (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); | |
1306 | break; | |
1307 | } | |
1308 | #endif | |
1309 | /* FALLTHROUGH */ | |
1310 | default: | |
1311 | (void) zfs_standard_error(hdl, err, errbuf); | |
1312 | } | |
1313 | } | |
1314 | ||
34dc7c2f BB |
1315 | /* |
1316 | * Given a property name and value, set the property for the given dataset. | |
1317 | */ | |
1318 | int | |
1319 | zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) | |
1320 | { | |
2598c001 | 1321 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1322 | int ret = -1; |
1323 | prop_changelist_t *cl = NULL; | |
1324 | char errbuf[1024]; | |
1325 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
1326 | nvlist_t *nvl = NULL, *realprops; | |
1327 | zfs_prop_t prop; | |
b128c09f BB |
1328 | boolean_t do_prefix; |
1329 | uint64_t idx; | |
d4ed6673 | 1330 | int added_resv = 0; |
34dc7c2f BB |
1331 | |
1332 | (void) snprintf(errbuf, sizeof (errbuf), | |
1333 | dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), | |
1334 | zhp->zfs_name); | |
1335 | ||
1336 | if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 || | |
1337 | nvlist_add_string(nvl, propname, propval) != 0) { | |
1338 | (void) no_memory(hdl); | |
1339 | goto error; | |
1340 | } | |
1341 | ||
b128c09f | 1342 | if ((realprops = zfs_valid_proplist(hdl, zhp->zfs_type, nvl, |
34dc7c2f BB |
1343 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL) |
1344 | goto error; | |
1345 | ||
1346 | nvlist_free(nvl); | |
1347 | nvl = realprops; | |
1348 | ||
1349 | prop = zfs_name_to_prop(propname); | |
1350 | ||
572e2857 BB |
1351 | if (prop == ZFS_PROP_VOLSIZE) { |
1352 | if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) | |
1353 | goto error; | |
1354 | } | |
1355 | ||
b128c09f | 1356 | if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) |
34dc7c2f BB |
1357 | goto error; |
1358 | ||
1359 | if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { | |
1360 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1361 | "child dataset with inherited mountpoint is used " | |
1362 | "in a non-global zone")); | |
1363 | ret = zfs_error(hdl, EZFS_ZONED, errbuf); | |
1364 | goto error; | |
1365 | } | |
1366 | ||
b128c09f BB |
1367 | /* |
1368 | * If the dataset's canmount property is being set to noauto, | |
1369 | * then we want to prevent unmounting & remounting it. | |
1370 | */ | |
1371 | do_prefix = !((prop == ZFS_PROP_CANMOUNT) && | |
1372 | (zprop_string_to_index(prop, propval, &idx, | |
1373 | ZFS_TYPE_DATASET) == 0) && (idx == ZFS_CANMOUNT_NOAUTO)); | |
34dc7c2f BB |
1374 | |
1375 | if (do_prefix && (ret = changelist_prefix(cl)) != 0) | |
b128c09f | 1376 | goto error; |
34dc7c2f BB |
1377 | |
1378 | /* | |
1379 | * Execute the corresponding ioctl() to set this property. | |
1380 | */ | |
1381 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1382 | ||
1383 | if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) | |
1384 | goto error; | |
1385 | ||
1386 | ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); | |
9babb374 | 1387 | |
34dc7c2f | 1388 | if (ret != 0) { |
428870ff | 1389 | zfs_setprop_error(hdl, prop, errno, errbuf); |
572e2857 BB |
1390 | if (added_resv && errno == ENOSPC) { |
1391 | /* clean up the volsize property we tried to set */ | |
1392 | uint64_t old_volsize = zfs_prop_get_int(zhp, | |
1393 | ZFS_PROP_VOLSIZE); | |
1394 | nvlist_free(nvl); | |
1395 | zcmd_free_nvlists(&zc); | |
1396 | if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) | |
1397 | goto error; | |
1398 | if (nvlist_add_uint64(nvl, | |
1399 | zfs_prop_to_name(ZFS_PROP_VOLSIZE), | |
1400 | old_volsize) != 0) | |
1401 | goto error; | |
1402 | if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) | |
1403 | goto error; | |
1404 | (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); | |
1405 | } | |
34dc7c2f BB |
1406 | } else { |
1407 | if (do_prefix) | |
1408 | ret = changelist_postfix(cl); | |
1409 | ||
1410 | /* | |
1411 | * Refresh the statistics so the new property value | |
1412 | * is reflected. | |
1413 | */ | |
1414 | if (ret == 0) | |
1415 | (void) get_stats(zhp); | |
1416 | } | |
1417 | ||
1418 | error: | |
1419 | nvlist_free(nvl); | |
1420 | zcmd_free_nvlists(&zc); | |
1421 | if (cl) | |
1422 | changelist_free(cl); | |
1423 | return (ret); | |
1424 | } | |
1425 | ||
1426 | /* | |
428870ff BB |
1427 | * Given a property, inherit the value from the parent dataset, or if received |
1428 | * is TRUE, revert to the received value, if any. | |
34dc7c2f BB |
1429 | */ |
1430 | int | |
428870ff | 1431 | zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) |
34dc7c2f | 1432 | { |
2598c001 | 1433 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1434 | int ret; |
1435 | prop_changelist_t *cl; | |
1436 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
1437 | char errbuf[1024]; | |
1438 | zfs_prop_t prop; | |
1439 | ||
1440 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
1441 | "cannot inherit %s for '%s'"), propname, zhp->zfs_name); | |
1442 | ||
428870ff | 1443 | zc.zc_cookie = received; |
34dc7c2f BB |
1444 | if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { |
1445 | /* | |
1446 | * For user properties, the amount of work we have to do is very | |
1447 | * small, so just do it here. | |
1448 | */ | |
1449 | if (!zfs_prop_user(propname)) { | |
1450 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1451 | "invalid property")); | |
1452 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
1453 | } | |
1454 | ||
1455 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1456 | (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); | |
1457 | ||
1458 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0) | |
1459 | return (zfs_standard_error(hdl, errno, errbuf)); | |
1460 | ||
1461 | return (0); | |
1462 | } | |
1463 | ||
1464 | /* | |
1465 | * Verify that this property is inheritable. | |
1466 | */ | |
1467 | if (zfs_prop_readonly(prop)) | |
1468 | return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); | |
1469 | ||
428870ff | 1470 | if (!zfs_prop_inheritable(prop) && !received) |
34dc7c2f BB |
1471 | return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); |
1472 | ||
1473 | /* | |
1474 | * Check to see if the value applies to this type | |
1475 | */ | |
1476 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) | |
1477 | return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); | |
1478 | ||
1479 | /* | |
572e2857 | 1480 | * Normalize the name, to get rid of shorthand abbreviations. |
34dc7c2f BB |
1481 | */ |
1482 | propname = zfs_prop_to_name(prop); | |
1483 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1484 | (void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value)); | |
1485 | ||
1486 | if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID && | |
1487 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { | |
1488 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1489 | "dataset is used in a non-global zone")); | |
1490 | return (zfs_error(hdl, EZFS_ZONED, errbuf)); | |
1491 | } | |
1492 | ||
1493 | /* | |
1494 | * Determine datasets which will be affected by this change, if any. | |
1495 | */ | |
b128c09f | 1496 | if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) |
34dc7c2f BB |
1497 | return (-1); |
1498 | ||
1499 | if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) { | |
1500 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
1501 | "child dataset with inherited mountpoint is used " | |
1502 | "in a non-global zone")); | |
1503 | ret = zfs_error(hdl, EZFS_ZONED, errbuf); | |
1504 | goto error; | |
1505 | } | |
1506 | ||
1507 | if ((ret = changelist_prefix(cl)) != 0) | |
1508 | goto error; | |
1509 | ||
1510 | if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) { | |
1511 | return (zfs_standard_error(hdl, errno, errbuf)); | |
1512 | } else { | |
1513 | ||
1514 | if ((ret = changelist_postfix(cl)) != 0) | |
1515 | goto error; | |
1516 | ||
1517 | /* | |
1518 | * Refresh the statistics so the new property is reflected. | |
1519 | */ | |
1520 | (void) get_stats(zhp); | |
1521 | } | |
1522 | ||
1523 | error: | |
1524 | changelist_free(cl); | |
1525 | return (ret); | |
1526 | } | |
1527 | ||
1528 | /* | |
1529 | * True DSL properties are stored in an nvlist. The following two functions | |
1530 | * extract them appropriately. | |
1531 | */ | |
1532 | static uint64_t | |
1533 | getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) | |
1534 | { | |
1535 | nvlist_t *nv; | |
1536 | uint64_t value; | |
1537 | ||
1538 | *source = NULL; | |
1539 | if (nvlist_lookup_nvlist(zhp->zfs_props, | |
1540 | zfs_prop_to_name(prop), &nv) == 0) { | |
1541 | verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); | |
1542 | (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); | |
1543 | } else { | |
9babb374 BB |
1544 | verify(!zhp->zfs_props_table || |
1545 | zhp->zfs_props_table[prop] == B_TRUE); | |
34dc7c2f BB |
1546 | value = zfs_prop_default_numeric(prop); |
1547 | *source = ""; | |
1548 | } | |
1549 | ||
1550 | return (value); | |
1551 | } | |
1552 | ||
1553 | static char * | |
1554 | getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) | |
1555 | { | |
1556 | nvlist_t *nv; | |
1557 | char *value; | |
1558 | ||
1559 | *source = NULL; | |
1560 | if (nvlist_lookup_nvlist(zhp->zfs_props, | |
1561 | zfs_prop_to_name(prop), &nv) == 0) { | |
1562 | verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); | |
1563 | (void) nvlist_lookup_string(nv, ZPROP_SOURCE, source); | |
1564 | } else { | |
9babb374 BB |
1565 | verify(!zhp->zfs_props_table || |
1566 | zhp->zfs_props_table[prop] == B_TRUE); | |
34dc7c2f BB |
1567 | if ((value = (char *)zfs_prop_default_string(prop)) == NULL) |
1568 | value = ""; | |
1569 | *source = ""; | |
1570 | } | |
1571 | ||
1572 | return (value); | |
1573 | } | |
1574 | ||
428870ff BB |
1575 | static boolean_t |
1576 | zfs_is_recvd_props_mode(zfs_handle_t *zhp) | |
1577 | { | |
1578 | return (zhp->zfs_props == zhp->zfs_recvd_props); | |
1579 | } | |
1580 | ||
1581 | static void | |
1582 | zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) | |
1583 | { | |
1584 | *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; | |
1585 | zhp->zfs_props = zhp->zfs_recvd_props; | |
1586 | } | |
1587 | ||
1588 | static void | |
1589 | zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) | |
1590 | { | |
1591 | zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; | |
1592 | *cookie = 0; | |
1593 | } | |
1594 | ||
34dc7c2f BB |
1595 | /* |
1596 | * Internal function for getting a numeric property. Both zfs_prop_get() and | |
1597 | * zfs_prop_get_int() are built using this interface. | |
1598 | * | |
1599 | * Certain properties can be overridden using 'mount -o'. In this case, scan | |
1600 | * the contents of the /etc/mnttab entry, searching for the appropriate options. | |
1601 | * If they differ from the on-disk values, report the current values and mark | |
1602 | * the source "temporary". | |
1603 | */ | |
1604 | static int | |
1605 | get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, | |
1606 | char **source, uint64_t *val) | |
1607 | { | |
2598c001 | 1608 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
1609 | nvlist_t *zplprops = NULL; |
1610 | struct mnttab mnt; | |
1611 | char *mntopt_on = NULL; | |
1612 | char *mntopt_off = NULL; | |
428870ff | 1613 | boolean_t received = zfs_is_recvd_props_mode(zhp); |
34dc7c2f BB |
1614 | |
1615 | *source = NULL; | |
1616 | ||
1617 | switch (prop) { | |
1618 | case ZFS_PROP_ATIME: | |
1619 | mntopt_on = MNTOPT_ATIME; | |
1620 | mntopt_off = MNTOPT_NOATIME; | |
1621 | break; | |
1622 | ||
1623 | case ZFS_PROP_DEVICES: | |
1624 | mntopt_on = MNTOPT_DEVICES; | |
1625 | mntopt_off = MNTOPT_NODEVICES; | |
1626 | break; | |
1627 | ||
1628 | case ZFS_PROP_EXEC: | |
1629 | mntopt_on = MNTOPT_EXEC; | |
1630 | mntopt_off = MNTOPT_NOEXEC; | |
1631 | break; | |
1632 | ||
1633 | case ZFS_PROP_READONLY: | |
1634 | mntopt_on = MNTOPT_RO; | |
1635 | mntopt_off = MNTOPT_RW; | |
1636 | break; | |
1637 | ||
1638 | case ZFS_PROP_SETUID: | |
1639 | mntopt_on = MNTOPT_SETUID; | |
1640 | mntopt_off = MNTOPT_NOSETUID; | |
1641 | break; | |
1642 | ||
1643 | case ZFS_PROP_XATTR: | |
1644 | mntopt_on = MNTOPT_XATTR; | |
1645 | mntopt_off = MNTOPT_NOXATTR; | |
1646 | break; | |
1647 | ||
1648 | case ZFS_PROP_NBMAND: | |
1649 | mntopt_on = MNTOPT_NBMAND; | |
1650 | mntopt_off = MNTOPT_NONBMAND; | |
1651 | break; | |
e75c13c3 BB |
1652 | default: |
1653 | break; | |
34dc7c2f BB |
1654 | } |
1655 | ||
1656 | /* | |
1657 | * Because looking up the mount options is potentially expensive | |
1658 | * (iterating over all of /etc/mnttab), we defer its calculation until | |
1659 | * we're looking up a property which requires its presence. | |
1660 | */ | |
1661 | if (!zhp->zfs_mntcheck && | |
1662 | (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) { | |
fb5f0bc8 BB |
1663 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
1664 | struct mnttab entry; | |
34dc7c2f | 1665 | |
fb5f0bc8 BB |
1666 | if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) { |
1667 | zhp->zfs_mntopts = zfs_strdup(hdl, | |
34dc7c2f BB |
1668 | entry.mnt_mntopts); |
1669 | if (zhp->zfs_mntopts == NULL) | |
1670 | return (-1); | |
1671 | } | |
1672 | ||
1673 | zhp->zfs_mntcheck = B_TRUE; | |
1674 | } | |
1675 | ||
1676 | if (zhp->zfs_mntopts == NULL) | |
1677 | mnt.mnt_mntopts = ""; | |
1678 | else | |
1679 | mnt.mnt_mntopts = zhp->zfs_mntopts; | |
1680 | ||
1681 | switch (prop) { | |
1682 | case ZFS_PROP_ATIME: | |
1683 | case ZFS_PROP_DEVICES: | |
1684 | case ZFS_PROP_EXEC: | |
1685 | case ZFS_PROP_READONLY: | |
1686 | case ZFS_PROP_SETUID: | |
1687 | case ZFS_PROP_XATTR: | |
1688 | case ZFS_PROP_NBMAND: | |
1689 | *val = getprop_uint64(zhp, prop, source); | |
1690 | ||
428870ff BB |
1691 | if (received) |
1692 | break; | |
1693 | ||
34dc7c2f BB |
1694 | if (hasmntopt(&mnt, mntopt_on) && !*val) { |
1695 | *val = B_TRUE; | |
1696 | if (src) | |
1697 | *src = ZPROP_SRC_TEMPORARY; | |
1698 | } else if (hasmntopt(&mnt, mntopt_off) && *val) { | |
1699 | *val = B_FALSE; | |
1700 | if (src) | |
1701 | *src = ZPROP_SRC_TEMPORARY; | |
1702 | } | |
1703 | break; | |
1704 | ||
1705 | case ZFS_PROP_CANMOUNT: | |
428870ff | 1706 | case ZFS_PROP_VOLSIZE: |
34dc7c2f BB |
1707 | case ZFS_PROP_QUOTA: |
1708 | case ZFS_PROP_REFQUOTA: | |
1709 | case ZFS_PROP_RESERVATION: | |
1710 | case ZFS_PROP_REFRESERVATION: | |
1711 | *val = getprop_uint64(zhp, prop, source); | |
428870ff BB |
1712 | |
1713 | if (*source == NULL) { | |
1714 | /* not default, must be local */ | |
34dc7c2f | 1715 | *source = zhp->zfs_name; |
428870ff | 1716 | } |
34dc7c2f BB |
1717 | break; |
1718 | ||
1719 | case ZFS_PROP_MOUNTED: | |
1720 | *val = (zhp->zfs_mntopts != NULL); | |
1721 | break; | |
1722 | ||
1723 | case ZFS_PROP_NUMCLONES: | |
1724 | *val = zhp->zfs_dmustats.dds_num_clones; | |
1725 | break; | |
1726 | ||
1727 | case ZFS_PROP_VERSION: | |
1728 | case ZFS_PROP_NORMALIZE: | |
1729 | case ZFS_PROP_UTF8ONLY: | |
1730 | case ZFS_PROP_CASE: | |
1731 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) || | |
1732 | zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) | |
1733 | return (-1); | |
1734 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
1735 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { | |
1736 | zcmd_free_nvlists(&zc); | |
45d1cae3 | 1737 | return (-1); |
34dc7c2f BB |
1738 | } |
1739 | if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || | |
1740 | nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), | |
1741 | val) != 0) { | |
1742 | zcmd_free_nvlists(&zc); | |
45d1cae3 | 1743 | return (-1); |
34dc7c2f BB |
1744 | } |
1745 | if (zplprops) | |
1746 | nvlist_free(zplprops); | |
1747 | zcmd_free_nvlists(&zc); | |
1748 | break; | |
1749 | ||
1750 | default: | |
1751 | switch (zfs_prop_get_type(prop)) { | |
1752 | case PROP_TYPE_NUMBER: | |
1753 | case PROP_TYPE_INDEX: | |
1754 | *val = getprop_uint64(zhp, prop, source); | |
b128c09f | 1755 | /* |
9babb374 | 1756 | * If we tried to use a default value for a |
b128c09f | 1757 | * readonly property, it means that it was not |
428870ff | 1758 | * present. |
b128c09f BB |
1759 | */ |
1760 | if (zfs_prop_readonly(prop) && | |
428870ff BB |
1761 | *source != NULL && (*source)[0] == '\0') { |
1762 | *source = NULL; | |
b128c09f | 1763 | } |
34dc7c2f BB |
1764 | break; |
1765 | ||
1766 | case PROP_TYPE_STRING: | |
1767 | default: | |
1768 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
1769 | "cannot get non-numeric property")); | |
1770 | return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP, | |
1771 | dgettext(TEXT_DOMAIN, "internal error"))); | |
1772 | } | |
1773 | } | |
1774 | ||
1775 | return (0); | |
1776 | } | |
1777 | ||
1778 | /* | |
1779 | * Calculate the source type, given the raw source string. | |
1780 | */ | |
1781 | static void | |
1782 | get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, | |
1783 | char *statbuf, size_t statlen) | |
1784 | { | |
1785 | if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY) | |
1786 | return; | |
1787 | ||
1788 | if (source == NULL) { | |
1789 | *srctype = ZPROP_SRC_NONE; | |
1790 | } else if (source[0] == '\0') { | |
1791 | *srctype = ZPROP_SRC_DEFAULT; | |
428870ff BB |
1792 | } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { |
1793 | *srctype = ZPROP_SRC_RECEIVED; | |
34dc7c2f BB |
1794 | } else { |
1795 | if (strcmp(source, zhp->zfs_name) == 0) { | |
1796 | *srctype = ZPROP_SRC_LOCAL; | |
1797 | } else { | |
1798 | (void) strlcpy(statbuf, source, statlen); | |
1799 | *srctype = ZPROP_SRC_INHERITED; | |
1800 | } | |
1801 | } | |
1802 | ||
1803 | } | |
1804 | ||
428870ff BB |
1805 | int |
1806 | zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, | |
1807 | size_t proplen, boolean_t literal) | |
1808 | { | |
1809 | zfs_prop_t prop; | |
1810 | int err = 0; | |
1811 | ||
1812 | if (zhp->zfs_recvd_props == NULL) | |
1813 | if (get_recvd_props_ioctl(zhp) != 0) | |
1814 | return (-1); | |
1815 | ||
1816 | prop = zfs_name_to_prop(propname); | |
1817 | ||
1818 | if (prop != ZPROP_INVAL) { | |
1819 | uint64_t cookie; | |
1820 | if (!nvlist_exists(zhp->zfs_recvd_props, propname)) | |
1821 | return (-1); | |
1822 | zfs_set_recvd_props_mode(zhp, &cookie); | |
1823 | err = zfs_prop_get(zhp, prop, propbuf, proplen, | |
1824 | NULL, NULL, 0, literal); | |
1825 | zfs_unset_recvd_props_mode(zhp, &cookie); | |
1826 | } else if (zfs_prop_userquota(propname)) { | |
1827 | return (-1); | |
1828 | } else { | |
1829 | nvlist_t *propval; | |
1830 | char *recvdval; | |
1831 | if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, | |
1832 | propname, &propval) != 0) | |
1833 | return (-1); | |
1834 | verify(nvlist_lookup_string(propval, ZPROP_VALUE, | |
1835 | &recvdval) == 0); | |
1836 | (void) strlcpy(propbuf, recvdval, proplen); | |
1837 | } | |
1838 | ||
1839 | return (err == 0 ? 0 : -1); | |
1840 | } | |
1841 | ||
34dc7c2f BB |
1842 | /* |
1843 | * Retrieve a property from the given object. If 'literal' is specified, then | |
1844 | * numbers are left as exact values. Otherwise, numbers are converted to a | |
1845 | * human-readable form. | |
1846 | * | |
1847 | * Returns 0 on success, or -1 on error. | |
1848 | */ | |
1849 | int | |
1850 | zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, | |
1851 | zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal) | |
1852 | { | |
1853 | char *source = NULL; | |
1854 | uint64_t val; | |
1855 | char *str; | |
34dc7c2f | 1856 | const char *strval; |
428870ff | 1857 | boolean_t received = zfs_is_recvd_props_mode(zhp); |
34dc7c2f BB |
1858 | |
1859 | /* | |
1860 | * Check to see if this property applies to our object | |
1861 | */ | |
1862 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) | |
1863 | return (-1); | |
1864 | ||
428870ff BB |
1865 | if (received && zfs_prop_readonly(prop)) |
1866 | return (-1); | |
1867 | ||
34dc7c2f BB |
1868 | if (src) |
1869 | *src = ZPROP_SRC_NONE; | |
1870 | ||
1871 | switch (prop) { | |
1872 | case ZFS_PROP_CREATION: | |
1873 | /* | |
1874 | * 'creation' is a time_t stored in the statistics. We convert | |
1875 | * this into a string unless 'literal' is specified. | |
1876 | */ | |
1877 | { | |
1878 | val = getprop_uint64(zhp, prop, &source); | |
1879 | time_t time = (time_t)val; | |
1880 | struct tm t; | |
1881 | ||
1882 | if (literal || | |
1883 | localtime_r(&time, &t) == NULL || | |
1884 | strftime(propbuf, proplen, "%a %b %e %k:%M %Y", | |
1885 | &t) == 0) | |
b8864a23 | 1886 | (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t) val); |
34dc7c2f BB |
1887 | } |
1888 | break; | |
1889 | ||
1890 | case ZFS_PROP_MOUNTPOINT: | |
1891 | /* | |
1892 | * Getting the precise mountpoint can be tricky. | |
1893 | * | |
1894 | * - for 'none' or 'legacy', return those values. | |
34dc7c2f BB |
1895 | * - for inherited mountpoints, we want to take everything |
1896 | * after our ancestor and append it to the inherited value. | |
1897 | * | |
1898 | * If the pool has an alternate root, we want to prepend that | |
1899 | * root to any values we return. | |
1900 | */ | |
b128c09f | 1901 | |
34dc7c2f BB |
1902 | str = getprop_string(zhp, prop, &source); |
1903 | ||
b128c09f BB |
1904 | if (str[0] == '/') { |
1905 | char buf[MAXPATHLEN]; | |
1906 | char *root = buf; | |
428870ff | 1907 | const char *relpath; |
34dc7c2f | 1908 | |
428870ff BB |
1909 | /* |
1910 | * If we inherit the mountpoint, even from a dataset | |
1911 | * with a received value, the source will be the path of | |
1912 | * the dataset we inherit from. If source is | |
1913 | * ZPROP_SOURCE_VAL_RECVD, the received value is not | |
1914 | * inherited. | |
1915 | */ | |
1916 | if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { | |
1917 | relpath = ""; | |
1918 | } else { | |
1919 | relpath = zhp->zfs_name + strlen(source); | |
1920 | if (relpath[0] == '/') | |
1921 | relpath++; | |
1922 | } | |
b128c09f BB |
1923 | |
1924 | if ((zpool_get_prop(zhp->zpool_hdl, | |
1925 | ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL)) || | |
1926 | (strcmp(root, "-") == 0)) | |
1927 | root[0] = '\0'; | |
1928 | /* | |
1929 | * Special case an alternate root of '/'. This will | |
1930 | * avoid having multiple leading slashes in the | |
1931 | * mountpoint path. | |
1932 | */ | |
1933 | if (strcmp(root, "/") == 0) | |
1934 | root++; | |
1935 | ||
1936 | /* | |
1937 | * If the mountpoint is '/' then skip over this | |
1938 | * if we are obtaining either an alternate root or | |
1939 | * an inherited mountpoint. | |
1940 | */ | |
1941 | if (str[1] == '\0' && (root[0] != '\0' || | |
1942 | relpath[0] != '\0')) | |
34dc7c2f BB |
1943 | str++; |
1944 | ||
1945 | if (relpath[0] == '\0') | |
1946 | (void) snprintf(propbuf, proplen, "%s%s", | |
1947 | root, str); | |
1948 | else | |
1949 | (void) snprintf(propbuf, proplen, "%s%s%s%s", | |
1950 | root, str, relpath[0] == '@' ? "" : "/", | |
1951 | relpath); | |
1952 | } else { | |
1953 | /* 'legacy' or 'none' */ | |
1954 | (void) strlcpy(propbuf, str, proplen); | |
1955 | } | |
1956 | ||
1957 | break; | |
1958 | ||
1959 | case ZFS_PROP_ORIGIN: | |
1960 | (void) strlcpy(propbuf, getprop_string(zhp, prop, &source), | |
1961 | proplen); | |
1962 | /* | |
1963 | * If there is no parent at all, return failure to indicate that | |
1964 | * it doesn't apply to this dataset. | |
1965 | */ | |
1966 | if (propbuf[0] == '\0') | |
1967 | return (-1); | |
1968 | break; | |
1969 | ||
1970 | case ZFS_PROP_QUOTA: | |
1971 | case ZFS_PROP_REFQUOTA: | |
1972 | case ZFS_PROP_RESERVATION: | |
1973 | case ZFS_PROP_REFRESERVATION: | |
1974 | ||
1975 | if (get_numeric_property(zhp, prop, src, &source, &val) != 0) | |
1976 | return (-1); | |
1977 | ||
1978 | /* | |
1979 | * If quota or reservation is 0, we translate this into 'none' | |
1980 | * (unless literal is set), and indicate that it's the default | |
1981 | * value. Otherwise, we print the number nicely and indicate | |
1982 | * that its set locally. | |
1983 | */ | |
1984 | if (val == 0) { | |
1985 | if (literal) | |
1986 | (void) strlcpy(propbuf, "0", proplen); | |
1987 | else | |
1988 | (void) strlcpy(propbuf, "none", proplen); | |
1989 | } else { | |
1990 | if (literal) | |
1991 | (void) snprintf(propbuf, proplen, "%llu", | |
1992 | (u_longlong_t)val); | |
1993 | else | |
1994 | zfs_nicenum(val, propbuf, proplen); | |
1995 | } | |
1996 | break; | |
1997 | ||
1998 | case ZFS_PROP_COMPRESSRATIO: | |
1999 | if (get_numeric_property(zhp, prop, src, &source, &val) != 0) | |
2000 | return (-1); | |
428870ff BB |
2001 | (void) snprintf(propbuf, proplen, "%llu.%02llux", |
2002 | (u_longlong_t)(val / 100), | |
2003 | (u_longlong_t)(val % 100)); | |
34dc7c2f BB |
2004 | break; |
2005 | ||
2006 | case ZFS_PROP_TYPE: | |
2007 | switch (zhp->zfs_type) { | |
2008 | case ZFS_TYPE_FILESYSTEM: | |
2009 | str = "filesystem"; | |
2010 | break; | |
2011 | case ZFS_TYPE_VOLUME: | |
2012 | str = "volume"; | |
2013 | break; | |
2014 | case ZFS_TYPE_SNAPSHOT: | |
2015 | str = "snapshot"; | |
2016 | break; | |
2017 | default: | |
2018 | abort(); | |
2019 | } | |
2020 | (void) snprintf(propbuf, proplen, "%s", str); | |
2021 | break; | |
2022 | ||
2023 | case ZFS_PROP_MOUNTED: | |
2024 | /* | |
2025 | * The 'mounted' property is a pseudo-property that described | |
2026 | * whether the filesystem is currently mounted. Even though | |
2027 | * it's a boolean value, the typical values of "on" and "off" | |
2028 | * don't make sense, so we translate to "yes" and "no". | |
2029 | */ | |
2030 | if (get_numeric_property(zhp, ZFS_PROP_MOUNTED, | |
2031 | src, &source, &val) != 0) | |
2032 | return (-1); | |
2033 | if (val) | |
2034 | (void) strlcpy(propbuf, "yes", proplen); | |
2035 | else | |
2036 | (void) strlcpy(propbuf, "no", proplen); | |
2037 | break; | |
2038 | ||
2039 | case ZFS_PROP_NAME: | |
2040 | /* | |
2041 | * The 'name' property is a pseudo-property derived from the | |
2042 | * dataset name. It is presented as a real property to simplify | |
2043 | * consumers. | |
2044 | */ | |
2045 | (void) strlcpy(propbuf, zhp->zfs_name, proplen); | |
2046 | break; | |
2047 | ||
428870ff BB |
2048 | case ZFS_PROP_MLSLABEL: |
2049 | { | |
d2c15e84 | 2050 | #ifdef HAVE_MLSLABEL |
428870ff BB |
2051 | m_label_t *new_sl = NULL; |
2052 | char *ascii = NULL; /* human readable label */ | |
2053 | ||
2054 | (void) strlcpy(propbuf, | |
2055 | getprop_string(zhp, prop, &source), proplen); | |
2056 | ||
2057 | if (literal || (strcasecmp(propbuf, | |
2058 | ZFS_MLSLABEL_DEFAULT) == 0)) | |
2059 | break; | |
2060 | ||
2061 | /* | |
2062 | * Try to translate the internal hex string to | |
2063 | * human-readable output. If there are any | |
2064 | * problems just use the hex string. | |
2065 | */ | |
2066 | ||
2067 | if (str_to_label(propbuf, &new_sl, MAC_LABEL, | |
2068 | L_NO_CORRECTION, NULL) == -1) { | |
2069 | m_label_free(new_sl); | |
2070 | break; | |
2071 | } | |
2072 | ||
2073 | if (label_to_str(new_sl, &ascii, M_LABEL, | |
2074 | DEF_NAMES) != 0) { | |
2075 | if (ascii) | |
2076 | free(ascii); | |
2077 | m_label_free(new_sl); | |
2078 | break; | |
2079 | } | |
2080 | m_label_free(new_sl); | |
2081 | ||
2082 | (void) strlcpy(propbuf, ascii, proplen); | |
2083 | free(ascii); | |
d2c15e84 BB |
2084 | #else |
2085 | (void) strlcpy(propbuf, | |
2086 | getprop_string(zhp, prop, &source), proplen); | |
2087 | #endif /* HAVE_MLSLABEL */ | |
428870ff BB |
2088 | } |
2089 | break; | |
2090 | ||
34dc7c2f BB |
2091 | default: |
2092 | switch (zfs_prop_get_type(prop)) { | |
2093 | case PROP_TYPE_NUMBER: | |
2094 | if (get_numeric_property(zhp, prop, src, | |
2095 | &source, &val) != 0) | |
2096 | return (-1); | |
2097 | if (literal) | |
2098 | (void) snprintf(propbuf, proplen, "%llu", | |
2099 | (u_longlong_t)val); | |
2100 | else | |
2101 | zfs_nicenum(val, propbuf, proplen); | |
2102 | break; | |
2103 | ||
2104 | case PROP_TYPE_STRING: | |
2105 | (void) strlcpy(propbuf, | |
2106 | getprop_string(zhp, prop, &source), proplen); | |
2107 | break; | |
2108 | ||
2109 | case PROP_TYPE_INDEX: | |
2110 | if (get_numeric_property(zhp, prop, src, | |
2111 | &source, &val) != 0) | |
2112 | return (-1); | |
2113 | if (zfs_prop_index_to_string(prop, val, &strval) != 0) | |
2114 | return (-1); | |
2115 | (void) strlcpy(propbuf, strval, proplen); | |
2116 | break; | |
2117 | ||
2118 | default: | |
2119 | abort(); | |
2120 | } | |
2121 | } | |
2122 | ||
2123 | get_source(zhp, src, source, statbuf, statlen); | |
2124 | ||
2125 | return (0); | |
2126 | } | |
2127 | ||
2128 | /* | |
2129 | * Utility function to get the given numeric property. Does no validation that | |
2130 | * the given property is the appropriate type; should only be used with | |
2131 | * hard-coded property types. | |
2132 | */ | |
2133 | uint64_t | |
2134 | zfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop) | |
2135 | { | |
2136 | char *source; | |
2137 | uint64_t val; | |
2138 | ||
2139 | (void) get_numeric_property(zhp, prop, NULL, &source, &val); | |
2140 | ||
2141 | return (val); | |
2142 | } | |
2143 | ||
2144 | int | |
2145 | zfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val) | |
2146 | { | |
2147 | char buf[64]; | |
2148 | ||
9babb374 | 2149 | (void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val); |
34dc7c2f BB |
2150 | return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf)); |
2151 | } | |
2152 | ||
2153 | /* | |
2154 | * Similar to zfs_prop_get(), but returns the value as an integer. | |
2155 | */ | |
2156 | int | |
2157 | zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, | |
2158 | zprop_source_t *src, char *statbuf, size_t statlen) | |
2159 | { | |
2160 | char *source; | |
2161 | ||
2162 | /* | |
2163 | * Check to see if this property applies to our object | |
2164 | */ | |
2165 | if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) { | |
2166 | return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE, | |
2167 | dgettext(TEXT_DOMAIN, "cannot get property '%s'"), | |
2168 | zfs_prop_to_name(prop))); | |
2169 | } | |
2170 | ||
2171 | if (src) | |
2172 | *src = ZPROP_SRC_NONE; | |
2173 | ||
2174 | if (get_numeric_property(zhp, prop, src, &source, value) != 0) | |
2175 | return (-1); | |
2176 | ||
2177 | get_source(zhp, src, source, statbuf, statlen); | |
2178 | ||
2179 | return (0); | |
2180 | } | |
2181 | ||
be160928 | 2182 | #ifdef HAVE_IDMAP |
9babb374 BB |
2183 | static int |
2184 | idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, | |
2185 | char **domainp, idmap_rid_t *ridp) | |
2186 | { | |
9babb374 BB |
2187 | idmap_get_handle_t *get_hdl = NULL; |
2188 | idmap_stat status; | |
2189 | int err = EINVAL; | |
2190 | ||
572e2857 | 2191 | if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) |
9babb374 BB |
2192 | goto out; |
2193 | ||
2194 | if (isuser) { | |
2195 | err = idmap_get_sidbyuid(get_hdl, id, | |
2196 | IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); | |
2197 | } else { | |
2198 | err = idmap_get_sidbygid(get_hdl, id, | |
2199 | IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status); | |
2200 | } | |
2201 | if (err == IDMAP_SUCCESS && | |
2202 | idmap_get_mappings(get_hdl) == IDMAP_SUCCESS && | |
2203 | status == IDMAP_SUCCESS) | |
2204 | err = 0; | |
2205 | else | |
2206 | err = EINVAL; | |
2207 | out: | |
2208 | if (get_hdl) | |
2209 | idmap_get_destroy(get_hdl); | |
9babb374 BB |
2210 | return (err); |
2211 | } | |
be160928 | 2212 | #endif /* HAVE_IDMAP */ |
9babb374 BB |
2213 | |
2214 | /* | |
2215 | * convert the propname into parameters needed by kernel | |
2216 | * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 | |
2217 | * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 | |
2218 | */ | |
2219 | static int | |
2220 | userquota_propname_decode(const char *propname, boolean_t zoned, | |
2221 | zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) | |
2222 | { | |
2223 | zfs_userquota_prop_t type; | |
2224 | char *cp, *end; | |
45d1cae3 | 2225 | char *numericsid = NULL; |
9babb374 BB |
2226 | boolean_t isuser; |
2227 | ||
2228 | domain[0] = '\0'; | |
2229 | ||
2230 | /* Figure out the property type ({user|group}{quota|space}) */ | |
2231 | for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) { | |
2232 | if (strncmp(propname, zfs_userquota_prop_prefixes[type], | |
2233 | strlen(zfs_userquota_prop_prefixes[type])) == 0) | |
2234 | break; | |
2235 | } | |
2236 | if (type == ZFS_NUM_USERQUOTA_PROPS) | |
2237 | return (EINVAL); | |
2238 | *typep = type; | |
2239 | ||
2240 | isuser = (type == ZFS_PROP_USERQUOTA || | |
2241 | type == ZFS_PROP_USERUSED); | |
2242 | ||
2243 | cp = strchr(propname, '@') + 1; | |
2244 | ||
2245 | if (strchr(cp, '@')) { | |
be160928 | 2246 | #ifdef HAVE_IDMAP |
9babb374 BB |
2247 | /* |
2248 | * It's a SID name (eg "user@domain") that needs to be | |
45d1cae3 | 2249 | * turned into S-1-domainID-RID. |
9babb374 | 2250 | */ |
45d1cae3 | 2251 | directory_error_t e; |
9babb374 BB |
2252 | if (zoned && getzoneid() == GLOBAL_ZONEID) |
2253 | return (ENOENT); | |
45d1cae3 BB |
2254 | if (isuser) { |
2255 | e = directory_sid_from_user_name(NULL, | |
2256 | cp, &numericsid); | |
2257 | } else { | |
2258 | e = directory_sid_from_group_name(NULL, | |
2259 | cp, &numericsid); | |
2260 | } | |
2261 | if (e != NULL) { | |
2262 | directory_error_free(e); | |
9babb374 | 2263 | return (ENOENT); |
45d1cae3 BB |
2264 | } |
2265 | if (numericsid == NULL) | |
9babb374 | 2266 | return (ENOENT); |
45d1cae3 BB |
2267 | cp = numericsid; |
2268 | /* will be further decoded below */ | |
be160928 BB |
2269 | #else |
2270 | return (ENOSYS); | |
2271 | #endif /* HAVE_IDMAP */ | |
45d1cae3 BB |
2272 | } |
2273 | ||
2274 | if (strncmp(cp, "S-1-", 4) == 0) { | |
9babb374 | 2275 | /* It's a numeric SID (eg "S-1-234-567-89") */ |
45d1cae3 | 2276 | (void) strlcpy(domain, cp, domainlen); |
9babb374 BB |
2277 | cp = strrchr(domain, '-'); |
2278 | *cp = '\0'; | |
2279 | cp++; | |
2280 | ||
2281 | errno = 0; | |
2282 | *ridp = strtoull(cp, &end, 10); | |
45d1cae3 BB |
2283 | if (numericsid) { |
2284 | free(numericsid); | |
2285 | numericsid = NULL; | |
2286 | } | |
9babb374 BB |
2287 | if (errno != 0 || *end != '\0') |
2288 | return (EINVAL); | |
2289 | } else if (!isdigit(*cp)) { | |
2290 | /* | |
2291 | * It's a user/group name (eg "user") that needs to be | |
2292 | * turned into a uid/gid | |
2293 | */ | |
2294 | if (zoned && getzoneid() == GLOBAL_ZONEID) | |
2295 | return (ENOENT); | |
2296 | if (isuser) { | |
2297 | struct passwd *pw; | |
2298 | pw = getpwnam(cp); | |
2299 | if (pw == NULL) | |
2300 | return (ENOENT); | |
2301 | *ridp = pw->pw_uid; | |
2302 | } else { | |
2303 | struct group *gr; | |
2304 | gr = getgrnam(cp); | |
2305 | if (gr == NULL) | |
2306 | return (ENOENT); | |
2307 | *ridp = gr->gr_gid; | |
2308 | } | |
2309 | } else { | |
be160928 | 2310 | #ifdef HAVE_IDMAP |
9babb374 BB |
2311 | /* It's a user/group ID (eg "12345"). */ |
2312 | uid_t id = strtoul(cp, &end, 10); | |
2313 | idmap_rid_t rid; | |
2314 | char *mapdomain; | |
2315 | ||
2316 | if (*end != '\0') | |
2317 | return (EINVAL); | |
2318 | if (id > MAXUID) { | |
2319 | /* It's an ephemeral ID. */ | |
2320 | if (idmap_id_to_numeric_domain_rid(id, isuser, | |
2321 | &mapdomain, &rid) != 0) | |
2322 | return (ENOENT); | |
45d1cae3 | 2323 | (void) strlcpy(domain, mapdomain, domainlen); |
9babb374 BB |
2324 | *ridp = rid; |
2325 | } else { | |
2326 | *ridp = id; | |
2327 | } | |
be160928 BB |
2328 | #else |
2329 | return (ENOSYS); | |
2330 | #endif /* HAVE_IDMAP */ | |
9babb374 BB |
2331 | } |
2332 | ||
45d1cae3 | 2333 | ASSERT3P(numericsid, ==, NULL); |
9babb374 BB |
2334 | return (0); |
2335 | } | |
2336 | ||
2337 | static int | |
2338 | zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, | |
2339 | uint64_t *propvalue, zfs_userquota_prop_t *typep) | |
2340 | { | |
2341 | int err; | |
2598c001 | 2342 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
9babb374 BB |
2343 | |
2344 | (void) strncpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
2345 | ||
2346 | err = userquota_propname_decode(propname, | |
2347 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED), | |
2348 | typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid); | |
2349 | zc.zc_objset_type = *typep; | |
2350 | if (err) | |
2351 | return (err); | |
2352 | ||
2353 | err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc); | |
2354 | if (err) | |
2355 | return (err); | |
2356 | ||
2357 | *propvalue = zc.zc_cookie; | |
2358 | return (0); | |
2359 | } | |
2360 | ||
2361 | int | |
2362 | zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname, | |
2363 | uint64_t *propvalue) | |
2364 | { | |
2365 | zfs_userquota_prop_t type; | |
2366 | ||
2367 | return (zfs_prop_get_userquota_common(zhp, propname, propvalue, | |
2368 | &type)); | |
2369 | } | |
2370 | ||
2371 | int | |
2372 | zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, | |
2373 | char *propbuf, int proplen, boolean_t literal) | |
2374 | { | |
2375 | int err; | |
2376 | uint64_t propvalue; | |
2377 | zfs_userquota_prop_t type; | |
2378 | ||
2379 | err = zfs_prop_get_userquota_common(zhp, propname, &propvalue, | |
2380 | &type); | |
2381 | ||
2382 | if (err) | |
2383 | return (err); | |
2384 | ||
2385 | if (literal) { | |
b8864a23 BB |
2386 | (void) snprintf(propbuf, proplen, "%llu", |
2387 | (u_longlong_t)propvalue); | |
9babb374 BB |
2388 | } else if (propvalue == 0 && |
2389 | (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { | |
2390 | (void) strlcpy(propbuf, "none", proplen); | |
2391 | } else { | |
2392 | zfs_nicenum(propvalue, propbuf, proplen); | |
2393 | } | |
2394 | return (0); | |
2395 | } | |
2396 | ||
34dc7c2f BB |
2397 | /* |
2398 | * Returns the name of the given zfs handle. | |
2399 | */ | |
2400 | const char * | |
2401 | zfs_get_name(const zfs_handle_t *zhp) | |
2402 | { | |
2403 | return (zhp->zfs_name); | |
2404 | } | |
2405 | ||
2406 | /* | |
2407 | * Returns the type of the given zfs handle. | |
2408 | */ | |
2409 | zfs_type_t | |
2410 | zfs_get_type(const zfs_handle_t *zhp) | |
2411 | { | |
2412 | return (zhp->zfs_type); | |
2413 | } | |
2414 | ||
fb5f0bc8 BB |
2415 | static int |
2416 | zfs_do_list_ioctl(zfs_handle_t *zhp, int arg, zfs_cmd_t *zc) | |
2417 | { | |
2418 | int rc; | |
2419 | uint64_t orig_cookie; | |
2420 | ||
2421 | orig_cookie = zc->zc_cookie; | |
2422 | top: | |
2423 | (void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name)); | |
2424 | rc = ioctl(zhp->zfs_hdl->libzfs_fd, arg, zc); | |
2425 | ||
2426 | if (rc == -1) { | |
2427 | switch (errno) { | |
2428 | case ENOMEM: | |
2429 | /* expand nvlist memory and try again */ | |
2430 | if (zcmd_expand_dst_nvlist(zhp->zfs_hdl, zc) != 0) { | |
2431 | zcmd_free_nvlists(zc); | |
2432 | return (-1); | |
2433 | } | |
2434 | zc->zc_cookie = orig_cookie; | |
2435 | goto top; | |
2436 | /* | |
2437 | * An errno value of ESRCH indicates normal completion. | |
2438 | * If ENOENT is returned, then the underlying dataset | |
2439 | * has been removed since we obtained the handle. | |
2440 | */ | |
2441 | case ESRCH: | |
2442 | case ENOENT: | |
2443 | rc = 1; | |
2444 | break; | |
2445 | default: | |
2446 | rc = zfs_standard_error(zhp->zfs_hdl, errno, | |
2447 | dgettext(TEXT_DOMAIN, | |
2448 | "cannot iterate filesystems")); | |
2449 | break; | |
2450 | } | |
2451 | } | |
2452 | return (rc); | |
2453 | } | |
2454 | ||
34dc7c2f BB |
2455 | /* |
2456 | * Iterate over all child filesystems | |
2457 | */ | |
2458 | int | |
2459 | zfs_iter_filesystems(zfs_handle_t *zhp, zfs_iter_f func, void *data) | |
2460 | { | |
2598c001 | 2461 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2462 | zfs_handle_t *nzhp; |
2463 | int ret; | |
2464 | ||
2465 | if (zhp->zfs_type != ZFS_TYPE_FILESYSTEM) | |
2466 | return (0); | |
2467 | ||
fb5f0bc8 BB |
2468 | if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) |
2469 | return (-1); | |
2470 | ||
2471 | while ((ret = zfs_do_list_ioctl(zhp, ZFS_IOC_DATASET_LIST_NEXT, | |
2472 | &zc)) == 0) { | |
34dc7c2f BB |
2473 | /* |
2474 | * Silently ignore errors, as the only plausible explanation is | |
2475 | * that the pool has since been removed. | |
2476 | */ | |
fb5f0bc8 BB |
2477 | if ((nzhp = make_dataset_handle_zc(zhp->zfs_hdl, |
2478 | &zc)) == NULL) { | |
34dc7c2f | 2479 | continue; |
fb5f0bc8 | 2480 | } |
34dc7c2f | 2481 | |
fb5f0bc8 BB |
2482 | if ((ret = func(nzhp, data)) != 0) { |
2483 | zcmd_free_nvlists(&zc); | |
34dc7c2f | 2484 | return (ret); |
fb5f0bc8 | 2485 | } |
34dc7c2f | 2486 | } |
fb5f0bc8 BB |
2487 | zcmd_free_nvlists(&zc); |
2488 | return ((ret < 0) ? ret : 0); | |
34dc7c2f BB |
2489 | } |
2490 | ||
2491 | /* | |
2492 | * Iterate over all snapshots | |
2493 | */ | |
2494 | int | |
2495 | zfs_iter_snapshots(zfs_handle_t *zhp, zfs_iter_f func, void *data) | |
2496 | { | |
2598c001 | 2497 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2498 | zfs_handle_t *nzhp; |
2499 | int ret; | |
2500 | ||
2501 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) | |
2502 | return (0); | |
2503 | ||
fb5f0bc8 BB |
2504 | if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) |
2505 | return (-1); | |
2506 | while ((ret = zfs_do_list_ioctl(zhp, ZFS_IOC_SNAPSHOT_LIST_NEXT, | |
2507 | &zc)) == 0) { | |
34dc7c2f | 2508 | |
fb5f0bc8 BB |
2509 | if ((nzhp = make_dataset_handle_zc(zhp->zfs_hdl, |
2510 | &zc)) == NULL) { | |
34dc7c2f | 2511 | continue; |
fb5f0bc8 | 2512 | } |
34dc7c2f | 2513 | |
fb5f0bc8 BB |
2514 | if ((ret = func(nzhp, data)) != 0) { |
2515 | zcmd_free_nvlists(&zc); | |
34dc7c2f | 2516 | return (ret); |
fb5f0bc8 | 2517 | } |
34dc7c2f | 2518 | } |
fb5f0bc8 BB |
2519 | zcmd_free_nvlists(&zc); |
2520 | return ((ret < 0) ? ret : 0); | |
34dc7c2f BB |
2521 | } |
2522 | ||
2523 | /* | |
2524 | * Iterate over all children, snapshots and filesystems | |
2525 | */ | |
2526 | int | |
2527 | zfs_iter_children(zfs_handle_t *zhp, zfs_iter_f func, void *data) | |
2528 | { | |
2529 | int ret; | |
2530 | ||
2531 | if ((ret = zfs_iter_filesystems(zhp, func, data)) != 0) | |
2532 | return (ret); | |
2533 | ||
2534 | return (zfs_iter_snapshots(zhp, func, data)); | |
2535 | } | |
2536 | ||
428870ff BB |
2537 | /* |
2538 | * Is one dataset name a child dataset of another? | |
2539 | * | |
2540 | * Needs to handle these cases: | |
2541 | * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" | |
2542 | * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" | |
2543 | * Descendant? No. No. No. Yes. | |
2544 | */ | |
2545 | static boolean_t | |
2546 | is_descendant(const char *ds1, const char *ds2) | |
2547 | { | |
2548 | size_t d1len = strlen(ds1); | |
2549 | ||
2550 | /* ds2 can't be a descendant if it's smaller */ | |
2551 | if (strlen(ds2) < d1len) | |
2552 | return (B_FALSE); | |
2553 | ||
2554 | /* otherwise, compare strings and verify that there's a '/' char */ | |
2555 | return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); | |
2556 | } | |
2557 | ||
34dc7c2f BB |
2558 | /* |
2559 | * Given a complete name, return just the portion that refers to the parent. | |
2560 | * Can return NULL if this is a pool. | |
2561 | */ | |
2562 | static int | |
2563 | parent_name(const char *path, char *buf, size_t buflen) | |
2564 | { | |
2565 | char *loc; | |
2566 | ||
2567 | if ((loc = strrchr(path, '/')) == NULL) | |
2568 | return (-1); | |
2569 | ||
2570 | (void) strncpy(buf, path, MIN(buflen, loc - path)); | |
2571 | buf[loc - path] = '\0'; | |
2572 | ||
2573 | return (0); | |
2574 | } | |
2575 | ||
2576 | /* | |
2577 | * If accept_ancestor is false, then check to make sure that the given path has | |
2578 | * a parent, and that it exists. If accept_ancestor is true, then find the | |
2579 | * closest existing ancestor for the given path. In prefixlen return the | |
2580 | * length of already existing prefix of the given path. We also fetch the | |
2581 | * 'zoned' property, which is used to validate property settings when creating | |
2582 | * new datasets. | |
2583 | */ | |
2584 | static int | |
2585 | check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, | |
2586 | boolean_t accept_ancestor, int *prefixlen) | |
2587 | { | |
2598c001 | 2588 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2589 | char parent[ZFS_MAXNAMELEN]; |
2590 | char *slash; | |
2591 | zfs_handle_t *zhp; | |
2592 | char errbuf[1024]; | |
428870ff | 2593 | uint64_t is_zoned; |
34dc7c2f | 2594 | |
fb5f0bc8 BB |
2595 | (void) snprintf(errbuf, sizeof (errbuf), |
2596 | dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); | |
34dc7c2f BB |
2597 | |
2598 | /* get parent, and check to see if this is just a pool */ | |
2599 | if (parent_name(path, parent, sizeof (parent)) != 0) { | |
2600 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2601 | "missing dataset name")); | |
2602 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
2603 | } | |
2604 | ||
2605 | /* check to see if the pool exists */ | |
2606 | if ((slash = strchr(parent, '/')) == NULL) | |
2607 | slash = parent + strlen(parent); | |
2608 | (void) strncpy(zc.zc_name, parent, slash - parent); | |
2609 | zc.zc_name[slash - parent] = '\0'; | |
2610 | if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 && | |
2611 | errno == ENOENT) { | |
2612 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2613 | "no such pool '%s'"), zc.zc_name); | |
2614 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2615 | } | |
2616 | ||
2617 | /* check to see if the parent dataset exists */ | |
2618 | while ((zhp = make_dataset_handle(hdl, parent)) == NULL) { | |
2619 | if (errno == ENOENT && accept_ancestor) { | |
2620 | /* | |
2621 | * Go deeper to find an ancestor, give up on top level. | |
2622 | */ | |
2623 | if (parent_name(parent, parent, sizeof (parent)) != 0) { | |
2624 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2625 | "no such pool '%s'"), zc.zc_name); | |
2626 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2627 | } | |
2628 | } else if (errno == ENOENT) { | |
2629 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2630 | "parent does not exist")); | |
2631 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2632 | } else | |
2633 | return (zfs_standard_error(hdl, errno, errbuf)); | |
2634 | } | |
2635 | ||
428870ff BB |
2636 | is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); |
2637 | if (zoned != NULL) | |
2638 | *zoned = is_zoned; | |
2639 | ||
34dc7c2f | 2640 | /* we are in a non-global zone, but parent is in the global zone */ |
428870ff | 2641 | if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { |
34dc7c2f BB |
2642 | (void) zfs_standard_error(hdl, EPERM, errbuf); |
2643 | zfs_close(zhp); | |
2644 | return (-1); | |
2645 | } | |
2646 | ||
2647 | /* make sure parent is a filesystem */ | |
2648 | if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) { | |
2649 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2650 | "parent is not a filesystem")); | |
2651 | (void) zfs_error(hdl, EZFS_BADTYPE, errbuf); | |
2652 | zfs_close(zhp); | |
2653 | return (-1); | |
2654 | } | |
2655 | ||
2656 | zfs_close(zhp); | |
2657 | if (prefixlen != NULL) | |
2658 | *prefixlen = strlen(parent); | |
2659 | return (0); | |
2660 | } | |
2661 | ||
2662 | /* | |
2663 | * Finds whether the dataset of the given type(s) exists. | |
2664 | */ | |
2665 | boolean_t | |
2666 | zfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types) | |
2667 | { | |
2668 | zfs_handle_t *zhp; | |
2669 | ||
2670 | if (!zfs_validate_name(hdl, path, types, B_FALSE)) | |
2671 | return (B_FALSE); | |
2672 | ||
2673 | /* | |
2674 | * Try to get stats for the dataset, which will tell us if it exists. | |
2675 | */ | |
2676 | if ((zhp = make_dataset_handle(hdl, path)) != NULL) { | |
2677 | int ds_type = zhp->zfs_type; | |
2678 | ||
2679 | zfs_close(zhp); | |
2680 | if (types & ds_type) | |
2681 | return (B_TRUE); | |
2682 | } | |
2683 | return (B_FALSE); | |
2684 | } | |
2685 | ||
2686 | /* | |
2687 | * Given a path to 'target', create all the ancestors between | |
2688 | * the prefixlen portion of the path, and the target itself. | |
2689 | * Fail if the initial prefixlen-ancestor does not already exist. | |
2690 | */ | |
2691 | int | |
2692 | create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) | |
2693 | { | |
2694 | zfs_handle_t *h; | |
2695 | char *cp; | |
2696 | const char *opname; | |
2697 | ||
2698 | /* make sure prefix exists */ | |
2699 | cp = target + prefixlen; | |
2700 | if (*cp != '/') { | |
2701 | assert(strchr(cp, '/') == NULL); | |
2702 | h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); | |
2703 | } else { | |
2704 | *cp = '\0'; | |
2705 | h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); | |
2706 | *cp = '/'; | |
2707 | } | |
2708 | if (h == NULL) | |
2709 | return (-1); | |
2710 | zfs_close(h); | |
2711 | ||
2712 | /* | |
2713 | * Attempt to create, mount, and share any ancestor filesystems, | |
2714 | * up to the prefixlen-long one. | |
2715 | */ | |
2716 | for (cp = target + prefixlen + 1; | |
c65aa5b2 | 2717 | (cp = strchr(cp, '/')); *cp = '/', cp++) { |
34dc7c2f BB |
2718 | char *logstr; |
2719 | ||
2720 | *cp = '\0'; | |
2721 | ||
2722 | h = make_dataset_handle(hdl, target); | |
2723 | if (h) { | |
2724 | /* it already exists, nothing to do here */ | |
2725 | zfs_close(h); | |
2726 | continue; | |
2727 | } | |
2728 | ||
2729 | logstr = hdl->libzfs_log_str; | |
2730 | hdl->libzfs_log_str = NULL; | |
2731 | if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM, | |
2732 | NULL) != 0) { | |
2733 | hdl->libzfs_log_str = logstr; | |
2734 | opname = dgettext(TEXT_DOMAIN, "create"); | |
2735 | goto ancestorerr; | |
2736 | } | |
2737 | ||
2738 | hdl->libzfs_log_str = logstr; | |
2739 | h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM); | |
2740 | if (h == NULL) { | |
2741 | opname = dgettext(TEXT_DOMAIN, "open"); | |
2742 | goto ancestorerr; | |
2743 | } | |
2744 | ||
2745 | if (zfs_mount(h, NULL, 0) != 0) { | |
2746 | opname = dgettext(TEXT_DOMAIN, "mount"); | |
2747 | goto ancestorerr; | |
2748 | } | |
2749 | ||
2750 | if (zfs_share(h) != 0) { | |
2751 | opname = dgettext(TEXT_DOMAIN, "share"); | |
2752 | goto ancestorerr; | |
2753 | } | |
2754 | ||
2755 | zfs_close(h); | |
2756 | } | |
2757 | ||
2758 | return (0); | |
2759 | ||
2760 | ancestorerr: | |
2761 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2762 | "failed to %s ancestor '%s'"), opname, target); | |
2763 | return (-1); | |
2764 | } | |
2765 | ||
2766 | /* | |
2767 | * Creates non-existing ancestors of the given path. | |
2768 | */ | |
2769 | int | |
2770 | zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) | |
2771 | { | |
2772 | int prefix; | |
34dc7c2f | 2773 | char *path_copy; |
d4ed6673 | 2774 | int rc = 0; |
34dc7c2f | 2775 | |
428870ff | 2776 | if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) |
34dc7c2f BB |
2777 | return (-1); |
2778 | ||
2779 | if ((path_copy = strdup(path)) != NULL) { | |
2780 | rc = create_parents(hdl, path_copy, prefix); | |
2781 | free(path_copy); | |
2782 | } | |
2783 | if (path_copy == NULL || rc != 0) | |
2784 | return (-1); | |
2785 | ||
2786 | return (0); | |
2787 | } | |
2788 | ||
2789 | /* | |
2790 | * Create a new filesystem or volume. | |
2791 | */ | |
2792 | int | |
2793 | zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, | |
2794 | nvlist_t *props) | |
2795 | { | |
2598c001 | 2796 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2797 | int ret; |
2798 | uint64_t size = 0; | |
2799 | uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); | |
2800 | char errbuf[1024]; | |
2801 | uint64_t zoned; | |
2802 | ||
2803 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
2804 | "cannot create '%s'"), path); | |
2805 | ||
2806 | /* validate the path, taking care to note the extended error message */ | |
2807 | if (!zfs_validate_name(hdl, path, type, B_TRUE)) | |
2808 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
2809 | ||
2810 | /* validate parents exist */ | |
2811 | if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0) | |
2812 | return (-1); | |
2813 | ||
2814 | /* | |
2815 | * The failure modes when creating a dataset of a different type over | |
2816 | * one that already exists is a little strange. In particular, if you | |
2817 | * try to create a dataset on top of an existing dataset, the ioctl() | |
2818 | * will return ENOENT, not EEXIST. To prevent this from happening, we | |
2819 | * first try to see if the dataset exists. | |
2820 | */ | |
2821 | (void) strlcpy(zc.zc_name, path, sizeof (zc.zc_name)); | |
2822 | if (zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) { | |
2823 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2824 | "dataset already exists")); | |
2825 | return (zfs_error(hdl, EZFS_EXISTS, errbuf)); | |
2826 | } | |
2827 | ||
2828 | if (type == ZFS_TYPE_VOLUME) | |
2829 | zc.zc_objset_type = DMU_OST_ZVOL; | |
2830 | else | |
2831 | zc.zc_objset_type = DMU_OST_ZFS; | |
2832 | ||
b128c09f | 2833 | if (props && (props = zfs_valid_proplist(hdl, type, props, |
34dc7c2f BB |
2834 | zoned, NULL, errbuf)) == 0) |
2835 | return (-1); | |
2836 | ||
2837 | if (type == ZFS_TYPE_VOLUME) { | |
2838 | /* | |
2839 | * If we are creating a volume, the size and block size must | |
2840 | * satisfy a few restraints. First, the blocksize must be a | |
2841 | * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the | |
2842 | * volsize must be a multiple of the block size, and cannot be | |
2843 | * zero. | |
2844 | */ | |
2845 | if (props == NULL || nvlist_lookup_uint64(props, | |
2846 | zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) { | |
2847 | nvlist_free(props); | |
2848 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2849 | "missing volume size")); | |
2850 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
2851 | } | |
2852 | ||
2853 | if ((ret = nvlist_lookup_uint64(props, | |
2854 | zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), | |
2855 | &blocksize)) != 0) { | |
2856 | if (ret == ENOENT) { | |
2857 | blocksize = zfs_prop_default_numeric( | |
2858 | ZFS_PROP_VOLBLOCKSIZE); | |
2859 | } else { | |
2860 | nvlist_free(props); | |
2861 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2862 | "missing volume block size")); | |
2863 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
2864 | } | |
2865 | } | |
2866 | ||
2867 | if (size == 0) { | |
2868 | nvlist_free(props); | |
2869 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2870 | "volume size cannot be zero")); | |
2871 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
2872 | } | |
2873 | ||
2874 | if (size % blocksize != 0) { | |
2875 | nvlist_free(props); | |
2876 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2877 | "volume size must be a multiple of volume block " | |
2878 | "size")); | |
2879 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
2880 | } | |
2881 | } | |
2882 | ||
2883 | if (props && zcmd_write_src_nvlist(hdl, &zc, props) != 0) | |
2884 | return (-1); | |
2885 | nvlist_free(props); | |
2886 | ||
2887 | /* create the dataset */ | |
2888 | ret = zfs_ioctl(hdl, ZFS_IOC_CREATE, &zc); | |
2889 | ||
34dc7c2f BB |
2890 | zcmd_free_nvlists(&zc); |
2891 | ||
2892 | /* check for failure */ | |
2893 | if (ret != 0) { | |
2894 | char parent[ZFS_MAXNAMELEN]; | |
2895 | (void) parent_name(path, parent, sizeof (parent)); | |
2896 | ||
2897 | switch (errno) { | |
2898 | case ENOENT: | |
2899 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2900 | "no such parent '%s'"), parent); | |
2901 | return (zfs_error(hdl, EZFS_NOENT, errbuf)); | |
2902 | ||
2903 | case EINVAL: | |
2904 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2905 | "parent '%s' is not a filesystem"), parent); | |
2906 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
2907 | ||
2908 | case EDOM: | |
2909 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2910 | "volume block size must be power of 2 from " | |
2911 | "%u to %uk"), | |
2912 | (uint_t)SPA_MINBLOCKSIZE, | |
2913 | (uint_t)SPA_MAXBLOCKSIZE >> 10); | |
2914 | ||
2915 | return (zfs_error(hdl, EZFS_BADPROP, errbuf)); | |
2916 | ||
2917 | case ENOTSUP: | |
2918 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
2919 | "pool must be upgraded to set this " | |
2920 | "property or value")); | |
2921 | return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); | |
2922 | #ifdef _ILP32 | |
2923 | case EOVERFLOW: | |
2924 | /* | |
2925 | * This platform can't address a volume this big. | |
2926 | */ | |
2927 | if (type == ZFS_TYPE_VOLUME) | |
2928 | return (zfs_error(hdl, EZFS_VOLTOOBIG, | |
2929 | errbuf)); | |
2930 | #endif | |
2931 | /* FALLTHROUGH */ | |
2932 | default: | |
2933 | return (zfs_standard_error(hdl, errno, errbuf)); | |
2934 | } | |
2935 | } | |
2936 | ||
2937 | return (0); | |
2938 | } | |
2939 | ||
2940 | /* | |
2941 | * Destroys the given dataset. The caller must make sure that the filesystem | |
2942 | * isn't mounted, and that there are no active dependents. | |
2943 | */ | |
2944 | int | |
45d1cae3 | 2945 | zfs_destroy(zfs_handle_t *zhp, boolean_t defer) |
34dc7c2f | 2946 | { |
2598c001 | 2947 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
2948 | |
2949 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
2950 | ||
2951 | if (ZFS_IS_VOLUME(zhp)) { | |
34dc7c2f BB |
2952 | zc.zc_objset_type = DMU_OST_ZVOL; |
2953 | } else { | |
2954 | zc.zc_objset_type = DMU_OST_ZFS; | |
2955 | } | |
2956 | ||
45d1cae3 | 2957 | zc.zc_defer_destroy = defer; |
34dc7c2f BB |
2958 | if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0) { |
2959 | return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, | |
2960 | dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), | |
2961 | zhp->zfs_name)); | |
2962 | } | |
2963 | ||
2964 | remove_mountpoint(zhp); | |
2965 | ||
2966 | return (0); | |
2967 | } | |
2968 | ||
2969 | struct destroydata { | |
2970 | char *snapname; | |
2971 | boolean_t gotone; | |
2972 | boolean_t closezhp; | |
2973 | }; | |
2974 | ||
2975 | static int | |
428870ff | 2976 | zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) |
34dc7c2f BB |
2977 | { |
2978 | struct destroydata *dd = arg; | |
2979 | zfs_handle_t *szhp; | |
2980 | char name[ZFS_MAXNAMELEN]; | |
2981 | boolean_t closezhp = dd->closezhp; | |
428870ff | 2982 | int rv = 0; |
34dc7c2f BB |
2983 | |
2984 | (void) strlcpy(name, zhp->zfs_name, sizeof (name)); | |
2985 | (void) strlcat(name, "@", sizeof (name)); | |
2986 | (void) strlcat(name, dd->snapname, sizeof (name)); | |
2987 | ||
2988 | szhp = make_dataset_handle(zhp->zfs_hdl, name); | |
2989 | if (szhp) { | |
2990 | dd->gotone = B_TRUE; | |
2991 | zfs_close(szhp); | |
2992 | } | |
2993 | ||
34dc7c2f | 2994 | dd->closezhp = B_TRUE; |
428870ff BB |
2995 | if (!dd->gotone) |
2996 | rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, arg); | |
34dc7c2f BB |
2997 | if (closezhp) |
2998 | zfs_close(zhp); | |
2999 | return (rv); | |
3000 | } | |
3001 | ||
3002 | /* | |
3003 | * Destroys all snapshots with the given name in zhp & descendants. | |
3004 | */ | |
3005 | int | |
45d1cae3 | 3006 | zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) |
34dc7c2f | 3007 | { |
2598c001 | 3008 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3009 | int ret; |
3010 | struct destroydata dd = { 0 }; | |
3011 | ||
3012 | dd.snapname = snapname; | |
428870ff | 3013 | (void) zfs_check_snap_cb(zhp, &dd); |
34dc7c2f BB |
3014 | |
3015 | if (!dd.gotone) { | |
3016 | return (zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, | |
3017 | dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"), | |
3018 | zhp->zfs_name, snapname)); | |
3019 | } | |
3020 | ||
3021 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3022 | (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); | |
45d1cae3 | 3023 | zc.zc_defer_destroy = defer; |
34dc7c2f BB |
3024 | |
3025 | ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY_SNAPS, &zc); | |
3026 | if (ret != 0) { | |
3027 | char errbuf[1024]; | |
3028 | ||
3029 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3030 | "cannot destroy '%s@%s'"), zc.zc_name, snapname); | |
3031 | ||
3032 | switch (errno) { | |
3033 | case EEXIST: | |
3034 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3035 | "snapshot is cloned")); | |
3036 | return (zfs_error(zhp->zfs_hdl, EZFS_EXISTS, errbuf)); | |
3037 | ||
3038 | default: | |
3039 | return (zfs_standard_error(zhp->zfs_hdl, errno, | |
3040 | errbuf)); | |
3041 | } | |
3042 | } | |
3043 | ||
3044 | return (0); | |
3045 | } | |
3046 | ||
3047 | /* | |
3048 | * Clones the given dataset. The target must be of the same type as the source. | |
3049 | */ | |
3050 | int | |
3051 | zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) | |
3052 | { | |
2598c001 | 3053 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3054 | char parent[ZFS_MAXNAMELEN]; |
3055 | int ret; | |
3056 | char errbuf[1024]; | |
3057 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
3058 | zfs_type_t type; | |
3059 | uint64_t zoned; | |
3060 | ||
3061 | assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); | |
3062 | ||
3063 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3064 | "cannot create '%s'"), target); | |
3065 | ||
3066 | /* validate the target name */ | |
3067 | if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE)) | |
3068 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3069 | ||
3070 | /* validate parents exist */ | |
3071 | if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0) | |
3072 | return (-1); | |
3073 | ||
3074 | (void) parent_name(target, parent, sizeof (parent)); | |
3075 | ||
3076 | /* do the clone */ | |
3077 | if (ZFS_IS_VOLUME(zhp)) { | |
3078 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3079 | type = ZFS_TYPE_VOLUME; | |
3080 | } else { | |
3081 | zc.zc_objset_type = DMU_OST_ZFS; | |
3082 | type = ZFS_TYPE_FILESYSTEM; | |
3083 | } | |
3084 | ||
3085 | if (props) { | |
b128c09f BB |
3086 | if ((props = zfs_valid_proplist(hdl, type, props, zoned, |
3087 | zhp, errbuf)) == NULL) | |
34dc7c2f BB |
3088 | return (-1); |
3089 | ||
3090 | if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { | |
3091 | nvlist_free(props); | |
3092 | return (-1); | |
3093 | } | |
3094 | ||
3095 | nvlist_free(props); | |
3096 | } | |
3097 | ||
3098 | (void) strlcpy(zc.zc_name, target, sizeof (zc.zc_name)); | |
3099 | (void) strlcpy(zc.zc_value, zhp->zfs_name, sizeof (zc.zc_value)); | |
3100 | ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_CREATE, &zc); | |
3101 | ||
3102 | zcmd_free_nvlists(&zc); | |
3103 | ||
3104 | if (ret != 0) { | |
3105 | switch (errno) { | |
3106 | ||
3107 | case ENOENT: | |
3108 | /* | |
3109 | * The parent doesn't exist. We should have caught this | |
3110 | * above, but there may a race condition that has since | |
3111 | * destroyed the parent. | |
3112 | * | |
3113 | * At this point, we don't know whether it's the source | |
3114 | * that doesn't exist anymore, or whether the target | |
3115 | * dataset doesn't exist. | |
3116 | */ | |
3117 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3118 | "no such parent '%s'"), parent); | |
3119 | return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf)); | |
3120 | ||
3121 | case EXDEV: | |
3122 | zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, | |
3123 | "source and target pools differ")); | |
3124 | return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET, | |
3125 | errbuf)); | |
3126 | ||
3127 | default: | |
3128 | return (zfs_standard_error(zhp->zfs_hdl, errno, | |
3129 | errbuf)); | |
3130 | } | |
34dc7c2f BB |
3131 | } |
3132 | ||
3133 | return (ret); | |
3134 | } | |
3135 | ||
34dc7c2f BB |
3136 | /* |
3137 | * Promotes the given clone fs to be the clone parent. | |
3138 | */ | |
3139 | int | |
3140 | zfs_promote(zfs_handle_t *zhp) | |
3141 | { | |
3142 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
2598c001 | 3143 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f | 3144 | char parent[MAXPATHLEN]; |
34dc7c2f | 3145 | int ret; |
34dc7c2f BB |
3146 | char errbuf[1024]; |
3147 | ||
3148 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3149 | "cannot promote '%s'"), zhp->zfs_name); | |
3150 | ||
3151 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { | |
3152 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3153 | "snapshots can not be promoted")); | |
3154 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3155 | } | |
3156 | ||
3157 | (void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent)); | |
3158 | if (parent[0] == '\0') { | |
3159 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3160 | "not a cloned filesystem")); | |
3161 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3162 | } | |
34dc7c2f | 3163 | |
34dc7c2f BB |
3164 | (void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin, |
3165 | sizeof (zc.zc_value)); | |
3166 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3167 | ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc); | |
3168 | ||
3169 | if (ret != 0) { | |
3170 | int save_errno = errno; | |
3171 | ||
34dc7c2f BB |
3172 | switch (save_errno) { |
3173 | case EEXIST: | |
428870ff | 3174 | /* There is a conflicting snapshot name. */ |
34dc7c2f | 3175 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
428870ff BB |
3176 | "conflicting snapshot '%s' from parent '%s'"), |
3177 | zc.zc_string, parent); | |
34dc7c2f BB |
3178 | return (zfs_error(hdl, EZFS_EXISTS, errbuf)); |
3179 | ||
3180 | default: | |
3181 | return (zfs_standard_error(hdl, save_errno, errbuf)); | |
3182 | } | |
34dc7c2f | 3183 | } |
34dc7c2f BB |
3184 | return (ret); |
3185 | } | |
3186 | ||
3187 | /* | |
3188 | * Takes a snapshot of the given dataset. | |
3189 | */ | |
3190 | int | |
b128c09f BB |
3191 | zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, |
3192 | nvlist_t *props) | |
34dc7c2f BB |
3193 | { |
3194 | const char *delim; | |
b128c09f | 3195 | char parent[ZFS_MAXNAMELEN]; |
34dc7c2f | 3196 | zfs_handle_t *zhp; |
2598c001 | 3197 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3198 | int ret; |
3199 | char errbuf[1024]; | |
3200 | ||
3201 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3202 | "cannot snapshot '%s'"), path); | |
3203 | ||
3204 | /* validate the target name */ | |
3205 | if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE)) | |
3206 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3207 | ||
b128c09f BB |
3208 | if (props) { |
3209 | if ((props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT, | |
3210 | props, B_FALSE, NULL, errbuf)) == NULL) | |
3211 | return (-1); | |
3212 | ||
3213 | if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { | |
3214 | nvlist_free(props); | |
3215 | return (-1); | |
3216 | } | |
3217 | ||
3218 | nvlist_free(props); | |
3219 | } | |
3220 | ||
34dc7c2f BB |
3221 | /* make sure the parent exists and is of the appropriate type */ |
3222 | delim = strchr(path, '@'); | |
34dc7c2f BB |
3223 | (void) strncpy(parent, path, delim - path); |
3224 | parent[delim - path] = '\0'; | |
3225 | ||
3226 | if ((zhp = zfs_open(hdl, parent, ZFS_TYPE_FILESYSTEM | | |
3227 | ZFS_TYPE_VOLUME)) == NULL) { | |
b128c09f | 3228 | zcmd_free_nvlists(&zc); |
34dc7c2f BB |
3229 | return (-1); |
3230 | } | |
3231 | ||
3232 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3233 | (void) strlcpy(zc.zc_value, delim+1, sizeof (zc.zc_value)); | |
3234 | if (ZFS_IS_VOLUME(zhp)) | |
3235 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3236 | else | |
3237 | zc.zc_objset_type = DMU_OST_ZFS; | |
3238 | zc.zc_cookie = recursive; | |
3239 | ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SNAPSHOT, &zc); | |
3240 | ||
b128c09f BB |
3241 | zcmd_free_nvlists(&zc); |
3242 | ||
34dc7c2f BB |
3243 | /* |
3244 | * if it was recursive, the one that actually failed will be in | |
3245 | * zc.zc_name. | |
3246 | */ | |
428870ff | 3247 | if (ret != 0) { |
34dc7c2f BB |
3248 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, |
3249 | "cannot create snapshot '%s@%s'"), zc.zc_name, zc.zc_value); | |
34dc7c2f | 3250 | (void) zfs_standard_error(hdl, errno, errbuf); |
428870ff | 3251 | } |
34dc7c2f | 3252 | |
34dc7c2f BB |
3253 | zfs_close(zhp); |
3254 | ||
3255 | return (ret); | |
3256 | } | |
3257 | ||
3258 | /* | |
3259 | * Destroy any more recent snapshots. We invoke this callback on any dependents | |
3260 | * of the snapshot first. If the 'cb_dependent' member is non-zero, then this | |
3261 | * is a dependent and we should just destroy it without checking the transaction | |
3262 | * group. | |
3263 | */ | |
3264 | typedef struct rollback_data { | |
3265 | const char *cb_target; /* the snapshot */ | |
3266 | uint64_t cb_create; /* creation time reference */ | |
3267 | boolean_t cb_error; | |
3268 | boolean_t cb_dependent; | |
3269 | boolean_t cb_force; | |
3270 | } rollback_data_t; | |
3271 | ||
3272 | static int | |
3273 | rollback_destroy(zfs_handle_t *zhp, void *data) | |
3274 | { | |
3275 | rollback_data_t *cbp = data; | |
3276 | ||
3277 | if (!cbp->cb_dependent) { | |
3278 | if (strcmp(zhp->zfs_name, cbp->cb_target) != 0 && | |
3279 | zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT && | |
3280 | zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > | |
3281 | cbp->cb_create) { | |
3282 | char *logstr; | |
3283 | ||
3284 | cbp->cb_dependent = B_TRUE; | |
3285 | cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE, | |
3286 | rollback_destroy, cbp); | |
3287 | cbp->cb_dependent = B_FALSE; | |
3288 | ||
3289 | logstr = zhp->zfs_hdl->libzfs_log_str; | |
3290 | zhp->zfs_hdl->libzfs_log_str = NULL; | |
45d1cae3 | 3291 | cbp->cb_error |= zfs_destroy(zhp, B_FALSE); |
34dc7c2f BB |
3292 | zhp->zfs_hdl->libzfs_log_str = logstr; |
3293 | } | |
3294 | } else { | |
3295 | /* We must destroy this clone; first unmount it */ | |
3296 | prop_changelist_t *clp; | |
3297 | ||
b128c09f | 3298 | clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, |
34dc7c2f BB |
3299 | cbp->cb_force ? MS_FORCE: 0); |
3300 | if (clp == NULL || changelist_prefix(clp) != 0) { | |
3301 | cbp->cb_error = B_TRUE; | |
3302 | zfs_close(zhp); | |
3303 | return (0); | |
3304 | } | |
45d1cae3 | 3305 | if (zfs_destroy(zhp, B_FALSE) != 0) |
34dc7c2f BB |
3306 | cbp->cb_error = B_TRUE; |
3307 | else | |
3308 | changelist_remove(clp, zhp->zfs_name); | |
3309 | (void) changelist_postfix(clp); | |
3310 | changelist_free(clp); | |
3311 | } | |
3312 | ||
3313 | zfs_close(zhp); | |
3314 | return (0); | |
3315 | } | |
3316 | ||
3317 | /* | |
3318 | * Given a dataset, rollback to a specific snapshot, discarding any | |
3319 | * data changes since then and making it the active dataset. | |
3320 | * | |
3321 | * Any snapshots more recent than the target are destroyed, along with | |
3322 | * their dependents. | |
3323 | */ | |
3324 | int | |
3325 | zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) | |
3326 | { | |
3327 | rollback_data_t cb = { 0 }; | |
3328 | int err; | |
2598c001 | 3329 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f | 3330 | boolean_t restore_resv = 0; |
d4ed6673 BB |
3331 | uint64_t old_volsize = 0, new_volsize; |
3332 | zfs_prop_t resv_prop = { 0 }; | |
34dc7c2f BB |
3333 | |
3334 | assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || | |
3335 | zhp->zfs_type == ZFS_TYPE_VOLUME); | |
3336 | ||
3337 | /* | |
3338 | * Destroy all recent snapshots and its dependends. | |
3339 | */ | |
3340 | cb.cb_force = force; | |
3341 | cb.cb_target = snap->zfs_name; | |
3342 | cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG); | |
3343 | (void) zfs_iter_children(zhp, rollback_destroy, &cb); | |
3344 | ||
3345 | if (cb.cb_error) | |
3346 | return (-1); | |
3347 | ||
3348 | /* | |
3349 | * Now that we have verified that the snapshot is the latest, | |
3350 | * rollback to the given snapshot. | |
3351 | */ | |
3352 | ||
3353 | if (zhp->zfs_type == ZFS_TYPE_VOLUME) { | |
34dc7c2f BB |
3354 | if (zfs_which_resv_prop(zhp, &resv_prop) < 0) |
3355 | return (-1); | |
3356 | old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); | |
3357 | restore_resv = | |
3358 | (old_volsize == zfs_prop_get_int(zhp, resv_prop)); | |
3359 | } | |
3360 | ||
3361 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3362 | ||
3363 | if (ZFS_IS_VOLUME(zhp)) | |
3364 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3365 | else | |
3366 | zc.zc_objset_type = DMU_OST_ZFS; | |
3367 | ||
3368 | /* | |
3369 | * We rely on zfs_iter_children() to verify that there are no | |
3370 | * newer snapshots for the given dataset. Therefore, we can | |
3371 | * simply pass the name on to the ioctl() call. There is still | |
3372 | * an unlikely race condition where the user has taken a | |
3373 | * snapshot since we verified that this was the most recent. | |
3374 | * | |
3375 | */ | |
3376 | if ((err = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_ROLLBACK, &zc)) != 0) { | |
3377 | (void) zfs_standard_error_fmt(zhp->zfs_hdl, errno, | |
3378 | dgettext(TEXT_DOMAIN, "cannot rollback '%s'"), | |
3379 | zhp->zfs_name); | |
3380 | return (err); | |
3381 | } | |
3382 | ||
3383 | /* | |
3384 | * For volumes, if the pre-rollback volsize matched the pre- | |
3385 | * rollback reservation and the volsize has changed then set | |
3386 | * the reservation property to the post-rollback volsize. | |
3387 | * Make a new handle since the rollback closed the dataset. | |
3388 | */ | |
3389 | if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && | |
3390 | (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { | |
34dc7c2f BB |
3391 | if (restore_resv) { |
3392 | new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); | |
3393 | if (old_volsize != new_volsize) | |
3394 | err = zfs_prop_set_int(zhp, resv_prop, | |
3395 | new_volsize); | |
3396 | } | |
3397 | zfs_close(zhp); | |
3398 | } | |
3399 | return (err); | |
3400 | } | |
3401 | ||
3402 | /* | |
3403 | * Iterate over all dependents for a given dataset. This includes both | |
3404 | * hierarchical dependents (children) and data dependents (snapshots and | |
3405 | * clones). The bulk of the processing occurs in get_dependents() in | |
3406 | * libzfs_graph.c. | |
3407 | */ | |
3408 | int | |
3409 | zfs_iter_dependents(zfs_handle_t *zhp, boolean_t allowrecursion, | |
3410 | zfs_iter_f func, void *data) | |
3411 | { | |
3412 | char **dependents; | |
3413 | size_t count; | |
3414 | int i; | |
3415 | zfs_handle_t *child; | |
3416 | int ret = 0; | |
3417 | ||
3418 | if (get_dependents(zhp->zfs_hdl, allowrecursion, zhp->zfs_name, | |
3419 | &dependents, &count) != 0) | |
3420 | return (-1); | |
3421 | ||
3422 | for (i = 0; i < count; i++) { | |
3423 | if ((child = make_dataset_handle(zhp->zfs_hdl, | |
3424 | dependents[i])) == NULL) | |
3425 | continue; | |
3426 | ||
3427 | if ((ret = func(child, data)) != 0) | |
3428 | break; | |
3429 | } | |
3430 | ||
3431 | for (i = 0; i < count; i++) | |
3432 | free(dependents[i]); | |
3433 | free(dependents); | |
3434 | ||
3435 | return (ret); | |
3436 | } | |
3437 | ||
3438 | /* | |
3439 | * Renames the given dataset. | |
3440 | */ | |
3441 | int | |
3442 | zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive) | |
3443 | { | |
3444 | int ret; | |
2598c001 | 3445 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3446 | char *delim; |
3447 | prop_changelist_t *cl = NULL; | |
3448 | zfs_handle_t *zhrp = NULL; | |
3449 | char *parentname = NULL; | |
3450 | char parent[ZFS_MAXNAMELEN]; | |
3451 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
3452 | char errbuf[1024]; | |
3453 | ||
3454 | /* if we have the same exact name, just return success */ | |
3455 | if (strcmp(zhp->zfs_name, target) == 0) | |
3456 | return (0); | |
3457 | ||
3458 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3459 | "cannot rename to '%s'"), target); | |
3460 | ||
3461 | /* | |
3462 | * Make sure the target name is valid | |
3463 | */ | |
3464 | if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) { | |
3465 | if ((strchr(target, '@') == NULL) || | |
3466 | *target == '@') { | |
3467 | /* | |
3468 | * Snapshot target name is abbreviated, | |
3469 | * reconstruct full dataset name | |
3470 | */ | |
3471 | (void) strlcpy(parent, zhp->zfs_name, | |
3472 | sizeof (parent)); | |
3473 | delim = strchr(parent, '@'); | |
3474 | if (strchr(target, '@') == NULL) | |
3475 | *(++delim) = '\0'; | |
3476 | else | |
3477 | *delim = '\0'; | |
3478 | (void) strlcat(parent, target, sizeof (parent)); | |
3479 | target = parent; | |
3480 | } else { | |
3481 | /* | |
3482 | * Make sure we're renaming within the same dataset. | |
3483 | */ | |
3484 | delim = strchr(target, '@'); | |
3485 | if (strncmp(zhp->zfs_name, target, delim - target) | |
3486 | != 0 || zhp->zfs_name[delim - target] != '@') { | |
3487 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3488 | "snapshots must be part of same " | |
3489 | "dataset")); | |
3490 | return (zfs_error(hdl, EZFS_CROSSTARGET, | |
3491 | errbuf)); | |
3492 | } | |
3493 | } | |
3494 | if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) | |
3495 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3496 | } else { | |
3497 | if (recursive) { | |
3498 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3499 | "recursive rename must be a snapshot")); | |
3500 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3501 | } | |
3502 | ||
3503 | if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) | |
3504 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
34dc7c2f BB |
3505 | |
3506 | /* validate parents */ | |
428870ff | 3507 | if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) |
34dc7c2f BB |
3508 | return (-1); |
3509 | ||
34dc7c2f BB |
3510 | /* make sure we're in the same pool */ |
3511 | verify((delim = strchr(target, '/')) != NULL); | |
3512 | if (strncmp(zhp->zfs_name, target, delim - target) != 0 || | |
3513 | zhp->zfs_name[delim - target] != '/') { | |
3514 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3515 | "datasets must be within same pool")); | |
3516 | return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); | |
3517 | } | |
3518 | ||
3519 | /* new name cannot be a child of the current dataset name */ | |
428870ff | 3520 | if (is_descendant(zhp->zfs_name, target)) { |
34dc7c2f | 3521 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, |
428870ff | 3522 | "New dataset name cannot be a descendant of " |
34dc7c2f BB |
3523 | "current dataset name")); |
3524 | return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); | |
3525 | } | |
3526 | } | |
3527 | ||
3528 | (void) snprintf(errbuf, sizeof (errbuf), | |
3529 | dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name); | |
3530 | ||
3531 | if (getzoneid() == GLOBAL_ZONEID && | |
3532 | zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) { | |
3533 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3534 | "dataset is used in a non-global zone")); | |
3535 | return (zfs_error(hdl, EZFS_ZONED, errbuf)); | |
3536 | } | |
3537 | ||
3538 | if (recursive) { | |
34dc7c2f BB |
3539 | |
3540 | parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name); | |
3541 | if (parentname == NULL) { | |
3542 | ret = -1; | |
3543 | goto error; | |
3544 | } | |
3545 | delim = strchr(parentname, '@'); | |
3546 | *delim = '\0'; | |
3547 | zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET); | |
3548 | if (zhrp == NULL) { | |
3549 | ret = -1; | |
3550 | goto error; | |
3551 | } | |
3552 | ||
34dc7c2f | 3553 | } else { |
b128c09f | 3554 | if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0, 0)) == NULL) |
34dc7c2f BB |
3555 | return (-1); |
3556 | ||
3557 | if (changelist_haszonedchild(cl)) { | |
3558 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3559 | "child dataset with inherited mountpoint is used " | |
3560 | "in a non-global zone")); | |
3561 | (void) zfs_error(hdl, EZFS_ZONED, errbuf); | |
d4ed6673 | 3562 | ret = -1; |
34dc7c2f BB |
3563 | goto error; |
3564 | } | |
3565 | ||
3566 | if ((ret = changelist_prefix(cl)) != 0) | |
3567 | goto error; | |
3568 | } | |
3569 | ||
3570 | if (ZFS_IS_VOLUME(zhp)) | |
3571 | zc.zc_objset_type = DMU_OST_ZVOL; | |
3572 | else | |
3573 | zc.zc_objset_type = DMU_OST_ZFS; | |
3574 | ||
3575 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3576 | (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); | |
3577 | ||
3578 | zc.zc_cookie = recursive; | |
3579 | ||
3580 | if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) { | |
3581 | /* | |
3582 | * if it was recursive, the one that actually failed will | |
3583 | * be in zc.zc_name | |
3584 | */ | |
3585 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3586 | "cannot rename '%s'"), zc.zc_name); | |
3587 | ||
3588 | if (recursive && errno == EEXIST) { | |
3589 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3590 | "a child dataset already has a snapshot " | |
3591 | "with the new name")); | |
3592 | (void) zfs_error(hdl, EZFS_EXISTS, errbuf); | |
3593 | } else { | |
3594 | (void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf); | |
3595 | } | |
3596 | ||
3597 | /* | |
3598 | * On failure, we still want to remount any filesystems that | |
3599 | * were previously mounted, so we don't alter the system state. | |
3600 | */ | |
428870ff | 3601 | if (!recursive) |
34dc7c2f | 3602 | (void) changelist_postfix(cl); |
34dc7c2f | 3603 | } else { |
428870ff | 3604 | if (!recursive) { |
34dc7c2f BB |
3605 | changelist_rename(cl, zfs_get_name(zhp), target); |
3606 | ret = changelist_postfix(cl); | |
3607 | } | |
3608 | } | |
3609 | ||
3610 | error: | |
3611 | if (parentname) { | |
3612 | free(parentname); | |
3613 | } | |
3614 | if (zhrp) { | |
3615 | zfs_close(zhrp); | |
3616 | } | |
3617 | if (cl) { | |
3618 | changelist_free(cl); | |
3619 | } | |
3620 | return (ret); | |
3621 | } | |
3622 | ||
428870ff BB |
3623 | nvlist_t * |
3624 | zfs_get_user_props(zfs_handle_t *zhp) | |
34dc7c2f | 3625 | { |
428870ff | 3626 | return (zhp->zfs_user_props); |
34dc7c2f BB |
3627 | } |
3628 | ||
3629 | nvlist_t * | |
428870ff | 3630 | zfs_get_recvd_props(zfs_handle_t *zhp) |
34dc7c2f | 3631 | { |
428870ff BB |
3632 | if (zhp->zfs_recvd_props == NULL) |
3633 | if (get_recvd_props_ioctl(zhp) != 0) | |
3634 | return (NULL); | |
3635 | return (zhp->zfs_recvd_props); | |
34dc7c2f BB |
3636 | } |
3637 | ||
3638 | /* | |
3639 | * This function is used by 'zfs list' to determine the exact set of columns to | |
3640 | * display, and their maximum widths. This does two main things: | |
3641 | * | |
3642 | * - If this is a list of all properties, then expand the list to include | |
3643 | * all native properties, and set a flag so that for each dataset we look | |
3644 | * for new unique user properties and add them to the list. | |
3645 | * | |
3646 | * - For non fixed-width properties, keep track of the maximum width seen | |
428870ff BB |
3647 | * so that we can size the column appropriately. If the user has |
3648 | * requested received property values, we also need to compute the width | |
3649 | * of the RECEIVED column. | |
34dc7c2f BB |
3650 | */ |
3651 | int | |
428870ff | 3652 | zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received) |
34dc7c2f BB |
3653 | { |
3654 | libzfs_handle_t *hdl = zhp->zfs_hdl; | |
3655 | zprop_list_t *entry; | |
3656 | zprop_list_t **last, **start; | |
3657 | nvlist_t *userprops, *propval; | |
3658 | nvpair_t *elem; | |
3659 | char *strval; | |
3660 | char buf[ZFS_MAXPROPLEN]; | |
3661 | ||
3662 | if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0) | |
3663 | return (-1); | |
3664 | ||
3665 | userprops = zfs_get_user_props(zhp); | |
3666 | ||
3667 | entry = *plp; | |
3668 | if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) { | |
3669 | /* | |
3670 | * Go through and add any user properties as necessary. We | |
3671 | * start by incrementing our list pointer to the first | |
3672 | * non-native property. | |
3673 | */ | |
3674 | start = plp; | |
3675 | while (*start != NULL) { | |
3676 | if ((*start)->pl_prop == ZPROP_INVAL) | |
3677 | break; | |
3678 | start = &(*start)->pl_next; | |
3679 | } | |
3680 | ||
3681 | elem = NULL; | |
3682 | while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) { | |
3683 | /* | |
3684 | * See if we've already found this property in our list. | |
3685 | */ | |
3686 | for (last = start; *last != NULL; | |
3687 | last = &(*last)->pl_next) { | |
3688 | if (strcmp((*last)->pl_user_prop, | |
3689 | nvpair_name(elem)) == 0) | |
3690 | break; | |
3691 | } | |
3692 | ||
3693 | if (*last == NULL) { | |
3694 | if ((entry = zfs_alloc(hdl, | |
3695 | sizeof (zprop_list_t))) == NULL || | |
3696 | ((entry->pl_user_prop = zfs_strdup(hdl, | |
3697 | nvpair_name(elem)))) == NULL) { | |
3698 | free(entry); | |
3699 | return (-1); | |
3700 | } | |
3701 | ||
3702 | entry->pl_prop = ZPROP_INVAL; | |
3703 | entry->pl_width = strlen(nvpair_name(elem)); | |
3704 | entry->pl_all = B_TRUE; | |
3705 | *last = entry; | |
3706 | } | |
3707 | } | |
3708 | } | |
3709 | ||
3710 | /* | |
3711 | * Now go through and check the width of any non-fixed columns | |
3712 | */ | |
3713 | for (entry = *plp; entry != NULL; entry = entry->pl_next) { | |
3714 | if (entry->pl_fixed) | |
3715 | continue; | |
3716 | ||
3717 | if (entry->pl_prop != ZPROP_INVAL) { | |
3718 | if (zfs_prop_get(zhp, entry->pl_prop, | |
3719 | buf, sizeof (buf), NULL, NULL, 0, B_FALSE) == 0) { | |
3720 | if (strlen(buf) > entry->pl_width) | |
3721 | entry->pl_width = strlen(buf); | |
3722 | } | |
428870ff BB |
3723 | if (received && zfs_prop_get_recvd(zhp, |
3724 | zfs_prop_to_name(entry->pl_prop), | |
3725 | buf, sizeof (buf), B_FALSE) == 0) | |
3726 | if (strlen(buf) > entry->pl_recvd_width) | |
3727 | entry->pl_recvd_width = strlen(buf); | |
3728 | } else { | |
3729 | if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, | |
3730 | &propval) == 0) { | |
3731 | verify(nvlist_lookup_string(propval, | |
3732 | ZPROP_VALUE, &strval) == 0); | |
3733 | if (strlen(strval) > entry->pl_width) | |
3734 | entry->pl_width = strlen(strval); | |
3735 | } | |
3736 | if (received && zfs_prop_get_recvd(zhp, | |
3737 | entry->pl_user_prop, | |
3738 | buf, sizeof (buf), B_FALSE) == 0) | |
3739 | if (strlen(buf) > entry->pl_recvd_width) | |
3740 | entry->pl_recvd_width = strlen(buf); | |
34dc7c2f BB |
3741 | } |
3742 | } | |
3743 | ||
3744 | return (0); | |
3745 | } | |
3746 | ||
34dc7c2f BB |
3747 | int |
3748 | zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, | |
9babb374 BB |
3749 | char *resource, void *export, void *sharetab, |
3750 | int sharemax, zfs_share_op_t operation) | |
34dc7c2f | 3751 | { |
2598c001 | 3752 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
34dc7c2f BB |
3753 | int error; |
3754 | ||
3755 | (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); | |
3756 | (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); | |
9babb374 BB |
3757 | if (resource) |
3758 | (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); | |
34dc7c2f BB |
3759 | zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; |
3760 | zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; | |
3761 | zc.zc_share.z_sharetype = operation; | |
3762 | zc.zc_share.z_sharemax = sharemax; | |
34dc7c2f BB |
3763 | error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); |
3764 | return (error); | |
3765 | } | |
9babb374 BB |
3766 | |
3767 | void | |
3768 | zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) | |
3769 | { | |
3770 | nvpair_t *curr; | |
3771 | ||
3772 | /* | |
3773 | * Keep a reference to the props-table against which we prune the | |
3774 | * properties. | |
3775 | */ | |
3776 | zhp->zfs_props_table = props; | |
3777 | ||
3778 | curr = nvlist_next_nvpair(zhp->zfs_props, NULL); | |
3779 | ||
3780 | while (curr) { | |
3781 | zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr)); | |
3782 | nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); | |
3783 | ||
3784 | /* | |
428870ff BB |
3785 | * User properties will result in ZPROP_INVAL, and since we |
3786 | * only know how to prune standard ZFS properties, we always | |
3787 | * leave these in the list. This can also happen if we | |
3788 | * encounter an unknown DSL property (when running older | |
3789 | * software, for example). | |
9babb374 BB |
3790 | */ |
3791 | if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) | |
3792 | (void) nvlist_remove(zhp->zfs_props, | |
3793 | nvpair_name(curr), nvpair_type(curr)); | |
3794 | curr = next; | |
3795 | } | |
3796 | } | |
3797 | ||
3798 | static int | |
3799 | zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, | |
3800 | zfs_smb_acl_op_t cmd, char *resource1, char *resource2) | |
3801 | { | |
2598c001 | 3802 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
9babb374 BB |
3803 | nvlist_t *nvlist = NULL; |
3804 | int error; | |
3805 | ||
3806 | (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); | |
3807 | (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); | |
3808 | zc.zc_cookie = (uint64_t)cmd; | |
3809 | ||
3810 | if (cmd == ZFS_SMB_ACL_RENAME) { | |
3811 | if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { | |
3812 | (void) no_memory(hdl); | |
a6098088 | 3813 | return (-1); |
9babb374 BB |
3814 | } |
3815 | } | |
3816 | ||
3817 | switch (cmd) { | |
3818 | case ZFS_SMB_ACL_ADD: | |
3819 | case ZFS_SMB_ACL_REMOVE: | |
3820 | (void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string)); | |
3821 | break; | |
3822 | case ZFS_SMB_ACL_RENAME: | |
3823 | if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC, | |
3824 | resource1) != 0) { | |
3825 | (void) no_memory(hdl); | |
3826 | return (-1); | |
3827 | } | |
3828 | if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET, | |
3829 | resource2) != 0) { | |
3830 | (void) no_memory(hdl); | |
3831 | return (-1); | |
3832 | } | |
3833 | if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) { | |
3834 | nvlist_free(nvlist); | |
3835 | return (-1); | |
3836 | } | |
3837 | break; | |
3838 | case ZFS_SMB_ACL_PURGE: | |
3839 | break; | |
3840 | default: | |
3841 | return (-1); | |
3842 | } | |
3843 | error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc); | |
3844 | if (nvlist) | |
3845 | nvlist_free(nvlist); | |
3846 | return (error); | |
3847 | } | |
3848 | ||
3849 | int | |
3850 | zfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset, | |
3851 | char *path, char *resource) | |
3852 | { | |
3853 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD, | |
3854 | resource, NULL)); | |
3855 | } | |
3856 | ||
3857 | int | |
3858 | zfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset, | |
3859 | char *path, char *resource) | |
3860 | { | |
3861 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE, | |
3862 | resource, NULL)); | |
3863 | } | |
3864 | ||
3865 | int | |
3866 | zfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path) | |
3867 | { | |
3868 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE, | |
3869 | NULL, NULL)); | |
3870 | } | |
3871 | ||
3872 | int | |
3873 | zfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path, | |
3874 | char *oldname, char *newname) | |
3875 | { | |
3876 | return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME, | |
3877 | oldname, newname)); | |
3878 | } | |
3879 | ||
3880 | int | |
3881 | zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, | |
3882 | zfs_userspace_cb_t func, void *arg) | |
3883 | { | |
2598c001 | 3884 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
9babb374 BB |
3885 | int error; |
3886 | zfs_useracct_t buf[100]; | |
3887 | ||
3888 | (void) strncpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3889 | ||
3890 | zc.zc_objset_type = type; | |
3891 | zc.zc_nvlist_dst = (uintptr_t)buf; | |
3892 | ||
3893 | /* CONSTCOND */ | |
3894 | while (1) { | |
3895 | zfs_useracct_t *zua = buf; | |
3896 | ||
3897 | zc.zc_nvlist_dst_size = sizeof (buf); | |
3898 | error = ioctl(zhp->zfs_hdl->libzfs_fd, | |
3899 | ZFS_IOC_USERSPACE_MANY, &zc); | |
3900 | if (error || zc.zc_nvlist_dst_size == 0) | |
3901 | break; | |
3902 | ||
3903 | while (zc.zc_nvlist_dst_size > 0) { | |
3904 | error = func(arg, zua->zu_domain, zua->zu_rid, | |
3905 | zua->zu_space); | |
3906 | if (error != 0) | |
3907 | return (error); | |
3908 | zua++; | |
3909 | zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t); | |
3910 | } | |
3911 | } | |
3912 | ||
3913 | return (error); | |
3914 | } | |
45d1cae3 BB |
3915 | |
3916 | int | |
3917 | zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, | |
572e2857 BB |
3918 | boolean_t recursive, boolean_t temphold, boolean_t enoent_ok, |
3919 | int cleanup_fd, uint64_t dsobj, uint64_t createtxg) | |
45d1cae3 | 3920 | { |
2598c001 | 3921 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
45d1cae3 BB |
3922 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
3923 | ||
572e2857 BB |
3924 | ASSERT(!recursive || dsobj == 0); |
3925 | ||
45d1cae3 BB |
3926 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); |
3927 | (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); | |
428870ff BB |
3928 | if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string)) |
3929 | >= sizeof (zc.zc_string)) | |
3930 | return (zfs_error(hdl, EZFS_TAGTOOLONG, tag)); | |
45d1cae3 | 3931 | zc.zc_cookie = recursive; |
428870ff | 3932 | zc.zc_temphold = temphold; |
572e2857 BB |
3933 | zc.zc_cleanup_fd = cleanup_fd; |
3934 | zc.zc_sendobj = dsobj; | |
3935 | zc.zc_createtxg = createtxg; | |
45d1cae3 BB |
3936 | |
3937 | if (zfs_ioctl(hdl, ZFS_IOC_HOLD, &zc) != 0) { | |
3938 | char errbuf[ZFS_MAXNAMELEN+32]; | |
3939 | ||
3940 | /* | |
3941 | * if it was recursive, the one that actually failed will be in | |
3942 | * zc.zc_name. | |
3943 | */ | |
3944 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
3945 | "cannot hold '%s@%s'"), zc.zc_name, snapname); | |
3946 | switch (errno) { | |
428870ff BB |
3947 | case E2BIG: |
3948 | /* | |
3949 | * Temporary tags wind up having the ds object id | |
3950 | * prepended. So even if we passed the length check | |
3951 | * above, it's still possible for the tag to wind | |
3952 | * up being slightly too long. | |
3953 | */ | |
3954 | return (zfs_error(hdl, EZFS_TAGTOOLONG, errbuf)); | |
45d1cae3 BB |
3955 | case ENOTSUP: |
3956 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
3957 | "pool must be upgraded")); | |
3958 | return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); | |
3959 | case EINVAL: | |
3960 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
3961 | case EEXIST: | |
3962 | return (zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf)); | |
428870ff BB |
3963 | case ENOENT: |
3964 | if (enoent_ok) | |
572e2857 | 3965 | return (ENOENT); |
428870ff | 3966 | /* FALLTHROUGH */ |
45d1cae3 BB |
3967 | default: |
3968 | return (zfs_standard_error_fmt(hdl, errno, errbuf)); | |
3969 | } | |
3970 | } | |
3971 | ||
3972 | return (0); | |
3973 | } | |
3974 | ||
3975 | int | |
3976 | zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, | |
3977 | boolean_t recursive) | |
3978 | { | |
2598c001 | 3979 | zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; |
45d1cae3 BB |
3980 | libzfs_handle_t *hdl = zhp->zfs_hdl; |
3981 | ||
3982 | (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); | |
3983 | (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); | |
428870ff BB |
3984 | if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string)) |
3985 | >= sizeof (zc.zc_string)) | |
3986 | return (zfs_error(hdl, EZFS_TAGTOOLONG, tag)); | |
45d1cae3 BB |
3987 | zc.zc_cookie = recursive; |
3988 | ||
3989 | if (zfs_ioctl(hdl, ZFS_IOC_RELEASE, &zc) != 0) { | |
3990 | char errbuf[ZFS_MAXNAMELEN+32]; | |
3991 | ||
3992 | /* | |
3993 | * if it was recursive, the one that actually failed will be in | |
3994 | * zc.zc_name. | |
3995 | */ | |
3996 | (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, | |
428870ff BB |
3997 | "cannot release '%s' from '%s@%s'"), tag, zc.zc_name, |
3998 | snapname); | |
45d1cae3 BB |
3999 | switch (errno) { |
4000 | case ESRCH: | |
4001 | return (zfs_error(hdl, EZFS_REFTAG_RELE, errbuf)); | |
4002 | case ENOTSUP: | |
4003 | zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, | |
4004 | "pool must be upgraded")); | |
4005 | return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); | |
4006 | case EINVAL: | |
4007 | return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); | |
4008 | default: | |
4009 | return (zfs_standard_error_fmt(hdl, errno, errbuf)); | |
4010 | } | |
4011 | } | |
4012 | ||
4013 | return (0); | |
4014 | } | |
428870ff | 4015 | |
428870ff BB |
4016 | uint64_t |
4017 | zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) | |
4018 | { | |
4019 | uint64_t numdb; | |
4020 | uint64_t nblocks, volblocksize; | |
4021 | int ncopies; | |
4022 | char *strval; | |
4023 | ||
4024 | if (nvlist_lookup_string(props, | |
4025 | zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) | |
4026 | ncopies = atoi(strval); | |
4027 | else | |
4028 | ncopies = 1; | |
4029 | if (nvlist_lookup_uint64(props, | |
4030 | zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), | |
4031 | &volblocksize) != 0) | |
4032 | volblocksize = ZVOL_DEFAULT_BLOCKSIZE; | |
4033 | nblocks = volsize/volblocksize; | |
4034 | /* start with metadnode L0-L6 */ | |
4035 | numdb = 7; | |
4036 | /* calculate number of indirects */ | |
4037 | while (nblocks > 1) { | |
4038 | nblocks += DNODES_PER_LEVEL - 1; | |
4039 | nblocks /= DNODES_PER_LEVEL; | |
4040 | numdb += nblocks; | |
4041 | } | |
4042 | numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); | |
4043 | volsize *= ncopies; | |
4044 | /* | |
4045 | * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't | |
4046 | * compressed, but in practice they compress down to about | |
4047 | * 1100 bytes | |
4048 | */ | |
4049 | numdb *= 1ULL << DN_MAX_INDBLKSHIFT; | |
4050 | volsize += numdb; | |
4051 | return (volsize); | |
4052 | } |