Print this page
6096 ZFS_SMB_ACL_RENAME needs to cleanup better
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
| Split |
Close |
| Expand all |
| Collapse all |
--- old/usr/src/uts/common/fs/zfs/zfs_ioctl.c
+++ new/usr/src/uts/common/fs/zfs/zfs_ioctl.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 * Portions Copyright 2011 Martin Matuska
25 25 * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
26 26 * Copyright (c) 2014, Joyent, Inc. All rights reserved.
27 27 * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
28 28 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
29 29 * Copyright (c) 2013 Steven Hartland. All rights reserved.
30 30 */
31 31
32 32 /*
33 33 * ZFS ioctls.
34 34 *
35 35 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage
36 36 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool.
37 37 *
38 38 * There are two ways that we handle ioctls: the legacy way where almost
39 39 * all of the logic is in the ioctl callback, and the new way where most
40 40 * of the marshalling is handled in the common entry point, zfsdev_ioctl().
41 41 *
42 42 * Non-legacy ioctls should be registered by calling
43 43 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked
44 44 * from userland by lzc_ioctl().
45 45 *
46 46 * The registration arguments are as follows:
47 47 *
48 48 * const char *name
49 49 * The name of the ioctl. This is used for history logging. If the
50 50 * ioctl returns successfully (the callback returns 0), and allow_log
51 51 * is true, then a history log entry will be recorded with the input &
52 52 * output nvlists. The log entry can be printed with "zpool history -i".
53 53 *
54 54 * zfs_ioc_t ioc
55 55 * The ioctl request number, which userland will pass to ioctl(2).
56 56 * The ioctl numbers can change from release to release, because
57 57 * the caller (libzfs) must be matched to the kernel.
58 58 *
59 59 * zfs_secpolicy_func_t *secpolicy
60 60 * This function will be called before the zfs_ioc_func_t, to
61 61 * determine if this operation is permitted. It should return EPERM
62 62 * on failure, and 0 on success. Checks include determining if the
63 63 * dataset is visible in this zone, and if the user has either all
64 64 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission
65 65 * to do this operation on this dataset with "zfs allow".
66 66 *
67 67 * zfs_ioc_namecheck_t namecheck
68 68 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool
69 69 * name, a dataset name, or nothing. If the name is not well-formed,
70 70 * the ioctl will fail and the callback will not be called.
71 71 * Therefore, the callback can assume that the name is well-formed
72 72 * (e.g. is null-terminated, doesn't have more than one '@' character,
73 73 * doesn't have invalid characters).
74 74 *
75 75 * zfs_ioc_poolcheck_t pool_check
76 76 * This specifies requirements on the pool state. If the pool does
77 77 * not meet them (is suspended or is readonly), the ioctl will fail
78 78 * and the callback will not be called. If any checks are specified
79 79 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME.
80 80 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED |
81 81 * POOL_CHECK_READONLY).
82 82 *
83 83 * boolean_t smush_outnvlist
84 84 * If smush_outnvlist is true, then the output is presumed to be a
85 85 * list of errors, and it will be "smushed" down to fit into the
86 86 * caller's buffer, by removing some entries and replacing them with a
87 87 * single "N_MORE_ERRORS" entry indicating how many were removed. See
88 88 * nvlist_smush() for details. If smush_outnvlist is false, and the
89 89 * outnvlist does not fit into the userland-provided buffer, then the
90 90 * ioctl will fail with ENOMEM.
91 91 *
92 92 * zfs_ioc_func_t *func
93 93 * The callback function that will perform the operation.
94 94 *
95 95 * The callback should return 0 on success, or an error number on
96 96 * failure. If the function fails, the userland ioctl will return -1,
97 97 * and errno will be set to the callback's return value. The callback
98 98 * will be called with the following arguments:
99 99 *
100 100 * const char *name
101 101 * The name of the pool or dataset to operate on, from
102 102 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the
103 103 * expected type (pool, dataset, or none).
104 104 *
105 105 * nvlist_t *innvl
106 106 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or
107 107 * NULL if no input nvlist was provided. Changes to this nvlist are
108 108 * ignored. If the input nvlist could not be deserialized, the
109 109 * ioctl will fail and the callback will not be called.
110 110 *
111 111 * nvlist_t *outnvl
112 112 * The output nvlist, initially empty. The callback can fill it in,
113 113 * and it will be returned to userland by serializing it into
114 114 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization
115 115 * fails (e.g. because the caller didn't supply a large enough
116 116 * buffer), then the overall ioctl will fail. See the
117 117 * 'smush_nvlist' argument above for additional behaviors.
118 118 *
119 119 * There are two typical uses of the output nvlist:
120 120 * - To return state, e.g. property values. In this case,
121 121 * smush_outnvlist should be false. If the buffer was not large
122 122 * enough, the caller will reallocate a larger buffer and try
123 123 * the ioctl again.
124 124 *
125 125 * - To return multiple errors from an ioctl which makes on-disk
126 126 * changes. In this case, smush_outnvlist should be true.
127 127 * Ioctls which make on-disk modifications should generally not
128 128 * use the outnvl if they succeed, because the caller can not
129 129 * distinguish between the operation failing, and
130 130 * deserialization failing.
131 131 */
132 132
133 133 #include <sys/types.h>
134 134 #include <sys/param.h>
135 135 #include <sys/errno.h>
136 136 #include <sys/uio.h>
137 137 #include <sys/buf.h>
138 138 #include <sys/modctl.h>
139 139 #include <sys/open.h>
140 140 #include <sys/file.h>
141 141 #include <sys/kmem.h>
142 142 #include <sys/conf.h>
143 143 #include <sys/cmn_err.h>
144 144 #include <sys/stat.h>
145 145 #include <sys/zfs_ioctl.h>
146 146 #include <sys/zfs_vfsops.h>
147 147 #include <sys/zfs_znode.h>
148 148 #include <sys/zap.h>
149 149 #include <sys/spa.h>
150 150 #include <sys/spa_impl.h>
151 151 #include <sys/vdev.h>
152 152 #include <sys/priv_impl.h>
153 153 #include <sys/dmu.h>
154 154 #include <sys/dsl_dir.h>
155 155 #include <sys/dsl_dataset.h>
156 156 #include <sys/dsl_prop.h>
157 157 #include <sys/dsl_deleg.h>
158 158 #include <sys/dmu_objset.h>
159 159 #include <sys/dmu_impl.h>
160 160 #include <sys/dmu_tx.h>
161 161 #include <sys/ddi.h>
162 162 #include <sys/sunddi.h>
163 163 #include <sys/sunldi.h>
164 164 #include <sys/policy.h>
165 165 #include <sys/zone.h>
166 166 #include <sys/nvpair.h>
167 167 #include <sys/pathname.h>
168 168 #include <sys/mount.h>
169 169 #include <sys/sdt.h>
170 170 #include <sys/fs/zfs.h>
171 171 #include <sys/zfs_ctldir.h>
172 172 #include <sys/zfs_dir.h>
173 173 #include <sys/zfs_onexit.h>
174 174 #include <sys/zvol.h>
175 175 #include <sys/dsl_scan.h>
176 176 #include <sharefs/share.h>
177 177 #include <sys/dmu_objset.h>
178 178 #include <sys/dmu_send.h>
179 179 #include <sys/dsl_destroy.h>
180 180 #include <sys/dsl_bookmark.h>
181 181 #include <sys/dsl_userhold.h>
182 182 #include <sys/zfeature.h>
183 183
184 184 #include "zfs_namecheck.h"
185 185 #include "zfs_prop.h"
186 186 #include "zfs_deleg.h"
187 187 #include "zfs_comutil.h"
188 188
189 189 extern struct modlfs zfs_modlfs;
190 190
191 191 extern void zfs_init(void);
192 192 extern void zfs_fini(void);
193 193
194 194 ldi_ident_t zfs_li = NULL;
195 195 dev_info_t *zfs_dip;
196 196
197 197 uint_t zfs_fsyncer_key;
198 198 extern uint_t rrw_tsd_key;
199 199 static uint_t zfs_allow_log_key;
200 200
201 201 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *);
202 202 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *);
203 203 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *);
204 204
205 205 typedef enum {
206 206 NO_NAME,
207 207 POOL_NAME,
208 208 DATASET_NAME
209 209 } zfs_ioc_namecheck_t;
210 210
211 211 typedef enum {
212 212 POOL_CHECK_NONE = 1 << 0,
213 213 POOL_CHECK_SUSPENDED = 1 << 1,
214 214 POOL_CHECK_READONLY = 1 << 2,
215 215 } zfs_ioc_poolcheck_t;
216 216
217 217 typedef struct zfs_ioc_vec {
218 218 zfs_ioc_legacy_func_t *zvec_legacy_func;
219 219 zfs_ioc_func_t *zvec_func;
220 220 zfs_secpolicy_func_t *zvec_secpolicy;
221 221 zfs_ioc_namecheck_t zvec_namecheck;
222 222 boolean_t zvec_allow_log;
223 223 zfs_ioc_poolcheck_t zvec_pool_check;
224 224 boolean_t zvec_smush_outnvlist;
225 225 const char *zvec_name;
226 226 } zfs_ioc_vec_t;
227 227
228 228 /* This array is indexed by zfs_userquota_prop_t */
229 229 static const char *userquota_perms[] = {
230 230 ZFS_DELEG_PERM_USERUSED,
231 231 ZFS_DELEG_PERM_USERQUOTA,
232 232 ZFS_DELEG_PERM_GROUPUSED,
233 233 ZFS_DELEG_PERM_GROUPQUOTA,
234 234 };
235 235
236 236 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc);
237 237 static int zfs_check_settable(const char *name, nvpair_t *property,
238 238 cred_t *cr);
239 239 static int zfs_check_clearable(char *dataset, nvlist_t *props,
240 240 nvlist_t **errors);
241 241 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *,
242 242 boolean_t *);
243 243 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *);
244 244 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp);
245 245
246 246 static int zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature);
247 247
248 248 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */
249 249 void
250 250 __dprintf(const char *file, const char *func, int line, const char *fmt, ...)
251 251 {
252 252 const char *newfile;
253 253 char buf[512];
254 254 va_list adx;
255 255
256 256 /*
257 257 * Get rid of annoying "../common/" prefix to filename.
258 258 */
259 259 newfile = strrchr(file, '/');
260 260 if (newfile != NULL) {
261 261 newfile = newfile + 1; /* Get rid of leading / */
262 262 } else {
263 263 newfile = file;
264 264 }
265 265
266 266 va_start(adx, fmt);
267 267 (void) vsnprintf(buf, sizeof (buf), fmt, adx);
268 268 va_end(adx);
269 269
270 270 /*
271 271 * To get this data, use the zfs-dprintf probe as so:
272 272 * dtrace -q -n 'zfs-dprintf \
273 273 * /stringof(arg0) == "dbuf.c"/ \
274 274 * {printf("%s: %s", stringof(arg1), stringof(arg3))}'
275 275 * arg0 = file name
276 276 * arg1 = function name
277 277 * arg2 = line number
278 278 * arg3 = message
279 279 */
280 280 DTRACE_PROBE4(zfs__dprintf,
281 281 char *, newfile, char *, func, int, line, char *, buf);
282 282 }
283 283
284 284 static void
285 285 history_str_free(char *buf)
286 286 {
287 287 kmem_free(buf, HIS_MAX_RECORD_LEN);
288 288 }
289 289
290 290 static char *
291 291 history_str_get(zfs_cmd_t *zc)
292 292 {
293 293 char *buf;
294 294
295 295 if (zc->zc_history == NULL)
296 296 return (NULL);
297 297
298 298 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP);
299 299 if (copyinstr((void *)(uintptr_t)zc->zc_history,
300 300 buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
301 301 history_str_free(buf);
302 302 return (NULL);
303 303 }
304 304
305 305 buf[HIS_MAX_RECORD_LEN -1] = '\0';
306 306
307 307 return (buf);
308 308 }
309 309
310 310 /*
311 311 * Check to see if the named dataset is currently defined as bootable
312 312 */
313 313 static boolean_t
314 314 zfs_is_bootfs(const char *name)
315 315 {
316 316 objset_t *os;
317 317
318 318 if (dmu_objset_hold(name, FTAG, &os) == 0) {
319 319 boolean_t ret;
320 320 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os)));
321 321 dmu_objset_rele(os, FTAG);
322 322 return (ret);
323 323 }
324 324 return (B_FALSE);
325 325 }
326 326
327 327 /*
328 328 * Return non-zero if the spa version is less than requested version.
329 329 */
330 330 static int
331 331 zfs_earlier_version(const char *name, int version)
332 332 {
333 333 spa_t *spa;
334 334
335 335 if (spa_open(name, &spa, FTAG) == 0) {
336 336 if (spa_version(spa) < version) {
337 337 spa_close(spa, FTAG);
338 338 return (1);
339 339 }
340 340 spa_close(spa, FTAG);
341 341 }
342 342 return (0);
343 343 }
344 344
345 345 /*
346 346 * Return TRUE if the ZPL version is less than requested version.
347 347 */
348 348 static boolean_t
349 349 zpl_earlier_version(const char *name, int version)
350 350 {
351 351 objset_t *os;
352 352 boolean_t rc = B_TRUE;
353 353
354 354 if (dmu_objset_hold(name, FTAG, &os) == 0) {
355 355 uint64_t zplversion;
356 356
357 357 if (dmu_objset_type(os) != DMU_OST_ZFS) {
358 358 dmu_objset_rele(os, FTAG);
359 359 return (B_TRUE);
360 360 }
361 361 /* XXX reading from non-owned objset */
362 362 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0)
363 363 rc = zplversion < version;
364 364 dmu_objset_rele(os, FTAG);
365 365 }
366 366 return (rc);
367 367 }
368 368
369 369 static void
370 370 zfs_log_history(zfs_cmd_t *zc)
371 371 {
372 372 spa_t *spa;
373 373 char *buf;
374 374
375 375 if ((buf = history_str_get(zc)) == NULL)
376 376 return;
377 377
378 378 if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
379 379 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
380 380 (void) spa_history_log(spa, buf);
381 381 spa_close(spa, FTAG);
382 382 }
383 383 history_str_free(buf);
384 384 }
385 385
386 386 /*
387 387 * Policy for top-level read operations (list pools). Requires no privileges,
388 388 * and can be used in the local zone, as there is no associated dataset.
389 389 */
390 390 /* ARGSUSED */
391 391 static int
392 392 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
393 393 {
394 394 return (0);
395 395 }
396 396
397 397 /*
398 398 * Policy for dataset read operations (list children, get statistics). Requires
399 399 * no privileges, but must be visible in the local zone.
400 400 */
401 401 /* ARGSUSED */
402 402 static int
403 403 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
404 404 {
405 405 if (INGLOBALZONE(curproc) ||
406 406 zone_dataset_visible(zc->zc_name, NULL))
407 407 return (0);
408 408
409 409 return (SET_ERROR(ENOENT));
410 410 }
411 411
412 412 static int
413 413 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr)
414 414 {
415 415 int writable = 1;
416 416
417 417 /*
418 418 * The dataset must be visible by this zone -- check this first
419 419 * so they don't see EPERM on something they shouldn't know about.
420 420 */
421 421 if (!INGLOBALZONE(curproc) &&
422 422 !zone_dataset_visible(dataset, &writable))
423 423 return (SET_ERROR(ENOENT));
424 424
425 425 if (INGLOBALZONE(curproc)) {
426 426 /*
427 427 * If the fs is zoned, only root can access it from the
428 428 * global zone.
429 429 */
430 430 if (secpolicy_zfs(cr) && zoned)
431 431 return (SET_ERROR(EPERM));
432 432 } else {
433 433 /*
434 434 * If we are in a local zone, the 'zoned' property must be set.
435 435 */
436 436 if (!zoned)
437 437 return (SET_ERROR(EPERM));
438 438
439 439 /* must be writable by this zone */
440 440 if (!writable)
441 441 return (SET_ERROR(EPERM));
442 442 }
443 443 return (0);
444 444 }
445 445
446 446 static int
447 447 zfs_dozonecheck(const char *dataset, cred_t *cr)
448 448 {
449 449 uint64_t zoned;
450 450
451 451 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
452 452 return (SET_ERROR(ENOENT));
453 453
454 454 return (zfs_dozonecheck_impl(dataset, zoned, cr));
455 455 }
456 456
457 457 static int
458 458 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr)
459 459 {
460 460 uint64_t zoned;
461 461
462 462 if (dsl_prop_get_int_ds(ds, "zoned", &zoned))
463 463 return (SET_ERROR(ENOENT));
464 464
465 465 return (zfs_dozonecheck_impl(dataset, zoned, cr));
466 466 }
467 467
468 468 static int
469 469 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds,
470 470 const char *perm, cred_t *cr)
471 471 {
472 472 int error;
473 473
474 474 error = zfs_dozonecheck_ds(name, ds, cr);
475 475 if (error == 0) {
476 476 error = secpolicy_zfs(cr);
477 477 if (error != 0)
478 478 error = dsl_deleg_access_impl(ds, perm, cr);
479 479 }
480 480 return (error);
481 481 }
482 482
483 483 static int
484 484 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
485 485 {
486 486 int error;
487 487 dsl_dataset_t *ds;
488 488 dsl_pool_t *dp;
489 489
490 490 error = dsl_pool_hold(name, FTAG, &dp);
491 491 if (error != 0)
492 492 return (error);
493 493
494 494 error = dsl_dataset_hold(dp, name, FTAG, &ds);
495 495 if (error != 0) {
496 496 dsl_pool_rele(dp, FTAG);
497 497 return (error);
498 498 }
499 499
500 500 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr);
501 501
502 502 dsl_dataset_rele(ds, FTAG);
503 503 dsl_pool_rele(dp, FTAG);
504 504 return (error);
505 505 }
506 506
507 507 /*
508 508 * Policy for setting the security label property.
509 509 *
510 510 * Returns 0 for success, non-zero for access and other errors.
511 511 */
512 512 static int
513 513 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr)
514 514 {
515 515 char ds_hexsl[MAXNAMELEN];
516 516 bslabel_t ds_sl, new_sl;
517 517 boolean_t new_default = FALSE;
518 518 uint64_t zoned;
519 519 int needed_priv = -1;
520 520 int error;
521 521
522 522 /* First get the existing dataset label. */
523 523 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL),
524 524 1, sizeof (ds_hexsl), &ds_hexsl, NULL);
525 525 if (error != 0)
526 526 return (SET_ERROR(EPERM));
527 527
528 528 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
529 529 new_default = TRUE;
530 530
531 531 /* The label must be translatable */
532 532 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0))
533 533 return (SET_ERROR(EINVAL));
534 534
535 535 /*
536 536 * In a non-global zone, disallow attempts to set a label that
537 537 * doesn't match that of the zone; otherwise no other checks
538 538 * are needed.
539 539 */
540 540 if (!INGLOBALZONE(curproc)) {
541 541 if (new_default || !blequal(&new_sl, CR_SL(CRED())))
542 542 return (SET_ERROR(EPERM));
543 543 return (0);
544 544 }
545 545
546 546 /*
547 547 * For global-zone datasets (i.e., those whose zoned property is
548 548 * "off", verify that the specified new label is valid for the
549 549 * global zone.
550 550 */
551 551 if (dsl_prop_get_integer(name,
552 552 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL))
553 553 return (SET_ERROR(EPERM));
554 554 if (!zoned) {
555 555 if (zfs_check_global_label(name, strval) != 0)
556 556 return (SET_ERROR(EPERM));
557 557 }
558 558
559 559 /*
560 560 * If the existing dataset label is nondefault, check if the
561 561 * dataset is mounted (label cannot be changed while mounted).
562 562 * Get the zfsvfs; if there isn't one, then the dataset isn't
563 563 * mounted (or isn't a dataset, doesn't exist, ...).
564 564 */
565 565 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) {
566 566 objset_t *os;
567 567 static char *setsl_tag = "setsl_tag";
568 568
569 569 /*
570 570 * Try to own the dataset; abort if there is any error,
571 571 * (e.g., already mounted, in use, or other error).
572 572 */
573 573 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE,
574 574 setsl_tag, &os);
575 575 if (error != 0)
576 576 return (SET_ERROR(EPERM));
577 577
578 578 dmu_objset_disown(os, setsl_tag);
579 579
580 580 if (new_default) {
581 581 needed_priv = PRIV_FILE_DOWNGRADE_SL;
582 582 goto out_check;
583 583 }
584 584
585 585 if (hexstr_to_label(strval, &new_sl) != 0)
586 586 return (SET_ERROR(EPERM));
587 587
588 588 if (blstrictdom(&ds_sl, &new_sl))
589 589 needed_priv = PRIV_FILE_DOWNGRADE_SL;
590 590 else if (blstrictdom(&new_sl, &ds_sl))
591 591 needed_priv = PRIV_FILE_UPGRADE_SL;
592 592 } else {
593 593 /* dataset currently has a default label */
594 594 if (!new_default)
595 595 needed_priv = PRIV_FILE_UPGRADE_SL;
596 596 }
597 597
598 598 out_check:
599 599 if (needed_priv != -1)
600 600 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL));
601 601 return (0);
602 602 }
603 603
604 604 static int
605 605 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval,
606 606 cred_t *cr)
607 607 {
608 608 char *strval;
609 609
610 610 /*
611 611 * Check permissions for special properties.
612 612 */
613 613 switch (prop) {
614 614 case ZFS_PROP_ZONED:
615 615 /*
616 616 * Disallow setting of 'zoned' from within a local zone.
617 617 */
618 618 if (!INGLOBALZONE(curproc))
619 619 return (SET_ERROR(EPERM));
620 620 break;
621 621
622 622 case ZFS_PROP_QUOTA:
623 623 case ZFS_PROP_FILESYSTEM_LIMIT:
624 624 case ZFS_PROP_SNAPSHOT_LIMIT:
625 625 if (!INGLOBALZONE(curproc)) {
626 626 uint64_t zoned;
627 627 char setpoint[MAXNAMELEN];
628 628 /*
629 629 * Unprivileged users are allowed to modify the
630 630 * limit on things *under* (ie. contained by)
631 631 * the thing they own.
632 632 */
633 633 if (dsl_prop_get_integer(dsname, "zoned", &zoned,
634 634 setpoint))
635 635 return (SET_ERROR(EPERM));
636 636 if (!zoned || strlen(dsname) <= strlen(setpoint))
637 637 return (SET_ERROR(EPERM));
638 638 }
639 639 break;
640 640
641 641 case ZFS_PROP_MLSLABEL:
642 642 if (!is_system_labeled())
643 643 return (SET_ERROR(EPERM));
644 644
645 645 if (nvpair_value_string(propval, &strval) == 0) {
646 646 int err;
647 647
648 648 err = zfs_set_slabel_policy(dsname, strval, CRED());
649 649 if (err != 0)
650 650 return (err);
651 651 }
652 652 break;
653 653 }
654 654
655 655 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr));
656 656 }
657 657
658 658 /* ARGSUSED */
659 659 static int
660 660 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
661 661 {
662 662 int error;
663 663
664 664 error = zfs_dozonecheck(zc->zc_name, cr);
665 665 if (error != 0)
666 666 return (error);
667 667
668 668 /*
669 669 * permission to set permissions will be evaluated later in
670 670 * dsl_deleg_can_allow()
671 671 */
672 672 return (0);
673 673 }
674 674
675 675 /* ARGSUSED */
676 676 static int
677 677 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
678 678 {
679 679 return (zfs_secpolicy_write_perms(zc->zc_name,
680 680 ZFS_DELEG_PERM_ROLLBACK, cr));
681 681 }
682 682
683 683 /* ARGSUSED */
684 684 static int
685 685 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
686 686 {
687 687 dsl_pool_t *dp;
688 688 dsl_dataset_t *ds;
689 689 char *cp;
690 690 int error;
691 691
692 692 /*
693 693 * Generate the current snapshot name from the given objsetid, then
694 694 * use that name for the secpolicy/zone checks.
695 695 */
696 696 cp = strchr(zc->zc_name, '@');
697 697 if (cp == NULL)
698 698 return (SET_ERROR(EINVAL));
699 699 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
700 700 if (error != 0)
701 701 return (error);
702 702
703 703 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
704 704 if (error != 0) {
705 705 dsl_pool_rele(dp, FTAG);
706 706 return (error);
707 707 }
708 708
709 709 dsl_dataset_name(ds, zc->zc_name);
710 710
711 711 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds,
712 712 ZFS_DELEG_PERM_SEND, cr);
713 713 dsl_dataset_rele(ds, FTAG);
714 714 dsl_pool_rele(dp, FTAG);
715 715
716 716 return (error);
717 717 }
718 718
719 719 /* ARGSUSED */
720 720 static int
721 721 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
722 722 {
723 723 return (zfs_secpolicy_write_perms(zc->zc_name,
724 724 ZFS_DELEG_PERM_SEND, cr));
725 725 }
726 726
727 727 /* ARGSUSED */
728 728 static int
729 729 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
730 730 {
731 731 vnode_t *vp;
732 732 int error;
733 733
734 734 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
735 735 NO_FOLLOW, NULL, &vp)) != 0)
736 736 return (error);
737 737
738 738 /* Now make sure mntpnt and dataset are ZFS */
739 739
740 740 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
741 741 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
742 742 zc->zc_name) != 0)) {
743 743 VN_RELE(vp);
744 744 return (SET_ERROR(EPERM));
745 745 }
746 746
747 747 VN_RELE(vp);
748 748 return (dsl_deleg_access(zc->zc_name,
749 749 ZFS_DELEG_PERM_SHARE, cr));
750 750 }
751 751
752 752 int
753 753 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
754 754 {
755 755 if (!INGLOBALZONE(curproc))
756 756 return (SET_ERROR(EPERM));
757 757
758 758 if (secpolicy_nfs(cr) == 0) {
759 759 return (0);
760 760 } else {
761 761 return (zfs_secpolicy_deleg_share(zc, innvl, cr));
762 762 }
763 763 }
764 764
765 765 int
766 766 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
767 767 {
768 768 if (!INGLOBALZONE(curproc))
769 769 return (SET_ERROR(EPERM));
770 770
771 771 if (secpolicy_smb(cr) == 0) {
772 772 return (0);
773 773 } else {
774 774 return (zfs_secpolicy_deleg_share(zc, innvl, cr));
775 775 }
776 776 }
777 777
778 778 static int
779 779 zfs_get_parent(const char *datasetname, char *parent, int parentsize)
780 780 {
781 781 char *cp;
782 782
783 783 /*
784 784 * Remove the @bla or /bla from the end of the name to get the parent.
785 785 */
786 786 (void) strncpy(parent, datasetname, parentsize);
787 787 cp = strrchr(parent, '@');
788 788 if (cp != NULL) {
789 789 cp[0] = '\0';
790 790 } else {
791 791 cp = strrchr(parent, '/');
792 792 if (cp == NULL)
793 793 return (SET_ERROR(ENOENT));
794 794 cp[0] = '\0';
795 795 }
796 796
797 797 return (0);
798 798 }
799 799
800 800 int
801 801 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
802 802 {
803 803 int error;
804 804
805 805 if ((error = zfs_secpolicy_write_perms(name,
806 806 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
807 807 return (error);
808 808
809 809 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
810 810 }
811 811
812 812 /* ARGSUSED */
813 813 static int
814 814 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
815 815 {
816 816 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
817 817 }
818 818
819 819 /*
820 820 * Destroying snapshots with delegated permissions requires
821 821 * descendant mount and destroy permissions.
822 822 */
823 823 /* ARGSUSED */
824 824 static int
825 825 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
826 826 {
827 827 nvlist_t *snaps;
828 828 nvpair_t *pair, *nextpair;
829 829 int error = 0;
830 830
831 831 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
832 832 return (SET_ERROR(EINVAL));
833 833 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
834 834 pair = nextpair) {
835 835 nextpair = nvlist_next_nvpair(snaps, pair);
836 836 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr);
837 837 if (error == ENOENT) {
838 838 /*
839 839 * Ignore any snapshots that don't exist (we consider
840 840 * them "already destroyed"). Remove the name from the
841 841 * nvl here in case the snapshot is created between
842 842 * now and when we try to destroy it (in which case
843 843 * we don't want to destroy it since we haven't
844 844 * checked for permission).
845 845 */
846 846 fnvlist_remove_nvpair(snaps, pair);
847 847 error = 0;
848 848 }
849 849 if (error != 0)
850 850 break;
851 851 }
852 852
853 853 return (error);
854 854 }
855 855
856 856 int
857 857 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
858 858 {
859 859 char parentname[MAXNAMELEN];
860 860 int error;
861 861
862 862 if ((error = zfs_secpolicy_write_perms(from,
863 863 ZFS_DELEG_PERM_RENAME, cr)) != 0)
864 864 return (error);
865 865
866 866 if ((error = zfs_secpolicy_write_perms(from,
867 867 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
868 868 return (error);
869 869
870 870 if ((error = zfs_get_parent(to, parentname,
871 871 sizeof (parentname))) != 0)
872 872 return (error);
873 873
874 874 if ((error = zfs_secpolicy_write_perms(parentname,
875 875 ZFS_DELEG_PERM_CREATE, cr)) != 0)
876 876 return (error);
877 877
878 878 if ((error = zfs_secpolicy_write_perms(parentname,
879 879 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
880 880 return (error);
881 881
882 882 return (error);
883 883 }
884 884
885 885 /* ARGSUSED */
886 886 static int
887 887 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
888 888 {
889 889 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));
890 890 }
891 891
892 892 /* ARGSUSED */
893 893 static int
894 894 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
895 895 {
896 896 dsl_pool_t *dp;
897 897 dsl_dataset_t *clone;
898 898 int error;
899 899
900 900 error = zfs_secpolicy_write_perms(zc->zc_name,
901 901 ZFS_DELEG_PERM_PROMOTE, cr);
902 902 if (error != 0)
903 903 return (error);
904 904
905 905 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
906 906 if (error != 0)
907 907 return (error);
908 908
909 909 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone);
910 910
911 911 if (error == 0) {
912 912 char parentname[MAXNAMELEN];
913 913 dsl_dataset_t *origin = NULL;
914 914 dsl_dir_t *dd;
915 915 dd = clone->ds_dir;
916 916
917 917 error = dsl_dataset_hold_obj(dd->dd_pool,
918 918 dsl_dir_phys(dd)->dd_origin_obj, FTAG, &origin);
919 919 if (error != 0) {
920 920 dsl_dataset_rele(clone, FTAG);
921 921 dsl_pool_rele(dp, FTAG);
922 922 return (error);
923 923 }
924 924
925 925 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone,
926 926 ZFS_DELEG_PERM_MOUNT, cr);
927 927
928 928 dsl_dataset_name(origin, parentname);
929 929 if (error == 0) {
930 930 error = zfs_secpolicy_write_perms_ds(parentname, origin,
931 931 ZFS_DELEG_PERM_PROMOTE, cr);
932 932 }
933 933 dsl_dataset_rele(clone, FTAG);
934 934 dsl_dataset_rele(origin, FTAG);
935 935 }
936 936 dsl_pool_rele(dp, FTAG);
937 937 return (error);
938 938 }
939 939
940 940 /* ARGSUSED */
941 941 static int
942 942 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
943 943 {
944 944 int error;
945 945
946 946 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
947 947 ZFS_DELEG_PERM_RECEIVE, cr)) != 0)
948 948 return (error);
949 949
950 950 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
951 951 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
952 952 return (error);
953 953
954 954 return (zfs_secpolicy_write_perms(zc->zc_name,
955 955 ZFS_DELEG_PERM_CREATE, cr));
956 956 }
957 957
958 958 int
959 959 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
960 960 {
961 961 return (zfs_secpolicy_write_perms(name,
962 962 ZFS_DELEG_PERM_SNAPSHOT, cr));
963 963 }
964 964
965 965 /*
966 966 * Check for permission to create each snapshot in the nvlist.
967 967 */
968 968 /* ARGSUSED */
969 969 static int
970 970 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
971 971 {
972 972 nvlist_t *snaps;
973 973 int error = 0;
974 974 nvpair_t *pair;
975 975
976 976 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
977 977 return (SET_ERROR(EINVAL));
978 978 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
979 979 pair = nvlist_next_nvpair(snaps, pair)) {
980 980 char *name = nvpair_name(pair);
981 981 char *atp = strchr(name, '@');
982 982
983 983 if (atp == NULL) {
984 984 error = SET_ERROR(EINVAL);
985 985 break;
986 986 }
987 987 *atp = '\0';
988 988 error = zfs_secpolicy_snapshot_perms(name, cr);
989 989 *atp = '@';
990 990 if (error != 0)
991 991 break;
992 992 }
993 993 return (error);
994 994 }
995 995
996 996 /*
997 997 * Check for permission to create each snapshot in the nvlist.
998 998 */
999 999 /* ARGSUSED */
1000 1000 static int
1001 1001 zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1002 1002 {
1003 1003 int error = 0;
1004 1004
1005 1005 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL);
1006 1006 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) {
1007 1007 char *name = nvpair_name(pair);
1008 1008 char *hashp = strchr(name, '#');
1009 1009
1010 1010 if (hashp == NULL) {
1011 1011 error = SET_ERROR(EINVAL);
1012 1012 break;
1013 1013 }
1014 1014 *hashp = '\0';
1015 1015 error = zfs_secpolicy_write_perms(name,
1016 1016 ZFS_DELEG_PERM_BOOKMARK, cr);
1017 1017 *hashp = '#';
1018 1018 if (error != 0)
1019 1019 break;
1020 1020 }
1021 1021 return (error);
1022 1022 }
1023 1023
1024 1024 /* ARGSUSED */
1025 1025 static int
1026 1026 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1027 1027 {
1028 1028 nvpair_t *pair, *nextpair;
1029 1029 int error = 0;
1030 1030
1031 1031 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL;
1032 1032 pair = nextpair) {
1033 1033 char *name = nvpair_name(pair);
1034 1034 char *hashp = strchr(name, '#');
1035 1035 nextpair = nvlist_next_nvpair(innvl, pair);
1036 1036
1037 1037 if (hashp == NULL) {
1038 1038 error = SET_ERROR(EINVAL);
1039 1039 break;
1040 1040 }
1041 1041
1042 1042 *hashp = '\0';
1043 1043 error = zfs_secpolicy_write_perms(name,
1044 1044 ZFS_DELEG_PERM_DESTROY, cr);
1045 1045 *hashp = '#';
1046 1046 if (error == ENOENT) {
1047 1047 /*
1048 1048 * Ignore any filesystems that don't exist (we consider
1049 1049 * their bookmarks "already destroyed"). Remove
1050 1050 * the name from the nvl here in case the filesystem
1051 1051 * is created between now and when we try to destroy
1052 1052 * the bookmark (in which case we don't want to
1053 1053 * destroy it since we haven't checked for permission).
1054 1054 */
1055 1055 fnvlist_remove_nvpair(innvl, pair);
1056 1056 error = 0;
1057 1057 }
1058 1058 if (error != 0)
1059 1059 break;
1060 1060 }
1061 1061
1062 1062 return (error);
1063 1063 }
1064 1064
1065 1065 /* ARGSUSED */
1066 1066 static int
1067 1067 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1068 1068 {
1069 1069 /*
1070 1070 * Even root must have a proper TSD so that we know what pool
1071 1071 * to log to.
1072 1072 */
1073 1073 if (tsd_get(zfs_allow_log_key) == NULL)
1074 1074 return (SET_ERROR(EPERM));
1075 1075 return (0);
1076 1076 }
1077 1077
1078 1078 static int
1079 1079 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1080 1080 {
1081 1081 char parentname[MAXNAMELEN];
1082 1082 int error;
1083 1083 char *origin;
1084 1084
1085 1085 if ((error = zfs_get_parent(zc->zc_name, parentname,
1086 1086 sizeof (parentname))) != 0)
1087 1087 return (error);
1088 1088
1089 1089 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 &&
1090 1090 (error = zfs_secpolicy_write_perms(origin,
1091 1091 ZFS_DELEG_PERM_CLONE, cr)) != 0)
1092 1092 return (error);
1093 1093
1094 1094 if ((error = zfs_secpolicy_write_perms(parentname,
1095 1095 ZFS_DELEG_PERM_CREATE, cr)) != 0)
1096 1096 return (error);
1097 1097
1098 1098 return (zfs_secpolicy_write_perms(parentname,
1099 1099 ZFS_DELEG_PERM_MOUNT, cr));
1100 1100 }
1101 1101
1102 1102 /*
1103 1103 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires
1104 1104 * SYS_CONFIG privilege, which is not available in a local zone.
1105 1105 */
1106 1106 /* ARGSUSED */
1107 1107 static int
1108 1108 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1109 1109 {
1110 1110 if (secpolicy_sys_config(cr, B_FALSE) != 0)
1111 1111 return (SET_ERROR(EPERM));
1112 1112
1113 1113 return (0);
1114 1114 }
1115 1115
1116 1116 /*
1117 1117 * Policy for object to name lookups.
1118 1118 */
1119 1119 /* ARGSUSED */
1120 1120 static int
1121 1121 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1122 1122 {
1123 1123 int error;
1124 1124
1125 1125 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0)
1126 1126 return (0);
1127 1127
1128 1128 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr);
1129 1129 return (error);
1130 1130 }
1131 1131
1132 1132 /*
1133 1133 * Policy for fault injection. Requires all privileges.
1134 1134 */
1135 1135 /* ARGSUSED */
1136 1136 static int
1137 1137 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1138 1138 {
1139 1139 return (secpolicy_zinject(cr));
1140 1140 }
1141 1141
1142 1142 /* ARGSUSED */
1143 1143 static int
1144 1144 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1145 1145 {
1146 1146 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
1147 1147
1148 1148 if (prop == ZPROP_INVAL) {
1149 1149 if (!zfs_prop_user(zc->zc_value))
1150 1150 return (SET_ERROR(EINVAL));
1151 1151 return (zfs_secpolicy_write_perms(zc->zc_name,
1152 1152 ZFS_DELEG_PERM_USERPROP, cr));
1153 1153 } else {
1154 1154 return (zfs_secpolicy_setprop(zc->zc_name, prop,
1155 1155 NULL, cr));
1156 1156 }
1157 1157 }
1158 1158
1159 1159 static int
1160 1160 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1161 1161 {
1162 1162 int err = zfs_secpolicy_read(zc, innvl, cr);
1163 1163 if (err)
1164 1164 return (err);
1165 1165
1166 1166 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
1167 1167 return (SET_ERROR(EINVAL));
1168 1168
1169 1169 if (zc->zc_value[0] == 0) {
1170 1170 /*
1171 1171 * They are asking about a posix uid/gid. If it's
1172 1172 * themself, allow it.
1173 1173 */
1174 1174 if (zc->zc_objset_type == ZFS_PROP_USERUSED ||
1175 1175 zc->zc_objset_type == ZFS_PROP_USERQUOTA) {
1176 1176 if (zc->zc_guid == crgetuid(cr))
1177 1177 return (0);
1178 1178 } else {
1179 1179 if (groupmember(zc->zc_guid, cr))
1180 1180 return (0);
1181 1181 }
1182 1182 }
1183 1183
1184 1184 return (zfs_secpolicy_write_perms(zc->zc_name,
1185 1185 userquota_perms[zc->zc_objset_type], cr));
1186 1186 }
1187 1187
1188 1188 static int
1189 1189 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1190 1190 {
1191 1191 int err = zfs_secpolicy_read(zc, innvl, cr);
1192 1192 if (err)
1193 1193 return (err);
1194 1194
1195 1195 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
1196 1196 return (SET_ERROR(EINVAL));
1197 1197
1198 1198 return (zfs_secpolicy_write_perms(zc->zc_name,
1199 1199 userquota_perms[zc->zc_objset_type], cr));
1200 1200 }
1201 1201
1202 1202 /* ARGSUSED */
1203 1203 static int
1204 1204 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1205 1205 {
1206 1206 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION,
1207 1207 NULL, cr));
1208 1208 }
1209 1209
1210 1210 /* ARGSUSED */
1211 1211 static int
1212 1212 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1213 1213 {
1214 1214 nvpair_t *pair;
1215 1215 nvlist_t *holds;
1216 1216 int error;
1217 1217
1218 1218 error = nvlist_lookup_nvlist(innvl, "holds", &holds);
1219 1219 if (error != 0)
1220 1220 return (SET_ERROR(EINVAL));
1221 1221
1222 1222 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
1223 1223 pair = nvlist_next_nvpair(holds, pair)) {
1224 1224 char fsname[MAXNAMELEN];
1225 1225 error = dmu_fsname(nvpair_name(pair), fsname);
1226 1226 if (error != 0)
1227 1227 return (error);
1228 1228 error = zfs_secpolicy_write_perms(fsname,
1229 1229 ZFS_DELEG_PERM_HOLD, cr);
1230 1230 if (error != 0)
1231 1231 return (error);
1232 1232 }
1233 1233 return (0);
1234 1234 }
1235 1235
1236 1236 /* ARGSUSED */
1237 1237 static int
1238 1238 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1239 1239 {
1240 1240 nvpair_t *pair;
1241 1241 int error;
1242 1242
1243 1243 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL;
1244 1244 pair = nvlist_next_nvpair(innvl, pair)) {
1245 1245 char fsname[MAXNAMELEN];
1246 1246 error = dmu_fsname(nvpair_name(pair), fsname);
1247 1247 if (error != 0)
1248 1248 return (error);
1249 1249 error = zfs_secpolicy_write_perms(fsname,
1250 1250 ZFS_DELEG_PERM_RELEASE, cr);
1251 1251 if (error != 0)
1252 1252 return (error);
1253 1253 }
1254 1254 return (0);
1255 1255 }
1256 1256
1257 1257 /*
1258 1258 * Policy for allowing temporary snapshots to be taken or released
1259 1259 */
1260 1260 static int
1261 1261 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1262 1262 {
1263 1263 /*
1264 1264 * A temporary snapshot is the same as a snapshot,
1265 1265 * hold, destroy and release all rolled into one.
1266 1266 * Delegated diff alone is sufficient that we allow this.
1267 1267 */
1268 1268 int error;
1269 1269
1270 1270 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
1271 1271 ZFS_DELEG_PERM_DIFF, cr)) == 0)
1272 1272 return (0);
1273 1273
1274 1274 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr);
1275 1275 if (error == 0)
1276 1276 error = zfs_secpolicy_hold(zc, innvl, cr);
1277 1277 if (error == 0)
1278 1278 error = zfs_secpolicy_release(zc, innvl, cr);
1279 1279 if (error == 0)
1280 1280 error = zfs_secpolicy_destroy(zc, innvl, cr);
1281 1281 return (error);
1282 1282 }
1283 1283
1284 1284 /*
1285 1285 * Returns the nvlist as specified by the user in the zfs_cmd_t.
1286 1286 */
1287 1287 static int
1288 1288 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp)
1289 1289 {
1290 1290 char *packed;
1291 1291 int error;
1292 1292 nvlist_t *list = NULL;
1293 1293
1294 1294 /*
1295 1295 * Read in and unpack the user-supplied nvlist.
1296 1296 */
1297 1297 if (size == 0)
1298 1298 return (SET_ERROR(EINVAL));
1299 1299
1300 1300 packed = kmem_alloc(size, KM_SLEEP);
1301 1301
1302 1302 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
1303 1303 iflag)) != 0) {
1304 1304 kmem_free(packed, size);
1305 1305 return (error);
1306 1306 }
1307 1307
1308 1308 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) {
1309 1309 kmem_free(packed, size);
1310 1310 return (error);
1311 1311 }
1312 1312
1313 1313 kmem_free(packed, size);
1314 1314
1315 1315 *nvp = list;
1316 1316 return (0);
1317 1317 }
1318 1318
1319 1319 /*
1320 1320 * Reduce the size of this nvlist until it can be serialized in 'max' bytes.
1321 1321 * Entries will be removed from the end of the nvlist, and one int32 entry
1322 1322 * named "N_MORE_ERRORS" will be added indicating how many entries were
1323 1323 * removed.
1324 1324 */
1325 1325 static int
1326 1326 nvlist_smush(nvlist_t *errors, size_t max)
1327 1327 {
1328 1328 size_t size;
1329 1329
1330 1330 size = fnvlist_size(errors);
1331 1331
1332 1332 if (size > max) {
1333 1333 nvpair_t *more_errors;
1334 1334 int n = 0;
1335 1335
1336 1336 if (max < 1024)
1337 1337 return (SET_ERROR(ENOMEM));
1338 1338
1339 1339 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0);
1340 1340 more_errors = nvlist_prev_nvpair(errors, NULL);
1341 1341
1342 1342 do {
1343 1343 nvpair_t *pair = nvlist_prev_nvpair(errors,
1344 1344 more_errors);
1345 1345 fnvlist_remove_nvpair(errors, pair);
1346 1346 n++;
1347 1347 size = fnvlist_size(errors);
1348 1348 } while (size > max);
1349 1349
1350 1350 fnvlist_remove_nvpair(errors, more_errors);
1351 1351 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n);
1352 1352 ASSERT3U(fnvlist_size(errors), <=, max);
1353 1353 }
1354 1354
1355 1355 return (0);
1356 1356 }
1357 1357
1358 1358 static int
1359 1359 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
1360 1360 {
1361 1361 char *packed = NULL;
1362 1362 int error = 0;
1363 1363 size_t size;
1364 1364
1365 1365 size = fnvlist_size(nvl);
1366 1366
1367 1367 if (size > zc->zc_nvlist_dst_size) {
1368 1368 error = SET_ERROR(ENOMEM);
1369 1369 } else {
1370 1370 packed = fnvlist_pack(nvl, &size);
1371 1371 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
1372 1372 size, zc->zc_iflags) != 0)
1373 1373 error = SET_ERROR(EFAULT);
1374 1374 fnvlist_pack_free(packed, size);
1375 1375 }
1376 1376
1377 1377 zc->zc_nvlist_dst_size = size;
1378 1378 zc->zc_nvlist_dst_filled = B_TRUE;
1379 1379 return (error);
1380 1380 }
1381 1381
1382 1382 static int
1383 1383 getzfsvfs(const char *dsname, zfsvfs_t **zfvp)
1384 1384 {
1385 1385 objset_t *os;
1386 1386 int error;
1387 1387
1388 1388 error = dmu_objset_hold(dsname, FTAG, &os);
1389 1389 if (error != 0)
1390 1390 return (error);
1391 1391 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1392 1392 dmu_objset_rele(os, FTAG);
1393 1393 return (SET_ERROR(EINVAL));
1394 1394 }
1395 1395
1396 1396 mutex_enter(&os->os_user_ptr_lock);
1397 1397 *zfvp = dmu_objset_get_user(os);
1398 1398 if (*zfvp) {
1399 1399 VFS_HOLD((*zfvp)->z_vfs);
1400 1400 } else {
1401 1401 error = SET_ERROR(ESRCH);
1402 1402 }
1403 1403 mutex_exit(&os->os_user_ptr_lock);
1404 1404 dmu_objset_rele(os, FTAG);
1405 1405 return (error);
1406 1406 }
1407 1407
1408 1408 /*
1409 1409 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which
1410 1410 * case its z_vfs will be NULL, and it will be opened as the owner.
1411 1411 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER,
1412 1412 * which prevents all vnode ops from running.
1413 1413 */
1414 1414 static int
1415 1415 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer)
1416 1416 {
1417 1417 int error = 0;
1418 1418
1419 1419 if (getzfsvfs(name, zfvp) != 0)
1420 1420 error = zfsvfs_create(name, zfvp);
1421 1421 if (error == 0) {
1422 1422 rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER :
1423 1423 RW_READER, tag);
1424 1424 if ((*zfvp)->z_unmounted) {
1425 1425 /*
1426 1426 * XXX we could probably try again, since the unmounting
1427 1427 * thread should be just about to disassociate the
1428 1428 * objset from the zfsvfs.
1429 1429 */
1430 1430 rrm_exit(&(*zfvp)->z_teardown_lock, tag);
1431 1431 return (SET_ERROR(EBUSY));
1432 1432 }
1433 1433 }
1434 1434 return (error);
1435 1435 }
1436 1436
1437 1437 static void
1438 1438 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag)
1439 1439 {
1440 1440 rrm_exit(&zfsvfs->z_teardown_lock, tag);
1441 1441
1442 1442 if (zfsvfs->z_vfs) {
1443 1443 VFS_RELE(zfsvfs->z_vfs);
1444 1444 } else {
1445 1445 dmu_objset_disown(zfsvfs->z_os, zfsvfs);
1446 1446 zfsvfs_free(zfsvfs);
1447 1447 }
1448 1448 }
1449 1449
1450 1450 static int
1451 1451 zfs_ioc_pool_create(zfs_cmd_t *zc)
1452 1452 {
1453 1453 int error;
1454 1454 nvlist_t *config, *props = NULL;
1455 1455 nvlist_t *rootprops = NULL;
1456 1456 nvlist_t *zplprops = NULL;
1457 1457
1458 1458 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1459 1459 zc->zc_iflags, &config))
1460 1460 return (error);
1461 1461
1462 1462 if (zc->zc_nvlist_src_size != 0 && (error =
1463 1463 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1464 1464 zc->zc_iflags, &props))) {
1465 1465 nvlist_free(config);
1466 1466 return (error);
1467 1467 }
1468 1468
1469 1469 if (props) {
1470 1470 nvlist_t *nvl = NULL;
1471 1471 uint64_t version = SPA_VERSION;
1472 1472
1473 1473 (void) nvlist_lookup_uint64(props,
1474 1474 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version);
1475 1475 if (!SPA_VERSION_IS_SUPPORTED(version)) {
1476 1476 error = SET_ERROR(EINVAL);
1477 1477 goto pool_props_bad;
1478 1478 }
1479 1479 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl);
1480 1480 if (nvl) {
1481 1481 error = nvlist_dup(nvl, &rootprops, KM_SLEEP);
1482 1482 if (error != 0) {
1483 1483 nvlist_free(config);
1484 1484 nvlist_free(props);
1485 1485 return (error);
1486 1486 }
1487 1487 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS);
1488 1488 }
1489 1489 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1490 1490 error = zfs_fill_zplprops_root(version, rootprops,
1491 1491 zplprops, NULL);
1492 1492 if (error != 0)
1493 1493 goto pool_props_bad;
1494 1494 }
1495 1495
1496 1496 error = spa_create(zc->zc_name, config, props, zplprops);
1497 1497
1498 1498 /*
1499 1499 * Set the remaining root properties
1500 1500 */
1501 1501 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name,
1502 1502 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0)
1503 1503 (void) spa_destroy(zc->zc_name);
1504 1504
1505 1505 pool_props_bad:
1506 1506 nvlist_free(rootprops);
1507 1507 nvlist_free(zplprops);
1508 1508 nvlist_free(config);
1509 1509 nvlist_free(props);
1510 1510
1511 1511 return (error);
1512 1512 }
1513 1513
1514 1514 static int
1515 1515 zfs_ioc_pool_destroy(zfs_cmd_t *zc)
1516 1516 {
1517 1517 int error;
1518 1518 zfs_log_history(zc);
1519 1519 error = spa_destroy(zc->zc_name);
1520 1520 if (error == 0)
1521 1521 zvol_remove_minors(zc->zc_name);
1522 1522 return (error);
1523 1523 }
1524 1524
1525 1525 static int
1526 1526 zfs_ioc_pool_import(zfs_cmd_t *zc)
1527 1527 {
1528 1528 nvlist_t *config, *props = NULL;
1529 1529 uint64_t guid;
1530 1530 int error;
1531 1531
1532 1532 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1533 1533 zc->zc_iflags, &config)) != 0)
1534 1534 return (error);
1535 1535
1536 1536 if (zc->zc_nvlist_src_size != 0 && (error =
1537 1537 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1538 1538 zc->zc_iflags, &props))) {
1539 1539 nvlist_free(config);
1540 1540 return (error);
1541 1541 }
1542 1542
1543 1543 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
1544 1544 guid != zc->zc_guid)
1545 1545 error = SET_ERROR(EINVAL);
1546 1546 else
1547 1547 error = spa_import(zc->zc_name, config, props, zc->zc_cookie);
1548 1548
1549 1549 if (zc->zc_nvlist_dst != 0) {
1550 1550 int err;
1551 1551
1552 1552 if ((err = put_nvlist(zc, config)) != 0)
1553 1553 error = err;
1554 1554 }
1555 1555
1556 1556 nvlist_free(config);
1557 1557
1558 1558 if (props)
1559 1559 nvlist_free(props);
1560 1560
1561 1561 return (error);
1562 1562 }
1563 1563
1564 1564 static int
1565 1565 zfs_ioc_pool_export(zfs_cmd_t *zc)
1566 1566 {
1567 1567 int error;
1568 1568 boolean_t force = (boolean_t)zc->zc_cookie;
1569 1569 boolean_t hardforce = (boolean_t)zc->zc_guid;
1570 1570
1571 1571 zfs_log_history(zc);
1572 1572 error = spa_export(zc->zc_name, NULL, force, hardforce);
1573 1573 if (error == 0)
1574 1574 zvol_remove_minors(zc->zc_name);
1575 1575 return (error);
1576 1576 }
1577 1577
1578 1578 static int
1579 1579 zfs_ioc_pool_configs(zfs_cmd_t *zc)
1580 1580 {
1581 1581 nvlist_t *configs;
1582 1582 int error;
1583 1583
1584 1584 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
1585 1585 return (SET_ERROR(EEXIST));
1586 1586
1587 1587 error = put_nvlist(zc, configs);
1588 1588
1589 1589 nvlist_free(configs);
1590 1590
1591 1591 return (error);
1592 1592 }
1593 1593
1594 1594 /*
1595 1595 * inputs:
1596 1596 * zc_name name of the pool
1597 1597 *
1598 1598 * outputs:
1599 1599 * zc_cookie real errno
1600 1600 * zc_nvlist_dst config nvlist
1601 1601 * zc_nvlist_dst_size size of config nvlist
1602 1602 */
1603 1603 static int
1604 1604 zfs_ioc_pool_stats(zfs_cmd_t *zc)
1605 1605 {
1606 1606 nvlist_t *config;
1607 1607 int error;
1608 1608 int ret = 0;
1609 1609
1610 1610 error = spa_get_stats(zc->zc_name, &config, zc->zc_value,
1611 1611 sizeof (zc->zc_value));
1612 1612
1613 1613 if (config != NULL) {
1614 1614 ret = put_nvlist(zc, config);
1615 1615 nvlist_free(config);
1616 1616
1617 1617 /*
1618 1618 * The config may be present even if 'error' is non-zero.
1619 1619 * In this case we return success, and preserve the real errno
1620 1620 * in 'zc_cookie'.
1621 1621 */
1622 1622 zc->zc_cookie = error;
1623 1623 } else {
1624 1624 ret = error;
1625 1625 }
1626 1626
1627 1627 return (ret);
1628 1628 }
1629 1629
1630 1630 /*
1631 1631 * Try to import the given pool, returning pool stats as appropriate so that
1632 1632 * user land knows which devices are available and overall pool health.
1633 1633 */
1634 1634 static int
1635 1635 zfs_ioc_pool_tryimport(zfs_cmd_t *zc)
1636 1636 {
1637 1637 nvlist_t *tryconfig, *config;
1638 1638 int error;
1639 1639
1640 1640 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1641 1641 zc->zc_iflags, &tryconfig)) != 0)
1642 1642 return (error);
1643 1643
1644 1644 config = spa_tryimport(tryconfig);
1645 1645
1646 1646 nvlist_free(tryconfig);
1647 1647
1648 1648 if (config == NULL)
1649 1649 return (SET_ERROR(EINVAL));
1650 1650
1651 1651 error = put_nvlist(zc, config);
1652 1652 nvlist_free(config);
1653 1653
1654 1654 return (error);
1655 1655 }
1656 1656
1657 1657 /*
1658 1658 * inputs:
1659 1659 * zc_name name of the pool
1660 1660 * zc_cookie scan func (pool_scan_func_t)
1661 1661 */
1662 1662 static int
1663 1663 zfs_ioc_pool_scan(zfs_cmd_t *zc)
1664 1664 {
1665 1665 spa_t *spa;
1666 1666 int error;
1667 1667
1668 1668 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1669 1669 return (error);
1670 1670
1671 1671 if (zc->zc_cookie == POOL_SCAN_NONE)
1672 1672 error = spa_scan_stop(spa);
1673 1673 else
1674 1674 error = spa_scan(spa, zc->zc_cookie);
1675 1675
1676 1676 spa_close(spa, FTAG);
1677 1677
1678 1678 return (error);
1679 1679 }
1680 1680
1681 1681 static int
1682 1682 zfs_ioc_pool_freeze(zfs_cmd_t *zc)
1683 1683 {
1684 1684 spa_t *spa;
1685 1685 int error;
1686 1686
1687 1687 error = spa_open(zc->zc_name, &spa, FTAG);
1688 1688 if (error == 0) {
1689 1689 spa_freeze(spa);
1690 1690 spa_close(spa, FTAG);
1691 1691 }
1692 1692 return (error);
1693 1693 }
1694 1694
1695 1695 static int
1696 1696 zfs_ioc_pool_upgrade(zfs_cmd_t *zc)
1697 1697 {
1698 1698 spa_t *spa;
1699 1699 int error;
1700 1700
1701 1701 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1702 1702 return (error);
1703 1703
1704 1704 if (zc->zc_cookie < spa_version(spa) ||
1705 1705 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) {
1706 1706 spa_close(spa, FTAG);
1707 1707 return (SET_ERROR(EINVAL));
1708 1708 }
1709 1709
1710 1710 spa_upgrade(spa, zc->zc_cookie);
1711 1711 spa_close(spa, FTAG);
1712 1712
1713 1713 return (error);
1714 1714 }
1715 1715
1716 1716 static int
1717 1717 zfs_ioc_pool_get_history(zfs_cmd_t *zc)
1718 1718 {
1719 1719 spa_t *spa;
1720 1720 char *hist_buf;
1721 1721 uint64_t size;
1722 1722 int error;
1723 1723
1724 1724 if ((size = zc->zc_history_len) == 0)
1725 1725 return (SET_ERROR(EINVAL));
1726 1726
1727 1727 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1728 1728 return (error);
1729 1729
1730 1730 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
1731 1731 spa_close(spa, FTAG);
1732 1732 return (SET_ERROR(ENOTSUP));
1733 1733 }
1734 1734
1735 1735 hist_buf = kmem_alloc(size, KM_SLEEP);
1736 1736 if ((error = spa_history_get(spa, &zc->zc_history_offset,
1737 1737 &zc->zc_history_len, hist_buf)) == 0) {
1738 1738 error = ddi_copyout(hist_buf,
1739 1739 (void *)(uintptr_t)zc->zc_history,
1740 1740 zc->zc_history_len, zc->zc_iflags);
1741 1741 }
1742 1742
1743 1743 spa_close(spa, FTAG);
1744 1744 kmem_free(hist_buf, size);
1745 1745 return (error);
1746 1746 }
1747 1747
1748 1748 static int
1749 1749 zfs_ioc_pool_reguid(zfs_cmd_t *zc)
1750 1750 {
1751 1751 spa_t *spa;
1752 1752 int error;
1753 1753
1754 1754 error = spa_open(zc->zc_name, &spa, FTAG);
1755 1755 if (error == 0) {
1756 1756 error = spa_change_guid(spa);
1757 1757 spa_close(spa, FTAG);
1758 1758 }
1759 1759 return (error);
1760 1760 }
1761 1761
1762 1762 static int
1763 1763 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
1764 1764 {
1765 1765 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value));
1766 1766 }
1767 1767
1768 1768 /*
1769 1769 * inputs:
1770 1770 * zc_name name of filesystem
1771 1771 * zc_obj object to find
1772 1772 *
1773 1773 * outputs:
1774 1774 * zc_value name of object
1775 1775 */
1776 1776 static int
1777 1777 zfs_ioc_obj_to_path(zfs_cmd_t *zc)
1778 1778 {
1779 1779 objset_t *os;
1780 1780 int error;
1781 1781
1782 1782 /* XXX reading from objset not owned */
1783 1783 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1784 1784 return (error);
1785 1785 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1786 1786 dmu_objset_rele(os, FTAG);
1787 1787 return (SET_ERROR(EINVAL));
1788 1788 }
1789 1789 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value,
1790 1790 sizeof (zc->zc_value));
1791 1791 dmu_objset_rele(os, FTAG);
1792 1792
1793 1793 return (error);
1794 1794 }
1795 1795
1796 1796 /*
1797 1797 * inputs:
1798 1798 * zc_name name of filesystem
1799 1799 * zc_obj object to find
1800 1800 *
1801 1801 * outputs:
1802 1802 * zc_stat stats on object
1803 1803 * zc_value path to object
1804 1804 */
1805 1805 static int
1806 1806 zfs_ioc_obj_to_stats(zfs_cmd_t *zc)
1807 1807 {
1808 1808 objset_t *os;
1809 1809 int error;
1810 1810
1811 1811 /* XXX reading from objset not owned */
1812 1812 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1813 1813 return (error);
1814 1814 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1815 1815 dmu_objset_rele(os, FTAG);
1816 1816 return (SET_ERROR(EINVAL));
1817 1817 }
1818 1818 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value,
1819 1819 sizeof (zc->zc_value));
1820 1820 dmu_objset_rele(os, FTAG);
1821 1821
1822 1822 return (error);
1823 1823 }
1824 1824
1825 1825 static int
1826 1826 zfs_ioc_vdev_add(zfs_cmd_t *zc)
1827 1827 {
1828 1828 spa_t *spa;
1829 1829 int error;
1830 1830 nvlist_t *config, **l2cache, **spares;
1831 1831 uint_t nl2cache = 0, nspares = 0;
1832 1832
1833 1833 error = spa_open(zc->zc_name, &spa, FTAG);
1834 1834 if (error != 0)
1835 1835 return (error);
1836 1836
1837 1837 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1838 1838 zc->zc_iflags, &config);
1839 1839 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
1840 1840 &l2cache, &nl2cache);
1841 1841
1842 1842 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
1843 1843 &spares, &nspares);
1844 1844
1845 1845 /*
1846 1846 * A root pool with concatenated devices is not supported.
1847 1847 * Thus, can not add a device to a root pool.
1848 1848 *
1849 1849 * Intent log device can not be added to a rootpool because
1850 1850 * during mountroot, zil is replayed, a seperated log device
1851 1851 * can not be accessed during the mountroot time.
1852 1852 *
1853 1853 * l2cache and spare devices are ok to be added to a rootpool.
1854 1854 */
1855 1855 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) {
1856 1856 nvlist_free(config);
1857 1857 spa_close(spa, FTAG);
1858 1858 return (SET_ERROR(EDOM));
1859 1859 }
1860 1860
1861 1861 if (error == 0) {
1862 1862 error = spa_vdev_add(spa, config);
1863 1863 nvlist_free(config);
1864 1864 }
1865 1865 spa_close(spa, FTAG);
1866 1866 return (error);
1867 1867 }
1868 1868
1869 1869 /*
1870 1870 * inputs:
1871 1871 * zc_name name of the pool
1872 1872 * zc_nvlist_conf nvlist of devices to remove
1873 1873 * zc_cookie to stop the remove?
1874 1874 */
1875 1875 static int
1876 1876 zfs_ioc_vdev_remove(zfs_cmd_t *zc)
1877 1877 {
1878 1878 spa_t *spa;
1879 1879 int error;
1880 1880
1881 1881 error = spa_open(zc->zc_name, &spa, FTAG);
1882 1882 if (error != 0)
1883 1883 return (error);
1884 1884 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE);
1885 1885 spa_close(spa, FTAG);
1886 1886 return (error);
1887 1887 }
1888 1888
1889 1889 static int
1890 1890 zfs_ioc_vdev_set_state(zfs_cmd_t *zc)
1891 1891 {
1892 1892 spa_t *spa;
1893 1893 int error;
1894 1894 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
1895 1895
1896 1896 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1897 1897 return (error);
1898 1898 switch (zc->zc_cookie) {
1899 1899 case VDEV_STATE_ONLINE:
1900 1900 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate);
1901 1901 break;
1902 1902
1903 1903 case VDEV_STATE_OFFLINE:
1904 1904 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj);
1905 1905 break;
1906 1906
1907 1907 case VDEV_STATE_FAULTED:
1908 1908 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1909 1909 zc->zc_obj != VDEV_AUX_EXTERNAL)
1910 1910 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1911 1911
1912 1912 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj);
1913 1913 break;
1914 1914
1915 1915 case VDEV_STATE_DEGRADED:
1916 1916 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1917 1917 zc->zc_obj != VDEV_AUX_EXTERNAL)
1918 1918 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1919 1919
1920 1920 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj);
1921 1921 break;
1922 1922
1923 1923 default:
1924 1924 error = SET_ERROR(EINVAL);
1925 1925 }
1926 1926 zc->zc_cookie = newstate;
1927 1927 spa_close(spa, FTAG);
1928 1928 return (error);
1929 1929 }
1930 1930
1931 1931 static int
1932 1932 zfs_ioc_vdev_attach(zfs_cmd_t *zc)
1933 1933 {
1934 1934 spa_t *spa;
1935 1935 int replacing = zc->zc_cookie;
1936 1936 nvlist_t *config;
1937 1937 int error;
1938 1938
1939 1939 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1940 1940 return (error);
1941 1941
1942 1942 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1943 1943 zc->zc_iflags, &config)) == 0) {
1944 1944 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
1945 1945 nvlist_free(config);
1946 1946 }
1947 1947
1948 1948 spa_close(spa, FTAG);
1949 1949 return (error);
1950 1950 }
1951 1951
1952 1952 static int
1953 1953 zfs_ioc_vdev_detach(zfs_cmd_t *zc)
1954 1954 {
1955 1955 spa_t *spa;
1956 1956 int error;
1957 1957
1958 1958 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1959 1959 return (error);
1960 1960
1961 1961 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE);
1962 1962
1963 1963 spa_close(spa, FTAG);
1964 1964 return (error);
1965 1965 }
1966 1966
1967 1967 static int
1968 1968 zfs_ioc_vdev_split(zfs_cmd_t *zc)
1969 1969 {
1970 1970 spa_t *spa;
1971 1971 nvlist_t *config, *props = NULL;
1972 1972 int error;
1973 1973 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT);
1974 1974
1975 1975 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1976 1976 return (error);
1977 1977
1978 1978 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1979 1979 zc->zc_iflags, &config)) {
1980 1980 spa_close(spa, FTAG);
1981 1981 return (error);
1982 1982 }
1983 1983
1984 1984 if (zc->zc_nvlist_src_size != 0 && (error =
1985 1985 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1986 1986 zc->zc_iflags, &props))) {
1987 1987 spa_close(spa, FTAG);
1988 1988 nvlist_free(config);
1989 1989 return (error);
1990 1990 }
1991 1991
1992 1992 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp);
1993 1993
1994 1994 spa_close(spa, FTAG);
1995 1995
1996 1996 nvlist_free(config);
1997 1997 nvlist_free(props);
1998 1998
1999 1999 return (error);
2000 2000 }
2001 2001
2002 2002 static int
2003 2003 zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
2004 2004 {
2005 2005 spa_t *spa;
2006 2006 char *path = zc->zc_value;
2007 2007 uint64_t guid = zc->zc_guid;
2008 2008 int error;
2009 2009
2010 2010 error = spa_open(zc->zc_name, &spa, FTAG);
2011 2011 if (error != 0)
2012 2012 return (error);
2013 2013
2014 2014 error = spa_vdev_setpath(spa, guid, path);
2015 2015 spa_close(spa, FTAG);
2016 2016 return (error);
2017 2017 }
2018 2018
2019 2019 static int
2020 2020 zfs_ioc_vdev_setfru(zfs_cmd_t *zc)
2021 2021 {
2022 2022 spa_t *spa;
2023 2023 char *fru = zc->zc_value;
2024 2024 uint64_t guid = zc->zc_guid;
2025 2025 int error;
2026 2026
2027 2027 error = spa_open(zc->zc_name, &spa, FTAG);
2028 2028 if (error != 0)
2029 2029 return (error);
2030 2030
2031 2031 error = spa_vdev_setfru(spa, guid, fru);
2032 2032 spa_close(spa, FTAG);
2033 2033 return (error);
2034 2034 }
2035 2035
2036 2036 static int
2037 2037 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os)
2038 2038 {
2039 2039 int error = 0;
2040 2040 nvlist_t *nv;
2041 2041
2042 2042 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
2043 2043
2044 2044 if (zc->zc_nvlist_dst != 0 &&
2045 2045 (error = dsl_prop_get_all(os, &nv)) == 0) {
2046 2046 dmu_objset_stats(os, nv);
2047 2047 /*
2048 2048 * NB: zvol_get_stats() will read the objset contents,
2049 2049 * which we aren't supposed to do with a
2050 2050 * DS_MODE_USER hold, because it could be
2051 2051 * inconsistent. So this is a bit of a workaround...
2052 2052 * XXX reading with out owning
2053 2053 */
2054 2054 if (!zc->zc_objset_stats.dds_inconsistent &&
2055 2055 dmu_objset_type(os) == DMU_OST_ZVOL) {
2056 2056 error = zvol_get_stats(os, nv);
2057 2057 if (error == EIO)
2058 2058 return (error);
2059 2059 VERIFY0(error);
2060 2060 }
2061 2061 error = put_nvlist(zc, nv);
2062 2062 nvlist_free(nv);
2063 2063 }
2064 2064
2065 2065 return (error);
2066 2066 }
2067 2067
2068 2068 /*
2069 2069 * inputs:
2070 2070 * zc_name name of filesystem
2071 2071 * zc_nvlist_dst_size size of buffer for property nvlist
2072 2072 *
2073 2073 * outputs:
2074 2074 * zc_objset_stats stats
2075 2075 * zc_nvlist_dst property nvlist
2076 2076 * zc_nvlist_dst_size size of property nvlist
2077 2077 */
2078 2078 static int
2079 2079 zfs_ioc_objset_stats(zfs_cmd_t *zc)
2080 2080 {
2081 2081 objset_t *os;
2082 2082 int error;
2083 2083
2084 2084 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
2085 2085 if (error == 0) {
2086 2086 error = zfs_ioc_objset_stats_impl(zc, os);
2087 2087 dmu_objset_rele(os, FTAG);
2088 2088 }
2089 2089
2090 2090 return (error);
2091 2091 }
2092 2092
2093 2093 /*
2094 2094 * inputs:
2095 2095 * zc_name name of filesystem
2096 2096 * zc_nvlist_dst_size size of buffer for property nvlist
2097 2097 *
2098 2098 * outputs:
2099 2099 * zc_nvlist_dst received property nvlist
2100 2100 * zc_nvlist_dst_size size of received property nvlist
2101 2101 *
2102 2102 * Gets received properties (distinct from local properties on or after
2103 2103 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from
2104 2104 * local property values.
2105 2105 */
2106 2106 static int
2107 2107 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc)
2108 2108 {
2109 2109 int error = 0;
2110 2110 nvlist_t *nv;
2111 2111
2112 2112 /*
2113 2113 * Without this check, we would return local property values if the
2114 2114 * caller has not already received properties on or after
2115 2115 * SPA_VERSION_RECVD_PROPS.
2116 2116 */
2117 2117 if (!dsl_prop_get_hasrecvd(zc->zc_name))
2118 2118 return (SET_ERROR(ENOTSUP));
2119 2119
2120 2120 if (zc->zc_nvlist_dst != 0 &&
2121 2121 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) {
2122 2122 error = put_nvlist(zc, nv);
2123 2123 nvlist_free(nv);
2124 2124 }
2125 2125
2126 2126 return (error);
2127 2127 }
2128 2128
2129 2129 static int
2130 2130 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop)
2131 2131 {
2132 2132 uint64_t value;
2133 2133 int error;
2134 2134
2135 2135 /*
2136 2136 * zfs_get_zplprop() will either find a value or give us
2137 2137 * the default value (if there is one).
2138 2138 */
2139 2139 if ((error = zfs_get_zplprop(os, prop, &value)) != 0)
2140 2140 return (error);
2141 2141 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0);
2142 2142 return (0);
2143 2143 }
2144 2144
2145 2145 /*
2146 2146 * inputs:
2147 2147 * zc_name name of filesystem
2148 2148 * zc_nvlist_dst_size size of buffer for zpl property nvlist
2149 2149 *
2150 2150 * outputs:
2151 2151 * zc_nvlist_dst zpl property nvlist
2152 2152 * zc_nvlist_dst_size size of zpl property nvlist
2153 2153 */
2154 2154 static int
2155 2155 zfs_ioc_objset_zplprops(zfs_cmd_t *zc)
2156 2156 {
2157 2157 objset_t *os;
2158 2158 int err;
2159 2159
2160 2160 /* XXX reading without owning */
2161 2161 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os))
2162 2162 return (err);
2163 2163
2164 2164 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
2165 2165
2166 2166 /*
2167 2167 * NB: nvl_add_zplprop() will read the objset contents,
2168 2168 * which we aren't supposed to do with a DS_MODE_USER
2169 2169 * hold, because it could be inconsistent.
2170 2170 */
2171 2171 if (zc->zc_nvlist_dst != NULL &&
2172 2172 !zc->zc_objset_stats.dds_inconsistent &&
2173 2173 dmu_objset_type(os) == DMU_OST_ZFS) {
2174 2174 nvlist_t *nv;
2175 2175
2176 2176 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2177 2177 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 &&
2178 2178 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 &&
2179 2179 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 &&
2180 2180 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0)
2181 2181 err = put_nvlist(zc, nv);
2182 2182 nvlist_free(nv);
2183 2183 } else {
2184 2184 err = SET_ERROR(ENOENT);
2185 2185 }
2186 2186 dmu_objset_rele(os, FTAG);
2187 2187 return (err);
2188 2188 }
2189 2189
2190 2190 static boolean_t
2191 2191 dataset_name_hidden(const char *name)
2192 2192 {
2193 2193 /*
2194 2194 * Skip over datasets that are not visible in this zone,
2195 2195 * internal datasets (which have a $ in their name), and
2196 2196 * temporary datasets (which have a % in their name).
2197 2197 */
2198 2198 if (strchr(name, '$') != NULL)
2199 2199 return (B_TRUE);
2200 2200 if (strchr(name, '%') != NULL)
2201 2201 return (B_TRUE);
2202 2202 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL))
2203 2203 return (B_TRUE);
2204 2204 return (B_FALSE);
2205 2205 }
2206 2206
2207 2207 /*
2208 2208 * inputs:
2209 2209 * zc_name name of filesystem
2210 2210 * zc_cookie zap cursor
2211 2211 * zc_nvlist_dst_size size of buffer for property nvlist
2212 2212 *
2213 2213 * outputs:
2214 2214 * zc_name name of next filesystem
2215 2215 * zc_cookie zap cursor
2216 2216 * zc_objset_stats stats
2217 2217 * zc_nvlist_dst property nvlist
2218 2218 * zc_nvlist_dst_size size of property nvlist
2219 2219 */
2220 2220 static int
2221 2221 zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
2222 2222 {
2223 2223 objset_t *os;
2224 2224 int error;
2225 2225 char *p;
2226 2226 size_t orig_len = strlen(zc->zc_name);
2227 2227
2228 2228 top:
2229 2229 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) {
2230 2230 if (error == ENOENT)
2231 2231 error = SET_ERROR(ESRCH);
2232 2232 return (error);
2233 2233 }
2234 2234
2235 2235 p = strrchr(zc->zc_name, '/');
2236 2236 if (p == NULL || p[1] != '\0')
2237 2237 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
2238 2238 p = zc->zc_name + strlen(zc->zc_name);
2239 2239
2240 2240 do {
2241 2241 error = dmu_dir_list_next(os,
2242 2242 sizeof (zc->zc_name) - (p - zc->zc_name), p,
2243 2243 NULL, &zc->zc_cookie);
2244 2244 if (error == ENOENT)
2245 2245 error = SET_ERROR(ESRCH);
2246 2246 } while (error == 0 && dataset_name_hidden(zc->zc_name));
2247 2247 dmu_objset_rele(os, FTAG);
2248 2248
2249 2249 /*
2250 2250 * If it's an internal dataset (ie. with a '$' in its name),
2251 2251 * don't try to get stats for it, otherwise we'll return ENOENT.
2252 2252 */
2253 2253 if (error == 0 && strchr(zc->zc_name, '$') == NULL) {
2254 2254 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
2255 2255 if (error == ENOENT) {
2256 2256 /* We lost a race with destroy, get the next one. */
2257 2257 zc->zc_name[orig_len] = '\0';
2258 2258 goto top;
2259 2259 }
2260 2260 }
2261 2261 return (error);
2262 2262 }
2263 2263
2264 2264 /*
2265 2265 * inputs:
2266 2266 * zc_name name of filesystem
2267 2267 * zc_cookie zap cursor
2268 2268 * zc_nvlist_dst_size size of buffer for property nvlist
2269 2269 *
2270 2270 * outputs:
2271 2271 * zc_name name of next snapshot
2272 2272 * zc_objset_stats stats
2273 2273 * zc_nvlist_dst property nvlist
2274 2274 * zc_nvlist_dst_size size of property nvlist
2275 2275 */
2276 2276 static int
2277 2277 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc)
2278 2278 {
2279 2279 objset_t *os;
2280 2280 int error;
2281 2281
2282 2282 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
2283 2283 if (error != 0) {
2284 2284 return (error == ENOENT ? ESRCH : error);
2285 2285 }
2286 2286
2287 2287 /*
2288 2288 * A dataset name of maximum length cannot have any snapshots,
2289 2289 * so exit immediately.
2290 2290 */
2291 2291 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) {
2292 2292 dmu_objset_rele(os, FTAG);
2293 2293 return (SET_ERROR(ESRCH));
2294 2294 }
2295 2295
2296 2296 error = dmu_snapshot_list_next(os,
2297 2297 sizeof (zc->zc_name) - strlen(zc->zc_name),
2298 2298 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie,
2299 2299 NULL);
2300 2300
2301 2301 if (error == 0) {
2302 2302 dsl_dataset_t *ds;
2303 2303 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool;
2304 2304
2305 2305 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds);
2306 2306 if (error == 0) {
2307 2307 objset_t *ossnap;
2308 2308
2309 2309 error = dmu_objset_from_ds(ds, &ossnap);
2310 2310 if (error == 0)
2311 2311 error = zfs_ioc_objset_stats_impl(zc, ossnap);
2312 2312 dsl_dataset_rele(ds, FTAG);
2313 2313 }
2314 2314 } else if (error == ENOENT) {
2315 2315 error = SET_ERROR(ESRCH);
2316 2316 }
2317 2317
2318 2318 dmu_objset_rele(os, FTAG);
2319 2319 /* if we failed, undo the @ that we tacked on to zc_name */
2320 2320 if (error != 0)
2321 2321 *strchr(zc->zc_name, '@') = '\0';
2322 2322 return (error);
2323 2323 }
2324 2324
2325 2325 static int
2326 2326 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair)
2327 2327 {
2328 2328 const char *propname = nvpair_name(pair);
2329 2329 uint64_t *valary;
2330 2330 unsigned int vallen;
2331 2331 const char *domain;
2332 2332 char *dash;
2333 2333 zfs_userquota_prop_t type;
2334 2334 uint64_t rid;
2335 2335 uint64_t quota;
2336 2336 zfsvfs_t *zfsvfs;
2337 2337 int err;
2338 2338
2339 2339 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2340 2340 nvlist_t *attrs;
2341 2341 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2342 2342 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2343 2343 &pair) != 0)
2344 2344 return (SET_ERROR(EINVAL));
2345 2345 }
2346 2346
2347 2347 /*
2348 2348 * A correctly constructed propname is encoded as
2349 2349 * userquota@<rid>-<domain>.
2350 2350 */
2351 2351 if ((dash = strchr(propname, '-')) == NULL ||
2352 2352 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 ||
2353 2353 vallen != 3)
2354 2354 return (SET_ERROR(EINVAL));
2355 2355
2356 2356 domain = dash + 1;
2357 2357 type = valary[0];
2358 2358 rid = valary[1];
2359 2359 quota = valary[2];
2360 2360
2361 2361 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE);
2362 2362 if (err == 0) {
2363 2363 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota);
2364 2364 zfsvfs_rele(zfsvfs, FTAG);
2365 2365 }
2366 2366
2367 2367 return (err);
2368 2368 }
2369 2369
2370 2370 /*
2371 2371 * If the named property is one that has a special function to set its value,
2372 2372 * return 0 on success and a positive error code on failure; otherwise if it is
2373 2373 * not one of the special properties handled by this function, return -1.
2374 2374 *
2375 2375 * XXX: It would be better for callers of the property interface if we handled
2376 2376 * these special cases in dsl_prop.c (in the dsl layer).
2377 2377 */
2378 2378 static int
2379 2379 zfs_prop_set_special(const char *dsname, zprop_source_t source,
2380 2380 nvpair_t *pair)
2381 2381 {
2382 2382 const char *propname = nvpair_name(pair);
2383 2383 zfs_prop_t prop = zfs_name_to_prop(propname);
2384 2384 uint64_t intval;
2385 2385 int err = -1;
2386 2386
2387 2387 if (prop == ZPROP_INVAL) {
2388 2388 if (zfs_prop_userquota(propname))
2389 2389 return (zfs_prop_set_userquota(dsname, pair));
2390 2390 return (-1);
2391 2391 }
2392 2392
2393 2393 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2394 2394 nvlist_t *attrs;
2395 2395 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2396 2396 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2397 2397 &pair) == 0);
2398 2398 }
2399 2399
2400 2400 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING)
2401 2401 return (-1);
2402 2402
2403 2403 VERIFY(0 == nvpair_value_uint64(pair, &intval));
2404 2404
2405 2405 switch (prop) {
2406 2406 case ZFS_PROP_QUOTA:
2407 2407 err = dsl_dir_set_quota(dsname, source, intval);
2408 2408 break;
2409 2409 case ZFS_PROP_REFQUOTA:
2410 2410 err = dsl_dataset_set_refquota(dsname, source, intval);
2411 2411 break;
2412 2412 case ZFS_PROP_FILESYSTEM_LIMIT:
2413 2413 case ZFS_PROP_SNAPSHOT_LIMIT:
2414 2414 if (intval == UINT64_MAX) {
2415 2415 /* clearing the limit, just do it */
2416 2416 err = 0;
2417 2417 } else {
2418 2418 err = dsl_dir_activate_fs_ss_limit(dsname);
2419 2419 }
2420 2420 /*
2421 2421 * Set err to -1 to force the zfs_set_prop_nvlist code down the
2422 2422 * default path to set the value in the nvlist.
2423 2423 */
2424 2424 if (err == 0)
2425 2425 err = -1;
2426 2426 break;
2427 2427 case ZFS_PROP_RESERVATION:
2428 2428 err = dsl_dir_set_reservation(dsname, source, intval);
2429 2429 break;
2430 2430 case ZFS_PROP_REFRESERVATION:
2431 2431 err = dsl_dataset_set_refreservation(dsname, source, intval);
2432 2432 break;
2433 2433 case ZFS_PROP_VOLSIZE:
2434 2434 err = zvol_set_volsize(dsname, intval);
2435 2435 break;
2436 2436 case ZFS_PROP_VERSION:
2437 2437 {
2438 2438 zfsvfs_t *zfsvfs;
2439 2439
2440 2440 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0)
2441 2441 break;
2442 2442
2443 2443 err = zfs_set_version(zfsvfs, intval);
2444 2444 zfsvfs_rele(zfsvfs, FTAG);
2445 2445
2446 2446 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) {
2447 2447 zfs_cmd_t *zc;
2448 2448
2449 2449 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
2450 2450 (void) strcpy(zc->zc_name, dsname);
2451 2451 (void) zfs_ioc_userspace_upgrade(zc);
2452 2452 kmem_free(zc, sizeof (zfs_cmd_t));
2453 2453 }
2454 2454 break;
2455 2455 }
2456 2456 default:
2457 2457 err = -1;
2458 2458 }
2459 2459
2460 2460 return (err);
2461 2461 }
2462 2462
2463 2463 /*
2464 2464 * This function is best effort. If it fails to set any of the given properties,
2465 2465 * it continues to set as many as it can and returns the last error
2466 2466 * encountered. If the caller provides a non-NULL errlist, it will be filled in
2467 2467 * with the list of names of all the properties that failed along with the
2468 2468 * corresponding error numbers.
2469 2469 *
2470 2470 * If every property is set successfully, zero is returned and errlist is not
2471 2471 * modified.
2472 2472 */
2473 2473 int
2474 2474 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl,
2475 2475 nvlist_t *errlist)
2476 2476 {
2477 2477 nvpair_t *pair;
2478 2478 nvpair_t *propval;
2479 2479 int rv = 0;
2480 2480 uint64_t intval;
2481 2481 char *strval;
2482 2482 nvlist_t *genericnvl = fnvlist_alloc();
2483 2483 nvlist_t *retrynvl = fnvlist_alloc();
2484 2484
2485 2485 retry:
2486 2486 pair = NULL;
2487 2487 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2488 2488 const char *propname = nvpair_name(pair);
2489 2489 zfs_prop_t prop = zfs_name_to_prop(propname);
2490 2490 int err = 0;
2491 2491
2492 2492 /* decode the property value */
2493 2493 propval = pair;
2494 2494 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2495 2495 nvlist_t *attrs;
2496 2496 attrs = fnvpair_value_nvlist(pair);
2497 2497 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2498 2498 &propval) != 0)
2499 2499 err = SET_ERROR(EINVAL);
2500 2500 }
2501 2501
2502 2502 /* Validate value type */
2503 2503 if (err == 0 && prop == ZPROP_INVAL) {
2504 2504 if (zfs_prop_user(propname)) {
2505 2505 if (nvpair_type(propval) != DATA_TYPE_STRING)
2506 2506 err = SET_ERROR(EINVAL);
2507 2507 } else if (zfs_prop_userquota(propname)) {
2508 2508 if (nvpair_type(propval) !=
2509 2509 DATA_TYPE_UINT64_ARRAY)
2510 2510 err = SET_ERROR(EINVAL);
2511 2511 } else {
2512 2512 err = SET_ERROR(EINVAL);
2513 2513 }
2514 2514 } else if (err == 0) {
2515 2515 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2516 2516 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING)
2517 2517 err = SET_ERROR(EINVAL);
2518 2518 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) {
2519 2519 const char *unused;
2520 2520
2521 2521 intval = fnvpair_value_uint64(propval);
2522 2522
2523 2523 switch (zfs_prop_get_type(prop)) {
2524 2524 case PROP_TYPE_NUMBER:
2525 2525 break;
2526 2526 case PROP_TYPE_STRING:
2527 2527 err = SET_ERROR(EINVAL);
2528 2528 break;
2529 2529 case PROP_TYPE_INDEX:
2530 2530 if (zfs_prop_index_to_string(prop,
2531 2531 intval, &unused) != 0)
2532 2532 err = SET_ERROR(EINVAL);
2533 2533 break;
2534 2534 default:
2535 2535 cmn_err(CE_PANIC,
2536 2536 "unknown property type");
2537 2537 }
2538 2538 } else {
2539 2539 err = SET_ERROR(EINVAL);
2540 2540 }
2541 2541 }
2542 2542
2543 2543 /* Validate permissions */
2544 2544 if (err == 0)
2545 2545 err = zfs_check_settable(dsname, pair, CRED());
2546 2546
2547 2547 if (err == 0) {
2548 2548 err = zfs_prop_set_special(dsname, source, pair);
2549 2549 if (err == -1) {
2550 2550 /*
2551 2551 * For better performance we build up a list of
2552 2552 * properties to set in a single transaction.
2553 2553 */
2554 2554 err = nvlist_add_nvpair(genericnvl, pair);
2555 2555 } else if (err != 0 && nvl != retrynvl) {
2556 2556 /*
2557 2557 * This may be a spurious error caused by
2558 2558 * receiving quota and reservation out of order.
2559 2559 * Try again in a second pass.
2560 2560 */
2561 2561 err = nvlist_add_nvpair(retrynvl, pair);
2562 2562 }
2563 2563 }
2564 2564
2565 2565 if (err != 0) {
2566 2566 if (errlist != NULL)
2567 2567 fnvlist_add_int32(errlist, propname, err);
2568 2568 rv = err;
2569 2569 }
2570 2570 }
2571 2571
2572 2572 if (nvl != retrynvl && !nvlist_empty(retrynvl)) {
2573 2573 nvl = retrynvl;
2574 2574 goto retry;
2575 2575 }
2576 2576
2577 2577 if (!nvlist_empty(genericnvl) &&
2578 2578 dsl_props_set(dsname, source, genericnvl) != 0) {
2579 2579 /*
2580 2580 * If this fails, we still want to set as many properties as we
2581 2581 * can, so try setting them individually.
2582 2582 */
2583 2583 pair = NULL;
2584 2584 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) {
2585 2585 const char *propname = nvpair_name(pair);
2586 2586 int err = 0;
2587 2587
2588 2588 propval = pair;
2589 2589 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2590 2590 nvlist_t *attrs;
2591 2591 attrs = fnvpair_value_nvlist(pair);
2592 2592 propval = fnvlist_lookup_nvpair(attrs,
2593 2593 ZPROP_VALUE);
2594 2594 }
2595 2595
2596 2596 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2597 2597 strval = fnvpair_value_string(propval);
2598 2598 err = dsl_prop_set_string(dsname, propname,
2599 2599 source, strval);
2600 2600 } else {
2601 2601 intval = fnvpair_value_uint64(propval);
2602 2602 err = dsl_prop_set_int(dsname, propname, source,
2603 2603 intval);
2604 2604 }
2605 2605
2606 2606 if (err != 0) {
2607 2607 if (errlist != NULL) {
2608 2608 fnvlist_add_int32(errlist, propname,
2609 2609 err);
2610 2610 }
2611 2611 rv = err;
2612 2612 }
2613 2613 }
2614 2614 }
2615 2615 nvlist_free(genericnvl);
2616 2616 nvlist_free(retrynvl);
2617 2617
2618 2618 return (rv);
2619 2619 }
2620 2620
2621 2621 /*
2622 2622 * Check that all the properties are valid user properties.
2623 2623 */
2624 2624 static int
2625 2625 zfs_check_userprops(const char *fsname, nvlist_t *nvl)
2626 2626 {
2627 2627 nvpair_t *pair = NULL;
2628 2628 int error = 0;
2629 2629
2630 2630 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2631 2631 const char *propname = nvpair_name(pair);
2632 2632
2633 2633 if (!zfs_prop_user(propname) ||
2634 2634 nvpair_type(pair) != DATA_TYPE_STRING)
2635 2635 return (SET_ERROR(EINVAL));
2636 2636
2637 2637 if (error = zfs_secpolicy_write_perms(fsname,
2638 2638 ZFS_DELEG_PERM_USERPROP, CRED()))
2639 2639 return (error);
2640 2640
2641 2641 if (strlen(propname) >= ZAP_MAXNAMELEN)
2642 2642 return (SET_ERROR(ENAMETOOLONG));
2643 2643
2644 2644 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN)
2645 2645 return (E2BIG);
2646 2646 }
2647 2647 return (0);
2648 2648 }
2649 2649
2650 2650 static void
2651 2651 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops)
2652 2652 {
2653 2653 nvpair_t *pair;
2654 2654
2655 2655 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2656 2656
2657 2657 pair = NULL;
2658 2658 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) {
2659 2659 if (nvlist_exists(skipped, nvpair_name(pair)))
2660 2660 continue;
2661 2661
2662 2662 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0);
2663 2663 }
2664 2664 }
2665 2665
2666 2666 static int
2667 2667 clear_received_props(const char *dsname, nvlist_t *props,
2668 2668 nvlist_t *skipped)
2669 2669 {
2670 2670 int err = 0;
2671 2671 nvlist_t *cleared_props = NULL;
2672 2672 props_skip(props, skipped, &cleared_props);
2673 2673 if (!nvlist_empty(cleared_props)) {
2674 2674 /*
2675 2675 * Acts on local properties until the dataset has received
2676 2676 * properties at least once on or after SPA_VERSION_RECVD_PROPS.
2677 2677 */
2678 2678 zprop_source_t flags = (ZPROP_SRC_NONE |
2679 2679 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0));
2680 2680 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL);
2681 2681 }
2682 2682 nvlist_free(cleared_props);
2683 2683 return (err);
2684 2684 }
2685 2685
2686 2686 /*
2687 2687 * inputs:
2688 2688 * zc_name name of filesystem
2689 2689 * zc_value name of property to set
2690 2690 * zc_nvlist_src{_size} nvlist of properties to apply
2691 2691 * zc_cookie received properties flag
2692 2692 *
2693 2693 * outputs:
2694 2694 * zc_nvlist_dst{_size} error for each unapplied received property
2695 2695 */
2696 2696 static int
2697 2697 zfs_ioc_set_prop(zfs_cmd_t *zc)
2698 2698 {
2699 2699 nvlist_t *nvl;
2700 2700 boolean_t received = zc->zc_cookie;
2701 2701 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED :
2702 2702 ZPROP_SRC_LOCAL);
2703 2703 nvlist_t *errors;
2704 2704 int error;
2705 2705
2706 2706 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2707 2707 zc->zc_iflags, &nvl)) != 0)
2708 2708 return (error);
2709 2709
2710 2710 if (received) {
2711 2711 nvlist_t *origprops;
2712 2712
2713 2713 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) {
2714 2714 (void) clear_received_props(zc->zc_name,
2715 2715 origprops, nvl);
2716 2716 nvlist_free(origprops);
2717 2717 }
2718 2718
2719 2719 error = dsl_prop_set_hasrecvd(zc->zc_name);
2720 2720 }
2721 2721
2722 2722 errors = fnvlist_alloc();
2723 2723 if (error == 0)
2724 2724 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors);
2725 2725
2726 2726 if (zc->zc_nvlist_dst != NULL && errors != NULL) {
2727 2727 (void) put_nvlist(zc, errors);
2728 2728 }
2729 2729
2730 2730 nvlist_free(errors);
2731 2731 nvlist_free(nvl);
2732 2732 return (error);
2733 2733 }
2734 2734
2735 2735 /*
2736 2736 * inputs:
2737 2737 * zc_name name of filesystem
2738 2738 * zc_value name of property to inherit
2739 2739 * zc_cookie revert to received value if TRUE
2740 2740 *
2741 2741 * outputs: none
2742 2742 */
2743 2743 static int
2744 2744 zfs_ioc_inherit_prop(zfs_cmd_t *zc)
2745 2745 {
2746 2746 const char *propname = zc->zc_value;
2747 2747 zfs_prop_t prop = zfs_name_to_prop(propname);
2748 2748 boolean_t received = zc->zc_cookie;
2749 2749 zprop_source_t source = (received
2750 2750 ? ZPROP_SRC_NONE /* revert to received value, if any */
2751 2751 : ZPROP_SRC_INHERITED); /* explicitly inherit */
2752 2752
2753 2753 if (received) {
2754 2754 nvlist_t *dummy;
2755 2755 nvpair_t *pair;
2756 2756 zprop_type_t type;
2757 2757 int err;
2758 2758
2759 2759 /*
2760 2760 * zfs_prop_set_special() expects properties in the form of an
2761 2761 * nvpair with type info.
2762 2762 */
2763 2763 if (prop == ZPROP_INVAL) {
2764 2764 if (!zfs_prop_user(propname))
2765 2765 return (SET_ERROR(EINVAL));
2766 2766
2767 2767 type = PROP_TYPE_STRING;
2768 2768 } else if (prop == ZFS_PROP_VOLSIZE ||
2769 2769 prop == ZFS_PROP_VERSION) {
2770 2770 return (SET_ERROR(EINVAL));
2771 2771 } else {
2772 2772 type = zfs_prop_get_type(prop);
2773 2773 }
2774 2774
2775 2775 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2776 2776
2777 2777 switch (type) {
2778 2778 case PROP_TYPE_STRING:
2779 2779 VERIFY(0 == nvlist_add_string(dummy, propname, ""));
2780 2780 break;
2781 2781 case PROP_TYPE_NUMBER:
2782 2782 case PROP_TYPE_INDEX:
2783 2783 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0));
2784 2784 break;
2785 2785 default:
2786 2786 nvlist_free(dummy);
2787 2787 return (SET_ERROR(EINVAL));
2788 2788 }
2789 2789
2790 2790 pair = nvlist_next_nvpair(dummy, NULL);
2791 2791 err = zfs_prop_set_special(zc->zc_name, source, pair);
2792 2792 nvlist_free(dummy);
2793 2793 if (err != -1)
2794 2794 return (err); /* special property already handled */
2795 2795 } else {
2796 2796 /*
2797 2797 * Only check this in the non-received case. We want to allow
2798 2798 * 'inherit -S' to revert non-inheritable properties like quota
2799 2799 * and reservation to the received or default values even though
2800 2800 * they are not considered inheritable.
2801 2801 */
2802 2802 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop))
2803 2803 return (SET_ERROR(EINVAL));
2804 2804 }
2805 2805
2806 2806 /* property name has been validated by zfs_secpolicy_inherit_prop() */
2807 2807 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source));
2808 2808 }
2809 2809
2810 2810 static int
2811 2811 zfs_ioc_pool_set_props(zfs_cmd_t *zc)
2812 2812 {
2813 2813 nvlist_t *props;
2814 2814 spa_t *spa;
2815 2815 int error;
2816 2816 nvpair_t *pair;
2817 2817
2818 2818 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2819 2819 zc->zc_iflags, &props))
2820 2820 return (error);
2821 2821
2822 2822 /*
2823 2823 * If the only property is the configfile, then just do a spa_lookup()
2824 2824 * to handle the faulted case.
2825 2825 */
2826 2826 pair = nvlist_next_nvpair(props, NULL);
2827 2827 if (pair != NULL && strcmp(nvpair_name(pair),
2828 2828 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 &&
2829 2829 nvlist_next_nvpair(props, pair) == NULL) {
2830 2830 mutex_enter(&spa_namespace_lock);
2831 2831 if ((spa = spa_lookup(zc->zc_name)) != NULL) {
2832 2832 spa_configfile_set(spa, props, B_FALSE);
2833 2833 spa_config_sync(spa, B_FALSE, B_TRUE);
2834 2834 }
2835 2835 mutex_exit(&spa_namespace_lock);
2836 2836 if (spa != NULL) {
2837 2837 nvlist_free(props);
2838 2838 return (0);
2839 2839 }
2840 2840 }
2841 2841
2842 2842 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2843 2843 nvlist_free(props);
2844 2844 return (error);
2845 2845 }
2846 2846
2847 2847 error = spa_prop_set(spa, props);
2848 2848
2849 2849 nvlist_free(props);
2850 2850 spa_close(spa, FTAG);
2851 2851
2852 2852 return (error);
2853 2853 }
2854 2854
2855 2855 static int
2856 2856 zfs_ioc_pool_get_props(zfs_cmd_t *zc)
2857 2857 {
2858 2858 spa_t *spa;
2859 2859 int error;
2860 2860 nvlist_t *nvp = NULL;
2861 2861
2862 2862 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2863 2863 /*
2864 2864 * If the pool is faulted, there may be properties we can still
2865 2865 * get (such as altroot and cachefile), so attempt to get them
2866 2866 * anyway.
2867 2867 */
2868 2868 mutex_enter(&spa_namespace_lock);
2869 2869 if ((spa = spa_lookup(zc->zc_name)) != NULL)
2870 2870 error = spa_prop_get(spa, &nvp);
2871 2871 mutex_exit(&spa_namespace_lock);
2872 2872 } else {
2873 2873 error = spa_prop_get(spa, &nvp);
2874 2874 spa_close(spa, FTAG);
2875 2875 }
2876 2876
2877 2877 if (error == 0 && zc->zc_nvlist_dst != NULL)
2878 2878 error = put_nvlist(zc, nvp);
2879 2879 else
2880 2880 error = SET_ERROR(EFAULT);
2881 2881
2882 2882 nvlist_free(nvp);
2883 2883 return (error);
2884 2884 }
2885 2885
2886 2886 /*
2887 2887 * inputs:
2888 2888 * zc_name name of filesystem
2889 2889 * zc_nvlist_src{_size} nvlist of delegated permissions
2890 2890 * zc_perm_action allow/unallow flag
2891 2891 *
2892 2892 * outputs: none
2893 2893 */
2894 2894 static int
2895 2895 zfs_ioc_set_fsacl(zfs_cmd_t *zc)
2896 2896 {
2897 2897 int error;
2898 2898 nvlist_t *fsaclnv = NULL;
2899 2899
2900 2900 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2901 2901 zc->zc_iflags, &fsaclnv)) != 0)
2902 2902 return (error);
2903 2903
2904 2904 /*
2905 2905 * Verify nvlist is constructed correctly
2906 2906 */
2907 2907 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
2908 2908 nvlist_free(fsaclnv);
2909 2909 return (SET_ERROR(EINVAL));
2910 2910 }
2911 2911
2912 2912 /*
2913 2913 * If we don't have PRIV_SYS_MOUNT, then validate
2914 2914 * that user is allowed to hand out each permission in
2915 2915 * the nvlist(s)
2916 2916 */
2917 2917
2918 2918 error = secpolicy_zfs(CRED());
2919 2919 if (error != 0) {
2920 2920 if (zc->zc_perm_action == B_FALSE) {
2921 2921 error = dsl_deleg_can_allow(zc->zc_name,
2922 2922 fsaclnv, CRED());
2923 2923 } else {
2924 2924 error = dsl_deleg_can_unallow(zc->zc_name,
2925 2925 fsaclnv, CRED());
2926 2926 }
2927 2927 }
2928 2928
2929 2929 if (error == 0)
2930 2930 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action);
2931 2931
2932 2932 nvlist_free(fsaclnv);
2933 2933 return (error);
2934 2934 }
2935 2935
2936 2936 /*
2937 2937 * inputs:
2938 2938 * zc_name name of filesystem
2939 2939 *
2940 2940 * outputs:
2941 2941 * zc_nvlist_src{_size} nvlist of delegated permissions
2942 2942 */
2943 2943 static int
2944 2944 zfs_ioc_get_fsacl(zfs_cmd_t *zc)
2945 2945 {
2946 2946 nvlist_t *nvp;
2947 2947 int error;
2948 2948
2949 2949 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) {
2950 2950 error = put_nvlist(zc, nvp);
2951 2951 nvlist_free(nvp);
2952 2952 }
2953 2953
2954 2954 return (error);
2955 2955 }
2956 2956
2957 2957 /*
2958 2958 * Search the vfs list for a specified resource. Returns a pointer to it
2959 2959 * or NULL if no suitable entry is found. The caller of this routine
2960 2960 * is responsible for releasing the returned vfs pointer.
2961 2961 */
2962 2962 static vfs_t *
2963 2963 zfs_get_vfs(const char *resource)
2964 2964 {
2965 2965 struct vfs *vfsp;
2966 2966 struct vfs *vfs_found = NULL;
2967 2967
2968 2968 vfs_list_read_lock();
2969 2969 vfsp = rootvfs;
2970 2970 do {
2971 2971 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) {
2972 2972 VFS_HOLD(vfsp);
2973 2973 vfs_found = vfsp;
2974 2974 break;
2975 2975 }
2976 2976 vfsp = vfsp->vfs_next;
2977 2977 } while (vfsp != rootvfs);
2978 2978 vfs_list_unlock();
2979 2979 return (vfs_found);
2980 2980 }
2981 2981
2982 2982 /* ARGSUSED */
2983 2983 static void
2984 2984 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
2985 2985 {
2986 2986 zfs_creat_t *zct = arg;
2987 2987
2988 2988 zfs_create_fs(os, cr, zct->zct_zplprops, tx);
2989 2989 }
2990 2990
2991 2991 #define ZFS_PROP_UNDEFINED ((uint64_t)-1)
2992 2992
2993 2993 /*
2994 2994 * inputs:
2995 2995 * os parent objset pointer (NULL if root fs)
2996 2996 * fuids_ok fuids allowed in this version of the spa?
2997 2997 * sa_ok SAs allowed in this version of the spa?
2998 2998 * createprops list of properties requested by creator
2999 2999 *
3000 3000 * outputs:
3001 3001 * zplprops values for the zplprops we attach to the master node object
3002 3002 * is_ci true if requested file system will be purely case-insensitive
3003 3003 *
3004 3004 * Determine the settings for utf8only, normalization and
3005 3005 * casesensitivity. Specific values may have been requested by the
3006 3006 * creator and/or we can inherit values from the parent dataset. If
3007 3007 * the file system is of too early a vintage, a creator can not
3008 3008 * request settings for these properties, even if the requested
3009 3009 * setting is the default value. We don't actually want to create dsl
3010 3010 * properties for these, so remove them from the source nvlist after
3011 3011 * processing.
3012 3012 */
3013 3013 static int
3014 3014 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver,
3015 3015 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops,
3016 3016 nvlist_t *zplprops, boolean_t *is_ci)
3017 3017 {
3018 3018 uint64_t sense = ZFS_PROP_UNDEFINED;
3019 3019 uint64_t norm = ZFS_PROP_UNDEFINED;
3020 3020 uint64_t u8 = ZFS_PROP_UNDEFINED;
3021 3021
3022 3022 ASSERT(zplprops != NULL);
3023 3023
3024 3024 /*
3025 3025 * Pull out creator prop choices, if any.
3026 3026 */
3027 3027 if (createprops) {
3028 3028 (void) nvlist_lookup_uint64(createprops,
3029 3029 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver);
3030 3030 (void) nvlist_lookup_uint64(createprops,
3031 3031 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm);
3032 3032 (void) nvlist_remove_all(createprops,
3033 3033 zfs_prop_to_name(ZFS_PROP_NORMALIZE));
3034 3034 (void) nvlist_lookup_uint64(createprops,
3035 3035 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8);
3036 3036 (void) nvlist_remove_all(createprops,
3037 3037 zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
3038 3038 (void) nvlist_lookup_uint64(createprops,
3039 3039 zfs_prop_to_name(ZFS_PROP_CASE), &sense);
3040 3040 (void) nvlist_remove_all(createprops,
3041 3041 zfs_prop_to_name(ZFS_PROP_CASE));
3042 3042 }
3043 3043
3044 3044 /*
3045 3045 * If the zpl version requested is whacky or the file system
3046 3046 * or pool is version is too "young" to support normalization
3047 3047 * and the creator tried to set a value for one of the props,
3048 3048 * error out.
3049 3049 */
3050 3050 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) ||
3051 3051 (zplver >= ZPL_VERSION_FUID && !fuids_ok) ||
3052 3052 (zplver >= ZPL_VERSION_SA && !sa_ok) ||
3053 3053 (zplver < ZPL_VERSION_NORMALIZATION &&
3054 3054 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
3055 3055 sense != ZFS_PROP_UNDEFINED)))
3056 3056 return (SET_ERROR(ENOTSUP));
3057 3057
3058 3058 /*
3059 3059 * Put the version in the zplprops
3060 3060 */
3061 3061 VERIFY(nvlist_add_uint64(zplprops,
3062 3062 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
3063 3063
3064 3064 if (norm == ZFS_PROP_UNDEFINED)
3065 3065 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0);
3066 3066 VERIFY(nvlist_add_uint64(zplprops,
3067 3067 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
3068 3068
3069 3069 /*
3070 3070 * If we're normalizing, names must always be valid UTF-8 strings.
3071 3071 */
3072 3072 if (norm)
3073 3073 u8 = 1;
3074 3074 if (u8 == ZFS_PROP_UNDEFINED)
3075 3075 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0);
3076 3076 VERIFY(nvlist_add_uint64(zplprops,
3077 3077 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
3078 3078
3079 3079 if (sense == ZFS_PROP_UNDEFINED)
3080 3080 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0);
3081 3081 VERIFY(nvlist_add_uint64(zplprops,
3082 3082 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
3083 3083
3084 3084 if (is_ci)
3085 3085 *is_ci = (sense == ZFS_CASE_INSENSITIVE);
3086 3086
3087 3087 return (0);
3088 3088 }
3089 3089
3090 3090 static int
3091 3091 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
3092 3092 nvlist_t *zplprops, boolean_t *is_ci)
3093 3093 {
3094 3094 boolean_t fuids_ok, sa_ok;
3095 3095 uint64_t zplver = ZPL_VERSION;
3096 3096 objset_t *os = NULL;
3097 3097 char parentname[MAXNAMELEN];
3098 3098 char *cp;
3099 3099 spa_t *spa;
3100 3100 uint64_t spa_vers;
3101 3101 int error;
3102 3102
3103 3103 (void) strlcpy(parentname, dataset, sizeof (parentname));
3104 3104 cp = strrchr(parentname, '/');
3105 3105 ASSERT(cp != NULL);
3106 3106 cp[0] = '\0';
3107 3107
3108 3108 if ((error = spa_open(dataset, &spa, FTAG)) != 0)
3109 3109 return (error);
3110 3110
3111 3111 spa_vers = spa_version(spa);
3112 3112 spa_close(spa, FTAG);
3113 3113
3114 3114 zplver = zfs_zpl_version_map(spa_vers);
3115 3115 fuids_ok = (zplver >= ZPL_VERSION_FUID);
3116 3116 sa_ok = (zplver >= ZPL_VERSION_SA);
3117 3117
3118 3118 /*
3119 3119 * Open parent object set so we can inherit zplprop values.
3120 3120 */
3121 3121 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0)
3122 3122 return (error);
3123 3123
3124 3124 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops,
3125 3125 zplprops, is_ci);
3126 3126 dmu_objset_rele(os, FTAG);
3127 3127 return (error);
3128 3128 }
3129 3129
3130 3130 static int
3131 3131 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops,
3132 3132 nvlist_t *zplprops, boolean_t *is_ci)
3133 3133 {
3134 3134 boolean_t fuids_ok;
3135 3135 boolean_t sa_ok;
3136 3136 uint64_t zplver = ZPL_VERSION;
3137 3137 int error;
3138 3138
3139 3139 zplver = zfs_zpl_version_map(spa_vers);
3140 3140 fuids_ok = (zplver >= ZPL_VERSION_FUID);
3141 3141 sa_ok = (zplver >= ZPL_VERSION_SA);
3142 3142
3143 3143 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok,
3144 3144 createprops, zplprops, is_ci);
3145 3145 return (error);
3146 3146 }
3147 3147
3148 3148 /*
3149 3149 * innvl: {
3150 3150 * "type" -> dmu_objset_type_t (int32)
3151 3151 * (optional) "props" -> { prop -> value }
3152 3152 * }
3153 3153 *
3154 3154 * outnvl: propname -> error code (int32)
3155 3155 */
3156 3156 static int
3157 3157 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3158 3158 {
3159 3159 int error = 0;
3160 3160 zfs_creat_t zct = { 0 };
3161 3161 nvlist_t *nvprops = NULL;
3162 3162 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
3163 3163 int32_t type32;
3164 3164 dmu_objset_type_t type;
3165 3165 boolean_t is_insensitive = B_FALSE;
3166 3166
3167 3167 if (nvlist_lookup_int32(innvl, "type", &type32) != 0)
3168 3168 return (SET_ERROR(EINVAL));
3169 3169 type = type32;
3170 3170 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops);
3171 3171
3172 3172 switch (type) {
3173 3173 case DMU_OST_ZFS:
3174 3174 cbfunc = zfs_create_cb;
3175 3175 break;
3176 3176
3177 3177 case DMU_OST_ZVOL:
3178 3178 cbfunc = zvol_create_cb;
3179 3179 break;
3180 3180
3181 3181 default:
3182 3182 cbfunc = NULL;
3183 3183 break;
3184 3184 }
3185 3185 if (strchr(fsname, '@') ||
3186 3186 strchr(fsname, '%'))
3187 3187 return (SET_ERROR(EINVAL));
3188 3188
3189 3189 zct.zct_props = nvprops;
3190 3190
3191 3191 if (cbfunc == NULL)
3192 3192 return (SET_ERROR(EINVAL));
3193 3193
3194 3194 if (type == DMU_OST_ZVOL) {
3195 3195 uint64_t volsize, volblocksize;
3196 3196
3197 3197 if (nvprops == NULL)
3198 3198 return (SET_ERROR(EINVAL));
3199 3199 if (nvlist_lookup_uint64(nvprops,
3200 3200 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0)
3201 3201 return (SET_ERROR(EINVAL));
3202 3202
3203 3203 if ((error = nvlist_lookup_uint64(nvprops,
3204 3204 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
3205 3205 &volblocksize)) != 0 && error != ENOENT)
3206 3206 return (SET_ERROR(EINVAL));
3207 3207
3208 3208 if (error != 0)
3209 3209 volblocksize = zfs_prop_default_numeric(
3210 3210 ZFS_PROP_VOLBLOCKSIZE);
3211 3211
3212 3212 if ((error = zvol_check_volblocksize(
3213 3213 volblocksize)) != 0 ||
3214 3214 (error = zvol_check_volsize(volsize,
3215 3215 volblocksize)) != 0)
3216 3216 return (error);
3217 3217 } else if (type == DMU_OST_ZFS) {
3218 3218 int error;
3219 3219
3220 3220 /*
3221 3221 * We have to have normalization and
3222 3222 * case-folding flags correct when we do the
3223 3223 * file system creation, so go figure them out
3224 3224 * now.
3225 3225 */
3226 3226 VERIFY(nvlist_alloc(&zct.zct_zplprops,
3227 3227 NV_UNIQUE_NAME, KM_SLEEP) == 0);
3228 3228 error = zfs_fill_zplprops(fsname, nvprops,
3229 3229 zct.zct_zplprops, &is_insensitive);
3230 3230 if (error != 0) {
3231 3231 nvlist_free(zct.zct_zplprops);
3232 3232 return (error);
3233 3233 }
3234 3234 }
3235 3235
3236 3236 error = dmu_objset_create(fsname, type,
3237 3237 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
3238 3238 nvlist_free(zct.zct_zplprops);
3239 3239
3240 3240 /*
3241 3241 * It would be nice to do this atomically.
3242 3242 */
3243 3243 if (error == 0) {
3244 3244 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL,
3245 3245 nvprops, outnvl);
3246 3246 if (error != 0)
3247 3247 (void) dsl_destroy_head(fsname);
3248 3248 }
3249 3249 return (error);
3250 3250 }
3251 3251
3252 3252 /*
3253 3253 * innvl: {
3254 3254 * "origin" -> name of origin snapshot
3255 3255 * (optional) "props" -> { prop -> value }
3256 3256 * }
3257 3257 *
3258 3258 * outnvl: propname -> error code (int32)
3259 3259 */
3260 3260 static int
3261 3261 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3262 3262 {
3263 3263 int error = 0;
3264 3264 nvlist_t *nvprops = NULL;
3265 3265 char *origin_name;
3266 3266
3267 3267 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0)
3268 3268 return (SET_ERROR(EINVAL));
3269 3269 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops);
3270 3270
3271 3271 if (strchr(fsname, '@') ||
3272 3272 strchr(fsname, '%'))
3273 3273 return (SET_ERROR(EINVAL));
3274 3274
3275 3275 if (dataset_namecheck(origin_name, NULL, NULL) != 0)
3276 3276 return (SET_ERROR(EINVAL));
3277 3277 error = dmu_objset_clone(fsname, origin_name);
3278 3278 if (error != 0)
3279 3279 return (error);
3280 3280
3281 3281 /*
3282 3282 * It would be nice to do this atomically.
3283 3283 */
3284 3284 if (error == 0) {
3285 3285 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL,
3286 3286 nvprops, outnvl);
3287 3287 if (error != 0)
3288 3288 (void) dsl_destroy_head(fsname);
3289 3289 }
3290 3290 return (error);
3291 3291 }
3292 3292
3293 3293 /*
3294 3294 * innvl: {
3295 3295 * "snaps" -> { snapshot1, snapshot2 }
3296 3296 * (optional) "props" -> { prop -> value (string) }
3297 3297 * }
3298 3298 *
3299 3299 * outnvl: snapshot -> error code (int32)
3300 3300 */
3301 3301 static int
3302 3302 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3303 3303 {
3304 3304 nvlist_t *snaps;
3305 3305 nvlist_t *props = NULL;
3306 3306 int error, poollen;
3307 3307 nvpair_t *pair;
3308 3308
3309 3309 (void) nvlist_lookup_nvlist(innvl, "props", &props);
3310 3310 if ((error = zfs_check_userprops(poolname, props)) != 0)
3311 3311 return (error);
3312 3312
3313 3313 if (!nvlist_empty(props) &&
3314 3314 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS))
3315 3315 return (SET_ERROR(ENOTSUP));
3316 3316
3317 3317 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
3318 3318 return (SET_ERROR(EINVAL));
3319 3319 poollen = strlen(poolname);
3320 3320 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
3321 3321 pair = nvlist_next_nvpair(snaps, pair)) {
3322 3322 const char *name = nvpair_name(pair);
3323 3323 const char *cp = strchr(name, '@');
3324 3324
3325 3325 /*
3326 3326 * The snap name must contain an @, and the part after it must
3327 3327 * contain only valid characters.
3328 3328 */
3329 3329 if (cp == NULL ||
3330 3330 zfs_component_namecheck(cp + 1, NULL, NULL) != 0)
3331 3331 return (SET_ERROR(EINVAL));
3332 3332
3333 3333 /*
3334 3334 * The snap must be in the specified pool.
3335 3335 */
3336 3336 if (strncmp(name, poolname, poollen) != 0 ||
3337 3337 (name[poollen] != '/' && name[poollen] != '@'))
3338 3338 return (SET_ERROR(EXDEV));
3339 3339
3340 3340 /* This must be the only snap of this fs. */
3341 3341 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair);
3342 3342 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) {
3343 3343 if (strncmp(name, nvpair_name(pair2), cp - name + 1)
3344 3344 == 0) {
3345 3345 return (SET_ERROR(EXDEV));
3346 3346 }
3347 3347 }
3348 3348 }
3349 3349
3350 3350 error = dsl_dataset_snapshot(snaps, props, outnvl);
3351 3351 return (error);
3352 3352 }
3353 3353
3354 3354 /*
3355 3355 * innvl: "message" -> string
3356 3356 */
3357 3357 /* ARGSUSED */
3358 3358 static int
3359 3359 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl)
3360 3360 {
3361 3361 char *message;
3362 3362 spa_t *spa;
3363 3363 int error;
3364 3364 char *poolname;
3365 3365
3366 3366 /*
3367 3367 * The poolname in the ioctl is not set, we get it from the TSD,
3368 3368 * which was set at the end of the last successful ioctl that allows
3369 3369 * logging. The secpolicy func already checked that it is set.
3370 3370 * Only one log ioctl is allowed after each successful ioctl, so
3371 3371 * we clear the TSD here.
3372 3372 */
3373 3373 poolname = tsd_get(zfs_allow_log_key);
3374 3374 (void) tsd_set(zfs_allow_log_key, NULL);
3375 3375 error = spa_open(poolname, &spa, FTAG);
3376 3376 strfree(poolname);
3377 3377 if (error != 0)
3378 3378 return (error);
3379 3379
3380 3380 if (nvlist_lookup_string(innvl, "message", &message) != 0) {
3381 3381 spa_close(spa, FTAG);
3382 3382 return (SET_ERROR(EINVAL));
3383 3383 }
3384 3384
3385 3385 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
3386 3386 spa_close(spa, FTAG);
3387 3387 return (SET_ERROR(ENOTSUP));
3388 3388 }
3389 3389
3390 3390 error = spa_history_log(spa, message);
3391 3391 spa_close(spa, FTAG);
3392 3392 return (error);
3393 3393 }
3394 3394
3395 3395 /*
3396 3396 * The dp_config_rwlock must not be held when calling this, because the
3397 3397 * unmount may need to write out data.
3398 3398 *
3399 3399 * This function is best-effort. Callers must deal gracefully if it
3400 3400 * remains mounted (or is remounted after this call).
3401 3401 *
3402 3402 * Returns 0 if the argument is not a snapshot, or it is not currently a
3403 3403 * filesystem, or we were able to unmount it. Returns error code otherwise.
3404 3404 */
3405 3405 int
3406 3406 zfs_unmount_snap(const char *snapname)
3407 3407 {
3408 3408 vfs_t *vfsp;
3409 3409 zfsvfs_t *zfsvfs;
3410 3410 int err;
3411 3411
3412 3412 if (strchr(snapname, '@') == NULL)
3413 3413 return (0);
3414 3414
3415 3415 vfsp = zfs_get_vfs(snapname);
3416 3416 if (vfsp == NULL)
3417 3417 return (0);
3418 3418
3419 3419 zfsvfs = vfsp->vfs_data;
3420 3420 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os)));
3421 3421
3422 3422 err = vn_vfswlock(vfsp->vfs_vnodecovered);
3423 3423 VFS_RELE(vfsp);
3424 3424 if (err != 0)
3425 3425 return (SET_ERROR(err));
3426 3426
3427 3427 /*
3428 3428 * Always force the unmount for snapshots.
3429 3429 */
3430 3430 (void) dounmount(vfsp, MS_FORCE, kcred);
3431 3431 return (0);
3432 3432 }
3433 3433
3434 3434 /* ARGSUSED */
3435 3435 static int
3436 3436 zfs_unmount_snap_cb(const char *snapname, void *arg)
3437 3437 {
3438 3438 return (zfs_unmount_snap(snapname));
3439 3439 }
3440 3440
3441 3441 /*
3442 3442 * When a clone is destroyed, its origin may also need to be destroyed,
3443 3443 * in which case it must be unmounted. This routine will do that unmount
3444 3444 * if necessary.
3445 3445 */
3446 3446 void
3447 3447 zfs_destroy_unmount_origin(const char *fsname)
3448 3448 {
3449 3449 int error;
3450 3450 objset_t *os;
3451 3451 dsl_dataset_t *ds;
3452 3452
3453 3453 error = dmu_objset_hold(fsname, FTAG, &os);
3454 3454 if (error != 0)
3455 3455 return;
3456 3456 ds = dmu_objset_ds(os);
3457 3457 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) {
3458 3458 char originname[MAXNAMELEN];
3459 3459 dsl_dataset_name(ds->ds_prev, originname);
3460 3460 dmu_objset_rele(os, FTAG);
3461 3461 (void) zfs_unmount_snap(originname);
3462 3462 } else {
3463 3463 dmu_objset_rele(os, FTAG);
3464 3464 }
3465 3465 }
3466 3466
3467 3467 /*
3468 3468 * innvl: {
3469 3469 * "snaps" -> { snapshot1, snapshot2 }
3470 3470 * (optional boolean) "defer"
3471 3471 * }
3472 3472 *
3473 3473 * outnvl: snapshot -> error code (int32)
3474 3474 *
3475 3475 */
3476 3476 /* ARGSUSED */
3477 3477 static int
3478 3478 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3479 3479 {
3480 3480 nvlist_t *snaps;
3481 3481 nvpair_t *pair;
3482 3482 boolean_t defer;
3483 3483
3484 3484 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
3485 3485 return (SET_ERROR(EINVAL));
3486 3486 defer = nvlist_exists(innvl, "defer");
3487 3487
3488 3488 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
3489 3489 pair = nvlist_next_nvpair(snaps, pair)) {
3490 3490 (void) zfs_unmount_snap(nvpair_name(pair));
3491 3491 }
3492 3492
3493 3493 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl));
3494 3494 }
3495 3495
3496 3496 /*
3497 3497 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>.
3498 3498 * All bookmarks must be in the same pool.
3499 3499 *
3500 3500 * innvl: {
3501 3501 * bookmark1 -> snapshot1, bookmark2 -> snapshot2
3502 3502 * }
3503 3503 *
3504 3504 * outnvl: bookmark -> error code (int32)
3505 3505 *
3506 3506 */
3507 3507 /* ARGSUSED */
3508 3508 static int
3509 3509 zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3510 3510 {
3511 3511 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL);
3512 3512 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) {
3513 3513 char *snap_name;
3514 3514
3515 3515 /*
3516 3516 * Verify the snapshot argument.
3517 3517 */
3518 3518 if (nvpair_value_string(pair, &snap_name) != 0)
3519 3519 return (SET_ERROR(EINVAL));
3520 3520
3521 3521
3522 3522 /* Verify that the keys (bookmarks) are unique */
3523 3523 for (nvpair_t *pair2 = nvlist_next_nvpair(innvl, pair);
3524 3524 pair2 != NULL; pair2 = nvlist_next_nvpair(innvl, pair2)) {
3525 3525 if (strcmp(nvpair_name(pair), nvpair_name(pair2)) == 0)
3526 3526 return (SET_ERROR(EINVAL));
3527 3527 }
3528 3528 }
3529 3529
3530 3530 return (dsl_bookmark_create(innvl, outnvl));
3531 3531 }
3532 3532
3533 3533 /*
3534 3534 * innvl: {
3535 3535 * property 1, property 2, ...
3536 3536 * }
3537 3537 *
3538 3538 * outnvl: {
3539 3539 * bookmark name 1 -> { property 1, property 2, ... },
3540 3540 * bookmark name 2 -> { property 1, property 2, ... }
3541 3541 * }
3542 3542 *
3543 3543 */
3544 3544 static int
3545 3545 zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3546 3546 {
3547 3547 return (dsl_get_bookmarks(fsname, innvl, outnvl));
3548 3548 }
3549 3549
3550 3550 /*
3551 3551 * innvl: {
3552 3552 * bookmark name 1, bookmark name 2
3553 3553 * }
3554 3554 *
3555 3555 * outnvl: bookmark -> error code (int32)
3556 3556 *
3557 3557 */
3558 3558 static int
3559 3559 zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl,
3560 3560 nvlist_t *outnvl)
3561 3561 {
3562 3562 int error, poollen;
3563 3563
3564 3564 poollen = strlen(poolname);
3565 3565 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL);
3566 3566 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) {
3567 3567 const char *name = nvpair_name(pair);
3568 3568 const char *cp = strchr(name, '#');
3569 3569
3570 3570 /*
3571 3571 * The bookmark name must contain an #, and the part after it
3572 3572 * must contain only valid characters.
3573 3573 */
3574 3574 if (cp == NULL ||
3575 3575 zfs_component_namecheck(cp + 1, NULL, NULL) != 0)
3576 3576 return (SET_ERROR(EINVAL));
3577 3577
3578 3578 /*
3579 3579 * The bookmark must be in the specified pool.
3580 3580 */
3581 3581 if (strncmp(name, poolname, poollen) != 0 ||
3582 3582 (name[poollen] != '/' && name[poollen] != '#'))
3583 3583 return (SET_ERROR(EXDEV));
3584 3584 }
3585 3585
3586 3586 error = dsl_bookmark_destroy(innvl, outnvl);
3587 3587 return (error);
3588 3588 }
3589 3589
3590 3590 /*
3591 3591 * inputs:
3592 3592 * zc_name name of dataset to destroy
3593 3593 * zc_objset_type type of objset
3594 3594 * zc_defer_destroy mark for deferred destroy
3595 3595 *
3596 3596 * outputs: none
3597 3597 */
3598 3598 static int
3599 3599 zfs_ioc_destroy(zfs_cmd_t *zc)
3600 3600 {
3601 3601 int err;
3602 3602
3603 3603 if (zc->zc_objset_type == DMU_OST_ZFS) {
3604 3604 err = zfs_unmount_snap(zc->zc_name);
3605 3605 if (err != 0)
3606 3606 return (err);
3607 3607 }
3608 3608
3609 3609 if (strchr(zc->zc_name, '@'))
3610 3610 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy);
3611 3611 else
3612 3612 err = dsl_destroy_head(zc->zc_name);
3613 3613 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0)
3614 3614 (void) zvol_remove_minor(zc->zc_name);
3615 3615 return (err);
3616 3616 }
3617 3617
3618 3618 /*
3619 3619 * fsname is name of dataset to rollback (to most recent snapshot)
3620 3620 *
3621 3621 * innvl is not used.
3622 3622 *
3623 3623 * outnvl: "target" -> name of most recent snapshot
3624 3624 * }
3625 3625 */
3626 3626 /* ARGSUSED */
3627 3627 static int
3628 3628 zfs_ioc_rollback(const char *fsname, nvlist_t *args, nvlist_t *outnvl)
3629 3629 {
3630 3630 zfsvfs_t *zfsvfs;
3631 3631 int error;
3632 3632
3633 3633 if (getzfsvfs(fsname, &zfsvfs) == 0) {
3634 3634 error = zfs_suspend_fs(zfsvfs);
3635 3635 if (error == 0) {
3636 3636 int resume_err;
3637 3637
3638 3638 error = dsl_dataset_rollback(fsname, zfsvfs, outnvl);
3639 3639 resume_err = zfs_resume_fs(zfsvfs, fsname);
3640 3640 error = error ? error : resume_err;
3641 3641 }
3642 3642 VFS_RELE(zfsvfs->z_vfs);
3643 3643 } else {
3644 3644 error = dsl_dataset_rollback(fsname, NULL, outnvl);
3645 3645 }
3646 3646 return (error);
3647 3647 }
3648 3648
3649 3649 static int
3650 3650 recursive_unmount(const char *fsname, void *arg)
3651 3651 {
3652 3652 const char *snapname = arg;
3653 3653 char fullname[MAXNAMELEN];
3654 3654
3655 3655 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname);
3656 3656 return (zfs_unmount_snap(fullname));
3657 3657 }
3658 3658
3659 3659 /*
3660 3660 * inputs:
3661 3661 * zc_name old name of dataset
3662 3662 * zc_value new name of dataset
3663 3663 * zc_cookie recursive flag (only valid for snapshots)
3664 3664 *
3665 3665 * outputs: none
3666 3666 */
3667 3667 static int
3668 3668 zfs_ioc_rename(zfs_cmd_t *zc)
3669 3669 {
3670 3670 boolean_t recursive = zc->zc_cookie & 1;
3671 3671 char *at;
3672 3672
3673 3673 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
3674 3674 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3675 3675 strchr(zc->zc_value, '%'))
3676 3676 return (SET_ERROR(EINVAL));
3677 3677
3678 3678 at = strchr(zc->zc_name, '@');
3679 3679 if (at != NULL) {
3680 3680 /* snaps must be in same fs */
3681 3681 int error;
3682 3682
3683 3683 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1))
3684 3684 return (SET_ERROR(EXDEV));
3685 3685 *at = '\0';
3686 3686 if (zc->zc_objset_type == DMU_OST_ZFS) {
3687 3687 error = dmu_objset_find(zc->zc_name,
3688 3688 recursive_unmount, at + 1,
3689 3689 recursive ? DS_FIND_CHILDREN : 0);
3690 3690 if (error != 0) {
3691 3691 *at = '@';
3692 3692 return (error);
3693 3693 }
3694 3694 }
3695 3695 error = dsl_dataset_rename_snapshot(zc->zc_name,
3696 3696 at + 1, strchr(zc->zc_value, '@') + 1, recursive);
3697 3697 *at = '@';
3698 3698
3699 3699 return (error);
3700 3700 } else {
3701 3701 if (zc->zc_objset_type == DMU_OST_ZVOL)
3702 3702 (void) zvol_remove_minor(zc->zc_name);
3703 3703 return (dsl_dir_rename(zc->zc_name, zc->zc_value));
3704 3704 }
3705 3705 }
3706 3706
3707 3707 static int
3708 3708 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr)
3709 3709 {
3710 3710 const char *propname = nvpair_name(pair);
3711 3711 boolean_t issnap = (strchr(dsname, '@') != NULL);
3712 3712 zfs_prop_t prop = zfs_name_to_prop(propname);
3713 3713 uint64_t intval;
3714 3714 int err;
3715 3715
3716 3716 if (prop == ZPROP_INVAL) {
3717 3717 if (zfs_prop_user(propname)) {
3718 3718 if (err = zfs_secpolicy_write_perms(dsname,
3719 3719 ZFS_DELEG_PERM_USERPROP, cr))
3720 3720 return (err);
3721 3721 return (0);
3722 3722 }
3723 3723
3724 3724 if (!issnap && zfs_prop_userquota(propname)) {
3725 3725 const char *perm = NULL;
3726 3726 const char *uq_prefix =
3727 3727 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA];
3728 3728 const char *gq_prefix =
3729 3729 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA];
3730 3730
3731 3731 if (strncmp(propname, uq_prefix,
3732 3732 strlen(uq_prefix)) == 0) {
3733 3733 perm = ZFS_DELEG_PERM_USERQUOTA;
3734 3734 } else if (strncmp(propname, gq_prefix,
3735 3735 strlen(gq_prefix)) == 0) {
3736 3736 perm = ZFS_DELEG_PERM_GROUPQUOTA;
3737 3737 } else {
3738 3738 /* USERUSED and GROUPUSED are read-only */
3739 3739 return (SET_ERROR(EINVAL));
3740 3740 }
3741 3741
3742 3742 if (err = zfs_secpolicy_write_perms(dsname, perm, cr))
3743 3743 return (err);
3744 3744 return (0);
3745 3745 }
3746 3746
3747 3747 return (SET_ERROR(EINVAL));
3748 3748 }
3749 3749
3750 3750 if (issnap)
3751 3751 return (SET_ERROR(EINVAL));
3752 3752
3753 3753 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
3754 3754 /*
3755 3755 * dsl_prop_get_all_impl() returns properties in this
3756 3756 * format.
3757 3757 */
3758 3758 nvlist_t *attrs;
3759 3759 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
3760 3760 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3761 3761 &pair) == 0);
3762 3762 }
3763 3763
3764 3764 /*
3765 3765 * Check that this value is valid for this pool version
3766 3766 */
3767 3767 switch (prop) {
3768 3768 case ZFS_PROP_COMPRESSION:
3769 3769 /*
3770 3770 * If the user specified gzip compression, make sure
3771 3771 * the SPA supports it. We ignore any errors here since
3772 3772 * we'll catch them later.
3773 3773 */
3774 3774 if (nvpair_value_uint64(pair, &intval) == 0) {
3775 3775 if (intval >= ZIO_COMPRESS_GZIP_1 &&
3776 3776 intval <= ZIO_COMPRESS_GZIP_9 &&
3777 3777 zfs_earlier_version(dsname,
3778 3778 SPA_VERSION_GZIP_COMPRESSION)) {
3779 3779 return (SET_ERROR(ENOTSUP));
3780 3780 }
3781 3781
3782 3782 if (intval == ZIO_COMPRESS_ZLE &&
3783 3783 zfs_earlier_version(dsname,
3784 3784 SPA_VERSION_ZLE_COMPRESSION))
3785 3785 return (SET_ERROR(ENOTSUP));
3786 3786
3787 3787 if (intval == ZIO_COMPRESS_LZ4) {
3788 3788 spa_t *spa;
3789 3789
3790 3790 if ((err = spa_open(dsname, &spa, FTAG)) != 0)
3791 3791 return (err);
3792 3792
3793 3793 if (!spa_feature_is_enabled(spa,
3794 3794 SPA_FEATURE_LZ4_COMPRESS)) {
3795 3795 spa_close(spa, FTAG);
3796 3796 return (SET_ERROR(ENOTSUP));
3797 3797 }
3798 3798 spa_close(spa, FTAG);
3799 3799 }
3800 3800
3801 3801 /*
3802 3802 * If this is a bootable dataset then
3803 3803 * verify that the compression algorithm
3804 3804 * is supported for booting. We must return
3805 3805 * something other than ENOTSUP since it
3806 3806 * implies a downrev pool version.
3807 3807 */
3808 3808 if (zfs_is_bootfs(dsname) &&
3809 3809 !BOOTFS_COMPRESS_VALID(intval)) {
3810 3810 return (SET_ERROR(ERANGE));
3811 3811 }
3812 3812 }
3813 3813 break;
3814 3814
3815 3815 case ZFS_PROP_COPIES:
3816 3816 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS))
3817 3817 return (SET_ERROR(ENOTSUP));
3818 3818 break;
3819 3819
3820 3820 case ZFS_PROP_DEDUP:
3821 3821 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP))
3822 3822 return (SET_ERROR(ENOTSUP));
3823 3823 break;
3824 3824
3825 3825 case ZFS_PROP_RECORDSIZE:
3826 3826 /* Record sizes above 128k need the feature to be enabled */
3827 3827 if (nvpair_value_uint64(pair, &intval) == 0 &&
3828 3828 intval > SPA_OLD_MAXBLOCKSIZE) {
3829 3829 spa_t *spa;
3830 3830
3831 3831 /*
3832 3832 * If this is a bootable dataset then
3833 3833 * the we don't allow large (>128K) blocks,
3834 3834 * because GRUB doesn't support them.
3835 3835 */
3836 3836 if (zfs_is_bootfs(dsname) &&
3837 3837 intval > SPA_OLD_MAXBLOCKSIZE) {
3838 3838 return (SET_ERROR(EDOM));
3839 3839 }
3840 3840
3841 3841 /*
3842 3842 * We don't allow setting the property above 1MB,
3843 3843 * unless the tunable has been changed.
3844 3844 */
3845 3845 if (intval > zfs_max_recordsize ||
3846 3846 intval > SPA_MAXBLOCKSIZE)
3847 3847 return (SET_ERROR(EDOM));
3848 3848
3849 3849 if ((err = spa_open(dsname, &spa, FTAG)) != 0)
3850 3850 return (err);
3851 3851
3852 3852 if (!spa_feature_is_enabled(spa,
3853 3853 SPA_FEATURE_LARGE_BLOCKS)) {
3854 3854 spa_close(spa, FTAG);
3855 3855 return (SET_ERROR(ENOTSUP));
3856 3856 }
3857 3857 spa_close(spa, FTAG);
3858 3858 }
3859 3859 break;
3860 3860
3861 3861 case ZFS_PROP_SHARESMB:
3862 3862 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID))
3863 3863 return (SET_ERROR(ENOTSUP));
3864 3864 break;
3865 3865
3866 3866 case ZFS_PROP_ACLINHERIT:
3867 3867 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3868 3868 nvpair_value_uint64(pair, &intval) == 0) {
3869 3869 if (intval == ZFS_ACL_PASSTHROUGH_X &&
3870 3870 zfs_earlier_version(dsname,
3871 3871 SPA_VERSION_PASSTHROUGH_X))
3872 3872 return (SET_ERROR(ENOTSUP));
3873 3873 }
3874 3874 break;
3875 3875 }
3876 3876
3877 3877 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED()));
3878 3878 }
3879 3879
3880 3880 /*
3881 3881 * Checks for a race condition to make sure we don't increment a feature flag
3882 3882 * multiple times.
3883 3883 */
3884 3884 static int
3885 3885 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx)
3886 3886 {
3887 3887 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
3888 3888 spa_feature_t *featurep = arg;
3889 3889
3890 3890 if (!spa_feature_is_active(spa, *featurep))
3891 3891 return (0);
3892 3892 else
3893 3893 return (SET_ERROR(EBUSY));
3894 3894 }
3895 3895
3896 3896 /*
3897 3897 * The callback invoked on feature activation in the sync task caused by
3898 3898 * zfs_prop_activate_feature.
3899 3899 */
3900 3900 static void
3901 3901 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx)
3902 3902 {
3903 3903 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
3904 3904 spa_feature_t *featurep = arg;
3905 3905
3906 3906 spa_feature_incr(spa, *featurep, tx);
3907 3907 }
3908 3908
3909 3909 /*
3910 3910 * Activates a feature on a pool in response to a property setting. This
3911 3911 * creates a new sync task which modifies the pool to reflect the feature
3912 3912 * as being active.
3913 3913 */
3914 3914 static int
3915 3915 zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature)
3916 3916 {
3917 3917 int err;
3918 3918
3919 3919 /* EBUSY here indicates that the feature is already active */
3920 3920 err = dsl_sync_task(spa_name(spa),
3921 3921 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync,
3922 3922 &feature, 2, ZFS_SPACE_CHECK_RESERVED);
3923 3923
3924 3924 if (err != 0 && err != EBUSY)
3925 3925 return (err);
3926 3926 else
3927 3927 return (0);
3928 3928 }
3929 3929
3930 3930 /*
3931 3931 * Removes properties from the given props list that fail permission checks
3932 3932 * needed to clear them and to restore them in case of a receive error. For each
3933 3933 * property, make sure we have both set and inherit permissions.
3934 3934 *
3935 3935 * Returns the first error encountered if any permission checks fail. If the
3936 3936 * caller provides a non-NULL errlist, it also gives the complete list of names
3937 3937 * of all the properties that failed a permission check along with the
3938 3938 * corresponding error numbers. The caller is responsible for freeing the
3939 3939 * returned errlist.
3940 3940 *
3941 3941 * If every property checks out successfully, zero is returned and the list
3942 3942 * pointed at by errlist is NULL.
3943 3943 */
3944 3944 static int
3945 3945 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist)
3946 3946 {
3947 3947 zfs_cmd_t *zc;
3948 3948 nvpair_t *pair, *next_pair;
3949 3949 nvlist_t *errors;
3950 3950 int err, rv = 0;
3951 3951
3952 3952 if (props == NULL)
3953 3953 return (0);
3954 3954
3955 3955 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
3956 3956
3957 3957 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP);
3958 3958 (void) strcpy(zc->zc_name, dataset);
3959 3959 pair = nvlist_next_nvpair(props, NULL);
3960 3960 while (pair != NULL) {
3961 3961 next_pair = nvlist_next_nvpair(props, pair);
3962 3962
3963 3963 (void) strcpy(zc->zc_value, nvpair_name(pair));
3964 3964 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 ||
3965 3965 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) {
3966 3966 VERIFY(nvlist_remove_nvpair(props, pair) == 0);
3967 3967 VERIFY(nvlist_add_int32(errors,
3968 3968 zc->zc_value, err) == 0);
3969 3969 }
3970 3970 pair = next_pair;
3971 3971 }
3972 3972 kmem_free(zc, sizeof (zfs_cmd_t));
3973 3973
3974 3974 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
3975 3975 nvlist_free(errors);
3976 3976 errors = NULL;
3977 3977 } else {
3978 3978 VERIFY(nvpair_value_int32(pair, &rv) == 0);
3979 3979 }
3980 3980
3981 3981 if (errlist == NULL)
3982 3982 nvlist_free(errors);
3983 3983 else
3984 3984 *errlist = errors;
3985 3985
3986 3986 return (rv);
3987 3987 }
3988 3988
3989 3989 static boolean_t
3990 3990 propval_equals(nvpair_t *p1, nvpair_t *p2)
3991 3991 {
3992 3992 if (nvpair_type(p1) == DATA_TYPE_NVLIST) {
3993 3993 /* dsl_prop_get_all_impl() format */
3994 3994 nvlist_t *attrs;
3995 3995 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0);
3996 3996 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3997 3997 &p1) == 0);
3998 3998 }
3999 3999
4000 4000 if (nvpair_type(p2) == DATA_TYPE_NVLIST) {
4001 4001 nvlist_t *attrs;
4002 4002 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0);
4003 4003 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
4004 4004 &p2) == 0);
4005 4005 }
4006 4006
4007 4007 if (nvpair_type(p1) != nvpair_type(p2))
4008 4008 return (B_FALSE);
4009 4009
4010 4010 if (nvpair_type(p1) == DATA_TYPE_STRING) {
4011 4011 char *valstr1, *valstr2;
4012 4012
4013 4013 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0);
4014 4014 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0);
4015 4015 return (strcmp(valstr1, valstr2) == 0);
4016 4016 } else {
4017 4017 uint64_t intval1, intval2;
4018 4018
4019 4019 VERIFY(nvpair_value_uint64(p1, &intval1) == 0);
4020 4020 VERIFY(nvpair_value_uint64(p2, &intval2) == 0);
4021 4021 return (intval1 == intval2);
4022 4022 }
4023 4023 }
4024 4024
4025 4025 /*
4026 4026 * Remove properties from props if they are not going to change (as determined
4027 4027 * by comparison with origprops). Remove them from origprops as well, since we
4028 4028 * do not need to clear or restore properties that won't change.
4029 4029 */
4030 4030 static void
4031 4031 props_reduce(nvlist_t *props, nvlist_t *origprops)
4032 4032 {
4033 4033 nvpair_t *pair, *next_pair;
4034 4034
4035 4035 if (origprops == NULL)
4036 4036 return; /* all props need to be received */
4037 4037
4038 4038 pair = nvlist_next_nvpair(props, NULL);
4039 4039 while (pair != NULL) {
4040 4040 const char *propname = nvpair_name(pair);
4041 4041 nvpair_t *match;
4042 4042
4043 4043 next_pair = nvlist_next_nvpair(props, pair);
4044 4044
4045 4045 if ((nvlist_lookup_nvpair(origprops, propname,
4046 4046 &match) != 0) || !propval_equals(pair, match))
4047 4047 goto next; /* need to set received value */
4048 4048
4049 4049 /* don't clear the existing received value */
4050 4050 (void) nvlist_remove_nvpair(origprops, match);
4051 4051 /* don't bother receiving the property */
4052 4052 (void) nvlist_remove_nvpair(props, pair);
4053 4053 next:
4054 4054 pair = next_pair;
4055 4055 }
4056 4056 }
4057 4057
4058 4058 #ifdef DEBUG
4059 4059 static boolean_t zfs_ioc_recv_inject_err;
4060 4060 #endif
4061 4061
4062 4062 /*
4063 4063 * inputs:
4064 4064 * zc_name name of containing filesystem
4065 4065 * zc_nvlist_src{_size} nvlist of properties to apply
4066 4066 * zc_value name of snapshot to create
4067 4067 * zc_string name of clone origin (if DRR_FLAG_CLONE)
4068 4068 * zc_cookie file descriptor to recv from
4069 4069 * zc_begin_record the BEGIN record of the stream (not byteswapped)
4070 4070 * zc_guid force flag
4071 4071 * zc_cleanup_fd cleanup-on-exit file descriptor
4072 4072 * zc_action_handle handle for this guid/ds mapping (or zero on first call)
4073 4073 *
4074 4074 * outputs:
4075 4075 * zc_cookie number of bytes read
4076 4076 * zc_nvlist_dst{_size} error for each unapplied received property
4077 4077 * zc_obj zprop_errflags_t
4078 4078 * zc_action_handle handle for this guid/ds mapping
4079 4079 */
4080 4080 static int
4081 4081 zfs_ioc_recv(zfs_cmd_t *zc)
4082 4082 {
4083 4083 file_t *fp;
4084 4084 dmu_recv_cookie_t drc;
4085 4085 boolean_t force = (boolean_t)zc->zc_guid;
4086 4086 int fd;
4087 4087 int error = 0;
4088 4088 int props_error = 0;
4089 4089 nvlist_t *errors;
4090 4090 offset_t off;
4091 4091 nvlist_t *props = NULL; /* sent properties */
4092 4092 nvlist_t *origprops = NULL; /* existing properties */
4093 4093 char *origin = NULL;
4094 4094 char *tosnap;
4095 4095 char tofs[ZFS_MAXNAMELEN];
4096 4096 boolean_t first_recvd_props = B_FALSE;
4097 4097
4098 4098 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
4099 4099 strchr(zc->zc_value, '@') == NULL ||
4100 4100 strchr(zc->zc_value, '%'))
4101 4101 return (SET_ERROR(EINVAL));
4102 4102
4103 4103 (void) strcpy(tofs, zc->zc_value);
4104 4104 tosnap = strchr(tofs, '@');
4105 4105 *tosnap++ = '\0';
4106 4106
4107 4107 if (zc->zc_nvlist_src != NULL &&
4108 4108 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
4109 4109 zc->zc_iflags, &props)) != 0)
4110 4110 return (error);
4111 4111
4112 4112 fd = zc->zc_cookie;
4113 4113 fp = getf(fd);
4114 4114 if (fp == NULL) {
4115 4115 nvlist_free(props);
4116 4116 return (SET_ERROR(EBADF));
4117 4117 }
4118 4118
4119 4119 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
4120 4120
4121 4121 if (zc->zc_string[0])
4122 4122 origin = zc->zc_string;
4123 4123
4124 4124 error = dmu_recv_begin(tofs, tosnap,
4125 4125 &zc->zc_begin_record, force, origin, &drc);
4126 4126 if (error != 0)
4127 4127 goto out;
4128 4128
4129 4129 /*
4130 4130 * Set properties before we receive the stream so that they are applied
4131 4131 * to the new data. Note that we must call dmu_recv_stream() if
4132 4132 * dmu_recv_begin() succeeds.
4133 4133 */
4134 4134 if (props != NULL && !drc.drc_newfs) {
4135 4135 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >=
4136 4136 SPA_VERSION_RECVD_PROPS &&
4137 4137 !dsl_prop_get_hasrecvd(tofs))
4138 4138 first_recvd_props = B_TRUE;
4139 4139
4140 4140 /*
4141 4141 * If new received properties are supplied, they are to
4142 4142 * completely replace the existing received properties, so stash
4143 4143 * away the existing ones.
4144 4144 */
4145 4145 if (dsl_prop_get_received(tofs, &origprops) == 0) {
4146 4146 nvlist_t *errlist = NULL;
4147 4147 /*
4148 4148 * Don't bother writing a property if its value won't
4149 4149 * change (and avoid the unnecessary security checks).
4150 4150 *
4151 4151 * The first receive after SPA_VERSION_RECVD_PROPS is a
4152 4152 * special case where we blow away all local properties
4153 4153 * regardless.
4154 4154 */
4155 4155 if (!first_recvd_props)
4156 4156 props_reduce(props, origprops);
4157 4157 if (zfs_check_clearable(tofs, origprops, &errlist) != 0)
4158 4158 (void) nvlist_merge(errors, errlist, 0);
4159 4159 nvlist_free(errlist);
4160 4160
4161 4161 if (clear_received_props(tofs, origprops,
4162 4162 first_recvd_props ? NULL : props) != 0)
4163 4163 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
4164 4164 } else {
4165 4165 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
4166 4166 }
4167 4167 }
4168 4168
4169 4169 if (props != NULL) {
4170 4170 props_error = dsl_prop_set_hasrecvd(tofs);
4171 4171
4172 4172 if (props_error == 0) {
4173 4173 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
4174 4174 props, errors);
4175 4175 }
4176 4176 }
4177 4177
4178 4178 if (zc->zc_nvlist_dst_size != 0 &&
4179 4179 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 ||
4180 4180 put_nvlist(zc, errors) != 0)) {
4181 4181 /*
4182 4182 * Caller made zc->zc_nvlist_dst less than the minimum expected
4183 4183 * size or supplied an invalid address.
4184 4184 */
4185 4185 props_error = SET_ERROR(EINVAL);
4186 4186 }
4187 4187
4188 4188 off = fp->f_offset;
4189 4189 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd,
4190 4190 &zc->zc_action_handle);
4191 4191
4192 4192 if (error == 0) {
4193 4193 zfsvfs_t *zfsvfs = NULL;
4194 4194
4195 4195 if (getzfsvfs(tofs, &zfsvfs) == 0) {
4196 4196 /* online recv */
4197 4197 int end_err;
4198 4198
4199 4199 error = zfs_suspend_fs(zfsvfs);
4200 4200 /*
4201 4201 * If the suspend fails, then the recv_end will
4202 4202 * likely also fail, and clean up after itself.
4203 4203 */
4204 4204 end_err = dmu_recv_end(&drc, zfsvfs);
4205 4205 if (error == 0)
4206 4206 error = zfs_resume_fs(zfsvfs, tofs);
4207 4207 error = error ? error : end_err;
4208 4208 VFS_RELE(zfsvfs->z_vfs);
4209 4209 } else {
4210 4210 error = dmu_recv_end(&drc, NULL);
4211 4211 }
4212 4212 }
4213 4213
4214 4214 zc->zc_cookie = off - fp->f_offset;
4215 4215 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4216 4216 fp->f_offset = off;
4217 4217
4218 4218 #ifdef DEBUG
4219 4219 if (zfs_ioc_recv_inject_err) {
4220 4220 zfs_ioc_recv_inject_err = B_FALSE;
4221 4221 error = 1;
4222 4222 }
4223 4223 #endif
4224 4224 /*
4225 4225 * On error, restore the original props.
4226 4226 */
4227 4227 if (error != 0 && props != NULL && !drc.drc_newfs) {
4228 4228 if (clear_received_props(tofs, props, NULL) != 0) {
4229 4229 /*
4230 4230 * We failed to clear the received properties.
4231 4231 * Since we may have left a $recvd value on the
4232 4232 * system, we can't clear the $hasrecvd flag.
4233 4233 */
4234 4234 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4235 4235 } else if (first_recvd_props) {
4236 4236 dsl_prop_unset_hasrecvd(tofs);
4237 4237 }
4238 4238
4239 4239 if (origprops == NULL && !drc.drc_newfs) {
4240 4240 /* We failed to stash the original properties. */
4241 4241 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4242 4242 }
4243 4243
4244 4244 /*
4245 4245 * dsl_props_set() will not convert RECEIVED to LOCAL on or
4246 4246 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL
4247 4247 * explictly if we're restoring local properties cleared in the
4248 4248 * first new-style receive.
4249 4249 */
4250 4250 if (origprops != NULL &&
4251 4251 zfs_set_prop_nvlist(tofs, (first_recvd_props ?
4252 4252 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED),
4253 4253 origprops, NULL) != 0) {
4254 4254 /*
4255 4255 * We stashed the original properties but failed to
4256 4256 * restore them.
4257 4257 */
4258 4258 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4259 4259 }
4260 4260 }
4261 4261 out:
4262 4262 nvlist_free(props);
4263 4263 nvlist_free(origprops);
4264 4264 nvlist_free(errors);
4265 4265 releasef(fd);
4266 4266
4267 4267 if (error == 0)
4268 4268 error = props_error;
4269 4269
4270 4270 return (error);
4271 4271 }
4272 4272
4273 4273 /*
4274 4274 * inputs:
4275 4275 * zc_name name of snapshot to send
4276 4276 * zc_cookie file descriptor to send stream to
4277 4277 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj)
4278 4278 * zc_sendobj objsetid of snapshot to send
4279 4279 * zc_fromobj objsetid of incremental fromsnap (may be zero)
4280 4280 * zc_guid if set, estimate size of stream only. zc_cookie is ignored.
4281 4281 * output size in zc_objset_type.
4282 4282 * zc_flags lzc_send_flags
4283 4283 *
4284 4284 * outputs:
4285 4285 * zc_objset_type estimated size, if zc_guid is set
4286 4286 */
4287 4287 static int
4288 4288 zfs_ioc_send(zfs_cmd_t *zc)
4289 4289 {
4290 4290 int error;
4291 4291 offset_t off;
4292 4292 boolean_t estimate = (zc->zc_guid != 0);
4293 4293 boolean_t embedok = (zc->zc_flags & 0x1);
4294 4294 boolean_t large_block_ok = (zc->zc_flags & 0x2);
4295 4295
4296 4296 if (zc->zc_obj != 0) {
4297 4297 dsl_pool_t *dp;
4298 4298 dsl_dataset_t *tosnap;
4299 4299
4300 4300 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4301 4301 if (error != 0)
4302 4302 return (error);
4303 4303
4304 4304 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap);
4305 4305 if (error != 0) {
4306 4306 dsl_pool_rele(dp, FTAG);
4307 4307 return (error);
4308 4308 }
4309 4309
4310 4310 if (dsl_dir_is_clone(tosnap->ds_dir))
4311 4311 zc->zc_fromobj =
4312 4312 dsl_dir_phys(tosnap->ds_dir)->dd_origin_obj;
4313 4313 dsl_dataset_rele(tosnap, FTAG);
4314 4314 dsl_pool_rele(dp, FTAG);
4315 4315 }
4316 4316
4317 4317 if (estimate) {
4318 4318 dsl_pool_t *dp;
4319 4319 dsl_dataset_t *tosnap;
4320 4320 dsl_dataset_t *fromsnap = NULL;
4321 4321
4322 4322 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4323 4323 if (error != 0)
4324 4324 return (error);
4325 4325
4326 4326 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap);
4327 4327 if (error != 0) {
4328 4328 dsl_pool_rele(dp, FTAG);
4329 4329 return (error);
4330 4330 }
4331 4331
4332 4332 if (zc->zc_fromobj != 0) {
4333 4333 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj,
4334 4334 FTAG, &fromsnap);
4335 4335 if (error != 0) {
4336 4336 dsl_dataset_rele(tosnap, FTAG);
4337 4337 dsl_pool_rele(dp, FTAG);
4338 4338 return (error);
4339 4339 }
4340 4340 }
4341 4341
4342 4342 error = dmu_send_estimate(tosnap, fromsnap,
4343 4343 &zc->zc_objset_type);
4344 4344
4345 4345 if (fromsnap != NULL)
4346 4346 dsl_dataset_rele(fromsnap, FTAG);
4347 4347 dsl_dataset_rele(tosnap, FTAG);
4348 4348 dsl_pool_rele(dp, FTAG);
4349 4349 } else {
4350 4350 file_t *fp = getf(zc->zc_cookie);
4351 4351 if (fp == NULL)
4352 4352 return (SET_ERROR(EBADF));
4353 4353
4354 4354 off = fp->f_offset;
4355 4355 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj,
4356 4356 zc->zc_fromobj, embedok, large_block_ok,
4357 4357 zc->zc_cookie, fp->f_vnode, &off);
4358 4358
4359 4359 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4360 4360 fp->f_offset = off;
4361 4361 releasef(zc->zc_cookie);
4362 4362 }
4363 4363 return (error);
4364 4364 }
4365 4365
4366 4366 /*
4367 4367 * inputs:
4368 4368 * zc_name name of snapshot on which to report progress
4369 4369 * zc_cookie file descriptor of send stream
4370 4370 *
4371 4371 * outputs:
4372 4372 * zc_cookie number of bytes written in send stream thus far
4373 4373 */
4374 4374 static int
4375 4375 zfs_ioc_send_progress(zfs_cmd_t *zc)
4376 4376 {
4377 4377 dsl_pool_t *dp;
4378 4378 dsl_dataset_t *ds;
4379 4379 dmu_sendarg_t *dsp = NULL;
4380 4380 int error;
4381 4381
4382 4382 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4383 4383 if (error != 0)
4384 4384 return (error);
4385 4385
4386 4386 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds);
4387 4387 if (error != 0) {
4388 4388 dsl_pool_rele(dp, FTAG);
4389 4389 return (error);
4390 4390 }
4391 4391
4392 4392 mutex_enter(&ds->ds_sendstream_lock);
4393 4393
4394 4394 /*
4395 4395 * Iterate over all the send streams currently active on this dataset.
4396 4396 * If there's one which matches the specified file descriptor _and_ the
4397 4397 * stream was started by the current process, return the progress of
4398 4398 * that stream.
4399 4399 */
4400 4400 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL;
4401 4401 dsp = list_next(&ds->ds_sendstreams, dsp)) {
4402 4402 if (dsp->dsa_outfd == zc->zc_cookie &&
4403 4403 dsp->dsa_proc == curproc)
4404 4404 break;
4405 4405 }
4406 4406
4407 4407 if (dsp != NULL)
4408 4408 zc->zc_cookie = *(dsp->dsa_off);
4409 4409 else
4410 4410 error = SET_ERROR(ENOENT);
4411 4411
4412 4412 mutex_exit(&ds->ds_sendstream_lock);
4413 4413 dsl_dataset_rele(ds, FTAG);
4414 4414 dsl_pool_rele(dp, FTAG);
4415 4415 return (error);
4416 4416 }
4417 4417
4418 4418 static int
4419 4419 zfs_ioc_inject_fault(zfs_cmd_t *zc)
4420 4420 {
4421 4421 int id, error;
4422 4422
4423 4423 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id,
4424 4424 &zc->zc_inject_record);
4425 4425
4426 4426 if (error == 0)
4427 4427 zc->zc_guid = (uint64_t)id;
4428 4428
4429 4429 return (error);
4430 4430 }
4431 4431
4432 4432 static int
4433 4433 zfs_ioc_clear_fault(zfs_cmd_t *zc)
4434 4434 {
4435 4435 return (zio_clear_fault((int)zc->zc_guid));
4436 4436 }
4437 4437
4438 4438 static int
4439 4439 zfs_ioc_inject_list_next(zfs_cmd_t *zc)
4440 4440 {
4441 4441 int id = (int)zc->zc_guid;
4442 4442 int error;
4443 4443
4444 4444 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name),
4445 4445 &zc->zc_inject_record);
4446 4446
4447 4447 zc->zc_guid = id;
4448 4448
4449 4449 return (error);
4450 4450 }
4451 4451
4452 4452 static int
4453 4453 zfs_ioc_error_log(zfs_cmd_t *zc)
4454 4454 {
4455 4455 spa_t *spa;
4456 4456 int error;
4457 4457 size_t count = (size_t)zc->zc_nvlist_dst_size;
4458 4458
4459 4459 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
4460 4460 return (error);
4461 4461
4462 4462 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst,
4463 4463 &count);
4464 4464 if (error == 0)
4465 4465 zc->zc_nvlist_dst_size = count;
4466 4466 else
4467 4467 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa);
4468 4468
4469 4469 spa_close(spa, FTAG);
4470 4470
4471 4471 return (error);
4472 4472 }
4473 4473
4474 4474 static int
4475 4475 zfs_ioc_clear(zfs_cmd_t *zc)
4476 4476 {
4477 4477 spa_t *spa;
4478 4478 vdev_t *vd;
4479 4479 int error;
4480 4480
4481 4481 /*
4482 4482 * On zpool clear we also fix up missing slogs
4483 4483 */
4484 4484 mutex_enter(&spa_namespace_lock);
4485 4485 spa = spa_lookup(zc->zc_name);
4486 4486 if (spa == NULL) {
4487 4487 mutex_exit(&spa_namespace_lock);
4488 4488 return (SET_ERROR(EIO));
4489 4489 }
4490 4490 if (spa_get_log_state(spa) == SPA_LOG_MISSING) {
4491 4491 /* we need to let spa_open/spa_load clear the chains */
4492 4492 spa_set_log_state(spa, SPA_LOG_CLEAR);
4493 4493 }
4494 4494 spa->spa_last_open_failed = 0;
4495 4495 mutex_exit(&spa_namespace_lock);
4496 4496
4497 4497 if (zc->zc_cookie & ZPOOL_NO_REWIND) {
4498 4498 error = spa_open(zc->zc_name, &spa, FTAG);
4499 4499 } else {
4500 4500 nvlist_t *policy;
4501 4501 nvlist_t *config = NULL;
4502 4502
4503 4503 if (zc->zc_nvlist_src == NULL)
4504 4504 return (SET_ERROR(EINVAL));
4505 4505
4506 4506 if ((error = get_nvlist(zc->zc_nvlist_src,
4507 4507 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) {
4508 4508 error = spa_open_rewind(zc->zc_name, &spa, FTAG,
4509 4509 policy, &config);
4510 4510 if (config != NULL) {
4511 4511 int err;
4512 4512
4513 4513 if ((err = put_nvlist(zc, config)) != 0)
4514 4514 error = err;
4515 4515 nvlist_free(config);
4516 4516 }
4517 4517 nvlist_free(policy);
4518 4518 }
4519 4519 }
4520 4520
4521 4521 if (error != 0)
4522 4522 return (error);
4523 4523
4524 4524 spa_vdev_state_enter(spa, SCL_NONE);
4525 4525
4526 4526 if (zc->zc_guid == 0) {
4527 4527 vd = NULL;
4528 4528 } else {
4529 4529 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE);
4530 4530 if (vd == NULL) {
4531 4531 (void) spa_vdev_state_exit(spa, NULL, ENODEV);
4532 4532 spa_close(spa, FTAG);
4533 4533 return (SET_ERROR(ENODEV));
4534 4534 }
4535 4535 }
4536 4536
4537 4537 vdev_clear(spa, vd);
4538 4538
4539 4539 (void) spa_vdev_state_exit(spa, NULL, 0);
4540 4540
4541 4541 /*
4542 4542 * Resume any suspended I/Os.
4543 4543 */
4544 4544 if (zio_resume(spa) != 0)
4545 4545 error = SET_ERROR(EIO);
4546 4546
4547 4547 spa_close(spa, FTAG);
4548 4548
4549 4549 return (error);
4550 4550 }
4551 4551
4552 4552 static int
4553 4553 zfs_ioc_pool_reopen(zfs_cmd_t *zc)
4554 4554 {
4555 4555 spa_t *spa;
4556 4556 int error;
4557 4557
4558 4558 error = spa_open(zc->zc_name, &spa, FTAG);
4559 4559 if (error != 0)
4560 4560 return (error);
4561 4561
4562 4562 spa_vdev_state_enter(spa, SCL_NONE);
4563 4563
4564 4564 /*
4565 4565 * If a resilver is already in progress then set the
4566 4566 * spa_scrub_reopen flag to B_TRUE so that we don't restart
4567 4567 * the scan as a side effect of the reopen. Otherwise, let
4568 4568 * vdev_open() decided if a resilver is required.
4569 4569 */
4570 4570 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool);
4571 4571 vdev_reopen(spa->spa_root_vdev);
4572 4572 spa->spa_scrub_reopen = B_FALSE;
4573 4573
4574 4574 (void) spa_vdev_state_exit(spa, NULL, 0);
4575 4575 spa_close(spa, FTAG);
4576 4576 return (0);
4577 4577 }
4578 4578 /*
4579 4579 * inputs:
4580 4580 * zc_name name of filesystem
4581 4581 * zc_value name of origin snapshot
4582 4582 *
4583 4583 * outputs:
4584 4584 * zc_string name of conflicting snapshot, if there is one
4585 4585 */
4586 4586 static int
4587 4587 zfs_ioc_promote(zfs_cmd_t *zc)
4588 4588 {
4589 4589 char *cp;
4590 4590
4591 4591 /*
4592 4592 * We don't need to unmount *all* the origin fs's snapshots, but
4593 4593 * it's easier.
4594 4594 */
4595 4595 cp = strchr(zc->zc_value, '@');
4596 4596 if (cp)
4597 4597 *cp = '\0';
4598 4598 (void) dmu_objset_find(zc->zc_value,
4599 4599 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS);
4600 4600 return (dsl_dataset_promote(zc->zc_name, zc->zc_string));
4601 4601 }
4602 4602
4603 4603 /*
4604 4604 * Retrieve a single {user|group}{used|quota}@... property.
4605 4605 *
4606 4606 * inputs:
4607 4607 * zc_name name of filesystem
4608 4608 * zc_objset_type zfs_userquota_prop_t
4609 4609 * zc_value domain name (eg. "S-1-234-567-89")
4610 4610 * zc_guid RID/UID/GID
4611 4611 *
4612 4612 * outputs:
4613 4613 * zc_cookie property value
4614 4614 */
4615 4615 static int
4616 4616 zfs_ioc_userspace_one(zfs_cmd_t *zc)
4617 4617 {
4618 4618 zfsvfs_t *zfsvfs;
4619 4619 int error;
4620 4620
4621 4621 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
4622 4622 return (SET_ERROR(EINVAL));
4623 4623
4624 4624 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE);
4625 4625 if (error != 0)
4626 4626 return (error);
4627 4627
4628 4628 error = zfs_userspace_one(zfsvfs,
4629 4629 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie);
4630 4630 zfsvfs_rele(zfsvfs, FTAG);
4631 4631
4632 4632 return (error);
4633 4633 }
4634 4634
4635 4635 /*
4636 4636 * inputs:
4637 4637 * zc_name name of filesystem
4638 4638 * zc_cookie zap cursor
4639 4639 * zc_objset_type zfs_userquota_prop_t
4640 4640 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist)
4641 4641 *
4642 4642 * outputs:
4643 4643 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t)
4644 4644 * zc_cookie zap cursor
4645 4645 */
4646 4646 static int
4647 4647 zfs_ioc_userspace_many(zfs_cmd_t *zc)
4648 4648 {
4649 4649 zfsvfs_t *zfsvfs;
4650 4650 int bufsize = zc->zc_nvlist_dst_size;
4651 4651
4652 4652 if (bufsize <= 0)
4653 4653 return (SET_ERROR(ENOMEM));
4654 4654
4655 4655 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE);
4656 4656 if (error != 0)
4657 4657 return (error);
4658 4658
4659 4659 void *buf = kmem_alloc(bufsize, KM_SLEEP);
4660 4660
4661 4661 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie,
4662 4662 buf, &zc->zc_nvlist_dst_size);
4663 4663
4664 4664 if (error == 0) {
4665 4665 error = xcopyout(buf,
4666 4666 (void *)(uintptr_t)zc->zc_nvlist_dst,
4667 4667 zc->zc_nvlist_dst_size);
4668 4668 }
4669 4669 kmem_free(buf, bufsize);
4670 4670 zfsvfs_rele(zfsvfs, FTAG);
4671 4671
4672 4672 return (error);
4673 4673 }
4674 4674
4675 4675 /*
4676 4676 * inputs:
4677 4677 * zc_name name of filesystem
4678 4678 *
4679 4679 * outputs:
4680 4680 * none
4681 4681 */
4682 4682 static int
4683 4683 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc)
4684 4684 {
4685 4685 objset_t *os;
4686 4686 int error = 0;
4687 4687 zfsvfs_t *zfsvfs;
4688 4688
4689 4689 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) {
4690 4690 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) {
4691 4691 /*
4692 4692 * If userused is not enabled, it may be because the
4693 4693 * objset needs to be closed & reopened (to grow the
4694 4694 * objset_phys_t). Suspend/resume the fs will do that.
4695 4695 */
4696 4696 error = zfs_suspend_fs(zfsvfs);
4697 4697 if (error == 0) {
4698 4698 dmu_objset_refresh_ownership(zfsvfs->z_os,
4699 4699 zfsvfs);
4700 4700 error = zfs_resume_fs(zfsvfs, zc->zc_name);
4701 4701 }
4702 4702 }
4703 4703 if (error == 0)
4704 4704 error = dmu_objset_userspace_upgrade(zfsvfs->z_os);
4705 4705 VFS_RELE(zfsvfs->z_vfs);
4706 4706 } else {
4707 4707 /* XXX kind of reading contents without owning */
4708 4708 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4709 4709 if (error != 0)
4710 4710 return (error);
4711 4711
4712 4712 error = dmu_objset_userspace_upgrade(os);
4713 4713 dmu_objset_rele(os, FTAG);
4714 4714 }
4715 4715
4716 4716 return (error);
4717 4717 }
4718 4718
4719 4719 /*
4720 4720 * We don't want to have a hard dependency
4721 4721 * against some special symbols in sharefs
4722 4722 * nfs, and smbsrv. Determine them if needed when
4723 4723 * the first file system is shared.
4724 4724 * Neither sharefs, nfs or smbsrv are unloadable modules.
4725 4725 */
4726 4726 int (*znfsexport_fs)(void *arg);
4727 4727 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t);
4728 4728 int (*zsmbexport_fs)(void *arg, boolean_t add_share);
4729 4729
4730 4730 int zfs_nfsshare_inited;
4731 4731 int zfs_smbshare_inited;
4732 4732
4733 4733 ddi_modhandle_t nfs_mod;
4734 4734 ddi_modhandle_t sharefs_mod;
4735 4735 ddi_modhandle_t smbsrv_mod;
4736 4736 kmutex_t zfs_share_lock;
4737 4737
4738 4738 static int
4739 4739 zfs_init_sharefs()
4740 4740 {
4741 4741 int error;
4742 4742
4743 4743 ASSERT(MUTEX_HELD(&zfs_share_lock));
4744 4744 /* Both NFS and SMB shares also require sharetab support. */
4745 4745 if (sharefs_mod == NULL && ((sharefs_mod =
4746 4746 ddi_modopen("fs/sharefs",
4747 4747 KRTLD_MODE_FIRST, &error)) == NULL)) {
4748 4748 return (SET_ERROR(ENOSYS));
4749 4749 }
4750 4750 if (zshare_fs == NULL && ((zshare_fs =
4751 4751 (int (*)(enum sharefs_sys_op, share_t *, uint32_t))
4752 4752 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) {
4753 4753 return (SET_ERROR(ENOSYS));
4754 4754 }
4755 4755 return (0);
4756 4756 }
4757 4757
4758 4758 static int
4759 4759 zfs_ioc_share(zfs_cmd_t *zc)
4760 4760 {
4761 4761 int error;
4762 4762 int opcode;
4763 4763
4764 4764 switch (zc->zc_share.z_sharetype) {
4765 4765 case ZFS_SHARE_NFS:
4766 4766 case ZFS_UNSHARE_NFS:
4767 4767 if (zfs_nfsshare_inited == 0) {
4768 4768 mutex_enter(&zfs_share_lock);
4769 4769 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs",
4770 4770 KRTLD_MODE_FIRST, &error)) == NULL)) {
4771 4771 mutex_exit(&zfs_share_lock);
4772 4772 return (SET_ERROR(ENOSYS));
4773 4773 }
4774 4774 if (znfsexport_fs == NULL &&
4775 4775 ((znfsexport_fs = (int (*)(void *))
4776 4776 ddi_modsym(nfs_mod,
4777 4777 "nfs_export", &error)) == NULL)) {
4778 4778 mutex_exit(&zfs_share_lock);
4779 4779 return (SET_ERROR(ENOSYS));
4780 4780 }
4781 4781 error = zfs_init_sharefs();
4782 4782 if (error != 0) {
4783 4783 mutex_exit(&zfs_share_lock);
4784 4784 return (SET_ERROR(ENOSYS));
4785 4785 }
4786 4786 zfs_nfsshare_inited = 1;
4787 4787 mutex_exit(&zfs_share_lock);
4788 4788 }
4789 4789 break;
4790 4790 case ZFS_SHARE_SMB:
4791 4791 case ZFS_UNSHARE_SMB:
4792 4792 if (zfs_smbshare_inited == 0) {
4793 4793 mutex_enter(&zfs_share_lock);
4794 4794 if (smbsrv_mod == NULL && ((smbsrv_mod =
4795 4795 ddi_modopen("drv/smbsrv",
4796 4796 KRTLD_MODE_FIRST, &error)) == NULL)) {
4797 4797 mutex_exit(&zfs_share_lock);
4798 4798 return (SET_ERROR(ENOSYS));
4799 4799 }
4800 4800 if (zsmbexport_fs == NULL && ((zsmbexport_fs =
4801 4801 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod,
4802 4802 "smb_server_share", &error)) == NULL)) {
4803 4803 mutex_exit(&zfs_share_lock);
4804 4804 return (SET_ERROR(ENOSYS));
4805 4805 }
4806 4806 error = zfs_init_sharefs();
4807 4807 if (error != 0) {
4808 4808 mutex_exit(&zfs_share_lock);
4809 4809 return (SET_ERROR(ENOSYS));
4810 4810 }
4811 4811 zfs_smbshare_inited = 1;
4812 4812 mutex_exit(&zfs_share_lock);
4813 4813 }
4814 4814 break;
4815 4815 default:
4816 4816 return (SET_ERROR(EINVAL));
4817 4817 }
4818 4818
4819 4819 switch (zc->zc_share.z_sharetype) {
4820 4820 case ZFS_SHARE_NFS:
4821 4821 case ZFS_UNSHARE_NFS:
4822 4822 if (error =
4823 4823 znfsexport_fs((void *)
4824 4824 (uintptr_t)zc->zc_share.z_exportdata))
4825 4825 return (error);
4826 4826 break;
4827 4827 case ZFS_SHARE_SMB:
4828 4828 case ZFS_UNSHARE_SMB:
4829 4829 if (error = zsmbexport_fs((void *)
4830 4830 (uintptr_t)zc->zc_share.z_exportdata,
4831 4831 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ?
4832 4832 B_TRUE: B_FALSE)) {
4833 4833 return (error);
4834 4834 }
4835 4835 break;
4836 4836 }
4837 4837
4838 4838 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS ||
4839 4839 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ?
4840 4840 SHAREFS_ADD : SHAREFS_REMOVE;
4841 4841
4842 4842 /*
4843 4843 * Add or remove share from sharetab
4844 4844 */
4845 4845 error = zshare_fs(opcode,
4846 4846 (void *)(uintptr_t)zc->zc_share.z_sharedata,
4847 4847 zc->zc_share.z_sharemax);
4848 4848
4849 4849 return (error);
4850 4850
4851 4851 }
4852 4852
4853 4853 ace_t full_access[] = {
4854 4854 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0}
4855 4855 };
4856 4856
4857 4857 /*
4858 4858 * inputs:
4859 4859 * zc_name name of containing filesystem
4860 4860 * zc_obj object # beyond which we want next in-use object #
4861 4861 *
4862 4862 * outputs:
4863 4863 * zc_obj next in-use object #
4864 4864 */
4865 4865 static int
4866 4866 zfs_ioc_next_obj(zfs_cmd_t *zc)
4867 4867 {
4868 4868 objset_t *os = NULL;
4869 4869 int error;
4870 4870
4871 4871 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4872 4872 if (error != 0)
4873 4873 return (error);
4874 4874
4875 4875 error = dmu_object_next(os, &zc->zc_obj, B_FALSE,
4876 4876 dsl_dataset_phys(os->os_dsl_dataset)->ds_prev_snap_txg);
4877 4877
4878 4878 dmu_objset_rele(os, FTAG);
4879 4879 return (error);
4880 4880 }
4881 4881
4882 4882 /*
4883 4883 * inputs:
4884 4884 * zc_name name of filesystem
4885 4885 * zc_value prefix name for snapshot
4886 4886 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
4887 4887 *
4888 4888 * outputs:
4889 4889 * zc_value short name of new snapshot
4890 4890 */
4891 4891 static int
4892 4892 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc)
4893 4893 {
4894 4894 char *snap_name;
4895 4895 char *hold_name;
4896 4896 int error;
4897 4897 minor_t minor;
4898 4898
4899 4899 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor);
4900 4900 if (error != 0)
4901 4901 return (error);
4902 4902
4903 4903 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value,
4904 4904 (u_longlong_t)ddi_get_lbolt64());
4905 4905 hold_name = kmem_asprintf("%%%s", zc->zc_value);
4906 4906
4907 4907 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor,
4908 4908 hold_name);
4909 4909 if (error == 0)
4910 4910 (void) strcpy(zc->zc_value, snap_name);
4911 4911 strfree(snap_name);
4912 4912 strfree(hold_name);
4913 4913 zfs_onexit_fd_rele(zc->zc_cleanup_fd);
4914 4914 return (error);
4915 4915 }
4916 4916
4917 4917 /*
4918 4918 * inputs:
4919 4919 * zc_name name of "to" snapshot
4920 4920 * zc_value name of "from" snapshot
4921 4921 * zc_cookie file descriptor to write diff data on
4922 4922 *
4923 4923 * outputs:
4924 4924 * dmu_diff_record_t's to the file descriptor
4925 4925 */
4926 4926 static int
4927 4927 zfs_ioc_diff(zfs_cmd_t *zc)
4928 4928 {
4929 4929 file_t *fp;
4930 4930 offset_t off;
4931 4931 int error;
4932 4932
4933 4933 fp = getf(zc->zc_cookie);
4934 4934 if (fp == NULL)
4935 4935 return (SET_ERROR(EBADF));
4936 4936
4937 4937 off = fp->f_offset;
4938 4938
4939 4939 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off);
4940 4940
4941 4941 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4942 4942 fp->f_offset = off;
4943 4943 releasef(zc->zc_cookie);
4944 4944
4945 4945 return (error);
4946 4946 }
4947 4947
4948 4948 /*
4949 4949 * Remove all ACL files in shares dir
4950 4950 */
4951 4951 static int
4952 4952 zfs_smb_acl_purge(znode_t *dzp)
4953 4953 {
4954 4954 zap_cursor_t zc;
4955 4955 zap_attribute_t zap;
4956 4956 zfsvfs_t *zfsvfs = dzp->z_zfsvfs;
4957 4957 int error;
4958 4958
4959 4959 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id);
4960 4960 (error = zap_cursor_retrieve(&zc, &zap)) == 0;
4961 4961 zap_cursor_advance(&zc)) {
4962 4962 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred,
4963 4963 NULL, 0)) != 0)
4964 4964 break;
4965 4965 }
4966 4966 zap_cursor_fini(&zc);
4967 4967 return (error);
4968 4968 }
4969 4969
4970 4970 static int
4971 4971 zfs_ioc_smb_acl(zfs_cmd_t *zc)
4972 4972 {
4973 4973 vnode_t *vp;
4974 4974 znode_t *dzp;
4975 4975 vnode_t *resourcevp = NULL;
4976 4976 znode_t *sharedir;
4977 4977 zfsvfs_t *zfsvfs;
4978 4978 nvlist_t *nvlist;
4979 4979 char *src, *target;
4980 4980 vattr_t vattr;
4981 4981 vsecattr_t vsec;
4982 4982 int error = 0;
4983 4983
4984 4984 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
4985 4985 NO_FOLLOW, NULL, &vp)) != 0)
4986 4986 return (error);
4987 4987
4988 4988 /* Now make sure mntpnt and dataset are ZFS */
4989 4989
4990 4990 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
4991 4991 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
4992 4992 zc->zc_name) != 0)) {
4993 4993 VN_RELE(vp);
4994 4994 return (SET_ERROR(EINVAL));
4995 4995 }
4996 4996
4997 4997 dzp = VTOZ(vp);
4998 4998 zfsvfs = dzp->z_zfsvfs;
4999 4999 ZFS_ENTER(zfsvfs);
5000 5000
5001 5001 /*
5002 5002 * Create share dir if its missing.
5003 5003 */
5004 5004 mutex_enter(&zfsvfs->z_lock);
5005 5005 if (zfsvfs->z_shares_dir == 0) {
5006 5006 dmu_tx_t *tx;
5007 5007
5008 5008 tx = dmu_tx_create(zfsvfs->z_os);
5009 5009 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE,
5010 5010 ZFS_SHARES_DIR);
5011 5011 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
5012 5012 error = dmu_tx_assign(tx, TXG_WAIT);
5013 5013 if (error != 0) {
5014 5014 dmu_tx_abort(tx);
5015 5015 } else {
5016 5016 error = zfs_create_share_dir(zfsvfs, tx);
5017 5017 dmu_tx_commit(tx);
5018 5018 }
5019 5019 if (error != 0) {
5020 5020 mutex_exit(&zfsvfs->z_lock);
5021 5021 VN_RELE(vp);
5022 5022 ZFS_EXIT(zfsvfs);
5023 5023 return (error);
5024 5024 }
5025 5025 }
5026 5026 mutex_exit(&zfsvfs->z_lock);
5027 5027
5028 5028 ASSERT(zfsvfs->z_shares_dir);
5029 5029 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) {
5030 5030 VN_RELE(vp);
5031 5031 ZFS_EXIT(zfsvfs);
5032 5032 return (error);
5033 5033 }
5034 5034
5035 5035 switch (zc->zc_cookie) {
5036 5036 case ZFS_SMB_ACL_ADD:
5037 5037 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE;
5038 5038 vattr.va_type = VREG;
5039 5039 vattr.va_mode = S_IFREG|0777;
5040 5040 vattr.va_uid = 0;
5041 5041 vattr.va_gid = 0;
5042 5042
5043 5043 vsec.vsa_mask = VSA_ACE;
5044 5044 vsec.vsa_aclentp = &full_access;
5045 5045 vsec.vsa_aclentsz = sizeof (full_access);
5046 5046 vsec.vsa_aclcnt = 1;
5047 5047
5048 5048 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string,
5049 5049 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec);
5050 5050 if (resourcevp)
5051 5051 VN_RELE(resourcevp);
5052 5052 break;
|
↓ open down ↓ |
5052 lines elided |
↑ open up ↑ |
5053 5053
5054 5054 case ZFS_SMB_ACL_REMOVE:
5055 5055 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred,
5056 5056 NULL, 0);
5057 5057 break;
5058 5058
5059 5059 case ZFS_SMB_ACL_RENAME:
5060 5060 if ((error = get_nvlist(zc->zc_nvlist_src,
5061 5061 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) {
5062 5062 VN_RELE(vp);
5063 + VN_RELE(ZTOV(sharedir));
5063 5064 ZFS_EXIT(zfsvfs);
5064 5065 return (error);
5065 5066 }
5066 5067 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) ||
5067 5068 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET,
5068 5069 &target)) {
5069 5070 VN_RELE(vp);
5070 5071 VN_RELE(ZTOV(sharedir));
5071 5072 ZFS_EXIT(zfsvfs);
5072 5073 nvlist_free(nvlist);
5073 5074 return (error);
5074 5075 }
5075 5076 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target,
5076 5077 kcred, NULL, 0);
5077 5078 nvlist_free(nvlist);
5078 5079 break;
5079 5080
5080 5081 case ZFS_SMB_ACL_PURGE:
5081 5082 error = zfs_smb_acl_purge(sharedir);
5082 5083 break;
5083 5084
5084 5085 default:
5085 5086 error = SET_ERROR(EINVAL);
5086 5087 break;
5087 5088 }
5088 5089
5089 5090 VN_RELE(vp);
5090 5091 VN_RELE(ZTOV(sharedir));
5091 5092
5092 5093 ZFS_EXIT(zfsvfs);
5093 5094
5094 5095 return (error);
5095 5096 }
5096 5097
5097 5098 /*
5098 5099 * innvl: {
5099 5100 * "holds" -> { snapname -> holdname (string), ... }
5100 5101 * (optional) "cleanup_fd" -> fd (int32)
5101 5102 * }
5102 5103 *
5103 5104 * outnvl: {
5104 5105 * snapname -> error value (int32)
5105 5106 * ...
5106 5107 * }
5107 5108 */
5108 5109 /* ARGSUSED */
5109 5110 static int
5110 5111 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist)
5111 5112 {
5112 5113 nvpair_t *pair;
5113 5114 nvlist_t *holds;
5114 5115 int cleanup_fd = -1;
5115 5116 int error;
5116 5117 minor_t minor = 0;
5117 5118
5118 5119 error = nvlist_lookup_nvlist(args, "holds", &holds);
5119 5120 if (error != 0)
5120 5121 return (SET_ERROR(EINVAL));
5121 5122
5122 5123 /* make sure the user didn't pass us any invalid (empty) tags */
5123 5124 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
5124 5125 pair = nvlist_next_nvpair(holds, pair)) {
5125 5126 char *htag;
5126 5127
5127 5128 error = nvpair_value_string(pair, &htag);
5128 5129 if (error != 0)
5129 5130 return (SET_ERROR(error));
5130 5131
5131 5132 if (strlen(htag) == 0)
5132 5133 return (SET_ERROR(EINVAL));
5133 5134 }
5134 5135
5135 5136 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) {
5136 5137 error = zfs_onexit_fd_hold(cleanup_fd, &minor);
5137 5138 if (error != 0)
5138 5139 return (error);
5139 5140 }
5140 5141
5141 5142 error = dsl_dataset_user_hold(holds, minor, errlist);
5142 5143 if (minor != 0)
5143 5144 zfs_onexit_fd_rele(cleanup_fd);
5144 5145 return (error);
5145 5146 }
5146 5147
5147 5148 /*
5148 5149 * innvl is not used.
5149 5150 *
5150 5151 * outnvl: {
5151 5152 * holdname -> time added (uint64 seconds since epoch)
5152 5153 * ...
5153 5154 * }
5154 5155 */
5155 5156 /* ARGSUSED */
5156 5157 static int
5157 5158 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl)
5158 5159 {
5159 5160 return (dsl_dataset_get_holds(snapname, outnvl));
5160 5161 }
5161 5162
5162 5163 /*
5163 5164 * innvl: {
5164 5165 * snapname -> { holdname, ... }
5165 5166 * ...
5166 5167 * }
5167 5168 *
5168 5169 * outnvl: {
5169 5170 * snapname -> error value (int32)
5170 5171 * ...
5171 5172 * }
5172 5173 */
5173 5174 /* ARGSUSED */
5174 5175 static int
5175 5176 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist)
5176 5177 {
5177 5178 return (dsl_dataset_user_release(holds, errlist));
5178 5179 }
5179 5180
5180 5181 /*
5181 5182 * inputs:
5182 5183 * zc_name name of new filesystem or snapshot
5183 5184 * zc_value full name of old snapshot
5184 5185 *
5185 5186 * outputs:
5186 5187 * zc_cookie space in bytes
5187 5188 * zc_objset_type compressed space in bytes
5188 5189 * zc_perm_action uncompressed space in bytes
5189 5190 */
5190 5191 static int
5191 5192 zfs_ioc_space_written(zfs_cmd_t *zc)
5192 5193 {
5193 5194 int error;
5194 5195 dsl_pool_t *dp;
5195 5196 dsl_dataset_t *new, *old;
5196 5197
5197 5198 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
5198 5199 if (error != 0)
5199 5200 return (error);
5200 5201 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new);
5201 5202 if (error != 0) {
5202 5203 dsl_pool_rele(dp, FTAG);
5203 5204 return (error);
5204 5205 }
5205 5206 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old);
5206 5207 if (error != 0) {
5207 5208 dsl_dataset_rele(new, FTAG);
5208 5209 dsl_pool_rele(dp, FTAG);
5209 5210 return (error);
5210 5211 }
5211 5212
5212 5213 error = dsl_dataset_space_written(old, new, &zc->zc_cookie,
5213 5214 &zc->zc_objset_type, &zc->zc_perm_action);
5214 5215 dsl_dataset_rele(old, FTAG);
5215 5216 dsl_dataset_rele(new, FTAG);
5216 5217 dsl_pool_rele(dp, FTAG);
5217 5218 return (error);
5218 5219 }
5219 5220
5220 5221 /*
5221 5222 * innvl: {
5222 5223 * "firstsnap" -> snapshot name
5223 5224 * }
5224 5225 *
5225 5226 * outnvl: {
5226 5227 * "used" -> space in bytes
5227 5228 * "compressed" -> compressed space in bytes
5228 5229 * "uncompressed" -> uncompressed space in bytes
5229 5230 * }
5230 5231 */
5231 5232 static int
5232 5233 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl)
5233 5234 {
5234 5235 int error;
5235 5236 dsl_pool_t *dp;
5236 5237 dsl_dataset_t *new, *old;
5237 5238 char *firstsnap;
5238 5239 uint64_t used, comp, uncomp;
5239 5240
5240 5241 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0)
5241 5242 return (SET_ERROR(EINVAL));
5242 5243
5243 5244 error = dsl_pool_hold(lastsnap, FTAG, &dp);
5244 5245 if (error != 0)
5245 5246 return (error);
5246 5247
5247 5248 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new);
5248 5249 if (error == 0 && !new->ds_is_snapshot) {
5249 5250 dsl_dataset_rele(new, FTAG);
5250 5251 error = SET_ERROR(EINVAL);
5251 5252 }
5252 5253 if (error != 0) {
5253 5254 dsl_pool_rele(dp, FTAG);
5254 5255 return (error);
5255 5256 }
5256 5257 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old);
5257 5258 if (error == 0 && !old->ds_is_snapshot) {
5258 5259 dsl_dataset_rele(old, FTAG);
5259 5260 error = SET_ERROR(EINVAL);
5260 5261 }
5261 5262 if (error != 0) {
5262 5263 dsl_dataset_rele(new, FTAG);
5263 5264 dsl_pool_rele(dp, FTAG);
5264 5265 return (error);
5265 5266 }
5266 5267
5267 5268 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp);
5268 5269 dsl_dataset_rele(old, FTAG);
5269 5270 dsl_dataset_rele(new, FTAG);
5270 5271 dsl_pool_rele(dp, FTAG);
5271 5272 fnvlist_add_uint64(outnvl, "used", used);
5272 5273 fnvlist_add_uint64(outnvl, "compressed", comp);
5273 5274 fnvlist_add_uint64(outnvl, "uncompressed", uncomp);
5274 5275 return (error);
5275 5276 }
5276 5277
5277 5278 /*
5278 5279 * innvl: {
5279 5280 * "fd" -> file descriptor to write stream to (int32)
5280 5281 * (optional) "fromsnap" -> full snap name to send an incremental from
5281 5282 * (optional) "largeblockok" -> (value ignored)
5282 5283 * indicates that blocks > 128KB are permitted
5283 5284 * (optional) "embedok" -> (value ignored)
5284 5285 * presence indicates DRR_WRITE_EMBEDDED records are permitted
5285 5286 * }
5286 5287 *
5287 5288 * outnvl is unused
5288 5289 */
5289 5290 /* ARGSUSED */
5290 5291 static int
5291 5292 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl)
5292 5293 {
5293 5294 int error;
5294 5295 offset_t off;
5295 5296 char *fromname = NULL;
5296 5297 int fd;
5297 5298 boolean_t largeblockok;
5298 5299 boolean_t embedok;
5299 5300
5300 5301 error = nvlist_lookup_int32(innvl, "fd", &fd);
5301 5302 if (error != 0)
5302 5303 return (SET_ERROR(EINVAL));
5303 5304
5304 5305 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname);
5305 5306
5306 5307 largeblockok = nvlist_exists(innvl, "largeblockok");
5307 5308 embedok = nvlist_exists(innvl, "embedok");
5308 5309
5309 5310 file_t *fp = getf(fd);
5310 5311 if (fp == NULL)
5311 5312 return (SET_ERROR(EBADF));
5312 5313
5313 5314 off = fp->f_offset;
5314 5315 error = dmu_send(snapname, fromname, embedok, largeblockok,
5315 5316 fd, fp->f_vnode, &off);
5316 5317
5317 5318 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
5318 5319 fp->f_offset = off;
5319 5320 releasef(fd);
5320 5321 return (error);
5321 5322 }
5322 5323
5323 5324 /*
5324 5325 * Determine approximately how large a zfs send stream will be -- the number
5325 5326 * of bytes that will be written to the fd supplied to zfs_ioc_send_new().
5326 5327 *
5327 5328 * innvl: {
5328 5329 * (optional) "from" -> full snap or bookmark name to send an incremental
5329 5330 * from
5330 5331 * }
5331 5332 *
5332 5333 * outnvl: {
5333 5334 * "space" -> bytes of space (uint64)
5334 5335 * }
5335 5336 */
5336 5337 static int
5337 5338 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl)
5338 5339 {
5339 5340 dsl_pool_t *dp;
5340 5341 dsl_dataset_t *tosnap;
5341 5342 int error;
5342 5343 char *fromname;
5343 5344 uint64_t space;
5344 5345
5345 5346 error = dsl_pool_hold(snapname, FTAG, &dp);
5346 5347 if (error != 0)
5347 5348 return (error);
5348 5349
5349 5350 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap);
5350 5351 if (error != 0) {
5351 5352 dsl_pool_rele(dp, FTAG);
5352 5353 return (error);
5353 5354 }
5354 5355
5355 5356 error = nvlist_lookup_string(innvl, "from", &fromname);
5356 5357 if (error == 0) {
5357 5358 if (strchr(fromname, '@') != NULL) {
5358 5359 /*
5359 5360 * If from is a snapshot, hold it and use the more
5360 5361 * efficient dmu_send_estimate to estimate send space
5361 5362 * size using deadlists.
5362 5363 */
5363 5364 dsl_dataset_t *fromsnap;
5364 5365 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap);
5365 5366 if (error != 0)
5366 5367 goto out;
5367 5368 error = dmu_send_estimate(tosnap, fromsnap, &space);
5368 5369 dsl_dataset_rele(fromsnap, FTAG);
5369 5370 } else if (strchr(fromname, '#') != NULL) {
5370 5371 /*
5371 5372 * If from is a bookmark, fetch the creation TXG of the
5372 5373 * snapshot it was created from and use that to find
5373 5374 * blocks that were born after it.
5374 5375 */
5375 5376 zfs_bookmark_phys_t frombm;
5376 5377
5377 5378 error = dsl_bookmark_lookup(dp, fromname, tosnap,
5378 5379 &frombm);
5379 5380 if (error != 0)
5380 5381 goto out;
5381 5382 error = dmu_send_estimate_from_txg(tosnap,
5382 5383 frombm.zbm_creation_txg, &space);
5383 5384 } else {
5384 5385 /*
5385 5386 * from is not properly formatted as a snapshot or
5386 5387 * bookmark
5387 5388 */
5388 5389 error = SET_ERROR(EINVAL);
5389 5390 goto out;
5390 5391 }
5391 5392 } else {
5392 5393 // If estimating the size of a full send, use dmu_send_estimate
5393 5394 error = dmu_send_estimate(tosnap, NULL, &space);
5394 5395 }
5395 5396
5396 5397 fnvlist_add_uint64(outnvl, "space", space);
5397 5398
5398 5399 out:
5399 5400 dsl_dataset_rele(tosnap, FTAG);
5400 5401 dsl_pool_rele(dp, FTAG);
5401 5402 return (error);
5402 5403 }
5403 5404
5404 5405 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST];
5405 5406
5406 5407 static void
5407 5408 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5408 5409 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
5409 5410 boolean_t log_history, zfs_ioc_poolcheck_t pool_check)
5410 5411 {
5411 5412 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST];
5412 5413
5413 5414 ASSERT3U(ioc, >=, ZFS_IOC_FIRST);
5414 5415 ASSERT3U(ioc, <, ZFS_IOC_LAST);
5415 5416 ASSERT3P(vec->zvec_legacy_func, ==, NULL);
5416 5417 ASSERT3P(vec->zvec_func, ==, NULL);
5417 5418
5418 5419 vec->zvec_legacy_func = func;
5419 5420 vec->zvec_secpolicy = secpolicy;
5420 5421 vec->zvec_namecheck = namecheck;
5421 5422 vec->zvec_allow_log = log_history;
5422 5423 vec->zvec_pool_check = pool_check;
5423 5424 }
5424 5425
5425 5426 /*
5426 5427 * See the block comment at the beginning of this file for details on
5427 5428 * each argument to this function.
5428 5429 */
5429 5430 static void
5430 5431 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func,
5431 5432 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
5432 5433 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist,
5433 5434 boolean_t allow_log)
5434 5435 {
5435 5436 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST];
5436 5437
5437 5438 ASSERT3U(ioc, >=, ZFS_IOC_FIRST);
5438 5439 ASSERT3U(ioc, <, ZFS_IOC_LAST);
5439 5440 ASSERT3P(vec->zvec_legacy_func, ==, NULL);
5440 5441 ASSERT3P(vec->zvec_func, ==, NULL);
5441 5442
5442 5443 /* if we are logging, the name must be valid */
5443 5444 ASSERT(!allow_log || namecheck != NO_NAME);
5444 5445
5445 5446 vec->zvec_name = name;
5446 5447 vec->zvec_func = func;
5447 5448 vec->zvec_secpolicy = secpolicy;
5448 5449 vec->zvec_namecheck = namecheck;
5449 5450 vec->zvec_pool_check = pool_check;
5450 5451 vec->zvec_smush_outnvlist = smush_outnvlist;
5451 5452 vec->zvec_allow_log = allow_log;
5452 5453 }
5453 5454
5454 5455 static void
5455 5456 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5456 5457 zfs_secpolicy_func_t *secpolicy, boolean_t log_history,
5457 5458 zfs_ioc_poolcheck_t pool_check)
5458 5459 {
5459 5460 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5460 5461 POOL_NAME, log_history, pool_check);
5461 5462 }
5462 5463
5463 5464 static void
5464 5465 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5465 5466 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check)
5466 5467 {
5467 5468 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5468 5469 DATASET_NAME, B_FALSE, pool_check);
5469 5470 }
5470 5471
5471 5472 static void
5472 5473 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func)
5473 5474 {
5474 5475 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config,
5475 5476 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5476 5477 }
5477 5478
5478 5479 static void
5479 5480 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5480 5481 zfs_secpolicy_func_t *secpolicy)
5481 5482 {
5482 5483 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5483 5484 NO_NAME, B_FALSE, POOL_CHECK_NONE);
5484 5485 }
5485 5486
5486 5487 static void
5487 5488 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc,
5488 5489 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy)
5489 5490 {
5490 5491 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5491 5492 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED);
5492 5493 }
5493 5494
5494 5495 static void
5495 5496 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func)
5496 5497 {
5497 5498 zfs_ioctl_register_dataset_read_secpolicy(ioc, func,
5498 5499 zfs_secpolicy_read);
5499 5500 }
5500 5501
5501 5502 static void
5502 5503 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5503 5504 zfs_secpolicy_func_t *secpolicy)
5504 5505 {
5505 5506 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5506 5507 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5507 5508 }
5508 5509
5509 5510 static void
5510 5511 zfs_ioctl_init(void)
5511 5512 {
5512 5513 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT,
5513 5514 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME,
5514 5515 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5515 5516
5516 5517 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY,
5517 5518 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME,
5518 5519 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE);
5519 5520
5520 5521 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS,
5521 5522 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME,
5522 5523 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5523 5524
5524 5525 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW,
5525 5526 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME,
5526 5527 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5527 5528
5528 5529 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE,
5529 5530 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME,
5530 5531 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5531 5532
5532 5533 zfs_ioctl_register("create", ZFS_IOC_CREATE,
5533 5534 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME,
5534 5535 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5535 5536
5536 5537 zfs_ioctl_register("clone", ZFS_IOC_CLONE,
5537 5538 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME,
5538 5539 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5539 5540
5540 5541 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS,
5541 5542 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME,
5542 5543 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5543 5544
5544 5545 zfs_ioctl_register("hold", ZFS_IOC_HOLD,
5545 5546 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME,
5546 5547 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5547 5548 zfs_ioctl_register("release", ZFS_IOC_RELEASE,
5548 5549 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME,
5549 5550 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5550 5551
5551 5552 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS,
5552 5553 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME,
5553 5554 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5554 5555
5555 5556 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK,
5556 5557 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME,
5557 5558 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE);
5558 5559
5559 5560 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK,
5560 5561 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME,
5561 5562 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5562 5563
5563 5564 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS,
5564 5565 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME,
5565 5566 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5566 5567
5567 5568 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS,
5568 5569 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks,
5569 5570 POOL_NAME,
5570 5571 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5571 5572
5572 5573 /* IOCTLS that use the legacy function signature */
5573 5574
5574 5575 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze,
5575 5576 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY);
5576 5577
5577 5578 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create,
5578 5579 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5579 5580 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN,
5580 5581 zfs_ioc_pool_scan);
5581 5582 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE,
5582 5583 zfs_ioc_pool_upgrade);
5583 5584 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD,
5584 5585 zfs_ioc_vdev_add);
5585 5586 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE,
5586 5587 zfs_ioc_vdev_remove);
5587 5588 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE,
5588 5589 zfs_ioc_vdev_set_state);
5589 5590 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH,
5590 5591 zfs_ioc_vdev_attach);
5591 5592 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH,
5592 5593 zfs_ioc_vdev_detach);
5593 5594 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH,
5594 5595 zfs_ioc_vdev_setpath);
5595 5596 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU,
5596 5597 zfs_ioc_vdev_setfru);
5597 5598 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS,
5598 5599 zfs_ioc_pool_set_props);
5599 5600 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT,
5600 5601 zfs_ioc_vdev_split);
5601 5602 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID,
5602 5603 zfs_ioc_pool_reguid);
5603 5604
5604 5605 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS,
5605 5606 zfs_ioc_pool_configs, zfs_secpolicy_none);
5606 5607 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT,
5607 5608 zfs_ioc_pool_tryimport, zfs_secpolicy_config);
5608 5609 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT,
5609 5610 zfs_ioc_inject_fault, zfs_secpolicy_inject);
5610 5611 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT,
5611 5612 zfs_ioc_clear_fault, zfs_secpolicy_inject);
5612 5613 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT,
5613 5614 zfs_ioc_inject_list_next, zfs_secpolicy_inject);
5614 5615
5615 5616 /*
5616 5617 * pool destroy, and export don't log the history as part of
5617 5618 * zfsdev_ioctl, but rather zfs_ioc_pool_export
5618 5619 * does the logging of those commands.
5619 5620 */
5620 5621 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy,
5621 5622 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE);
5622 5623 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export,
5623 5624 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE);
5624 5625
5625 5626 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats,
5626 5627 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE);
5627 5628 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props,
5628 5629 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE);
5629 5630
5630 5631 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log,
5631 5632 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED);
5632 5633 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME,
5633 5634 zfs_ioc_dsobj_to_dsname,
5634 5635 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED);
5635 5636 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY,
5636 5637 zfs_ioc_pool_get_history,
5637 5638 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED);
5638 5639
5639 5640 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import,
5640 5641 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5641 5642
5642 5643 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear,
5643 5644 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5644 5645 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen,
5645 5646 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED);
5646 5647
5647 5648 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN,
5648 5649 zfs_ioc_space_written);
5649 5650 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS,
5650 5651 zfs_ioc_objset_recvd_props);
5651 5652 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ,
5652 5653 zfs_ioc_next_obj);
5653 5654 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL,
5654 5655 zfs_ioc_get_fsacl);
5655 5656 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS,
5656 5657 zfs_ioc_objset_stats);
5657 5658 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS,
5658 5659 zfs_ioc_objset_zplprops);
5659 5660 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT,
5660 5661 zfs_ioc_dataset_list_next);
5661 5662 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT,
5662 5663 zfs_ioc_snapshot_list_next);
5663 5664 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS,
5664 5665 zfs_ioc_send_progress);
5665 5666
5666 5667 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF,
5667 5668 zfs_ioc_diff, zfs_secpolicy_diff);
5668 5669 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS,
5669 5670 zfs_ioc_obj_to_stats, zfs_secpolicy_diff);
5670 5671 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH,
5671 5672 zfs_ioc_obj_to_path, zfs_secpolicy_diff);
5672 5673 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE,
5673 5674 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one);
5674 5675 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY,
5675 5676 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many);
5676 5677 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND,
5677 5678 zfs_ioc_send, zfs_secpolicy_send);
5678 5679
5679 5680 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop,
5680 5681 zfs_secpolicy_none);
5681 5682 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy,
5682 5683 zfs_secpolicy_destroy);
5683 5684 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename,
5684 5685 zfs_secpolicy_rename);
5685 5686 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv,
5686 5687 zfs_secpolicy_recv);
5687 5688 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote,
5688 5689 zfs_secpolicy_promote);
5689 5690 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP,
5690 5691 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop);
5691 5692 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl,
5692 5693 zfs_secpolicy_set_fsacl);
5693 5694
5694 5695 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share,
5695 5696 zfs_secpolicy_share, POOL_CHECK_NONE);
5696 5697 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl,
5697 5698 zfs_secpolicy_smb_acl, POOL_CHECK_NONE);
5698 5699 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE,
5699 5700 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade,
5700 5701 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5701 5702 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT,
5702 5703 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot,
5703 5704 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5704 5705 }
5705 5706
5706 5707 int
5707 5708 pool_status_check(const char *name, zfs_ioc_namecheck_t type,
5708 5709 zfs_ioc_poolcheck_t check)
5709 5710 {
5710 5711 spa_t *spa;
5711 5712 int error;
5712 5713
5713 5714 ASSERT(type == POOL_NAME || type == DATASET_NAME);
5714 5715
5715 5716 if (check & POOL_CHECK_NONE)
5716 5717 return (0);
5717 5718
5718 5719 error = spa_open(name, &spa, FTAG);
5719 5720 if (error == 0) {
5720 5721 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa))
5721 5722 error = SET_ERROR(EAGAIN);
5722 5723 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa))
5723 5724 error = SET_ERROR(EROFS);
5724 5725 spa_close(spa, FTAG);
5725 5726 }
5726 5727 return (error);
5727 5728 }
5728 5729
5729 5730 /*
5730 5731 * Find a free minor number.
5731 5732 */
5732 5733 minor_t
5733 5734 zfsdev_minor_alloc(void)
5734 5735 {
5735 5736 static minor_t last_minor;
5736 5737 minor_t m;
5737 5738
5738 5739 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5739 5740
5740 5741 for (m = last_minor + 1; m != last_minor; m++) {
5741 5742 if (m > ZFSDEV_MAX_MINOR)
5742 5743 m = 1;
5743 5744 if (ddi_get_soft_state(zfsdev_state, m) == NULL) {
5744 5745 last_minor = m;
5745 5746 return (m);
5746 5747 }
5747 5748 }
5748 5749
5749 5750 return (0);
5750 5751 }
5751 5752
5752 5753 static int
5753 5754 zfs_ctldev_init(dev_t *devp)
5754 5755 {
5755 5756 minor_t minor;
5756 5757 zfs_soft_state_t *zs;
5757 5758
5758 5759 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5759 5760 ASSERT(getminor(*devp) == 0);
5760 5761
5761 5762 minor = zfsdev_minor_alloc();
5762 5763 if (minor == 0)
5763 5764 return (SET_ERROR(ENXIO));
5764 5765
5765 5766 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS)
5766 5767 return (SET_ERROR(EAGAIN));
5767 5768
5768 5769 *devp = makedevice(getemajor(*devp), minor);
5769 5770
5770 5771 zs = ddi_get_soft_state(zfsdev_state, minor);
5771 5772 zs->zss_type = ZSST_CTLDEV;
5772 5773 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data);
5773 5774
5774 5775 return (0);
5775 5776 }
5776 5777
5777 5778 static void
5778 5779 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor)
5779 5780 {
5780 5781 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5781 5782
5782 5783 zfs_onexit_destroy(zo);
5783 5784 ddi_soft_state_free(zfsdev_state, minor);
5784 5785 }
5785 5786
5786 5787 void *
5787 5788 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which)
5788 5789 {
5789 5790 zfs_soft_state_t *zp;
5790 5791
5791 5792 zp = ddi_get_soft_state(zfsdev_state, minor);
5792 5793 if (zp == NULL || zp->zss_type != which)
5793 5794 return (NULL);
5794 5795
5795 5796 return (zp->zss_data);
5796 5797 }
5797 5798
5798 5799 static int
5799 5800 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr)
5800 5801 {
5801 5802 int error = 0;
5802 5803
5803 5804 if (getminor(*devp) != 0)
5804 5805 return (zvol_open(devp, flag, otyp, cr));
5805 5806
5806 5807 /* This is the control device. Allocate a new minor if requested. */
5807 5808 if (flag & FEXCL) {
5808 5809 mutex_enter(&zfsdev_state_lock);
5809 5810 error = zfs_ctldev_init(devp);
5810 5811 mutex_exit(&zfsdev_state_lock);
5811 5812 }
5812 5813
5813 5814 return (error);
5814 5815 }
5815 5816
5816 5817 static int
5817 5818 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr)
5818 5819 {
5819 5820 zfs_onexit_t *zo;
5820 5821 minor_t minor = getminor(dev);
5821 5822
5822 5823 if (minor == 0)
5823 5824 return (0);
5824 5825
5825 5826 mutex_enter(&zfsdev_state_lock);
5826 5827 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV);
5827 5828 if (zo == NULL) {
5828 5829 mutex_exit(&zfsdev_state_lock);
5829 5830 return (zvol_close(dev, flag, otyp, cr));
5830 5831 }
5831 5832 zfs_ctldev_destroy(zo, minor);
5832 5833 mutex_exit(&zfsdev_state_lock);
5833 5834
5834 5835 return (0);
5835 5836 }
5836 5837
5837 5838 static int
5838 5839 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp)
5839 5840 {
5840 5841 zfs_cmd_t *zc;
5841 5842 uint_t vecnum;
5842 5843 int error, rc, len;
5843 5844 minor_t minor = getminor(dev);
5844 5845 const zfs_ioc_vec_t *vec;
5845 5846 char *saved_poolname = NULL;
5846 5847 nvlist_t *innvl = NULL;
5847 5848
5848 5849 if (minor != 0 &&
5849 5850 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL)
5850 5851 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp));
5851 5852
5852 5853 vecnum = cmd - ZFS_IOC_FIRST;
5853 5854 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip));
5854 5855
5855 5856 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
5856 5857 return (SET_ERROR(EINVAL));
5857 5858 vec = &zfs_ioc_vec[vecnum];
5858 5859
5859 5860 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
5860 5861
5861 5862 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag);
5862 5863 if (error != 0) {
5863 5864 error = SET_ERROR(EFAULT);
5864 5865 goto out;
5865 5866 }
5866 5867
5867 5868 zc->zc_iflags = flag & FKIOCTL;
5868 5869 if (zc->zc_nvlist_src_size != 0) {
5869 5870 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
5870 5871 zc->zc_iflags, &innvl);
5871 5872 if (error != 0)
5872 5873 goto out;
5873 5874 }
5874 5875
5875 5876 /*
5876 5877 * Ensure that all pool/dataset names are valid before we pass down to
5877 5878 * the lower layers.
5878 5879 */
5879 5880 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
5880 5881 switch (vec->zvec_namecheck) {
5881 5882 case POOL_NAME:
5882 5883 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
5883 5884 error = SET_ERROR(EINVAL);
5884 5885 else
5885 5886 error = pool_status_check(zc->zc_name,
5886 5887 vec->zvec_namecheck, vec->zvec_pool_check);
5887 5888 break;
5888 5889
5889 5890 case DATASET_NAME:
5890 5891 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
5891 5892 error = SET_ERROR(EINVAL);
5892 5893 else
5893 5894 error = pool_status_check(zc->zc_name,
5894 5895 vec->zvec_namecheck, vec->zvec_pool_check);
5895 5896 break;
5896 5897
5897 5898 case NO_NAME:
5898 5899 break;
5899 5900 }
5900 5901
5901 5902
5902 5903 if (error == 0 && !(flag & FKIOCTL))
5903 5904 error = vec->zvec_secpolicy(zc, innvl, cr);
5904 5905
5905 5906 if (error != 0)
5906 5907 goto out;
5907 5908
5908 5909 /* legacy ioctls can modify zc_name */
5909 5910 len = strcspn(zc->zc_name, "/@#") + 1;
5910 5911 saved_poolname = kmem_alloc(len, KM_SLEEP);
5911 5912 (void) strlcpy(saved_poolname, zc->zc_name, len);
5912 5913
5913 5914 if (vec->zvec_func != NULL) {
5914 5915 nvlist_t *outnvl;
5915 5916 int puterror = 0;
5916 5917 spa_t *spa;
5917 5918 nvlist_t *lognv = NULL;
5918 5919
5919 5920 ASSERT(vec->zvec_legacy_func == NULL);
5920 5921
5921 5922 /*
5922 5923 * Add the innvl to the lognv before calling the func,
5923 5924 * in case the func changes the innvl.
5924 5925 */
5925 5926 if (vec->zvec_allow_log) {
5926 5927 lognv = fnvlist_alloc();
5927 5928 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL,
5928 5929 vec->zvec_name);
5929 5930 if (!nvlist_empty(innvl)) {
5930 5931 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL,
5931 5932 innvl);
5932 5933 }
5933 5934 }
5934 5935
5935 5936 outnvl = fnvlist_alloc();
5936 5937 error = vec->zvec_func(zc->zc_name, innvl, outnvl);
5937 5938
5938 5939 if (error == 0 && vec->zvec_allow_log &&
5939 5940 spa_open(zc->zc_name, &spa, FTAG) == 0) {
5940 5941 if (!nvlist_empty(outnvl)) {
5941 5942 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL,
5942 5943 outnvl);
5943 5944 }
5944 5945 (void) spa_history_log_nvl(spa, lognv);
5945 5946 spa_close(spa, FTAG);
5946 5947 }
5947 5948 fnvlist_free(lognv);
5948 5949
5949 5950 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) {
5950 5951 int smusherror = 0;
5951 5952 if (vec->zvec_smush_outnvlist) {
5952 5953 smusherror = nvlist_smush(outnvl,
5953 5954 zc->zc_nvlist_dst_size);
5954 5955 }
5955 5956 if (smusherror == 0)
5956 5957 puterror = put_nvlist(zc, outnvl);
5957 5958 }
5958 5959
5959 5960 if (puterror != 0)
5960 5961 error = puterror;
5961 5962
5962 5963 nvlist_free(outnvl);
5963 5964 } else {
5964 5965 error = vec->zvec_legacy_func(zc);
5965 5966 }
5966 5967
5967 5968 out:
5968 5969 nvlist_free(innvl);
5969 5970 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag);
5970 5971 if (error == 0 && rc != 0)
5971 5972 error = SET_ERROR(EFAULT);
5972 5973 if (error == 0 && vec->zvec_allow_log) {
5973 5974 char *s = tsd_get(zfs_allow_log_key);
5974 5975 if (s != NULL)
5975 5976 strfree(s);
5976 5977 (void) tsd_set(zfs_allow_log_key, saved_poolname);
5977 5978 } else {
5978 5979 if (saved_poolname != NULL)
5979 5980 strfree(saved_poolname);
5980 5981 }
5981 5982
5982 5983 kmem_free(zc, sizeof (zfs_cmd_t));
5983 5984 return (error);
5984 5985 }
5985 5986
5986 5987 static int
5987 5988 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
5988 5989 {
5989 5990 if (cmd != DDI_ATTACH)
5990 5991 return (DDI_FAILURE);
5991 5992
5992 5993 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0,
5993 5994 DDI_PSEUDO, 0) == DDI_FAILURE)
5994 5995 return (DDI_FAILURE);
5995 5996
5996 5997 zfs_dip = dip;
5997 5998
5998 5999 ddi_report_dev(dip);
5999 6000
6000 6001 return (DDI_SUCCESS);
6001 6002 }
6002 6003
6003 6004 static int
6004 6005 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
6005 6006 {
6006 6007 if (spa_busy() || zfs_busy() || zvol_busy())
6007 6008 return (DDI_FAILURE);
6008 6009
6009 6010 if (cmd != DDI_DETACH)
6010 6011 return (DDI_FAILURE);
6011 6012
6012 6013 zfs_dip = NULL;
6013 6014
6014 6015 ddi_prop_remove_all(dip);
6015 6016 ddi_remove_minor_node(dip, NULL);
6016 6017
6017 6018 return (DDI_SUCCESS);
6018 6019 }
6019 6020
6020 6021 /*ARGSUSED*/
6021 6022 static int
6022 6023 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
6023 6024 {
6024 6025 switch (infocmd) {
6025 6026 case DDI_INFO_DEVT2DEVINFO:
6026 6027 *result = zfs_dip;
6027 6028 return (DDI_SUCCESS);
6028 6029
6029 6030 case DDI_INFO_DEVT2INSTANCE:
6030 6031 *result = (void *)0;
6031 6032 return (DDI_SUCCESS);
6032 6033 }
6033 6034
6034 6035 return (DDI_FAILURE);
6035 6036 }
6036 6037
6037 6038 /*
6038 6039 * OK, so this is a little weird.
6039 6040 *
6040 6041 * /dev/zfs is the control node, i.e. minor 0.
6041 6042 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0.
6042 6043 *
6043 6044 * /dev/zfs has basically nothing to do except serve up ioctls,
6044 6045 * so most of the standard driver entry points are in zvol.c.
6045 6046 */
6046 6047 static struct cb_ops zfs_cb_ops = {
6047 6048 zfsdev_open, /* open */
6048 6049 zfsdev_close, /* close */
6049 6050 zvol_strategy, /* strategy */
6050 6051 nodev, /* print */
6051 6052 zvol_dump, /* dump */
6052 6053 zvol_read, /* read */
6053 6054 zvol_write, /* write */
6054 6055 zfsdev_ioctl, /* ioctl */
6055 6056 nodev, /* devmap */
6056 6057 nodev, /* mmap */
6057 6058 nodev, /* segmap */
6058 6059 nochpoll, /* poll */
6059 6060 ddi_prop_op, /* prop_op */
6060 6061 NULL, /* streamtab */
6061 6062 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */
6062 6063 CB_REV, /* version */
6063 6064 nodev, /* async read */
6064 6065 nodev, /* async write */
6065 6066 };
6066 6067
6067 6068 static struct dev_ops zfs_dev_ops = {
6068 6069 DEVO_REV, /* version */
6069 6070 0, /* refcnt */
6070 6071 zfs_info, /* info */
6071 6072 nulldev, /* identify */
6072 6073 nulldev, /* probe */
6073 6074 zfs_attach, /* attach */
6074 6075 zfs_detach, /* detach */
6075 6076 nodev, /* reset */
6076 6077 &zfs_cb_ops, /* driver operations */
6077 6078 NULL, /* no bus operations */
6078 6079 NULL, /* power */
6079 6080 ddi_quiesce_not_needed, /* quiesce */
6080 6081 };
6081 6082
6082 6083 static struct modldrv zfs_modldrv = {
6083 6084 &mod_driverops,
6084 6085 "ZFS storage pool",
6085 6086 &zfs_dev_ops
6086 6087 };
6087 6088
6088 6089 static struct modlinkage modlinkage = {
6089 6090 MODREV_1,
6090 6091 (void *)&zfs_modlfs,
6091 6092 (void *)&zfs_modldrv,
6092 6093 NULL
6093 6094 };
6094 6095
6095 6096 static void
6096 6097 zfs_allow_log_destroy(void *arg)
6097 6098 {
6098 6099 char *poolname = arg;
6099 6100 strfree(poolname);
6100 6101 }
6101 6102
6102 6103 int
6103 6104 _init(void)
6104 6105 {
6105 6106 int error;
6106 6107
6107 6108 spa_init(FREAD | FWRITE);
6108 6109 zfs_init();
6109 6110 zvol_init();
6110 6111 zfs_ioctl_init();
6111 6112
6112 6113 if ((error = mod_install(&modlinkage)) != 0) {
6113 6114 zvol_fini();
6114 6115 zfs_fini();
6115 6116 spa_fini();
6116 6117 return (error);
6117 6118 }
6118 6119
6119 6120 tsd_create(&zfs_fsyncer_key, NULL);
6120 6121 tsd_create(&rrw_tsd_key, rrw_tsd_destroy);
6121 6122 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy);
6122 6123
6123 6124 error = ldi_ident_from_mod(&modlinkage, &zfs_li);
6124 6125 ASSERT(error == 0);
6125 6126 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL);
6126 6127
6127 6128 return (0);
6128 6129 }
6129 6130
6130 6131 int
6131 6132 _fini(void)
6132 6133 {
6133 6134 int error;
6134 6135
6135 6136 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled)
6136 6137 return (SET_ERROR(EBUSY));
6137 6138
6138 6139 if ((error = mod_remove(&modlinkage)) != 0)
6139 6140 return (error);
6140 6141
6141 6142 zvol_fini();
6142 6143 zfs_fini();
6143 6144 spa_fini();
6144 6145 if (zfs_nfsshare_inited)
6145 6146 (void) ddi_modclose(nfs_mod);
6146 6147 if (zfs_smbshare_inited)
6147 6148 (void) ddi_modclose(smbsrv_mod);
6148 6149 if (zfs_nfsshare_inited || zfs_smbshare_inited)
6149 6150 (void) ddi_modclose(sharefs_mod);
6150 6151
6151 6152 tsd_destroy(&zfs_fsyncer_key);
6152 6153 ldi_ident_release(zfs_li);
6153 6154 zfs_li = NULL;
6154 6155 mutex_destroy(&zfs_share_lock);
6155 6156
6156 6157 return (error);
6157 6158 }
6158 6159
6159 6160 int
6160 6161 _info(struct modinfo *modinfop)
6161 6162 {
6162 6163 return (mod_info(&modlinkage, modinfop));
6163 6164 }
|
↓ open down ↓ |
1091 lines elided |
↑ open up ↑ |
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX