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7127 remove -Wno-missing-braces from Makefile.uts
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--- 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 * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved.
25 25 * Portions Copyright 2011 Martin Matuska
26 26 * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved.
27 27 * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
28 28 * Copyright (c) 2014, 2016 Joyent, Inc. All rights reserved.
29 29 * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
30 30 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
31 31 * Copyright (c) 2013 Steven Hartland. All rights reserved.
32 32 * Copyright (c) 2014 Integros [integros.com]
33 33 */
34 34
35 35 /*
36 36 * ZFS ioctls.
37 37 *
38 38 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage
39 39 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool.
40 40 *
41 41 * There are two ways that we handle ioctls: the legacy way where almost
42 42 * all of the logic is in the ioctl callback, and the new way where most
43 43 * of the marshalling is handled in the common entry point, zfsdev_ioctl().
44 44 *
45 45 * Non-legacy ioctls should be registered by calling
46 46 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked
47 47 * from userland by lzc_ioctl().
48 48 *
49 49 * The registration arguments are as follows:
50 50 *
51 51 * const char *name
52 52 * The name of the ioctl. This is used for history logging. If the
53 53 * ioctl returns successfully (the callback returns 0), and allow_log
54 54 * is true, then a history log entry will be recorded with the input &
55 55 * output nvlists. The log entry can be printed with "zpool history -i".
56 56 *
57 57 * zfs_ioc_t ioc
58 58 * The ioctl request number, which userland will pass to ioctl(2).
59 59 * The ioctl numbers can change from release to release, because
60 60 * the caller (libzfs) must be matched to the kernel.
61 61 *
62 62 * zfs_secpolicy_func_t *secpolicy
63 63 * This function will be called before the zfs_ioc_func_t, to
64 64 * determine if this operation is permitted. It should return EPERM
65 65 * on failure, and 0 on success. Checks include determining if the
66 66 * dataset is visible in this zone, and if the user has either all
67 67 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission
68 68 * to do this operation on this dataset with "zfs allow".
69 69 *
70 70 * zfs_ioc_namecheck_t namecheck
71 71 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool
72 72 * name, a dataset name, or nothing. If the name is not well-formed,
73 73 * the ioctl will fail and the callback will not be called.
74 74 * Therefore, the callback can assume that the name is well-formed
75 75 * (e.g. is null-terminated, doesn't have more than one '@' character,
76 76 * doesn't have invalid characters).
77 77 *
78 78 * zfs_ioc_poolcheck_t pool_check
79 79 * This specifies requirements on the pool state. If the pool does
80 80 * not meet them (is suspended or is readonly), the ioctl will fail
81 81 * and the callback will not be called. If any checks are specified
82 82 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME.
83 83 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED |
84 84 * POOL_CHECK_READONLY).
85 85 *
86 86 * boolean_t smush_outnvlist
87 87 * If smush_outnvlist is true, then the output is presumed to be a
88 88 * list of errors, and it will be "smushed" down to fit into the
89 89 * caller's buffer, by removing some entries and replacing them with a
90 90 * single "N_MORE_ERRORS" entry indicating how many were removed. See
91 91 * nvlist_smush() for details. If smush_outnvlist is false, and the
92 92 * outnvlist does not fit into the userland-provided buffer, then the
93 93 * ioctl will fail with ENOMEM.
94 94 *
95 95 * zfs_ioc_func_t *func
96 96 * The callback function that will perform the operation.
97 97 *
98 98 * The callback should return 0 on success, or an error number on
99 99 * failure. If the function fails, the userland ioctl will return -1,
100 100 * and errno will be set to the callback's return value. The callback
101 101 * will be called with the following arguments:
102 102 *
103 103 * const char *name
104 104 * The name of the pool or dataset to operate on, from
105 105 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the
106 106 * expected type (pool, dataset, or none).
107 107 *
108 108 * nvlist_t *innvl
109 109 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or
110 110 * NULL if no input nvlist was provided. Changes to this nvlist are
111 111 * ignored. If the input nvlist could not be deserialized, the
112 112 * ioctl will fail and the callback will not be called.
113 113 *
114 114 * nvlist_t *outnvl
115 115 * The output nvlist, initially empty. The callback can fill it in,
116 116 * and it will be returned to userland by serializing it into
117 117 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization
118 118 * fails (e.g. because the caller didn't supply a large enough
119 119 * buffer), then the overall ioctl will fail. See the
120 120 * 'smush_nvlist' argument above for additional behaviors.
121 121 *
122 122 * There are two typical uses of the output nvlist:
123 123 * - To return state, e.g. property values. In this case,
124 124 * smush_outnvlist should be false. If the buffer was not large
125 125 * enough, the caller will reallocate a larger buffer and try
126 126 * the ioctl again.
127 127 *
128 128 * - To return multiple errors from an ioctl which makes on-disk
129 129 * changes. In this case, smush_outnvlist should be true.
130 130 * Ioctls which make on-disk modifications should generally not
131 131 * use the outnvl if they succeed, because the caller can not
132 132 * distinguish between the operation failing, and
133 133 * deserialization failing.
134 134 */
135 135
136 136 #include <sys/types.h>
137 137 #include <sys/param.h>
138 138 #include <sys/errno.h>
139 139 #include <sys/uio.h>
140 140 #include <sys/buf.h>
141 141 #include <sys/modctl.h>
142 142 #include <sys/open.h>
143 143 #include <sys/file.h>
144 144 #include <sys/kmem.h>
145 145 #include <sys/conf.h>
146 146 #include <sys/cmn_err.h>
147 147 #include <sys/stat.h>
148 148 #include <sys/zfs_ioctl.h>
149 149 #include <sys/zfs_vfsops.h>
150 150 #include <sys/zfs_znode.h>
151 151 #include <sys/zap.h>
152 152 #include <sys/spa.h>
153 153 #include <sys/spa_impl.h>
154 154 #include <sys/vdev.h>
155 155 #include <sys/priv_impl.h>
156 156 #include <sys/dmu.h>
157 157 #include <sys/dsl_dir.h>
158 158 #include <sys/dsl_dataset.h>
159 159 #include <sys/dsl_prop.h>
160 160 #include <sys/dsl_deleg.h>
161 161 #include <sys/dmu_objset.h>
162 162 #include <sys/dmu_impl.h>
163 163 #include <sys/dmu_tx.h>
164 164 #include <sys/ddi.h>
165 165 #include <sys/sunddi.h>
166 166 #include <sys/sunldi.h>
167 167 #include <sys/policy.h>
168 168 #include <sys/zone.h>
169 169 #include <sys/nvpair.h>
170 170 #include <sys/pathname.h>
171 171 #include <sys/mount.h>
172 172 #include <sys/sdt.h>
173 173 #include <sys/fs/zfs.h>
174 174 #include <sys/zfs_ctldir.h>
175 175 #include <sys/zfs_dir.h>
176 176 #include <sys/zfs_onexit.h>
177 177 #include <sys/zvol.h>
178 178 #include <sys/dsl_scan.h>
179 179 #include <sharefs/share.h>
180 180 #include <sys/dmu_objset.h>
181 181 #include <sys/dmu_send.h>
182 182 #include <sys/dsl_destroy.h>
183 183 #include <sys/dsl_bookmark.h>
184 184 #include <sys/dsl_userhold.h>
185 185 #include <sys/zfeature.h>
186 186 #include <sys/zio_checksum.h>
187 187
188 188 #include "zfs_namecheck.h"
189 189 #include "zfs_prop.h"
190 190 #include "zfs_deleg.h"
191 191 #include "zfs_comutil.h"
192 192
193 193 extern struct modlfs zfs_modlfs;
194 194
195 195 extern void zfs_init(void);
196 196 extern void zfs_fini(void);
197 197
198 198 ldi_ident_t zfs_li = NULL;
199 199 dev_info_t *zfs_dip;
200 200
201 201 uint_t zfs_fsyncer_key;
202 202 extern uint_t rrw_tsd_key;
203 203 static uint_t zfs_allow_log_key;
204 204
205 205 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *);
206 206 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *);
207 207 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *);
208 208
209 209 typedef enum {
210 210 NO_NAME,
211 211 POOL_NAME,
212 212 DATASET_NAME
213 213 } zfs_ioc_namecheck_t;
214 214
215 215 typedef enum {
216 216 POOL_CHECK_NONE = 1 << 0,
217 217 POOL_CHECK_SUSPENDED = 1 << 1,
218 218 POOL_CHECK_READONLY = 1 << 2,
219 219 } zfs_ioc_poolcheck_t;
220 220
221 221 typedef struct zfs_ioc_vec {
222 222 zfs_ioc_legacy_func_t *zvec_legacy_func;
223 223 zfs_ioc_func_t *zvec_func;
224 224 zfs_secpolicy_func_t *zvec_secpolicy;
225 225 zfs_ioc_namecheck_t zvec_namecheck;
226 226 boolean_t zvec_allow_log;
227 227 zfs_ioc_poolcheck_t zvec_pool_check;
228 228 boolean_t zvec_smush_outnvlist;
229 229 const char *zvec_name;
230 230 } zfs_ioc_vec_t;
231 231
232 232 /* This array is indexed by zfs_userquota_prop_t */
233 233 static const char *userquota_perms[] = {
234 234 ZFS_DELEG_PERM_USERUSED,
235 235 ZFS_DELEG_PERM_USERQUOTA,
236 236 ZFS_DELEG_PERM_GROUPUSED,
237 237 ZFS_DELEG_PERM_GROUPQUOTA,
238 238 };
239 239
240 240 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc);
241 241 static int zfs_check_settable(const char *name, nvpair_t *property,
242 242 cred_t *cr);
243 243 static int zfs_check_clearable(char *dataset, nvlist_t *props,
244 244 nvlist_t **errors);
245 245 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *,
246 246 boolean_t *);
247 247 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *);
248 248 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp);
249 249
250 250 static int zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature);
251 251
252 252 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */
253 253 void
254 254 __dprintf(const char *file, const char *func, int line, const char *fmt, ...)
255 255 {
256 256 const char *newfile;
257 257 char buf[512];
258 258 va_list adx;
259 259
260 260 /*
261 261 * Get rid of annoying "../common/" prefix to filename.
262 262 */
263 263 newfile = strrchr(file, '/');
264 264 if (newfile != NULL) {
265 265 newfile = newfile + 1; /* Get rid of leading / */
266 266 } else {
267 267 newfile = file;
268 268 }
269 269
270 270 va_start(adx, fmt);
271 271 (void) vsnprintf(buf, sizeof (buf), fmt, adx);
272 272 va_end(adx);
273 273
274 274 /*
275 275 * To get this data, use the zfs-dprintf probe as so:
276 276 * dtrace -q -n 'zfs-dprintf \
277 277 * /stringof(arg0) == "dbuf.c"/ \
278 278 * {printf("%s: %s", stringof(arg1), stringof(arg3))}'
279 279 * arg0 = file name
280 280 * arg1 = function name
281 281 * arg2 = line number
282 282 * arg3 = message
283 283 */
284 284 DTRACE_PROBE4(zfs__dprintf,
285 285 char *, newfile, char *, func, int, line, char *, buf);
286 286 }
287 287
288 288 static void
289 289 history_str_free(char *buf)
290 290 {
291 291 kmem_free(buf, HIS_MAX_RECORD_LEN);
292 292 }
293 293
294 294 static char *
295 295 history_str_get(zfs_cmd_t *zc)
296 296 {
297 297 char *buf;
298 298
299 299 if (zc->zc_history == NULL)
300 300 return (NULL);
301 301
302 302 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP);
303 303 if (copyinstr((void *)(uintptr_t)zc->zc_history,
304 304 buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
305 305 history_str_free(buf);
306 306 return (NULL);
307 307 }
308 308
309 309 buf[HIS_MAX_RECORD_LEN -1] = '\0';
310 310
311 311 return (buf);
312 312 }
313 313
314 314 /*
315 315 * Check to see if the named dataset is currently defined as bootable
316 316 */
317 317 static boolean_t
318 318 zfs_is_bootfs(const char *name)
319 319 {
320 320 objset_t *os;
321 321
322 322 if (dmu_objset_hold(name, FTAG, &os) == 0) {
323 323 boolean_t ret;
324 324 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os)));
325 325 dmu_objset_rele(os, FTAG);
326 326 return (ret);
327 327 }
328 328 return (B_FALSE);
329 329 }
330 330
331 331 /*
332 332 * Return non-zero if the spa version is less than requested version.
333 333 */
334 334 static int
335 335 zfs_earlier_version(const char *name, int version)
336 336 {
337 337 spa_t *spa;
338 338
339 339 if (spa_open(name, &spa, FTAG) == 0) {
340 340 if (spa_version(spa) < version) {
341 341 spa_close(spa, FTAG);
342 342 return (1);
343 343 }
344 344 spa_close(spa, FTAG);
345 345 }
346 346 return (0);
347 347 }
348 348
349 349 /*
350 350 * Return TRUE if the ZPL version is less than requested version.
351 351 */
352 352 static boolean_t
353 353 zpl_earlier_version(const char *name, int version)
354 354 {
355 355 objset_t *os;
356 356 boolean_t rc = B_TRUE;
357 357
358 358 if (dmu_objset_hold(name, FTAG, &os) == 0) {
359 359 uint64_t zplversion;
360 360
361 361 if (dmu_objset_type(os) != DMU_OST_ZFS) {
362 362 dmu_objset_rele(os, FTAG);
363 363 return (B_TRUE);
364 364 }
365 365 /* XXX reading from non-owned objset */
366 366 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0)
367 367 rc = zplversion < version;
368 368 dmu_objset_rele(os, FTAG);
369 369 }
370 370 return (rc);
371 371 }
372 372
373 373 static void
374 374 zfs_log_history(zfs_cmd_t *zc)
375 375 {
376 376 spa_t *spa;
377 377 char *buf;
378 378
379 379 if ((buf = history_str_get(zc)) == NULL)
380 380 return;
381 381
382 382 if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
383 383 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
384 384 (void) spa_history_log(spa, buf);
385 385 spa_close(spa, FTAG);
386 386 }
387 387 history_str_free(buf);
388 388 }
389 389
390 390 /*
391 391 * Policy for top-level read operations (list pools). Requires no privileges,
392 392 * and can be used in the local zone, as there is no associated dataset.
393 393 */
394 394 /* ARGSUSED */
395 395 static int
396 396 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
397 397 {
398 398 return (0);
399 399 }
400 400
401 401 /*
402 402 * Policy for dataset read operations (list children, get statistics). Requires
403 403 * no privileges, but must be visible in the local zone.
404 404 */
405 405 /* ARGSUSED */
406 406 static int
407 407 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
408 408 {
409 409 if (INGLOBALZONE(curproc) ||
410 410 zone_dataset_visible(zc->zc_name, NULL))
411 411 return (0);
412 412
413 413 return (SET_ERROR(ENOENT));
414 414 }
415 415
416 416 static int
417 417 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr)
418 418 {
419 419 int writable = 1;
420 420
421 421 /*
422 422 * The dataset must be visible by this zone -- check this first
423 423 * so they don't see EPERM on something they shouldn't know about.
424 424 */
425 425 if (!INGLOBALZONE(curproc) &&
426 426 !zone_dataset_visible(dataset, &writable))
427 427 return (SET_ERROR(ENOENT));
428 428
429 429 if (INGLOBALZONE(curproc)) {
430 430 /*
431 431 * If the fs is zoned, only root can access it from the
432 432 * global zone.
433 433 */
434 434 if (secpolicy_zfs(cr) && zoned)
435 435 return (SET_ERROR(EPERM));
436 436 } else {
437 437 /*
438 438 * If we are in a local zone, the 'zoned' property must be set.
439 439 */
440 440 if (!zoned)
441 441 return (SET_ERROR(EPERM));
442 442
443 443 /* must be writable by this zone */
444 444 if (!writable)
445 445 return (SET_ERROR(EPERM));
446 446 }
447 447 return (0);
448 448 }
449 449
450 450 static int
451 451 zfs_dozonecheck(const char *dataset, cred_t *cr)
452 452 {
453 453 uint64_t zoned;
454 454
455 455 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
456 456 return (SET_ERROR(ENOENT));
457 457
458 458 return (zfs_dozonecheck_impl(dataset, zoned, cr));
459 459 }
460 460
461 461 static int
462 462 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr)
463 463 {
464 464 uint64_t zoned;
465 465
466 466 if (dsl_prop_get_int_ds(ds, "zoned", &zoned))
467 467 return (SET_ERROR(ENOENT));
468 468
469 469 return (zfs_dozonecheck_impl(dataset, zoned, cr));
470 470 }
471 471
472 472 static int
473 473 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds,
474 474 const char *perm, cred_t *cr)
475 475 {
476 476 int error;
477 477
478 478 error = zfs_dozonecheck_ds(name, ds, cr);
479 479 if (error == 0) {
480 480 error = secpolicy_zfs(cr);
481 481 if (error != 0)
482 482 error = dsl_deleg_access_impl(ds, perm, cr);
483 483 }
484 484 return (error);
485 485 }
486 486
487 487 static int
488 488 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
489 489 {
490 490 int error;
491 491 dsl_dataset_t *ds;
492 492 dsl_pool_t *dp;
493 493
494 494 error = dsl_pool_hold(name, FTAG, &dp);
495 495 if (error != 0)
496 496 return (error);
497 497
498 498 error = dsl_dataset_hold(dp, name, FTAG, &ds);
499 499 if (error != 0) {
500 500 dsl_pool_rele(dp, FTAG);
501 501 return (error);
502 502 }
503 503
504 504 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr);
505 505
506 506 dsl_dataset_rele(ds, FTAG);
507 507 dsl_pool_rele(dp, FTAG);
508 508 return (error);
509 509 }
510 510
511 511 /*
512 512 * Policy for setting the security label property.
513 513 *
514 514 * Returns 0 for success, non-zero for access and other errors.
515 515 */
516 516 static int
517 517 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr)
518 518 {
519 519 char ds_hexsl[MAXNAMELEN];
520 520 bslabel_t ds_sl, new_sl;
521 521 boolean_t new_default = FALSE;
522 522 uint64_t zoned;
523 523 int needed_priv = -1;
524 524 int error;
525 525
526 526 /* First get the existing dataset label. */
527 527 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL),
528 528 1, sizeof (ds_hexsl), &ds_hexsl, NULL);
529 529 if (error != 0)
530 530 return (SET_ERROR(EPERM));
531 531
532 532 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
533 533 new_default = TRUE;
534 534
535 535 /* The label must be translatable */
536 536 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0))
537 537 return (SET_ERROR(EINVAL));
538 538
539 539 /*
540 540 * In a non-global zone, disallow attempts to set a label that
541 541 * doesn't match that of the zone; otherwise no other checks
542 542 * are needed.
543 543 */
544 544 if (!INGLOBALZONE(curproc)) {
545 545 if (new_default || !blequal(&new_sl, CR_SL(CRED())))
546 546 return (SET_ERROR(EPERM));
547 547 return (0);
548 548 }
549 549
550 550 /*
551 551 * For global-zone datasets (i.e., those whose zoned property is
552 552 * "off", verify that the specified new label is valid for the
553 553 * global zone.
554 554 */
555 555 if (dsl_prop_get_integer(name,
556 556 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL))
557 557 return (SET_ERROR(EPERM));
558 558 if (!zoned) {
559 559 if (zfs_check_global_label(name, strval) != 0)
560 560 return (SET_ERROR(EPERM));
561 561 }
562 562
563 563 /*
564 564 * If the existing dataset label is nondefault, check if the
565 565 * dataset is mounted (label cannot be changed while mounted).
566 566 * Get the zfsvfs; if there isn't one, then the dataset isn't
567 567 * mounted (or isn't a dataset, doesn't exist, ...).
568 568 */
569 569 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) {
570 570 objset_t *os;
571 571 static char *setsl_tag = "setsl_tag";
572 572
573 573 /*
574 574 * Try to own the dataset; abort if there is any error,
575 575 * (e.g., already mounted, in use, or other error).
576 576 */
577 577 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE,
578 578 setsl_tag, &os);
579 579 if (error != 0)
580 580 return (SET_ERROR(EPERM));
581 581
582 582 dmu_objset_disown(os, setsl_tag);
583 583
584 584 if (new_default) {
585 585 needed_priv = PRIV_FILE_DOWNGRADE_SL;
586 586 goto out_check;
587 587 }
588 588
589 589 if (hexstr_to_label(strval, &new_sl) != 0)
590 590 return (SET_ERROR(EPERM));
591 591
592 592 if (blstrictdom(&ds_sl, &new_sl))
593 593 needed_priv = PRIV_FILE_DOWNGRADE_SL;
594 594 else if (blstrictdom(&new_sl, &ds_sl))
595 595 needed_priv = PRIV_FILE_UPGRADE_SL;
596 596 } else {
597 597 /* dataset currently has a default label */
598 598 if (!new_default)
599 599 needed_priv = PRIV_FILE_UPGRADE_SL;
600 600 }
601 601
602 602 out_check:
603 603 if (needed_priv != -1)
604 604 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL));
605 605 return (0);
606 606 }
607 607
608 608 static int
609 609 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval,
610 610 cred_t *cr)
611 611 {
612 612 char *strval;
613 613
614 614 /*
615 615 * Check permissions for special properties.
616 616 */
617 617 switch (prop) {
618 618 case ZFS_PROP_ZONED:
619 619 /*
620 620 * Disallow setting of 'zoned' from within a local zone.
621 621 */
622 622 if (!INGLOBALZONE(curproc))
623 623 return (SET_ERROR(EPERM));
624 624 break;
625 625
626 626 case ZFS_PROP_QUOTA:
627 627 case ZFS_PROP_FILESYSTEM_LIMIT:
628 628 case ZFS_PROP_SNAPSHOT_LIMIT:
629 629 if (!INGLOBALZONE(curproc)) {
630 630 uint64_t zoned;
631 631 char setpoint[ZFS_MAX_DATASET_NAME_LEN];
632 632 /*
633 633 * Unprivileged users are allowed to modify the
634 634 * limit on things *under* (ie. contained by)
635 635 * the thing they own.
636 636 */
637 637 if (dsl_prop_get_integer(dsname, "zoned", &zoned,
638 638 setpoint))
639 639 return (SET_ERROR(EPERM));
640 640 if (!zoned || strlen(dsname) <= strlen(setpoint))
641 641 return (SET_ERROR(EPERM));
642 642 }
643 643 break;
644 644
645 645 case ZFS_PROP_MLSLABEL:
646 646 if (!is_system_labeled())
647 647 return (SET_ERROR(EPERM));
648 648
649 649 if (nvpair_value_string(propval, &strval) == 0) {
650 650 int err;
651 651
652 652 err = zfs_set_slabel_policy(dsname, strval, CRED());
653 653 if (err != 0)
654 654 return (err);
655 655 }
656 656 break;
657 657 }
658 658
659 659 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr));
660 660 }
661 661
662 662 /* ARGSUSED */
663 663 static int
664 664 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
665 665 {
666 666 int error;
667 667
668 668 error = zfs_dozonecheck(zc->zc_name, cr);
669 669 if (error != 0)
670 670 return (error);
671 671
672 672 /*
673 673 * permission to set permissions will be evaluated later in
674 674 * dsl_deleg_can_allow()
675 675 */
676 676 return (0);
677 677 }
678 678
679 679 /* ARGSUSED */
680 680 static int
681 681 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
682 682 {
683 683 return (zfs_secpolicy_write_perms(zc->zc_name,
684 684 ZFS_DELEG_PERM_ROLLBACK, cr));
685 685 }
686 686
687 687 /* ARGSUSED */
688 688 static int
689 689 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
690 690 {
691 691 dsl_pool_t *dp;
692 692 dsl_dataset_t *ds;
693 693 char *cp;
694 694 int error;
695 695
696 696 /*
697 697 * Generate the current snapshot name from the given objsetid, then
698 698 * use that name for the secpolicy/zone checks.
699 699 */
700 700 cp = strchr(zc->zc_name, '@');
701 701 if (cp == NULL)
702 702 return (SET_ERROR(EINVAL));
703 703 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
704 704 if (error != 0)
705 705 return (error);
706 706
707 707 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
708 708 if (error != 0) {
709 709 dsl_pool_rele(dp, FTAG);
710 710 return (error);
711 711 }
712 712
713 713 dsl_dataset_name(ds, zc->zc_name);
714 714
715 715 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds,
716 716 ZFS_DELEG_PERM_SEND, cr);
717 717 dsl_dataset_rele(ds, FTAG);
718 718 dsl_pool_rele(dp, FTAG);
719 719
720 720 return (error);
721 721 }
722 722
723 723 /* ARGSUSED */
724 724 static int
725 725 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
726 726 {
727 727 return (zfs_secpolicy_write_perms(zc->zc_name,
728 728 ZFS_DELEG_PERM_SEND, cr));
729 729 }
730 730
731 731 /* ARGSUSED */
732 732 static int
733 733 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
734 734 {
735 735 vnode_t *vp;
736 736 int error;
737 737
738 738 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
739 739 NO_FOLLOW, NULL, &vp)) != 0)
740 740 return (error);
741 741
742 742 /* Now make sure mntpnt and dataset are ZFS */
743 743
744 744 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
745 745 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
746 746 zc->zc_name) != 0)) {
747 747 VN_RELE(vp);
748 748 return (SET_ERROR(EPERM));
749 749 }
750 750
751 751 VN_RELE(vp);
752 752 return (dsl_deleg_access(zc->zc_name,
753 753 ZFS_DELEG_PERM_SHARE, cr));
754 754 }
755 755
756 756 int
757 757 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
758 758 {
759 759 if (!INGLOBALZONE(curproc))
760 760 return (SET_ERROR(EPERM));
761 761
762 762 if (secpolicy_nfs(cr) == 0) {
763 763 return (0);
764 764 } else {
765 765 return (zfs_secpolicy_deleg_share(zc, innvl, cr));
766 766 }
767 767 }
768 768
769 769 int
770 770 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
771 771 {
772 772 if (!INGLOBALZONE(curproc))
773 773 return (SET_ERROR(EPERM));
774 774
775 775 if (secpolicy_smb(cr) == 0) {
776 776 return (0);
777 777 } else {
778 778 return (zfs_secpolicy_deleg_share(zc, innvl, cr));
779 779 }
780 780 }
781 781
782 782 static int
783 783 zfs_get_parent(const char *datasetname, char *parent, int parentsize)
784 784 {
785 785 char *cp;
786 786
787 787 /*
788 788 * Remove the @bla or /bla from the end of the name to get the parent.
789 789 */
790 790 (void) strncpy(parent, datasetname, parentsize);
791 791 cp = strrchr(parent, '@');
792 792 if (cp != NULL) {
793 793 cp[0] = '\0';
794 794 } else {
795 795 cp = strrchr(parent, '/');
796 796 if (cp == NULL)
797 797 return (SET_ERROR(ENOENT));
798 798 cp[0] = '\0';
799 799 }
800 800
801 801 return (0);
802 802 }
803 803
804 804 int
805 805 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
806 806 {
807 807 int error;
808 808
809 809 if ((error = zfs_secpolicy_write_perms(name,
810 810 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
811 811 return (error);
812 812
813 813 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
814 814 }
815 815
816 816 /* ARGSUSED */
817 817 static int
818 818 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
819 819 {
820 820 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
821 821 }
822 822
823 823 /*
824 824 * Destroying snapshots with delegated permissions requires
825 825 * descendant mount and destroy permissions.
826 826 */
827 827 /* ARGSUSED */
828 828 static int
829 829 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
830 830 {
831 831 nvlist_t *snaps;
832 832 nvpair_t *pair, *nextpair;
833 833 int error = 0;
834 834
835 835 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
836 836 return (SET_ERROR(EINVAL));
837 837 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
838 838 pair = nextpair) {
839 839 nextpair = nvlist_next_nvpair(snaps, pair);
840 840 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr);
841 841 if (error == ENOENT) {
842 842 /*
843 843 * Ignore any snapshots that don't exist (we consider
844 844 * them "already destroyed"). Remove the name from the
845 845 * nvl here in case the snapshot is created between
846 846 * now and when we try to destroy it (in which case
847 847 * we don't want to destroy it since we haven't
848 848 * checked for permission).
849 849 */
850 850 fnvlist_remove_nvpair(snaps, pair);
851 851 error = 0;
852 852 }
853 853 if (error != 0)
854 854 break;
855 855 }
856 856
857 857 return (error);
858 858 }
859 859
860 860 int
861 861 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
862 862 {
863 863 char parentname[ZFS_MAX_DATASET_NAME_LEN];
864 864 int error;
865 865
866 866 if ((error = zfs_secpolicy_write_perms(from,
867 867 ZFS_DELEG_PERM_RENAME, cr)) != 0)
868 868 return (error);
869 869
870 870 if ((error = zfs_secpolicy_write_perms(from,
871 871 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
872 872 return (error);
873 873
874 874 if ((error = zfs_get_parent(to, parentname,
875 875 sizeof (parentname))) != 0)
876 876 return (error);
877 877
878 878 if ((error = zfs_secpolicy_write_perms(parentname,
879 879 ZFS_DELEG_PERM_CREATE, cr)) != 0)
880 880 return (error);
881 881
882 882 if ((error = zfs_secpolicy_write_perms(parentname,
883 883 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
884 884 return (error);
885 885
886 886 return (error);
887 887 }
888 888
889 889 /* ARGSUSED */
890 890 static int
891 891 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
892 892 {
893 893 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));
894 894 }
895 895
896 896 /* ARGSUSED */
897 897 static int
898 898 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
899 899 {
900 900 dsl_pool_t *dp;
901 901 dsl_dataset_t *clone;
902 902 int error;
903 903
904 904 error = zfs_secpolicy_write_perms(zc->zc_name,
905 905 ZFS_DELEG_PERM_PROMOTE, cr);
906 906 if (error != 0)
907 907 return (error);
908 908
909 909 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
910 910 if (error != 0)
911 911 return (error);
912 912
913 913 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone);
914 914
915 915 if (error == 0) {
916 916 char parentname[ZFS_MAX_DATASET_NAME_LEN];
917 917 dsl_dataset_t *origin = NULL;
918 918 dsl_dir_t *dd;
919 919 dd = clone->ds_dir;
920 920
921 921 error = dsl_dataset_hold_obj(dd->dd_pool,
922 922 dsl_dir_phys(dd)->dd_origin_obj, FTAG, &origin);
923 923 if (error != 0) {
924 924 dsl_dataset_rele(clone, FTAG);
925 925 dsl_pool_rele(dp, FTAG);
926 926 return (error);
927 927 }
928 928
929 929 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone,
930 930 ZFS_DELEG_PERM_MOUNT, cr);
931 931
932 932 dsl_dataset_name(origin, parentname);
933 933 if (error == 0) {
934 934 error = zfs_secpolicy_write_perms_ds(parentname, origin,
935 935 ZFS_DELEG_PERM_PROMOTE, cr);
936 936 }
937 937 dsl_dataset_rele(clone, FTAG);
938 938 dsl_dataset_rele(origin, FTAG);
939 939 }
940 940 dsl_pool_rele(dp, FTAG);
941 941 return (error);
942 942 }
943 943
944 944 /* ARGSUSED */
945 945 static int
946 946 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
947 947 {
948 948 int error;
949 949
950 950 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
951 951 ZFS_DELEG_PERM_RECEIVE, cr)) != 0)
952 952 return (error);
953 953
954 954 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
955 955 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
956 956 return (error);
957 957
958 958 return (zfs_secpolicy_write_perms(zc->zc_name,
959 959 ZFS_DELEG_PERM_CREATE, cr));
960 960 }
961 961
962 962 int
963 963 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
964 964 {
965 965 return (zfs_secpolicy_write_perms(name,
966 966 ZFS_DELEG_PERM_SNAPSHOT, cr));
967 967 }
968 968
969 969 /*
970 970 * Check for permission to create each snapshot in the nvlist.
971 971 */
972 972 /* ARGSUSED */
973 973 static int
974 974 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
975 975 {
976 976 nvlist_t *snaps;
977 977 int error = 0;
978 978 nvpair_t *pair;
979 979
980 980 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
981 981 return (SET_ERROR(EINVAL));
982 982 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
983 983 pair = nvlist_next_nvpair(snaps, pair)) {
984 984 char *name = nvpair_name(pair);
985 985 char *atp = strchr(name, '@');
986 986
987 987 if (atp == NULL) {
988 988 error = SET_ERROR(EINVAL);
989 989 break;
990 990 }
991 991 *atp = '\0';
992 992 error = zfs_secpolicy_snapshot_perms(name, cr);
993 993 *atp = '@';
994 994 if (error != 0)
995 995 break;
996 996 }
997 997 return (error);
998 998 }
999 999
1000 1000 /*
1001 1001 * Check for permission to create each snapshot in the nvlist.
1002 1002 */
1003 1003 /* ARGSUSED */
1004 1004 static int
1005 1005 zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1006 1006 {
1007 1007 int error = 0;
1008 1008
1009 1009 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL);
1010 1010 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) {
1011 1011 char *name = nvpair_name(pair);
1012 1012 char *hashp = strchr(name, '#');
1013 1013
1014 1014 if (hashp == NULL) {
1015 1015 error = SET_ERROR(EINVAL);
1016 1016 break;
1017 1017 }
1018 1018 *hashp = '\0';
1019 1019 error = zfs_secpolicy_write_perms(name,
1020 1020 ZFS_DELEG_PERM_BOOKMARK, cr);
1021 1021 *hashp = '#';
1022 1022 if (error != 0)
1023 1023 break;
1024 1024 }
1025 1025 return (error);
1026 1026 }
1027 1027
1028 1028 /* ARGSUSED */
1029 1029 static int
1030 1030 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1031 1031 {
1032 1032 nvpair_t *pair, *nextpair;
1033 1033 int error = 0;
1034 1034
1035 1035 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL;
1036 1036 pair = nextpair) {
1037 1037 char *name = nvpair_name(pair);
1038 1038 char *hashp = strchr(name, '#');
1039 1039 nextpair = nvlist_next_nvpair(innvl, pair);
1040 1040
1041 1041 if (hashp == NULL) {
1042 1042 error = SET_ERROR(EINVAL);
1043 1043 break;
1044 1044 }
1045 1045
1046 1046 *hashp = '\0';
1047 1047 error = zfs_secpolicy_write_perms(name,
1048 1048 ZFS_DELEG_PERM_DESTROY, cr);
1049 1049 *hashp = '#';
1050 1050 if (error == ENOENT) {
1051 1051 /*
1052 1052 * Ignore any filesystems that don't exist (we consider
1053 1053 * their bookmarks "already destroyed"). Remove
1054 1054 * the name from the nvl here in case the filesystem
1055 1055 * is created between now and when we try to destroy
1056 1056 * the bookmark (in which case we don't want to
1057 1057 * destroy it since we haven't checked for permission).
1058 1058 */
1059 1059 fnvlist_remove_nvpair(innvl, pair);
1060 1060 error = 0;
1061 1061 }
1062 1062 if (error != 0)
1063 1063 break;
1064 1064 }
1065 1065
1066 1066 return (error);
1067 1067 }
1068 1068
1069 1069 /* ARGSUSED */
1070 1070 static int
1071 1071 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1072 1072 {
1073 1073 /*
1074 1074 * Even root must have a proper TSD so that we know what pool
1075 1075 * to log to.
1076 1076 */
1077 1077 if (tsd_get(zfs_allow_log_key) == NULL)
1078 1078 return (SET_ERROR(EPERM));
1079 1079 return (0);
1080 1080 }
1081 1081
1082 1082 static int
1083 1083 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1084 1084 {
1085 1085 char parentname[ZFS_MAX_DATASET_NAME_LEN];
1086 1086 int error;
1087 1087 char *origin;
1088 1088
1089 1089 if ((error = zfs_get_parent(zc->zc_name, parentname,
1090 1090 sizeof (parentname))) != 0)
1091 1091 return (error);
1092 1092
1093 1093 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 &&
1094 1094 (error = zfs_secpolicy_write_perms(origin,
1095 1095 ZFS_DELEG_PERM_CLONE, cr)) != 0)
1096 1096 return (error);
1097 1097
1098 1098 if ((error = zfs_secpolicy_write_perms(parentname,
1099 1099 ZFS_DELEG_PERM_CREATE, cr)) != 0)
1100 1100 return (error);
1101 1101
1102 1102 return (zfs_secpolicy_write_perms(parentname,
1103 1103 ZFS_DELEG_PERM_MOUNT, cr));
1104 1104 }
1105 1105
1106 1106 /*
1107 1107 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires
1108 1108 * SYS_CONFIG privilege, which is not available in a local zone.
1109 1109 */
1110 1110 /* ARGSUSED */
1111 1111 static int
1112 1112 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1113 1113 {
1114 1114 if (secpolicy_sys_config(cr, B_FALSE) != 0)
1115 1115 return (SET_ERROR(EPERM));
1116 1116
1117 1117 return (0);
1118 1118 }
1119 1119
1120 1120 /*
1121 1121 * Policy for object to name lookups.
1122 1122 */
1123 1123 /* ARGSUSED */
1124 1124 static int
1125 1125 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1126 1126 {
1127 1127 int error;
1128 1128
1129 1129 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0)
1130 1130 return (0);
1131 1131
1132 1132 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr);
1133 1133 return (error);
1134 1134 }
1135 1135
1136 1136 /*
1137 1137 * Policy for fault injection. Requires all privileges.
1138 1138 */
1139 1139 /* ARGSUSED */
1140 1140 static int
1141 1141 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1142 1142 {
1143 1143 return (secpolicy_zinject(cr));
1144 1144 }
1145 1145
1146 1146 /* ARGSUSED */
1147 1147 static int
1148 1148 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1149 1149 {
1150 1150 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
1151 1151
1152 1152 if (prop == ZPROP_INVAL) {
1153 1153 if (!zfs_prop_user(zc->zc_value))
1154 1154 return (SET_ERROR(EINVAL));
1155 1155 return (zfs_secpolicy_write_perms(zc->zc_name,
1156 1156 ZFS_DELEG_PERM_USERPROP, cr));
1157 1157 } else {
1158 1158 return (zfs_secpolicy_setprop(zc->zc_name, prop,
1159 1159 NULL, cr));
1160 1160 }
1161 1161 }
1162 1162
1163 1163 static int
1164 1164 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1165 1165 {
1166 1166 int err = zfs_secpolicy_read(zc, innvl, cr);
1167 1167 if (err)
1168 1168 return (err);
1169 1169
1170 1170 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
1171 1171 return (SET_ERROR(EINVAL));
1172 1172
1173 1173 if (zc->zc_value[0] == 0) {
1174 1174 /*
1175 1175 * They are asking about a posix uid/gid. If it's
1176 1176 * themself, allow it.
1177 1177 */
1178 1178 if (zc->zc_objset_type == ZFS_PROP_USERUSED ||
1179 1179 zc->zc_objset_type == ZFS_PROP_USERQUOTA) {
1180 1180 if (zc->zc_guid == crgetuid(cr))
1181 1181 return (0);
1182 1182 } else {
1183 1183 if (groupmember(zc->zc_guid, cr))
1184 1184 return (0);
1185 1185 }
1186 1186 }
1187 1187
1188 1188 return (zfs_secpolicy_write_perms(zc->zc_name,
1189 1189 userquota_perms[zc->zc_objset_type], cr));
1190 1190 }
1191 1191
1192 1192 static int
1193 1193 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1194 1194 {
1195 1195 int err = zfs_secpolicy_read(zc, innvl, cr);
1196 1196 if (err)
1197 1197 return (err);
1198 1198
1199 1199 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
1200 1200 return (SET_ERROR(EINVAL));
1201 1201
1202 1202 return (zfs_secpolicy_write_perms(zc->zc_name,
1203 1203 userquota_perms[zc->zc_objset_type], cr));
1204 1204 }
1205 1205
1206 1206 /* ARGSUSED */
1207 1207 static int
1208 1208 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1209 1209 {
1210 1210 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION,
1211 1211 NULL, cr));
1212 1212 }
1213 1213
1214 1214 /* ARGSUSED */
1215 1215 static int
1216 1216 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1217 1217 {
1218 1218 nvpair_t *pair;
1219 1219 nvlist_t *holds;
1220 1220 int error;
1221 1221
1222 1222 error = nvlist_lookup_nvlist(innvl, "holds", &holds);
1223 1223 if (error != 0)
1224 1224 return (SET_ERROR(EINVAL));
1225 1225
1226 1226 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
1227 1227 pair = nvlist_next_nvpair(holds, pair)) {
1228 1228 char fsname[ZFS_MAX_DATASET_NAME_LEN];
1229 1229 error = dmu_fsname(nvpair_name(pair), fsname);
1230 1230 if (error != 0)
1231 1231 return (error);
1232 1232 error = zfs_secpolicy_write_perms(fsname,
1233 1233 ZFS_DELEG_PERM_HOLD, cr);
1234 1234 if (error != 0)
1235 1235 return (error);
1236 1236 }
1237 1237 return (0);
1238 1238 }
1239 1239
1240 1240 /* ARGSUSED */
1241 1241 static int
1242 1242 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1243 1243 {
1244 1244 nvpair_t *pair;
1245 1245 int error;
1246 1246
1247 1247 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL;
1248 1248 pair = nvlist_next_nvpair(innvl, pair)) {
1249 1249 char fsname[ZFS_MAX_DATASET_NAME_LEN];
1250 1250 error = dmu_fsname(nvpair_name(pair), fsname);
1251 1251 if (error != 0)
1252 1252 return (error);
1253 1253 error = zfs_secpolicy_write_perms(fsname,
1254 1254 ZFS_DELEG_PERM_RELEASE, cr);
1255 1255 if (error != 0)
1256 1256 return (error);
1257 1257 }
1258 1258 return (0);
1259 1259 }
1260 1260
1261 1261 /*
1262 1262 * Policy for allowing temporary snapshots to be taken or released
1263 1263 */
1264 1264 static int
1265 1265 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1266 1266 {
1267 1267 /*
1268 1268 * A temporary snapshot is the same as a snapshot,
1269 1269 * hold, destroy and release all rolled into one.
1270 1270 * Delegated diff alone is sufficient that we allow this.
1271 1271 */
1272 1272 int error;
1273 1273
1274 1274 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
1275 1275 ZFS_DELEG_PERM_DIFF, cr)) == 0)
1276 1276 return (0);
1277 1277
1278 1278 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr);
1279 1279 if (error == 0)
1280 1280 error = zfs_secpolicy_hold(zc, innvl, cr);
1281 1281 if (error == 0)
1282 1282 error = zfs_secpolicy_release(zc, innvl, cr);
1283 1283 if (error == 0)
1284 1284 error = zfs_secpolicy_destroy(zc, innvl, cr);
1285 1285 return (error);
1286 1286 }
1287 1287
1288 1288 /*
1289 1289 * Returns the nvlist as specified by the user in the zfs_cmd_t.
1290 1290 */
1291 1291 static int
1292 1292 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp)
1293 1293 {
1294 1294 char *packed;
1295 1295 int error;
1296 1296 nvlist_t *list = NULL;
1297 1297
1298 1298 /*
1299 1299 * Read in and unpack the user-supplied nvlist.
1300 1300 */
1301 1301 if (size == 0)
1302 1302 return (SET_ERROR(EINVAL));
1303 1303
1304 1304 packed = kmem_alloc(size, KM_SLEEP);
1305 1305
1306 1306 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
1307 1307 iflag)) != 0) {
1308 1308 kmem_free(packed, size);
1309 1309 return (SET_ERROR(EFAULT));
1310 1310 }
1311 1311
1312 1312 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) {
1313 1313 kmem_free(packed, size);
1314 1314 return (error);
1315 1315 }
1316 1316
1317 1317 kmem_free(packed, size);
1318 1318
1319 1319 *nvp = list;
1320 1320 return (0);
1321 1321 }
1322 1322
1323 1323 /*
1324 1324 * Reduce the size of this nvlist until it can be serialized in 'max' bytes.
1325 1325 * Entries will be removed from the end of the nvlist, and one int32 entry
1326 1326 * named "N_MORE_ERRORS" will be added indicating how many entries were
1327 1327 * removed.
1328 1328 */
1329 1329 static int
1330 1330 nvlist_smush(nvlist_t *errors, size_t max)
1331 1331 {
1332 1332 size_t size;
1333 1333
1334 1334 size = fnvlist_size(errors);
1335 1335
1336 1336 if (size > max) {
1337 1337 nvpair_t *more_errors;
1338 1338 int n = 0;
1339 1339
1340 1340 if (max < 1024)
1341 1341 return (SET_ERROR(ENOMEM));
1342 1342
1343 1343 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0);
1344 1344 more_errors = nvlist_prev_nvpair(errors, NULL);
1345 1345
1346 1346 do {
1347 1347 nvpair_t *pair = nvlist_prev_nvpair(errors,
1348 1348 more_errors);
1349 1349 fnvlist_remove_nvpair(errors, pair);
1350 1350 n++;
1351 1351 size = fnvlist_size(errors);
1352 1352 } while (size > max);
1353 1353
1354 1354 fnvlist_remove_nvpair(errors, more_errors);
1355 1355 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n);
1356 1356 ASSERT3U(fnvlist_size(errors), <=, max);
1357 1357 }
1358 1358
1359 1359 return (0);
1360 1360 }
1361 1361
1362 1362 static int
1363 1363 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
1364 1364 {
1365 1365 char *packed = NULL;
1366 1366 int error = 0;
1367 1367 size_t size;
1368 1368
1369 1369 size = fnvlist_size(nvl);
1370 1370
1371 1371 if (size > zc->zc_nvlist_dst_size) {
1372 1372 error = SET_ERROR(ENOMEM);
1373 1373 } else {
1374 1374 packed = fnvlist_pack(nvl, &size);
1375 1375 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
1376 1376 size, zc->zc_iflags) != 0)
1377 1377 error = SET_ERROR(EFAULT);
1378 1378 fnvlist_pack_free(packed, size);
1379 1379 }
1380 1380
1381 1381 zc->zc_nvlist_dst_size = size;
1382 1382 zc->zc_nvlist_dst_filled = B_TRUE;
1383 1383 return (error);
1384 1384 }
1385 1385
1386 1386 static int
1387 1387 getzfsvfs(const char *dsname, zfsvfs_t **zfvp)
1388 1388 {
1389 1389 objset_t *os;
1390 1390 int error;
1391 1391
1392 1392 error = dmu_objset_hold(dsname, FTAG, &os);
1393 1393 if (error != 0)
1394 1394 return (error);
1395 1395 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1396 1396 dmu_objset_rele(os, FTAG);
1397 1397 return (SET_ERROR(EINVAL));
1398 1398 }
1399 1399
1400 1400 mutex_enter(&os->os_user_ptr_lock);
1401 1401 *zfvp = dmu_objset_get_user(os);
1402 1402 if (*zfvp) {
1403 1403 VFS_HOLD((*zfvp)->z_vfs);
1404 1404 } else {
1405 1405 error = SET_ERROR(ESRCH);
1406 1406 }
1407 1407 mutex_exit(&os->os_user_ptr_lock);
1408 1408 dmu_objset_rele(os, FTAG);
1409 1409 return (error);
1410 1410 }
1411 1411
1412 1412 /*
1413 1413 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which
1414 1414 * case its z_vfs will be NULL, and it will be opened as the owner.
1415 1415 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER,
1416 1416 * which prevents all vnode ops from running.
1417 1417 */
1418 1418 static int
1419 1419 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer)
1420 1420 {
1421 1421 int error = 0;
1422 1422
1423 1423 if (getzfsvfs(name, zfvp) != 0)
1424 1424 error = zfsvfs_create(name, zfvp);
1425 1425 if (error == 0) {
1426 1426 rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER :
1427 1427 RW_READER, tag);
1428 1428 if ((*zfvp)->z_unmounted) {
1429 1429 /*
1430 1430 * XXX we could probably try again, since the unmounting
1431 1431 * thread should be just about to disassociate the
1432 1432 * objset from the zfsvfs.
1433 1433 */
1434 1434 rrm_exit(&(*zfvp)->z_teardown_lock, tag);
1435 1435 return (SET_ERROR(EBUSY));
1436 1436 }
1437 1437 }
1438 1438 return (error);
1439 1439 }
1440 1440
1441 1441 static void
1442 1442 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag)
1443 1443 {
1444 1444 rrm_exit(&zfsvfs->z_teardown_lock, tag);
1445 1445
1446 1446 if (zfsvfs->z_vfs) {
1447 1447 VFS_RELE(zfsvfs->z_vfs);
1448 1448 } else {
1449 1449 dmu_objset_disown(zfsvfs->z_os, zfsvfs);
1450 1450 zfsvfs_free(zfsvfs);
1451 1451 }
1452 1452 }
1453 1453
1454 1454 static int
1455 1455 zfs_ioc_pool_create(zfs_cmd_t *zc)
1456 1456 {
1457 1457 int error;
1458 1458 nvlist_t *config, *props = NULL;
1459 1459 nvlist_t *rootprops = NULL;
1460 1460 nvlist_t *zplprops = NULL;
1461 1461
1462 1462 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1463 1463 zc->zc_iflags, &config))
1464 1464 return (error);
1465 1465
1466 1466 if (zc->zc_nvlist_src_size != 0 && (error =
1467 1467 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1468 1468 zc->zc_iflags, &props))) {
1469 1469 nvlist_free(config);
1470 1470 return (error);
1471 1471 }
1472 1472
1473 1473 if (props) {
1474 1474 nvlist_t *nvl = NULL;
1475 1475 uint64_t version = SPA_VERSION;
1476 1476
1477 1477 (void) nvlist_lookup_uint64(props,
1478 1478 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version);
1479 1479 if (!SPA_VERSION_IS_SUPPORTED(version)) {
1480 1480 error = SET_ERROR(EINVAL);
1481 1481 goto pool_props_bad;
1482 1482 }
1483 1483 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl);
1484 1484 if (nvl) {
1485 1485 error = nvlist_dup(nvl, &rootprops, KM_SLEEP);
1486 1486 if (error != 0) {
1487 1487 nvlist_free(config);
1488 1488 nvlist_free(props);
1489 1489 return (error);
1490 1490 }
1491 1491 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS);
1492 1492 }
1493 1493 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1494 1494 error = zfs_fill_zplprops_root(version, rootprops,
1495 1495 zplprops, NULL);
1496 1496 if (error != 0)
1497 1497 goto pool_props_bad;
1498 1498 }
1499 1499
1500 1500 error = spa_create(zc->zc_name, config, props, zplprops);
1501 1501
1502 1502 /*
1503 1503 * Set the remaining root properties
1504 1504 */
1505 1505 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name,
1506 1506 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0)
1507 1507 (void) spa_destroy(zc->zc_name);
1508 1508
1509 1509 pool_props_bad:
1510 1510 nvlist_free(rootprops);
1511 1511 nvlist_free(zplprops);
1512 1512 nvlist_free(config);
1513 1513 nvlist_free(props);
1514 1514
1515 1515 return (error);
1516 1516 }
1517 1517
1518 1518 static int
1519 1519 zfs_ioc_pool_destroy(zfs_cmd_t *zc)
1520 1520 {
1521 1521 int error;
1522 1522 zfs_log_history(zc);
1523 1523 error = spa_destroy(zc->zc_name);
1524 1524 if (error == 0)
1525 1525 zvol_remove_minors(zc->zc_name);
1526 1526 return (error);
1527 1527 }
1528 1528
1529 1529 static int
1530 1530 zfs_ioc_pool_import(zfs_cmd_t *zc)
1531 1531 {
1532 1532 nvlist_t *config, *props = NULL;
1533 1533 uint64_t guid;
1534 1534 int error;
1535 1535
1536 1536 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1537 1537 zc->zc_iflags, &config)) != 0)
1538 1538 return (error);
1539 1539
1540 1540 if (zc->zc_nvlist_src_size != 0 && (error =
1541 1541 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1542 1542 zc->zc_iflags, &props))) {
1543 1543 nvlist_free(config);
1544 1544 return (error);
1545 1545 }
1546 1546
1547 1547 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
1548 1548 guid != zc->zc_guid)
1549 1549 error = SET_ERROR(EINVAL);
1550 1550 else
1551 1551 error = spa_import(zc->zc_name, config, props, zc->zc_cookie);
1552 1552
1553 1553 if (zc->zc_nvlist_dst != 0) {
1554 1554 int err;
1555 1555
1556 1556 if ((err = put_nvlist(zc, config)) != 0)
1557 1557 error = err;
1558 1558 }
1559 1559
1560 1560 nvlist_free(config);
1561 1561
1562 1562 nvlist_free(props);
1563 1563
1564 1564 return (error);
1565 1565 }
1566 1566
1567 1567 static int
1568 1568 zfs_ioc_pool_export(zfs_cmd_t *zc)
1569 1569 {
1570 1570 int error;
1571 1571 boolean_t force = (boolean_t)zc->zc_cookie;
1572 1572 boolean_t hardforce = (boolean_t)zc->zc_guid;
1573 1573
1574 1574 zfs_log_history(zc);
1575 1575 error = spa_export(zc->zc_name, NULL, force, hardforce);
1576 1576 if (error == 0)
1577 1577 zvol_remove_minors(zc->zc_name);
1578 1578 return (error);
1579 1579 }
1580 1580
1581 1581 static int
1582 1582 zfs_ioc_pool_configs(zfs_cmd_t *zc)
1583 1583 {
1584 1584 nvlist_t *configs;
1585 1585 int error;
1586 1586
1587 1587 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
1588 1588 return (SET_ERROR(EEXIST));
1589 1589
1590 1590 error = put_nvlist(zc, configs);
1591 1591
1592 1592 nvlist_free(configs);
1593 1593
1594 1594 return (error);
1595 1595 }
1596 1596
1597 1597 /*
1598 1598 * inputs:
1599 1599 * zc_name name of the pool
1600 1600 *
1601 1601 * outputs:
1602 1602 * zc_cookie real errno
1603 1603 * zc_nvlist_dst config nvlist
1604 1604 * zc_nvlist_dst_size size of config nvlist
1605 1605 */
1606 1606 static int
1607 1607 zfs_ioc_pool_stats(zfs_cmd_t *zc)
1608 1608 {
1609 1609 nvlist_t *config;
1610 1610 int error;
1611 1611 int ret = 0;
1612 1612
1613 1613 error = spa_get_stats(zc->zc_name, &config, zc->zc_value,
1614 1614 sizeof (zc->zc_value));
1615 1615
1616 1616 if (config != NULL) {
1617 1617 ret = put_nvlist(zc, config);
1618 1618 nvlist_free(config);
1619 1619
1620 1620 /*
1621 1621 * The config may be present even if 'error' is non-zero.
1622 1622 * In this case we return success, and preserve the real errno
1623 1623 * in 'zc_cookie'.
1624 1624 */
1625 1625 zc->zc_cookie = error;
1626 1626 } else {
1627 1627 ret = error;
1628 1628 }
1629 1629
1630 1630 return (ret);
1631 1631 }
1632 1632
1633 1633 /*
1634 1634 * Try to import the given pool, returning pool stats as appropriate so that
1635 1635 * user land knows which devices are available and overall pool health.
1636 1636 */
1637 1637 static int
1638 1638 zfs_ioc_pool_tryimport(zfs_cmd_t *zc)
1639 1639 {
1640 1640 nvlist_t *tryconfig, *config;
1641 1641 int error;
1642 1642
1643 1643 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1644 1644 zc->zc_iflags, &tryconfig)) != 0)
1645 1645 return (error);
1646 1646
1647 1647 config = spa_tryimport(tryconfig);
1648 1648
1649 1649 nvlist_free(tryconfig);
1650 1650
1651 1651 if (config == NULL)
1652 1652 return (SET_ERROR(EINVAL));
1653 1653
1654 1654 error = put_nvlist(zc, config);
1655 1655 nvlist_free(config);
1656 1656
1657 1657 return (error);
1658 1658 }
1659 1659
1660 1660 /*
1661 1661 * inputs:
1662 1662 * zc_name name of the pool
1663 1663 * zc_cookie scan func (pool_scan_func_t)
1664 1664 */
1665 1665 static int
1666 1666 zfs_ioc_pool_scan(zfs_cmd_t *zc)
1667 1667 {
1668 1668 spa_t *spa;
1669 1669 int error;
1670 1670
1671 1671 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1672 1672 return (error);
1673 1673
1674 1674 if (zc->zc_cookie == POOL_SCAN_NONE)
1675 1675 error = spa_scan_stop(spa);
1676 1676 else
1677 1677 error = spa_scan(spa, zc->zc_cookie);
1678 1678
1679 1679 spa_close(spa, FTAG);
1680 1680
1681 1681 return (error);
1682 1682 }
1683 1683
1684 1684 static int
1685 1685 zfs_ioc_pool_freeze(zfs_cmd_t *zc)
1686 1686 {
1687 1687 spa_t *spa;
1688 1688 int error;
1689 1689
1690 1690 error = spa_open(zc->zc_name, &spa, FTAG);
1691 1691 if (error == 0) {
1692 1692 spa_freeze(spa);
1693 1693 spa_close(spa, FTAG);
1694 1694 }
1695 1695 return (error);
1696 1696 }
1697 1697
1698 1698 static int
1699 1699 zfs_ioc_pool_upgrade(zfs_cmd_t *zc)
1700 1700 {
1701 1701 spa_t *spa;
1702 1702 int error;
1703 1703
1704 1704 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1705 1705 return (error);
1706 1706
1707 1707 if (zc->zc_cookie < spa_version(spa) ||
1708 1708 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) {
1709 1709 spa_close(spa, FTAG);
1710 1710 return (SET_ERROR(EINVAL));
1711 1711 }
1712 1712
1713 1713 spa_upgrade(spa, zc->zc_cookie);
1714 1714 spa_close(spa, FTAG);
1715 1715
1716 1716 return (error);
1717 1717 }
1718 1718
1719 1719 static int
1720 1720 zfs_ioc_pool_get_history(zfs_cmd_t *zc)
1721 1721 {
1722 1722 spa_t *spa;
1723 1723 char *hist_buf;
1724 1724 uint64_t size;
1725 1725 int error;
1726 1726
1727 1727 if ((size = zc->zc_history_len) == 0)
1728 1728 return (SET_ERROR(EINVAL));
1729 1729
1730 1730 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1731 1731 return (error);
1732 1732
1733 1733 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
1734 1734 spa_close(spa, FTAG);
1735 1735 return (SET_ERROR(ENOTSUP));
1736 1736 }
1737 1737
1738 1738 hist_buf = kmem_alloc(size, KM_SLEEP);
1739 1739 if ((error = spa_history_get(spa, &zc->zc_history_offset,
1740 1740 &zc->zc_history_len, hist_buf)) == 0) {
1741 1741 error = ddi_copyout(hist_buf,
1742 1742 (void *)(uintptr_t)zc->zc_history,
1743 1743 zc->zc_history_len, zc->zc_iflags);
1744 1744 }
1745 1745
1746 1746 spa_close(spa, FTAG);
1747 1747 kmem_free(hist_buf, size);
1748 1748 return (error);
1749 1749 }
1750 1750
1751 1751 static int
1752 1752 zfs_ioc_pool_reguid(zfs_cmd_t *zc)
1753 1753 {
1754 1754 spa_t *spa;
1755 1755 int error;
1756 1756
1757 1757 error = spa_open(zc->zc_name, &spa, FTAG);
1758 1758 if (error == 0) {
1759 1759 error = spa_change_guid(spa);
1760 1760 spa_close(spa, FTAG);
1761 1761 }
1762 1762 return (error);
1763 1763 }
1764 1764
1765 1765 static int
1766 1766 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
1767 1767 {
1768 1768 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value));
1769 1769 }
1770 1770
1771 1771 /*
1772 1772 * inputs:
1773 1773 * zc_name name of filesystem
1774 1774 * zc_obj object to find
1775 1775 *
1776 1776 * outputs:
1777 1777 * zc_value name of object
1778 1778 */
1779 1779 static int
1780 1780 zfs_ioc_obj_to_path(zfs_cmd_t *zc)
1781 1781 {
1782 1782 objset_t *os;
1783 1783 int error;
1784 1784
1785 1785 /* XXX reading from objset not owned */
1786 1786 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1787 1787 return (error);
1788 1788 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1789 1789 dmu_objset_rele(os, FTAG);
1790 1790 return (SET_ERROR(EINVAL));
1791 1791 }
1792 1792 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value,
1793 1793 sizeof (zc->zc_value));
1794 1794 dmu_objset_rele(os, FTAG);
1795 1795
1796 1796 return (error);
1797 1797 }
1798 1798
1799 1799 /*
1800 1800 * inputs:
1801 1801 * zc_name name of filesystem
1802 1802 * zc_obj object to find
1803 1803 *
1804 1804 * outputs:
1805 1805 * zc_stat stats on object
1806 1806 * zc_value path to object
1807 1807 */
1808 1808 static int
1809 1809 zfs_ioc_obj_to_stats(zfs_cmd_t *zc)
1810 1810 {
1811 1811 objset_t *os;
1812 1812 int error;
1813 1813
1814 1814 /* XXX reading from objset not owned */
1815 1815 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1816 1816 return (error);
1817 1817 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1818 1818 dmu_objset_rele(os, FTAG);
1819 1819 return (SET_ERROR(EINVAL));
1820 1820 }
1821 1821 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value,
1822 1822 sizeof (zc->zc_value));
1823 1823 dmu_objset_rele(os, FTAG);
1824 1824
1825 1825 return (error);
1826 1826 }
1827 1827
1828 1828 static int
1829 1829 zfs_ioc_vdev_add(zfs_cmd_t *zc)
1830 1830 {
1831 1831 spa_t *spa;
1832 1832 int error;
1833 1833 nvlist_t *config, **l2cache, **spares;
1834 1834 uint_t nl2cache = 0, nspares = 0;
1835 1835
1836 1836 error = spa_open(zc->zc_name, &spa, FTAG);
1837 1837 if (error != 0)
1838 1838 return (error);
1839 1839
1840 1840 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1841 1841 zc->zc_iflags, &config);
1842 1842 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
1843 1843 &l2cache, &nl2cache);
1844 1844
1845 1845 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
1846 1846 &spares, &nspares);
1847 1847
1848 1848 /*
1849 1849 * A root pool with concatenated devices is not supported.
1850 1850 * Thus, can not add a device to a root pool.
1851 1851 *
1852 1852 * Intent log device can not be added to a rootpool because
1853 1853 * during mountroot, zil is replayed, a seperated log device
1854 1854 * can not be accessed during the mountroot time.
1855 1855 *
1856 1856 * l2cache and spare devices are ok to be added to a rootpool.
1857 1857 */
1858 1858 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) {
1859 1859 nvlist_free(config);
1860 1860 spa_close(spa, FTAG);
1861 1861 return (SET_ERROR(EDOM));
1862 1862 }
1863 1863
1864 1864 if (error == 0) {
1865 1865 error = spa_vdev_add(spa, config);
1866 1866 nvlist_free(config);
1867 1867 }
1868 1868 spa_close(spa, FTAG);
1869 1869 return (error);
1870 1870 }
1871 1871
1872 1872 /*
1873 1873 * inputs:
1874 1874 * zc_name name of the pool
1875 1875 * zc_nvlist_conf nvlist of devices to remove
1876 1876 * zc_cookie to stop the remove?
1877 1877 */
1878 1878 static int
1879 1879 zfs_ioc_vdev_remove(zfs_cmd_t *zc)
1880 1880 {
1881 1881 spa_t *spa;
1882 1882 int error;
1883 1883
1884 1884 error = spa_open(zc->zc_name, &spa, FTAG);
1885 1885 if (error != 0)
1886 1886 return (error);
1887 1887 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE);
1888 1888 spa_close(spa, FTAG);
1889 1889 return (error);
1890 1890 }
1891 1891
1892 1892 static int
1893 1893 zfs_ioc_vdev_set_state(zfs_cmd_t *zc)
1894 1894 {
1895 1895 spa_t *spa;
1896 1896 int error;
1897 1897 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
1898 1898
1899 1899 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1900 1900 return (error);
1901 1901 switch (zc->zc_cookie) {
1902 1902 case VDEV_STATE_ONLINE:
1903 1903 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate);
1904 1904 break;
1905 1905
1906 1906 case VDEV_STATE_OFFLINE:
1907 1907 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj);
1908 1908 break;
1909 1909
1910 1910 case VDEV_STATE_FAULTED:
1911 1911 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1912 1912 zc->zc_obj != VDEV_AUX_EXTERNAL)
1913 1913 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1914 1914
1915 1915 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj);
1916 1916 break;
1917 1917
1918 1918 case VDEV_STATE_DEGRADED:
1919 1919 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1920 1920 zc->zc_obj != VDEV_AUX_EXTERNAL)
1921 1921 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1922 1922
1923 1923 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj);
1924 1924 break;
1925 1925
1926 1926 default:
1927 1927 error = SET_ERROR(EINVAL);
1928 1928 }
1929 1929 zc->zc_cookie = newstate;
1930 1930 spa_close(spa, FTAG);
1931 1931 return (error);
1932 1932 }
1933 1933
1934 1934 static int
1935 1935 zfs_ioc_vdev_attach(zfs_cmd_t *zc)
1936 1936 {
1937 1937 spa_t *spa;
1938 1938 int replacing = zc->zc_cookie;
1939 1939 nvlist_t *config;
1940 1940 int error;
1941 1941
1942 1942 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1943 1943 return (error);
1944 1944
1945 1945 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1946 1946 zc->zc_iflags, &config)) == 0) {
1947 1947 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
1948 1948 nvlist_free(config);
1949 1949 }
1950 1950
1951 1951 spa_close(spa, FTAG);
1952 1952 return (error);
1953 1953 }
1954 1954
1955 1955 static int
1956 1956 zfs_ioc_vdev_detach(zfs_cmd_t *zc)
1957 1957 {
1958 1958 spa_t *spa;
1959 1959 int error;
1960 1960
1961 1961 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1962 1962 return (error);
1963 1963
1964 1964 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE);
1965 1965
1966 1966 spa_close(spa, FTAG);
1967 1967 return (error);
1968 1968 }
1969 1969
1970 1970 static int
1971 1971 zfs_ioc_vdev_split(zfs_cmd_t *zc)
1972 1972 {
1973 1973 spa_t *spa;
1974 1974 nvlist_t *config, *props = NULL;
1975 1975 int error;
1976 1976 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT);
1977 1977
1978 1978 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1979 1979 return (error);
1980 1980
1981 1981 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1982 1982 zc->zc_iflags, &config)) {
1983 1983 spa_close(spa, FTAG);
1984 1984 return (error);
1985 1985 }
1986 1986
1987 1987 if (zc->zc_nvlist_src_size != 0 && (error =
1988 1988 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1989 1989 zc->zc_iflags, &props))) {
1990 1990 spa_close(spa, FTAG);
1991 1991 nvlist_free(config);
1992 1992 return (error);
1993 1993 }
1994 1994
1995 1995 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp);
1996 1996
1997 1997 spa_close(spa, FTAG);
1998 1998
1999 1999 nvlist_free(config);
2000 2000 nvlist_free(props);
2001 2001
2002 2002 return (error);
2003 2003 }
2004 2004
2005 2005 static int
2006 2006 zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
2007 2007 {
2008 2008 spa_t *spa;
2009 2009 char *path = zc->zc_value;
2010 2010 uint64_t guid = zc->zc_guid;
2011 2011 int error;
2012 2012
2013 2013 error = spa_open(zc->zc_name, &spa, FTAG);
2014 2014 if (error != 0)
2015 2015 return (error);
2016 2016
2017 2017 error = spa_vdev_setpath(spa, guid, path);
2018 2018 spa_close(spa, FTAG);
2019 2019 return (error);
2020 2020 }
2021 2021
2022 2022 static int
2023 2023 zfs_ioc_vdev_setfru(zfs_cmd_t *zc)
2024 2024 {
2025 2025 spa_t *spa;
2026 2026 char *fru = zc->zc_value;
2027 2027 uint64_t guid = zc->zc_guid;
2028 2028 int error;
2029 2029
2030 2030 error = spa_open(zc->zc_name, &spa, FTAG);
2031 2031 if (error != 0)
2032 2032 return (error);
2033 2033
2034 2034 error = spa_vdev_setfru(spa, guid, fru);
2035 2035 spa_close(spa, FTAG);
2036 2036 return (error);
2037 2037 }
2038 2038
2039 2039 static int
2040 2040 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os)
2041 2041 {
2042 2042 int error = 0;
2043 2043 nvlist_t *nv;
2044 2044
2045 2045 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
2046 2046
2047 2047 if (zc->zc_nvlist_dst != 0 &&
2048 2048 (error = dsl_prop_get_all(os, &nv)) == 0) {
2049 2049 dmu_objset_stats(os, nv);
2050 2050 /*
2051 2051 * NB: zvol_get_stats() will read the objset contents,
2052 2052 * which we aren't supposed to do with a
2053 2053 * DS_MODE_USER hold, because it could be
2054 2054 * inconsistent. So this is a bit of a workaround...
2055 2055 * XXX reading with out owning
2056 2056 */
2057 2057 if (!zc->zc_objset_stats.dds_inconsistent &&
2058 2058 dmu_objset_type(os) == DMU_OST_ZVOL) {
2059 2059 error = zvol_get_stats(os, nv);
2060 2060 if (error == EIO)
2061 2061 return (error);
2062 2062 VERIFY0(error);
2063 2063 }
2064 2064 error = put_nvlist(zc, nv);
2065 2065 nvlist_free(nv);
2066 2066 }
2067 2067
2068 2068 return (error);
2069 2069 }
2070 2070
2071 2071 /*
2072 2072 * inputs:
2073 2073 * zc_name name of filesystem
2074 2074 * zc_nvlist_dst_size size of buffer for property nvlist
2075 2075 *
2076 2076 * outputs:
2077 2077 * zc_objset_stats stats
2078 2078 * zc_nvlist_dst property nvlist
2079 2079 * zc_nvlist_dst_size size of property nvlist
2080 2080 */
2081 2081 static int
2082 2082 zfs_ioc_objset_stats(zfs_cmd_t *zc)
2083 2083 {
2084 2084 objset_t *os;
2085 2085 int error;
2086 2086
2087 2087 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
2088 2088 if (error == 0) {
2089 2089 error = zfs_ioc_objset_stats_impl(zc, os);
2090 2090 dmu_objset_rele(os, FTAG);
2091 2091 }
2092 2092
2093 2093 return (error);
2094 2094 }
2095 2095
2096 2096 /*
2097 2097 * inputs:
2098 2098 * zc_name name of filesystem
2099 2099 * zc_nvlist_dst_size size of buffer for property nvlist
2100 2100 *
2101 2101 * outputs:
2102 2102 * zc_nvlist_dst received property nvlist
2103 2103 * zc_nvlist_dst_size size of received property nvlist
2104 2104 *
2105 2105 * Gets received properties (distinct from local properties on or after
2106 2106 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from
2107 2107 * local property values.
2108 2108 */
2109 2109 static int
2110 2110 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc)
2111 2111 {
2112 2112 int error = 0;
2113 2113 nvlist_t *nv;
2114 2114
2115 2115 /*
2116 2116 * Without this check, we would return local property values if the
2117 2117 * caller has not already received properties on or after
2118 2118 * SPA_VERSION_RECVD_PROPS.
2119 2119 */
2120 2120 if (!dsl_prop_get_hasrecvd(zc->zc_name))
2121 2121 return (SET_ERROR(ENOTSUP));
2122 2122
2123 2123 if (zc->zc_nvlist_dst != 0 &&
2124 2124 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) {
2125 2125 error = put_nvlist(zc, nv);
2126 2126 nvlist_free(nv);
2127 2127 }
2128 2128
2129 2129 return (error);
2130 2130 }
2131 2131
2132 2132 static int
2133 2133 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop)
2134 2134 {
2135 2135 uint64_t value;
2136 2136 int error;
2137 2137
2138 2138 /*
2139 2139 * zfs_get_zplprop() will either find a value or give us
2140 2140 * the default value (if there is one).
2141 2141 */
2142 2142 if ((error = zfs_get_zplprop(os, prop, &value)) != 0)
2143 2143 return (error);
2144 2144 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0);
2145 2145 return (0);
2146 2146 }
2147 2147
2148 2148 /*
2149 2149 * inputs:
2150 2150 * zc_name name of filesystem
2151 2151 * zc_nvlist_dst_size size of buffer for zpl property nvlist
2152 2152 *
2153 2153 * outputs:
2154 2154 * zc_nvlist_dst zpl property nvlist
2155 2155 * zc_nvlist_dst_size size of zpl property nvlist
2156 2156 */
2157 2157 static int
2158 2158 zfs_ioc_objset_zplprops(zfs_cmd_t *zc)
2159 2159 {
2160 2160 objset_t *os;
2161 2161 int err;
2162 2162
2163 2163 /* XXX reading without owning */
2164 2164 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os))
2165 2165 return (err);
2166 2166
2167 2167 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
2168 2168
2169 2169 /*
2170 2170 * NB: nvl_add_zplprop() will read the objset contents,
2171 2171 * which we aren't supposed to do with a DS_MODE_USER
2172 2172 * hold, because it could be inconsistent.
2173 2173 */
2174 2174 if (zc->zc_nvlist_dst != NULL &&
2175 2175 !zc->zc_objset_stats.dds_inconsistent &&
2176 2176 dmu_objset_type(os) == DMU_OST_ZFS) {
2177 2177 nvlist_t *nv;
2178 2178
2179 2179 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2180 2180 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 &&
2181 2181 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 &&
2182 2182 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 &&
2183 2183 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0)
2184 2184 err = put_nvlist(zc, nv);
2185 2185 nvlist_free(nv);
2186 2186 } else {
2187 2187 err = SET_ERROR(ENOENT);
2188 2188 }
2189 2189 dmu_objset_rele(os, FTAG);
2190 2190 return (err);
2191 2191 }
2192 2192
2193 2193 static boolean_t
2194 2194 dataset_name_hidden(const char *name)
2195 2195 {
2196 2196 /*
2197 2197 * Skip over datasets that are not visible in this zone,
2198 2198 * internal datasets (which have a $ in their name), and
2199 2199 * temporary datasets (which have a % in their name).
2200 2200 */
2201 2201 if (strchr(name, '$') != NULL)
2202 2202 return (B_TRUE);
2203 2203 if (strchr(name, '%') != NULL)
2204 2204 return (B_TRUE);
2205 2205 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL))
2206 2206 return (B_TRUE);
2207 2207 return (B_FALSE);
2208 2208 }
2209 2209
2210 2210 /*
2211 2211 * inputs:
2212 2212 * zc_name name of filesystem
2213 2213 * zc_cookie zap cursor
2214 2214 * zc_nvlist_dst_size size of buffer for property nvlist
2215 2215 *
2216 2216 * outputs:
2217 2217 * zc_name name of next filesystem
2218 2218 * zc_cookie zap cursor
2219 2219 * zc_objset_stats stats
2220 2220 * zc_nvlist_dst property nvlist
2221 2221 * zc_nvlist_dst_size size of property nvlist
2222 2222 */
2223 2223 static int
2224 2224 zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
2225 2225 {
2226 2226 objset_t *os;
2227 2227 int error;
2228 2228 char *p;
2229 2229 size_t orig_len = strlen(zc->zc_name);
2230 2230
2231 2231 top:
2232 2232 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) {
2233 2233 if (error == ENOENT)
2234 2234 error = SET_ERROR(ESRCH);
2235 2235 return (error);
2236 2236 }
2237 2237
2238 2238 p = strrchr(zc->zc_name, '/');
2239 2239 if (p == NULL || p[1] != '\0')
2240 2240 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
2241 2241 p = zc->zc_name + strlen(zc->zc_name);
2242 2242
2243 2243 do {
2244 2244 error = dmu_dir_list_next(os,
2245 2245 sizeof (zc->zc_name) - (p - zc->zc_name), p,
2246 2246 NULL, &zc->zc_cookie);
2247 2247 if (error == ENOENT)
2248 2248 error = SET_ERROR(ESRCH);
2249 2249 } while (error == 0 && dataset_name_hidden(zc->zc_name));
2250 2250 dmu_objset_rele(os, FTAG);
2251 2251
2252 2252 /*
2253 2253 * If it's an internal dataset (ie. with a '$' in its name),
2254 2254 * don't try to get stats for it, otherwise we'll return ENOENT.
2255 2255 */
2256 2256 if (error == 0 && strchr(zc->zc_name, '$') == NULL) {
2257 2257 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
2258 2258 if (error == ENOENT) {
2259 2259 /* We lost a race with destroy, get the next one. */
2260 2260 zc->zc_name[orig_len] = '\0';
2261 2261 goto top;
2262 2262 }
2263 2263 }
2264 2264 return (error);
2265 2265 }
2266 2266
2267 2267 /*
2268 2268 * inputs:
2269 2269 * zc_name name of filesystem
2270 2270 * zc_cookie zap cursor
2271 2271 * zc_nvlist_dst_size size of buffer for property nvlist
2272 2272 * zc_simple when set, only name is requested
2273 2273 *
2274 2274 * outputs:
2275 2275 * zc_name name of next snapshot
2276 2276 * zc_objset_stats stats
2277 2277 * zc_nvlist_dst property nvlist
2278 2278 * zc_nvlist_dst_size size of property nvlist
2279 2279 */
2280 2280 static int
2281 2281 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc)
2282 2282 {
2283 2283 objset_t *os;
2284 2284 int error;
2285 2285
2286 2286 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
2287 2287 if (error != 0) {
2288 2288 return (error == ENOENT ? ESRCH : error);
2289 2289 }
2290 2290
2291 2291 /*
2292 2292 * A dataset name of maximum length cannot have any snapshots,
2293 2293 * so exit immediately.
2294 2294 */
2295 2295 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >=
2296 2296 ZFS_MAX_DATASET_NAME_LEN) {
2297 2297 dmu_objset_rele(os, FTAG);
2298 2298 return (SET_ERROR(ESRCH));
2299 2299 }
2300 2300
2301 2301 error = dmu_snapshot_list_next(os,
2302 2302 sizeof (zc->zc_name) - strlen(zc->zc_name),
2303 2303 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie,
2304 2304 NULL);
2305 2305
2306 2306 if (error == 0 && !zc->zc_simple) {
2307 2307 dsl_dataset_t *ds;
2308 2308 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool;
2309 2309
2310 2310 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds);
2311 2311 if (error == 0) {
2312 2312 objset_t *ossnap;
2313 2313
2314 2314 error = dmu_objset_from_ds(ds, &ossnap);
2315 2315 if (error == 0)
2316 2316 error = zfs_ioc_objset_stats_impl(zc, ossnap);
2317 2317 dsl_dataset_rele(ds, FTAG);
2318 2318 }
2319 2319 } else if (error == ENOENT) {
2320 2320 error = SET_ERROR(ESRCH);
2321 2321 }
2322 2322
2323 2323 dmu_objset_rele(os, FTAG);
2324 2324 /* if we failed, undo the @ that we tacked on to zc_name */
2325 2325 if (error != 0)
2326 2326 *strchr(zc->zc_name, '@') = '\0';
2327 2327 return (error);
2328 2328 }
2329 2329
2330 2330 static int
2331 2331 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair)
2332 2332 {
2333 2333 const char *propname = nvpair_name(pair);
2334 2334 uint64_t *valary;
2335 2335 unsigned int vallen;
2336 2336 const char *domain;
2337 2337 char *dash;
2338 2338 zfs_userquota_prop_t type;
2339 2339 uint64_t rid;
2340 2340 uint64_t quota;
2341 2341 zfsvfs_t *zfsvfs;
2342 2342 int err;
2343 2343
2344 2344 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2345 2345 nvlist_t *attrs;
2346 2346 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2347 2347 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2348 2348 &pair) != 0)
2349 2349 return (SET_ERROR(EINVAL));
2350 2350 }
2351 2351
2352 2352 /*
2353 2353 * A correctly constructed propname is encoded as
2354 2354 * userquota@<rid>-<domain>.
2355 2355 */
2356 2356 if ((dash = strchr(propname, '-')) == NULL ||
2357 2357 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 ||
2358 2358 vallen != 3)
2359 2359 return (SET_ERROR(EINVAL));
2360 2360
2361 2361 domain = dash + 1;
2362 2362 type = valary[0];
2363 2363 rid = valary[1];
2364 2364 quota = valary[2];
2365 2365
2366 2366 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE);
2367 2367 if (err == 0) {
2368 2368 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota);
2369 2369 zfsvfs_rele(zfsvfs, FTAG);
2370 2370 }
2371 2371
2372 2372 return (err);
2373 2373 }
2374 2374
2375 2375 /*
2376 2376 * If the named property is one that has a special function to set its value,
2377 2377 * return 0 on success and a positive error code on failure; otherwise if it is
2378 2378 * not one of the special properties handled by this function, return -1.
2379 2379 *
2380 2380 * XXX: It would be better for callers of the property interface if we handled
2381 2381 * these special cases in dsl_prop.c (in the dsl layer).
2382 2382 */
2383 2383 static int
2384 2384 zfs_prop_set_special(const char *dsname, zprop_source_t source,
2385 2385 nvpair_t *pair)
2386 2386 {
2387 2387 const char *propname = nvpair_name(pair);
2388 2388 zfs_prop_t prop = zfs_name_to_prop(propname);
2389 2389 uint64_t intval;
2390 2390 int err = -1;
2391 2391
2392 2392 if (prop == ZPROP_INVAL) {
2393 2393 if (zfs_prop_userquota(propname))
2394 2394 return (zfs_prop_set_userquota(dsname, pair));
2395 2395 return (-1);
2396 2396 }
2397 2397
2398 2398 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2399 2399 nvlist_t *attrs;
2400 2400 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2401 2401 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2402 2402 &pair) == 0);
2403 2403 }
2404 2404
2405 2405 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING)
2406 2406 return (-1);
2407 2407
2408 2408 VERIFY(0 == nvpair_value_uint64(pair, &intval));
2409 2409
2410 2410 switch (prop) {
2411 2411 case ZFS_PROP_QUOTA:
2412 2412 err = dsl_dir_set_quota(dsname, source, intval);
2413 2413 break;
2414 2414 case ZFS_PROP_REFQUOTA:
2415 2415 err = dsl_dataset_set_refquota(dsname, source, intval);
2416 2416 break;
2417 2417 case ZFS_PROP_FILESYSTEM_LIMIT:
2418 2418 case ZFS_PROP_SNAPSHOT_LIMIT:
2419 2419 if (intval == UINT64_MAX) {
2420 2420 /* clearing the limit, just do it */
2421 2421 err = 0;
2422 2422 } else {
2423 2423 err = dsl_dir_activate_fs_ss_limit(dsname);
2424 2424 }
2425 2425 /*
2426 2426 * Set err to -1 to force the zfs_set_prop_nvlist code down the
2427 2427 * default path to set the value in the nvlist.
2428 2428 */
2429 2429 if (err == 0)
2430 2430 err = -1;
2431 2431 break;
2432 2432 case ZFS_PROP_RESERVATION:
2433 2433 err = dsl_dir_set_reservation(dsname, source, intval);
2434 2434 break;
2435 2435 case ZFS_PROP_REFRESERVATION:
2436 2436 err = dsl_dataset_set_refreservation(dsname, source, intval);
2437 2437 break;
2438 2438 case ZFS_PROP_VOLSIZE:
2439 2439 err = zvol_set_volsize(dsname, intval);
2440 2440 break;
2441 2441 case ZFS_PROP_VERSION:
2442 2442 {
2443 2443 zfsvfs_t *zfsvfs;
2444 2444
2445 2445 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0)
2446 2446 break;
2447 2447
2448 2448 err = zfs_set_version(zfsvfs, intval);
2449 2449 zfsvfs_rele(zfsvfs, FTAG);
2450 2450
2451 2451 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) {
2452 2452 zfs_cmd_t *zc;
2453 2453
2454 2454 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
2455 2455 (void) strcpy(zc->zc_name, dsname);
2456 2456 (void) zfs_ioc_userspace_upgrade(zc);
2457 2457 kmem_free(zc, sizeof (zfs_cmd_t));
2458 2458 }
2459 2459 break;
2460 2460 }
2461 2461 default:
2462 2462 err = -1;
2463 2463 }
2464 2464
2465 2465 return (err);
2466 2466 }
2467 2467
2468 2468 /*
2469 2469 * This function is best effort. If it fails to set any of the given properties,
2470 2470 * it continues to set as many as it can and returns the last error
2471 2471 * encountered. If the caller provides a non-NULL errlist, it will be filled in
2472 2472 * with the list of names of all the properties that failed along with the
2473 2473 * corresponding error numbers.
2474 2474 *
2475 2475 * If every property is set successfully, zero is returned and errlist is not
2476 2476 * modified.
2477 2477 */
2478 2478 int
2479 2479 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl,
2480 2480 nvlist_t *errlist)
2481 2481 {
2482 2482 nvpair_t *pair;
2483 2483 nvpair_t *propval;
2484 2484 int rv = 0;
2485 2485 uint64_t intval;
2486 2486 char *strval;
2487 2487 nvlist_t *genericnvl = fnvlist_alloc();
2488 2488 nvlist_t *retrynvl = fnvlist_alloc();
2489 2489
2490 2490 retry:
2491 2491 pair = NULL;
2492 2492 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2493 2493 const char *propname = nvpair_name(pair);
2494 2494 zfs_prop_t prop = zfs_name_to_prop(propname);
2495 2495 int err = 0;
2496 2496
2497 2497 /* decode the property value */
2498 2498 propval = pair;
2499 2499 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2500 2500 nvlist_t *attrs;
2501 2501 attrs = fnvpair_value_nvlist(pair);
2502 2502 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2503 2503 &propval) != 0)
2504 2504 err = SET_ERROR(EINVAL);
2505 2505 }
2506 2506
2507 2507 /* Validate value type */
2508 2508 if (err == 0 && prop == ZPROP_INVAL) {
2509 2509 if (zfs_prop_user(propname)) {
2510 2510 if (nvpair_type(propval) != DATA_TYPE_STRING)
2511 2511 err = SET_ERROR(EINVAL);
2512 2512 } else if (zfs_prop_userquota(propname)) {
2513 2513 if (nvpair_type(propval) !=
2514 2514 DATA_TYPE_UINT64_ARRAY)
2515 2515 err = SET_ERROR(EINVAL);
2516 2516 } else {
2517 2517 err = SET_ERROR(EINVAL);
2518 2518 }
2519 2519 } else if (err == 0) {
2520 2520 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2521 2521 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING)
2522 2522 err = SET_ERROR(EINVAL);
2523 2523 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) {
2524 2524 const char *unused;
2525 2525
2526 2526 intval = fnvpair_value_uint64(propval);
2527 2527
2528 2528 switch (zfs_prop_get_type(prop)) {
2529 2529 case PROP_TYPE_NUMBER:
2530 2530 break;
2531 2531 case PROP_TYPE_STRING:
2532 2532 err = SET_ERROR(EINVAL);
2533 2533 break;
2534 2534 case PROP_TYPE_INDEX:
2535 2535 if (zfs_prop_index_to_string(prop,
2536 2536 intval, &unused) != 0)
2537 2537 err = SET_ERROR(EINVAL);
2538 2538 break;
2539 2539 default:
2540 2540 cmn_err(CE_PANIC,
2541 2541 "unknown property type");
2542 2542 }
2543 2543 } else {
2544 2544 err = SET_ERROR(EINVAL);
2545 2545 }
2546 2546 }
2547 2547
2548 2548 /* Validate permissions */
2549 2549 if (err == 0)
2550 2550 err = zfs_check_settable(dsname, pair, CRED());
2551 2551
2552 2552 if (err == 0) {
2553 2553 err = zfs_prop_set_special(dsname, source, pair);
2554 2554 if (err == -1) {
2555 2555 /*
2556 2556 * For better performance we build up a list of
2557 2557 * properties to set in a single transaction.
2558 2558 */
2559 2559 err = nvlist_add_nvpair(genericnvl, pair);
2560 2560 } else if (err != 0 && nvl != retrynvl) {
2561 2561 /*
2562 2562 * This may be a spurious error caused by
2563 2563 * receiving quota and reservation out of order.
2564 2564 * Try again in a second pass.
2565 2565 */
2566 2566 err = nvlist_add_nvpair(retrynvl, pair);
2567 2567 }
2568 2568 }
2569 2569
2570 2570 if (err != 0) {
2571 2571 if (errlist != NULL)
2572 2572 fnvlist_add_int32(errlist, propname, err);
2573 2573 rv = err;
2574 2574 }
2575 2575 }
2576 2576
2577 2577 if (nvl != retrynvl && !nvlist_empty(retrynvl)) {
2578 2578 nvl = retrynvl;
2579 2579 goto retry;
2580 2580 }
2581 2581
2582 2582 if (!nvlist_empty(genericnvl) &&
2583 2583 dsl_props_set(dsname, source, genericnvl) != 0) {
2584 2584 /*
2585 2585 * If this fails, we still want to set as many properties as we
2586 2586 * can, so try setting them individually.
2587 2587 */
2588 2588 pair = NULL;
2589 2589 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) {
2590 2590 const char *propname = nvpair_name(pair);
2591 2591 int err = 0;
2592 2592
2593 2593 propval = pair;
2594 2594 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2595 2595 nvlist_t *attrs;
2596 2596 attrs = fnvpair_value_nvlist(pair);
2597 2597 propval = fnvlist_lookup_nvpair(attrs,
2598 2598 ZPROP_VALUE);
2599 2599 }
2600 2600
2601 2601 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2602 2602 strval = fnvpair_value_string(propval);
2603 2603 err = dsl_prop_set_string(dsname, propname,
2604 2604 source, strval);
2605 2605 } else {
2606 2606 intval = fnvpair_value_uint64(propval);
2607 2607 err = dsl_prop_set_int(dsname, propname, source,
2608 2608 intval);
2609 2609 }
2610 2610
2611 2611 if (err != 0) {
2612 2612 if (errlist != NULL) {
2613 2613 fnvlist_add_int32(errlist, propname,
2614 2614 err);
2615 2615 }
2616 2616 rv = err;
2617 2617 }
2618 2618 }
2619 2619 }
2620 2620 nvlist_free(genericnvl);
2621 2621 nvlist_free(retrynvl);
2622 2622
2623 2623 return (rv);
2624 2624 }
2625 2625
2626 2626 /*
2627 2627 * Check that all the properties are valid user properties.
2628 2628 */
2629 2629 static int
2630 2630 zfs_check_userprops(const char *fsname, nvlist_t *nvl)
2631 2631 {
2632 2632 nvpair_t *pair = NULL;
2633 2633 int error = 0;
2634 2634
2635 2635 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2636 2636 const char *propname = nvpair_name(pair);
2637 2637
2638 2638 if (!zfs_prop_user(propname) ||
2639 2639 nvpair_type(pair) != DATA_TYPE_STRING)
2640 2640 return (SET_ERROR(EINVAL));
2641 2641
2642 2642 if (error = zfs_secpolicy_write_perms(fsname,
2643 2643 ZFS_DELEG_PERM_USERPROP, CRED()))
2644 2644 return (error);
2645 2645
2646 2646 if (strlen(propname) >= ZAP_MAXNAMELEN)
2647 2647 return (SET_ERROR(ENAMETOOLONG));
2648 2648
2649 2649 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN)
2650 2650 return (E2BIG);
2651 2651 }
2652 2652 return (0);
2653 2653 }
2654 2654
2655 2655 static void
2656 2656 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops)
2657 2657 {
2658 2658 nvpair_t *pair;
2659 2659
2660 2660 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2661 2661
2662 2662 pair = NULL;
2663 2663 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) {
2664 2664 if (nvlist_exists(skipped, nvpair_name(pair)))
2665 2665 continue;
2666 2666
2667 2667 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0);
2668 2668 }
2669 2669 }
2670 2670
2671 2671 static int
2672 2672 clear_received_props(const char *dsname, nvlist_t *props,
2673 2673 nvlist_t *skipped)
2674 2674 {
2675 2675 int err = 0;
2676 2676 nvlist_t *cleared_props = NULL;
2677 2677 props_skip(props, skipped, &cleared_props);
2678 2678 if (!nvlist_empty(cleared_props)) {
2679 2679 /*
2680 2680 * Acts on local properties until the dataset has received
2681 2681 * properties at least once on or after SPA_VERSION_RECVD_PROPS.
2682 2682 */
2683 2683 zprop_source_t flags = (ZPROP_SRC_NONE |
2684 2684 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0));
2685 2685 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL);
2686 2686 }
2687 2687 nvlist_free(cleared_props);
2688 2688 return (err);
2689 2689 }
2690 2690
2691 2691 /*
2692 2692 * inputs:
2693 2693 * zc_name name of filesystem
2694 2694 * zc_value name of property to set
2695 2695 * zc_nvlist_src{_size} nvlist of properties to apply
2696 2696 * zc_cookie received properties flag
2697 2697 *
2698 2698 * outputs:
2699 2699 * zc_nvlist_dst{_size} error for each unapplied received property
2700 2700 */
2701 2701 static int
2702 2702 zfs_ioc_set_prop(zfs_cmd_t *zc)
2703 2703 {
2704 2704 nvlist_t *nvl;
2705 2705 boolean_t received = zc->zc_cookie;
2706 2706 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED :
2707 2707 ZPROP_SRC_LOCAL);
2708 2708 nvlist_t *errors;
2709 2709 int error;
2710 2710
2711 2711 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2712 2712 zc->zc_iflags, &nvl)) != 0)
2713 2713 return (error);
2714 2714
2715 2715 if (received) {
2716 2716 nvlist_t *origprops;
2717 2717
2718 2718 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) {
2719 2719 (void) clear_received_props(zc->zc_name,
2720 2720 origprops, nvl);
2721 2721 nvlist_free(origprops);
2722 2722 }
2723 2723
2724 2724 error = dsl_prop_set_hasrecvd(zc->zc_name);
2725 2725 }
2726 2726
2727 2727 errors = fnvlist_alloc();
2728 2728 if (error == 0)
2729 2729 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors);
2730 2730
2731 2731 if (zc->zc_nvlist_dst != NULL && errors != NULL) {
2732 2732 (void) put_nvlist(zc, errors);
2733 2733 }
2734 2734
2735 2735 nvlist_free(errors);
2736 2736 nvlist_free(nvl);
2737 2737 return (error);
2738 2738 }
2739 2739
2740 2740 /*
2741 2741 * inputs:
2742 2742 * zc_name name of filesystem
2743 2743 * zc_value name of property to inherit
2744 2744 * zc_cookie revert to received value if TRUE
2745 2745 *
2746 2746 * outputs: none
2747 2747 */
2748 2748 static int
2749 2749 zfs_ioc_inherit_prop(zfs_cmd_t *zc)
2750 2750 {
2751 2751 const char *propname = zc->zc_value;
2752 2752 zfs_prop_t prop = zfs_name_to_prop(propname);
2753 2753 boolean_t received = zc->zc_cookie;
2754 2754 zprop_source_t source = (received
2755 2755 ? ZPROP_SRC_NONE /* revert to received value, if any */
2756 2756 : ZPROP_SRC_INHERITED); /* explicitly inherit */
2757 2757
2758 2758 if (received) {
2759 2759 nvlist_t *dummy;
2760 2760 nvpair_t *pair;
2761 2761 zprop_type_t type;
2762 2762 int err;
2763 2763
2764 2764 /*
2765 2765 * zfs_prop_set_special() expects properties in the form of an
2766 2766 * nvpair with type info.
2767 2767 */
2768 2768 if (prop == ZPROP_INVAL) {
2769 2769 if (!zfs_prop_user(propname))
2770 2770 return (SET_ERROR(EINVAL));
2771 2771
2772 2772 type = PROP_TYPE_STRING;
2773 2773 } else if (prop == ZFS_PROP_VOLSIZE ||
2774 2774 prop == ZFS_PROP_VERSION) {
2775 2775 return (SET_ERROR(EINVAL));
2776 2776 } else {
2777 2777 type = zfs_prop_get_type(prop);
2778 2778 }
2779 2779
2780 2780 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2781 2781
2782 2782 switch (type) {
2783 2783 case PROP_TYPE_STRING:
2784 2784 VERIFY(0 == nvlist_add_string(dummy, propname, ""));
2785 2785 break;
2786 2786 case PROP_TYPE_NUMBER:
2787 2787 case PROP_TYPE_INDEX:
2788 2788 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0));
2789 2789 break;
2790 2790 default:
2791 2791 nvlist_free(dummy);
2792 2792 return (SET_ERROR(EINVAL));
2793 2793 }
2794 2794
2795 2795 pair = nvlist_next_nvpair(dummy, NULL);
2796 2796 err = zfs_prop_set_special(zc->zc_name, source, pair);
2797 2797 nvlist_free(dummy);
2798 2798 if (err != -1)
2799 2799 return (err); /* special property already handled */
2800 2800 } else {
2801 2801 /*
2802 2802 * Only check this in the non-received case. We want to allow
2803 2803 * 'inherit -S' to revert non-inheritable properties like quota
2804 2804 * and reservation to the received or default values even though
2805 2805 * they are not considered inheritable.
2806 2806 */
2807 2807 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop))
2808 2808 return (SET_ERROR(EINVAL));
2809 2809 }
2810 2810
2811 2811 /* property name has been validated by zfs_secpolicy_inherit_prop() */
2812 2812 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source));
2813 2813 }
2814 2814
2815 2815 static int
2816 2816 zfs_ioc_pool_set_props(zfs_cmd_t *zc)
2817 2817 {
2818 2818 nvlist_t *props;
2819 2819 spa_t *spa;
2820 2820 int error;
2821 2821 nvpair_t *pair;
2822 2822
2823 2823 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2824 2824 zc->zc_iflags, &props))
2825 2825 return (error);
2826 2826
2827 2827 /*
2828 2828 * If the only property is the configfile, then just do a spa_lookup()
2829 2829 * to handle the faulted case.
2830 2830 */
2831 2831 pair = nvlist_next_nvpair(props, NULL);
2832 2832 if (pair != NULL && strcmp(nvpair_name(pair),
2833 2833 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 &&
2834 2834 nvlist_next_nvpair(props, pair) == NULL) {
2835 2835 mutex_enter(&spa_namespace_lock);
2836 2836 if ((spa = spa_lookup(zc->zc_name)) != NULL) {
2837 2837 spa_configfile_set(spa, props, B_FALSE);
2838 2838 spa_config_sync(spa, B_FALSE, B_TRUE);
2839 2839 }
2840 2840 mutex_exit(&spa_namespace_lock);
2841 2841 if (spa != NULL) {
2842 2842 nvlist_free(props);
2843 2843 return (0);
2844 2844 }
2845 2845 }
2846 2846
2847 2847 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2848 2848 nvlist_free(props);
2849 2849 return (error);
2850 2850 }
2851 2851
2852 2852 error = spa_prop_set(spa, props);
2853 2853
2854 2854 nvlist_free(props);
2855 2855 spa_close(spa, FTAG);
2856 2856
2857 2857 return (error);
2858 2858 }
2859 2859
2860 2860 static int
2861 2861 zfs_ioc_pool_get_props(zfs_cmd_t *zc)
2862 2862 {
2863 2863 spa_t *spa;
2864 2864 int error;
2865 2865 nvlist_t *nvp = NULL;
2866 2866
2867 2867 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2868 2868 /*
2869 2869 * If the pool is faulted, there may be properties we can still
2870 2870 * get (such as altroot and cachefile), so attempt to get them
2871 2871 * anyway.
2872 2872 */
2873 2873 mutex_enter(&spa_namespace_lock);
2874 2874 if ((spa = spa_lookup(zc->zc_name)) != NULL)
2875 2875 error = spa_prop_get(spa, &nvp);
2876 2876 mutex_exit(&spa_namespace_lock);
2877 2877 } else {
2878 2878 error = spa_prop_get(spa, &nvp);
2879 2879 spa_close(spa, FTAG);
2880 2880 }
2881 2881
2882 2882 if (error == 0 && zc->zc_nvlist_dst != NULL)
2883 2883 error = put_nvlist(zc, nvp);
2884 2884 else
2885 2885 error = SET_ERROR(EFAULT);
2886 2886
2887 2887 nvlist_free(nvp);
2888 2888 return (error);
2889 2889 }
2890 2890
2891 2891 /*
2892 2892 * inputs:
2893 2893 * zc_name name of filesystem
2894 2894 * zc_nvlist_src{_size} nvlist of delegated permissions
2895 2895 * zc_perm_action allow/unallow flag
2896 2896 *
2897 2897 * outputs: none
2898 2898 */
2899 2899 static int
2900 2900 zfs_ioc_set_fsacl(zfs_cmd_t *zc)
2901 2901 {
2902 2902 int error;
2903 2903 nvlist_t *fsaclnv = NULL;
2904 2904
2905 2905 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2906 2906 zc->zc_iflags, &fsaclnv)) != 0)
2907 2907 return (error);
2908 2908
2909 2909 /*
2910 2910 * Verify nvlist is constructed correctly
2911 2911 */
2912 2912 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
2913 2913 nvlist_free(fsaclnv);
2914 2914 return (SET_ERROR(EINVAL));
2915 2915 }
2916 2916
2917 2917 /*
2918 2918 * If we don't have PRIV_SYS_MOUNT, then validate
2919 2919 * that user is allowed to hand out each permission in
2920 2920 * the nvlist(s)
2921 2921 */
2922 2922
2923 2923 error = secpolicy_zfs(CRED());
2924 2924 if (error != 0) {
2925 2925 if (zc->zc_perm_action == B_FALSE) {
2926 2926 error = dsl_deleg_can_allow(zc->zc_name,
2927 2927 fsaclnv, CRED());
2928 2928 } else {
2929 2929 error = dsl_deleg_can_unallow(zc->zc_name,
2930 2930 fsaclnv, CRED());
2931 2931 }
2932 2932 }
2933 2933
2934 2934 if (error == 0)
2935 2935 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action);
2936 2936
2937 2937 nvlist_free(fsaclnv);
2938 2938 return (error);
2939 2939 }
2940 2940
2941 2941 /*
2942 2942 * inputs:
2943 2943 * zc_name name of filesystem
2944 2944 *
2945 2945 * outputs:
2946 2946 * zc_nvlist_src{_size} nvlist of delegated permissions
2947 2947 */
2948 2948 static int
2949 2949 zfs_ioc_get_fsacl(zfs_cmd_t *zc)
2950 2950 {
2951 2951 nvlist_t *nvp;
2952 2952 int error;
2953 2953
2954 2954 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) {
2955 2955 error = put_nvlist(zc, nvp);
2956 2956 nvlist_free(nvp);
2957 2957 }
2958 2958
2959 2959 return (error);
2960 2960 }
2961 2961
2962 2962 /*
2963 2963 * Search the vfs list for a specified resource. Returns a pointer to it
2964 2964 * or NULL if no suitable entry is found. The caller of this routine
2965 2965 * is responsible for releasing the returned vfs pointer.
2966 2966 */
2967 2967 static vfs_t *
2968 2968 zfs_get_vfs(const char *resource)
2969 2969 {
2970 2970 struct vfs *vfsp;
2971 2971 struct vfs *vfs_found = NULL;
2972 2972
2973 2973 vfs_list_read_lock();
2974 2974 vfsp = rootvfs;
2975 2975 do {
2976 2976 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) {
2977 2977 VFS_HOLD(vfsp);
2978 2978 vfs_found = vfsp;
2979 2979 break;
2980 2980 }
2981 2981 vfsp = vfsp->vfs_next;
2982 2982 } while (vfsp != rootvfs);
2983 2983 vfs_list_unlock();
2984 2984 return (vfs_found);
2985 2985 }
2986 2986
2987 2987 /* ARGSUSED */
2988 2988 static void
2989 2989 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
2990 2990 {
2991 2991 zfs_creat_t *zct = arg;
2992 2992
2993 2993 zfs_create_fs(os, cr, zct->zct_zplprops, tx);
2994 2994 }
2995 2995
2996 2996 #define ZFS_PROP_UNDEFINED ((uint64_t)-1)
2997 2997
2998 2998 /*
2999 2999 * inputs:
3000 3000 * os parent objset pointer (NULL if root fs)
3001 3001 * fuids_ok fuids allowed in this version of the spa?
3002 3002 * sa_ok SAs allowed in this version of the spa?
3003 3003 * createprops list of properties requested by creator
3004 3004 *
3005 3005 * outputs:
3006 3006 * zplprops values for the zplprops we attach to the master node object
3007 3007 * is_ci true if requested file system will be purely case-insensitive
3008 3008 *
3009 3009 * Determine the settings for utf8only, normalization and
3010 3010 * casesensitivity. Specific values may have been requested by the
3011 3011 * creator and/or we can inherit values from the parent dataset. If
3012 3012 * the file system is of too early a vintage, a creator can not
3013 3013 * request settings for these properties, even if the requested
3014 3014 * setting is the default value. We don't actually want to create dsl
3015 3015 * properties for these, so remove them from the source nvlist after
3016 3016 * processing.
3017 3017 */
3018 3018 static int
3019 3019 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver,
3020 3020 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops,
3021 3021 nvlist_t *zplprops, boolean_t *is_ci)
3022 3022 {
3023 3023 uint64_t sense = ZFS_PROP_UNDEFINED;
3024 3024 uint64_t norm = ZFS_PROP_UNDEFINED;
3025 3025 uint64_t u8 = ZFS_PROP_UNDEFINED;
3026 3026
3027 3027 ASSERT(zplprops != NULL);
3028 3028
3029 3029 /*
3030 3030 * Pull out creator prop choices, if any.
3031 3031 */
3032 3032 if (createprops) {
3033 3033 (void) nvlist_lookup_uint64(createprops,
3034 3034 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver);
3035 3035 (void) nvlist_lookup_uint64(createprops,
3036 3036 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm);
3037 3037 (void) nvlist_remove_all(createprops,
3038 3038 zfs_prop_to_name(ZFS_PROP_NORMALIZE));
3039 3039 (void) nvlist_lookup_uint64(createprops,
3040 3040 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8);
3041 3041 (void) nvlist_remove_all(createprops,
3042 3042 zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
3043 3043 (void) nvlist_lookup_uint64(createprops,
3044 3044 zfs_prop_to_name(ZFS_PROP_CASE), &sense);
3045 3045 (void) nvlist_remove_all(createprops,
3046 3046 zfs_prop_to_name(ZFS_PROP_CASE));
3047 3047 }
3048 3048
3049 3049 /*
3050 3050 * If the zpl version requested is whacky or the file system
3051 3051 * or pool is version is too "young" to support normalization
3052 3052 * and the creator tried to set a value for one of the props,
3053 3053 * error out.
3054 3054 */
3055 3055 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) ||
3056 3056 (zplver >= ZPL_VERSION_FUID && !fuids_ok) ||
3057 3057 (zplver >= ZPL_VERSION_SA && !sa_ok) ||
3058 3058 (zplver < ZPL_VERSION_NORMALIZATION &&
3059 3059 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
3060 3060 sense != ZFS_PROP_UNDEFINED)))
3061 3061 return (SET_ERROR(ENOTSUP));
3062 3062
3063 3063 /*
3064 3064 * Put the version in the zplprops
3065 3065 */
3066 3066 VERIFY(nvlist_add_uint64(zplprops,
3067 3067 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
3068 3068
3069 3069 if (norm == ZFS_PROP_UNDEFINED)
3070 3070 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0);
3071 3071 VERIFY(nvlist_add_uint64(zplprops,
3072 3072 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
3073 3073
3074 3074 /*
3075 3075 * If we're normalizing, names must always be valid UTF-8 strings.
3076 3076 */
3077 3077 if (norm)
3078 3078 u8 = 1;
3079 3079 if (u8 == ZFS_PROP_UNDEFINED)
3080 3080 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0);
3081 3081 VERIFY(nvlist_add_uint64(zplprops,
3082 3082 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
3083 3083
3084 3084 if (sense == ZFS_PROP_UNDEFINED)
3085 3085 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0);
3086 3086 VERIFY(nvlist_add_uint64(zplprops,
3087 3087 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
3088 3088
3089 3089 if (is_ci)
3090 3090 *is_ci = (sense == ZFS_CASE_INSENSITIVE);
3091 3091
3092 3092 return (0);
3093 3093 }
3094 3094
3095 3095 static int
3096 3096 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
3097 3097 nvlist_t *zplprops, boolean_t *is_ci)
3098 3098 {
3099 3099 boolean_t fuids_ok, sa_ok;
3100 3100 uint64_t zplver = ZPL_VERSION;
3101 3101 objset_t *os = NULL;
3102 3102 char parentname[ZFS_MAX_DATASET_NAME_LEN];
3103 3103 char *cp;
3104 3104 spa_t *spa;
3105 3105 uint64_t spa_vers;
3106 3106 int error;
3107 3107
3108 3108 (void) strlcpy(parentname, dataset, sizeof (parentname));
3109 3109 cp = strrchr(parentname, '/');
3110 3110 ASSERT(cp != NULL);
3111 3111 cp[0] = '\0';
3112 3112
3113 3113 if ((error = spa_open(dataset, &spa, FTAG)) != 0)
3114 3114 return (error);
3115 3115
3116 3116 spa_vers = spa_version(spa);
3117 3117 spa_close(spa, FTAG);
3118 3118
3119 3119 zplver = zfs_zpl_version_map(spa_vers);
3120 3120 fuids_ok = (zplver >= ZPL_VERSION_FUID);
3121 3121 sa_ok = (zplver >= ZPL_VERSION_SA);
3122 3122
3123 3123 /*
3124 3124 * Open parent object set so we can inherit zplprop values.
3125 3125 */
3126 3126 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0)
3127 3127 return (error);
3128 3128
3129 3129 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops,
3130 3130 zplprops, is_ci);
3131 3131 dmu_objset_rele(os, FTAG);
3132 3132 return (error);
3133 3133 }
3134 3134
3135 3135 static int
3136 3136 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops,
3137 3137 nvlist_t *zplprops, boolean_t *is_ci)
3138 3138 {
3139 3139 boolean_t fuids_ok;
3140 3140 boolean_t sa_ok;
3141 3141 uint64_t zplver = ZPL_VERSION;
3142 3142 int error;
3143 3143
3144 3144 zplver = zfs_zpl_version_map(spa_vers);
3145 3145 fuids_ok = (zplver >= ZPL_VERSION_FUID);
3146 3146 sa_ok = (zplver >= ZPL_VERSION_SA);
3147 3147
3148 3148 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok,
3149 3149 createprops, zplprops, is_ci);
3150 3150 return (error);
3151 3151 }
3152 3152
3153 3153 /*
3154 3154 * innvl: {
3155 3155 * "type" -> dmu_objset_type_t (int32)
3156 3156 * (optional) "props" -> { prop -> value }
3157 3157 * }
3158 3158 *
3159 3159 * outnvl: propname -> error code (int32)
3160 3160 */
3161 3161 static int
3162 3162 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3163 3163 {
3164 3164 int error = 0;
3165 3165 zfs_creat_t zct = { 0 };
3166 3166 nvlist_t *nvprops = NULL;
3167 3167 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
3168 3168 int32_t type32;
3169 3169 dmu_objset_type_t type;
3170 3170 boolean_t is_insensitive = B_FALSE;
3171 3171
3172 3172 if (nvlist_lookup_int32(innvl, "type", &type32) != 0)
3173 3173 return (SET_ERROR(EINVAL));
3174 3174 type = type32;
3175 3175 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops);
3176 3176
3177 3177 switch (type) {
3178 3178 case DMU_OST_ZFS:
3179 3179 cbfunc = zfs_create_cb;
3180 3180 break;
3181 3181
3182 3182 case DMU_OST_ZVOL:
3183 3183 cbfunc = zvol_create_cb;
3184 3184 break;
3185 3185
3186 3186 default:
3187 3187 cbfunc = NULL;
3188 3188 break;
3189 3189 }
3190 3190 if (strchr(fsname, '@') ||
3191 3191 strchr(fsname, '%'))
3192 3192 return (SET_ERROR(EINVAL));
3193 3193
3194 3194 zct.zct_props = nvprops;
3195 3195
3196 3196 if (cbfunc == NULL)
3197 3197 return (SET_ERROR(EINVAL));
3198 3198
3199 3199 if (type == DMU_OST_ZVOL) {
3200 3200 uint64_t volsize, volblocksize;
3201 3201
3202 3202 if (nvprops == NULL)
3203 3203 return (SET_ERROR(EINVAL));
3204 3204 if (nvlist_lookup_uint64(nvprops,
3205 3205 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0)
3206 3206 return (SET_ERROR(EINVAL));
3207 3207
3208 3208 if ((error = nvlist_lookup_uint64(nvprops,
3209 3209 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
3210 3210 &volblocksize)) != 0 && error != ENOENT)
3211 3211 return (SET_ERROR(EINVAL));
3212 3212
3213 3213 if (error != 0)
3214 3214 volblocksize = zfs_prop_default_numeric(
3215 3215 ZFS_PROP_VOLBLOCKSIZE);
3216 3216
3217 3217 if ((error = zvol_check_volblocksize(
3218 3218 volblocksize)) != 0 ||
3219 3219 (error = zvol_check_volsize(volsize,
3220 3220 volblocksize)) != 0)
3221 3221 return (error);
3222 3222 } else if (type == DMU_OST_ZFS) {
3223 3223 int error;
3224 3224
3225 3225 /*
3226 3226 * We have to have normalization and
3227 3227 * case-folding flags correct when we do the
3228 3228 * file system creation, so go figure them out
3229 3229 * now.
3230 3230 */
3231 3231 VERIFY(nvlist_alloc(&zct.zct_zplprops,
3232 3232 NV_UNIQUE_NAME, KM_SLEEP) == 0);
3233 3233 error = zfs_fill_zplprops(fsname, nvprops,
3234 3234 zct.zct_zplprops, &is_insensitive);
3235 3235 if (error != 0) {
3236 3236 nvlist_free(zct.zct_zplprops);
3237 3237 return (error);
3238 3238 }
3239 3239 }
3240 3240
3241 3241 error = dmu_objset_create(fsname, type,
3242 3242 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
3243 3243 nvlist_free(zct.zct_zplprops);
3244 3244
3245 3245 /*
3246 3246 * It would be nice to do this atomically.
3247 3247 */
3248 3248 if (error == 0) {
3249 3249 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL,
3250 3250 nvprops, outnvl);
3251 3251 if (error != 0)
3252 3252 (void) dsl_destroy_head(fsname);
3253 3253 }
3254 3254 return (error);
3255 3255 }
3256 3256
3257 3257 /*
3258 3258 * innvl: {
3259 3259 * "origin" -> name of origin snapshot
3260 3260 * (optional) "props" -> { prop -> value }
3261 3261 * }
3262 3262 *
3263 3263 * outnvl: propname -> error code (int32)
3264 3264 */
3265 3265 static int
3266 3266 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3267 3267 {
3268 3268 int error = 0;
3269 3269 nvlist_t *nvprops = NULL;
3270 3270 char *origin_name;
3271 3271
3272 3272 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0)
3273 3273 return (SET_ERROR(EINVAL));
3274 3274 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops);
3275 3275
3276 3276 if (strchr(fsname, '@') ||
3277 3277 strchr(fsname, '%'))
3278 3278 return (SET_ERROR(EINVAL));
3279 3279
3280 3280 if (dataset_namecheck(origin_name, NULL, NULL) != 0)
3281 3281 return (SET_ERROR(EINVAL));
3282 3282 error = dmu_objset_clone(fsname, origin_name);
3283 3283 if (error != 0)
3284 3284 return (error);
3285 3285
3286 3286 /*
3287 3287 * It would be nice to do this atomically.
3288 3288 */
3289 3289 if (error == 0) {
3290 3290 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL,
3291 3291 nvprops, outnvl);
3292 3292 if (error != 0)
3293 3293 (void) dsl_destroy_head(fsname);
3294 3294 }
3295 3295 return (error);
3296 3296 }
3297 3297
3298 3298 /*
3299 3299 * innvl: {
3300 3300 * "snaps" -> { snapshot1, snapshot2 }
3301 3301 * (optional) "props" -> { prop -> value (string) }
3302 3302 * }
3303 3303 *
3304 3304 * outnvl: snapshot -> error code (int32)
3305 3305 */
3306 3306 static int
3307 3307 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3308 3308 {
3309 3309 nvlist_t *snaps;
3310 3310 nvlist_t *props = NULL;
3311 3311 int error, poollen;
3312 3312 nvpair_t *pair;
3313 3313
3314 3314 (void) nvlist_lookup_nvlist(innvl, "props", &props);
3315 3315 if ((error = zfs_check_userprops(poolname, props)) != 0)
3316 3316 return (error);
3317 3317
3318 3318 if (!nvlist_empty(props) &&
3319 3319 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS))
3320 3320 return (SET_ERROR(ENOTSUP));
3321 3321
3322 3322 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
3323 3323 return (SET_ERROR(EINVAL));
3324 3324 poollen = strlen(poolname);
3325 3325 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
3326 3326 pair = nvlist_next_nvpair(snaps, pair)) {
3327 3327 const char *name = nvpair_name(pair);
3328 3328 const char *cp = strchr(name, '@');
3329 3329
3330 3330 /*
3331 3331 * The snap name must contain an @, and the part after it must
3332 3332 * contain only valid characters.
3333 3333 */
3334 3334 if (cp == NULL ||
3335 3335 zfs_component_namecheck(cp + 1, NULL, NULL) != 0)
3336 3336 return (SET_ERROR(EINVAL));
3337 3337
3338 3338 /*
3339 3339 * The snap must be in the specified pool.
3340 3340 */
3341 3341 if (strncmp(name, poolname, poollen) != 0 ||
3342 3342 (name[poollen] != '/' && name[poollen] != '@'))
3343 3343 return (SET_ERROR(EXDEV));
3344 3344
3345 3345 /* This must be the only snap of this fs. */
3346 3346 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair);
3347 3347 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) {
3348 3348 if (strncmp(name, nvpair_name(pair2), cp - name + 1)
3349 3349 == 0) {
3350 3350 return (SET_ERROR(EXDEV));
3351 3351 }
3352 3352 }
3353 3353 }
3354 3354
3355 3355 error = dsl_dataset_snapshot(snaps, props, outnvl);
3356 3356 return (error);
3357 3357 }
3358 3358
3359 3359 /*
3360 3360 * innvl: "message" -> string
3361 3361 */
3362 3362 /* ARGSUSED */
3363 3363 static int
3364 3364 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl)
3365 3365 {
3366 3366 char *message;
3367 3367 spa_t *spa;
3368 3368 int error;
3369 3369 char *poolname;
3370 3370
3371 3371 /*
3372 3372 * The poolname in the ioctl is not set, we get it from the TSD,
3373 3373 * which was set at the end of the last successful ioctl that allows
3374 3374 * logging. The secpolicy func already checked that it is set.
3375 3375 * Only one log ioctl is allowed after each successful ioctl, so
3376 3376 * we clear the TSD here.
3377 3377 */
3378 3378 poolname = tsd_get(zfs_allow_log_key);
3379 3379 (void) tsd_set(zfs_allow_log_key, NULL);
3380 3380 error = spa_open(poolname, &spa, FTAG);
3381 3381 strfree(poolname);
3382 3382 if (error != 0)
3383 3383 return (error);
3384 3384
3385 3385 if (nvlist_lookup_string(innvl, "message", &message) != 0) {
3386 3386 spa_close(spa, FTAG);
3387 3387 return (SET_ERROR(EINVAL));
3388 3388 }
3389 3389
3390 3390 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
3391 3391 spa_close(spa, FTAG);
3392 3392 return (SET_ERROR(ENOTSUP));
3393 3393 }
3394 3394
3395 3395 error = spa_history_log(spa, message);
3396 3396 spa_close(spa, FTAG);
3397 3397 return (error);
3398 3398 }
3399 3399
3400 3400 /*
3401 3401 * The dp_config_rwlock must not be held when calling this, because the
3402 3402 * unmount may need to write out data.
3403 3403 *
3404 3404 * This function is best-effort. Callers must deal gracefully if it
3405 3405 * remains mounted (or is remounted after this call).
3406 3406 *
3407 3407 * Returns 0 if the argument is not a snapshot, or it is not currently a
3408 3408 * filesystem, or we were able to unmount it. Returns error code otherwise.
3409 3409 */
3410 3410 int
3411 3411 zfs_unmount_snap(const char *snapname)
3412 3412 {
3413 3413 vfs_t *vfsp;
3414 3414 zfsvfs_t *zfsvfs;
3415 3415 int err;
3416 3416
3417 3417 if (strchr(snapname, '@') == NULL)
3418 3418 return (0);
3419 3419
3420 3420 vfsp = zfs_get_vfs(snapname);
3421 3421 if (vfsp == NULL)
3422 3422 return (0);
3423 3423
3424 3424 zfsvfs = vfsp->vfs_data;
3425 3425 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os)));
3426 3426
3427 3427 err = vn_vfswlock(vfsp->vfs_vnodecovered);
3428 3428 VFS_RELE(vfsp);
3429 3429 if (err != 0)
3430 3430 return (SET_ERROR(err));
3431 3431
3432 3432 /*
3433 3433 * Always force the unmount for snapshots.
3434 3434 */
3435 3435 (void) dounmount(vfsp, MS_FORCE, kcred);
3436 3436 return (0);
3437 3437 }
3438 3438
3439 3439 /* ARGSUSED */
3440 3440 static int
3441 3441 zfs_unmount_snap_cb(const char *snapname, void *arg)
3442 3442 {
3443 3443 return (zfs_unmount_snap(snapname));
3444 3444 }
3445 3445
3446 3446 /*
3447 3447 * When a clone is destroyed, its origin may also need to be destroyed,
3448 3448 * in which case it must be unmounted. This routine will do that unmount
3449 3449 * if necessary.
3450 3450 */
3451 3451 void
3452 3452 zfs_destroy_unmount_origin(const char *fsname)
3453 3453 {
3454 3454 int error;
3455 3455 objset_t *os;
3456 3456 dsl_dataset_t *ds;
3457 3457
3458 3458 error = dmu_objset_hold(fsname, FTAG, &os);
3459 3459 if (error != 0)
3460 3460 return;
3461 3461 ds = dmu_objset_ds(os);
3462 3462 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) {
3463 3463 char originname[ZFS_MAX_DATASET_NAME_LEN];
3464 3464 dsl_dataset_name(ds->ds_prev, originname);
3465 3465 dmu_objset_rele(os, FTAG);
3466 3466 (void) zfs_unmount_snap(originname);
3467 3467 } else {
3468 3468 dmu_objset_rele(os, FTAG);
3469 3469 }
3470 3470 }
3471 3471
3472 3472 /*
3473 3473 * innvl: {
3474 3474 * "snaps" -> { snapshot1, snapshot2 }
3475 3475 * (optional boolean) "defer"
3476 3476 * }
3477 3477 *
3478 3478 * outnvl: snapshot -> error code (int32)
3479 3479 *
3480 3480 */
3481 3481 /* ARGSUSED */
3482 3482 static int
3483 3483 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3484 3484 {
3485 3485 nvlist_t *snaps;
3486 3486 nvpair_t *pair;
3487 3487 boolean_t defer;
3488 3488
3489 3489 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
3490 3490 return (SET_ERROR(EINVAL));
3491 3491 defer = nvlist_exists(innvl, "defer");
3492 3492
3493 3493 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
3494 3494 pair = nvlist_next_nvpair(snaps, pair)) {
3495 3495 (void) zfs_unmount_snap(nvpair_name(pair));
3496 3496 }
3497 3497
3498 3498 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl));
3499 3499 }
3500 3500
3501 3501 /*
3502 3502 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>.
3503 3503 * All bookmarks must be in the same pool.
3504 3504 *
3505 3505 * innvl: {
3506 3506 * bookmark1 -> snapshot1, bookmark2 -> snapshot2
3507 3507 * }
3508 3508 *
3509 3509 * outnvl: bookmark -> error code (int32)
3510 3510 *
3511 3511 */
3512 3512 /* ARGSUSED */
3513 3513 static int
3514 3514 zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3515 3515 {
3516 3516 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL);
3517 3517 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) {
3518 3518 char *snap_name;
3519 3519
3520 3520 /*
3521 3521 * Verify the snapshot argument.
3522 3522 */
3523 3523 if (nvpair_value_string(pair, &snap_name) != 0)
3524 3524 return (SET_ERROR(EINVAL));
3525 3525
3526 3526
3527 3527 /* Verify that the keys (bookmarks) are unique */
3528 3528 for (nvpair_t *pair2 = nvlist_next_nvpair(innvl, pair);
3529 3529 pair2 != NULL; pair2 = nvlist_next_nvpair(innvl, pair2)) {
3530 3530 if (strcmp(nvpair_name(pair), nvpair_name(pair2)) == 0)
3531 3531 return (SET_ERROR(EINVAL));
3532 3532 }
3533 3533 }
3534 3534
3535 3535 return (dsl_bookmark_create(innvl, outnvl));
3536 3536 }
3537 3537
3538 3538 /*
3539 3539 * innvl: {
3540 3540 * property 1, property 2, ...
3541 3541 * }
3542 3542 *
3543 3543 * outnvl: {
3544 3544 * bookmark name 1 -> { property 1, property 2, ... },
3545 3545 * bookmark name 2 -> { property 1, property 2, ... }
3546 3546 * }
3547 3547 *
3548 3548 */
3549 3549 static int
3550 3550 zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3551 3551 {
3552 3552 return (dsl_get_bookmarks(fsname, innvl, outnvl));
3553 3553 }
3554 3554
3555 3555 /*
3556 3556 * innvl: {
3557 3557 * bookmark name 1, bookmark name 2
3558 3558 * }
3559 3559 *
3560 3560 * outnvl: bookmark -> error code (int32)
3561 3561 *
3562 3562 */
3563 3563 static int
3564 3564 zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl,
3565 3565 nvlist_t *outnvl)
3566 3566 {
3567 3567 int error, poollen;
3568 3568
3569 3569 poollen = strlen(poolname);
3570 3570 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL);
3571 3571 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) {
3572 3572 const char *name = nvpair_name(pair);
3573 3573 const char *cp = strchr(name, '#');
3574 3574
3575 3575 /*
3576 3576 * The bookmark name must contain an #, and the part after it
3577 3577 * must contain only valid characters.
3578 3578 */
3579 3579 if (cp == NULL ||
3580 3580 zfs_component_namecheck(cp + 1, NULL, NULL) != 0)
3581 3581 return (SET_ERROR(EINVAL));
3582 3582
3583 3583 /*
3584 3584 * The bookmark must be in the specified pool.
3585 3585 */
3586 3586 if (strncmp(name, poolname, poollen) != 0 ||
3587 3587 (name[poollen] != '/' && name[poollen] != '#'))
3588 3588 return (SET_ERROR(EXDEV));
3589 3589 }
3590 3590
3591 3591 error = dsl_bookmark_destroy(innvl, outnvl);
3592 3592 return (error);
3593 3593 }
3594 3594
3595 3595 /*
3596 3596 * inputs:
3597 3597 * zc_name name of dataset to destroy
3598 3598 * zc_objset_type type of objset
3599 3599 * zc_defer_destroy mark for deferred destroy
3600 3600 *
3601 3601 * outputs: none
3602 3602 */
3603 3603 static int
3604 3604 zfs_ioc_destroy(zfs_cmd_t *zc)
3605 3605 {
3606 3606 int err;
3607 3607
3608 3608 if (zc->zc_objset_type == DMU_OST_ZFS) {
3609 3609 err = zfs_unmount_snap(zc->zc_name);
3610 3610 if (err != 0)
3611 3611 return (err);
3612 3612 }
3613 3613
3614 3614 if (strchr(zc->zc_name, '@'))
3615 3615 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy);
3616 3616 else
3617 3617 err = dsl_destroy_head(zc->zc_name);
3618 3618 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0)
3619 3619 (void) zvol_remove_minor(zc->zc_name);
3620 3620 return (err);
3621 3621 }
3622 3622
3623 3623 /*
3624 3624 * fsname is name of dataset to rollback (to most recent snapshot)
3625 3625 *
3626 3626 * innvl is not used.
3627 3627 *
3628 3628 * outnvl: "target" -> name of most recent snapshot
3629 3629 * }
3630 3630 */
3631 3631 /* ARGSUSED */
3632 3632 static int
3633 3633 zfs_ioc_rollback(const char *fsname, nvlist_t *args, nvlist_t *outnvl)
3634 3634 {
3635 3635 zfsvfs_t *zfsvfs;
3636 3636 int error;
3637 3637
3638 3638 if (getzfsvfs(fsname, &zfsvfs) == 0) {
3639 3639 error = zfs_suspend_fs(zfsvfs);
3640 3640 if (error == 0) {
3641 3641 int resume_err;
3642 3642
3643 3643 error = dsl_dataset_rollback(fsname, zfsvfs, outnvl);
3644 3644 resume_err = zfs_resume_fs(zfsvfs, fsname);
3645 3645 error = error ? error : resume_err;
3646 3646 }
3647 3647 VFS_RELE(zfsvfs->z_vfs);
3648 3648 } else {
3649 3649 error = dsl_dataset_rollback(fsname, NULL, outnvl);
3650 3650 }
3651 3651 return (error);
3652 3652 }
3653 3653
3654 3654 static int
3655 3655 recursive_unmount(const char *fsname, void *arg)
3656 3656 {
3657 3657 const char *snapname = arg;
3658 3658 char fullname[ZFS_MAX_DATASET_NAME_LEN];
3659 3659
3660 3660 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname);
3661 3661 return (zfs_unmount_snap(fullname));
3662 3662 }
3663 3663
3664 3664 /*
3665 3665 * inputs:
3666 3666 * zc_name old name of dataset
3667 3667 * zc_value new name of dataset
3668 3668 * zc_cookie recursive flag (only valid for snapshots)
3669 3669 *
3670 3670 * outputs: none
3671 3671 */
3672 3672 static int
3673 3673 zfs_ioc_rename(zfs_cmd_t *zc)
3674 3674 {
3675 3675 boolean_t recursive = zc->zc_cookie & 1;
3676 3676 char *at;
3677 3677
3678 3678 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
3679 3679 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3680 3680 strchr(zc->zc_value, '%'))
3681 3681 return (SET_ERROR(EINVAL));
3682 3682
3683 3683 at = strchr(zc->zc_name, '@');
3684 3684 if (at != NULL) {
3685 3685 /* snaps must be in same fs */
3686 3686 int error;
3687 3687
3688 3688 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1))
3689 3689 return (SET_ERROR(EXDEV));
3690 3690 *at = '\0';
3691 3691 if (zc->zc_objset_type == DMU_OST_ZFS) {
3692 3692 error = dmu_objset_find(zc->zc_name,
3693 3693 recursive_unmount, at + 1,
3694 3694 recursive ? DS_FIND_CHILDREN : 0);
3695 3695 if (error != 0) {
3696 3696 *at = '@';
3697 3697 return (error);
3698 3698 }
3699 3699 }
3700 3700 error = dsl_dataset_rename_snapshot(zc->zc_name,
3701 3701 at + 1, strchr(zc->zc_value, '@') + 1, recursive);
3702 3702 *at = '@';
3703 3703
3704 3704 return (error);
3705 3705 } else {
3706 3706 if (zc->zc_objset_type == DMU_OST_ZVOL)
3707 3707 (void) zvol_remove_minor(zc->zc_name);
3708 3708 return (dsl_dir_rename(zc->zc_name, zc->zc_value));
3709 3709 }
3710 3710 }
3711 3711
3712 3712 static int
3713 3713 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr)
3714 3714 {
3715 3715 const char *propname = nvpair_name(pair);
3716 3716 boolean_t issnap = (strchr(dsname, '@') != NULL);
3717 3717 zfs_prop_t prop = zfs_name_to_prop(propname);
3718 3718 uint64_t intval;
3719 3719 int err;
3720 3720
3721 3721 if (prop == ZPROP_INVAL) {
3722 3722 if (zfs_prop_user(propname)) {
3723 3723 if (err = zfs_secpolicy_write_perms(dsname,
3724 3724 ZFS_DELEG_PERM_USERPROP, cr))
3725 3725 return (err);
3726 3726 return (0);
3727 3727 }
3728 3728
3729 3729 if (!issnap && zfs_prop_userquota(propname)) {
3730 3730 const char *perm = NULL;
3731 3731 const char *uq_prefix =
3732 3732 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA];
3733 3733 const char *gq_prefix =
3734 3734 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA];
3735 3735
3736 3736 if (strncmp(propname, uq_prefix,
3737 3737 strlen(uq_prefix)) == 0) {
3738 3738 perm = ZFS_DELEG_PERM_USERQUOTA;
3739 3739 } else if (strncmp(propname, gq_prefix,
3740 3740 strlen(gq_prefix)) == 0) {
3741 3741 perm = ZFS_DELEG_PERM_GROUPQUOTA;
3742 3742 } else {
3743 3743 /* USERUSED and GROUPUSED are read-only */
3744 3744 return (SET_ERROR(EINVAL));
3745 3745 }
3746 3746
3747 3747 if (err = zfs_secpolicy_write_perms(dsname, perm, cr))
3748 3748 return (err);
3749 3749 return (0);
3750 3750 }
3751 3751
3752 3752 return (SET_ERROR(EINVAL));
3753 3753 }
3754 3754
3755 3755 if (issnap)
3756 3756 return (SET_ERROR(EINVAL));
3757 3757
3758 3758 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
3759 3759 /*
3760 3760 * dsl_prop_get_all_impl() returns properties in this
3761 3761 * format.
3762 3762 */
3763 3763 nvlist_t *attrs;
3764 3764 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
3765 3765 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3766 3766 &pair) == 0);
3767 3767 }
3768 3768
3769 3769 /*
3770 3770 * Check that this value is valid for this pool version
3771 3771 */
3772 3772 switch (prop) {
3773 3773 case ZFS_PROP_COMPRESSION:
3774 3774 /*
3775 3775 * If the user specified gzip compression, make sure
3776 3776 * the SPA supports it. We ignore any errors here since
3777 3777 * we'll catch them later.
3778 3778 */
3779 3779 if (nvpair_value_uint64(pair, &intval) == 0) {
3780 3780 if (intval >= ZIO_COMPRESS_GZIP_1 &&
3781 3781 intval <= ZIO_COMPRESS_GZIP_9 &&
3782 3782 zfs_earlier_version(dsname,
3783 3783 SPA_VERSION_GZIP_COMPRESSION)) {
3784 3784 return (SET_ERROR(ENOTSUP));
3785 3785 }
3786 3786
3787 3787 if (intval == ZIO_COMPRESS_ZLE &&
3788 3788 zfs_earlier_version(dsname,
3789 3789 SPA_VERSION_ZLE_COMPRESSION))
3790 3790 return (SET_ERROR(ENOTSUP));
3791 3791
3792 3792 if (intval == ZIO_COMPRESS_LZ4) {
3793 3793 spa_t *spa;
3794 3794
3795 3795 if ((err = spa_open(dsname, &spa, FTAG)) != 0)
3796 3796 return (err);
3797 3797
3798 3798 if (!spa_feature_is_enabled(spa,
3799 3799 SPA_FEATURE_LZ4_COMPRESS)) {
3800 3800 spa_close(spa, FTAG);
3801 3801 return (SET_ERROR(ENOTSUP));
3802 3802 }
3803 3803 spa_close(spa, FTAG);
3804 3804 }
3805 3805
3806 3806 /*
3807 3807 * If this is a bootable dataset then
3808 3808 * verify that the compression algorithm
3809 3809 * is supported for booting. We must return
3810 3810 * something other than ENOTSUP since it
3811 3811 * implies a downrev pool version.
3812 3812 */
3813 3813 if (zfs_is_bootfs(dsname) &&
3814 3814 !BOOTFS_COMPRESS_VALID(intval)) {
3815 3815 return (SET_ERROR(ERANGE));
3816 3816 }
3817 3817 }
3818 3818 break;
3819 3819
3820 3820 case ZFS_PROP_COPIES:
3821 3821 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS))
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(ERANGE));
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(ERANGE));
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 case ZFS_PROP_CHECKSUM:
3877 3877 case ZFS_PROP_DEDUP:
3878 3878 {
3879 3879 spa_feature_t feature;
3880 3880 spa_t *spa;
3881 3881
3882 3882 /* dedup feature version checks */
3883 3883 if (prop == ZFS_PROP_DEDUP &&
3884 3884 zfs_earlier_version(dsname, SPA_VERSION_DEDUP))
3885 3885 return (SET_ERROR(ENOTSUP));
3886 3886
3887 3887 if (nvpair_value_uint64(pair, &intval) != 0)
3888 3888 return (SET_ERROR(EINVAL));
3889 3889
3890 3890 /* check prop value is enabled in features */
3891 3891 feature = zio_checksum_to_feature(intval & ZIO_CHECKSUM_MASK);
3892 3892 if (feature == SPA_FEATURE_NONE)
3893 3893 break;
3894 3894
3895 3895 if ((err = spa_open(dsname, &spa, FTAG)) != 0)
3896 3896 return (err);
3897 3897 /*
3898 3898 * Salted checksums are not supported on root pools.
3899 3899 */
3900 3900 if (spa_bootfs(spa) != 0 &&
3901 3901 intval < ZIO_CHECKSUM_FUNCTIONS &&
3902 3902 (zio_checksum_table[intval].ci_flags &
3903 3903 ZCHECKSUM_FLAG_SALTED)) {
3904 3904 spa_close(spa, FTAG);
3905 3905 return (SET_ERROR(ERANGE));
3906 3906 }
3907 3907 if (!spa_feature_is_enabled(spa, feature)) {
3908 3908 spa_close(spa, FTAG);
3909 3909 return (SET_ERROR(ENOTSUP));
3910 3910 }
3911 3911 spa_close(spa, FTAG);
3912 3912 break;
3913 3913 }
3914 3914 }
3915 3915
3916 3916 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED()));
3917 3917 }
3918 3918
3919 3919 /*
3920 3920 * Checks for a race condition to make sure we don't increment a feature flag
3921 3921 * multiple times.
3922 3922 */
3923 3923 static int
3924 3924 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx)
3925 3925 {
3926 3926 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
3927 3927 spa_feature_t *featurep = arg;
3928 3928
3929 3929 if (!spa_feature_is_active(spa, *featurep))
3930 3930 return (0);
3931 3931 else
3932 3932 return (SET_ERROR(EBUSY));
3933 3933 }
3934 3934
3935 3935 /*
3936 3936 * The callback invoked on feature activation in the sync task caused by
3937 3937 * zfs_prop_activate_feature.
3938 3938 */
3939 3939 static void
3940 3940 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx)
3941 3941 {
3942 3942 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
3943 3943 spa_feature_t *featurep = arg;
3944 3944
3945 3945 spa_feature_incr(spa, *featurep, tx);
3946 3946 }
3947 3947
3948 3948 /*
3949 3949 * Activates a feature on a pool in response to a property setting. This
3950 3950 * creates a new sync task which modifies the pool to reflect the feature
3951 3951 * as being active.
3952 3952 */
3953 3953 static int
3954 3954 zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature)
3955 3955 {
3956 3956 int err;
3957 3957
3958 3958 /* EBUSY here indicates that the feature is already active */
3959 3959 err = dsl_sync_task(spa_name(spa),
3960 3960 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync,
3961 3961 &feature, 2, ZFS_SPACE_CHECK_RESERVED);
3962 3962
3963 3963 if (err != 0 && err != EBUSY)
3964 3964 return (err);
3965 3965 else
3966 3966 return (0);
3967 3967 }
3968 3968
3969 3969 /*
3970 3970 * Removes properties from the given props list that fail permission checks
3971 3971 * needed to clear them and to restore them in case of a receive error. For each
3972 3972 * property, make sure we have both set and inherit permissions.
3973 3973 *
3974 3974 * Returns the first error encountered if any permission checks fail. If the
3975 3975 * caller provides a non-NULL errlist, it also gives the complete list of names
3976 3976 * of all the properties that failed a permission check along with the
3977 3977 * corresponding error numbers. The caller is responsible for freeing the
3978 3978 * returned errlist.
3979 3979 *
3980 3980 * If every property checks out successfully, zero is returned and the list
3981 3981 * pointed at by errlist is NULL.
3982 3982 */
3983 3983 static int
3984 3984 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist)
3985 3985 {
3986 3986 zfs_cmd_t *zc;
3987 3987 nvpair_t *pair, *next_pair;
3988 3988 nvlist_t *errors;
3989 3989 int err, rv = 0;
3990 3990
3991 3991 if (props == NULL)
3992 3992 return (0);
3993 3993
3994 3994 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
3995 3995
3996 3996 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP);
3997 3997 (void) strcpy(zc->zc_name, dataset);
3998 3998 pair = nvlist_next_nvpair(props, NULL);
3999 3999 while (pair != NULL) {
4000 4000 next_pair = nvlist_next_nvpair(props, pair);
4001 4001
4002 4002 (void) strcpy(zc->zc_value, nvpair_name(pair));
4003 4003 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 ||
4004 4004 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) {
4005 4005 VERIFY(nvlist_remove_nvpair(props, pair) == 0);
4006 4006 VERIFY(nvlist_add_int32(errors,
4007 4007 zc->zc_value, err) == 0);
4008 4008 }
4009 4009 pair = next_pair;
4010 4010 }
4011 4011 kmem_free(zc, sizeof (zfs_cmd_t));
4012 4012
4013 4013 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
4014 4014 nvlist_free(errors);
4015 4015 errors = NULL;
4016 4016 } else {
4017 4017 VERIFY(nvpair_value_int32(pair, &rv) == 0);
4018 4018 }
4019 4019
4020 4020 if (errlist == NULL)
4021 4021 nvlist_free(errors);
4022 4022 else
4023 4023 *errlist = errors;
4024 4024
4025 4025 return (rv);
4026 4026 }
4027 4027
4028 4028 static boolean_t
4029 4029 propval_equals(nvpair_t *p1, nvpair_t *p2)
4030 4030 {
4031 4031 if (nvpair_type(p1) == DATA_TYPE_NVLIST) {
4032 4032 /* dsl_prop_get_all_impl() format */
4033 4033 nvlist_t *attrs;
4034 4034 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0);
4035 4035 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
4036 4036 &p1) == 0);
4037 4037 }
4038 4038
4039 4039 if (nvpair_type(p2) == DATA_TYPE_NVLIST) {
4040 4040 nvlist_t *attrs;
4041 4041 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0);
4042 4042 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
4043 4043 &p2) == 0);
4044 4044 }
4045 4045
4046 4046 if (nvpair_type(p1) != nvpair_type(p2))
4047 4047 return (B_FALSE);
4048 4048
4049 4049 if (nvpair_type(p1) == DATA_TYPE_STRING) {
4050 4050 char *valstr1, *valstr2;
4051 4051
4052 4052 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0);
4053 4053 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0);
4054 4054 return (strcmp(valstr1, valstr2) == 0);
4055 4055 } else {
4056 4056 uint64_t intval1, intval2;
4057 4057
4058 4058 VERIFY(nvpair_value_uint64(p1, &intval1) == 0);
4059 4059 VERIFY(nvpair_value_uint64(p2, &intval2) == 0);
4060 4060 return (intval1 == intval2);
4061 4061 }
4062 4062 }
4063 4063
4064 4064 /*
4065 4065 * Remove properties from props if they are not going to change (as determined
4066 4066 * by comparison with origprops). Remove them from origprops as well, since we
4067 4067 * do not need to clear or restore properties that won't change.
4068 4068 */
4069 4069 static void
4070 4070 props_reduce(nvlist_t *props, nvlist_t *origprops)
4071 4071 {
4072 4072 nvpair_t *pair, *next_pair;
4073 4073
4074 4074 if (origprops == NULL)
4075 4075 return; /* all props need to be received */
4076 4076
4077 4077 pair = nvlist_next_nvpair(props, NULL);
4078 4078 while (pair != NULL) {
4079 4079 const char *propname = nvpair_name(pair);
4080 4080 nvpair_t *match;
4081 4081
4082 4082 next_pair = nvlist_next_nvpair(props, pair);
4083 4083
4084 4084 if ((nvlist_lookup_nvpair(origprops, propname,
4085 4085 &match) != 0) || !propval_equals(pair, match))
4086 4086 goto next; /* need to set received value */
4087 4087
4088 4088 /* don't clear the existing received value */
4089 4089 (void) nvlist_remove_nvpair(origprops, match);
4090 4090 /* don't bother receiving the property */
4091 4091 (void) nvlist_remove_nvpair(props, pair);
4092 4092 next:
4093 4093 pair = next_pair;
4094 4094 }
4095 4095 }
4096 4096
4097 4097 /*
4098 4098 * Extract properties that cannot be set PRIOR to the receipt of a dataset.
4099 4099 * For example, refquota cannot be set until after the receipt of a dataset,
4100 4100 * because in replication streams, an older/earlier snapshot may exceed the
4101 4101 * refquota. We want to receive the older/earlier snapshot, but setting
4102 4102 * refquota pre-receipt will set the dsl's ACTUAL quota, which will prevent
4103 4103 * the older/earlier snapshot from being received (with EDQUOT).
4104 4104 *
4105 4105 * The ZFS test "zfs_receive_011_pos" demonstrates such a scenario.
4106 4106 *
4107 4107 * libzfs will need to be judicious handling errors encountered by props
4108 4108 * extracted by this function.
4109 4109 */
4110 4110 static nvlist_t *
4111 4111 extract_delay_props(nvlist_t *props)
4112 4112 {
4113 4113 nvlist_t *delayprops;
4114 4114 nvpair_t *nvp, *tmp;
4115 4115 static const zfs_prop_t delayable[] = { ZFS_PROP_REFQUOTA, 0 };
4116 4116 int i;
4117 4117
4118 4118 VERIFY(nvlist_alloc(&delayprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
4119 4119
4120 4120 for (nvp = nvlist_next_nvpair(props, NULL); nvp != NULL;
4121 4121 nvp = nvlist_next_nvpair(props, nvp)) {
4122 4122 /*
4123 4123 * strcmp() is safe because zfs_prop_to_name() always returns
4124 4124 * a bounded string.
4125 4125 */
4126 4126 for (i = 0; delayable[i] != 0; i++) {
4127 4127 if (strcmp(zfs_prop_to_name(delayable[i]),
4128 4128 nvpair_name(nvp)) == 0) {
4129 4129 break;
4130 4130 }
4131 4131 }
4132 4132 if (delayable[i] != 0) {
4133 4133 tmp = nvlist_prev_nvpair(props, nvp);
4134 4134 VERIFY(nvlist_add_nvpair(delayprops, nvp) == 0);
4135 4135 VERIFY(nvlist_remove_nvpair(props, nvp) == 0);
4136 4136 nvp = tmp;
4137 4137 }
4138 4138 }
4139 4139
4140 4140 if (nvlist_empty(delayprops)) {
4141 4141 nvlist_free(delayprops);
4142 4142 delayprops = NULL;
4143 4143 }
4144 4144 return (delayprops);
4145 4145 }
4146 4146
4147 4147 #ifdef DEBUG
4148 4148 static boolean_t zfs_ioc_recv_inject_err;
4149 4149 #endif
4150 4150
4151 4151 /*
4152 4152 * inputs:
4153 4153 * zc_name name of containing filesystem
4154 4154 * zc_nvlist_src{_size} nvlist of properties to apply
4155 4155 * zc_value name of snapshot to create
4156 4156 * zc_string name of clone origin (if DRR_FLAG_CLONE)
4157 4157 * zc_cookie file descriptor to recv from
4158 4158 * zc_begin_record the BEGIN record of the stream (not byteswapped)
4159 4159 * zc_guid force flag
4160 4160 * zc_cleanup_fd cleanup-on-exit file descriptor
4161 4161 * zc_action_handle handle for this guid/ds mapping (or zero on first call)
4162 4162 * zc_resumable if data is incomplete assume sender will resume
4163 4163 *
4164 4164 * outputs:
4165 4165 * zc_cookie number of bytes read
4166 4166 * zc_nvlist_dst{_size} error for each unapplied received property
4167 4167 * zc_obj zprop_errflags_t
4168 4168 * zc_action_handle handle for this guid/ds mapping
4169 4169 */
4170 4170 static int
4171 4171 zfs_ioc_recv(zfs_cmd_t *zc)
4172 4172 {
4173 4173 file_t *fp;
4174 4174 dmu_recv_cookie_t drc;
4175 4175 boolean_t force = (boolean_t)zc->zc_guid;
4176 4176 int fd;
4177 4177 int error = 0;
4178 4178 int props_error = 0;
4179 4179 nvlist_t *errors;
4180 4180 offset_t off;
4181 4181 nvlist_t *props = NULL; /* sent properties */
4182 4182 nvlist_t *origprops = NULL; /* existing properties */
4183 4183 nvlist_t *delayprops = NULL; /* sent properties applied post-receive */
4184 4184 char *origin = NULL;
4185 4185 char *tosnap;
4186 4186 char tofs[ZFS_MAX_DATASET_NAME_LEN];
4187 4187 boolean_t first_recvd_props = B_FALSE;
4188 4188
4189 4189 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
4190 4190 strchr(zc->zc_value, '@') == NULL ||
4191 4191 strchr(zc->zc_value, '%'))
4192 4192 return (SET_ERROR(EINVAL));
4193 4193
4194 4194 (void) strcpy(tofs, zc->zc_value);
4195 4195 tosnap = strchr(tofs, '@');
4196 4196 *tosnap++ = '\0';
4197 4197
4198 4198 if (zc->zc_nvlist_src != NULL &&
4199 4199 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
4200 4200 zc->zc_iflags, &props)) != 0)
4201 4201 return (error);
4202 4202
4203 4203 fd = zc->zc_cookie;
4204 4204 fp = getf(fd);
4205 4205 if (fp == NULL) {
4206 4206 nvlist_free(props);
4207 4207 return (SET_ERROR(EBADF));
4208 4208 }
4209 4209
4210 4210 errors = fnvlist_alloc();
4211 4211
4212 4212 if (zc->zc_string[0])
4213 4213 origin = zc->zc_string;
4214 4214
4215 4215 error = dmu_recv_begin(tofs, tosnap,
4216 4216 &zc->zc_begin_record, force, zc->zc_resumable, origin, &drc);
4217 4217 if (error != 0)
4218 4218 goto out;
4219 4219
4220 4220 /*
4221 4221 * Set properties before we receive the stream so that they are applied
4222 4222 * to the new data. Note that we must call dmu_recv_stream() if
4223 4223 * dmu_recv_begin() succeeds.
4224 4224 */
4225 4225 if (props != NULL && !drc.drc_newfs) {
4226 4226 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >=
4227 4227 SPA_VERSION_RECVD_PROPS &&
4228 4228 !dsl_prop_get_hasrecvd(tofs))
4229 4229 first_recvd_props = B_TRUE;
4230 4230
4231 4231 /*
4232 4232 * If new received properties are supplied, they are to
4233 4233 * completely replace the existing received properties, so stash
4234 4234 * away the existing ones.
4235 4235 */
4236 4236 if (dsl_prop_get_received(tofs, &origprops) == 0) {
4237 4237 nvlist_t *errlist = NULL;
4238 4238 /*
4239 4239 * Don't bother writing a property if its value won't
4240 4240 * change (and avoid the unnecessary security checks).
4241 4241 *
4242 4242 * The first receive after SPA_VERSION_RECVD_PROPS is a
4243 4243 * special case where we blow away all local properties
4244 4244 * regardless.
4245 4245 */
4246 4246 if (!first_recvd_props)
4247 4247 props_reduce(props, origprops);
4248 4248 if (zfs_check_clearable(tofs, origprops, &errlist) != 0)
4249 4249 (void) nvlist_merge(errors, errlist, 0);
4250 4250 nvlist_free(errlist);
4251 4251
4252 4252 if (clear_received_props(tofs, origprops,
4253 4253 first_recvd_props ? NULL : props) != 0)
4254 4254 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
4255 4255 } else {
4256 4256 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
4257 4257 }
4258 4258 }
4259 4259
4260 4260 if (props != NULL) {
4261 4261 props_error = dsl_prop_set_hasrecvd(tofs);
4262 4262
4263 4263 if (props_error == 0) {
4264 4264 delayprops = extract_delay_props(props);
4265 4265 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
4266 4266 props, errors);
4267 4267 }
4268 4268 }
4269 4269
4270 4270 off = fp->f_offset;
4271 4271 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd,
4272 4272 &zc->zc_action_handle);
4273 4273
4274 4274 if (error == 0) {
4275 4275 zfsvfs_t *zfsvfs = NULL;
4276 4276
4277 4277 if (getzfsvfs(tofs, &zfsvfs) == 0) {
4278 4278 /* online recv */
4279 4279 int end_err;
4280 4280
4281 4281 error = zfs_suspend_fs(zfsvfs);
4282 4282 /*
4283 4283 * If the suspend fails, then the recv_end will
4284 4284 * likely also fail, and clean up after itself.
4285 4285 */
4286 4286 end_err = dmu_recv_end(&drc, zfsvfs);
4287 4287 if (error == 0)
4288 4288 error = zfs_resume_fs(zfsvfs, tofs);
4289 4289 error = error ? error : end_err;
4290 4290 VFS_RELE(zfsvfs->z_vfs);
4291 4291 } else {
4292 4292 error = dmu_recv_end(&drc, NULL);
4293 4293 }
4294 4294
4295 4295 /* Set delayed properties now, after we're done receiving. */
4296 4296 if (delayprops != NULL && error == 0) {
4297 4297 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
4298 4298 delayprops, errors);
4299 4299 }
4300 4300 }
4301 4301
4302 4302 if (delayprops != NULL) {
4303 4303 /*
4304 4304 * Merge delayed props back in with initial props, in case
4305 4305 * we're DEBUG and zfs_ioc_recv_inject_err is set (which means
4306 4306 * we have to make sure clear_received_props() includes
4307 4307 * the delayed properties).
4308 4308 *
4309 4309 * Since zfs_ioc_recv_inject_err is only in DEBUG kernels,
4310 4310 * using ASSERT() will be just like a VERIFY.
4311 4311 */
4312 4312 ASSERT(nvlist_merge(props, delayprops, 0) == 0);
4313 4313 nvlist_free(delayprops);
4314 4314 }
4315 4315
4316 4316 /*
4317 4317 * Now that all props, initial and delayed, are set, report the prop
4318 4318 * errors to the caller.
4319 4319 */
4320 4320 if (zc->zc_nvlist_dst_size != 0 &&
4321 4321 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 ||
4322 4322 put_nvlist(zc, errors) != 0)) {
4323 4323 /*
4324 4324 * Caller made zc->zc_nvlist_dst less than the minimum expected
4325 4325 * size or supplied an invalid address.
4326 4326 */
4327 4327 props_error = SET_ERROR(EINVAL);
4328 4328 }
4329 4329
4330 4330 zc->zc_cookie = off - fp->f_offset;
4331 4331 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4332 4332 fp->f_offset = off;
4333 4333
4334 4334 #ifdef DEBUG
4335 4335 if (zfs_ioc_recv_inject_err) {
4336 4336 zfs_ioc_recv_inject_err = B_FALSE;
4337 4337 error = 1;
4338 4338 }
4339 4339 #endif
4340 4340 /*
4341 4341 * On error, restore the original props.
4342 4342 */
4343 4343 if (error != 0 && props != NULL && !drc.drc_newfs) {
4344 4344 if (clear_received_props(tofs, props, NULL) != 0) {
4345 4345 /*
4346 4346 * We failed to clear the received properties.
4347 4347 * Since we may have left a $recvd value on the
4348 4348 * system, we can't clear the $hasrecvd flag.
4349 4349 */
4350 4350 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4351 4351 } else if (first_recvd_props) {
4352 4352 dsl_prop_unset_hasrecvd(tofs);
4353 4353 }
4354 4354
4355 4355 if (origprops == NULL && !drc.drc_newfs) {
4356 4356 /* We failed to stash the original properties. */
4357 4357 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4358 4358 }
4359 4359
4360 4360 /*
4361 4361 * dsl_props_set() will not convert RECEIVED to LOCAL on or
4362 4362 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL
4363 4363 * explictly if we're restoring local properties cleared in the
4364 4364 * first new-style receive.
4365 4365 */
4366 4366 if (origprops != NULL &&
4367 4367 zfs_set_prop_nvlist(tofs, (first_recvd_props ?
4368 4368 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED),
4369 4369 origprops, NULL) != 0) {
4370 4370 /*
4371 4371 * We stashed the original properties but failed to
4372 4372 * restore them.
4373 4373 */
4374 4374 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4375 4375 }
4376 4376 }
4377 4377 out:
4378 4378 nvlist_free(props);
4379 4379 nvlist_free(origprops);
4380 4380 nvlist_free(errors);
4381 4381 releasef(fd);
4382 4382
4383 4383 if (error == 0)
4384 4384 error = props_error;
4385 4385
4386 4386 return (error);
4387 4387 }
4388 4388
4389 4389 /*
4390 4390 * inputs:
4391 4391 * zc_name name of snapshot to send
4392 4392 * zc_cookie file descriptor to send stream to
4393 4393 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj)
4394 4394 * zc_sendobj objsetid of snapshot to send
4395 4395 * zc_fromobj objsetid of incremental fromsnap (may be zero)
4396 4396 * zc_guid if set, estimate size of stream only. zc_cookie is ignored.
4397 4397 * output size in zc_objset_type.
4398 4398 * zc_flags lzc_send_flags
4399 4399 *
4400 4400 * outputs:
4401 4401 * zc_objset_type estimated size, if zc_guid is set
4402 4402 */
4403 4403 static int
4404 4404 zfs_ioc_send(zfs_cmd_t *zc)
4405 4405 {
4406 4406 int error;
4407 4407 offset_t off;
4408 4408 boolean_t estimate = (zc->zc_guid != 0);
4409 4409 boolean_t embedok = (zc->zc_flags & 0x1);
4410 4410 boolean_t large_block_ok = (zc->zc_flags & 0x2);
4411 4411
4412 4412 if (zc->zc_obj != 0) {
4413 4413 dsl_pool_t *dp;
4414 4414 dsl_dataset_t *tosnap;
4415 4415
4416 4416 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4417 4417 if (error != 0)
4418 4418 return (error);
4419 4419
4420 4420 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap);
4421 4421 if (error != 0) {
4422 4422 dsl_pool_rele(dp, FTAG);
4423 4423 return (error);
4424 4424 }
4425 4425
4426 4426 if (dsl_dir_is_clone(tosnap->ds_dir))
4427 4427 zc->zc_fromobj =
4428 4428 dsl_dir_phys(tosnap->ds_dir)->dd_origin_obj;
4429 4429 dsl_dataset_rele(tosnap, FTAG);
4430 4430 dsl_pool_rele(dp, FTAG);
4431 4431 }
4432 4432
4433 4433 if (estimate) {
4434 4434 dsl_pool_t *dp;
4435 4435 dsl_dataset_t *tosnap;
4436 4436 dsl_dataset_t *fromsnap = NULL;
4437 4437
4438 4438 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4439 4439 if (error != 0)
4440 4440 return (error);
4441 4441
4442 4442 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap);
4443 4443 if (error != 0) {
4444 4444 dsl_pool_rele(dp, FTAG);
4445 4445 return (error);
4446 4446 }
4447 4447
4448 4448 if (zc->zc_fromobj != 0) {
4449 4449 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj,
4450 4450 FTAG, &fromsnap);
4451 4451 if (error != 0) {
4452 4452 dsl_dataset_rele(tosnap, FTAG);
4453 4453 dsl_pool_rele(dp, FTAG);
4454 4454 return (error);
4455 4455 }
4456 4456 }
4457 4457
4458 4458 error = dmu_send_estimate(tosnap, fromsnap,
4459 4459 &zc->zc_objset_type);
4460 4460
4461 4461 if (fromsnap != NULL)
4462 4462 dsl_dataset_rele(fromsnap, FTAG);
4463 4463 dsl_dataset_rele(tosnap, FTAG);
4464 4464 dsl_pool_rele(dp, FTAG);
4465 4465 } else {
4466 4466 file_t *fp = getf(zc->zc_cookie);
4467 4467 if (fp == NULL)
4468 4468 return (SET_ERROR(EBADF));
4469 4469
4470 4470 off = fp->f_offset;
4471 4471 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj,
4472 4472 zc->zc_fromobj, embedok, large_block_ok,
4473 4473 zc->zc_cookie, fp->f_vnode, &off);
4474 4474
4475 4475 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4476 4476 fp->f_offset = off;
4477 4477 releasef(zc->zc_cookie);
4478 4478 }
4479 4479 return (error);
4480 4480 }
4481 4481
4482 4482 /*
4483 4483 * inputs:
4484 4484 * zc_name name of snapshot on which to report progress
4485 4485 * zc_cookie file descriptor of send stream
4486 4486 *
4487 4487 * outputs:
4488 4488 * zc_cookie number of bytes written in send stream thus far
4489 4489 */
4490 4490 static int
4491 4491 zfs_ioc_send_progress(zfs_cmd_t *zc)
4492 4492 {
4493 4493 dsl_pool_t *dp;
4494 4494 dsl_dataset_t *ds;
4495 4495 dmu_sendarg_t *dsp = NULL;
4496 4496 int error;
4497 4497
4498 4498 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4499 4499 if (error != 0)
4500 4500 return (error);
4501 4501
4502 4502 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds);
4503 4503 if (error != 0) {
4504 4504 dsl_pool_rele(dp, FTAG);
4505 4505 return (error);
4506 4506 }
4507 4507
4508 4508 mutex_enter(&ds->ds_sendstream_lock);
4509 4509
4510 4510 /*
4511 4511 * Iterate over all the send streams currently active on this dataset.
4512 4512 * If there's one which matches the specified file descriptor _and_ the
4513 4513 * stream was started by the current process, return the progress of
4514 4514 * that stream.
4515 4515 */
4516 4516 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL;
4517 4517 dsp = list_next(&ds->ds_sendstreams, dsp)) {
4518 4518 if (dsp->dsa_outfd == zc->zc_cookie &&
4519 4519 dsp->dsa_proc == curproc)
4520 4520 break;
4521 4521 }
4522 4522
4523 4523 if (dsp != NULL)
4524 4524 zc->zc_cookie = *(dsp->dsa_off);
4525 4525 else
4526 4526 error = SET_ERROR(ENOENT);
4527 4527
4528 4528 mutex_exit(&ds->ds_sendstream_lock);
4529 4529 dsl_dataset_rele(ds, FTAG);
4530 4530 dsl_pool_rele(dp, FTAG);
4531 4531 return (error);
4532 4532 }
4533 4533
4534 4534 static int
4535 4535 zfs_ioc_inject_fault(zfs_cmd_t *zc)
4536 4536 {
4537 4537 int id, error;
4538 4538
4539 4539 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id,
4540 4540 &zc->zc_inject_record);
4541 4541
4542 4542 if (error == 0)
4543 4543 zc->zc_guid = (uint64_t)id;
4544 4544
4545 4545 return (error);
4546 4546 }
4547 4547
4548 4548 static int
4549 4549 zfs_ioc_clear_fault(zfs_cmd_t *zc)
4550 4550 {
4551 4551 return (zio_clear_fault((int)zc->zc_guid));
4552 4552 }
4553 4553
4554 4554 static int
4555 4555 zfs_ioc_inject_list_next(zfs_cmd_t *zc)
4556 4556 {
4557 4557 int id = (int)zc->zc_guid;
4558 4558 int error;
4559 4559
4560 4560 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name),
4561 4561 &zc->zc_inject_record);
4562 4562
4563 4563 zc->zc_guid = id;
4564 4564
4565 4565 return (error);
4566 4566 }
4567 4567
4568 4568 static int
4569 4569 zfs_ioc_error_log(zfs_cmd_t *zc)
4570 4570 {
4571 4571 spa_t *spa;
4572 4572 int error;
4573 4573 size_t count = (size_t)zc->zc_nvlist_dst_size;
4574 4574
4575 4575 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
4576 4576 return (error);
4577 4577
4578 4578 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst,
4579 4579 &count);
4580 4580 if (error == 0)
4581 4581 zc->zc_nvlist_dst_size = count;
4582 4582 else
4583 4583 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa);
4584 4584
4585 4585 spa_close(spa, FTAG);
4586 4586
4587 4587 return (error);
4588 4588 }
4589 4589
4590 4590 static int
4591 4591 zfs_ioc_clear(zfs_cmd_t *zc)
4592 4592 {
4593 4593 spa_t *spa;
4594 4594 vdev_t *vd;
4595 4595 int error;
4596 4596
4597 4597 /*
4598 4598 * On zpool clear we also fix up missing slogs
4599 4599 */
4600 4600 mutex_enter(&spa_namespace_lock);
4601 4601 spa = spa_lookup(zc->zc_name);
4602 4602 if (spa == NULL) {
4603 4603 mutex_exit(&spa_namespace_lock);
4604 4604 return (SET_ERROR(EIO));
4605 4605 }
4606 4606 if (spa_get_log_state(spa) == SPA_LOG_MISSING) {
4607 4607 /* we need to let spa_open/spa_load clear the chains */
4608 4608 spa_set_log_state(spa, SPA_LOG_CLEAR);
4609 4609 }
4610 4610 spa->spa_last_open_failed = 0;
4611 4611 mutex_exit(&spa_namespace_lock);
4612 4612
4613 4613 if (zc->zc_cookie & ZPOOL_NO_REWIND) {
4614 4614 error = spa_open(zc->zc_name, &spa, FTAG);
4615 4615 } else {
4616 4616 nvlist_t *policy;
4617 4617 nvlist_t *config = NULL;
4618 4618
4619 4619 if (zc->zc_nvlist_src == NULL)
4620 4620 return (SET_ERROR(EINVAL));
4621 4621
4622 4622 if ((error = get_nvlist(zc->zc_nvlist_src,
4623 4623 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) {
4624 4624 error = spa_open_rewind(zc->zc_name, &spa, FTAG,
4625 4625 policy, &config);
4626 4626 if (config != NULL) {
4627 4627 int err;
4628 4628
4629 4629 if ((err = put_nvlist(zc, config)) != 0)
4630 4630 error = err;
4631 4631 nvlist_free(config);
4632 4632 }
4633 4633 nvlist_free(policy);
4634 4634 }
4635 4635 }
4636 4636
4637 4637 if (error != 0)
4638 4638 return (error);
4639 4639
4640 4640 spa_vdev_state_enter(spa, SCL_NONE);
4641 4641
4642 4642 if (zc->zc_guid == 0) {
4643 4643 vd = NULL;
4644 4644 } else {
4645 4645 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE);
4646 4646 if (vd == NULL) {
4647 4647 (void) spa_vdev_state_exit(spa, NULL, ENODEV);
4648 4648 spa_close(spa, FTAG);
4649 4649 return (SET_ERROR(ENODEV));
4650 4650 }
4651 4651 }
4652 4652
4653 4653 vdev_clear(spa, vd);
4654 4654
4655 4655 (void) spa_vdev_state_exit(spa, NULL, 0);
4656 4656
4657 4657 /*
4658 4658 * Resume any suspended I/Os.
4659 4659 */
4660 4660 if (zio_resume(spa) != 0)
4661 4661 error = SET_ERROR(EIO);
4662 4662
4663 4663 spa_close(spa, FTAG);
4664 4664
4665 4665 return (error);
4666 4666 }
4667 4667
4668 4668 static int
4669 4669 zfs_ioc_pool_reopen(zfs_cmd_t *zc)
4670 4670 {
4671 4671 spa_t *spa;
4672 4672 int error;
4673 4673
4674 4674 error = spa_open(zc->zc_name, &spa, FTAG);
4675 4675 if (error != 0)
4676 4676 return (error);
4677 4677
4678 4678 spa_vdev_state_enter(spa, SCL_NONE);
4679 4679
4680 4680 /*
4681 4681 * If a resilver is already in progress then set the
4682 4682 * spa_scrub_reopen flag to B_TRUE so that we don't restart
4683 4683 * the scan as a side effect of the reopen. Otherwise, let
4684 4684 * vdev_open() decided if a resilver is required.
4685 4685 */
4686 4686 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool);
4687 4687 vdev_reopen(spa->spa_root_vdev);
4688 4688 spa->spa_scrub_reopen = B_FALSE;
4689 4689
4690 4690 (void) spa_vdev_state_exit(spa, NULL, 0);
4691 4691 spa_close(spa, FTAG);
4692 4692 return (0);
4693 4693 }
4694 4694 /*
4695 4695 * inputs:
4696 4696 * zc_name name of filesystem
4697 4697 * zc_value name of origin snapshot
4698 4698 *
4699 4699 * outputs:
4700 4700 * zc_string name of conflicting snapshot, if there is one
4701 4701 */
4702 4702 static int
4703 4703 zfs_ioc_promote(zfs_cmd_t *zc)
4704 4704 {
4705 4705 char *cp;
4706 4706
4707 4707 /*
4708 4708 * We don't need to unmount *all* the origin fs's snapshots, but
4709 4709 * it's easier.
4710 4710 */
4711 4711 cp = strchr(zc->zc_value, '@');
4712 4712 if (cp)
4713 4713 *cp = '\0';
4714 4714 (void) dmu_objset_find(zc->zc_value,
4715 4715 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS);
4716 4716 return (dsl_dataset_promote(zc->zc_name, zc->zc_string));
4717 4717 }
4718 4718
4719 4719 /*
4720 4720 * Retrieve a single {user|group}{used|quota}@... property.
4721 4721 *
4722 4722 * inputs:
4723 4723 * zc_name name of filesystem
4724 4724 * zc_objset_type zfs_userquota_prop_t
4725 4725 * zc_value domain name (eg. "S-1-234-567-89")
4726 4726 * zc_guid RID/UID/GID
4727 4727 *
4728 4728 * outputs:
4729 4729 * zc_cookie property value
4730 4730 */
4731 4731 static int
4732 4732 zfs_ioc_userspace_one(zfs_cmd_t *zc)
4733 4733 {
4734 4734 zfsvfs_t *zfsvfs;
4735 4735 int error;
4736 4736
4737 4737 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
4738 4738 return (SET_ERROR(EINVAL));
4739 4739
4740 4740 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE);
4741 4741 if (error != 0)
4742 4742 return (error);
4743 4743
4744 4744 error = zfs_userspace_one(zfsvfs,
4745 4745 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie);
4746 4746 zfsvfs_rele(zfsvfs, FTAG);
4747 4747
4748 4748 return (error);
4749 4749 }
4750 4750
4751 4751 /*
4752 4752 * inputs:
4753 4753 * zc_name name of filesystem
4754 4754 * zc_cookie zap cursor
4755 4755 * zc_objset_type zfs_userquota_prop_t
4756 4756 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist)
4757 4757 *
4758 4758 * outputs:
4759 4759 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t)
4760 4760 * zc_cookie zap cursor
4761 4761 */
4762 4762 static int
4763 4763 zfs_ioc_userspace_many(zfs_cmd_t *zc)
4764 4764 {
4765 4765 zfsvfs_t *zfsvfs;
4766 4766 int bufsize = zc->zc_nvlist_dst_size;
4767 4767
4768 4768 if (bufsize <= 0)
4769 4769 return (SET_ERROR(ENOMEM));
4770 4770
4771 4771 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE);
4772 4772 if (error != 0)
4773 4773 return (error);
4774 4774
4775 4775 void *buf = kmem_alloc(bufsize, KM_SLEEP);
4776 4776
4777 4777 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie,
4778 4778 buf, &zc->zc_nvlist_dst_size);
4779 4779
4780 4780 if (error == 0) {
4781 4781 error = xcopyout(buf,
4782 4782 (void *)(uintptr_t)zc->zc_nvlist_dst,
4783 4783 zc->zc_nvlist_dst_size);
4784 4784 }
4785 4785 kmem_free(buf, bufsize);
4786 4786 zfsvfs_rele(zfsvfs, FTAG);
4787 4787
4788 4788 return (error);
4789 4789 }
4790 4790
4791 4791 /*
4792 4792 * inputs:
4793 4793 * zc_name name of filesystem
4794 4794 *
4795 4795 * outputs:
4796 4796 * none
4797 4797 */
4798 4798 static int
4799 4799 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc)
4800 4800 {
4801 4801 objset_t *os;
4802 4802 int error = 0;
4803 4803 zfsvfs_t *zfsvfs;
4804 4804
4805 4805 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) {
4806 4806 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) {
4807 4807 /*
4808 4808 * If userused is not enabled, it may be because the
4809 4809 * objset needs to be closed & reopened (to grow the
4810 4810 * objset_phys_t). Suspend/resume the fs will do that.
4811 4811 */
4812 4812 error = zfs_suspend_fs(zfsvfs);
4813 4813 if (error == 0) {
4814 4814 dmu_objset_refresh_ownership(zfsvfs->z_os,
4815 4815 zfsvfs);
4816 4816 error = zfs_resume_fs(zfsvfs, zc->zc_name);
4817 4817 }
4818 4818 }
4819 4819 if (error == 0)
4820 4820 error = dmu_objset_userspace_upgrade(zfsvfs->z_os);
4821 4821 VFS_RELE(zfsvfs->z_vfs);
4822 4822 } else {
4823 4823 /* XXX kind of reading contents without owning */
4824 4824 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4825 4825 if (error != 0)
4826 4826 return (error);
4827 4827
4828 4828 error = dmu_objset_userspace_upgrade(os);
4829 4829 dmu_objset_rele(os, FTAG);
4830 4830 }
4831 4831
4832 4832 return (error);
4833 4833 }
4834 4834
4835 4835 /*
4836 4836 * We don't want to have a hard dependency
4837 4837 * against some special symbols in sharefs
4838 4838 * nfs, and smbsrv. Determine them if needed when
4839 4839 * the first file system is shared.
4840 4840 * Neither sharefs, nfs or smbsrv are unloadable modules.
4841 4841 */
4842 4842 int (*znfsexport_fs)(void *arg);
4843 4843 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t);
4844 4844 int (*zsmbexport_fs)(void *arg, boolean_t add_share);
4845 4845
4846 4846 int zfs_nfsshare_inited;
4847 4847 int zfs_smbshare_inited;
4848 4848
4849 4849 ddi_modhandle_t nfs_mod;
4850 4850 ddi_modhandle_t sharefs_mod;
4851 4851 ddi_modhandle_t smbsrv_mod;
4852 4852 kmutex_t zfs_share_lock;
4853 4853
4854 4854 static int
4855 4855 zfs_init_sharefs()
4856 4856 {
4857 4857 int error;
4858 4858
4859 4859 ASSERT(MUTEX_HELD(&zfs_share_lock));
4860 4860 /* Both NFS and SMB shares also require sharetab support. */
4861 4861 if (sharefs_mod == NULL && ((sharefs_mod =
4862 4862 ddi_modopen("fs/sharefs",
4863 4863 KRTLD_MODE_FIRST, &error)) == NULL)) {
4864 4864 return (SET_ERROR(ENOSYS));
4865 4865 }
4866 4866 if (zshare_fs == NULL && ((zshare_fs =
4867 4867 (int (*)(enum sharefs_sys_op, share_t *, uint32_t))
4868 4868 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) {
4869 4869 return (SET_ERROR(ENOSYS));
4870 4870 }
4871 4871 return (0);
4872 4872 }
4873 4873
4874 4874 static int
4875 4875 zfs_ioc_share(zfs_cmd_t *zc)
4876 4876 {
4877 4877 int error;
4878 4878 int opcode;
4879 4879
4880 4880 switch (zc->zc_share.z_sharetype) {
4881 4881 case ZFS_SHARE_NFS:
4882 4882 case ZFS_UNSHARE_NFS:
4883 4883 if (zfs_nfsshare_inited == 0) {
4884 4884 mutex_enter(&zfs_share_lock);
4885 4885 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs",
4886 4886 KRTLD_MODE_FIRST, &error)) == NULL)) {
4887 4887 mutex_exit(&zfs_share_lock);
4888 4888 return (SET_ERROR(ENOSYS));
4889 4889 }
4890 4890 if (znfsexport_fs == NULL &&
4891 4891 ((znfsexport_fs = (int (*)(void *))
4892 4892 ddi_modsym(nfs_mod,
4893 4893 "nfs_export", &error)) == NULL)) {
4894 4894 mutex_exit(&zfs_share_lock);
4895 4895 return (SET_ERROR(ENOSYS));
4896 4896 }
4897 4897 error = zfs_init_sharefs();
4898 4898 if (error != 0) {
4899 4899 mutex_exit(&zfs_share_lock);
4900 4900 return (SET_ERROR(ENOSYS));
4901 4901 }
4902 4902 zfs_nfsshare_inited = 1;
4903 4903 mutex_exit(&zfs_share_lock);
4904 4904 }
4905 4905 break;
4906 4906 case ZFS_SHARE_SMB:
4907 4907 case ZFS_UNSHARE_SMB:
4908 4908 if (zfs_smbshare_inited == 0) {
4909 4909 mutex_enter(&zfs_share_lock);
4910 4910 if (smbsrv_mod == NULL && ((smbsrv_mod =
4911 4911 ddi_modopen("drv/smbsrv",
4912 4912 KRTLD_MODE_FIRST, &error)) == NULL)) {
4913 4913 mutex_exit(&zfs_share_lock);
4914 4914 return (SET_ERROR(ENOSYS));
4915 4915 }
4916 4916 if (zsmbexport_fs == NULL && ((zsmbexport_fs =
4917 4917 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod,
4918 4918 "smb_server_share", &error)) == NULL)) {
4919 4919 mutex_exit(&zfs_share_lock);
4920 4920 return (SET_ERROR(ENOSYS));
4921 4921 }
4922 4922 error = zfs_init_sharefs();
4923 4923 if (error != 0) {
4924 4924 mutex_exit(&zfs_share_lock);
4925 4925 return (SET_ERROR(ENOSYS));
4926 4926 }
4927 4927 zfs_smbshare_inited = 1;
4928 4928 mutex_exit(&zfs_share_lock);
4929 4929 }
4930 4930 break;
4931 4931 default:
4932 4932 return (SET_ERROR(EINVAL));
4933 4933 }
4934 4934
4935 4935 switch (zc->zc_share.z_sharetype) {
4936 4936 case ZFS_SHARE_NFS:
4937 4937 case ZFS_UNSHARE_NFS:
4938 4938 if (error =
4939 4939 znfsexport_fs((void *)
4940 4940 (uintptr_t)zc->zc_share.z_exportdata))
4941 4941 return (error);
4942 4942 break;
4943 4943 case ZFS_SHARE_SMB:
4944 4944 case ZFS_UNSHARE_SMB:
4945 4945 if (error = zsmbexport_fs((void *)
4946 4946 (uintptr_t)zc->zc_share.z_exportdata,
4947 4947 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ?
4948 4948 B_TRUE: B_FALSE)) {
4949 4949 return (error);
4950 4950 }
4951 4951 break;
4952 4952 }
4953 4953
4954 4954 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS ||
4955 4955 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ?
4956 4956 SHAREFS_ADD : SHAREFS_REMOVE;
4957 4957
4958 4958 /*
4959 4959 * Add or remove share from sharetab
4960 4960 */
4961 4961 error = zshare_fs(opcode,
4962 4962 (void *)(uintptr_t)zc->zc_share.z_sharedata,
4963 4963 zc->zc_share.z_sharemax);
4964 4964
4965 4965 return (error);
4966 4966
4967 4967 }
4968 4968
4969 4969 ace_t full_access[] = {
4970 4970 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0}
4971 4971 };
4972 4972
4973 4973 /*
4974 4974 * inputs:
4975 4975 * zc_name name of containing filesystem
4976 4976 * zc_obj object # beyond which we want next in-use object #
4977 4977 *
4978 4978 * outputs:
4979 4979 * zc_obj next in-use object #
4980 4980 */
4981 4981 static int
4982 4982 zfs_ioc_next_obj(zfs_cmd_t *zc)
4983 4983 {
4984 4984 objset_t *os = NULL;
4985 4985 int error;
4986 4986
4987 4987 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4988 4988 if (error != 0)
4989 4989 return (error);
4990 4990
4991 4991 error = dmu_object_next(os, &zc->zc_obj, B_FALSE,
4992 4992 dsl_dataset_phys(os->os_dsl_dataset)->ds_prev_snap_txg);
4993 4993
4994 4994 dmu_objset_rele(os, FTAG);
4995 4995 return (error);
4996 4996 }
4997 4997
4998 4998 /*
4999 4999 * inputs:
5000 5000 * zc_name name of filesystem
5001 5001 * zc_value prefix name for snapshot
5002 5002 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
5003 5003 *
5004 5004 * outputs:
5005 5005 * zc_value short name of new snapshot
5006 5006 */
5007 5007 static int
5008 5008 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc)
5009 5009 {
5010 5010 char *snap_name;
5011 5011 char *hold_name;
5012 5012 int error;
5013 5013 minor_t minor;
5014 5014
5015 5015 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor);
5016 5016 if (error != 0)
5017 5017 return (error);
5018 5018
5019 5019 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value,
5020 5020 (u_longlong_t)ddi_get_lbolt64());
5021 5021 hold_name = kmem_asprintf("%%%s", zc->zc_value);
5022 5022
5023 5023 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor,
5024 5024 hold_name);
5025 5025 if (error == 0)
5026 5026 (void) strcpy(zc->zc_value, snap_name);
5027 5027 strfree(snap_name);
5028 5028 strfree(hold_name);
5029 5029 zfs_onexit_fd_rele(zc->zc_cleanup_fd);
5030 5030 return (error);
5031 5031 }
5032 5032
5033 5033 /*
5034 5034 * inputs:
5035 5035 * zc_name name of "to" snapshot
5036 5036 * zc_value name of "from" snapshot
5037 5037 * zc_cookie file descriptor to write diff data on
5038 5038 *
5039 5039 * outputs:
5040 5040 * dmu_diff_record_t's to the file descriptor
5041 5041 */
5042 5042 static int
5043 5043 zfs_ioc_diff(zfs_cmd_t *zc)
5044 5044 {
5045 5045 file_t *fp;
5046 5046 offset_t off;
5047 5047 int error;
5048 5048
5049 5049 fp = getf(zc->zc_cookie);
5050 5050 if (fp == NULL)
5051 5051 return (SET_ERROR(EBADF));
5052 5052
5053 5053 off = fp->f_offset;
5054 5054
5055 5055 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off);
5056 5056
5057 5057 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
5058 5058 fp->f_offset = off;
5059 5059 releasef(zc->zc_cookie);
5060 5060
5061 5061 return (error);
5062 5062 }
5063 5063
5064 5064 /*
5065 5065 * Remove all ACL files in shares dir
5066 5066 */
5067 5067 static int
5068 5068 zfs_smb_acl_purge(znode_t *dzp)
5069 5069 {
5070 5070 zap_cursor_t zc;
5071 5071 zap_attribute_t zap;
5072 5072 zfsvfs_t *zfsvfs = dzp->z_zfsvfs;
5073 5073 int error;
5074 5074
5075 5075 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id);
5076 5076 (error = zap_cursor_retrieve(&zc, &zap)) == 0;
5077 5077 zap_cursor_advance(&zc)) {
5078 5078 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred,
5079 5079 NULL, 0)) != 0)
5080 5080 break;
5081 5081 }
5082 5082 zap_cursor_fini(&zc);
5083 5083 return (error);
5084 5084 }
5085 5085
5086 5086 static int
5087 5087 zfs_ioc_smb_acl(zfs_cmd_t *zc)
5088 5088 {
5089 5089 vnode_t *vp;
5090 5090 znode_t *dzp;
5091 5091 vnode_t *resourcevp = NULL;
5092 5092 znode_t *sharedir;
5093 5093 zfsvfs_t *zfsvfs;
5094 5094 nvlist_t *nvlist;
5095 5095 char *src, *target;
5096 5096 vattr_t vattr;
5097 5097 vsecattr_t vsec;
5098 5098 int error = 0;
5099 5099
5100 5100 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
5101 5101 NO_FOLLOW, NULL, &vp)) != 0)
5102 5102 return (error);
5103 5103
5104 5104 /* Now make sure mntpnt and dataset are ZFS */
5105 5105
5106 5106 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
5107 5107 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
5108 5108 zc->zc_name) != 0)) {
5109 5109 VN_RELE(vp);
5110 5110 return (SET_ERROR(EINVAL));
5111 5111 }
5112 5112
5113 5113 dzp = VTOZ(vp);
5114 5114 zfsvfs = dzp->z_zfsvfs;
5115 5115 ZFS_ENTER(zfsvfs);
5116 5116
5117 5117 /*
5118 5118 * Create share dir if its missing.
5119 5119 */
5120 5120 mutex_enter(&zfsvfs->z_lock);
5121 5121 if (zfsvfs->z_shares_dir == 0) {
5122 5122 dmu_tx_t *tx;
5123 5123
5124 5124 tx = dmu_tx_create(zfsvfs->z_os);
5125 5125 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE,
5126 5126 ZFS_SHARES_DIR);
5127 5127 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
5128 5128 error = dmu_tx_assign(tx, TXG_WAIT);
5129 5129 if (error != 0) {
5130 5130 dmu_tx_abort(tx);
5131 5131 } else {
5132 5132 error = zfs_create_share_dir(zfsvfs, tx);
5133 5133 dmu_tx_commit(tx);
5134 5134 }
5135 5135 if (error != 0) {
5136 5136 mutex_exit(&zfsvfs->z_lock);
5137 5137 VN_RELE(vp);
5138 5138 ZFS_EXIT(zfsvfs);
5139 5139 return (error);
5140 5140 }
5141 5141 }
5142 5142 mutex_exit(&zfsvfs->z_lock);
5143 5143
5144 5144 ASSERT(zfsvfs->z_shares_dir);
5145 5145 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) {
5146 5146 VN_RELE(vp);
5147 5147 ZFS_EXIT(zfsvfs);
5148 5148 return (error);
5149 5149 }
5150 5150
5151 5151 switch (zc->zc_cookie) {
5152 5152 case ZFS_SMB_ACL_ADD:
5153 5153 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE;
5154 5154 vattr.va_type = VREG;
5155 5155 vattr.va_mode = S_IFREG|0777;
5156 5156 vattr.va_uid = 0;
5157 5157 vattr.va_gid = 0;
5158 5158
5159 5159 vsec.vsa_mask = VSA_ACE;
5160 5160 vsec.vsa_aclentp = &full_access;
5161 5161 vsec.vsa_aclentsz = sizeof (full_access);
5162 5162 vsec.vsa_aclcnt = 1;
5163 5163
5164 5164 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string,
5165 5165 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec);
5166 5166 if (resourcevp)
5167 5167 VN_RELE(resourcevp);
5168 5168 break;
5169 5169
5170 5170 case ZFS_SMB_ACL_REMOVE:
5171 5171 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred,
5172 5172 NULL, 0);
5173 5173 break;
5174 5174
5175 5175 case ZFS_SMB_ACL_RENAME:
5176 5176 if ((error = get_nvlist(zc->zc_nvlist_src,
5177 5177 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) {
5178 5178 VN_RELE(vp);
5179 5179 VN_RELE(ZTOV(sharedir));
5180 5180 ZFS_EXIT(zfsvfs);
5181 5181 return (error);
5182 5182 }
5183 5183 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) ||
5184 5184 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET,
5185 5185 &target)) {
5186 5186 VN_RELE(vp);
5187 5187 VN_RELE(ZTOV(sharedir));
5188 5188 ZFS_EXIT(zfsvfs);
5189 5189 nvlist_free(nvlist);
5190 5190 return (error);
5191 5191 }
5192 5192 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target,
5193 5193 kcred, NULL, 0);
5194 5194 nvlist_free(nvlist);
5195 5195 break;
5196 5196
5197 5197 case ZFS_SMB_ACL_PURGE:
5198 5198 error = zfs_smb_acl_purge(sharedir);
5199 5199 break;
5200 5200
5201 5201 default:
5202 5202 error = SET_ERROR(EINVAL);
5203 5203 break;
5204 5204 }
5205 5205
5206 5206 VN_RELE(vp);
5207 5207 VN_RELE(ZTOV(sharedir));
5208 5208
5209 5209 ZFS_EXIT(zfsvfs);
5210 5210
5211 5211 return (error);
5212 5212 }
5213 5213
5214 5214 /*
5215 5215 * innvl: {
5216 5216 * "holds" -> { snapname -> holdname (string), ... }
5217 5217 * (optional) "cleanup_fd" -> fd (int32)
5218 5218 * }
5219 5219 *
5220 5220 * outnvl: {
5221 5221 * snapname -> error value (int32)
5222 5222 * ...
5223 5223 * }
5224 5224 */
5225 5225 /* ARGSUSED */
5226 5226 static int
5227 5227 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist)
5228 5228 {
5229 5229 nvpair_t *pair;
5230 5230 nvlist_t *holds;
5231 5231 int cleanup_fd = -1;
5232 5232 int error;
5233 5233 minor_t minor = 0;
5234 5234
5235 5235 error = nvlist_lookup_nvlist(args, "holds", &holds);
5236 5236 if (error != 0)
5237 5237 return (SET_ERROR(EINVAL));
5238 5238
5239 5239 /* make sure the user didn't pass us any invalid (empty) tags */
5240 5240 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
5241 5241 pair = nvlist_next_nvpair(holds, pair)) {
5242 5242 char *htag;
5243 5243
5244 5244 error = nvpair_value_string(pair, &htag);
5245 5245 if (error != 0)
5246 5246 return (SET_ERROR(error));
5247 5247
5248 5248 if (strlen(htag) == 0)
5249 5249 return (SET_ERROR(EINVAL));
5250 5250 }
5251 5251
5252 5252 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) {
5253 5253 error = zfs_onexit_fd_hold(cleanup_fd, &minor);
5254 5254 if (error != 0)
5255 5255 return (error);
5256 5256 }
5257 5257
5258 5258 error = dsl_dataset_user_hold(holds, minor, errlist);
5259 5259 if (minor != 0)
5260 5260 zfs_onexit_fd_rele(cleanup_fd);
5261 5261 return (error);
5262 5262 }
5263 5263
5264 5264 /*
5265 5265 * innvl is not used.
5266 5266 *
5267 5267 * outnvl: {
5268 5268 * holdname -> time added (uint64 seconds since epoch)
5269 5269 * ...
5270 5270 * }
5271 5271 */
5272 5272 /* ARGSUSED */
5273 5273 static int
5274 5274 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl)
5275 5275 {
5276 5276 return (dsl_dataset_get_holds(snapname, outnvl));
5277 5277 }
5278 5278
5279 5279 /*
5280 5280 * innvl: {
5281 5281 * snapname -> { holdname, ... }
5282 5282 * ...
5283 5283 * }
5284 5284 *
5285 5285 * outnvl: {
5286 5286 * snapname -> error value (int32)
5287 5287 * ...
5288 5288 * }
5289 5289 */
5290 5290 /* ARGSUSED */
5291 5291 static int
5292 5292 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist)
5293 5293 {
5294 5294 return (dsl_dataset_user_release(holds, errlist));
5295 5295 }
5296 5296
5297 5297 /*
5298 5298 * inputs:
5299 5299 * zc_name name of new filesystem or snapshot
5300 5300 * zc_value full name of old snapshot
5301 5301 *
5302 5302 * outputs:
5303 5303 * zc_cookie space in bytes
5304 5304 * zc_objset_type compressed space in bytes
5305 5305 * zc_perm_action uncompressed space in bytes
5306 5306 */
5307 5307 static int
5308 5308 zfs_ioc_space_written(zfs_cmd_t *zc)
5309 5309 {
5310 5310 int error;
5311 5311 dsl_pool_t *dp;
5312 5312 dsl_dataset_t *new, *old;
5313 5313
5314 5314 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
5315 5315 if (error != 0)
5316 5316 return (error);
5317 5317 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new);
5318 5318 if (error != 0) {
5319 5319 dsl_pool_rele(dp, FTAG);
5320 5320 return (error);
5321 5321 }
5322 5322 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old);
5323 5323 if (error != 0) {
5324 5324 dsl_dataset_rele(new, FTAG);
5325 5325 dsl_pool_rele(dp, FTAG);
5326 5326 return (error);
5327 5327 }
5328 5328
5329 5329 error = dsl_dataset_space_written(old, new, &zc->zc_cookie,
5330 5330 &zc->zc_objset_type, &zc->zc_perm_action);
5331 5331 dsl_dataset_rele(old, FTAG);
5332 5332 dsl_dataset_rele(new, FTAG);
5333 5333 dsl_pool_rele(dp, FTAG);
5334 5334 return (error);
5335 5335 }
5336 5336
5337 5337 /*
5338 5338 * innvl: {
5339 5339 * "firstsnap" -> snapshot name
5340 5340 * }
5341 5341 *
5342 5342 * outnvl: {
5343 5343 * "used" -> space in bytes
5344 5344 * "compressed" -> compressed space in bytes
5345 5345 * "uncompressed" -> uncompressed space in bytes
5346 5346 * }
5347 5347 */
5348 5348 static int
5349 5349 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl)
5350 5350 {
5351 5351 int error;
5352 5352 dsl_pool_t *dp;
5353 5353 dsl_dataset_t *new, *old;
5354 5354 char *firstsnap;
5355 5355 uint64_t used, comp, uncomp;
5356 5356
5357 5357 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0)
5358 5358 return (SET_ERROR(EINVAL));
5359 5359
5360 5360 error = dsl_pool_hold(lastsnap, FTAG, &dp);
5361 5361 if (error != 0)
5362 5362 return (error);
5363 5363
5364 5364 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new);
5365 5365 if (error == 0 && !new->ds_is_snapshot) {
5366 5366 dsl_dataset_rele(new, FTAG);
5367 5367 error = SET_ERROR(EINVAL);
5368 5368 }
5369 5369 if (error != 0) {
5370 5370 dsl_pool_rele(dp, FTAG);
5371 5371 return (error);
5372 5372 }
5373 5373 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old);
5374 5374 if (error == 0 && !old->ds_is_snapshot) {
5375 5375 dsl_dataset_rele(old, FTAG);
5376 5376 error = SET_ERROR(EINVAL);
5377 5377 }
5378 5378 if (error != 0) {
5379 5379 dsl_dataset_rele(new, FTAG);
5380 5380 dsl_pool_rele(dp, FTAG);
5381 5381 return (error);
5382 5382 }
5383 5383
5384 5384 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp);
5385 5385 dsl_dataset_rele(old, FTAG);
5386 5386 dsl_dataset_rele(new, FTAG);
5387 5387 dsl_pool_rele(dp, FTAG);
5388 5388 fnvlist_add_uint64(outnvl, "used", used);
5389 5389 fnvlist_add_uint64(outnvl, "compressed", comp);
5390 5390 fnvlist_add_uint64(outnvl, "uncompressed", uncomp);
5391 5391 return (error);
5392 5392 }
5393 5393
5394 5394 /*
5395 5395 * innvl: {
5396 5396 * "fd" -> file descriptor to write stream to (int32)
5397 5397 * (optional) "fromsnap" -> full snap name to send an incremental from
5398 5398 * (optional) "largeblockok" -> (value ignored)
5399 5399 * indicates that blocks > 128KB are permitted
5400 5400 * (optional) "embedok" -> (value ignored)
5401 5401 * presence indicates DRR_WRITE_EMBEDDED records are permitted
5402 5402 * (optional) "resume_object" and "resume_offset" -> (uint64)
5403 5403 * if present, resume send stream from specified object and offset.
5404 5404 * }
5405 5405 *
5406 5406 * outnvl is unused
5407 5407 */
5408 5408 /* ARGSUSED */
5409 5409 static int
5410 5410 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl)
5411 5411 {
5412 5412 int error;
5413 5413 offset_t off;
5414 5414 char *fromname = NULL;
5415 5415 int fd;
5416 5416 boolean_t largeblockok;
5417 5417 boolean_t embedok;
5418 5418 uint64_t resumeobj = 0;
5419 5419 uint64_t resumeoff = 0;
5420 5420
5421 5421 error = nvlist_lookup_int32(innvl, "fd", &fd);
5422 5422 if (error != 0)
5423 5423 return (SET_ERROR(EINVAL));
5424 5424
5425 5425 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname);
5426 5426
5427 5427 largeblockok = nvlist_exists(innvl, "largeblockok");
5428 5428 embedok = nvlist_exists(innvl, "embedok");
5429 5429
5430 5430 (void) nvlist_lookup_uint64(innvl, "resume_object", &resumeobj);
5431 5431 (void) nvlist_lookup_uint64(innvl, "resume_offset", &resumeoff);
5432 5432
5433 5433 file_t *fp = getf(fd);
5434 5434 if (fp == NULL)
5435 5435 return (SET_ERROR(EBADF));
5436 5436
5437 5437 off = fp->f_offset;
5438 5438 error = dmu_send(snapname, fromname, embedok, largeblockok, fd,
5439 5439 resumeobj, resumeoff, fp->f_vnode, &off);
5440 5440
5441 5441 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
5442 5442 fp->f_offset = off;
5443 5443 releasef(fd);
5444 5444 return (error);
5445 5445 }
5446 5446
5447 5447 /*
5448 5448 * Determine approximately how large a zfs send stream will be -- the number
5449 5449 * of bytes that will be written to the fd supplied to zfs_ioc_send_new().
5450 5450 *
5451 5451 * innvl: {
5452 5452 * (optional) "from" -> full snap or bookmark name to send an incremental
5453 5453 * from
5454 5454 * }
5455 5455 *
5456 5456 * outnvl: {
5457 5457 * "space" -> bytes of space (uint64)
5458 5458 * }
5459 5459 */
5460 5460 static int
5461 5461 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl)
5462 5462 {
5463 5463 dsl_pool_t *dp;
5464 5464 dsl_dataset_t *tosnap;
5465 5465 int error;
5466 5466 char *fromname;
5467 5467 uint64_t space;
5468 5468
5469 5469 error = dsl_pool_hold(snapname, FTAG, &dp);
5470 5470 if (error != 0)
5471 5471 return (error);
5472 5472
5473 5473 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap);
5474 5474 if (error != 0) {
5475 5475 dsl_pool_rele(dp, FTAG);
5476 5476 return (error);
5477 5477 }
5478 5478
5479 5479 error = nvlist_lookup_string(innvl, "from", &fromname);
5480 5480 if (error == 0) {
5481 5481 if (strchr(fromname, '@') != NULL) {
5482 5482 /*
5483 5483 * If from is a snapshot, hold it and use the more
5484 5484 * efficient dmu_send_estimate to estimate send space
5485 5485 * size using deadlists.
5486 5486 */
5487 5487 dsl_dataset_t *fromsnap;
5488 5488 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap);
5489 5489 if (error != 0)
5490 5490 goto out;
5491 5491 error = dmu_send_estimate(tosnap, fromsnap, &space);
5492 5492 dsl_dataset_rele(fromsnap, FTAG);
5493 5493 } else if (strchr(fromname, '#') != NULL) {
5494 5494 /*
5495 5495 * If from is a bookmark, fetch the creation TXG of the
5496 5496 * snapshot it was created from and use that to find
5497 5497 * blocks that were born after it.
5498 5498 */
5499 5499 zfs_bookmark_phys_t frombm;
5500 5500
5501 5501 error = dsl_bookmark_lookup(dp, fromname, tosnap,
5502 5502 &frombm);
5503 5503 if (error != 0)
5504 5504 goto out;
5505 5505 error = dmu_send_estimate_from_txg(tosnap,
5506 5506 frombm.zbm_creation_txg, &space);
5507 5507 } else {
5508 5508 /*
5509 5509 * from is not properly formatted as a snapshot or
5510 5510 * bookmark
5511 5511 */
5512 5512 error = SET_ERROR(EINVAL);
5513 5513 goto out;
5514 5514 }
5515 5515 } else {
5516 5516 // If estimating the size of a full send, use dmu_send_estimate
5517 5517 error = dmu_send_estimate(tosnap, NULL, &space);
5518 5518 }
5519 5519
5520 5520 fnvlist_add_uint64(outnvl, "space", space);
5521 5521
5522 5522 out:
5523 5523 dsl_dataset_rele(tosnap, FTAG);
5524 5524 dsl_pool_rele(dp, FTAG);
5525 5525 return (error);
5526 5526 }
5527 5527
5528 5528 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST];
5529 5529
5530 5530 static void
5531 5531 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5532 5532 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
5533 5533 boolean_t log_history, zfs_ioc_poolcheck_t pool_check)
5534 5534 {
5535 5535 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST];
5536 5536
5537 5537 ASSERT3U(ioc, >=, ZFS_IOC_FIRST);
5538 5538 ASSERT3U(ioc, <, ZFS_IOC_LAST);
5539 5539 ASSERT3P(vec->zvec_legacy_func, ==, NULL);
5540 5540 ASSERT3P(vec->zvec_func, ==, NULL);
5541 5541
5542 5542 vec->zvec_legacy_func = func;
5543 5543 vec->zvec_secpolicy = secpolicy;
5544 5544 vec->zvec_namecheck = namecheck;
5545 5545 vec->zvec_allow_log = log_history;
5546 5546 vec->zvec_pool_check = pool_check;
5547 5547 }
5548 5548
5549 5549 /*
5550 5550 * See the block comment at the beginning of this file for details on
5551 5551 * each argument to this function.
5552 5552 */
5553 5553 static void
5554 5554 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func,
5555 5555 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
5556 5556 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist,
5557 5557 boolean_t allow_log)
5558 5558 {
5559 5559 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST];
5560 5560
5561 5561 ASSERT3U(ioc, >=, ZFS_IOC_FIRST);
5562 5562 ASSERT3U(ioc, <, ZFS_IOC_LAST);
5563 5563 ASSERT3P(vec->zvec_legacy_func, ==, NULL);
5564 5564 ASSERT3P(vec->zvec_func, ==, NULL);
5565 5565
5566 5566 /* if we are logging, the name must be valid */
5567 5567 ASSERT(!allow_log || namecheck != NO_NAME);
5568 5568
5569 5569 vec->zvec_name = name;
5570 5570 vec->zvec_func = func;
5571 5571 vec->zvec_secpolicy = secpolicy;
5572 5572 vec->zvec_namecheck = namecheck;
5573 5573 vec->zvec_pool_check = pool_check;
5574 5574 vec->zvec_smush_outnvlist = smush_outnvlist;
5575 5575 vec->zvec_allow_log = allow_log;
5576 5576 }
5577 5577
5578 5578 static void
5579 5579 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5580 5580 zfs_secpolicy_func_t *secpolicy, boolean_t log_history,
5581 5581 zfs_ioc_poolcheck_t pool_check)
5582 5582 {
5583 5583 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5584 5584 POOL_NAME, log_history, pool_check);
5585 5585 }
5586 5586
5587 5587 static void
5588 5588 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5589 5589 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check)
5590 5590 {
5591 5591 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5592 5592 DATASET_NAME, B_FALSE, pool_check);
5593 5593 }
5594 5594
5595 5595 static void
5596 5596 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func)
5597 5597 {
5598 5598 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config,
5599 5599 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5600 5600 }
5601 5601
5602 5602 static void
5603 5603 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5604 5604 zfs_secpolicy_func_t *secpolicy)
5605 5605 {
5606 5606 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5607 5607 NO_NAME, B_FALSE, POOL_CHECK_NONE);
5608 5608 }
5609 5609
5610 5610 static void
5611 5611 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc,
5612 5612 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy)
5613 5613 {
5614 5614 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5615 5615 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED);
5616 5616 }
5617 5617
5618 5618 static void
5619 5619 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func)
5620 5620 {
5621 5621 zfs_ioctl_register_dataset_read_secpolicy(ioc, func,
5622 5622 zfs_secpolicy_read);
5623 5623 }
5624 5624
5625 5625 static void
5626 5626 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5627 5627 zfs_secpolicy_func_t *secpolicy)
5628 5628 {
5629 5629 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5630 5630 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5631 5631 }
5632 5632
5633 5633 static void
5634 5634 zfs_ioctl_init(void)
5635 5635 {
5636 5636 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT,
5637 5637 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME,
5638 5638 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5639 5639
5640 5640 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY,
5641 5641 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME,
5642 5642 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE);
5643 5643
5644 5644 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS,
5645 5645 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME,
5646 5646 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5647 5647
5648 5648 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW,
5649 5649 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME,
5650 5650 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5651 5651
5652 5652 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE,
5653 5653 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME,
5654 5654 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5655 5655
5656 5656 zfs_ioctl_register("create", ZFS_IOC_CREATE,
5657 5657 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME,
5658 5658 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5659 5659
5660 5660 zfs_ioctl_register("clone", ZFS_IOC_CLONE,
5661 5661 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME,
5662 5662 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5663 5663
5664 5664 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS,
5665 5665 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME,
5666 5666 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5667 5667
5668 5668 zfs_ioctl_register("hold", ZFS_IOC_HOLD,
5669 5669 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME,
5670 5670 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5671 5671 zfs_ioctl_register("release", ZFS_IOC_RELEASE,
5672 5672 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME,
5673 5673 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5674 5674
5675 5675 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS,
5676 5676 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME,
5677 5677 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5678 5678
5679 5679 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK,
5680 5680 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME,
5681 5681 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE);
5682 5682
5683 5683 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK,
5684 5684 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME,
5685 5685 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5686 5686
5687 5687 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS,
5688 5688 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME,
5689 5689 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5690 5690
5691 5691 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS,
5692 5692 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks,
5693 5693 POOL_NAME,
5694 5694 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5695 5695
5696 5696 /* IOCTLS that use the legacy function signature */
5697 5697
5698 5698 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze,
5699 5699 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY);
5700 5700
5701 5701 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create,
5702 5702 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5703 5703 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN,
5704 5704 zfs_ioc_pool_scan);
5705 5705 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE,
5706 5706 zfs_ioc_pool_upgrade);
5707 5707 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD,
5708 5708 zfs_ioc_vdev_add);
5709 5709 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE,
5710 5710 zfs_ioc_vdev_remove);
5711 5711 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE,
5712 5712 zfs_ioc_vdev_set_state);
5713 5713 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH,
5714 5714 zfs_ioc_vdev_attach);
5715 5715 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH,
5716 5716 zfs_ioc_vdev_detach);
5717 5717 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH,
5718 5718 zfs_ioc_vdev_setpath);
5719 5719 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU,
5720 5720 zfs_ioc_vdev_setfru);
5721 5721 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS,
5722 5722 zfs_ioc_pool_set_props);
5723 5723 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT,
5724 5724 zfs_ioc_vdev_split);
5725 5725 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID,
5726 5726 zfs_ioc_pool_reguid);
5727 5727
5728 5728 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS,
5729 5729 zfs_ioc_pool_configs, zfs_secpolicy_none);
5730 5730 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT,
5731 5731 zfs_ioc_pool_tryimport, zfs_secpolicy_config);
5732 5732 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT,
5733 5733 zfs_ioc_inject_fault, zfs_secpolicy_inject);
5734 5734 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT,
5735 5735 zfs_ioc_clear_fault, zfs_secpolicy_inject);
5736 5736 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT,
5737 5737 zfs_ioc_inject_list_next, zfs_secpolicy_inject);
5738 5738
5739 5739 /*
5740 5740 * pool destroy, and export don't log the history as part of
5741 5741 * zfsdev_ioctl, but rather zfs_ioc_pool_export
5742 5742 * does the logging of those commands.
5743 5743 */
5744 5744 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy,
5745 5745 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE);
5746 5746 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export,
5747 5747 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE);
5748 5748
5749 5749 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats,
5750 5750 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE);
5751 5751 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props,
5752 5752 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE);
5753 5753
5754 5754 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log,
5755 5755 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED);
5756 5756 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME,
5757 5757 zfs_ioc_dsobj_to_dsname,
5758 5758 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED);
5759 5759 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY,
5760 5760 zfs_ioc_pool_get_history,
5761 5761 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED);
5762 5762
5763 5763 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import,
5764 5764 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5765 5765
5766 5766 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear,
5767 5767 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5768 5768 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen,
5769 5769 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED);
5770 5770
5771 5771 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN,
5772 5772 zfs_ioc_space_written);
5773 5773 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS,
5774 5774 zfs_ioc_objset_recvd_props);
5775 5775 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ,
5776 5776 zfs_ioc_next_obj);
5777 5777 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL,
5778 5778 zfs_ioc_get_fsacl);
5779 5779 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS,
5780 5780 zfs_ioc_objset_stats);
5781 5781 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS,
5782 5782 zfs_ioc_objset_zplprops);
5783 5783 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT,
5784 5784 zfs_ioc_dataset_list_next);
5785 5785 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT,
5786 5786 zfs_ioc_snapshot_list_next);
5787 5787 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS,
5788 5788 zfs_ioc_send_progress);
5789 5789
5790 5790 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF,
5791 5791 zfs_ioc_diff, zfs_secpolicy_diff);
5792 5792 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS,
5793 5793 zfs_ioc_obj_to_stats, zfs_secpolicy_diff);
5794 5794 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH,
5795 5795 zfs_ioc_obj_to_path, zfs_secpolicy_diff);
5796 5796 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE,
5797 5797 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one);
5798 5798 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY,
5799 5799 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many);
5800 5800 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND,
5801 5801 zfs_ioc_send, zfs_secpolicy_send);
5802 5802
5803 5803 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop,
5804 5804 zfs_secpolicy_none);
5805 5805 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy,
5806 5806 zfs_secpolicy_destroy);
5807 5807 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename,
5808 5808 zfs_secpolicy_rename);
5809 5809 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv,
5810 5810 zfs_secpolicy_recv);
5811 5811 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote,
5812 5812 zfs_secpolicy_promote);
5813 5813 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP,
5814 5814 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop);
5815 5815 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl,
5816 5816 zfs_secpolicy_set_fsacl);
5817 5817
5818 5818 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share,
5819 5819 zfs_secpolicy_share, POOL_CHECK_NONE);
5820 5820 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl,
5821 5821 zfs_secpolicy_smb_acl, POOL_CHECK_NONE);
5822 5822 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE,
5823 5823 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade,
5824 5824 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5825 5825 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT,
5826 5826 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot,
5827 5827 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5828 5828 }
5829 5829
5830 5830 int
5831 5831 pool_status_check(const char *name, zfs_ioc_namecheck_t type,
5832 5832 zfs_ioc_poolcheck_t check)
5833 5833 {
5834 5834 spa_t *spa;
5835 5835 int error;
5836 5836
5837 5837 ASSERT(type == POOL_NAME || type == DATASET_NAME);
5838 5838
5839 5839 if (check & POOL_CHECK_NONE)
5840 5840 return (0);
5841 5841
5842 5842 error = spa_open(name, &spa, FTAG);
5843 5843 if (error == 0) {
5844 5844 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa))
5845 5845 error = SET_ERROR(EAGAIN);
5846 5846 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa))
5847 5847 error = SET_ERROR(EROFS);
5848 5848 spa_close(spa, FTAG);
5849 5849 }
5850 5850 return (error);
5851 5851 }
5852 5852
5853 5853 /*
5854 5854 * Find a free minor number.
5855 5855 */
5856 5856 minor_t
5857 5857 zfsdev_minor_alloc(void)
5858 5858 {
5859 5859 static minor_t last_minor;
5860 5860 minor_t m;
5861 5861
5862 5862 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5863 5863
5864 5864 for (m = last_minor + 1; m != last_minor; m++) {
5865 5865 if (m > ZFSDEV_MAX_MINOR)
5866 5866 m = 1;
5867 5867 if (ddi_get_soft_state(zfsdev_state, m) == NULL) {
5868 5868 last_minor = m;
5869 5869 return (m);
5870 5870 }
5871 5871 }
5872 5872
5873 5873 return (0);
5874 5874 }
5875 5875
5876 5876 static int
5877 5877 zfs_ctldev_init(dev_t *devp)
5878 5878 {
5879 5879 minor_t minor;
5880 5880 zfs_soft_state_t *zs;
5881 5881
5882 5882 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5883 5883 ASSERT(getminor(*devp) == 0);
5884 5884
5885 5885 minor = zfsdev_minor_alloc();
5886 5886 if (minor == 0)
5887 5887 return (SET_ERROR(ENXIO));
5888 5888
5889 5889 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS)
5890 5890 return (SET_ERROR(EAGAIN));
5891 5891
5892 5892 *devp = makedevice(getemajor(*devp), minor);
5893 5893
5894 5894 zs = ddi_get_soft_state(zfsdev_state, minor);
5895 5895 zs->zss_type = ZSST_CTLDEV;
5896 5896 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data);
5897 5897
5898 5898 return (0);
5899 5899 }
5900 5900
5901 5901 static void
5902 5902 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor)
5903 5903 {
5904 5904 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5905 5905
5906 5906 zfs_onexit_destroy(zo);
5907 5907 ddi_soft_state_free(zfsdev_state, minor);
5908 5908 }
5909 5909
5910 5910 void *
5911 5911 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which)
5912 5912 {
5913 5913 zfs_soft_state_t *zp;
5914 5914
5915 5915 zp = ddi_get_soft_state(zfsdev_state, minor);
5916 5916 if (zp == NULL || zp->zss_type != which)
5917 5917 return (NULL);
5918 5918
5919 5919 return (zp->zss_data);
5920 5920 }
5921 5921
5922 5922 static int
5923 5923 zfsdev_open(dev_t *devp, int flag, int otyp, cred_t *cr)
5924 5924 {
5925 5925 int error = 0;
5926 5926
5927 5927 if (getminor(*devp) != 0)
5928 5928 return (zvol_open(devp, flag, otyp, cr));
5929 5929
5930 5930 /* This is the control device. Allocate a new minor if requested. */
5931 5931 if (flag & FEXCL) {
5932 5932 mutex_enter(&zfsdev_state_lock);
5933 5933 error = zfs_ctldev_init(devp);
5934 5934 mutex_exit(&zfsdev_state_lock);
5935 5935 }
5936 5936
5937 5937 return (error);
5938 5938 }
5939 5939
5940 5940 static int
5941 5941 zfsdev_close(dev_t dev, int flag, int otyp, cred_t *cr)
5942 5942 {
5943 5943 zfs_onexit_t *zo;
5944 5944 minor_t minor = getminor(dev);
5945 5945
5946 5946 if (minor == 0)
5947 5947 return (0);
5948 5948
5949 5949 mutex_enter(&zfsdev_state_lock);
5950 5950 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV);
5951 5951 if (zo == NULL) {
5952 5952 mutex_exit(&zfsdev_state_lock);
5953 5953 return (zvol_close(dev, flag, otyp, cr));
5954 5954 }
5955 5955 zfs_ctldev_destroy(zo, minor);
5956 5956 mutex_exit(&zfsdev_state_lock);
5957 5957
5958 5958 return (0);
5959 5959 }
5960 5960
5961 5961 static int
5962 5962 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp)
5963 5963 {
5964 5964 zfs_cmd_t *zc;
5965 5965 uint_t vecnum;
5966 5966 int error, rc, len;
5967 5967 minor_t minor = getminor(dev);
5968 5968 const zfs_ioc_vec_t *vec;
5969 5969 char *saved_poolname = NULL;
5970 5970 nvlist_t *innvl = NULL;
5971 5971
5972 5972 if (minor != 0 &&
5973 5973 zfsdev_get_soft_state(minor, ZSST_CTLDEV) == NULL)
5974 5974 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp));
5975 5975
5976 5976 vecnum = cmd - ZFS_IOC_FIRST;
5977 5977 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip));
5978 5978
5979 5979 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
5980 5980 return (SET_ERROR(EINVAL));
5981 5981 vec = &zfs_ioc_vec[vecnum];
5982 5982
5983 5983 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
5984 5984
5985 5985 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag);
5986 5986 if (error != 0) {
5987 5987 error = SET_ERROR(EFAULT);
5988 5988 goto out;
5989 5989 }
5990 5990
5991 5991 zc->zc_iflags = flag & FKIOCTL;
5992 5992 if (zc->zc_nvlist_src_size != 0) {
5993 5993 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
5994 5994 zc->zc_iflags, &innvl);
5995 5995 if (error != 0)
5996 5996 goto out;
5997 5997 }
5998 5998
5999 5999 /*
6000 6000 * Ensure that all pool/dataset names are valid before we pass down to
6001 6001 * the lower layers.
6002 6002 */
6003 6003 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
6004 6004 switch (vec->zvec_namecheck) {
6005 6005 case POOL_NAME:
6006 6006 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
6007 6007 error = SET_ERROR(EINVAL);
6008 6008 else
6009 6009 error = pool_status_check(zc->zc_name,
6010 6010 vec->zvec_namecheck, vec->zvec_pool_check);
6011 6011 break;
6012 6012
6013 6013 case DATASET_NAME:
6014 6014 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
6015 6015 error = SET_ERROR(EINVAL);
6016 6016 else
6017 6017 error = pool_status_check(zc->zc_name,
6018 6018 vec->zvec_namecheck, vec->zvec_pool_check);
6019 6019 break;
6020 6020
6021 6021 case NO_NAME:
6022 6022 break;
6023 6023 }
6024 6024
6025 6025
6026 6026 if (error == 0)
6027 6027 error = vec->zvec_secpolicy(zc, innvl, cr);
6028 6028
6029 6029 if (error != 0)
6030 6030 goto out;
6031 6031
6032 6032 /* legacy ioctls can modify zc_name */
6033 6033 len = strcspn(zc->zc_name, "/@#") + 1;
6034 6034 saved_poolname = kmem_alloc(len, KM_SLEEP);
6035 6035 (void) strlcpy(saved_poolname, zc->zc_name, len);
6036 6036
6037 6037 if (vec->zvec_func != NULL) {
6038 6038 nvlist_t *outnvl;
6039 6039 int puterror = 0;
6040 6040 spa_t *spa;
6041 6041 nvlist_t *lognv = NULL;
6042 6042
6043 6043 ASSERT(vec->zvec_legacy_func == NULL);
6044 6044
6045 6045 /*
6046 6046 * Add the innvl to the lognv before calling the func,
6047 6047 * in case the func changes the innvl.
6048 6048 */
6049 6049 if (vec->zvec_allow_log) {
6050 6050 lognv = fnvlist_alloc();
6051 6051 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL,
6052 6052 vec->zvec_name);
6053 6053 if (!nvlist_empty(innvl)) {
6054 6054 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL,
6055 6055 innvl);
6056 6056 }
6057 6057 }
6058 6058
6059 6059 outnvl = fnvlist_alloc();
6060 6060 error = vec->zvec_func(zc->zc_name, innvl, outnvl);
6061 6061
6062 6062 if (error == 0 && vec->zvec_allow_log &&
6063 6063 spa_open(zc->zc_name, &spa, FTAG) == 0) {
6064 6064 if (!nvlist_empty(outnvl)) {
6065 6065 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL,
6066 6066 outnvl);
6067 6067 }
6068 6068 (void) spa_history_log_nvl(spa, lognv);
6069 6069 spa_close(spa, FTAG);
6070 6070 }
6071 6071 fnvlist_free(lognv);
6072 6072
6073 6073 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) {
6074 6074 int smusherror = 0;
6075 6075 if (vec->zvec_smush_outnvlist) {
6076 6076 smusherror = nvlist_smush(outnvl,
6077 6077 zc->zc_nvlist_dst_size);
6078 6078 }
6079 6079 if (smusherror == 0)
6080 6080 puterror = put_nvlist(zc, outnvl);
6081 6081 }
6082 6082
6083 6083 if (puterror != 0)
6084 6084 error = puterror;
6085 6085
6086 6086 nvlist_free(outnvl);
6087 6087 } else {
6088 6088 error = vec->zvec_legacy_func(zc);
6089 6089 }
6090 6090
6091 6091 out:
6092 6092 nvlist_free(innvl);
6093 6093 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag);
6094 6094 if (error == 0 && rc != 0)
6095 6095 error = SET_ERROR(EFAULT);
6096 6096 if (error == 0 && vec->zvec_allow_log) {
6097 6097 char *s = tsd_get(zfs_allow_log_key);
6098 6098 if (s != NULL)
6099 6099 strfree(s);
6100 6100 (void) tsd_set(zfs_allow_log_key, saved_poolname);
6101 6101 } else {
6102 6102 if (saved_poolname != NULL)
6103 6103 strfree(saved_poolname);
6104 6104 }
6105 6105
6106 6106 kmem_free(zc, sizeof (zfs_cmd_t));
6107 6107 return (error);
6108 6108 }
6109 6109
6110 6110 static int
6111 6111 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
6112 6112 {
6113 6113 if (cmd != DDI_ATTACH)
6114 6114 return (DDI_FAILURE);
6115 6115
6116 6116 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0,
6117 6117 DDI_PSEUDO, 0) == DDI_FAILURE)
6118 6118 return (DDI_FAILURE);
6119 6119
6120 6120 zfs_dip = dip;
6121 6121
6122 6122 ddi_report_dev(dip);
6123 6123
6124 6124 return (DDI_SUCCESS);
6125 6125 }
6126 6126
6127 6127 static int
6128 6128 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
6129 6129 {
6130 6130 if (spa_busy() || zfs_busy() || zvol_busy())
6131 6131 return (DDI_FAILURE);
6132 6132
6133 6133 if (cmd != DDI_DETACH)
6134 6134 return (DDI_FAILURE);
6135 6135
6136 6136 zfs_dip = NULL;
6137 6137
6138 6138 ddi_prop_remove_all(dip);
6139 6139 ddi_remove_minor_node(dip, NULL);
6140 6140
6141 6141 return (DDI_SUCCESS);
6142 6142 }
6143 6143
6144 6144 /*ARGSUSED*/
6145 6145 static int
6146 6146 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
6147 6147 {
6148 6148 switch (infocmd) {
6149 6149 case DDI_INFO_DEVT2DEVINFO:
6150 6150 *result = zfs_dip;
6151 6151 return (DDI_SUCCESS);
6152 6152
6153 6153 case DDI_INFO_DEVT2INSTANCE:
6154 6154 *result = (void *)0;
6155 6155 return (DDI_SUCCESS);
6156 6156 }
6157 6157
6158 6158 return (DDI_FAILURE);
6159 6159 }
6160 6160
6161 6161 /*
6162 6162 * OK, so this is a little weird.
6163 6163 *
6164 6164 * /dev/zfs is the control node, i.e. minor 0.
6165 6165 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0.
6166 6166 *
6167 6167 * /dev/zfs has basically nothing to do except serve up ioctls,
6168 6168 * so most of the standard driver entry points are in zvol.c.
6169 6169 */
6170 6170 static struct cb_ops zfs_cb_ops = {
6171 6171 zfsdev_open, /* open */
6172 6172 zfsdev_close, /* close */
6173 6173 zvol_strategy, /* strategy */
6174 6174 nodev, /* print */
6175 6175 zvol_dump, /* dump */
6176 6176 zvol_read, /* read */
6177 6177 zvol_write, /* write */
6178 6178 zfsdev_ioctl, /* ioctl */
6179 6179 nodev, /* devmap */
6180 6180 nodev, /* mmap */
6181 6181 nodev, /* segmap */
6182 6182 nochpoll, /* poll */
6183 6183 ddi_prop_op, /* prop_op */
6184 6184 NULL, /* streamtab */
6185 6185 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */
6186 6186 CB_REV, /* version */
6187 6187 nodev, /* async read */
6188 6188 nodev, /* async write */
6189 6189 };
6190 6190
6191 6191 static struct dev_ops zfs_dev_ops = {
6192 6192 DEVO_REV, /* version */
6193 6193 0, /* refcnt */
6194 6194 zfs_info, /* info */
6195 6195 nulldev, /* identify */
6196 6196 nulldev, /* probe */
6197 6197 zfs_attach, /* attach */
6198 6198 zfs_detach, /* detach */
6199 6199 nodev, /* reset */
6200 6200 &zfs_cb_ops, /* driver operations */
6201 6201 NULL, /* no bus operations */
6202 6202 NULL, /* power */
6203 6203 ddi_quiesce_not_needed, /* quiesce */
|
↓ open down ↓ |
6203 lines elided |
↑ open up ↑ |
6204 6204 };
6205 6205
6206 6206 static struct modldrv zfs_modldrv = {
6207 6207 &mod_driverops,
6208 6208 "ZFS storage pool",
6209 6209 &zfs_dev_ops
6210 6210 };
6211 6211
6212 6212 static struct modlinkage modlinkage = {
6213 6213 MODREV_1,
6214 - (void *)&zfs_modlfs,
6215 - (void *)&zfs_modldrv,
6216 - NULL
6214 + { (void *)&zfs_modlfs,
6215 + (void *)&zfs_modldrv,
6216 + NULL
6217 + }
6217 6218 };
6218 6219
6219 6220 static void
6220 6221 zfs_allow_log_destroy(void *arg)
6221 6222 {
6222 6223 char *poolname = arg;
6223 6224 strfree(poolname);
6224 6225 }
6225 6226
6226 6227 int
6227 6228 _init(void)
6228 6229 {
6229 6230 int error;
6230 6231
6231 6232 spa_init(FREAD | FWRITE);
6232 6233 zfs_init();
6233 6234 zvol_init();
6234 6235 zfs_ioctl_init();
6235 6236
6236 6237 if ((error = mod_install(&modlinkage)) != 0) {
6237 6238 zvol_fini();
6238 6239 zfs_fini();
6239 6240 spa_fini();
6240 6241 return (error);
6241 6242 }
6242 6243
6243 6244 tsd_create(&zfs_fsyncer_key, NULL);
6244 6245 tsd_create(&rrw_tsd_key, rrw_tsd_destroy);
6245 6246 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy);
6246 6247
6247 6248 error = ldi_ident_from_mod(&modlinkage, &zfs_li);
6248 6249 ASSERT(error == 0);
6249 6250 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL);
6250 6251
6251 6252 return (0);
6252 6253 }
6253 6254
6254 6255 int
6255 6256 _fini(void)
6256 6257 {
6257 6258 int error;
6258 6259
6259 6260 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled)
6260 6261 return (SET_ERROR(EBUSY));
6261 6262
6262 6263 if ((error = mod_remove(&modlinkage)) != 0)
6263 6264 return (error);
6264 6265
6265 6266 zvol_fini();
6266 6267 zfs_fini();
6267 6268 spa_fini();
6268 6269 if (zfs_nfsshare_inited)
6269 6270 (void) ddi_modclose(nfs_mod);
6270 6271 if (zfs_smbshare_inited)
6271 6272 (void) ddi_modclose(smbsrv_mod);
6272 6273 if (zfs_nfsshare_inited || zfs_smbshare_inited)
6273 6274 (void) ddi_modclose(sharefs_mod);
6274 6275
6275 6276 tsd_destroy(&zfs_fsyncer_key);
6276 6277 ldi_ident_release(zfs_li);
6277 6278 zfs_li = NULL;
6278 6279 mutex_destroy(&zfs_share_lock);
6279 6280
6280 6281 return (error);
6281 6282 }
6282 6283
6283 6284 int
6284 6285 _info(struct modinfo *modinfop)
6285 6286 {
6286 6287 return (mod_info(&modlinkage, modinfop));
6287 6288 }
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