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1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <sys/types.h>
27 #include <sys/param.h>
28 #include <sys/errno.h>
29 #include <sys/uio.h>
30 #include <sys/buf.h>
31 #include <sys/modctl.h>
32 #include <sys/open.h>
33 #include <sys/file.h>
34 #include <sys/kmem.h>
35 #include <sys/conf.h>
36 #include <sys/cmn_err.h>
37 #include <sys/stat.h>
38 #include <sys/zfs_ioctl.h>
39 #include <sys/zfs_znode.h>
40 #include <sys/zap.h>
41 #include <sys/spa.h>
42 #include <sys/spa_impl.h>
43 #include <sys/vdev.h>
44 #include <sys/vdev_impl.h>
45 #include <sys/dmu.h>
46 #include <sys/dsl_dir.h>
47 #include <sys/dsl_dataset.h>
48 #include <sys/dsl_prop.h>
49 #include <sys/dsl_deleg.h>
50 #include <sys/dmu_objset.h>
51 #include <sys/ddi.h>
52 #include <sys/sunddi.h>
53 #include <sys/sunldi.h>
54 #include <sys/policy.h>
55 #include <sys/zone.h>
56 #include <sys/nvpair.h>
57 #include <sys/pathname.h>
58 #include <sys/mount.h>
59 #include <sys/sdt.h>
60 #include <sys/fs/zfs.h>
61 #include <sys/zfs_ctldir.h>
62 #include <sys/zfs_dir.h>
63 #include <sys/zvol.h>
64 #include <sharefs/share.h>
65 #include <sys/dmu_objset.h>
66
67 #include "zfs_namecheck.h"
68 #include "zfs_prop.h"
69 #include "zfs_deleg.h"
70
71 extern struct modlfs zfs_modlfs;
72
73 extern void zfs_init(void);
74 extern void zfs_fini(void);
75
76 ldi_ident_t zfs_li = NULL;
77 dev_info_t *zfs_dip;
78
79 typedef int zfs_ioc_func_t(zfs_cmd_t *);
80 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *);
81
82 typedef struct zfs_ioc_vec {
83 zfs_ioc_func_t *zvec_func;
84 zfs_secpolicy_func_t *zvec_secpolicy;
85 enum {
86 NO_NAME,
87 POOL_NAME,
88 DATASET_NAME
89 } zvec_namecheck;
90 boolean_t zvec_his_log;
91 } zfs_ioc_vec_t;
92
93 static void clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops);
94 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *,
95 boolean_t *);
96 int zfs_set_prop_nvlist(const char *, nvlist_t *);
97
98 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */
99 void
100 __dprintf(const char *file, const char *func, int line, const char *fmt, ...)
101 {
102 const char *newfile;
103 char buf[256];
104 va_list adx;
105
106 /*
107 * Get rid of annoying "../common/" prefix to filename.
108 */
109 newfile = strrchr(file, '/');
110 if (newfile != NULL) {
111 newfile = newfile + 1; /* Get rid of leading / */
112 } else {
113 newfile = file;
114 }
115
116 va_start(adx, fmt);
117 (void) vsnprintf(buf, sizeof (buf), fmt, adx);
118 va_end(adx);
119
120 /*
121 * To get this data, use the zfs-dprintf probe as so:
122 * dtrace -q -n 'zfs-dprintf \
123 * /stringof(arg0) == "dbuf.c"/ \
124 * {printf("%s: %s", stringof(arg1), stringof(arg3))}'
125 * arg0 = file name
126 * arg1 = function name
127 * arg2 = line number
128 * arg3 = message
129 */
130 DTRACE_PROBE4(zfs__dprintf,
131 char *, newfile, char *, func, int, line, char *, buf);
132 }
133
134 static void
135 history_str_free(char *buf)
136 {
137 kmem_free(buf, HIS_MAX_RECORD_LEN);
138 }
139
140 static char *
141 history_str_get(zfs_cmd_t *zc)
142 {
143 char *buf;
144
145 if (zc->zc_history == NULL)
146 return (NULL);
147
148 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP);
149 if (copyinstr((void *)(uintptr_t)zc->zc_history,
150 buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
151 history_str_free(buf);
152 return (NULL);
153 }
154
155 buf[HIS_MAX_RECORD_LEN -1] = '\0';
156
157 return (buf);
158 }
159
160 /*
161 * Check to see if the named dataset is currently defined as bootable
162 */
163 static boolean_t
164 zfs_is_bootfs(const char *name)
165 {
166 spa_t *spa;
167 boolean_t ret = B_FALSE;
168
169 if (spa_open(name, &spa, FTAG) == 0) {
170 if (spa->spa_bootfs) {
171 objset_t *os;
172
173 if (dmu_objset_open(name, DMU_OST_ZFS,
174 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
175 ret = (dmu_objset_id(os) == spa->spa_bootfs);
176 dmu_objset_close(os);
177 }
178 }
179 spa_close(spa, FTAG);
180 }
181 return (ret);
182 }
183
184 /*
185 * zfs_earlier_version
186 *
187 * Return non-zero if the spa version is less than requested version.
188 */
189 static int
190 zfs_earlier_version(const char *name, int version)
191 {
192 spa_t *spa;
193
194 if (spa_open(name, &spa, FTAG) == 0) {
195 if (spa_version(spa) < version) {
196 spa_close(spa, FTAG);
197 return (1);
198 }
199 spa_close(spa, FTAG);
200 }
201 return (0);
202 }
203
204 /*
205 * zpl_earlier_version
206 *
207 * Return TRUE if the ZPL version is less than requested version.
208 */
209 static boolean_t
210 zpl_earlier_version(const char *name, int version)
211 {
212 objset_t *os;
213 boolean_t rc = B_TRUE;
214
215 if (dmu_objset_open(name, DMU_OST_ANY,
216 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
217 uint64_t zplversion;
218
219 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0)
220 rc = zplversion < version;
221 dmu_objset_close(os);
222 }
223 return (rc);
224 }
225
226 static void
227 zfs_log_history(zfs_cmd_t *zc)
228 {
229 spa_t *spa;
230 char *buf;
231
232 if ((buf = history_str_get(zc)) == NULL)
233 return;
234
235 if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
236 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
237 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL);
238 spa_close(spa, FTAG);
239 }
240 history_str_free(buf);
241 }
242
243 /*
244 * Policy for top-level read operations (list pools). Requires no privileges,
245 * and can be used in the local zone, as there is no associated dataset.
246 */
247 /* ARGSUSED */
248 static int
249 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr)
250 {
251 return (0);
252 }
253
254 /*
255 * Policy for dataset read operations (list children, get statistics). Requires
256 * no privileges, but must be visible in the local zone.
257 */
258 /* ARGSUSED */
259 static int
260 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr)
261 {
262 if (INGLOBALZONE(curproc) ||
263 zone_dataset_visible(zc->zc_name, NULL))
264 return (0);
265
266 return (ENOENT);
267 }
268
269 static int
270 zfs_dozonecheck(const char *dataset, cred_t *cr)
271 {
272 uint64_t zoned;
273 int writable = 1;
274
275 /*
276 * The dataset must be visible by this zone -- check this first
277 * so they don't see EPERM on something they shouldn't know about.
278 */
279 if (!INGLOBALZONE(curproc) &&
280 !zone_dataset_visible(dataset, &writable))
281 return (ENOENT);
282
283 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
284 return (ENOENT);
285
286 if (INGLOBALZONE(curproc)) {
287 /*
288 * If the fs is zoned, only root can access it from the
289 * global zone.
290 */
291 if (secpolicy_zfs(cr) && zoned)
292 return (EPERM);
293 } else {
294 /*
295 * If we are in a local zone, the 'zoned' property must be set.
296 */
297 if (!zoned)
298 return (EPERM);
299
300 /* must be writable by this zone */
301 if (!writable)
302 return (EPERM);
303 }
304 return (0);
305 }
306
307 int
308 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
309 {
310 int error;
311
312 error = zfs_dozonecheck(name, cr);
313 if (error == 0) {
314 error = secpolicy_zfs(cr);
315 if (error)
316 error = dsl_deleg_access(name, perm, cr);
317 }
318 return (error);
319 }
320
321 static int
322 zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr)
323 {
324 /*
325 * Check permissions for special properties.
326 */
327 switch (prop) {
328 case ZFS_PROP_ZONED:
329 /*
330 * Disallow setting of 'zoned' from within a local zone.
331 */
332 if (!INGLOBALZONE(curproc))
333 return (EPERM);
334 break;
335
336 case ZFS_PROP_QUOTA:
337 if (!INGLOBALZONE(curproc)) {
338 uint64_t zoned;
339 char setpoint[MAXNAMELEN];
340 /*
341 * Unprivileged users are allowed to modify the
342 * quota on things *under* (ie. contained by)
343 * the thing they own.
344 */
345 if (dsl_prop_get_integer(name, "zoned", &zoned,
346 setpoint))
347 return (EPERM);
348 if (!zoned || strlen(name) <= strlen(setpoint))
349 return (EPERM);
350 }
351 break;
352 }
353
354 return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr));
355 }
356
357 int
358 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr)
359 {
360 int error;
361
362 error = zfs_dozonecheck(zc->zc_name, cr);
363 if (error)
364 return (error);
365
366 /*
367 * permission to set permissions will be evaluated later in
368 * dsl_deleg_can_allow()
369 */
370 return (0);
371 }
372
373 int
374 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr)
375 {
376 int error;
377 error = zfs_secpolicy_write_perms(zc->zc_name,
378 ZFS_DELEG_PERM_ROLLBACK, cr);
379 if (error == 0)
380 error = zfs_secpolicy_write_perms(zc->zc_name,
381 ZFS_DELEG_PERM_MOUNT, cr);
382 return (error);
383 }
384
385 int
386 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr)
387 {
388 return (zfs_secpolicy_write_perms(zc->zc_name,
389 ZFS_DELEG_PERM_SEND, cr));
390 }
391
392 int
393 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr)
394 {
395 if (!INGLOBALZONE(curproc))
396 return (EPERM);
397
398 if (secpolicy_nfs(cr) == 0) {
399 return (0);
400 } else {
401 vnode_t *vp;
402 int error;
403
404 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
405 NO_FOLLOW, NULL, &vp)) != 0)
406 return (error);
407
408 /* Now make sure mntpnt and dataset are ZFS */
409
410 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
411 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
412 zc->zc_name) != 0)) {
413 VN_RELE(vp);
414 return (EPERM);
415 }
416
417 VN_RELE(vp);
418 return (dsl_deleg_access(zc->zc_name,
419 ZFS_DELEG_PERM_SHARE, cr));
420 }
421 }
422
423 static int
424 zfs_get_parent(const char *datasetname, char *parent, int parentsize)
425 {
426 char *cp;
427
428 /*
429 * Remove the @bla or /bla from the end of the name to get the parent.
430 */
431 (void) strncpy(parent, datasetname, parentsize);
432 cp = strrchr(parent, '@');
433 if (cp != NULL) {
434 cp[0] = '\0';
435 } else {
436 cp = strrchr(parent, '/');
437 if (cp == NULL)
438 return (ENOENT);
439 cp[0] = '\0';
440 }
441
442 return (0);
443 }
444
445 int
446 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
447 {
448 int error;
449
450 if ((error = zfs_secpolicy_write_perms(name,
451 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
452 return (error);
453
454 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
455 }
456
457 static int
458 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr)
459 {
460 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
461 }
462
463 /*
464 * Must have sys_config privilege to check the iscsi permission
465 */
466 /* ARGSUSED */
467 static int
468 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr)
469 {
470 return (secpolicy_zfs(cr));
471 }
472
473 int
474 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
475 {
476 char parentname[MAXNAMELEN];
477 int error;
478
479 if ((error = zfs_secpolicy_write_perms(from,
480 ZFS_DELEG_PERM_RENAME, cr)) != 0)
481 return (error);
482
483 if ((error = zfs_secpolicy_write_perms(from,
484 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
485 return (error);
486
487 if ((error = zfs_get_parent(to, parentname,
488 sizeof (parentname))) != 0)
489 return (error);
490
491 if ((error = zfs_secpolicy_write_perms(parentname,
492 ZFS_DELEG_PERM_CREATE, cr)) != 0)
493 return (error);
494
495 if ((error = zfs_secpolicy_write_perms(parentname,
496 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
497 return (error);
498
499 return (error);
500 }
501
502 static int
503 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr)
504 {
505 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));
506 }
507
508 static int
509 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr)
510 {
511 char parentname[MAXNAMELEN];
512 objset_t *clone;
513 int error;
514
515 error = zfs_secpolicy_write_perms(zc->zc_name,
516 ZFS_DELEG_PERM_PROMOTE, cr);
517 if (error)
518 return (error);
519
520 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY,
521 DS_MODE_USER | DS_MODE_READONLY, &clone);
522
523 if (error == 0) {
524 dsl_dataset_t *pclone = NULL;
525 dsl_dir_t *dd;
526 dd = clone->os->os_dsl_dataset->ds_dir;
527
528 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER);
529 error = dsl_dataset_hold_obj(dd->dd_pool,
530 dd->dd_phys->dd_origin_obj, FTAG, &pclone);
531 rw_exit(&dd->dd_pool->dp_config_rwlock);
532 if (error) {
533 dmu_objset_close(clone);
534 return (error);
535 }
536
537 error = zfs_secpolicy_write_perms(zc->zc_name,
538 ZFS_DELEG_PERM_MOUNT, cr);
539
540 dsl_dataset_name(pclone, parentname);
541 dmu_objset_close(clone);
542 dsl_dataset_rele(pclone, FTAG);
543 if (error == 0)
544 error = zfs_secpolicy_write_perms(parentname,
545 ZFS_DELEG_PERM_PROMOTE, cr);
546 }
547 return (error);
548 }
549
550 static int
551 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr)
552 {
553 int error;
554
555 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
556 ZFS_DELEG_PERM_RECEIVE, cr)) != 0)
557 return (error);
558
559 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
560 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
561 return (error);
562
563 return (zfs_secpolicy_write_perms(zc->zc_name,
564 ZFS_DELEG_PERM_CREATE, cr));
565 }
566
567 int
568 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
569 {
570 int error;
571
572 if ((error = zfs_secpolicy_write_perms(name,
573 ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0)
574 return (error);
575
576 error = zfs_secpolicy_write_perms(name,
577 ZFS_DELEG_PERM_MOUNT, cr);
578
579 return (error);
580 }
581
582 static int
583 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr)
584 {
585
586 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr));
587 }
588
589 static int
590 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr)
591 {
592 char parentname[MAXNAMELEN];
593 int error;
594
595 if ((error = zfs_get_parent(zc->zc_name, parentname,
596 sizeof (parentname))) != 0)
597 return (error);
598
599 if (zc->zc_value[0] != '\0') {
600 if ((error = zfs_secpolicy_write_perms(zc->zc_value,
601 ZFS_DELEG_PERM_CLONE, cr)) != 0)
602 return (error);
603 }
604
605 if ((error = zfs_secpolicy_write_perms(parentname,
606 ZFS_DELEG_PERM_CREATE, cr)) != 0)
607 return (error);
608
609 error = zfs_secpolicy_write_perms(parentname,
610 ZFS_DELEG_PERM_MOUNT, cr);
611
612 return (error);
613 }
614
615 static int
616 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr)
617 {
618 int error;
619
620 error = secpolicy_fs_unmount(cr, NULL);
621 if (error) {
622 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr);
623 }
624 return (error);
625 }
626
627 /*
628 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires
629 * SYS_CONFIG privilege, which is not available in a local zone.
630 */
631 /* ARGSUSED */
632 static int
633 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr)
634 {
635 if (secpolicy_sys_config(cr, B_FALSE) != 0)
636 return (EPERM);
637
638 return (0);
639 }
640
641 /*
642 * Just like zfs_secpolicy_config, except that we will check for
643 * mount permission on the dataset for permission to create/remove
644 * the minor nodes.
645 */
646 static int
647 zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr)
648 {
649 if (secpolicy_sys_config(cr, B_FALSE) != 0) {
650 return (dsl_deleg_access(zc->zc_name,
651 ZFS_DELEG_PERM_MOUNT, cr));
652 }
653
654 return (0);
655 }
656
657 /*
658 * Policy for fault injection. Requires all privileges.
659 */
660 /* ARGSUSED */
661 static int
662 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr)
663 {
664 return (secpolicy_zinject(cr));
665 }
666
667 static int
668 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr)
669 {
670 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
671
672 if (prop == ZPROP_INVAL) {
673 if (!zfs_prop_user(zc->zc_value))
674 return (EINVAL);
675 return (zfs_secpolicy_write_perms(zc->zc_name,
676 ZFS_DELEG_PERM_USERPROP, cr));
677 } else {
678 if (!zfs_prop_inheritable(prop))
679 return (EINVAL);
680 return (zfs_secpolicy_setprop(zc->zc_name, prop, cr));
681 }
682 }
683
684 /*
685 * Returns the nvlist as specified by the user in the zfs_cmd_t.
686 */
687 static int
688 get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp)
689 {
690 char *packed;
691 int error;
692 nvlist_t *list = NULL;
693
694 /*
695 * Read in and unpack the user-supplied nvlist.
696 */
697 if (size == 0)
698 return (EINVAL);
699
700 packed = kmem_alloc(size, KM_SLEEP);
701
702 if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) {
703 kmem_free(packed, size);
704 return (error);
705 }
706
707 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) {
708 kmem_free(packed, size);
709 return (error);
710 }
711
712 kmem_free(packed, size);
713
714 *nvp = list;
715 return (0);
716 }
717
718 static int
719 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
720 {
721 char *packed = NULL;
722 size_t size;
723 int error;
724
725 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0);
726
727 if (size > zc->zc_nvlist_dst_size) {
728 error = ENOMEM;
729 } else {
730 packed = kmem_alloc(size, KM_SLEEP);
731 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
732 KM_SLEEP) == 0);
733 error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
734 size);
735 kmem_free(packed, size);
736 }
737
738 zc->zc_nvlist_dst_size = size;
739 return (error);
740 }
741
742 static int
743 zfs_ioc_pool_create(zfs_cmd_t *zc)
744 {
745 int error;
746 nvlist_t *config, *props = NULL;
747 nvlist_t *rootprops = NULL;
748 nvlist_t *zplprops = NULL;
749 char *buf;
750
751 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
752 &config))
753 return (error);
754
755 if (zc->zc_nvlist_src_size != 0 && (error =
756 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) {
757 nvlist_free(config);
758 return (error);
759 }
760
761 if (props) {
762 nvlist_t *nvl = NULL;
763 uint64_t version = SPA_VERSION;
764
765 (void) nvlist_lookup_uint64(props,
766 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version);
767 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) {
768 error = EINVAL;
769 goto pool_props_bad;
770 }
771 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl);
772 if (nvl) {
773 error = nvlist_dup(nvl, &rootprops, KM_SLEEP);
774 if (error != 0) {
775 nvlist_free(config);
776 nvlist_free(props);
777 return (error);
778 }
779 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS);
780 }
781 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
782 error = zfs_fill_zplprops_root(version, rootprops,
783 zplprops, NULL);
784 if (error)
785 goto pool_props_bad;
786 }
787
788 buf = history_str_get(zc);
789
790 error = spa_create(zc->zc_name, config, props, buf, zplprops);
791
792 /*
793 * Set the remaining root properties
794 */
795 if (!error &&
796 (error = zfs_set_prop_nvlist(zc->zc_name, rootprops)) != 0)
797 (void) spa_destroy(zc->zc_name);
798
799 if (buf != NULL)
800 history_str_free(buf);
801
802 pool_props_bad:
803 nvlist_free(rootprops);
804 nvlist_free(zplprops);
805 nvlist_free(config);
806 nvlist_free(props);
807
808 return (error);
809 }
810
811 static int
812 zfs_ioc_pool_destroy(zfs_cmd_t *zc)
813 {
814 int error;
815 zfs_log_history(zc);
816 error = spa_destroy(zc->zc_name);
817 return (error);
818 }
819
820 static int
821 zfs_ioc_pool_import(zfs_cmd_t *zc)
822 {
823 int error;
824 nvlist_t *config, *props = NULL;
825 uint64_t guid;
826
827 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
828 &config)) != 0)
829 return (error);
830
831 if (zc->zc_nvlist_src_size != 0 && (error =
832 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) {
833 nvlist_free(config);
834 return (error);
835 }
836
837 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
838 guid != zc->zc_guid)
839 error = EINVAL;
840 else if (zc->zc_cookie)
841 error = spa_import_faulted(zc->zc_name, config,
842 props);
843 else
844 error = spa_import(zc->zc_name, config, props);
845
846 nvlist_free(config);
847
848 if (props)
849 nvlist_free(props);
850
851 return (error);
852 }
853
854 static int
855 zfs_ioc_pool_export(zfs_cmd_t *zc)
856 {
857 int error;
858 boolean_t force = (boolean_t)zc->zc_cookie;
859 boolean_t hardforce = (boolean_t)zc->zc_guid;
860
861 zfs_log_history(zc);
862 error = spa_export(zc->zc_name, NULL, force, hardforce);
863 return (error);
864 }
865
866 static int
867 zfs_ioc_pool_configs(zfs_cmd_t *zc)
868 {
869 nvlist_t *configs;
870 int error;
871
872 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
873 return (EEXIST);
874
875 error = put_nvlist(zc, configs);
876
877 nvlist_free(configs);
878
879 return (error);
880 }
881
882 static int
883 zfs_ioc_pool_stats(zfs_cmd_t *zc)
884 {
885 nvlist_t *config;
886 int error;
887 int ret = 0;
888
889 error = spa_get_stats(zc->zc_name, &config, zc->zc_value,
890 sizeof (zc->zc_value));
891
892 if (config != NULL) {
893 ret = put_nvlist(zc, config);
894 nvlist_free(config);
895
896 /*
897 * The config may be present even if 'error' is non-zero.
898 * In this case we return success, and preserve the real errno
899 * in 'zc_cookie'.
900 */
901 zc->zc_cookie = error;
902 } else {
903 ret = error;
904 }
905
906 return (ret);
907 }
908
909 /*
910 * Try to import the given pool, returning pool stats as appropriate so that
911 * user land knows which devices are available and overall pool health.
912 */
913 static int
914 zfs_ioc_pool_tryimport(zfs_cmd_t *zc)
915 {
916 nvlist_t *tryconfig, *config;
917 int error;
918
919 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
920 &tryconfig)) != 0)
921 return (error);
922
923 config = spa_tryimport(tryconfig);
924
925 nvlist_free(tryconfig);
926
927 if (config == NULL)
928 return (EINVAL);
929
930 error = put_nvlist(zc, config);
931 nvlist_free(config);
932
933 return (error);
934 }
935
936 static int
937 zfs_ioc_pool_scrub(zfs_cmd_t *zc)
938 {
939 spa_t *spa;
940 int error;
941
942 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
943 return (error);
944
945 error = spa_scrub(spa, zc->zc_cookie);
946
947 spa_close(spa, FTAG);
948
949 return (error);
950 }
951
952 static int
953 zfs_ioc_pool_freeze(zfs_cmd_t *zc)
954 {
955 spa_t *spa;
956 int error;
957
958 error = spa_open(zc->zc_name, &spa, FTAG);
959 if (error == 0) {
960 spa_freeze(spa);
961 spa_close(spa, FTAG);
962 }
963 return (error);
964 }
965
966 static int
967 zfs_ioc_pool_upgrade(zfs_cmd_t *zc)
968 {
969 spa_t *spa;
970 int error;
971
972 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
973 return (error);
974
975 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) {
976 spa_close(spa, FTAG);
977 return (EINVAL);
978 }
979
980 spa_upgrade(spa, zc->zc_cookie);
981 spa_close(spa, FTAG);
982
983 return (error);
984 }
985
986 static int
987 zfs_ioc_pool_get_history(zfs_cmd_t *zc)
988 {
989 spa_t *spa;
990 char *hist_buf;
991 uint64_t size;
992 int error;
993
994 if ((size = zc->zc_history_len) == 0)
995 return (EINVAL);
996
997 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
998 return (error);
999
1000 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
1001 spa_close(spa, FTAG);
1002 return (ENOTSUP);
1003 }
1004
1005 hist_buf = kmem_alloc(size, KM_SLEEP);
1006 if ((error = spa_history_get(spa, &zc->zc_history_offset,
1007 &zc->zc_history_len, hist_buf)) == 0) {
1008 error = xcopyout(hist_buf,
1009 (char *)(uintptr_t)zc->zc_history,
1010 zc->zc_history_len);
1011 }
1012
1013 spa_close(spa, FTAG);
1014 kmem_free(hist_buf, size);
1015 return (error);
1016 }
1017
1018 static int
1019 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
1020 {
1021 int error;
1022
1023 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value))
1024 return (error);
1025
1026 return (0);
1027 }
1028
1029 static int
1030 zfs_ioc_obj_to_path(zfs_cmd_t *zc)
1031 {
1032 objset_t *osp;
1033 int error;
1034
1035 if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS,
1036 DS_MODE_USER | DS_MODE_READONLY, &osp)) != 0)
1037 return (error);
1038 error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value,
1039 sizeof (zc->zc_value));
1040 dmu_objset_close(osp);
1041
1042 return (error);
1043 }
1044
1045 static int
1046 zfs_ioc_vdev_add(zfs_cmd_t *zc)
1047 {
1048 spa_t *spa;
1049 int error;
1050 nvlist_t *config, **l2cache, **spares;
1051 uint_t nl2cache = 0, nspares = 0;
1052
1053 error = spa_open(zc->zc_name, &spa, FTAG);
1054 if (error != 0)
1055 return (error);
1056
1057 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1058 &config);
1059 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
1060 &l2cache, &nl2cache);
1061
1062 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
1063 &spares, &nspares);
1064
1065 /*
1066 * A root pool with concatenated devices is not supported.
1067 * Thus, can not add a device to a root pool.
1068 *
1069 * Intent log device can not be added to a rootpool because
1070 * during mountroot, zil is replayed, a seperated log device
1071 * can not be accessed during the mountroot time.
1072 *
1073 * l2cache and spare devices are ok to be added to a rootpool.
1074 */
1075 if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) {
1076 spa_close(spa, FTAG);
1077 return (EDOM);
1078 }
1079
1080 if (error == 0) {
1081 error = spa_vdev_add(spa, config);
1082 nvlist_free(config);
1083 }
1084 spa_close(spa, FTAG);
1085 return (error);
1086 }
1087
1088 static int
1089 zfs_ioc_vdev_remove(zfs_cmd_t *zc)
1090 {
1091 spa_t *spa;
1092 int error;
1093
1094 error = spa_open(zc->zc_name, &spa, FTAG);
1095 if (error != 0)
1096 return (error);
1097 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE);
1098 spa_close(spa, FTAG);
1099 return (error);
1100 }
1101
1102 static int
1103 zfs_ioc_vdev_set_state(zfs_cmd_t *zc)
1104 {
1105 spa_t *spa;
1106 int error;
1107 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
1108
1109 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1110 return (error);
1111 switch (zc->zc_cookie) {
1112 case VDEV_STATE_ONLINE:
1113 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate);
1114 break;
1115
1116 case VDEV_STATE_OFFLINE:
1117 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj);
1118 break;
1119
1120 case VDEV_STATE_FAULTED:
1121 error = vdev_fault(spa, zc->zc_guid);
1122 break;
1123
1124 case VDEV_STATE_DEGRADED:
1125 error = vdev_degrade(spa, zc->zc_guid);
1126 break;
1127
1128 default:
1129 error = EINVAL;
1130 }
1131 zc->zc_cookie = newstate;
1132 spa_close(spa, FTAG);
1133 return (error);
1134 }
1135
1136 static int
1137 zfs_ioc_vdev_attach(zfs_cmd_t *zc)
1138 {
1139 spa_t *spa;
1140 int replacing = zc->zc_cookie;
1141 nvlist_t *config;
1142 int error;
1143
1144 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1145 return (error);
1146
1147 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1148 &config)) == 0) {
1149 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
1150 nvlist_free(config);
1151 }
1152
1153 spa_close(spa, FTAG);
1154 return (error);
1155 }
1156
1157 static int
1158 zfs_ioc_vdev_detach(zfs_cmd_t *zc)
1159 {
1160 spa_t *spa;
1161 int error;
1162
1163 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1164 return (error);
1165
1166 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE);
1167
1168 spa_close(spa, FTAG);
1169 return (error);
1170 }
1171
1172 static int
1173 zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
1174 {
1175 spa_t *spa;
1176 char *path = zc->zc_value;
1177 uint64_t guid = zc->zc_guid;
1178 int error;
1179
1180 error = spa_open(zc->zc_name, &spa, FTAG);
1181 if (error != 0)
1182 return (error);
1183
1184 error = spa_vdev_setpath(spa, guid, path);
1185 spa_close(spa, FTAG);
1186 return (error);
1187 }
1188
1189 /*
1190 * inputs:
1191 * zc_name name of filesystem
1192 * zc_nvlist_dst_size size of buffer for property nvlist
1193 *
1194 * outputs:
1195 * zc_objset_stats stats
1196 * zc_nvlist_dst property nvlist
1197 * zc_nvlist_dst_size size of property nvlist
1198 */
1199 static int
1200 zfs_ioc_objset_stats(zfs_cmd_t *zc)
1201 {
1202 objset_t *os = NULL;
1203 int error;
1204 nvlist_t *nv;
1205
1206 if (error = dmu_objset_open(zc->zc_name,
1207 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os))
1208 return (error);
1209
1210 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1211
1212 if (zc->zc_nvlist_dst != 0 &&
1213 (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) {
1214 dmu_objset_stats(os, nv);
1215 /*
1216 * NB: zvol_get_stats() will read the objset contents,
1217 * which we aren't supposed to do with a
1218 * DS_MODE_USER hold, because it could be
1219 * inconsistent. So this is a bit of a workaround...
1220 */
1221 if (!zc->zc_objset_stats.dds_inconsistent) {
1222 if (dmu_objset_type(os) == DMU_OST_ZVOL)
1223 VERIFY(zvol_get_stats(os, nv) == 0);
1224 }
1225 error = put_nvlist(zc, nv);
1226 nvlist_free(nv);
1227 }
1228
1229 dmu_objset_close(os);
1230 return (error);
1231 }
1232
1233 static int
1234 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop)
1235 {
1236 uint64_t value;
1237 int error;
1238
1239 /*
1240 * zfs_get_zplprop() will either find a value or give us
1241 * the default value (if there is one).
1242 */
1243 if ((error = zfs_get_zplprop(os, prop, &value)) != 0)
1244 return (error);
1245 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0);
1246 return (0);
1247 }
1248
1249 /*
1250 * inputs:
1251 * zc_name name of filesystem
1252 * zc_nvlist_dst_size size of buffer for zpl property nvlist
1253 *
1254 * outputs:
1255 * zc_nvlist_dst zpl property nvlist
1256 * zc_nvlist_dst_size size of zpl property nvlist
1257 */
1258 static int
1259 zfs_ioc_objset_zplprops(zfs_cmd_t *zc)
1260 {
1261 objset_t *os;
1262 int err;
1263
1264 if (err = dmu_objset_open(zc->zc_name,
1265 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os))
1266 return (err);
1267
1268 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1269
1270 /*
1271 * NB: nvl_add_zplprop() will read the objset contents,
1272 * which we aren't supposed to do with a DS_MODE_USER
1273 * hold, because it could be inconsistent.
1274 */
1275 if (zc->zc_nvlist_dst != NULL &&
1276 !zc->zc_objset_stats.dds_inconsistent &&
1277 dmu_objset_type(os) == DMU_OST_ZFS) {
1278 nvlist_t *nv;
1279
1280 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1281 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 &&
1282 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 &&
1283 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 &&
1284 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0)
1285 err = put_nvlist(zc, nv);
1286 nvlist_free(nv);
1287 } else {
1288 err = ENOENT;
1289 }
1290 dmu_objset_close(os);
1291 return (err);
1292 }
1293
1294 /*
1295 * inputs:
1296 * zc_name name of filesystem
1297 * zc_cookie zap cursor
1298 * zc_nvlist_dst_size size of buffer for property nvlist
1299 *
1300 * outputs:
1301 * zc_name name of next filesystem
1302 * zc_objset_stats stats
1303 * zc_nvlist_dst property nvlist
1304 * zc_nvlist_dst_size size of property nvlist
1305 */
1306 static int
1307 zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
1308 {
1309 objset_t *os;
1310 int error;
1311 char *p;
1312
1313 if (error = dmu_objset_open(zc->zc_name,
1314 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) {
1315 if (error == ENOENT)
1316 error = ESRCH;
1317 return (error);
1318 }
1319
1320 p = strrchr(zc->zc_name, '/');
1321 if (p == NULL || p[1] != '\0')
1322 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
1323 p = zc->zc_name + strlen(zc->zc_name);
1324
1325 if (zc->zc_cookie == 0) {
1326 uint64_t cookie = 0;
1327 int len = sizeof (zc->zc_name) - (p - zc->zc_name);
1328
1329 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0)
1330 dmu_objset_prefetch(p, NULL);
1331 }
1332
1333 do {
1334 error = dmu_dir_list_next(os,
1335 sizeof (zc->zc_name) - (p - zc->zc_name), p,
1336 NULL, &zc->zc_cookie);
1337 if (error == ENOENT)
1338 error = ESRCH;
1339 } while (error == 0 && !INGLOBALZONE(curproc) &&
1340 !zone_dataset_visible(zc->zc_name, NULL));
1341 dmu_objset_close(os);
1342
1343 /*
1344 * If it's a hidden dataset (ie. with a '$' in its name), don't
1345 * try to get stats for it. Userland will skip over it.
1346 */
1347 if (error == 0 && strchr(zc->zc_name, '$') == NULL)
1348 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
1349
1350 return (error);
1351 }
1352
1353 /*
1354 * inputs:
1355 * zc_name name of filesystem
1356 * zc_cookie zap cursor
1357 * zc_nvlist_dst_size size of buffer for property nvlist
1358 *
1359 * outputs:
1360 * zc_name name of next snapshot
1361 * zc_objset_stats stats
1362 * zc_nvlist_dst property nvlist
1363 * zc_nvlist_dst_size size of property nvlist
1364 */
1365 static int
1366 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc)
1367 {
1368 objset_t *os;
1369 int error;
1370
1371 error = dmu_objset_open(zc->zc_name,
1372 DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os);
1373 if (error)
1374 return (error == ENOENT ? ESRCH : error);
1375
1376 if (zc->zc_cookie == 0)
1377 dmu_objset_find(zc->zc_name, dmu_objset_prefetch,
1378 NULL, DS_FIND_SNAPSHOTS);
1379 /*
1380 * A dataset name of maximum length cannot have any snapshots,
1381 * so exit immediately.
1382 */
1383 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) {
1384 dmu_objset_close(os);
1385 return (ESRCH);
1386 }
1387
1388 error = dmu_snapshot_list_next(os,
1389 sizeof (zc->zc_name) - strlen(zc->zc_name),
1390 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL);
1391 dmu_objset_close(os);
1392 if (error == 0)
1393 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
1394 else if (error == ENOENT)
1395 error = ESRCH;
1396
1397 /* if we failed, undo the @ that we tacked on to zc_name */
1398 if (error)
1399 *strchr(zc->zc_name, '@') = '\0';
1400 return (error);
1401 }
1402
1403 int
1404 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl)
1405 {
1406 nvpair_t *elem;
1407 int error;
1408 uint64_t intval;
1409 char *strval;
1410
1411 /*
1412 * First validate permission to set all of the properties
1413 */
1414 elem = NULL;
1415 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
1416 const char *propname = nvpair_name(elem);
1417 zfs_prop_t prop = zfs_name_to_prop(propname);
1418
1419 if (prop == ZPROP_INVAL) {
1420 /*
1421 * If this is a user-defined property, it must be a
1422 * string, and there is no further validation to do.
1423 */
1424 if (!zfs_prop_user(propname) ||
1425 nvpair_type(elem) != DATA_TYPE_STRING)
1426 return (EINVAL);
1427
1428 if (error = zfs_secpolicy_write_perms(name,
1429 ZFS_DELEG_PERM_USERPROP, CRED()))
1430 return (error);
1431 continue;
1432 }
1433
1434 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0)
1435 return (error);
1436
1437 /*
1438 * Check that this value is valid for this pool version
1439 */
1440 switch (prop) {
1441 case ZFS_PROP_COMPRESSION:
1442 /*
1443 * If the user specified gzip compression, make sure
1444 * the SPA supports it. We ignore any errors here since
1445 * we'll catch them later.
1446 */
1447 if (nvpair_type(elem) == DATA_TYPE_UINT64 &&
1448 nvpair_value_uint64(elem, &intval) == 0) {
1449 if (intval >= ZIO_COMPRESS_GZIP_1 &&
1450 intval <= ZIO_COMPRESS_GZIP_9 &&
1451 zfs_earlier_version(name,
1452 SPA_VERSION_GZIP_COMPRESSION))
1453 return (ENOTSUP);
1454
1455 /*
1456 * If this is a bootable dataset then
1457 * verify that the compression algorithm
1458 * is supported for booting. We must return
1459 * something other than ENOTSUP since it
1460 * implies a downrev pool version.
1461 */
1462 if (zfs_is_bootfs(name) &&
1463 !BOOTFS_COMPRESS_VALID(intval))
1464 return (ERANGE);
1465 }
1466 break;
1467
1468 case ZFS_PROP_COPIES:
1469 if (zfs_earlier_version(name,
1470 SPA_VERSION_DITTO_BLOCKS))
1471 return (ENOTSUP);
1472 break;
1473
1474 case ZFS_PROP_SHARESMB:
1475 if (zpl_earlier_version(name, ZPL_VERSION_FUID))
1476 return (ENOTSUP);
1477 break;
1478
1479 case ZFS_PROP_ACLINHERIT:
1480 if (nvpair_type(elem) == DATA_TYPE_UINT64 &&
1481 nvpair_value_uint64(elem, &intval) == 0)
1482 if (intval == ZFS_ACL_PASSTHROUGH_X &&
1483 zfs_earlier_version(name,
1484 SPA_VERSION_PASSTHROUGH_X))
1485 return (ENOTSUP);
1486 }
1487 }
1488
1489 elem = NULL;
1490 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
1491 const char *propname = nvpair_name(elem);
1492 zfs_prop_t prop = zfs_name_to_prop(propname);
1493
1494 if (prop == ZPROP_INVAL) {
1495 VERIFY(nvpair_value_string(elem, &strval) == 0);
1496 error = dsl_prop_set(name, propname, 1,
1497 strlen(strval) + 1, strval);
1498 if (error == 0)
1499 continue;
1500 else
1501 return (error);
1502 }
1503
1504 switch (prop) {
1505 case ZFS_PROP_QUOTA:
1506 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1507 (error = dsl_dir_set_quota(name, intval)) != 0)
1508 return (error);
1509 break;
1510
1511 case ZFS_PROP_REFQUOTA:
1512 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1513 (error = dsl_dataset_set_quota(name, intval)) != 0)
1514 return (error);
1515 break;
1516
1517 case ZFS_PROP_RESERVATION:
1518 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1519 (error = dsl_dir_set_reservation(name,
1520 intval)) != 0)
1521 return (error);
1522 break;
1523
1524 case ZFS_PROP_REFRESERVATION:
1525 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1526 (error = dsl_dataset_set_reservation(name,
1527 intval)) != 0)
1528 return (error);
1529 break;
1530
1531 case ZFS_PROP_VOLSIZE:
1532 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1533 (error = zvol_set_volsize(name,
1534 ddi_driver_major(zfs_dip), intval)) != 0)
1535 return (error);
1536 break;
1537
1538 case ZFS_PROP_VOLBLOCKSIZE:
1539 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1540 (error = zvol_set_volblocksize(name, intval)) != 0)
1541 return (error);
1542 break;
1543
1544 case ZFS_PROP_VERSION:
1545 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1546 (error = zfs_set_version(name, intval)) != 0)
1547 return (error);
1548 break;
1549
1550 default:
1551 if (nvpair_type(elem) == DATA_TYPE_STRING) {
1552 if (zfs_prop_get_type(prop) !=
1553 PROP_TYPE_STRING)
1554 return (EINVAL);
1555 VERIFY(nvpair_value_string(elem, &strval) == 0);
1556 if ((error = dsl_prop_set(name,
1557 nvpair_name(elem), 1, strlen(strval) + 1,
1558 strval)) != 0)
1559 return (error);
1560 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) {
1561 const char *unused;
1562
1563 VERIFY(nvpair_value_uint64(elem, &intval) == 0);
1564
1565 switch (zfs_prop_get_type(prop)) {
1566 case PROP_TYPE_NUMBER:
1567 break;
1568 case PROP_TYPE_STRING:
1569 return (EINVAL);
1570 case PROP_TYPE_INDEX:
1571 if (zfs_prop_index_to_string(prop,
1572 intval, &unused) != 0)
1573 return (EINVAL);
1574 break;
1575 default:
1576 cmn_err(CE_PANIC,
1577 "unknown property type");
1578 break;
1579 }
1580
1581 if ((error = dsl_prop_set(name, propname,
1582 8, 1, &intval)) != 0)
1583 return (error);
1584 } else {
1585 return (EINVAL);
1586 }
1587 break;
1588 }
1589 }
1590
1591 return (0);
1592 }
1593
1594 /*
1595 * inputs:
1596 * zc_name name of filesystem
1597 * zc_value name of property to inherit
1598 * zc_nvlist_src{_size} nvlist of properties to apply
1599 * zc_cookie clear existing local props?
1600 *
1601 * outputs: none
1602 */
1603 static int
1604 zfs_ioc_set_prop(zfs_cmd_t *zc)
1605 {
1606 nvlist_t *nvl;
1607 int error;
1608
1609 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1610 &nvl)) != 0)
1611 return (error);
1612
1613 if (zc->zc_cookie) {
1614 nvlist_t *origprops;
1615 objset_t *os;
1616
1617 if (dmu_objset_open(zc->zc_name, DMU_OST_ANY,
1618 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
1619 if (dsl_prop_get_all(os, &origprops, TRUE) == 0) {
1620 clear_props(zc->zc_name, origprops, nvl);
1621 nvlist_free(origprops);
1622 }
1623 dmu_objset_close(os);
1624 }
1625
1626 }
1627
1628 error = zfs_set_prop_nvlist(zc->zc_name, nvl);
1629
1630 nvlist_free(nvl);
1631 return (error);
1632 }
1633
1634 /*
1635 * inputs:
1636 * zc_name name of filesystem
1637 * zc_value name of property to inherit
1638 *
1639 * outputs: none
1640 */
1641 static int
1642 zfs_ioc_inherit_prop(zfs_cmd_t *zc)
1643 {
1644 /* the property name has been validated by zfs_secpolicy_inherit() */
1645 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL));
1646 }
1647
1648 static int
1649 zfs_ioc_pool_set_props(zfs_cmd_t *zc)
1650 {
1651 nvlist_t *props;
1652 spa_t *spa;
1653 int error;
1654 nvpair_t *elem;
1655
1656 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1657 &props)))
1658 return (error);
1659
1660 /*
1661 * If the only property is the configfile, then just do a spa_lookup()
1662 * to handle the faulted case.
1663 */
1664 elem = nvlist_next_nvpair(props, NULL);
1665 if (elem != NULL && strcmp(nvpair_name(elem),
1666 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 &&
1667 nvlist_next_nvpair(props, elem) == NULL) {
1668 mutex_enter(&spa_namespace_lock);
1669 if ((spa = spa_lookup(zc->zc_name)) != NULL) {
1670 spa_configfile_set(spa, props, B_FALSE);
1671 spa_config_sync(spa, B_FALSE, B_TRUE);
1672 }
1673 mutex_exit(&spa_namespace_lock);
1674 if (spa != NULL)
1675 return (0);
1676 }
1677
1678 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
1679 nvlist_free(props);
1680 return (error);
1681 }
1682
1683 error = spa_prop_set(spa, props);
1684
1685 nvlist_free(props);
1686 spa_close(spa, FTAG);
1687
1688 return (error);
1689 }
1690
1691 static int
1692 zfs_ioc_pool_get_props(zfs_cmd_t *zc)
1693 {
1694 spa_t *spa;
1695 int error;
1696 nvlist_t *nvp = NULL;
1697
1698 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
1699 /*
1700 * If the pool is faulted, there may be properties we can still
1701 * get (such as altroot and cachefile), so attempt to get them
1702 * anyway.
1703 */
1704 mutex_enter(&spa_namespace_lock);
1705 if ((spa = spa_lookup(zc->zc_name)) != NULL)
1706 error = spa_prop_get(spa, &nvp);
1707 mutex_exit(&spa_namespace_lock);
1708 } else {
1709 error = spa_prop_get(spa, &nvp);
1710 spa_close(spa, FTAG);
1711 }
1712
1713 if (error == 0 && zc->zc_nvlist_dst != NULL)
1714 error = put_nvlist(zc, nvp);
1715 else
1716 error = EFAULT;
1717
1718 nvlist_free(nvp);
1719 return (error);
1720 }
1721
1722 static int
1723 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc)
1724 {
1725 nvlist_t *nvp;
1726 int error;
1727 uint32_t uid;
1728 uint32_t gid;
1729 uint32_t *groups;
1730 uint_t group_cnt;
1731 cred_t *usercred;
1732
1733 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1734 &nvp)) != 0) {
1735 return (error);
1736 }
1737
1738 if ((error = nvlist_lookup_uint32(nvp,
1739 ZFS_DELEG_PERM_UID, &uid)) != 0) {
1740 nvlist_free(nvp);
1741 return (EPERM);
1742 }
1743
1744 if ((error = nvlist_lookup_uint32(nvp,
1745 ZFS_DELEG_PERM_GID, &gid)) != 0) {
1746 nvlist_free(nvp);
1747 return (EPERM);
1748 }
1749
1750 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS,
1751 &groups, &group_cnt)) != 0) {
1752 nvlist_free(nvp);
1753 return (EPERM);
1754 }
1755 usercred = cralloc();
1756 if ((crsetugid(usercred, uid, gid) != 0) ||
1757 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) {
1758 nvlist_free(nvp);
1759 crfree(usercred);
1760 return (EPERM);
1761 }
1762 nvlist_free(nvp);
1763 error = dsl_deleg_access(zc->zc_name,
1764 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred);
1765 crfree(usercred);
1766 return (error);
1767 }
1768
1769 /*
1770 * inputs:
1771 * zc_name name of filesystem
1772 * zc_nvlist_src{_size} nvlist of delegated permissions
1773 * zc_perm_action allow/unallow flag
1774 *
1775 * outputs: none
1776 */
1777 static int
1778 zfs_ioc_set_fsacl(zfs_cmd_t *zc)
1779 {
1780 int error;
1781 nvlist_t *fsaclnv = NULL;
1782
1783 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1784 &fsaclnv)) != 0)
1785 return (error);
1786
1787 /*
1788 * Verify nvlist is constructed correctly
1789 */
1790 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
1791 nvlist_free(fsaclnv);
1792 return (EINVAL);
1793 }
1794
1795 /*
1796 * If we don't have PRIV_SYS_MOUNT, then validate
1797 * that user is allowed to hand out each permission in
1798 * the nvlist(s)
1799 */
1800
1801 error = secpolicy_zfs(CRED());
1802 if (error) {
1803 if (zc->zc_perm_action == B_FALSE) {
1804 error = dsl_deleg_can_allow(zc->zc_name,
1805 fsaclnv, CRED());
1806 } else {
1807 error = dsl_deleg_can_unallow(zc->zc_name,
1808 fsaclnv, CRED());
1809 }
1810 }
1811
1812 if (error == 0)
1813 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action);
1814
1815 nvlist_free(fsaclnv);
1816 return (error);
1817 }
1818
1819 /*
1820 * inputs:
1821 * zc_name name of filesystem
1822 *
1823 * outputs:
1824 * zc_nvlist_src{_size} nvlist of delegated permissions
1825 */
1826 static int
1827 zfs_ioc_get_fsacl(zfs_cmd_t *zc)
1828 {
1829 nvlist_t *nvp;
1830 int error;
1831
1832 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) {
1833 error = put_nvlist(zc, nvp);
1834 nvlist_free(nvp);
1835 }
1836
1837 return (error);
1838 }
1839
1840 /*
1841 * inputs:
1842 * zc_name name of volume
1843 *
1844 * outputs: none
1845 */
1846 static int
1847 zfs_ioc_create_minor(zfs_cmd_t *zc)
1848 {
1849 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip)));
1850 }
1851
1852 /*
1853 * inputs:
1854 * zc_name name of volume
1855 *
1856 * outputs: none
1857 */
1858 static int
1859 zfs_ioc_remove_minor(zfs_cmd_t *zc)
1860 {
1861 return (zvol_remove_minor(zc->zc_name));
1862 }
1863
1864 /*
1865 * Search the vfs list for a specified resource. Returns a pointer to it
1866 * or NULL if no suitable entry is found. The caller of this routine
1867 * is responsible for releasing the returned vfs pointer.
1868 */
1869 static vfs_t *
1870 zfs_get_vfs(const char *resource)
1871 {
1872 struct vfs *vfsp;
1873 struct vfs *vfs_found = NULL;
1874
1875 vfs_list_read_lock();
1876 vfsp = rootvfs;
1877 do {
1878 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) {
1879 VFS_HOLD(vfsp);
1880 vfs_found = vfsp;
1881 break;
1882 }
1883 vfsp = vfsp->vfs_next;
1884 } while (vfsp != rootvfs);
1885 vfs_list_unlock();
1886 return (vfs_found);
1887 }
1888
1889 /* ARGSUSED */
1890 static void
1891 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
1892 {
1893 zfs_creat_t *zct = arg;
1894
1895 zfs_create_fs(os, cr, zct->zct_zplprops, tx);
1896 }
1897
1898 #define ZFS_PROP_UNDEFINED ((uint64_t)-1)
1899
1900 /*
1901 * inputs:
1902 * createprops list of properties requested by creator
1903 * default_zplver zpl version to use if unspecified in createprops
1904 * fuids_ok fuids allowed in this version of the spa?
1905 * os parent objset pointer (NULL if root fs)
1906 *
1907 * outputs:
1908 * zplprops values for the zplprops we attach to the master node object
1909 * is_ci true if requested file system will be purely case-insensitive
1910 *
1911 * Determine the settings for utf8only, normalization and
1912 * casesensitivity. Specific values may have been requested by the
1913 * creator and/or we can inherit values from the parent dataset. If
1914 * the file system is of too early a vintage, a creator can not
1915 * request settings for these properties, even if the requested
1916 * setting is the default value. We don't actually want to create dsl
1917 * properties for these, so remove them from the source nvlist after
1918 * processing.
1919 */
1920 static int
1921 zfs_fill_zplprops_impl(objset_t *os, uint64_t default_zplver,
1922 boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops,
1923 boolean_t *is_ci)
1924 {
1925 uint64_t zplver = default_zplver;
1926 uint64_t sense = ZFS_PROP_UNDEFINED;
1927 uint64_t norm = ZFS_PROP_UNDEFINED;
1928 uint64_t u8 = ZFS_PROP_UNDEFINED;
1929
1930 ASSERT(zplprops != NULL);
1931
1932 /*
1933 * Pull out creator prop choices, if any.
1934 */
1935 if (createprops) {
1936 (void) nvlist_lookup_uint64(createprops,
1937 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver);
1938 (void) nvlist_lookup_uint64(createprops,
1939 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm);
1940 (void) nvlist_remove_all(createprops,
1941 zfs_prop_to_name(ZFS_PROP_NORMALIZE));
1942 (void) nvlist_lookup_uint64(createprops,
1943 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8);
1944 (void) nvlist_remove_all(createprops,
1945 zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
1946 (void) nvlist_lookup_uint64(createprops,
1947 zfs_prop_to_name(ZFS_PROP_CASE), &sense);
1948 (void) nvlist_remove_all(createprops,
1949 zfs_prop_to_name(ZFS_PROP_CASE));
1950 }
1951
1952 /*
1953 * If the zpl version requested is whacky or the file system
1954 * or pool is version is too "young" to support normalization
1955 * and the creator tried to set a value for one of the props,
1956 * error out.
1957 */
1958 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) ||
1959 (zplver >= ZPL_VERSION_FUID && !fuids_ok) ||
1960 (zplver < ZPL_VERSION_NORMALIZATION &&
1961 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
1962 sense != ZFS_PROP_UNDEFINED)))
1963 return (ENOTSUP);
1964
1965 /*
1966 * Put the version in the zplprops
1967 */
1968 VERIFY(nvlist_add_uint64(zplprops,
1969 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
1970
1971 if (norm == ZFS_PROP_UNDEFINED)
1972 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0);
1973 VERIFY(nvlist_add_uint64(zplprops,
1974 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
1975
1976 /*
1977 * If we're normalizing, names must always be valid UTF-8 strings.
1978 */
1979 if (norm)
1980 u8 = 1;
1981 if (u8 == ZFS_PROP_UNDEFINED)
1982 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0);
1983 VERIFY(nvlist_add_uint64(zplprops,
1984 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
1985
1986 if (sense == ZFS_PROP_UNDEFINED)
1987 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0);
1988 VERIFY(nvlist_add_uint64(zplprops,
1989 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
1990
1991 if (is_ci)
1992 *is_ci = (sense == ZFS_CASE_INSENSITIVE);
1993
1994 return (0);
1995 }
1996
1997 static int
1998 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
1999 nvlist_t *zplprops, boolean_t *is_ci)
2000 {
2001 boolean_t fuids_ok = B_TRUE;
2002 uint64_t zplver = ZPL_VERSION;
2003 objset_t *os = NULL;
2004 char parentname[MAXNAMELEN];
2005 char *cp;
2006 int error;
2007
2008 (void) strlcpy(parentname, dataset, sizeof (parentname));
2009 cp = strrchr(parentname, '/');
2010 ASSERT(cp != NULL);
2011 cp[0] = '\0';
2012
2013 if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) {
2014 zplver = ZPL_VERSION_FUID - 1;
2015 fuids_ok = B_FALSE;
2016 }
2017
2018 /*
2019 * Open parent object set so we can inherit zplprop values.
2020 */
2021 if ((error = dmu_objset_open(parentname, DMU_OST_ANY,
2022 DS_MODE_USER | DS_MODE_READONLY, &os)) != 0)
2023 return (error);
2024
2025 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops,
2026 zplprops, is_ci);
2027 dmu_objset_close(os);
2028 return (error);
2029 }
2030
2031 static int
2032 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops,
2033 nvlist_t *zplprops, boolean_t *is_ci)
2034 {
2035 boolean_t fuids_ok = B_TRUE;
2036 uint64_t zplver = ZPL_VERSION;
2037 int error;
2038
2039 if (spa_vers < SPA_VERSION_FUID) {
2040 zplver = ZPL_VERSION_FUID - 1;
2041 fuids_ok = B_FALSE;
2042 }
2043
2044 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops,
2045 zplprops, is_ci);
2046 return (error);
2047 }
2048
2049 /*
2050 * inputs:
2051 * zc_objset_type type of objset to create (fs vs zvol)
2052 * zc_name name of new objset
2053 * zc_value name of snapshot to clone from (may be empty)
2054 * zc_nvlist_src{_size} nvlist of properties to apply
2055 *
2056 * outputs: none
2057 */
2058 static int
2059 zfs_ioc_create(zfs_cmd_t *zc)
2060 {
2061 objset_t *clone;
2062 int error = 0;
2063 zfs_creat_t zct;
2064 nvlist_t *nvprops = NULL;
2065 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
2066 dmu_objset_type_t type = zc->zc_objset_type;
2067
2068 switch (type) {
2069
2070 case DMU_OST_ZFS:
2071 cbfunc = zfs_create_cb;
2072 break;
2073
2074 case DMU_OST_ZVOL:
2075 cbfunc = zvol_create_cb;
2076 break;
2077
2078 default:
2079 cbfunc = NULL;
2080 break;
2081 }
2082 if (strchr(zc->zc_name, '@') ||
2083 strchr(zc->zc_name, '%'))
2084 return (EINVAL);
2085
2086 if (zc->zc_nvlist_src != NULL &&
2087 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2088 &nvprops)) != 0)
2089 return (error);
2090
2091 zct.zct_zplprops = NULL;
2092 zct.zct_props = nvprops;
2093
2094 if (zc->zc_value[0] != '\0') {
2095 /*
2096 * We're creating a clone of an existing snapshot.
2097 */
2098 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
2099 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) {
2100 nvlist_free(nvprops);
2101 return (EINVAL);
2102 }
2103
2104 error = dmu_objset_open(zc->zc_value, type,
2105 DS_MODE_USER | DS_MODE_READONLY, &clone);
2106 if (error) {
2107 nvlist_free(nvprops);
2108 return (error);
2109 }
2110
2111 error = dmu_objset_create(zc->zc_name, type, clone, 0,
2112 NULL, NULL);
2113 if (error) {
2114 dmu_objset_close(clone);
2115 nvlist_free(nvprops);
2116 return (error);
2117 }
2118 dmu_objset_close(clone);
2119 } else {
2120 boolean_t is_insensitive = B_FALSE;
2121
2122 if (cbfunc == NULL) {
2123 nvlist_free(nvprops);
2124 return (EINVAL);
2125 }
2126
2127 if (type == DMU_OST_ZVOL) {
2128 uint64_t volsize, volblocksize;
2129
2130 if (nvprops == NULL ||
2131 nvlist_lookup_uint64(nvprops,
2132 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
2133 &volsize) != 0) {
2134 nvlist_free(nvprops);
2135 return (EINVAL);
2136 }
2137
2138 if ((error = nvlist_lookup_uint64(nvprops,
2139 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
2140 &volblocksize)) != 0 && error != ENOENT) {
2141 nvlist_free(nvprops);
2142 return (EINVAL);
2143 }
2144
2145 if (error != 0)
2146 volblocksize = zfs_prop_default_numeric(
2147 ZFS_PROP_VOLBLOCKSIZE);
2148
2149 if ((error = zvol_check_volblocksize(
2150 volblocksize)) != 0 ||
2151 (error = zvol_check_volsize(volsize,
2152 volblocksize)) != 0) {
2153 nvlist_free(nvprops);
2154 return (error);
2155 }
2156 } else if (type == DMU_OST_ZFS) {
2157 int error;
2158
2159 /*
2160 * We have to have normalization and
2161 * case-folding flags correct when we do the
2162 * file system creation, so go figure them out
2163 * now.
2164 */
2165 VERIFY(nvlist_alloc(&zct.zct_zplprops,
2166 NV_UNIQUE_NAME, KM_SLEEP) == 0);
2167 error = zfs_fill_zplprops(zc->zc_name, nvprops,
2168 zct.zct_zplprops, &is_insensitive);
2169 if (error != 0) {
2170 nvlist_free(nvprops);
2171 nvlist_free(zct.zct_zplprops);
2172 return (error);
2173 }
2174 }
2175 error = dmu_objset_create(zc->zc_name, type, NULL,
2176 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
2177 nvlist_free(zct.zct_zplprops);
2178 }
2179
2180 /*
2181 * It would be nice to do this atomically.
2182 */
2183 if (error == 0) {
2184 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0)
2185 (void) dmu_objset_destroy(zc->zc_name);
2186 }
2187 nvlist_free(nvprops);
2188 return (error);
2189 }
2190
2191 struct snap_prop_arg {
2192 nvlist_t *nvprops;
2193 const char *snapname;
2194 };
2195
2196 static int
2197 set_snap_props(char *name, void *arg)
2198 {
2199 struct snap_prop_arg *snpa = arg;
2200 int len = strlen(name) + strlen(snpa->snapname) + 2;
2201 char *buf = kmem_alloc(len, KM_SLEEP);
2202 int err;
2203
2204 (void) snprintf(buf, len, "%s@%s", name, snpa->snapname);
2205 err = zfs_set_prop_nvlist(buf, snpa->nvprops);
2206 if (err)
2207 (void) dmu_objset_destroy(buf);
2208 kmem_free(buf, len);
2209 return (err);
2210 }
2211
2212 /*
2213 * inputs:
2214 * zc_name name of filesystem
2215 * zc_value short name of snapshot
2216 * zc_cookie recursive flag
2217 *
2218 * outputs: none
2219 */
2220 static int
2221 zfs_ioc_snapshot(zfs_cmd_t *zc)
2222 {
2223 nvlist_t *nvprops = NULL;
2224 int error;
2225 boolean_t recursive = zc->zc_cookie;
2226
2227 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
2228 return (EINVAL);
2229
2230 if (zc->zc_nvlist_src != NULL &&
2231 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2232 &nvprops)) != 0)
2233 return (error);
2234
2235 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, recursive);
2236
2237 /*
2238 * It would be nice to do this atomically.
2239 */
2240 if (error == 0) {
2241 struct snap_prop_arg snpa;
2242 snpa.nvprops = nvprops;
2243 snpa.snapname = zc->zc_value;
2244 if (recursive) {
2245 error = dmu_objset_find(zc->zc_name,
2246 set_snap_props, &snpa, DS_FIND_CHILDREN);
2247 if (error) {
2248 (void) dmu_snapshots_destroy(zc->zc_name,
2249 zc->zc_value);
2250 }
2251 } else {
2252 error = set_snap_props(zc->zc_name, &snpa);
2253 }
2254 }
2255 nvlist_free(nvprops);
2256 return (error);
2257 }
2258
2259 int
2260 zfs_unmount_snap(char *name, void *arg)
2261 {
2262 vfs_t *vfsp = NULL;
2263
2264 if (arg) {
2265 char *snapname = arg;
2266 int len = strlen(name) + strlen(snapname) + 2;
2267 char *buf = kmem_alloc(len, KM_SLEEP);
2268
2269 (void) strcpy(buf, name);
2270 (void) strcat(buf, "@");
2271 (void) strcat(buf, snapname);
2272 vfsp = zfs_get_vfs(buf);
2273 kmem_free(buf, len);
2274 } else if (strchr(name, '@')) {
2275 vfsp = zfs_get_vfs(name);
2276 }
2277
2278 if (vfsp) {
2279 /*
2280 * Always force the unmount for snapshots.
2281 */
2282 int flag = MS_FORCE;
2283 int err;
2284
2285 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) {
2286 VFS_RELE(vfsp);
2287 return (err);
2288 }
2289 VFS_RELE(vfsp);
2290 if ((err = dounmount(vfsp, flag, kcred)) != 0)
2291 return (err);
2292 }
2293 return (0);
2294 }
2295
2296 /*
2297 * inputs:
2298 * zc_name name of filesystem
2299 * zc_value short name of snapshot
2300 *
2301 * outputs: none
2302 */
2303 static int
2304 zfs_ioc_destroy_snaps(zfs_cmd_t *zc)
2305 {
2306 int err;
2307
2308 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
2309 return (EINVAL);
2310 err = dmu_objset_find(zc->zc_name,
2311 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN);
2312 if (err)
2313 return (err);
2314 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value));
2315 }
2316
2317 /*
2318 * inputs:
2319 * zc_name name of dataset to destroy
2320 * zc_objset_type type of objset
2321 *
2322 * outputs: none
2323 */
2324 static int
2325 zfs_ioc_destroy(zfs_cmd_t *zc)
2326 {
2327 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) {
2328 int err = zfs_unmount_snap(zc->zc_name, NULL);
2329 if (err)
2330 return (err);
2331 }
2332
2333 return (dmu_objset_destroy(zc->zc_name));
2334 }
2335
2336 /*
2337 * inputs:
2338 * zc_name name of dataset to rollback (to most recent snapshot)
2339 *
2340 * outputs: none
2341 */
2342 static int
2343 zfs_ioc_rollback(zfs_cmd_t *zc)
2344 {
2345 objset_t *os;
2346 int error;
2347 zfsvfs_t *zfsvfs = NULL;
2348
2349 /*
2350 * Get the zfsvfs for the receiving objset. There
2351 * won't be one if we're operating on a zvol, if the
2352 * objset doesn't exist yet, or is not mounted.
2353 */
2354 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os);
2355 if (error)
2356 return (error);
2357
2358 if (dmu_objset_type(os) == DMU_OST_ZFS) {
2359 mutex_enter(&os->os->os_user_ptr_lock);
2360 zfsvfs = dmu_objset_get_user(os);
2361 if (zfsvfs != NULL)
2362 VFS_HOLD(zfsvfs->z_vfs);
2363 mutex_exit(&os->os->os_user_ptr_lock);
2364 }
2365
2366 if (zfsvfs != NULL) {
2367 char *osname;
2368 int mode;
2369
2370 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
2371 error = zfs_suspend_fs(zfsvfs, osname, &mode);
2372 if (error == 0) {
2373 int resume_err;
2374
2375 ASSERT(strcmp(osname, zc->zc_name) == 0);
2376 error = dmu_objset_rollback(os);
2377 resume_err = zfs_resume_fs(zfsvfs, osname, mode);
2378 error = error ? error : resume_err;
2379 } else {
2380 dmu_objset_close(os);
2381 }
2382 kmem_free(osname, MAXNAMELEN);
2383 VFS_RELE(zfsvfs->z_vfs);
2384 } else {
2385 error = dmu_objset_rollback(os);
2386 }
2387 /* Note, the dmu_objset_rollback() releases the objset for us. */
2388
2389 return (error);
2390 }
2391
2392 /*
2393 * inputs:
2394 * zc_name old name of dataset
2395 * zc_value new name of dataset
2396 * zc_cookie recursive flag (only valid for snapshots)
2397 *
2398 * outputs: none
2399 */
2400 static int
2401 zfs_ioc_rename(zfs_cmd_t *zc)
2402 {
2403 boolean_t recursive = zc->zc_cookie & 1;
2404
2405 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
2406 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
2407 strchr(zc->zc_value, '%'))
2408 return (EINVAL);
2409
2410 /*
2411 * Unmount snapshot unless we're doing a recursive rename,
2412 * in which case the dataset code figures out which snapshots
2413 * to unmount.
2414 */
2415 if (!recursive && strchr(zc->zc_name, '@') != NULL &&
2416 zc->zc_objset_type == DMU_OST_ZFS) {
2417 int err = zfs_unmount_snap(zc->zc_name, NULL);
2418 if (err)
2419 return (err);
2420 }
2421 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive));
2422 }
2423
2424 static void
2425 clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops)
2426 {
2427 zfs_cmd_t *zc;
2428 nvpair_t *prop;
2429
2430 if (props == NULL)
2431 return;
2432 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP);
2433 (void) strcpy(zc->zc_name, dataset);
2434 for (prop = nvlist_next_nvpair(props, NULL); prop;
2435 prop = nvlist_next_nvpair(props, prop)) {
2436 if (newprops != NULL &&
2437 nvlist_exists(newprops, nvpair_name(prop)))
2438 continue;
2439 (void) strcpy(zc->zc_value, nvpair_name(prop));
2440 if (zfs_secpolicy_inherit(zc, CRED()) == 0)
2441 (void) zfs_ioc_inherit_prop(zc);
2442 }
2443 kmem_free(zc, sizeof (zfs_cmd_t));
2444 }
2445
2446 /*
2447 * inputs:
2448 * zc_name name of containing filesystem
2449 * zc_nvlist_src{_size} nvlist of properties to apply
2450 * zc_value name of snapshot to create
2451 * zc_string name of clone origin (if DRR_FLAG_CLONE)
2452 * zc_cookie file descriptor to recv from
2453 * zc_begin_record the BEGIN record of the stream (not byteswapped)
2454 * zc_guid force flag
2455 *
2456 * outputs:
2457 * zc_cookie number of bytes read
2458 */
2459 static int
2460 zfs_ioc_recv(zfs_cmd_t *zc)
2461 {
2462 file_t *fp;
2463 objset_t *os;
2464 dmu_recv_cookie_t drc;
2465 zfsvfs_t *zfsvfs = NULL;
2466 boolean_t force = (boolean_t)zc->zc_guid;
2467 int error, fd;
2468 offset_t off;
2469 nvlist_t *props = NULL;
2470 nvlist_t *origprops = NULL;
2471 objset_t *origin = NULL;
2472 char *tosnap;
2473 char tofs[ZFS_MAXNAMELEN];
2474
2475 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
2476 strchr(zc->zc_value, '@') == NULL ||
2477 strchr(zc->zc_value, '%'))
2478 return (EINVAL);
2479
2480 (void) strcpy(tofs, zc->zc_value);
2481 tosnap = strchr(tofs, '@');
2482 *tosnap = '\0';
2483 tosnap++;
2484
2485 if (zc->zc_nvlist_src != NULL &&
2486 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2487 &props)) != 0)
2488 return (error);
2489
2490 fd = zc->zc_cookie;
2491 fp = getf(fd);
2492 if (fp == NULL) {
2493 nvlist_free(props);
2494 return (EBADF);
2495 }
2496
2497 if (dmu_objset_open(tofs, DMU_OST_ANY,
2498 DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
2499 /*
2500 * Try to get the zfsvfs for the receiving objset.
2501 * There won't be one if we're operating on a zvol,
2502 * if the objset doesn't exist yet, or is not mounted.
2503 */
2504 mutex_enter(&os->os->os_user_ptr_lock);
2505 if (zfsvfs = dmu_objset_get_user(os)) {
2506 if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) {
2507 mutex_exit(&os->os->os_user_ptr_lock);
2508 dmu_objset_close(os);
2509 zfsvfs = NULL;
2510 error = EBUSY;
2511 goto out;
2512 }
2513 VFS_HOLD(zfsvfs->z_vfs);
2514 }
2515 mutex_exit(&os->os->os_user_ptr_lock);
2516
2517 /*
2518 * If new properties are supplied, they are to completely
2519 * replace the existing ones, so stash away the existing ones.
2520 */
2521 if (props)
2522 (void) dsl_prop_get_all(os, &origprops, TRUE);
2523
2524 dmu_objset_close(os);
2525 }
2526
2527 if (zc->zc_string[0]) {
2528 error = dmu_objset_open(zc->zc_string, DMU_OST_ANY,
2529 DS_MODE_USER | DS_MODE_READONLY, &origin);
2530 if (error)
2531 goto out;
2532 }
2533
2534 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record,
2535 force, origin, zfsvfs != NULL, &drc);
2536 if (origin)
2537 dmu_objset_close(origin);
2538 if (error)
2539 goto out;
2540
2541 /*
2542 * Reset properties. We do this before we receive the stream
2543 * so that the properties are applied to the new data.
2544 */
2545 if (props) {
2546 clear_props(tofs, origprops, props);
2547 /*
2548 * XXX - Note, this is all-or-nothing; should be best-effort.
2549 */
2550 (void) zfs_set_prop_nvlist(tofs, props);
2551 }
2552
2553 off = fp->f_offset;
2554 error = dmu_recv_stream(&drc, fp->f_vnode, &off);
2555
2556 if (error == 0 && zfsvfs) {
2557 char *osname;
2558 int mode;
2559
2560 /* online recv */
2561 osname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
2562 error = zfs_suspend_fs(zfsvfs, osname, &mode);
2563 if (error == 0) {
2564 int resume_err;
2565
2566 error = dmu_recv_end(&drc);
2567 resume_err = zfs_resume_fs(zfsvfs, osname, mode);
2568 error = error ? error : resume_err;
2569 } else {
2570 dmu_recv_abort_cleanup(&drc);
2571 }
2572 kmem_free(osname, MAXNAMELEN);
2573 } else if (error == 0) {
2574 error = dmu_recv_end(&drc);
2575 }
2576
2577 zc->zc_cookie = off - fp->f_offset;
2578 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
2579 fp->f_offset = off;
2580
2581 /*
2582 * On error, restore the original props.
2583 */
2584 if (error && props) {
2585 clear_props(tofs, props, NULL);
2586 (void) zfs_set_prop_nvlist(tofs, origprops);
2587 }
2588 out:
2589 if (zfsvfs) {
2590 mutex_exit(&zfsvfs->z_online_recv_lock);
2591 VFS_RELE(zfsvfs->z_vfs);
2592 }
2593 nvlist_free(props);
2594 nvlist_free(origprops);
2595 releasef(fd);
2596 return (error);
2597 }
2598
2599 /*
2600 * inputs:
2601 * zc_name name of snapshot to send
2602 * zc_value short name of incremental fromsnap (may be empty)
2603 * zc_cookie file descriptor to send stream to
2604 * zc_obj fromorigin flag (mutually exclusive with zc_value)
2605 *
2606 * outputs: none
2607 */
2608 static int
2609 zfs_ioc_send(zfs_cmd_t *zc)
2610 {
2611 objset_t *fromsnap = NULL;
2612 objset_t *tosnap;
2613 file_t *fp;
2614 int error;
2615 offset_t off;
2616
2617 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY,
2618 DS_MODE_USER | DS_MODE_READONLY, &tosnap);
2619 if (error)
2620 return (error);
2621
2622 if (zc->zc_value[0] != '\0') {
2623 char *buf;
2624 char *cp;
2625
2626 buf = kmem_alloc(MAXPATHLEN, KM_SLEEP);
2627 (void) strncpy(buf, zc->zc_name, MAXPATHLEN);
2628 cp = strchr(buf, '@');
2629 if (cp)
2630 *(cp+1) = 0;
2631 (void) strncat(buf, zc->zc_value, MAXPATHLEN);
2632 error = dmu_objset_open(buf, DMU_OST_ANY,
2633 DS_MODE_USER | DS_MODE_READONLY, &fromsnap);
2634 kmem_free(buf, MAXPATHLEN);
2635 if (error) {
2636 dmu_objset_close(tosnap);
2637 return (error);
2638 }
2639 }
2640
2641 fp = getf(zc->zc_cookie);
2642 if (fp == NULL) {
2643 dmu_objset_close(tosnap);
2644 if (fromsnap)
2645 dmu_objset_close(fromsnap);
2646 return (EBADF);
2647 }
2648
2649 off = fp->f_offset;
2650 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off);
2651
2652 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
2653 fp->f_offset = off;
2654 releasef(zc->zc_cookie);
2655 if (fromsnap)
2656 dmu_objset_close(fromsnap);
2657 dmu_objset_close(tosnap);
2658 return (error);
2659 }
2660
2661 static int
2662 zfs_ioc_inject_fault(zfs_cmd_t *zc)
2663 {
2664 int id, error;
2665
2666 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id,
2667 &zc->zc_inject_record);
2668
2669 if (error == 0)
2670 zc->zc_guid = (uint64_t)id;
2671
2672 return (error);
2673 }
2674
2675 static int
2676 zfs_ioc_clear_fault(zfs_cmd_t *zc)
2677 {
2678 return (zio_clear_fault((int)zc->zc_guid));
2679 }
2680
2681 static int
2682 zfs_ioc_inject_list_next(zfs_cmd_t *zc)
2683 {
2684 int id = (int)zc->zc_guid;
2685 int error;
2686
2687 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name),
2688 &zc->zc_inject_record);
2689
2690 zc->zc_guid = id;
2691
2692 return (error);
2693 }
2694
2695 static int
2696 zfs_ioc_error_log(zfs_cmd_t *zc)
2697 {
2698 spa_t *spa;
2699 int error;
2700 size_t count = (size_t)zc->zc_nvlist_dst_size;
2701
2702 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
2703 return (error);
2704
2705 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst,
2706 &count);
2707 if (error == 0)
2708 zc->zc_nvlist_dst_size = count;
2709 else
2710 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa);
2711
2712 spa_close(spa, FTAG);
2713
2714 return (error);
2715 }
2716
2717 static int
2718 zfs_ioc_clear(zfs_cmd_t *zc)
2719 {
2720 spa_t *spa;
2721 vdev_t *vd;
2722 int error;
2723
2724 /*
2725 * On zpool clear we also fix up missing slogs
2726 */
2727 mutex_enter(&spa_namespace_lock);
2728 spa = spa_lookup(zc->zc_name);
2729 if (spa == NULL) {
2730 mutex_exit(&spa_namespace_lock);
2731 return (EIO);
2732 }
2733 if (spa->spa_log_state == SPA_LOG_MISSING) {
2734 /* we need to let spa_open/spa_load clear the chains */
2735 spa->spa_log_state = SPA_LOG_CLEAR;
2736 }
2737 mutex_exit(&spa_namespace_lock);
2738
2739 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
2740 return (error);
2741
2742 spa_vdev_state_enter(spa);
2743
2744 if (zc->zc_guid == 0) {
2745 vd = NULL;
2746 } else {
2747 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE);
2748 if (vd == NULL) {
2749 (void) spa_vdev_state_exit(spa, NULL, ENODEV);
2750 spa_close(spa, FTAG);
2751 return (ENODEV);
2752 }
2753 }
2754
2755 vdev_clear(spa, vd);
2756
2757 (void) spa_vdev_state_exit(spa, NULL, 0);
2758
2759 /*
2760 * Resume any suspended I/Os.
2761 */
2762 zio_resume(spa);
2763
2764 spa_close(spa, FTAG);
2765
2766 return (0);
2767 }
2768
2769 /*
2770 * inputs:
2771 * zc_name name of filesystem
2772 * zc_value name of origin snapshot
2773 *
2774 * outputs: none
2775 */
2776 static int
2777 zfs_ioc_promote(zfs_cmd_t *zc)
2778 {
2779 char *cp;
2780
2781 /*
2782 * We don't need to unmount *all* the origin fs's snapshots, but
2783 * it's easier.
2784 */
2785 cp = strchr(zc->zc_value, '@');
2786 if (cp)
2787 *cp = '\0';
2788 (void) dmu_objset_find(zc->zc_value,
2789 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS);
2790 return (dsl_dataset_promote(zc->zc_name));
2791 }
2792
2793 /*
2794 * We don't want to have a hard dependency
2795 * against some special symbols in sharefs
2796 * nfs, and smbsrv. Determine them if needed when
2797 * the first file system is shared.
2798 * Neither sharefs, nfs or smbsrv are unloadable modules.
2799 */
2800 int (*znfsexport_fs)(void *arg);
2801 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t);
2802 int (*zsmbexport_fs)(void *arg, boolean_t add_share);
2803
2804 int zfs_nfsshare_inited;
2805 int zfs_smbshare_inited;
2806
2807 ddi_modhandle_t nfs_mod;
2808 ddi_modhandle_t sharefs_mod;
2809 ddi_modhandle_t smbsrv_mod;
2810 kmutex_t zfs_share_lock;
2811
2812 static int
2813 zfs_init_sharefs()
2814 {
2815 int error;
2816
2817 ASSERT(MUTEX_HELD(&zfs_share_lock));
2818 /* Both NFS and SMB shares also require sharetab support. */
2819 if (sharefs_mod == NULL && ((sharefs_mod =
2820 ddi_modopen("fs/sharefs",
2821 KRTLD_MODE_FIRST, &error)) == NULL)) {
2822 return (ENOSYS);
2823 }
2824 if (zshare_fs == NULL && ((zshare_fs =
2825 (int (*)(enum sharefs_sys_op, share_t *, uint32_t))
2826 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) {
2827 return (ENOSYS);
2828 }
2829 return (0);
2830 }
2831
2832 static int
2833 zfs_ioc_share(zfs_cmd_t *zc)
2834 {
2835 int error;
2836 int opcode;
2837
2838 switch (zc->zc_share.z_sharetype) {
2839 case ZFS_SHARE_NFS:
2840 case ZFS_UNSHARE_NFS:
2841 if (zfs_nfsshare_inited == 0) {
2842 mutex_enter(&zfs_share_lock);
2843 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs",
2844 KRTLD_MODE_FIRST, &error)) == NULL)) {
2845 mutex_exit(&zfs_share_lock);
2846 return (ENOSYS);
2847 }
2848 if (znfsexport_fs == NULL &&
2849 ((znfsexport_fs = (int (*)(void *))
2850 ddi_modsym(nfs_mod,
2851 "nfs_export", &error)) == NULL)) {
2852 mutex_exit(&zfs_share_lock);
2853 return (ENOSYS);
2854 }
2855 error = zfs_init_sharefs();
2856 if (error) {
2857 mutex_exit(&zfs_share_lock);
2858 return (ENOSYS);
2859 }
2860 zfs_nfsshare_inited = 1;
2861 mutex_exit(&zfs_share_lock);
2862 }
2863 break;
2864 case ZFS_SHARE_SMB:
2865 case ZFS_UNSHARE_SMB:
2866 if (zfs_smbshare_inited == 0) {
2867 mutex_enter(&zfs_share_lock);
2868 if (smbsrv_mod == NULL && ((smbsrv_mod =
2869 ddi_modopen("drv/smbsrv",
2870 KRTLD_MODE_FIRST, &error)) == NULL)) {
2871 mutex_exit(&zfs_share_lock);
2872 return (ENOSYS);
2873 }
2874 if (zsmbexport_fs == NULL && ((zsmbexport_fs =
2875 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod,
2876 "smb_server_share", &error)) == NULL)) {
2877 mutex_exit(&zfs_share_lock);
2878 return (ENOSYS);
2879 }
2880 error = zfs_init_sharefs();
2881 if (error) {
2882 mutex_exit(&zfs_share_lock);
2883 return (ENOSYS);
2884 }
2885 zfs_smbshare_inited = 1;
2886 mutex_exit(&zfs_share_lock);
2887 }
2888 break;
2889 default:
2890 return (EINVAL);
2891 }
2892
2893 switch (zc->zc_share.z_sharetype) {
2894 case ZFS_SHARE_NFS:
2895 case ZFS_UNSHARE_NFS:
2896 if (error =
2897 znfsexport_fs((void *)
2898 (uintptr_t)zc->zc_share.z_exportdata))
2899 return (error);
2900 break;
2901 case ZFS_SHARE_SMB:
2902 case ZFS_UNSHARE_SMB:
2903 if (error = zsmbexport_fs((void *)
2904 (uintptr_t)zc->zc_share.z_exportdata,
2905 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ?
2906 B_TRUE : B_FALSE)) {
2907 return (error);
2908 }
2909 break;
2910 }
2911
2912 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS ||
2913 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ?
2914 SHAREFS_ADD : SHAREFS_REMOVE;
2915
2916 /*
2917 * Add or remove share from sharetab
2918 */
2919 error = zshare_fs(opcode,
2920 (void *)(uintptr_t)zc->zc_share.z_sharedata,
2921 zc->zc_share.z_sharemax);
2922
2923 return (error);
2924
2925 }
2926
2927 /*
2928 * pool create, destroy, and export don't log the history as part of
2929 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export
2930 * do the logging of those commands.
2931 */
2932 static zfs_ioc_vec_t zfs_ioc_vec[] = {
2933 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2934 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2935 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2936 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2937 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE },
2938 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE },
2939 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE },
2940 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2941 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE },
2942 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2943 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2944 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2945 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2946 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2947 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2948 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2949 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2950 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
2951 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
2952 { zfs_ioc_dataset_list_next, zfs_secpolicy_read,
2953 DATASET_NAME, B_FALSE },
2954 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read,
2955 DATASET_NAME, B_FALSE },
2956 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE },
2957 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE },
2958 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE },
2959 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE },
2960 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE },
2961 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE },
2962 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE },
2963 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE },
2964 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE },
2965 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE },
2966 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE },
2967 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE },
2968 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE },
2969 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2970 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE },
2971 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE },
2972 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE },
2973 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2974 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE },
2975 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2976 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE },
2977 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE },
2978 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
2979 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi,
2980 DATASET_NAME, B_FALSE },
2981 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE },
2982 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE },
2983 };
2984
2985 static int
2986 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp)
2987 {
2988 zfs_cmd_t *zc;
2989 uint_t vec;
2990 int error, rc;
2991
2992 if (getminor(dev) != 0)
2993 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp));
2994
2995 vec = cmd - ZFS_IOC;
2996 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip));
2997
2998 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
2999 return (EINVAL);
3000
3001 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
3002
3003 error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t));
3004
3005 if (error == 0)
3006 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr);
3007
3008 /*
3009 * Ensure that all pool/dataset names are valid before we pass down to
3010 * the lower layers.
3011 */
3012 if (error == 0) {
3013 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
3014 switch (zfs_ioc_vec[vec].zvec_namecheck) {
3015 case POOL_NAME:
3016 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
3017 error = EINVAL;
3018 break;
3019
3020 case DATASET_NAME:
3021 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
3022 error = EINVAL;
3023 break;
3024
3025 case NO_NAME:
3026 break;
3027 }
3028 }
3029
3030 if (error == 0)
3031 error = zfs_ioc_vec[vec].zvec_func(zc);
3032
3033 rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t));
3034 if (error == 0) {
3035 error = rc;
3036 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE)
3037 zfs_log_history(zc);
3038 }
3039
3040 kmem_free(zc, sizeof (zfs_cmd_t));
3041 return (error);
3042 }
3043
3044 static int
3045 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
3046 {
3047 if (cmd != DDI_ATTACH)
3048 return (DDI_FAILURE);
3049
3050 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0,
3051 DDI_PSEUDO, 0) == DDI_FAILURE)
3052 return (DDI_FAILURE);
3053
3054 zfs_dip = dip;
3055
3056 ddi_report_dev(dip);
3057
3058 return (DDI_SUCCESS);
3059 }
3060
3061 static int
3062 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
3063 {
3064 if (spa_busy() || zfs_busy() || zvol_busy())
3065 return (DDI_FAILURE);
3066
3067 if (cmd != DDI_DETACH)
3068 return (DDI_FAILURE);
3069
3070 zfs_dip = NULL;
3071
3072 ddi_prop_remove_all(dip);
3073 ddi_remove_minor_node(dip, NULL);
3074
3075 return (DDI_SUCCESS);
3076 }
3077
3078 /*ARGSUSED*/
3079 static int
3080 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
3081 {
3082 switch (infocmd) {
3083 case DDI_INFO_DEVT2DEVINFO:
3084 *result = zfs_dip;
3085 return (DDI_SUCCESS);
3086
3087 case DDI_INFO_DEVT2INSTANCE:
3088 *result = (void *)0;
3089 return (DDI_SUCCESS);
3090 }
3091
3092 return (DDI_FAILURE);
3093 }
3094
3095 /*
3096 * OK, so this is a little weird.
3097 *
3098 * /dev/zfs is the control node, i.e. minor 0.
3099 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0.
3100 *
3101 * /dev/zfs has basically nothing to do except serve up ioctls,
3102 * so most of the standard driver entry points are in zvol.c.
3103 */
3104 static struct cb_ops zfs_cb_ops = {
3105 zvol_open, /* open */
3106 zvol_close, /* close */
3107 zvol_strategy, /* strategy */
3108 nodev, /* print */
3109 zvol_dump, /* dump */
3110 zvol_read, /* read */
3111 zvol_write, /* write */
3112 zfsdev_ioctl, /* ioctl */
3113 nodev, /* devmap */
3114 nodev, /* mmap */
3115 nodev, /* segmap */
3116 nochpoll, /* poll */
3117 ddi_prop_op, /* prop_op */
3118 NULL, /* streamtab */
3119 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */
3120 CB_REV, /* version */
3121 nodev, /* async read */
3122 nodev, /* async write */
3123 };
3124
3125 static struct dev_ops zfs_dev_ops = {
3126 DEVO_REV, /* version */
3127 0, /* refcnt */
3128 zfs_info, /* info */
3129 nulldev, /* identify */
3130 nulldev, /* probe */
3131 zfs_attach, /* attach */
3132 zfs_detach, /* detach */
3133 nodev, /* reset */
3134 &zfs_cb_ops, /* driver operations */
3135 NULL, /* no bus operations */
3136 NULL, /* power */
3137 ddi_quiesce_not_needed, /* quiesce */
3138 };
3139
3140 static struct modldrv zfs_modldrv = {
3141 &mod_driverops,
3142 "ZFS storage pool",
3143 &zfs_dev_ops
3144 };
3145
3146 static struct modlinkage modlinkage = {
3147 MODREV_1,
3148 (void *)&zfs_modlfs,
3149 (void *)&zfs_modldrv,
3150 NULL
3151 };
3152
3153
3154 uint_t zfs_fsyncer_key;
3155 extern uint_t rrw_tsd_key;
3156
3157 int
3158 _init(void)
3159 {
3160 int error;
3161
3162 spa_init(FREAD | FWRITE);
3163 zfs_init();
3164 zvol_init();
3165
3166 if ((error = mod_install(&modlinkage)) != 0) {
3167 zvol_fini();
3168 zfs_fini();
3169 spa_fini();
3170 return (error);
3171 }
3172
3173 tsd_create(&zfs_fsyncer_key, NULL);
3174 tsd_create(&rrw_tsd_key, NULL);
3175
3176 error = ldi_ident_from_mod(&modlinkage, &zfs_li);
3177 ASSERT(error == 0);
3178 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL);
3179
3180 return (0);
3181 }
3182
3183 int
3184 _fini(void)
3185 {
3186 int error;
3187
3188 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled)
3189 return (EBUSY);
3190
3191 if ((error = mod_remove(&modlinkage)) != 0)
3192 return (error);
3193
3194 zvol_fini();
3195 zfs_fini();
3196 spa_fini();
3197 if (zfs_nfsshare_inited)
3198 (void) ddi_modclose(nfs_mod);
3199 if (zfs_smbshare_inited)
3200 (void) ddi_modclose(smbsrv_mod);
3201 if (zfs_nfsshare_inited || zfs_smbshare_inited)
3202 (void) ddi_modclose(sharefs_mod);
3203
3204 tsd_destroy(&zfs_fsyncer_key);
3205 ldi_ident_release(zfs_li);
3206 zfs_li = NULL;
3207 mutex_destroy(&zfs_share_lock);
3208
3209 return (error);
3210 }
3211
3212 int
3213 _info(struct modinfo *modinfop)
3214 {
3215 return (mod_info(&modlinkage, modinfop));
3216 }
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