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.
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.
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]
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011-2012 Pawel Jakub Dawidek <pawel@dawidek.net>.
25 * All rights reserved.
26 * Copyright 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
27 * Copyright 2014 Xin Li <delphij@FreeBSD.org>. All rights reserved.
28 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
29 * Copyright (c) 2014, Joyent, Inc. All rights reserved.
30 * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
31 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
32 * Copyright (c) 2013 Steven Hartland. All rights reserved.
33 * Copyright (c) 2014, Nexenta Systems, Inc. All rights reserved.
39 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage
40 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool.
42 * There are two ways that we handle ioctls: the legacy way where almost
43 * all of the logic is in the ioctl callback, and the new way where most
44 * of the marshalling is handled in the common entry point, zfsdev_ioctl().
46 * Non-legacy ioctls should be registered by calling
47 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked
48 * from userland by lzc_ioctl().
50 * The registration arguments are as follows:
53 * The name of the ioctl. This is used for history logging. If the
54 * ioctl returns successfully (the callback returns 0), and allow_log
55 * is true, then a history log entry will be recorded with the input &
56 * output nvlists. The log entry can be printed with "zpool history -i".
59 * The ioctl request number, which userland will pass to ioctl(2).
60 * The ioctl numbers can change from release to release, because
61 * the caller (libzfs) must be matched to the kernel.
63 * zfs_secpolicy_func_t *secpolicy
64 * This function will be called before the zfs_ioc_func_t, to
65 * determine if this operation is permitted. It should return EPERM
66 * on failure, and 0 on success. Checks include determining if the
67 * dataset is visible in this zone, and if the user has either all
68 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission
69 * to do this operation on this dataset with "zfs allow".
71 * zfs_ioc_namecheck_t namecheck
72 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool
73 * name, a dataset name, or nothing. If the name is not well-formed,
74 * the ioctl will fail and the callback will not be called.
75 * Therefore, the callback can assume that the name is well-formed
76 * (e.g. is null-terminated, doesn't have more than one '@' character,
77 * doesn't have invalid characters).
79 * zfs_ioc_poolcheck_t pool_check
80 * This specifies requirements on the pool state. If the pool does
81 * not meet them (is suspended or is readonly), the ioctl will fail
82 * and the callback will not be called. If any checks are specified
83 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME.
84 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED |
85 * POOL_CHECK_READONLY).
87 * boolean_t smush_outnvlist
88 * If smush_outnvlist is true, then the output is presumed to be a
89 * list of errors, and it will be "smushed" down to fit into the
90 * caller's buffer, by removing some entries and replacing them with a
91 * single "N_MORE_ERRORS" entry indicating how many were removed. See
92 * nvlist_smush() for details. If smush_outnvlist is false, and the
93 * outnvlist does not fit into the userland-provided buffer, then the
94 * ioctl will fail with ENOMEM.
96 * zfs_ioc_func_t *func
97 * The callback function that will perform the operation.
99 * The callback should return 0 on success, or an error number on
100 * failure. If the function fails, the userland ioctl will return -1,
101 * and errno will be set to the callback's return value. The callback
102 * will be called with the following arguments:
105 * The name of the pool or dataset to operate on, from
106 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the
107 * expected type (pool, dataset, or none).
110 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or
111 * NULL if no input nvlist was provided. Changes to this nvlist are
112 * ignored. If the input nvlist could not be deserialized, the
113 * ioctl will fail and the callback will not be called.
116 * The output nvlist, initially empty. The callback can fill it in,
117 * and it will be returned to userland by serializing it into
118 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization
119 * fails (e.g. because the caller didn't supply a large enough
120 * buffer), then the overall ioctl will fail. See the
121 * 'smush_nvlist' argument above for additional behaviors.
123 * There are two typical uses of the output nvlist:
124 * - To return state, e.g. property values. In this case,
125 * smush_outnvlist should be false. If the buffer was not large
126 * enough, the caller will reallocate a larger buffer and try
129 * - To return multiple errors from an ioctl which makes on-disk
130 * changes. In this case, smush_outnvlist should be true.
131 * Ioctls which make on-disk modifications should generally not
132 * use the outnvl if they succeed, because the caller can not
133 * distinguish between the operation failing, and
134 * deserialization failing.
137 #include <sys/types.h>
138 #include <sys/param.h>
139 #include <sys/systm.h>
140 #include <sys/conf.h>
141 #include <sys/kernel.h>
142 #include <sys/lock.h>
143 #include <sys/malloc.h>
144 #include <sys/mutex.h>
145 #include <sys/proc.h>
146 #include <sys/errno.h>
149 #include <sys/file.h>
150 #include <sys/kmem.h>
151 #include <sys/conf.h>
152 #include <sys/cmn_err.h>
153 #include <sys/stat.h>
154 #include <sys/zfs_ioctl.h>
155 #include <sys/zfs_vfsops.h>
156 #include <sys/zfs_znode.h>
159 #include <sys/spa_impl.h>
160 #include <sys/vdev.h>
162 #include <sys/dsl_dir.h>
163 #include <sys/dsl_dataset.h>
164 #include <sys/dsl_prop.h>
165 #include <sys/dsl_deleg.h>
166 #include <sys/dmu_objset.h>
167 #include <sys/dmu_impl.h>
168 #include <sys/dmu_tx.h>
169 #include <sys/sunddi.h>
170 #include <sys/policy.h>
171 #include <sys/zone.h>
172 #include <sys/nvpair.h>
173 #include <sys/mount.h>
174 #include <sys/taskqueue.h>
176 #include <sys/varargs.h>
177 #include <sys/fs/zfs.h>
178 #include <sys/zfs_ctldir.h>
179 #include <sys/zfs_dir.h>
180 #include <sys/zfs_onexit.h>
181 #include <sys/zvol.h>
182 #include <sys/dsl_scan.h>
183 #include <sys/dmu_objset.h>
184 #include <sys/dmu_send.h>
185 #include <sys/dsl_destroy.h>
186 #include <sys/dsl_bookmark.h>
187 #include <sys/dsl_userhold.h>
188 #include <sys/zfeature.h>
190 #include "zfs_namecheck.h"
191 #include "zfs_prop.h"
192 #include "zfs_deleg.h"
193 #include "zfs_comutil.h"
194 #include "zfs_ioctl_compat.h"
196 CTASSERT(sizeof(zfs_cmd_t) < IOCPARM_MAX);
198 static int snapshot_list_prefetch;
199 SYSCTL_DECL(_vfs_zfs);
200 TUNABLE_INT("vfs.zfs.snapshot_list_prefetch", &snapshot_list_prefetch);
201 SYSCTL_INT(_vfs_zfs, OID_AUTO, snapshot_list_prefetch, CTLFLAG_RW,
202 &snapshot_list_prefetch, 0, "Prefetch data when listing snapshots");
204 static struct cdev *zfsdev;
206 extern void zfs_init(void);
207 extern void zfs_fini(void);
209 uint_t zfs_fsyncer_key;
210 extern uint_t rrw_tsd_key;
211 static uint_t zfs_allow_log_key;
213 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *);
214 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *);
215 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *);
221 } zfs_ioc_namecheck_t;
224 POOL_CHECK_NONE = 1 << 0,
225 POOL_CHECK_SUSPENDED = 1 << 1,
226 POOL_CHECK_READONLY = 1 << 2,
227 } zfs_ioc_poolcheck_t;
229 typedef struct zfs_ioc_vec {
230 zfs_ioc_legacy_func_t *zvec_legacy_func;
231 zfs_ioc_func_t *zvec_func;
232 zfs_secpolicy_func_t *zvec_secpolicy;
233 zfs_ioc_namecheck_t zvec_namecheck;
234 boolean_t zvec_allow_log;
235 zfs_ioc_poolcheck_t zvec_pool_check;
236 boolean_t zvec_smush_outnvlist;
237 const char *zvec_name;
240 /* This array is indexed by zfs_userquota_prop_t */
241 static const char *userquota_perms[] = {
242 ZFS_DELEG_PERM_USERUSED,
243 ZFS_DELEG_PERM_USERQUOTA,
244 ZFS_DELEG_PERM_GROUPUSED,
245 ZFS_DELEG_PERM_GROUPQUOTA,
248 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc);
249 static int zfs_check_settable(const char *name, nvpair_t *property,
251 static int zfs_check_clearable(char *dataset, nvlist_t *props,
253 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *,
255 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *);
256 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp);
258 static void zfsdev_close(void *data);
260 static int zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature);
262 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */
264 __dprintf(const char *file, const char *func, int line, const char *fmt, ...)
271 * Get rid of annoying "../common/" prefix to filename.
273 newfile = strrchr(file, '/');
274 if (newfile != NULL) {
275 newfile = newfile + 1; /* Get rid of leading / */
281 (void) vsnprintf(buf, sizeof (buf), fmt, adx);
285 * To get this data, use the zfs-dprintf probe as so:
286 * dtrace -q -n 'zfs-dprintf \
287 * /stringof(arg0) == "dbuf.c"/ \
288 * {printf("%s: %s", stringof(arg1), stringof(arg3))}'
290 * arg1 = function name
294 DTRACE_PROBE4(zfs__dprintf,
295 char *, newfile, char *, func, int, line, char *, buf);
299 history_str_free(char *buf)
301 kmem_free(buf, HIS_MAX_RECORD_LEN);
305 history_str_get(zfs_cmd_t *zc)
309 if (zc->zc_history == 0)
312 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP);
313 if (copyinstr((void *)(uintptr_t)zc->zc_history,
314 buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
315 history_str_free(buf);
319 buf[HIS_MAX_RECORD_LEN -1] = '\0';
325 * Check to see if the named dataset is currently defined as bootable
328 zfs_is_bootfs(const char *name)
332 if (dmu_objset_hold(name, FTAG, &os) == 0) {
334 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os)));
335 dmu_objset_rele(os, FTAG);
342 * Return non-zero if the spa version is less than requested version.
345 zfs_earlier_version(const char *name, int version)
349 if (spa_open(name, &spa, FTAG) == 0) {
350 if (spa_version(spa) < version) {
351 spa_close(spa, FTAG);
354 spa_close(spa, FTAG);
360 * Return TRUE if the ZPL version is less than requested version.
363 zpl_earlier_version(const char *name, int version)
366 boolean_t rc = B_TRUE;
368 if (dmu_objset_hold(name, FTAG, &os) == 0) {
371 if (dmu_objset_type(os) != DMU_OST_ZFS) {
372 dmu_objset_rele(os, FTAG);
375 /* XXX reading from non-owned objset */
376 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0)
377 rc = zplversion < version;
378 dmu_objset_rele(os, FTAG);
384 zfs_log_history(zfs_cmd_t *zc)
389 if ((buf = history_str_get(zc)) == NULL)
392 if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
393 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
394 (void) spa_history_log(spa, buf);
395 spa_close(spa, FTAG);
397 history_str_free(buf);
401 * Policy for top-level read operations (list pools). Requires no privileges,
402 * and can be used in the local zone, as there is no associated dataset.
406 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
412 * Policy for dataset read operations (list children, get statistics). Requires
413 * no privileges, but must be visible in the local zone.
417 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
419 if (INGLOBALZONE(curthread) ||
420 zone_dataset_visible(zc->zc_name, NULL))
423 return (SET_ERROR(ENOENT));
427 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr)
432 * The dataset must be visible by this zone -- check this first
433 * so they don't see EPERM on something they shouldn't know about.
435 if (!INGLOBALZONE(curthread) &&
436 !zone_dataset_visible(dataset, &writable))
437 return (SET_ERROR(ENOENT));
439 if (INGLOBALZONE(curthread)) {
441 * If the fs is zoned, only root can access it from the
444 if (secpolicy_zfs(cr) && zoned)
445 return (SET_ERROR(EPERM));
448 * If we are in a local zone, the 'zoned' property must be set.
451 return (SET_ERROR(EPERM));
453 /* must be writable by this zone */
455 return (SET_ERROR(EPERM));
461 zfs_dozonecheck(const char *dataset, cred_t *cr)
465 if (dsl_prop_get_integer(dataset, "jailed", &zoned, NULL))
466 return (SET_ERROR(ENOENT));
468 return (zfs_dozonecheck_impl(dataset, zoned, cr));
472 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr)
476 if (dsl_prop_get_int_ds(ds, "jailed", &zoned))
477 return (SET_ERROR(ENOENT));
479 return (zfs_dozonecheck_impl(dataset, zoned, cr));
483 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds,
484 const char *perm, cred_t *cr)
488 error = zfs_dozonecheck_ds(name, ds, cr);
490 error = secpolicy_zfs(cr);
492 error = dsl_deleg_access_impl(ds, perm, cr);
498 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
504 error = dsl_pool_hold(name, FTAG, &dp);
508 error = dsl_dataset_hold(dp, name, FTAG, &ds);
510 dsl_pool_rele(dp, FTAG);
514 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr);
516 dsl_dataset_rele(ds, FTAG);
517 dsl_pool_rele(dp, FTAG);
523 * Policy for setting the security label property.
525 * Returns 0 for success, non-zero for access and other errors.
528 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr)
530 char ds_hexsl[MAXNAMELEN];
531 bslabel_t ds_sl, new_sl;
532 boolean_t new_default = FALSE;
534 int needed_priv = -1;
537 /* First get the existing dataset label. */
538 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL),
539 1, sizeof (ds_hexsl), &ds_hexsl, NULL);
541 return (SET_ERROR(EPERM));
543 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
546 /* The label must be translatable */
547 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0))
548 return (SET_ERROR(EINVAL));
551 * In a non-global zone, disallow attempts to set a label that
552 * doesn't match that of the zone; otherwise no other checks
555 if (!INGLOBALZONE(curproc)) {
556 if (new_default || !blequal(&new_sl, CR_SL(CRED())))
557 return (SET_ERROR(EPERM));
562 * For global-zone datasets (i.e., those whose zoned property is
563 * "off", verify that the specified new label is valid for the
566 if (dsl_prop_get_integer(name,
567 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL))
568 return (SET_ERROR(EPERM));
570 if (zfs_check_global_label(name, strval) != 0)
571 return (SET_ERROR(EPERM));
575 * If the existing dataset label is nondefault, check if the
576 * dataset is mounted (label cannot be changed while mounted).
577 * Get the zfsvfs; if there isn't one, then the dataset isn't
578 * mounted (or isn't a dataset, doesn't exist, ...).
580 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) {
582 static char *setsl_tag = "setsl_tag";
585 * Try to own the dataset; abort if there is any error,
586 * (e.g., already mounted, in use, or other error).
588 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE,
591 return (SET_ERROR(EPERM));
593 dmu_objset_disown(os, setsl_tag);
596 needed_priv = PRIV_FILE_DOWNGRADE_SL;
600 if (hexstr_to_label(strval, &new_sl) != 0)
601 return (SET_ERROR(EPERM));
603 if (blstrictdom(&ds_sl, &new_sl))
604 needed_priv = PRIV_FILE_DOWNGRADE_SL;
605 else if (blstrictdom(&new_sl, &ds_sl))
606 needed_priv = PRIV_FILE_UPGRADE_SL;
608 /* dataset currently has a default label */
610 needed_priv = PRIV_FILE_UPGRADE_SL;
614 if (needed_priv != -1)
615 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL));
618 #endif /* SECLABEL */
621 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval,
627 * Check permissions for special properties.
632 * Disallow setting of 'zoned' from within a local zone.
634 if (!INGLOBALZONE(curthread))
635 return (SET_ERROR(EPERM));
639 case ZFS_PROP_FILESYSTEM_LIMIT:
640 case ZFS_PROP_SNAPSHOT_LIMIT:
641 if (!INGLOBALZONE(curthread)) {
643 char setpoint[MAXNAMELEN];
645 * Unprivileged users are allowed to modify the
646 * limit on things *under* (ie. contained by)
647 * the thing they own.
649 if (dsl_prop_get_integer(dsname, "jailed", &zoned,
651 return (SET_ERROR(EPERM));
652 if (!zoned || strlen(dsname) <= strlen(setpoint))
653 return (SET_ERROR(EPERM));
657 case ZFS_PROP_MLSLABEL:
659 if (!is_system_labeled())
660 return (SET_ERROR(EPERM));
662 if (nvpair_value_string(propval, &strval) == 0) {
665 err = zfs_set_slabel_policy(dsname, strval, CRED());
675 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr));
680 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
684 error = zfs_dozonecheck(zc->zc_name, cr);
689 * permission to set permissions will be evaluated later in
690 * dsl_deleg_can_allow()
697 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
699 return (zfs_secpolicy_write_perms(zc->zc_name,
700 ZFS_DELEG_PERM_ROLLBACK, cr));
705 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
713 * Generate the current snapshot name from the given objsetid, then
714 * use that name for the secpolicy/zone checks.
716 cp = strchr(zc->zc_name, '@');
718 return (SET_ERROR(EINVAL));
719 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
723 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
725 dsl_pool_rele(dp, FTAG);
729 dsl_dataset_name(ds, zc->zc_name);
731 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds,
732 ZFS_DELEG_PERM_SEND, cr);
733 dsl_dataset_rele(ds, FTAG);
734 dsl_pool_rele(dp, FTAG);
741 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
743 return (zfs_secpolicy_write_perms(zc->zc_name,
744 ZFS_DELEG_PERM_SEND, cr));
749 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
754 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
755 NO_FOLLOW, NULL, &vp)) != 0)
758 /* Now make sure mntpnt and dataset are ZFS */
760 if (strcmp(vp->v_vfsp->mnt_stat.f_fstypename, "zfs") != 0 ||
761 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
762 zc->zc_name) != 0)) {
764 return (SET_ERROR(EPERM));
768 return (dsl_deleg_access(zc->zc_name,
769 ZFS_DELEG_PERM_SHARE, cr));
773 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
775 if (!INGLOBALZONE(curthread))
776 return (SET_ERROR(EPERM));
778 if (secpolicy_nfs(cr) == 0) {
781 return (zfs_secpolicy_deleg_share(zc, innvl, cr));
786 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
788 if (!INGLOBALZONE(curthread))
789 return (SET_ERROR(EPERM));
791 if (secpolicy_smb(cr) == 0) {
794 return (zfs_secpolicy_deleg_share(zc, innvl, cr));
799 zfs_get_parent(const char *datasetname, char *parent, int parentsize)
804 * Remove the @bla or /bla from the end of the name to get the parent.
806 (void) strncpy(parent, datasetname, parentsize);
807 cp = strrchr(parent, '@');
811 cp = strrchr(parent, '/');
813 return (SET_ERROR(ENOENT));
821 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
825 if ((error = zfs_secpolicy_write_perms(name,
826 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
829 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
834 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
836 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
840 * Destroying snapshots with delegated permissions requires
841 * descendant mount and destroy permissions.
845 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
848 nvpair_t *pair, *nextpair;
851 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
852 return (SET_ERROR(EINVAL));
853 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
855 nextpair = nvlist_next_nvpair(snaps, pair);
856 error = zfs_secpolicy_destroy_perms(nvpair_name(pair), cr);
857 if (error == ENOENT) {
859 * Ignore any snapshots that don't exist (we consider
860 * them "already destroyed"). Remove the name from the
861 * nvl here in case the snapshot is created between
862 * now and when we try to destroy it (in which case
863 * we don't want to destroy it since we haven't
864 * checked for permission).
866 fnvlist_remove_nvpair(snaps, pair);
877 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
879 char parentname[MAXNAMELEN];
882 if ((error = zfs_secpolicy_write_perms(from,
883 ZFS_DELEG_PERM_RENAME, cr)) != 0)
886 if ((error = zfs_secpolicy_write_perms(from,
887 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
890 if ((error = zfs_get_parent(to, parentname,
891 sizeof (parentname))) != 0)
894 if ((error = zfs_secpolicy_write_perms(parentname,
895 ZFS_DELEG_PERM_CREATE, cr)) != 0)
898 if ((error = zfs_secpolicy_write_perms(parentname,
899 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
907 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
912 if ((zc->zc_cookie & 1) != 0) {
914 * This is recursive rename, so the starting snapshot might
915 * not exist. Check file system or volume permission instead.
917 at = strchr(zc->zc_name, '@');
923 error = zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr);
933 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
936 dsl_dataset_t *clone;
939 error = zfs_secpolicy_write_perms(zc->zc_name,
940 ZFS_DELEG_PERM_PROMOTE, cr);
944 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
948 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone);
951 char parentname[MAXNAMELEN];
952 dsl_dataset_t *origin = NULL;
956 error = dsl_dataset_hold_obj(dd->dd_pool,
957 dd->dd_phys->dd_origin_obj, FTAG, &origin);
959 dsl_dataset_rele(clone, FTAG);
960 dsl_pool_rele(dp, FTAG);
964 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone,
965 ZFS_DELEG_PERM_MOUNT, cr);
967 dsl_dataset_name(origin, parentname);
969 error = zfs_secpolicy_write_perms_ds(parentname, origin,
970 ZFS_DELEG_PERM_PROMOTE, cr);
972 dsl_dataset_rele(clone, FTAG);
973 dsl_dataset_rele(origin, FTAG);
975 dsl_pool_rele(dp, FTAG);
981 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
985 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
986 ZFS_DELEG_PERM_RECEIVE, cr)) != 0)
989 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
990 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
993 return (zfs_secpolicy_write_perms(zc->zc_name,
994 ZFS_DELEG_PERM_CREATE, cr));
998 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
1000 return (zfs_secpolicy_write_perms(name,
1001 ZFS_DELEG_PERM_SNAPSHOT, cr));
1005 * Check for permission to create each snapshot in the nvlist.
1009 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1015 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
1016 return (SET_ERROR(EINVAL));
1017 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
1018 pair = nvlist_next_nvpair(snaps, pair)) {
1019 char *name = nvpair_name(pair);
1020 char *atp = strchr(name, '@');
1023 error = SET_ERROR(EINVAL);
1027 error = zfs_secpolicy_snapshot_perms(name, cr);
1036 * Check for permission to create each snapshot in the nvlist.
1040 zfs_secpolicy_bookmark(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1044 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL);
1045 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) {
1046 char *name = nvpair_name(pair);
1047 char *hashp = strchr(name, '#');
1049 if (hashp == NULL) {
1050 error = SET_ERROR(EINVAL);
1054 error = zfs_secpolicy_write_perms(name,
1055 ZFS_DELEG_PERM_BOOKMARK, cr);
1065 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1067 nvpair_t *pair, *nextpair;
1070 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL;
1072 char *name = nvpair_name(pair);
1073 char *hashp = strchr(name, '#');
1074 nextpair = nvlist_next_nvpair(innvl, pair);
1076 if (hashp == NULL) {
1077 error = SET_ERROR(EINVAL);
1082 error = zfs_secpolicy_write_perms(name,
1083 ZFS_DELEG_PERM_DESTROY, cr);
1085 if (error == ENOENT) {
1087 * Ignore any filesystems that don't exist (we consider
1088 * their bookmarks "already destroyed"). Remove
1089 * the name from the nvl here in case the filesystem
1090 * is created between now and when we try to destroy
1091 * the bookmark (in which case we don't want to
1092 * destroy it since we haven't checked for permission).
1094 fnvlist_remove_nvpair(innvl, pair);
1106 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1109 * Even root must have a proper TSD so that we know what pool
1112 if (tsd_get(zfs_allow_log_key) == NULL)
1113 return (SET_ERROR(EPERM));
1118 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1120 char parentname[MAXNAMELEN];
1124 if ((error = zfs_get_parent(zc->zc_name, parentname,
1125 sizeof (parentname))) != 0)
1128 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 &&
1129 (error = zfs_secpolicy_write_perms(origin,
1130 ZFS_DELEG_PERM_CLONE, cr)) != 0)
1133 if ((error = zfs_secpolicy_write_perms(parentname,
1134 ZFS_DELEG_PERM_CREATE, cr)) != 0)
1137 return (zfs_secpolicy_write_perms(parentname,
1138 ZFS_DELEG_PERM_MOUNT, cr));
1142 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires
1143 * SYS_CONFIG privilege, which is not available in a local zone.
1147 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1149 if (secpolicy_sys_config(cr, B_FALSE) != 0)
1150 return (SET_ERROR(EPERM));
1156 * Policy for object to name lookups.
1160 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1164 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0)
1167 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr);
1172 * Policy for fault injection. Requires all privileges.
1176 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1178 return (secpolicy_zinject(cr));
1183 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1185 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
1187 if (prop == ZPROP_INVAL) {
1188 if (!zfs_prop_user(zc->zc_value))
1189 return (SET_ERROR(EINVAL));
1190 return (zfs_secpolicy_write_perms(zc->zc_name,
1191 ZFS_DELEG_PERM_USERPROP, cr));
1193 return (zfs_secpolicy_setprop(zc->zc_name, prop,
1199 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1201 int err = zfs_secpolicy_read(zc, innvl, cr);
1205 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
1206 return (SET_ERROR(EINVAL));
1208 if (zc->zc_value[0] == 0) {
1210 * They are asking about a posix uid/gid. If it's
1211 * themself, allow it.
1213 if (zc->zc_objset_type == ZFS_PROP_USERUSED ||
1214 zc->zc_objset_type == ZFS_PROP_USERQUOTA) {
1215 if (zc->zc_guid == crgetuid(cr))
1218 if (groupmember(zc->zc_guid, cr))
1223 return (zfs_secpolicy_write_perms(zc->zc_name,
1224 userquota_perms[zc->zc_objset_type], cr));
1228 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1230 int err = zfs_secpolicy_read(zc, innvl, cr);
1234 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
1235 return (SET_ERROR(EINVAL));
1237 return (zfs_secpolicy_write_perms(zc->zc_name,
1238 userquota_perms[zc->zc_objset_type], cr));
1243 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1245 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION,
1251 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1257 error = nvlist_lookup_nvlist(innvl, "holds", &holds);
1259 return (SET_ERROR(EINVAL));
1261 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
1262 pair = nvlist_next_nvpair(holds, pair)) {
1263 char fsname[MAXNAMELEN];
1264 error = dmu_fsname(nvpair_name(pair), fsname);
1267 error = zfs_secpolicy_write_perms(fsname,
1268 ZFS_DELEG_PERM_HOLD, cr);
1277 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1282 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL;
1283 pair = nvlist_next_nvpair(innvl, pair)) {
1284 char fsname[MAXNAMELEN];
1285 error = dmu_fsname(nvpair_name(pair), fsname);
1288 error = zfs_secpolicy_write_perms(fsname,
1289 ZFS_DELEG_PERM_RELEASE, cr);
1297 * Policy for allowing temporary snapshots to be taken or released
1300 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1303 * A temporary snapshot is the same as a snapshot,
1304 * hold, destroy and release all rolled into one.
1305 * Delegated diff alone is sufficient that we allow this.
1309 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
1310 ZFS_DELEG_PERM_DIFF, cr)) == 0)
1313 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr);
1315 error = zfs_secpolicy_hold(zc, innvl, cr);
1317 error = zfs_secpolicy_release(zc, innvl, cr);
1319 error = zfs_secpolicy_destroy(zc, innvl, cr);
1324 * Returns the nvlist as specified by the user in the zfs_cmd_t.
1327 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp)
1331 nvlist_t *list = NULL;
1334 * Read in and unpack the user-supplied nvlist.
1337 return (SET_ERROR(EINVAL));
1339 packed = kmem_alloc(size, KM_SLEEP);
1341 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
1343 kmem_free(packed, size);
1347 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) {
1348 kmem_free(packed, size);
1352 kmem_free(packed, size);
1359 * Reduce the size of this nvlist until it can be serialized in 'max' bytes.
1360 * Entries will be removed from the end of the nvlist, and one int32 entry
1361 * named "N_MORE_ERRORS" will be added indicating how many entries were
1365 nvlist_smush(nvlist_t *errors, size_t max)
1369 size = fnvlist_size(errors);
1372 nvpair_t *more_errors;
1376 return (SET_ERROR(ENOMEM));
1378 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0);
1379 more_errors = nvlist_prev_nvpair(errors, NULL);
1382 nvpair_t *pair = nvlist_prev_nvpair(errors,
1384 fnvlist_remove_nvpair(errors, pair);
1386 size = fnvlist_size(errors);
1387 } while (size > max);
1389 fnvlist_remove_nvpair(errors, more_errors);
1390 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n);
1391 ASSERT3U(fnvlist_size(errors), <=, max);
1398 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
1400 char *packed = NULL;
1404 size = fnvlist_size(nvl);
1406 if (size > zc->zc_nvlist_dst_size) {
1408 * Solaris returns ENOMEM here, because even if an error is
1409 * returned from an ioctl(2), new zc_nvlist_dst_size will be
1410 * passed to the userland. This is not the case for FreeBSD.
1411 * We need to return 0, so the kernel will copy the
1412 * zc_nvlist_dst_size back and the userland can discover that a
1413 * bigger buffer is needed.
1417 packed = fnvlist_pack(nvl, &size);
1418 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
1419 size, zc->zc_iflags) != 0)
1420 error = SET_ERROR(EFAULT);
1421 fnvlist_pack_free(packed, size);
1424 zc->zc_nvlist_dst_size = size;
1425 zc->zc_nvlist_dst_filled = B_TRUE;
1430 getzfsvfs(const char *dsname, zfsvfs_t **zfvp)
1435 error = dmu_objset_hold(dsname, FTAG, &os);
1438 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1439 dmu_objset_rele(os, FTAG);
1440 return (SET_ERROR(EINVAL));
1443 mutex_enter(&os->os_user_ptr_lock);
1444 *zfvp = dmu_objset_get_user(os);
1446 VFS_HOLD((*zfvp)->z_vfs);
1448 error = SET_ERROR(ESRCH);
1450 mutex_exit(&os->os_user_ptr_lock);
1451 dmu_objset_rele(os, FTAG);
1456 * Find a zfsvfs_t for a mounted filesystem, or create our own, in which
1457 * case its z_vfs will be NULL, and it will be opened as the owner.
1458 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER,
1459 * which prevents all vnode ops from running.
1462 zfsvfs_hold(const char *name, void *tag, zfsvfs_t **zfvp, boolean_t writer)
1466 if (getzfsvfs(name, zfvp) != 0)
1467 error = zfsvfs_create(name, zfvp);
1469 rrm_enter(&(*zfvp)->z_teardown_lock, (writer) ? RW_WRITER :
1471 if ((*zfvp)->z_unmounted) {
1473 * XXX we could probably try again, since the unmounting
1474 * thread should be just about to disassociate the
1475 * objset from the zfsvfs.
1477 rrm_exit(&(*zfvp)->z_teardown_lock, tag);
1478 return (SET_ERROR(EBUSY));
1485 zfsvfs_rele(zfsvfs_t *zfsvfs, void *tag)
1487 rrm_exit(&zfsvfs->z_teardown_lock, tag);
1489 if (zfsvfs->z_vfs) {
1490 VFS_RELE(zfsvfs->z_vfs);
1492 dmu_objset_disown(zfsvfs->z_os, zfsvfs);
1493 zfsvfs_free(zfsvfs);
1498 zfs_ioc_pool_create(zfs_cmd_t *zc)
1501 nvlist_t *config, *props = NULL;
1502 nvlist_t *rootprops = NULL;
1503 nvlist_t *zplprops = NULL;
1505 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1506 zc->zc_iflags, &config))
1509 if (zc->zc_nvlist_src_size != 0 && (error =
1510 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1511 zc->zc_iflags, &props))) {
1512 nvlist_free(config);
1517 nvlist_t *nvl = NULL;
1518 uint64_t version = SPA_VERSION;
1520 (void) nvlist_lookup_uint64(props,
1521 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version);
1522 if (!SPA_VERSION_IS_SUPPORTED(version)) {
1523 error = SET_ERROR(EINVAL);
1524 goto pool_props_bad;
1526 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl);
1528 error = nvlist_dup(nvl, &rootprops, KM_SLEEP);
1530 nvlist_free(config);
1534 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS);
1536 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1537 error = zfs_fill_zplprops_root(version, rootprops,
1540 goto pool_props_bad;
1543 error = spa_create(zc->zc_name, config, props, zplprops);
1546 * Set the remaining root properties
1548 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name,
1549 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0)
1550 (void) spa_destroy(zc->zc_name);
1553 nvlist_free(rootprops);
1554 nvlist_free(zplprops);
1555 nvlist_free(config);
1562 zfs_ioc_pool_destroy(zfs_cmd_t *zc)
1565 zfs_log_history(zc);
1566 error = spa_destroy(zc->zc_name);
1568 zvol_remove_minors(zc->zc_name);
1573 zfs_ioc_pool_import(zfs_cmd_t *zc)
1575 nvlist_t *config, *props = NULL;
1579 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1580 zc->zc_iflags, &config)) != 0)
1583 if (zc->zc_nvlist_src_size != 0 && (error =
1584 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1585 zc->zc_iflags, &props))) {
1586 nvlist_free(config);
1590 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
1591 guid != zc->zc_guid)
1592 error = SET_ERROR(EINVAL);
1594 error = spa_import(zc->zc_name, config, props, zc->zc_cookie);
1596 if (zc->zc_nvlist_dst != 0) {
1599 if ((err = put_nvlist(zc, config)) != 0)
1603 nvlist_free(config);
1612 zfs_ioc_pool_export(zfs_cmd_t *zc)
1615 boolean_t force = (boolean_t)zc->zc_cookie;
1616 boolean_t hardforce = (boolean_t)zc->zc_guid;
1618 zfs_log_history(zc);
1619 error = spa_export(zc->zc_name, NULL, force, hardforce);
1621 zvol_remove_minors(zc->zc_name);
1626 zfs_ioc_pool_configs(zfs_cmd_t *zc)
1631 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
1632 return (SET_ERROR(EEXIST));
1634 error = put_nvlist(zc, configs);
1636 nvlist_free(configs);
1643 * zc_name name of the pool
1646 * zc_cookie real errno
1647 * zc_nvlist_dst config nvlist
1648 * zc_nvlist_dst_size size of config nvlist
1651 zfs_ioc_pool_stats(zfs_cmd_t *zc)
1657 error = spa_get_stats(zc->zc_name, &config, zc->zc_value,
1658 sizeof (zc->zc_value));
1660 if (config != NULL) {
1661 ret = put_nvlist(zc, config);
1662 nvlist_free(config);
1665 * The config may be present even if 'error' is non-zero.
1666 * In this case we return success, and preserve the real errno
1669 zc->zc_cookie = error;
1678 * Try to import the given pool, returning pool stats as appropriate so that
1679 * user land knows which devices are available and overall pool health.
1682 zfs_ioc_pool_tryimport(zfs_cmd_t *zc)
1684 nvlist_t *tryconfig, *config;
1687 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1688 zc->zc_iflags, &tryconfig)) != 0)
1691 config = spa_tryimport(tryconfig);
1693 nvlist_free(tryconfig);
1696 return (SET_ERROR(EINVAL));
1698 error = put_nvlist(zc, config);
1699 nvlist_free(config);
1706 * zc_name name of the pool
1707 * zc_cookie scan func (pool_scan_func_t)
1710 zfs_ioc_pool_scan(zfs_cmd_t *zc)
1715 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1718 if (zc->zc_cookie == POOL_SCAN_NONE)
1719 error = spa_scan_stop(spa);
1721 error = spa_scan(spa, zc->zc_cookie);
1723 spa_close(spa, FTAG);
1729 zfs_ioc_pool_freeze(zfs_cmd_t *zc)
1734 error = spa_open(zc->zc_name, &spa, FTAG);
1737 spa_close(spa, FTAG);
1743 zfs_ioc_pool_upgrade(zfs_cmd_t *zc)
1748 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1751 if (zc->zc_cookie < spa_version(spa) ||
1752 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) {
1753 spa_close(spa, FTAG);
1754 return (SET_ERROR(EINVAL));
1757 spa_upgrade(spa, zc->zc_cookie);
1758 spa_close(spa, FTAG);
1764 zfs_ioc_pool_get_history(zfs_cmd_t *zc)
1771 if ((size = zc->zc_history_len) == 0)
1772 return (SET_ERROR(EINVAL));
1774 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1777 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
1778 spa_close(spa, FTAG);
1779 return (SET_ERROR(ENOTSUP));
1782 hist_buf = kmem_alloc(size, KM_SLEEP);
1783 if ((error = spa_history_get(spa, &zc->zc_history_offset,
1784 &zc->zc_history_len, hist_buf)) == 0) {
1785 error = ddi_copyout(hist_buf,
1786 (void *)(uintptr_t)zc->zc_history,
1787 zc->zc_history_len, zc->zc_iflags);
1790 spa_close(spa, FTAG);
1791 kmem_free(hist_buf, size);
1796 zfs_ioc_pool_reguid(zfs_cmd_t *zc)
1801 error = spa_open(zc->zc_name, &spa, FTAG);
1803 error = spa_change_guid(spa);
1804 spa_close(spa, FTAG);
1810 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
1812 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value));
1817 * zc_name name of filesystem
1818 * zc_obj object to find
1821 * zc_value name of object
1824 zfs_ioc_obj_to_path(zfs_cmd_t *zc)
1829 /* XXX reading from objset not owned */
1830 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1832 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1833 dmu_objset_rele(os, FTAG);
1834 return (SET_ERROR(EINVAL));
1836 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value,
1837 sizeof (zc->zc_value));
1838 dmu_objset_rele(os, FTAG);
1845 * zc_name name of filesystem
1846 * zc_obj object to find
1849 * zc_stat stats on object
1850 * zc_value path to object
1853 zfs_ioc_obj_to_stats(zfs_cmd_t *zc)
1858 /* XXX reading from objset not owned */
1859 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1861 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1862 dmu_objset_rele(os, FTAG);
1863 return (SET_ERROR(EINVAL));
1865 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value,
1866 sizeof (zc->zc_value));
1867 dmu_objset_rele(os, FTAG);
1873 zfs_ioc_vdev_add(zfs_cmd_t *zc)
1877 nvlist_t *config, **l2cache, **spares;
1878 uint_t nl2cache = 0, nspares = 0;
1880 error = spa_open(zc->zc_name, &spa, FTAG);
1884 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1885 zc->zc_iflags, &config);
1886 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
1887 &l2cache, &nl2cache);
1889 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
1894 * A root pool with concatenated devices is not supported.
1895 * Thus, can not add a device to a root pool.
1897 * Intent log device can not be added to a rootpool because
1898 * during mountroot, zil is replayed, a seperated log device
1899 * can not be accessed during the mountroot time.
1901 * l2cache and spare devices are ok to be added to a rootpool.
1903 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) {
1904 nvlist_free(config);
1905 spa_close(spa, FTAG);
1906 return (SET_ERROR(EDOM));
1908 #endif /* illumos */
1911 error = spa_vdev_add(spa, config);
1912 nvlist_free(config);
1914 spa_close(spa, FTAG);
1920 * zc_name name of the pool
1921 * zc_nvlist_conf nvlist of devices to remove
1922 * zc_cookie to stop the remove?
1925 zfs_ioc_vdev_remove(zfs_cmd_t *zc)
1930 error = spa_open(zc->zc_name, &spa, FTAG);
1933 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE);
1934 spa_close(spa, FTAG);
1939 zfs_ioc_vdev_set_state(zfs_cmd_t *zc)
1943 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
1945 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1947 switch (zc->zc_cookie) {
1948 case VDEV_STATE_ONLINE:
1949 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate);
1952 case VDEV_STATE_OFFLINE:
1953 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj);
1956 case VDEV_STATE_FAULTED:
1957 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1958 zc->zc_obj != VDEV_AUX_EXTERNAL)
1959 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1961 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj);
1964 case VDEV_STATE_DEGRADED:
1965 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1966 zc->zc_obj != VDEV_AUX_EXTERNAL)
1967 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1969 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj);
1973 error = SET_ERROR(EINVAL);
1975 zc->zc_cookie = newstate;
1976 spa_close(spa, FTAG);
1981 zfs_ioc_vdev_attach(zfs_cmd_t *zc)
1984 int replacing = zc->zc_cookie;
1988 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1991 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1992 zc->zc_iflags, &config)) == 0) {
1993 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
1994 nvlist_free(config);
1997 spa_close(spa, FTAG);
2002 zfs_ioc_vdev_detach(zfs_cmd_t *zc)
2007 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
2010 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE);
2012 spa_close(spa, FTAG);
2017 zfs_ioc_vdev_split(zfs_cmd_t *zc)
2020 nvlist_t *config, *props = NULL;
2022 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT);
2024 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
2027 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
2028 zc->zc_iflags, &config)) {
2029 spa_close(spa, FTAG);
2033 if (zc->zc_nvlist_src_size != 0 && (error =
2034 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2035 zc->zc_iflags, &props))) {
2036 spa_close(spa, FTAG);
2037 nvlist_free(config);
2041 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp);
2043 spa_close(spa, FTAG);
2045 nvlist_free(config);
2052 zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
2055 char *path = zc->zc_value;
2056 uint64_t guid = zc->zc_guid;
2059 error = spa_open(zc->zc_name, &spa, FTAG);
2063 error = spa_vdev_setpath(spa, guid, path);
2064 spa_close(spa, FTAG);
2069 zfs_ioc_vdev_setfru(zfs_cmd_t *zc)
2072 char *fru = zc->zc_value;
2073 uint64_t guid = zc->zc_guid;
2076 error = spa_open(zc->zc_name, &spa, FTAG);
2080 error = spa_vdev_setfru(spa, guid, fru);
2081 spa_close(spa, FTAG);
2086 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os)
2091 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
2093 if (zc->zc_nvlist_dst != 0 &&
2094 (error = dsl_prop_get_all(os, &nv)) == 0) {
2095 dmu_objset_stats(os, nv);
2097 * NB: zvol_get_stats() will read the objset contents,
2098 * which we aren't supposed to do with a
2099 * DS_MODE_USER hold, because it could be
2100 * inconsistent. So this is a bit of a workaround...
2101 * XXX reading with out owning
2103 if (!zc->zc_objset_stats.dds_inconsistent &&
2104 dmu_objset_type(os) == DMU_OST_ZVOL) {
2105 error = zvol_get_stats(os, nv);
2110 error = put_nvlist(zc, nv);
2119 * zc_name name of filesystem
2120 * zc_nvlist_dst_size size of buffer for property nvlist
2123 * zc_objset_stats stats
2124 * zc_nvlist_dst property nvlist
2125 * zc_nvlist_dst_size size of property nvlist
2128 zfs_ioc_objset_stats(zfs_cmd_t *zc)
2133 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
2135 error = zfs_ioc_objset_stats_impl(zc, os);
2136 dmu_objset_rele(os, FTAG);
2139 if (error == ENOMEM)
2146 * zc_name name of filesystem
2147 * zc_nvlist_dst_size size of buffer for property nvlist
2150 * zc_nvlist_dst received property nvlist
2151 * zc_nvlist_dst_size size of received property nvlist
2153 * Gets received properties (distinct from local properties on or after
2154 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from
2155 * local property values.
2158 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc)
2164 * Without this check, we would return local property values if the
2165 * caller has not already received properties on or after
2166 * SPA_VERSION_RECVD_PROPS.
2168 if (!dsl_prop_get_hasrecvd(zc->zc_name))
2169 return (SET_ERROR(ENOTSUP));
2171 if (zc->zc_nvlist_dst != 0 &&
2172 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) {
2173 error = put_nvlist(zc, nv);
2181 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop)
2187 * zfs_get_zplprop() will either find a value or give us
2188 * the default value (if there is one).
2190 if ((error = zfs_get_zplprop(os, prop, &value)) != 0)
2192 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0);
2198 * zc_name name of filesystem
2199 * zc_nvlist_dst_size size of buffer for zpl property nvlist
2202 * zc_nvlist_dst zpl property nvlist
2203 * zc_nvlist_dst_size size of zpl property nvlist
2206 zfs_ioc_objset_zplprops(zfs_cmd_t *zc)
2211 /* XXX reading without owning */
2212 if (err = dmu_objset_hold(zc->zc_name, FTAG, &os))
2215 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
2218 * NB: nvl_add_zplprop() will read the objset contents,
2219 * which we aren't supposed to do with a DS_MODE_USER
2220 * hold, because it could be inconsistent.
2222 if (zc->zc_nvlist_dst != 0 &&
2223 !zc->zc_objset_stats.dds_inconsistent &&
2224 dmu_objset_type(os) == DMU_OST_ZFS) {
2227 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2228 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 &&
2229 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 &&
2230 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 &&
2231 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0)
2232 err = put_nvlist(zc, nv);
2235 err = SET_ERROR(ENOENT);
2237 dmu_objset_rele(os, FTAG);
2242 dataset_name_hidden(const char *name)
2245 * Skip over datasets that are not visible in this zone,
2246 * internal datasets (which have a $ in their name), and
2247 * temporary datasets (which have a % in their name).
2249 if (strchr(name, '$') != NULL)
2251 if (strchr(name, '%') != NULL)
2253 if (!INGLOBALZONE(curthread) && !zone_dataset_visible(name, NULL))
2260 * zc_name name of filesystem
2261 * zc_cookie zap cursor
2262 * zc_nvlist_dst_size size of buffer for property nvlist
2265 * zc_name name of next filesystem
2266 * zc_cookie zap cursor
2267 * zc_objset_stats stats
2268 * zc_nvlist_dst property nvlist
2269 * zc_nvlist_dst_size size of property nvlist
2272 zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
2277 size_t orig_len = strlen(zc->zc_name);
2280 if (error = dmu_objset_hold(zc->zc_name, FTAG, &os)) {
2281 if (error == ENOENT)
2282 error = SET_ERROR(ESRCH);
2286 p = strrchr(zc->zc_name, '/');
2287 if (p == NULL || p[1] != '\0')
2288 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
2289 p = zc->zc_name + strlen(zc->zc_name);
2292 error = dmu_dir_list_next(os,
2293 sizeof (zc->zc_name) - (p - zc->zc_name), p,
2294 NULL, &zc->zc_cookie);
2295 if (error == ENOENT)
2296 error = SET_ERROR(ESRCH);
2297 } while (error == 0 && dataset_name_hidden(zc->zc_name));
2298 dmu_objset_rele(os, FTAG);
2301 * If it's an internal dataset (ie. with a '$' in its name),
2302 * don't try to get stats for it, otherwise we'll return ENOENT.
2304 if (error == 0 && strchr(zc->zc_name, '$') == NULL) {
2305 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
2306 if (error == ENOENT) {
2307 /* We lost a race with destroy, get the next one. */
2308 zc->zc_name[orig_len] = '\0';
2317 * zc_name name of filesystem
2318 * zc_cookie zap cursor
2319 * zc_nvlist_dst_size size of buffer for property nvlist
2320 * zc_simple when set, only name is requested
2323 * zc_name name of next snapshot
2324 * zc_objset_stats stats
2325 * zc_nvlist_dst property nvlist
2326 * zc_nvlist_dst_size size of property nvlist
2329 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc)
2334 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
2336 return (error == ENOENT ? ESRCH : error);
2340 * A dataset name of maximum length cannot have any snapshots,
2341 * so exit immediately.
2343 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) {
2344 dmu_objset_rele(os, FTAG);
2345 return (SET_ERROR(ESRCH));
2348 error = dmu_snapshot_list_next(os,
2349 sizeof (zc->zc_name) - strlen(zc->zc_name),
2350 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie,
2353 if (error == 0 && !zc->zc_simple) {
2355 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool;
2357 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds);
2361 error = dmu_objset_from_ds(ds, &ossnap);
2363 error = zfs_ioc_objset_stats_impl(zc, ossnap);
2364 dsl_dataset_rele(ds, FTAG);
2366 } else if (error == ENOENT) {
2367 error = SET_ERROR(ESRCH);
2370 dmu_objset_rele(os, FTAG);
2371 /* if we failed, undo the @ that we tacked on to zc_name */
2373 *strchr(zc->zc_name, '@') = '\0';
2378 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair)
2380 const char *propname = nvpair_name(pair);
2382 unsigned int vallen;
2385 zfs_userquota_prop_t type;
2391 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2393 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2394 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2396 return (SET_ERROR(EINVAL));
2400 * A correctly constructed propname is encoded as
2401 * userquota@<rid>-<domain>.
2403 if ((dash = strchr(propname, '-')) == NULL ||
2404 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 ||
2406 return (SET_ERROR(EINVAL));
2413 err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_FALSE);
2415 err = zfs_set_userquota(zfsvfs, type, domain, rid, quota);
2416 zfsvfs_rele(zfsvfs, FTAG);
2423 * If the named property is one that has a special function to set its value,
2424 * return 0 on success and a positive error code on failure; otherwise if it is
2425 * not one of the special properties handled by this function, return -1.
2427 * XXX: It would be better for callers of the property interface if we handled
2428 * these special cases in dsl_prop.c (in the dsl layer).
2431 zfs_prop_set_special(const char *dsname, zprop_source_t source,
2434 const char *propname = nvpair_name(pair);
2435 zfs_prop_t prop = zfs_name_to_prop(propname);
2439 if (prop == ZPROP_INVAL) {
2440 if (zfs_prop_userquota(propname))
2441 return (zfs_prop_set_userquota(dsname, pair));
2445 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2447 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2448 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2452 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING)
2455 VERIFY(0 == nvpair_value_uint64(pair, &intval));
2458 case ZFS_PROP_QUOTA:
2459 err = dsl_dir_set_quota(dsname, source, intval);
2461 case ZFS_PROP_REFQUOTA:
2462 err = dsl_dataset_set_refquota(dsname, source, intval);
2464 case ZFS_PROP_FILESYSTEM_LIMIT:
2465 case ZFS_PROP_SNAPSHOT_LIMIT:
2466 if (intval == UINT64_MAX) {
2467 /* clearing the limit, just do it */
2470 err = dsl_dir_activate_fs_ss_limit(dsname);
2473 * Set err to -1 to force the zfs_set_prop_nvlist code down the
2474 * default path to set the value in the nvlist.
2479 case ZFS_PROP_RESERVATION:
2480 err = dsl_dir_set_reservation(dsname, source, intval);
2482 case ZFS_PROP_REFRESERVATION:
2483 err = dsl_dataset_set_refreservation(dsname, source, intval);
2485 case ZFS_PROP_VOLSIZE:
2486 err = zvol_set_volsize(dsname, ddi_driver_major(zfs_dip),
2489 case ZFS_PROP_VERSION:
2493 if ((err = zfsvfs_hold(dsname, FTAG, &zfsvfs, B_TRUE)) != 0)
2496 err = zfs_set_version(zfsvfs, intval);
2497 zfsvfs_rele(zfsvfs, FTAG);
2499 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) {
2502 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
2503 (void) strcpy(zc->zc_name, dsname);
2504 (void) zfs_ioc_userspace_upgrade(zc);
2505 kmem_free(zc, sizeof (zfs_cmd_t));
2517 * This function is best effort. If it fails to set any of the given properties,
2518 * it continues to set as many as it can and returns the last error
2519 * encountered. If the caller provides a non-NULL errlist, it will be filled in
2520 * with the list of names of all the properties that failed along with the
2521 * corresponding error numbers.
2523 * If every property is set successfully, zero is returned and errlist is not
2527 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl,
2535 nvlist_t *genericnvl = fnvlist_alloc();
2536 nvlist_t *retrynvl = fnvlist_alloc();
2540 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2541 const char *propname = nvpair_name(pair);
2542 zfs_prop_t prop = zfs_name_to_prop(propname);
2545 /* decode the property value */
2547 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2549 attrs = fnvpair_value_nvlist(pair);
2550 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2552 err = SET_ERROR(EINVAL);
2555 /* Validate value type */
2556 if (err == 0 && prop == ZPROP_INVAL) {
2557 if (zfs_prop_user(propname)) {
2558 if (nvpair_type(propval) != DATA_TYPE_STRING)
2559 err = SET_ERROR(EINVAL);
2560 } else if (zfs_prop_userquota(propname)) {
2561 if (nvpair_type(propval) !=
2562 DATA_TYPE_UINT64_ARRAY)
2563 err = SET_ERROR(EINVAL);
2565 err = SET_ERROR(EINVAL);
2567 } else if (err == 0) {
2568 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2569 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING)
2570 err = SET_ERROR(EINVAL);
2571 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) {
2574 intval = fnvpair_value_uint64(propval);
2576 switch (zfs_prop_get_type(prop)) {
2577 case PROP_TYPE_NUMBER:
2579 case PROP_TYPE_STRING:
2580 err = SET_ERROR(EINVAL);
2582 case PROP_TYPE_INDEX:
2583 if (zfs_prop_index_to_string(prop,
2584 intval, &unused) != 0)
2585 err = SET_ERROR(EINVAL);
2589 "unknown property type");
2592 err = SET_ERROR(EINVAL);
2596 /* Validate permissions */
2598 err = zfs_check_settable(dsname, pair, CRED());
2601 err = zfs_prop_set_special(dsname, source, pair);
2604 * For better performance we build up a list of
2605 * properties to set in a single transaction.
2607 err = nvlist_add_nvpair(genericnvl, pair);
2608 } else if (err != 0 && nvl != retrynvl) {
2610 * This may be a spurious error caused by
2611 * receiving quota and reservation out of order.
2612 * Try again in a second pass.
2614 err = nvlist_add_nvpair(retrynvl, pair);
2619 if (errlist != NULL)
2620 fnvlist_add_int32(errlist, propname, err);
2625 if (nvl != retrynvl && !nvlist_empty(retrynvl)) {
2630 if (!nvlist_empty(genericnvl) &&
2631 dsl_props_set(dsname, source, genericnvl) != 0) {
2633 * If this fails, we still want to set as many properties as we
2634 * can, so try setting them individually.
2637 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) {
2638 const char *propname = nvpair_name(pair);
2642 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2644 attrs = fnvpair_value_nvlist(pair);
2645 propval = fnvlist_lookup_nvpair(attrs,
2649 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2650 strval = fnvpair_value_string(propval);
2651 err = dsl_prop_set_string(dsname, propname,
2654 intval = fnvpair_value_uint64(propval);
2655 err = dsl_prop_set_int(dsname, propname, source,
2660 if (errlist != NULL) {
2661 fnvlist_add_int32(errlist, propname,
2668 nvlist_free(genericnvl);
2669 nvlist_free(retrynvl);
2675 * Check that all the properties are valid user properties.
2678 zfs_check_userprops(const char *fsname, nvlist_t *nvl)
2680 nvpair_t *pair = NULL;
2683 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2684 const char *propname = nvpair_name(pair);
2686 if (!zfs_prop_user(propname) ||
2687 nvpair_type(pair) != DATA_TYPE_STRING)
2688 return (SET_ERROR(EINVAL));
2690 if (error = zfs_secpolicy_write_perms(fsname,
2691 ZFS_DELEG_PERM_USERPROP, CRED()))
2694 if (strlen(propname) >= ZAP_MAXNAMELEN)
2695 return (SET_ERROR(ENAMETOOLONG));
2697 if (strlen(fnvpair_value_string(pair)) >= ZAP_MAXVALUELEN)
2704 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops)
2708 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2711 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) {
2712 if (nvlist_exists(skipped, nvpair_name(pair)))
2715 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0);
2720 clear_received_props(const char *dsname, nvlist_t *props,
2724 nvlist_t *cleared_props = NULL;
2725 props_skip(props, skipped, &cleared_props);
2726 if (!nvlist_empty(cleared_props)) {
2728 * Acts on local properties until the dataset has received
2729 * properties at least once on or after SPA_VERSION_RECVD_PROPS.
2731 zprop_source_t flags = (ZPROP_SRC_NONE |
2732 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0));
2733 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL);
2735 nvlist_free(cleared_props);
2741 * zc_name name of filesystem
2742 * zc_value name of property to set
2743 * zc_nvlist_src{_size} nvlist of properties to apply
2744 * zc_cookie received properties flag
2747 * zc_nvlist_dst{_size} error for each unapplied received property
2750 zfs_ioc_set_prop(zfs_cmd_t *zc)
2753 boolean_t received = zc->zc_cookie;
2754 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED :
2759 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2760 zc->zc_iflags, &nvl)) != 0)
2764 nvlist_t *origprops;
2766 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) {
2767 (void) clear_received_props(zc->zc_name,
2769 nvlist_free(origprops);
2772 error = dsl_prop_set_hasrecvd(zc->zc_name);
2775 errors = fnvlist_alloc();
2777 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors);
2779 if (zc->zc_nvlist_dst != 0 && errors != NULL) {
2780 (void) put_nvlist(zc, errors);
2783 nvlist_free(errors);
2790 * zc_name name of filesystem
2791 * zc_value name of property to inherit
2792 * zc_cookie revert to received value if TRUE
2797 zfs_ioc_inherit_prop(zfs_cmd_t *zc)
2799 const char *propname = zc->zc_value;
2800 zfs_prop_t prop = zfs_name_to_prop(propname);
2801 boolean_t received = zc->zc_cookie;
2802 zprop_source_t source = (received
2803 ? ZPROP_SRC_NONE /* revert to received value, if any */
2804 : ZPROP_SRC_INHERITED); /* explicitly inherit */
2813 * zfs_prop_set_special() expects properties in the form of an
2814 * nvpair with type info.
2816 if (prop == ZPROP_INVAL) {
2817 if (!zfs_prop_user(propname))
2818 return (SET_ERROR(EINVAL));
2820 type = PROP_TYPE_STRING;
2821 } else if (prop == ZFS_PROP_VOLSIZE ||
2822 prop == ZFS_PROP_VERSION) {
2823 return (SET_ERROR(EINVAL));
2825 type = zfs_prop_get_type(prop);
2828 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2831 case PROP_TYPE_STRING:
2832 VERIFY(0 == nvlist_add_string(dummy, propname, ""));
2834 case PROP_TYPE_NUMBER:
2835 case PROP_TYPE_INDEX:
2836 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0));
2840 return (SET_ERROR(EINVAL));
2843 pair = nvlist_next_nvpair(dummy, NULL);
2844 err = zfs_prop_set_special(zc->zc_name, source, pair);
2847 return (err); /* special property already handled */
2850 * Only check this in the non-received case. We want to allow
2851 * 'inherit -S' to revert non-inheritable properties like quota
2852 * and reservation to the received or default values even though
2853 * they are not considered inheritable.
2855 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop))
2856 return (SET_ERROR(EINVAL));
2859 /* property name has been validated by zfs_secpolicy_inherit_prop() */
2860 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source));
2864 zfs_ioc_pool_set_props(zfs_cmd_t *zc)
2871 if (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2872 zc->zc_iflags, &props))
2876 * If the only property is the configfile, then just do a spa_lookup()
2877 * to handle the faulted case.
2879 pair = nvlist_next_nvpair(props, NULL);
2880 if (pair != NULL && strcmp(nvpair_name(pair),
2881 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 &&
2882 nvlist_next_nvpair(props, pair) == NULL) {
2883 mutex_enter(&spa_namespace_lock);
2884 if ((spa = spa_lookup(zc->zc_name)) != NULL) {
2885 spa_configfile_set(spa, props, B_FALSE);
2886 spa_config_sync(spa, B_FALSE, B_TRUE);
2888 mutex_exit(&spa_namespace_lock);
2895 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2900 error = spa_prop_set(spa, props);
2903 spa_close(spa, FTAG);
2909 zfs_ioc_pool_get_props(zfs_cmd_t *zc)
2913 nvlist_t *nvp = NULL;
2915 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2917 * If the pool is faulted, there may be properties we can still
2918 * get (such as altroot and cachefile), so attempt to get them
2921 mutex_enter(&spa_namespace_lock);
2922 if ((spa = spa_lookup(zc->zc_name)) != NULL)
2923 error = spa_prop_get(spa, &nvp);
2924 mutex_exit(&spa_namespace_lock);
2926 error = spa_prop_get(spa, &nvp);
2927 spa_close(spa, FTAG);
2930 if (error == 0 && zc->zc_nvlist_dst != 0)
2931 error = put_nvlist(zc, nvp);
2933 error = SET_ERROR(EFAULT);
2941 * zc_name name of filesystem
2942 * zc_nvlist_src{_size} nvlist of delegated permissions
2943 * zc_perm_action allow/unallow flag
2948 zfs_ioc_set_fsacl(zfs_cmd_t *zc)
2951 nvlist_t *fsaclnv = NULL;
2953 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2954 zc->zc_iflags, &fsaclnv)) != 0)
2958 * Verify nvlist is constructed correctly
2960 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
2961 nvlist_free(fsaclnv);
2962 return (SET_ERROR(EINVAL));
2966 * If we don't have PRIV_SYS_MOUNT, then validate
2967 * that user is allowed to hand out each permission in
2971 error = secpolicy_zfs(CRED());
2973 if (zc->zc_perm_action == B_FALSE) {
2974 error = dsl_deleg_can_allow(zc->zc_name,
2977 error = dsl_deleg_can_unallow(zc->zc_name,
2983 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action);
2985 nvlist_free(fsaclnv);
2991 * zc_name name of filesystem
2994 * zc_nvlist_src{_size} nvlist of delegated permissions
2997 zfs_ioc_get_fsacl(zfs_cmd_t *zc)
3002 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) {
3003 error = put_nvlist(zc, nvp);
3011 * Search the vfs list for a specified resource. Returns a pointer to it
3012 * or NULL if no suitable entry is found. The caller of this routine
3013 * is responsible for releasing the returned vfs pointer.
3016 zfs_get_vfs(const char *resource)
3020 mtx_lock(&mountlist_mtx);
3021 TAILQ_FOREACH(vfsp, &mountlist, mnt_list) {
3022 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) {
3027 mtx_unlock(&mountlist_mtx);
3033 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
3035 zfs_creat_t *zct = arg;
3037 zfs_create_fs(os, cr, zct->zct_zplprops, tx);
3040 #define ZFS_PROP_UNDEFINED ((uint64_t)-1)
3044 * os parent objset pointer (NULL if root fs)
3045 * fuids_ok fuids allowed in this version of the spa?
3046 * sa_ok SAs allowed in this version of the spa?
3047 * createprops list of properties requested by creator
3050 * zplprops values for the zplprops we attach to the master node object
3051 * is_ci true if requested file system will be purely case-insensitive
3053 * Determine the settings for utf8only, normalization and
3054 * casesensitivity. Specific values may have been requested by the
3055 * creator and/or we can inherit values from the parent dataset. If
3056 * the file system is of too early a vintage, a creator can not
3057 * request settings for these properties, even if the requested
3058 * setting is the default value. We don't actually want to create dsl
3059 * properties for these, so remove them from the source nvlist after
3063 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver,
3064 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops,
3065 nvlist_t *zplprops, boolean_t *is_ci)
3067 uint64_t sense = ZFS_PROP_UNDEFINED;
3068 uint64_t norm = ZFS_PROP_UNDEFINED;
3069 uint64_t u8 = ZFS_PROP_UNDEFINED;
3071 ASSERT(zplprops != NULL);
3074 * Pull out creator prop choices, if any.
3077 (void) nvlist_lookup_uint64(createprops,
3078 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver);
3079 (void) nvlist_lookup_uint64(createprops,
3080 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm);
3081 (void) nvlist_remove_all(createprops,
3082 zfs_prop_to_name(ZFS_PROP_NORMALIZE));
3083 (void) nvlist_lookup_uint64(createprops,
3084 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8);
3085 (void) nvlist_remove_all(createprops,
3086 zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
3087 (void) nvlist_lookup_uint64(createprops,
3088 zfs_prop_to_name(ZFS_PROP_CASE), &sense);
3089 (void) nvlist_remove_all(createprops,
3090 zfs_prop_to_name(ZFS_PROP_CASE));
3094 * If the zpl version requested is whacky or the file system
3095 * or pool is version is too "young" to support normalization
3096 * and the creator tried to set a value for one of the props,
3099 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) ||
3100 (zplver >= ZPL_VERSION_FUID && !fuids_ok) ||
3101 (zplver >= ZPL_VERSION_SA && !sa_ok) ||
3102 (zplver < ZPL_VERSION_NORMALIZATION &&
3103 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
3104 sense != ZFS_PROP_UNDEFINED)))
3105 return (SET_ERROR(ENOTSUP));
3108 * Put the version in the zplprops
3110 VERIFY(nvlist_add_uint64(zplprops,
3111 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
3113 if (norm == ZFS_PROP_UNDEFINED)
3114 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0);
3115 VERIFY(nvlist_add_uint64(zplprops,
3116 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
3119 * If we're normalizing, names must always be valid UTF-8 strings.
3123 if (u8 == ZFS_PROP_UNDEFINED)
3124 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0);
3125 VERIFY(nvlist_add_uint64(zplprops,
3126 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
3128 if (sense == ZFS_PROP_UNDEFINED)
3129 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0);
3130 VERIFY(nvlist_add_uint64(zplprops,
3131 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
3134 *is_ci = (sense == ZFS_CASE_INSENSITIVE);
3140 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
3141 nvlist_t *zplprops, boolean_t *is_ci)
3143 boolean_t fuids_ok, sa_ok;
3144 uint64_t zplver = ZPL_VERSION;
3145 objset_t *os = NULL;
3146 char parentname[MAXNAMELEN];
3152 (void) strlcpy(parentname, dataset, sizeof (parentname));
3153 cp = strrchr(parentname, '/');
3157 if ((error = spa_open(dataset, &spa, FTAG)) != 0)
3160 spa_vers = spa_version(spa);
3161 spa_close(spa, FTAG);
3163 zplver = zfs_zpl_version_map(spa_vers);
3164 fuids_ok = (zplver >= ZPL_VERSION_FUID);
3165 sa_ok = (zplver >= ZPL_VERSION_SA);
3168 * Open parent object set so we can inherit zplprop values.
3170 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0)
3173 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops,
3175 dmu_objset_rele(os, FTAG);
3180 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops,
3181 nvlist_t *zplprops, boolean_t *is_ci)
3185 uint64_t zplver = ZPL_VERSION;
3188 zplver = zfs_zpl_version_map(spa_vers);
3189 fuids_ok = (zplver >= ZPL_VERSION_FUID);
3190 sa_ok = (zplver >= ZPL_VERSION_SA);
3192 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok,
3193 createprops, zplprops, is_ci);
3199 * "type" -> dmu_objset_type_t (int32)
3200 * (optional) "props" -> { prop -> value }
3203 * outnvl: propname -> error code (int32)
3206 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3209 zfs_creat_t zct = { 0 };
3210 nvlist_t *nvprops = NULL;
3211 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
3213 dmu_objset_type_t type;
3214 boolean_t is_insensitive = B_FALSE;
3216 if (nvlist_lookup_int32(innvl, "type", &type32) != 0)
3217 return (SET_ERROR(EINVAL));
3219 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops);
3223 cbfunc = zfs_create_cb;
3227 cbfunc = zvol_create_cb;
3234 if (strchr(fsname, '@') ||
3235 strchr(fsname, '%'))
3236 return (SET_ERROR(EINVAL));
3238 zct.zct_props = nvprops;
3241 return (SET_ERROR(EINVAL));
3243 if (type == DMU_OST_ZVOL) {
3244 uint64_t volsize, volblocksize;
3246 if (nvprops == NULL)
3247 return (SET_ERROR(EINVAL));
3248 if (nvlist_lookup_uint64(nvprops,
3249 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0)
3250 return (SET_ERROR(EINVAL));
3252 if ((error = nvlist_lookup_uint64(nvprops,
3253 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
3254 &volblocksize)) != 0 && error != ENOENT)
3255 return (SET_ERROR(EINVAL));
3258 volblocksize = zfs_prop_default_numeric(
3259 ZFS_PROP_VOLBLOCKSIZE);
3261 if ((error = zvol_check_volblocksize(
3262 volblocksize)) != 0 ||
3263 (error = zvol_check_volsize(volsize,
3264 volblocksize)) != 0)
3266 } else if (type == DMU_OST_ZFS) {
3270 * We have to have normalization and
3271 * case-folding flags correct when we do the
3272 * file system creation, so go figure them out
3275 VERIFY(nvlist_alloc(&zct.zct_zplprops,
3276 NV_UNIQUE_NAME, KM_SLEEP) == 0);
3277 error = zfs_fill_zplprops(fsname, nvprops,
3278 zct.zct_zplprops, &is_insensitive);
3280 nvlist_free(zct.zct_zplprops);
3285 error = dmu_objset_create(fsname, type,
3286 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
3287 nvlist_free(zct.zct_zplprops);
3290 * It would be nice to do this atomically.
3293 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL,
3296 (void) dsl_destroy_head(fsname);
3299 if (error == 0 && type == DMU_OST_ZVOL)
3300 zvol_create_minors(fsname);
3307 * "origin" -> name of origin snapshot
3308 * (optional) "props" -> { prop -> value }
3311 * outnvl: propname -> error code (int32)
3314 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3317 nvlist_t *nvprops = NULL;
3320 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0)
3321 return (SET_ERROR(EINVAL));
3322 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops);
3324 if (strchr(fsname, '@') ||
3325 strchr(fsname, '%'))
3326 return (SET_ERROR(EINVAL));
3328 if (dataset_namecheck(origin_name, NULL, NULL) != 0)
3329 return (SET_ERROR(EINVAL));
3330 error = dmu_objset_clone(fsname, origin_name);
3335 * It would be nice to do this atomically.
3338 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL,
3341 (void) dsl_destroy_head(fsname);
3345 zvol_create_minors(fsname);
3352 * "snaps" -> { snapshot1, snapshot2 }
3353 * (optional) "props" -> { prop -> value (string) }
3356 * outnvl: snapshot -> error code (int32)
3359 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3362 nvlist_t *props = NULL;
3366 (void) nvlist_lookup_nvlist(innvl, "props", &props);
3367 if ((error = zfs_check_userprops(poolname, props)) != 0)
3370 if (!nvlist_empty(props) &&
3371 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS))
3372 return (SET_ERROR(ENOTSUP));
3374 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
3375 return (SET_ERROR(EINVAL));
3376 poollen = strlen(poolname);
3377 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
3378 pair = nvlist_next_nvpair(snaps, pair)) {
3379 const char *name = nvpair_name(pair);
3380 const char *cp = strchr(name, '@');
3383 * The snap name must contain an @, and the part after it must
3384 * contain only valid characters.
3387 zfs_component_namecheck(cp + 1, NULL, NULL) != 0)
3388 return (SET_ERROR(EINVAL));
3391 * The snap must be in the specified pool.
3393 if (strncmp(name, poolname, poollen) != 0 ||
3394 (name[poollen] != '/' && name[poollen] != '@'))
3395 return (SET_ERROR(EXDEV));
3397 /* This must be the only snap of this fs. */
3398 for (nvpair_t *pair2 = nvlist_next_nvpair(snaps, pair);
3399 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) {
3400 if (strncmp(name, nvpair_name(pair2), cp - name + 1)
3402 return (SET_ERROR(EXDEV));
3407 error = dsl_dataset_snapshot(snaps, props, outnvl);
3412 * innvl: "message" -> string
3416 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl)
3424 * The poolname in the ioctl is not set, we get it from the TSD,
3425 * which was set at the end of the last successful ioctl that allows
3426 * logging. The secpolicy func already checked that it is set.
3427 * Only one log ioctl is allowed after each successful ioctl, so
3428 * we clear the TSD here.
3430 poolname = tsd_get(zfs_allow_log_key);
3431 (void) tsd_set(zfs_allow_log_key, NULL);
3432 error = spa_open(poolname, &spa, FTAG);
3437 if (nvlist_lookup_string(innvl, "message", &message) != 0) {
3438 spa_close(spa, FTAG);
3439 return (SET_ERROR(EINVAL));
3442 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
3443 spa_close(spa, FTAG);
3444 return (SET_ERROR(ENOTSUP));
3447 error = spa_history_log(spa, message);
3448 spa_close(spa, FTAG);
3453 * The dp_config_rwlock must not be held when calling this, because the
3454 * unmount may need to write out data.
3456 * This function is best-effort. Callers must deal gracefully if it
3457 * remains mounted (or is remounted after this call).
3459 * Returns 0 if the argument is not a snapshot, or it is not currently a
3460 * filesystem, or we were able to unmount it. Returns error code otherwise.
3463 zfs_unmount_snap(const char *snapname)
3469 if (strchr(snapname, '@') == NULL)
3472 vfsp = zfs_get_vfs(snapname);
3476 zfsvfs = vfsp->vfs_data;
3477 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os)));
3479 err = vn_vfswlock(vfsp->vfs_vnodecovered);
3482 return (SET_ERROR(err));
3485 * Always force the unmount for snapshots.
3489 (void) dounmount(vfsp, MS_FORCE, kcred);
3491 mtx_lock(&Giant); /* dounmount() */
3492 (void) dounmount(vfsp, MS_FORCE, curthread);
3493 mtx_unlock(&Giant); /* dounmount() */
3500 zfs_unmount_snap_cb(const char *snapname, void *arg)
3502 return (zfs_unmount_snap(snapname));
3506 * When a clone is destroyed, its origin may also need to be destroyed,
3507 * in which case it must be unmounted. This routine will do that unmount
3511 zfs_destroy_unmount_origin(const char *fsname)
3517 error = dmu_objset_hold(fsname, FTAG, &os);
3520 ds = dmu_objset_ds(os);
3521 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) {
3522 char originname[MAXNAMELEN];
3523 dsl_dataset_name(ds->ds_prev, originname);
3524 dmu_objset_rele(os, FTAG);
3525 (void) zfs_unmount_snap(originname);
3527 dmu_objset_rele(os, FTAG);
3533 * "snaps" -> { snapshot1, snapshot2 }
3534 * (optional boolean) "defer"
3537 * outnvl: snapshot -> error code (int32)
3542 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3549 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
3550 return (SET_ERROR(EINVAL));
3551 defer = nvlist_exists(innvl, "defer");
3553 poollen = strlen(poolname);
3554 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
3555 pair = nvlist_next_nvpair(snaps, pair)) {
3556 const char *name = nvpair_name(pair);
3559 * The snap must be in the specified pool to prevent the
3560 * invalid removal of zvol minors below.
3562 if (strncmp(name, poolname, poollen) != 0 ||
3563 (name[poollen] != '/' && name[poollen] != '@'))
3564 return (SET_ERROR(EXDEV));
3566 error = zfs_unmount_snap(name);
3569 #if defined(__FreeBSD__)
3570 zvol_remove_minors(name);
3574 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl));
3578 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>.
3579 * All bookmarks must be in the same pool.
3582 * bookmark1 -> snapshot1, bookmark2 -> snapshot2
3585 * outnvl: bookmark -> error code (int32)
3590 zfs_ioc_bookmark(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3592 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL);
3593 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) {
3597 * Verify the snapshot argument.
3599 if (nvpair_value_string(pair, &snap_name) != 0)
3600 return (SET_ERROR(EINVAL));
3603 /* Verify that the keys (bookmarks) are unique */
3604 for (nvpair_t *pair2 = nvlist_next_nvpair(innvl, pair);
3605 pair2 != NULL; pair2 = nvlist_next_nvpair(innvl, pair2)) {
3606 if (strcmp(nvpair_name(pair), nvpair_name(pair2)) == 0)
3607 return (SET_ERROR(EINVAL));
3611 return (dsl_bookmark_create(innvl, outnvl));
3616 * property 1, property 2, ...
3620 * bookmark name 1 -> { property 1, property 2, ... },
3621 * bookmark name 2 -> { property 1, property 2, ... }
3626 zfs_ioc_get_bookmarks(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3628 return (dsl_get_bookmarks(fsname, innvl, outnvl));
3633 * bookmark name 1, bookmark name 2
3636 * outnvl: bookmark -> error code (int32)
3640 zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl,
3645 poollen = strlen(poolname);
3646 for (nvpair_t *pair = nvlist_next_nvpair(innvl, NULL);
3647 pair != NULL; pair = nvlist_next_nvpair(innvl, pair)) {
3648 const char *name = nvpair_name(pair);
3649 const char *cp = strchr(name, '#');
3652 * The bookmark name must contain an #, and the part after it
3653 * must contain only valid characters.
3656 zfs_component_namecheck(cp + 1, NULL, NULL) != 0)
3657 return (SET_ERROR(EINVAL));
3660 * The bookmark must be in the specified pool.
3662 if (strncmp(name, poolname, poollen) != 0 ||
3663 (name[poollen] != '/' && name[poollen] != '#'))
3664 return (SET_ERROR(EXDEV));
3665 (void) zvol_remove_minor(name);
3668 error = dsl_bookmark_destroy(innvl, outnvl);
3674 * zc_name name of dataset to destroy
3675 * zc_objset_type type of objset
3676 * zc_defer_destroy mark for deferred destroy
3681 zfs_ioc_destroy(zfs_cmd_t *zc)
3685 if (zc->zc_objset_type == DMU_OST_ZFS) {
3686 err = zfs_unmount_snap(zc->zc_name);
3691 if (strchr(zc->zc_name, '@'))
3692 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy);
3694 err = dsl_destroy_head(zc->zc_name);
3695 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0)
3697 zvol_remove_minors(zc->zc_name);
3699 (void) zvol_remove_minor(zc->zc_name);
3705 * fsname is name of dataset to rollback (to most recent snapshot)
3707 * innvl is not used.
3709 * outnvl: "target" -> name of most recent snapshot
3714 zfs_ioc_rollback(const char *fsname, nvlist_t *args, nvlist_t *outnvl)
3719 if (getzfsvfs(fsname, &zfsvfs) == 0) {
3720 error = zfs_suspend_fs(zfsvfs);
3724 error = dsl_dataset_rollback(fsname, zfsvfs, outnvl);
3725 resume_err = zfs_resume_fs(zfsvfs, fsname);
3726 error = error ? error : resume_err;
3728 VFS_RELE(zfsvfs->z_vfs);
3730 error = dsl_dataset_rollback(fsname, NULL, outnvl);
3736 recursive_unmount(const char *fsname, void *arg)
3738 const char *snapname = arg;
3739 char fullname[MAXNAMELEN];
3741 (void) snprintf(fullname, sizeof (fullname), "%s@%s", fsname, snapname);
3742 return (zfs_unmount_snap(fullname));
3747 * zc_name old name of dataset
3748 * zc_value new name of dataset
3749 * zc_cookie recursive flag (only valid for snapshots)
3754 zfs_ioc_rename(zfs_cmd_t *zc)
3756 boolean_t recursive = zc->zc_cookie & 1;
3758 boolean_t allow_mounted = zc->zc_cookie & 2;
3762 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
3763 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3764 strchr(zc->zc_value, '%'))
3765 return (SET_ERROR(EINVAL));
3767 at = strchr(zc->zc_name, '@');
3769 /* snaps must be in same fs */
3772 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1))
3773 return (SET_ERROR(EXDEV));
3776 if (zc->zc_objset_type == DMU_OST_ZFS) {
3778 if (zc->zc_objset_type == DMU_OST_ZFS && allow_mounted) {
3780 error = dmu_objset_find(zc->zc_name,
3781 recursive_unmount, at + 1,
3782 recursive ? DS_FIND_CHILDREN : 0);
3788 error = dsl_dataset_rename_snapshot(zc->zc_name,
3789 at + 1, strchr(zc->zc_value, '@') + 1, recursive);
3795 if (zc->zc_objset_type == DMU_OST_ZVOL)
3796 (void) zvol_remove_minor(zc->zc_name);
3798 return (dsl_dir_rename(zc->zc_name, zc->zc_value));
3803 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr)
3805 const char *propname = nvpair_name(pair);
3806 boolean_t issnap = (strchr(dsname, '@') != NULL);
3807 zfs_prop_t prop = zfs_name_to_prop(propname);
3811 if (prop == ZPROP_INVAL) {
3812 if (zfs_prop_user(propname)) {
3813 if (err = zfs_secpolicy_write_perms(dsname,
3814 ZFS_DELEG_PERM_USERPROP, cr))
3819 if (!issnap && zfs_prop_userquota(propname)) {
3820 const char *perm = NULL;
3821 const char *uq_prefix =
3822 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA];
3823 const char *gq_prefix =
3824 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA];
3826 if (strncmp(propname, uq_prefix,
3827 strlen(uq_prefix)) == 0) {
3828 perm = ZFS_DELEG_PERM_USERQUOTA;
3829 } else if (strncmp(propname, gq_prefix,
3830 strlen(gq_prefix)) == 0) {
3831 perm = ZFS_DELEG_PERM_GROUPQUOTA;
3833 /* USERUSED and GROUPUSED are read-only */
3834 return (SET_ERROR(EINVAL));
3837 if (err = zfs_secpolicy_write_perms(dsname, perm, cr))
3842 return (SET_ERROR(EINVAL));
3846 return (SET_ERROR(EINVAL));
3848 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
3850 * dsl_prop_get_all_impl() returns properties in this
3854 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
3855 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3860 * Check that this value is valid for this pool version
3863 case ZFS_PROP_COMPRESSION:
3865 * If the user specified gzip compression, make sure
3866 * the SPA supports it. We ignore any errors here since
3867 * we'll catch them later.
3869 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3870 nvpair_value_uint64(pair, &intval) == 0) {
3871 if (intval >= ZIO_COMPRESS_GZIP_1 &&
3872 intval <= ZIO_COMPRESS_GZIP_9 &&
3873 zfs_earlier_version(dsname,
3874 SPA_VERSION_GZIP_COMPRESSION)) {
3875 return (SET_ERROR(ENOTSUP));
3878 if (intval == ZIO_COMPRESS_ZLE &&
3879 zfs_earlier_version(dsname,
3880 SPA_VERSION_ZLE_COMPRESSION))
3881 return (SET_ERROR(ENOTSUP));
3883 if (intval == ZIO_COMPRESS_LZ4) {
3886 if ((err = spa_open(dsname, &spa, FTAG)) != 0)
3889 if (!spa_feature_is_enabled(spa,
3890 SPA_FEATURE_LZ4_COMPRESS)) {
3891 spa_close(spa, FTAG);
3892 return (SET_ERROR(ENOTSUP));
3894 spa_close(spa, FTAG);
3898 * If this is a bootable dataset then
3899 * verify that the compression algorithm
3900 * is supported for booting. We must return
3901 * something other than ENOTSUP since it
3902 * implies a downrev pool version.
3904 if (zfs_is_bootfs(dsname) &&
3905 !BOOTFS_COMPRESS_VALID(intval)) {
3906 return (SET_ERROR(ERANGE));
3911 case ZFS_PROP_COPIES:
3912 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS))
3913 return (SET_ERROR(ENOTSUP));
3916 case ZFS_PROP_DEDUP:
3917 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP))
3918 return (SET_ERROR(ENOTSUP));
3921 case ZFS_PROP_SHARESMB:
3922 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID))
3923 return (SET_ERROR(ENOTSUP));
3926 case ZFS_PROP_ACLINHERIT:
3927 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3928 nvpair_value_uint64(pair, &intval) == 0) {
3929 if (intval == ZFS_ACL_PASSTHROUGH_X &&
3930 zfs_earlier_version(dsname,
3931 SPA_VERSION_PASSTHROUGH_X))
3932 return (SET_ERROR(ENOTSUP));
3937 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED()));
3941 * Checks for a race condition to make sure we don't increment a feature flag
3945 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx)
3947 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
3948 spa_feature_t *featurep = arg;
3950 if (!spa_feature_is_active(spa, *featurep))
3953 return (SET_ERROR(EBUSY));
3957 * The callback invoked on feature activation in the sync task caused by
3958 * zfs_prop_activate_feature.
3961 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx)
3963 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
3964 spa_feature_t *featurep = arg;
3966 spa_feature_incr(spa, *featurep, tx);
3970 * Activates a feature on a pool in response to a property setting. This
3971 * creates a new sync task which modifies the pool to reflect the feature
3975 zfs_prop_activate_feature(spa_t *spa, spa_feature_t feature)
3979 /* EBUSY here indicates that the feature is already active */
3980 err = dsl_sync_task(spa_name(spa),
3981 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync,
3982 &feature, 2, ZFS_SPACE_CHECK_RESERVED);
3984 if (err != 0 && err != EBUSY)
3991 * Removes properties from the given props list that fail permission checks
3992 * needed to clear them and to restore them in case of a receive error. For each
3993 * property, make sure we have both set and inherit permissions.
3995 * Returns the first error encountered if any permission checks fail. If the
3996 * caller provides a non-NULL errlist, it also gives the complete list of names
3997 * of all the properties that failed a permission check along with the
3998 * corresponding error numbers. The caller is responsible for freeing the
4001 * If every property checks out successfully, zero is returned and the list
4002 * pointed at by errlist is NULL.
4005 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist)
4008 nvpair_t *pair, *next_pair;
4015 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
4017 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP);
4018 (void) strcpy(zc->zc_name, dataset);
4019 pair = nvlist_next_nvpair(props, NULL);
4020 while (pair != NULL) {
4021 next_pair = nvlist_next_nvpair(props, pair);
4023 (void) strcpy(zc->zc_value, nvpair_name(pair));
4024 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 ||
4025 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) {
4026 VERIFY(nvlist_remove_nvpair(props, pair) == 0);
4027 VERIFY(nvlist_add_int32(errors,
4028 zc->zc_value, err) == 0);
4032 kmem_free(zc, sizeof (zfs_cmd_t));
4034 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
4035 nvlist_free(errors);
4038 VERIFY(nvpair_value_int32(pair, &rv) == 0);
4041 if (errlist == NULL)
4042 nvlist_free(errors);
4050 propval_equals(nvpair_t *p1, nvpair_t *p2)
4052 if (nvpair_type(p1) == DATA_TYPE_NVLIST) {
4053 /* dsl_prop_get_all_impl() format */
4055 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0);
4056 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
4060 if (nvpair_type(p2) == DATA_TYPE_NVLIST) {
4062 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0);
4063 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
4067 if (nvpair_type(p1) != nvpair_type(p2))
4070 if (nvpair_type(p1) == DATA_TYPE_STRING) {
4071 char *valstr1, *valstr2;
4073 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0);
4074 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0);
4075 return (strcmp(valstr1, valstr2) == 0);
4077 uint64_t intval1, intval2;
4079 VERIFY(nvpair_value_uint64(p1, &intval1) == 0);
4080 VERIFY(nvpair_value_uint64(p2, &intval2) == 0);
4081 return (intval1 == intval2);
4086 * Remove properties from props if they are not going to change (as determined
4087 * by comparison with origprops). Remove them from origprops as well, since we
4088 * do not need to clear or restore properties that won't change.
4091 props_reduce(nvlist_t *props, nvlist_t *origprops)
4093 nvpair_t *pair, *next_pair;
4095 if (origprops == NULL)
4096 return; /* all props need to be received */
4098 pair = nvlist_next_nvpair(props, NULL);
4099 while (pair != NULL) {
4100 const char *propname = nvpair_name(pair);
4103 next_pair = nvlist_next_nvpair(props, pair);
4105 if ((nvlist_lookup_nvpair(origprops, propname,
4106 &match) != 0) || !propval_equals(pair, match))
4107 goto next; /* need to set received value */
4109 /* don't clear the existing received value */
4110 (void) nvlist_remove_nvpair(origprops, match);
4111 /* don't bother receiving the property */
4112 (void) nvlist_remove_nvpair(props, pair);
4119 static boolean_t zfs_ioc_recv_inject_err;
4124 * zc_name name of containing filesystem
4125 * zc_nvlist_src{_size} nvlist of properties to apply
4126 * zc_value name of snapshot to create
4127 * zc_string name of clone origin (if DRR_FLAG_CLONE)
4128 * zc_cookie file descriptor to recv from
4129 * zc_begin_record the BEGIN record of the stream (not byteswapped)
4130 * zc_guid force flag
4131 * zc_cleanup_fd cleanup-on-exit file descriptor
4132 * zc_action_handle handle for this guid/ds mapping (or zero on first call)
4135 * zc_cookie number of bytes read
4136 * zc_nvlist_dst{_size} error for each unapplied received property
4137 * zc_obj zprop_errflags_t
4138 * zc_action_handle handle for this guid/ds mapping
4141 zfs_ioc_recv(zfs_cmd_t *zc)
4144 dmu_recv_cookie_t drc;
4145 boolean_t force = (boolean_t)zc->zc_guid;
4148 int props_error = 0;
4151 nvlist_t *props = NULL; /* sent properties */
4152 nvlist_t *origprops = NULL; /* existing properties */
4153 char *origin = NULL;
4155 char tofs[ZFS_MAXNAMELEN];
4156 cap_rights_t rights;
4157 boolean_t first_recvd_props = B_FALSE;
4159 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
4160 strchr(zc->zc_value, '@') == NULL ||
4161 strchr(zc->zc_value, '%'))
4162 return (SET_ERROR(EINVAL));
4164 (void) strcpy(tofs, zc->zc_value);
4165 tosnap = strchr(tofs, '@');
4168 if (zc->zc_nvlist_src != 0 &&
4169 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
4170 zc->zc_iflags, &props)) != 0)
4174 fp = getf(fd, cap_rights_init(&rights, CAP_PREAD));
4177 return (SET_ERROR(EBADF));
4180 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
4182 if (zc->zc_string[0])
4183 origin = zc->zc_string;
4185 error = dmu_recv_begin(tofs, tosnap,
4186 &zc->zc_begin_record, force, origin, &drc);
4191 * Set properties before we receive the stream so that they are applied
4192 * to the new data. Note that we must call dmu_recv_stream() if
4193 * dmu_recv_begin() succeeds.
4195 if (props != NULL && !drc.drc_newfs) {
4196 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >=
4197 SPA_VERSION_RECVD_PROPS &&
4198 !dsl_prop_get_hasrecvd(tofs))
4199 first_recvd_props = B_TRUE;
4202 * If new received properties are supplied, they are to
4203 * completely replace the existing received properties, so stash
4204 * away the existing ones.
4206 if (dsl_prop_get_received(tofs, &origprops) == 0) {
4207 nvlist_t *errlist = NULL;
4209 * Don't bother writing a property if its value won't
4210 * change (and avoid the unnecessary security checks).
4212 * The first receive after SPA_VERSION_RECVD_PROPS is a
4213 * special case where we blow away all local properties
4216 if (!first_recvd_props)
4217 props_reduce(props, origprops);
4218 if (zfs_check_clearable(tofs, origprops, &errlist) != 0)
4219 (void) nvlist_merge(errors, errlist, 0);
4220 nvlist_free(errlist);
4222 if (clear_received_props(tofs, origprops,
4223 first_recvd_props ? NULL : props) != 0)
4224 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
4226 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
4230 if (props != NULL) {
4231 props_error = dsl_prop_set_hasrecvd(tofs);
4233 if (props_error == 0) {
4234 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
4239 if (zc->zc_nvlist_dst_size != 0 &&
4240 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 ||
4241 put_nvlist(zc, errors) != 0)) {
4243 * Caller made zc->zc_nvlist_dst less than the minimum expected
4244 * size or supplied an invalid address.
4246 props_error = SET_ERROR(EINVAL);
4250 error = dmu_recv_stream(&drc, fp, &off, zc->zc_cleanup_fd,
4251 &zc->zc_action_handle);
4254 zfsvfs_t *zfsvfs = NULL;
4256 if (getzfsvfs(tofs, &zfsvfs) == 0) {
4260 error = zfs_suspend_fs(zfsvfs);
4262 * If the suspend fails, then the recv_end will
4263 * likely also fail, and clean up after itself.
4265 end_err = dmu_recv_end(&drc, zfsvfs);
4267 error = zfs_resume_fs(zfsvfs, tofs);
4268 error = error ? error : end_err;
4269 VFS_RELE(zfsvfs->z_vfs);
4271 error = dmu_recv_end(&drc, NULL);
4275 zc->zc_cookie = off - fp->f_offset;
4276 if (off >= 0 && off <= MAXOFFSET_T)
4280 if (zfs_ioc_recv_inject_err) {
4281 zfs_ioc_recv_inject_err = B_FALSE;
4288 zvol_create_minors(tofs);
4292 * On error, restore the original props.
4294 if (error != 0 && props != NULL && !drc.drc_newfs) {
4295 if (clear_received_props(tofs, props, NULL) != 0) {
4297 * We failed to clear the received properties.
4298 * Since we may have left a $recvd value on the
4299 * system, we can't clear the $hasrecvd flag.
4301 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4302 } else if (first_recvd_props) {
4303 dsl_prop_unset_hasrecvd(tofs);
4306 if (origprops == NULL && !drc.drc_newfs) {
4307 /* We failed to stash the original properties. */
4308 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4312 * dsl_props_set() will not convert RECEIVED to LOCAL on or
4313 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL
4314 * explictly if we're restoring local properties cleared in the
4315 * first new-style receive.
4317 if (origprops != NULL &&
4318 zfs_set_prop_nvlist(tofs, (first_recvd_props ?
4319 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED),
4320 origprops, NULL) != 0) {
4322 * We stashed the original properties but failed to
4325 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4330 nvlist_free(origprops);
4331 nvlist_free(errors);
4335 error = props_error;
4342 * zc_name name of snapshot to send
4343 * zc_cookie file descriptor to send stream to
4344 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj)
4345 * zc_sendobj objsetid of snapshot to send
4346 * zc_fromobj objsetid of incremental fromsnap (may be zero)
4347 * zc_guid if set, estimate size of stream only. zc_cookie is ignored.
4348 * output size in zc_objset_type.
4349 * zc_flags if =1, WRITE_EMBEDDED records are permitted
4352 * zc_objset_type estimated size, if zc_guid is set
4355 zfs_ioc_send(zfs_cmd_t *zc)
4359 boolean_t estimate = (zc->zc_guid != 0);
4360 boolean_t embedok = (zc->zc_flags & 0x1);
4362 if (zc->zc_obj != 0) {
4364 dsl_dataset_t *tosnap;
4366 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4370 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap);
4372 dsl_pool_rele(dp, FTAG);
4376 if (dsl_dir_is_clone(tosnap->ds_dir))
4377 zc->zc_fromobj = tosnap->ds_dir->dd_phys->dd_origin_obj;
4378 dsl_dataset_rele(tosnap, FTAG);
4379 dsl_pool_rele(dp, FTAG);
4384 dsl_dataset_t *tosnap;
4385 dsl_dataset_t *fromsnap = NULL;
4387 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4391 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap);
4393 dsl_pool_rele(dp, FTAG);
4397 if (zc->zc_fromobj != 0) {
4398 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj,
4401 dsl_dataset_rele(tosnap, FTAG);
4402 dsl_pool_rele(dp, FTAG);
4407 error = dmu_send_estimate(tosnap, fromsnap,
4408 &zc->zc_objset_type);
4410 if (fromsnap != NULL)
4411 dsl_dataset_rele(fromsnap, FTAG);
4412 dsl_dataset_rele(tosnap, FTAG);
4413 dsl_pool_rele(dp, FTAG);
4416 cap_rights_t rights;
4418 fp = getf(zc->zc_cookie,
4419 cap_rights_init(&rights, CAP_WRITE));
4421 return (SET_ERROR(EBADF));
4424 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj,
4426 zc->zc_fromobj, embedok, zc->zc_cookie, fp->f_vnode, &off);
4428 zc->zc_fromobj, embedok, zc->zc_cookie, fp, &off);
4431 if (off >= 0 && off <= MAXOFFSET_T)
4433 releasef(zc->zc_cookie);
4440 * zc_name name of snapshot on which to report progress
4441 * zc_cookie file descriptor of send stream
4444 * zc_cookie number of bytes written in send stream thus far
4447 zfs_ioc_send_progress(zfs_cmd_t *zc)
4451 dmu_sendarg_t *dsp = NULL;
4454 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4458 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds);
4460 dsl_pool_rele(dp, FTAG);
4464 mutex_enter(&ds->ds_sendstream_lock);
4467 * Iterate over all the send streams currently active on this dataset.
4468 * If there's one which matches the specified file descriptor _and_ the
4469 * stream was started by the current process, return the progress of
4472 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL;
4473 dsp = list_next(&ds->ds_sendstreams, dsp)) {
4474 if (dsp->dsa_outfd == zc->zc_cookie &&
4475 dsp->dsa_proc == curproc)
4480 zc->zc_cookie = *(dsp->dsa_off);
4482 error = SET_ERROR(ENOENT);
4484 mutex_exit(&ds->ds_sendstream_lock);
4485 dsl_dataset_rele(ds, FTAG);
4486 dsl_pool_rele(dp, FTAG);
4491 zfs_ioc_inject_fault(zfs_cmd_t *zc)
4495 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id,
4496 &zc->zc_inject_record);
4499 zc->zc_guid = (uint64_t)id;
4505 zfs_ioc_clear_fault(zfs_cmd_t *zc)
4507 return (zio_clear_fault((int)zc->zc_guid));
4511 zfs_ioc_inject_list_next(zfs_cmd_t *zc)
4513 int id = (int)zc->zc_guid;
4516 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name),
4517 &zc->zc_inject_record);
4525 zfs_ioc_error_log(zfs_cmd_t *zc)
4529 size_t count = (size_t)zc->zc_nvlist_dst_size;
4531 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
4534 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst,
4537 zc->zc_nvlist_dst_size = count;
4539 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa);
4541 spa_close(spa, FTAG);
4547 zfs_ioc_clear(zfs_cmd_t *zc)
4554 * On zpool clear we also fix up missing slogs
4556 mutex_enter(&spa_namespace_lock);
4557 spa = spa_lookup(zc->zc_name);
4559 mutex_exit(&spa_namespace_lock);
4560 return (SET_ERROR(EIO));
4562 if (spa_get_log_state(spa) == SPA_LOG_MISSING) {
4563 /* we need to let spa_open/spa_load clear the chains */
4564 spa_set_log_state(spa, SPA_LOG_CLEAR);
4566 spa->spa_last_open_failed = 0;
4567 mutex_exit(&spa_namespace_lock);
4569 if (zc->zc_cookie & ZPOOL_NO_REWIND) {
4570 error = spa_open(zc->zc_name, &spa, FTAG);
4573 nvlist_t *config = NULL;
4575 if (zc->zc_nvlist_src == 0)
4576 return (SET_ERROR(EINVAL));
4578 if ((error = get_nvlist(zc->zc_nvlist_src,
4579 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) {
4580 error = spa_open_rewind(zc->zc_name, &spa, FTAG,
4582 if (config != NULL) {
4585 if ((err = put_nvlist(zc, config)) != 0)
4587 nvlist_free(config);
4589 nvlist_free(policy);
4596 spa_vdev_state_enter(spa, SCL_NONE);
4598 if (zc->zc_guid == 0) {
4601 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE);
4603 (void) spa_vdev_state_exit(spa, NULL, ENODEV);
4604 spa_close(spa, FTAG);
4605 return (SET_ERROR(ENODEV));
4609 vdev_clear(spa, vd);
4611 (void) spa_vdev_state_exit(spa, NULL, 0);
4614 * Resume any suspended I/Os.
4616 if (zio_resume(spa) != 0)
4617 error = SET_ERROR(EIO);
4619 spa_close(spa, FTAG);
4625 zfs_ioc_pool_reopen(zfs_cmd_t *zc)
4630 error = spa_open(zc->zc_name, &spa, FTAG);
4634 spa_vdev_state_enter(spa, SCL_NONE);
4637 * If a resilver is already in progress then set the
4638 * spa_scrub_reopen flag to B_TRUE so that we don't restart
4639 * the scan as a side effect of the reopen. Otherwise, let
4640 * vdev_open() decided if a resilver is required.
4642 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool);
4643 vdev_reopen(spa->spa_root_vdev);
4644 spa->spa_scrub_reopen = B_FALSE;
4646 (void) spa_vdev_state_exit(spa, NULL, 0);
4647 spa_close(spa, FTAG);
4652 * zc_name name of filesystem
4653 * zc_value name of origin snapshot
4656 * zc_string name of conflicting snapshot, if there is one
4659 zfs_ioc_promote(zfs_cmd_t *zc)
4664 * We don't need to unmount *all* the origin fs's snapshots, but
4667 cp = strchr(zc->zc_value, '@');
4670 (void) dmu_objset_find(zc->zc_value,
4671 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS);
4672 return (dsl_dataset_promote(zc->zc_name, zc->zc_string));
4676 * Retrieve a single {user|group}{used|quota}@... property.
4679 * zc_name name of filesystem
4680 * zc_objset_type zfs_userquota_prop_t
4681 * zc_value domain name (eg. "S-1-234-567-89")
4682 * zc_guid RID/UID/GID
4685 * zc_cookie property value
4688 zfs_ioc_userspace_one(zfs_cmd_t *zc)
4693 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
4694 return (SET_ERROR(EINVAL));
4696 error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE);
4700 error = zfs_userspace_one(zfsvfs,
4701 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie);
4702 zfsvfs_rele(zfsvfs, FTAG);
4709 * zc_name name of filesystem
4710 * zc_cookie zap cursor
4711 * zc_objset_type zfs_userquota_prop_t
4712 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist)
4715 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t)
4716 * zc_cookie zap cursor
4719 zfs_ioc_userspace_many(zfs_cmd_t *zc)
4722 int bufsize = zc->zc_nvlist_dst_size;
4725 return (SET_ERROR(ENOMEM));
4727 int error = zfsvfs_hold(zc->zc_name, FTAG, &zfsvfs, B_FALSE);
4731 void *buf = kmem_alloc(bufsize, KM_SLEEP);
4733 error = zfs_userspace_many(zfsvfs, zc->zc_objset_type, &zc->zc_cookie,
4734 buf, &zc->zc_nvlist_dst_size);
4737 error = ddi_copyout(buf,
4738 (void *)(uintptr_t)zc->zc_nvlist_dst,
4739 zc->zc_nvlist_dst_size, zc->zc_iflags);
4741 kmem_free(buf, bufsize);
4742 zfsvfs_rele(zfsvfs, FTAG);
4749 * zc_name name of filesystem
4755 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc)
4761 if (getzfsvfs(zc->zc_name, &zfsvfs) == 0) {
4762 if (!dmu_objset_userused_enabled(zfsvfs->z_os)) {
4764 * If userused is not enabled, it may be because the
4765 * objset needs to be closed & reopened (to grow the
4766 * objset_phys_t). Suspend/resume the fs will do that.
4768 error = zfs_suspend_fs(zfsvfs);
4770 dmu_objset_refresh_ownership(zfsvfs->z_os,
4772 error = zfs_resume_fs(zfsvfs, zc->zc_name);
4776 error = dmu_objset_userspace_upgrade(zfsvfs->z_os);
4777 VFS_RELE(zfsvfs->z_vfs);
4779 /* XXX kind of reading contents without owning */
4780 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4784 error = dmu_objset_userspace_upgrade(os);
4785 dmu_objset_rele(os, FTAG);
4793 * We don't want to have a hard dependency
4794 * against some special symbols in sharefs
4795 * nfs, and smbsrv. Determine them if needed when
4796 * the first file system is shared.
4797 * Neither sharefs, nfs or smbsrv are unloadable modules.
4799 int (*znfsexport_fs)(void *arg);
4800 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t);
4801 int (*zsmbexport_fs)(void *arg, boolean_t add_share);
4803 int zfs_nfsshare_inited;
4804 int zfs_smbshare_inited;
4806 ddi_modhandle_t nfs_mod;
4807 ddi_modhandle_t sharefs_mod;
4808 ddi_modhandle_t smbsrv_mod;
4810 kmutex_t zfs_share_lock;
4818 ASSERT(MUTEX_HELD(&zfs_share_lock));
4819 /* Both NFS and SMB shares also require sharetab support. */
4820 if (sharefs_mod == NULL && ((sharefs_mod =
4821 ddi_modopen("fs/sharefs",
4822 KRTLD_MODE_FIRST, &error)) == NULL)) {
4823 return (SET_ERROR(ENOSYS));
4825 if (zshare_fs == NULL && ((zshare_fs =
4826 (int (*)(enum sharefs_sys_op, share_t *, uint32_t))
4827 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) {
4828 return (SET_ERROR(ENOSYS));
4835 zfs_ioc_share(zfs_cmd_t *zc)
4841 switch (zc->zc_share.z_sharetype) {
4843 case ZFS_UNSHARE_NFS:
4844 if (zfs_nfsshare_inited == 0) {
4845 mutex_enter(&zfs_share_lock);
4846 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs",
4847 KRTLD_MODE_FIRST, &error)) == NULL)) {
4848 mutex_exit(&zfs_share_lock);
4849 return (SET_ERROR(ENOSYS));
4851 if (znfsexport_fs == NULL &&
4852 ((znfsexport_fs = (int (*)(void *))
4854 "nfs_export", &error)) == NULL)) {
4855 mutex_exit(&zfs_share_lock);
4856 return (SET_ERROR(ENOSYS));
4858 error = zfs_init_sharefs();
4860 mutex_exit(&zfs_share_lock);
4861 return (SET_ERROR(ENOSYS));
4863 zfs_nfsshare_inited = 1;
4864 mutex_exit(&zfs_share_lock);
4868 case ZFS_UNSHARE_SMB:
4869 if (zfs_smbshare_inited == 0) {
4870 mutex_enter(&zfs_share_lock);
4871 if (smbsrv_mod == NULL && ((smbsrv_mod =
4872 ddi_modopen("drv/smbsrv",
4873 KRTLD_MODE_FIRST, &error)) == NULL)) {
4874 mutex_exit(&zfs_share_lock);
4875 return (SET_ERROR(ENOSYS));
4877 if (zsmbexport_fs == NULL && ((zsmbexport_fs =
4878 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod,
4879 "smb_server_share", &error)) == NULL)) {
4880 mutex_exit(&zfs_share_lock);
4881 return (SET_ERROR(ENOSYS));
4883 error = zfs_init_sharefs();
4885 mutex_exit(&zfs_share_lock);
4886 return (SET_ERROR(ENOSYS));
4888 zfs_smbshare_inited = 1;
4889 mutex_exit(&zfs_share_lock);
4893 return (SET_ERROR(EINVAL));
4896 switch (zc->zc_share.z_sharetype) {
4898 case ZFS_UNSHARE_NFS:
4900 znfsexport_fs((void *)
4901 (uintptr_t)zc->zc_share.z_exportdata))
4905 case ZFS_UNSHARE_SMB:
4906 if (error = zsmbexport_fs((void *)
4907 (uintptr_t)zc->zc_share.z_exportdata,
4908 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ?
4915 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS ||
4916 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ?
4917 SHAREFS_ADD : SHAREFS_REMOVE;
4920 * Add or remove share from sharetab
4922 error = zshare_fs(opcode,
4923 (void *)(uintptr_t)zc->zc_share.z_sharedata,
4924 zc->zc_share.z_sharemax);
4933 ace_t full_access[] = {
4934 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0}
4939 * zc_name name of containing filesystem
4940 * zc_obj object # beyond which we want next in-use object #
4943 * zc_obj next in-use object #
4946 zfs_ioc_next_obj(zfs_cmd_t *zc)
4948 objset_t *os = NULL;
4951 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4955 error = dmu_object_next(os, &zc->zc_obj, B_FALSE,
4956 os->os_dsl_dataset->ds_phys->ds_prev_snap_txg);
4958 dmu_objset_rele(os, FTAG);
4964 * zc_name name of filesystem
4965 * zc_value prefix name for snapshot
4966 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
4969 * zc_value short name of new snapshot
4972 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc)
4979 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor);
4983 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value,
4984 (u_longlong_t)ddi_get_lbolt64());
4985 hold_name = kmem_asprintf("%%%s", zc->zc_value);
4987 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor,
4990 (void) strcpy(zc->zc_value, snap_name);
4993 zfs_onexit_fd_rele(zc->zc_cleanup_fd);
4999 * zc_name name of "to" snapshot
5000 * zc_value name of "from" snapshot
5001 * zc_cookie file descriptor to write diff data on
5004 * dmu_diff_record_t's to the file descriptor
5007 zfs_ioc_diff(zfs_cmd_t *zc)
5010 cap_rights_t rights;
5014 fp = getf(zc->zc_cookie, cap_rights_init(&rights, CAP_WRITE));
5016 return (SET_ERROR(EBADF));
5021 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off);
5023 error = dmu_diff(zc->zc_name, zc->zc_value, fp, &off);
5026 if (off >= 0 && off <= MAXOFFSET_T)
5028 releasef(zc->zc_cookie);
5035 * Remove all ACL files in shares dir
5038 zfs_smb_acl_purge(znode_t *dzp)
5041 zap_attribute_t zap;
5042 zfsvfs_t *zfsvfs = dzp->z_zfsvfs;
5045 for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id);
5046 (error = zap_cursor_retrieve(&zc, &zap)) == 0;
5047 zap_cursor_advance(&zc)) {
5048 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred,
5052 zap_cursor_fini(&zc);
5058 zfs_ioc_smb_acl(zfs_cmd_t *zc)
5063 vnode_t *resourcevp = NULL;
5072 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
5073 NO_FOLLOW, NULL, &vp)) != 0)
5076 /* Now make sure mntpnt and dataset are ZFS */
5078 if (strcmp(vp->v_vfsp->mnt_stat.f_fstypename, "zfs") != 0 ||
5079 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
5080 zc->zc_name) != 0)) {
5082 return (SET_ERROR(EINVAL));
5086 zfsvfs = dzp->z_zfsvfs;
5090 * Create share dir if its missing.
5092 mutex_enter(&zfsvfs->z_lock);
5093 if (zfsvfs->z_shares_dir == 0) {
5096 tx = dmu_tx_create(zfsvfs->z_os);
5097 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE,
5099 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
5100 error = dmu_tx_assign(tx, TXG_WAIT);
5104 error = zfs_create_share_dir(zfsvfs, tx);
5108 mutex_exit(&zfsvfs->z_lock);
5114 mutex_exit(&zfsvfs->z_lock);
5116 ASSERT(zfsvfs->z_shares_dir);
5117 if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &sharedir)) != 0) {
5123 switch (zc->zc_cookie) {
5124 case ZFS_SMB_ACL_ADD:
5125 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE;
5126 vattr.va_type = VREG;
5127 vattr.va_mode = S_IFREG|0777;
5131 vsec.vsa_mask = VSA_ACE;
5132 vsec.vsa_aclentp = &full_access;
5133 vsec.vsa_aclentsz = sizeof (full_access);
5134 vsec.vsa_aclcnt = 1;
5136 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string,
5137 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec);
5139 VN_RELE(resourcevp);
5142 case ZFS_SMB_ACL_REMOVE:
5143 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred,
5147 case ZFS_SMB_ACL_RENAME:
5148 if ((error = get_nvlist(zc->zc_nvlist_src,
5149 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) {
5154 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) ||
5155 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET,
5158 VN_RELE(ZTOV(sharedir));
5160 nvlist_free(nvlist);
5163 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target,
5165 nvlist_free(nvlist);
5168 case ZFS_SMB_ACL_PURGE:
5169 error = zfs_smb_acl_purge(sharedir);
5173 error = SET_ERROR(EINVAL);
5178 VN_RELE(ZTOV(sharedir));
5184 return (EOPNOTSUPP);
5190 * "holds" -> { snapname -> holdname (string), ... }
5191 * (optional) "cleanup_fd" -> fd (int32)
5195 * snapname -> error value (int32)
5201 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist)
5204 int cleanup_fd = -1;
5208 error = nvlist_lookup_nvlist(args, "holds", &holds);
5210 return (SET_ERROR(EINVAL));
5212 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) {
5213 error = zfs_onexit_fd_hold(cleanup_fd, &minor);
5218 error = dsl_dataset_user_hold(holds, minor, errlist);
5220 zfs_onexit_fd_rele(cleanup_fd);
5225 * innvl is not used.
5228 * holdname -> time added (uint64 seconds since epoch)
5234 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl)
5236 return (dsl_dataset_get_holds(snapname, outnvl));
5241 * snapname -> { holdname, ... }
5246 * snapname -> error value (int32)
5252 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist)
5254 return (dsl_dataset_user_release(holds, errlist));
5259 * zc_name name of new filesystem or snapshot
5260 * zc_value full name of old snapshot
5263 * zc_cookie space in bytes
5264 * zc_objset_type compressed space in bytes
5265 * zc_perm_action uncompressed space in bytes
5268 zfs_ioc_space_written(zfs_cmd_t *zc)
5272 dsl_dataset_t *new, *old;
5274 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
5277 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new);
5279 dsl_pool_rele(dp, FTAG);
5282 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old);
5284 dsl_dataset_rele(new, FTAG);
5285 dsl_pool_rele(dp, FTAG);
5289 error = dsl_dataset_space_written(old, new, &zc->zc_cookie,
5290 &zc->zc_objset_type, &zc->zc_perm_action);
5291 dsl_dataset_rele(old, FTAG);
5292 dsl_dataset_rele(new, FTAG);
5293 dsl_pool_rele(dp, FTAG);
5299 * "firstsnap" -> snapshot name
5303 * "used" -> space in bytes
5304 * "compressed" -> compressed space in bytes
5305 * "uncompressed" -> uncompressed space in bytes
5309 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl)
5313 dsl_dataset_t *new, *old;
5315 uint64_t used, comp, uncomp;
5317 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0)
5318 return (SET_ERROR(EINVAL));
5320 error = dsl_pool_hold(lastsnap, FTAG, &dp);
5324 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new);
5326 dsl_pool_rele(dp, FTAG);
5329 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old);
5331 dsl_dataset_rele(new, FTAG);
5332 dsl_pool_rele(dp, FTAG);
5336 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp);
5337 dsl_dataset_rele(old, FTAG);
5338 dsl_dataset_rele(new, FTAG);
5339 dsl_pool_rele(dp, FTAG);
5340 fnvlist_add_uint64(outnvl, "used", used);
5341 fnvlist_add_uint64(outnvl, "compressed", comp);
5342 fnvlist_add_uint64(outnvl, "uncompressed", uncomp);
5347 zfs_ioc_jail(zfs_cmd_t *zc)
5350 return (zone_dataset_attach(curthread->td_ucred, zc->zc_name,
5351 (int)zc->zc_jailid));
5355 zfs_ioc_unjail(zfs_cmd_t *zc)
5358 return (zone_dataset_detach(curthread->td_ucred, zc->zc_name,
5359 (int)zc->zc_jailid));
5364 * "fd" -> file descriptor to write stream to (int32)
5365 * (optional) "fromsnap" -> full snap name to send an incremental from
5366 * (optional) "embedok" -> (value ignored)
5367 * presence indicates DRR_WRITE_EMBEDDED records are permitted
5374 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl)
5376 cap_rights_t rights;
5379 char *fromname = NULL;
5383 error = nvlist_lookup_int32(innvl, "fd", &fd);
5385 return (SET_ERROR(EINVAL));
5387 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname);
5389 embedok = nvlist_exists(innvl, "embedok");
5391 file_t *fp = getf(fd, cap_rights_init(&rights, CAP_READ));
5393 return (SET_ERROR(EBADF));
5397 error = dmu_send(snapname, fromname, embedok, fd, fp->f_vnode, &off);
5399 error = dmu_send(snapname, fromname, embedok, fd, fp, &off);
5403 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
5414 * Determine approximately how large a zfs send stream will be -- the number
5415 * of bytes that will be written to the fd supplied to zfs_ioc_send_new().
5418 * (optional) "fromsnap" -> full snap name to send an incremental from
5422 * "space" -> bytes of space (uint64)
5426 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl)
5429 dsl_dataset_t *fromsnap = NULL;
5430 dsl_dataset_t *tosnap;
5435 error = dsl_pool_hold(snapname, FTAG, &dp);
5439 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap);
5441 dsl_pool_rele(dp, FTAG);
5445 error = nvlist_lookup_string(innvl, "fromsnap", &fromname);
5447 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap);
5449 dsl_dataset_rele(tosnap, FTAG);
5450 dsl_pool_rele(dp, FTAG);
5455 error = dmu_send_estimate(tosnap, fromsnap, &space);
5456 fnvlist_add_uint64(outnvl, "space", space);
5458 if (fromsnap != NULL)
5459 dsl_dataset_rele(fromsnap, FTAG);
5460 dsl_dataset_rele(tosnap, FTAG);
5461 dsl_pool_rele(dp, FTAG);
5466 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST];
5469 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5470 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
5471 boolean_t log_history, zfs_ioc_poolcheck_t pool_check)
5473 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST];
5475 ASSERT3U(ioc, >=, ZFS_IOC_FIRST);
5476 ASSERT3U(ioc, <, ZFS_IOC_LAST);
5477 ASSERT3P(vec->zvec_legacy_func, ==, NULL);
5478 ASSERT3P(vec->zvec_func, ==, NULL);
5480 vec->zvec_legacy_func = func;
5481 vec->zvec_secpolicy = secpolicy;
5482 vec->zvec_namecheck = namecheck;
5483 vec->zvec_allow_log = log_history;
5484 vec->zvec_pool_check = pool_check;
5488 * See the block comment at the beginning of this file for details on
5489 * each argument to this function.
5492 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func,
5493 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
5494 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist,
5495 boolean_t allow_log)
5497 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST];
5499 ASSERT3U(ioc, >=, ZFS_IOC_FIRST);
5500 ASSERT3U(ioc, <, ZFS_IOC_LAST);
5501 ASSERT3P(vec->zvec_legacy_func, ==, NULL);
5502 ASSERT3P(vec->zvec_func, ==, NULL);
5504 /* if we are logging, the name must be valid */
5505 ASSERT(!allow_log || namecheck != NO_NAME);
5507 vec->zvec_name = name;
5508 vec->zvec_func = func;
5509 vec->zvec_secpolicy = secpolicy;
5510 vec->zvec_namecheck = namecheck;
5511 vec->zvec_pool_check = pool_check;
5512 vec->zvec_smush_outnvlist = smush_outnvlist;
5513 vec->zvec_allow_log = allow_log;
5517 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5518 zfs_secpolicy_func_t *secpolicy, boolean_t log_history,
5519 zfs_ioc_poolcheck_t pool_check)
5521 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5522 POOL_NAME, log_history, pool_check);
5526 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5527 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check)
5529 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5530 DATASET_NAME, B_FALSE, pool_check);
5534 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func)
5536 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config,
5537 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5541 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5542 zfs_secpolicy_func_t *secpolicy)
5544 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5545 NO_NAME, B_FALSE, POOL_CHECK_NONE);
5549 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc,
5550 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy)
5552 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5553 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED);
5557 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func)
5559 zfs_ioctl_register_dataset_read_secpolicy(ioc, func,
5560 zfs_secpolicy_read);
5564 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5565 zfs_secpolicy_func_t *secpolicy)
5567 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5568 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5572 zfs_ioctl_init(void)
5574 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT,
5575 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME,
5576 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5578 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY,
5579 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME,
5580 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE);
5582 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS,
5583 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME,
5584 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5586 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW,
5587 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME,
5588 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5590 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE,
5591 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME,
5592 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5594 zfs_ioctl_register("create", ZFS_IOC_CREATE,
5595 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME,
5596 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5598 zfs_ioctl_register("clone", ZFS_IOC_CLONE,
5599 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME,
5600 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5602 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS,
5603 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME,
5604 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5606 zfs_ioctl_register("hold", ZFS_IOC_HOLD,
5607 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME,
5608 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5609 zfs_ioctl_register("release", ZFS_IOC_RELEASE,
5610 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME,
5611 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5613 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS,
5614 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME,
5615 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5617 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK,
5618 zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME,
5619 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE);
5621 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK,
5622 zfs_ioc_bookmark, zfs_secpolicy_bookmark, POOL_NAME,
5623 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5625 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS,
5626 zfs_ioc_get_bookmarks, zfs_secpolicy_read, DATASET_NAME,
5627 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5629 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS,
5630 zfs_ioc_destroy_bookmarks, zfs_secpolicy_destroy_bookmarks,
5632 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5634 /* IOCTLS that use the legacy function signature */
5636 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze,
5637 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY);
5639 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create,
5640 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5641 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN,
5643 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE,
5644 zfs_ioc_pool_upgrade);
5645 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD,
5647 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE,
5648 zfs_ioc_vdev_remove);
5649 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE,
5650 zfs_ioc_vdev_set_state);
5651 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH,
5652 zfs_ioc_vdev_attach);
5653 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH,
5654 zfs_ioc_vdev_detach);
5655 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH,
5656 zfs_ioc_vdev_setpath);
5657 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU,
5658 zfs_ioc_vdev_setfru);
5659 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS,
5660 zfs_ioc_pool_set_props);
5661 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT,
5662 zfs_ioc_vdev_split);
5663 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID,
5664 zfs_ioc_pool_reguid);
5666 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS,
5667 zfs_ioc_pool_configs, zfs_secpolicy_none);
5668 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT,
5669 zfs_ioc_pool_tryimport, zfs_secpolicy_config);
5670 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT,
5671 zfs_ioc_inject_fault, zfs_secpolicy_inject);
5672 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT,
5673 zfs_ioc_clear_fault, zfs_secpolicy_inject);
5674 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT,
5675 zfs_ioc_inject_list_next, zfs_secpolicy_inject);
5678 * pool destroy, and export don't log the history as part of
5679 * zfsdev_ioctl, but rather zfs_ioc_pool_export
5680 * does the logging of those commands.
5682 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy,
5683 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE);
5684 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export,
5685 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE);
5687 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats,
5688 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE);
5689 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props,
5690 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE);
5692 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log,
5693 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_NONE);
5694 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME,
5695 zfs_ioc_dsobj_to_dsname,
5696 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_NONE);
5697 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY,
5698 zfs_ioc_pool_get_history,
5699 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED);
5701 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import,
5702 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5704 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear,
5705 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5706 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen,
5707 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED);
5709 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN,
5710 zfs_ioc_space_written);
5711 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS,
5712 zfs_ioc_objset_recvd_props);
5713 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ,
5715 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL,
5717 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS,
5718 zfs_ioc_objset_stats);
5719 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS,
5720 zfs_ioc_objset_zplprops);
5721 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT,
5722 zfs_ioc_dataset_list_next);
5723 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT,
5724 zfs_ioc_snapshot_list_next);
5725 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS,
5726 zfs_ioc_send_progress);
5728 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF,
5729 zfs_ioc_diff, zfs_secpolicy_diff);
5730 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS,
5731 zfs_ioc_obj_to_stats, zfs_secpolicy_diff);
5732 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH,
5733 zfs_ioc_obj_to_path, zfs_secpolicy_diff);
5734 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE,
5735 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one);
5736 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY,
5737 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many);
5738 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND,
5739 zfs_ioc_send, zfs_secpolicy_send);
5741 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop,
5742 zfs_secpolicy_none);
5743 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy,
5744 zfs_secpolicy_destroy);
5745 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename,
5746 zfs_secpolicy_rename);
5747 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv,
5748 zfs_secpolicy_recv);
5749 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote,
5750 zfs_secpolicy_promote);
5751 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP,
5752 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop);
5753 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl,
5754 zfs_secpolicy_set_fsacl);
5756 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share,
5757 zfs_secpolicy_share, POOL_CHECK_NONE);
5758 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl,
5759 zfs_secpolicy_smb_acl, POOL_CHECK_NONE);
5760 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE,
5761 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade,
5762 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5763 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT,
5764 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot,
5765 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5768 zfs_ioctl_register_dataset_nolog(ZFS_IOC_JAIL, zfs_ioc_jail,
5769 zfs_secpolicy_config, POOL_CHECK_NONE);
5770 zfs_ioctl_register_dataset_nolog(ZFS_IOC_UNJAIL, zfs_ioc_unjail,
5771 zfs_secpolicy_config, POOL_CHECK_NONE);
5776 pool_status_check(const char *name, zfs_ioc_namecheck_t type,
5777 zfs_ioc_poolcheck_t check)
5782 ASSERT(type == POOL_NAME || type == DATASET_NAME);
5784 if (check & POOL_CHECK_NONE)
5787 error = spa_open(name, &spa, FTAG);
5789 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa))
5790 error = SET_ERROR(EAGAIN);
5791 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa))
5792 error = SET_ERROR(EROFS);
5793 spa_close(spa, FTAG);
5799 * Find a free minor number.
5802 zfsdev_minor_alloc(void)
5804 static minor_t last_minor;
5807 ASSERT(MUTEX_HELD(&spa_namespace_lock));
5809 for (m = last_minor + 1; m != last_minor; m++) {
5810 if (m > ZFSDEV_MAX_MINOR)
5812 if (ddi_get_soft_state(zfsdev_state, m) == NULL) {
5822 zfs_ctldev_init(struct cdev *devp)
5825 zfs_soft_state_t *zs;
5827 ASSERT(MUTEX_HELD(&spa_namespace_lock));
5829 minor = zfsdev_minor_alloc();
5831 return (SET_ERROR(ENXIO));
5833 if (ddi_soft_state_zalloc(zfsdev_state, minor) != DDI_SUCCESS)
5834 return (SET_ERROR(EAGAIN));
5836 devfs_set_cdevpriv((void *)(uintptr_t)minor, zfsdev_close);
5838 zs = ddi_get_soft_state(zfsdev_state, minor);
5839 zs->zss_type = ZSST_CTLDEV;
5840 zfs_onexit_init((zfs_onexit_t **)&zs->zss_data);
5846 zfs_ctldev_destroy(zfs_onexit_t *zo, minor_t minor)
5848 ASSERT(MUTEX_HELD(&spa_namespace_lock));
5850 zfs_onexit_destroy(zo);
5851 ddi_soft_state_free(zfsdev_state, minor);
5855 zfsdev_get_soft_state(minor_t minor, enum zfs_soft_state_type which)
5857 zfs_soft_state_t *zp;
5859 zp = ddi_get_soft_state(zfsdev_state, minor);
5860 if (zp == NULL || zp->zss_type != which)
5863 return (zp->zss_data);
5867 zfsdev_open(struct cdev *devp, int flag, int mode, struct thread *td)
5872 if (getminor(*devp) != 0)
5873 return (zvol_open(devp, flag, otyp, cr));
5876 /* This is the control device. Allocate a new minor if requested. */
5878 mutex_enter(&spa_namespace_lock);
5879 error = zfs_ctldev_init(devp);
5880 mutex_exit(&spa_namespace_lock);
5887 zfsdev_close(void *data)
5890 minor_t minor = (minor_t)(uintptr_t)data;
5895 mutex_enter(&spa_namespace_lock);
5896 zo = zfsdev_get_soft_state(minor, ZSST_CTLDEV);
5898 mutex_exit(&spa_namespace_lock);
5901 zfs_ctldev_destroy(zo, minor);
5902 mutex_exit(&spa_namespace_lock);
5906 zfsdev_ioctl(struct cdev *dev, u_long zcmd, caddr_t arg, int flag,
5913 minor_t minor = getminor(dev);
5915 zfs_iocparm_t *zc_iocparm;
5916 int cflag, cmd, oldvecnum;
5917 boolean_t newioc, compat;
5918 void *compat_zc = NULL;
5919 cred_t *cr = td->td_ucred;
5921 const zfs_ioc_vec_t *vec;
5922 char *saved_poolname = NULL;
5923 nvlist_t *innvl = NULL;
5925 cflag = ZFS_CMD_COMPAT_NONE;
5927 newioc = B_TRUE; /* "new" style (zfs_iocparm_t) ioctl */
5929 len = IOCPARM_LEN(zcmd);
5930 vecnum = cmd = zcmd & 0xff;
5933 * Check if we are talking to supported older binaries
5934 * and translate zfs_cmd if necessary
5936 if (len != sizeof(zfs_iocparm_t)) {
5943 case sizeof(zfs_cmd_zcmd_t):
5944 cflag = ZFS_CMD_COMPAT_LZC;
5946 case sizeof(zfs_cmd_deadman_t):
5947 cflag = ZFS_CMD_COMPAT_DEADMAN;
5949 case sizeof(zfs_cmd_v28_t):
5950 cflag = ZFS_CMD_COMPAT_V28;
5952 case sizeof(zfs_cmd_v15_t):
5953 cflag = ZFS_CMD_COMPAT_V15;
5954 vecnum = zfs_ioctl_v15_to_v28[cmd];
5957 * Return without further handling
5958 * if the command is blacklisted.
5960 if (vecnum == ZFS_IOC_COMPAT_PASS)
5962 else if (vecnum == ZFS_IOC_COMPAT_FAIL)
5971 vecnum = cmd - ZFS_IOC_FIRST;
5972 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip));
5975 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
5976 return (SET_ERROR(EINVAL));
5977 vec = &zfs_ioc_vec[vecnum];
5979 zc = kmem_zalloc(sizeof(zfs_cmd_t), KM_SLEEP);
5982 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag);
5984 error = SET_ERROR(EFAULT);
5987 #else /* !illumos */
5988 bzero(zc, sizeof(zfs_cmd_t));
5991 zc_iocparm = (void *)arg;
5993 switch (zc_iocparm->zfs_ioctl_version) {
5994 case ZFS_IOCVER_CURRENT:
5995 if (zc_iocparm->zfs_cmd_size != sizeof(zfs_cmd_t)) {
5996 error = SET_ERROR(EINVAL);
6000 case ZFS_IOCVER_ZCMD:
6001 if (zc_iocparm->zfs_cmd_size > sizeof(zfs_cmd_t) ||
6002 zc_iocparm->zfs_cmd_size < sizeof(zfs_cmd_zcmd_t)) {
6003 error = SET_ERROR(EFAULT);
6007 cflag = ZFS_CMD_COMPAT_ZCMD;
6010 error = SET_ERROR(EINVAL);
6016 ASSERT(sizeof(zfs_cmd_t) >= zc_iocparm->zfs_cmd_size);
6017 compat_zc = kmem_zalloc(sizeof(zfs_cmd_t), KM_SLEEP);
6018 bzero(compat_zc, sizeof(zfs_cmd_t));
6020 error = ddi_copyin((void *)(uintptr_t)zc_iocparm->zfs_cmd,
6021 compat_zc, zc_iocparm->zfs_cmd_size, flag);
6023 error = SET_ERROR(EFAULT);
6027 error = ddi_copyin((void *)(uintptr_t)zc_iocparm->zfs_cmd,
6028 zc, zc_iocparm->zfs_cmd_size, flag);
6030 error = SET_ERROR(EFAULT);
6038 ASSERT(compat_zc != NULL);
6039 zfs_cmd_compat_get(zc, compat_zc, cflag);
6041 ASSERT(compat_zc == NULL);
6042 zfs_cmd_compat_get(zc, arg, cflag);
6045 error = zfs_ioctl_compat_pre(zc, &vecnum, cflag);
6048 if (oldvecnum != vecnum)
6049 vec = &zfs_ioc_vec[vecnum];
6051 #endif /* !illumos */
6053 zc->zc_iflags = flag & FKIOCTL;
6054 if (zc->zc_nvlist_src_size != 0) {
6055 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
6056 zc->zc_iflags, &innvl);
6061 /* rewrite innvl for backwards compatibility */
6063 innvl = zfs_ioctl_compat_innvl(zc, innvl, vecnum, cflag);
6066 * Ensure that all pool/dataset names are valid before we pass down to
6069 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
6070 switch (vec->zvec_namecheck) {
6072 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
6073 error = SET_ERROR(EINVAL);
6075 error = pool_status_check(zc->zc_name,
6076 vec->zvec_namecheck, vec->zvec_pool_check);
6080 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
6081 error = SET_ERROR(EINVAL);
6083 error = pool_status_check(zc->zc_name,
6084 vec->zvec_namecheck, vec->zvec_pool_check);
6091 if (error == 0 && !(flag & FKIOCTL))
6092 error = vec->zvec_secpolicy(zc, innvl, cr);
6097 /* legacy ioctls can modify zc_name */
6098 len = strcspn(zc->zc_name, "/@#") + 1;
6099 saved_poolname = kmem_alloc(len, KM_SLEEP);
6100 (void) strlcpy(saved_poolname, zc->zc_name, len);
6102 if (vec->zvec_func != NULL) {
6106 nvlist_t *lognv = NULL;
6108 ASSERT(vec->zvec_legacy_func == NULL);
6111 * Add the innvl to the lognv before calling the func,
6112 * in case the func changes the innvl.
6114 if (vec->zvec_allow_log) {
6115 lognv = fnvlist_alloc();
6116 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL,
6118 if (!nvlist_empty(innvl)) {
6119 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL,
6124 outnvl = fnvlist_alloc();
6125 error = vec->zvec_func(zc->zc_name, innvl, outnvl);
6127 if (error == 0 && vec->zvec_allow_log &&
6128 spa_open(zc->zc_name, &spa, FTAG) == 0) {
6129 if (!nvlist_empty(outnvl)) {
6130 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL,
6133 (void) spa_history_log_nvl(spa, lognv);
6134 spa_close(spa, FTAG);
6136 fnvlist_free(lognv);
6138 /* rewrite outnvl for backwards compatibility */
6140 outnvl = zfs_ioctl_compat_outnvl(zc, outnvl, vecnum,
6143 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) {
6145 if (vec->zvec_smush_outnvlist) {
6146 smusherror = nvlist_smush(outnvl,
6147 zc->zc_nvlist_dst_size);
6149 if (smusherror == 0)
6150 puterror = put_nvlist(zc, outnvl);
6156 nvlist_free(outnvl);
6158 error = vec->zvec_legacy_func(zc);
6165 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag);
6166 if (error == 0 && rc != 0)
6167 error = SET_ERROR(EFAULT);
6170 zfs_ioctl_compat_post(zc, cmd, cflag);
6172 ASSERT(compat_zc != NULL);
6173 ASSERT(sizeof(zfs_cmd_t) >= zc_iocparm->zfs_cmd_size);
6175 zfs_cmd_compat_put(zc, compat_zc, vecnum, cflag);
6176 rc = ddi_copyout(compat_zc,
6177 (void *)(uintptr_t)zc_iocparm->zfs_cmd,
6178 zc_iocparm->zfs_cmd_size, flag);
6179 if (error == 0 && rc != 0)
6180 error = SET_ERROR(EFAULT);
6181 kmem_free(compat_zc, sizeof (zfs_cmd_t));
6183 zfs_cmd_compat_put(zc, arg, vecnum, cflag);
6188 rc = ddi_copyout(zc, (void *)(uintptr_t)zc_iocparm->zfs_cmd,
6189 sizeof (zfs_cmd_t), flag);
6190 if (error == 0 && rc != 0)
6191 error = SET_ERROR(EFAULT);
6194 if (error == 0 && vec->zvec_allow_log) {
6195 char *s = tsd_get(zfs_allow_log_key);
6198 (void) tsd_set(zfs_allow_log_key, saved_poolname);
6200 if (saved_poolname != NULL)
6201 strfree(saved_poolname);
6204 kmem_free(zc, sizeof (zfs_cmd_t));
6210 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
6212 if (cmd != DDI_ATTACH)
6213 return (DDI_FAILURE);
6215 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0,
6216 DDI_PSEUDO, 0) == DDI_FAILURE)
6217 return (DDI_FAILURE);
6221 ddi_report_dev(dip);
6223 return (DDI_SUCCESS);
6227 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
6229 if (spa_busy() || zfs_busy() || zvol_busy())
6230 return (DDI_FAILURE);
6232 if (cmd != DDI_DETACH)
6233 return (DDI_FAILURE);
6237 ddi_prop_remove_all(dip);
6238 ddi_remove_minor_node(dip, NULL);
6240 return (DDI_SUCCESS);
6245 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
6248 case DDI_INFO_DEVT2DEVINFO:
6250 return (DDI_SUCCESS);
6252 case DDI_INFO_DEVT2INSTANCE:
6253 *result = (void *)0;
6254 return (DDI_SUCCESS);
6257 return (DDI_FAILURE);
6262 * OK, so this is a little weird.
6264 * /dev/zfs is the control node, i.e. minor 0.
6265 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0.
6267 * /dev/zfs has basically nothing to do except serve up ioctls,
6268 * so most of the standard driver entry points are in zvol.c.
6271 static struct cb_ops zfs_cb_ops = {
6272 zfsdev_open, /* open */
6273 zfsdev_close, /* close */
6274 zvol_strategy, /* strategy */
6276 zvol_dump, /* dump */
6277 zvol_read, /* read */
6278 zvol_write, /* write */
6279 zfsdev_ioctl, /* ioctl */
6283 nochpoll, /* poll */
6284 ddi_prop_op, /* prop_op */
6285 NULL, /* streamtab */
6286 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */
6287 CB_REV, /* version */
6288 nodev, /* async read */
6289 nodev, /* async write */
6292 static struct dev_ops zfs_dev_ops = {
6293 DEVO_REV, /* version */
6295 zfs_info, /* info */
6296 nulldev, /* identify */
6297 nulldev, /* probe */
6298 zfs_attach, /* attach */
6299 zfs_detach, /* detach */
6301 &zfs_cb_ops, /* driver operations */
6302 NULL, /* no bus operations */
6304 ddi_quiesce_not_needed, /* quiesce */
6307 static struct modldrv zfs_modldrv = {
6313 static struct modlinkage modlinkage = {
6315 (void *)&zfs_modlfs,
6316 (void *)&zfs_modldrv,
6321 static struct cdevsw zfs_cdevsw = {
6322 .d_version = D_VERSION,
6323 .d_open = zfsdev_open,
6324 .d_ioctl = zfsdev_ioctl,
6325 .d_name = ZFS_DEV_NAME
6329 zfs_allow_log_destroy(void *arg)
6331 char *poolname = arg;
6338 zfsdev = make_dev(&zfs_cdevsw, 0x0, UID_ROOT, GID_OPERATOR, 0666,
6346 destroy_dev(zfsdev);
6349 static struct root_hold_token *zfs_root_token;
6350 struct proc *zfsproc;
6358 spa_init(FREAD | FWRITE);
6363 if ((error = mod_install(&modlinkage)) != 0) {
6370 tsd_create(&zfs_fsyncer_key, NULL);
6371 tsd_create(&rrw_tsd_key, rrw_tsd_destroy);
6372 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy);
6374 error = ldi_ident_from_mod(&modlinkage, &zfs_li);
6376 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL);
6386 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled)
6387 return (SET_ERROR(EBUSY));
6389 if ((error = mod_remove(&modlinkage)) != 0)
6395 if (zfs_nfsshare_inited)
6396 (void) ddi_modclose(nfs_mod);
6397 if (zfs_smbshare_inited)
6398 (void) ddi_modclose(smbsrv_mod);
6399 if (zfs_nfsshare_inited || zfs_smbshare_inited)
6400 (void) ddi_modclose(sharefs_mod);
6402 tsd_destroy(&zfs_fsyncer_key);
6403 ldi_ident_release(zfs_li);
6405 mutex_destroy(&zfs_share_lock);
6411 _info(struct modinfo *modinfop)
6413 return (mod_info(&modlinkage, modinfop));
6417 static int zfs__init(void);
6418 static int zfs__fini(void);
6419 static void zfs_shutdown(void *, int);
6421 static eventhandler_tag zfs_shutdown_event_tag;
6427 zfs_root_token = root_mount_hold("ZFS");
6429 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL);
6431 spa_init(FREAD | FWRITE);
6436 tsd_create(&zfs_fsyncer_key, NULL);
6437 tsd_create(&rrw_tsd_key, rrw_tsd_destroy);
6438 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy);
6440 printf("ZFS storage pool version: features support (" SPA_VERSION_STRING ")\n");
6441 root_mount_rel(zfs_root_token);
6451 if (spa_busy() || zfs_busy() || zvol_busy() ||
6452 zio_injection_enabled) {
6461 tsd_destroy(&zfs_fsyncer_key);
6462 tsd_destroy(&rrw_tsd_key);
6463 tsd_destroy(&zfs_allow_log_key);
6465 mutex_destroy(&zfs_share_lock);
6471 zfs_shutdown(void *arg __unused, int howto __unused)
6475 * ZFS fini routines can not properly work in a panic-ed system.
6477 if (panicstr == NULL)
6483 zfs_modevent(module_t mod, int type, void *unused __unused)
6491 zfs_shutdown_event_tag = EVENTHANDLER_REGISTER(
6492 shutdown_post_sync, zfs_shutdown, NULL,
6493 SHUTDOWN_PRI_FIRST);
6497 if (err == 0 && zfs_shutdown_event_tag != NULL)
6498 EVENTHANDLER_DEREGISTER(shutdown_post_sync,
6499 zfs_shutdown_event_tag);
6506 return (EOPNOTSUPP);
6509 static moduledata_t zfs_mod = {
6514 DECLARE_MODULE(zfsctrl, zfs_mod, SI_SUB_VFS, SI_ORDER_ANY);
6515 MODULE_VERSION(zfsctrl, 1);
6516 MODULE_DEPEND(zfsctrl, opensolaris, 1, 1, 1);
6517 MODULE_DEPEND(zfsctrl, krpc, 1, 1, 1);
6518 MODULE_DEPEND(zfsctrl, acl_nfs4, 1, 1, 1);