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 * Portions Copyright 2011 Martin Matuska
25 * Portions Copyright 2012 Pawel Jakub Dawidek <pawel@dawidek.net>
26 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
27 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
28 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
29 * Copyright (c) 201i3 by Delphix. All rights reserved.
30 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
31 * Copyright (c) 2013 Steven Hartland. All rights reserved.
32 * Copyright (c) 2014, Nexenta Systems, Inc. All rights reserved.
38 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage
39 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool.
41 * There are two ways that we handle ioctls: the legacy way where almost
42 * all of the logic is in the ioctl callback, and the new way where most
43 * of the marshalling is handled in the common entry point, zfsdev_ioctl().
45 * Non-legacy ioctls should be registered by calling
46 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked
47 * from userland by lzc_ioctl().
49 * The registration arguments are as follows:
52 * The name of the ioctl. This is used for history logging. If the
53 * ioctl returns successfully (the callback returns 0), and allow_log
54 * is true, then a history log entry will be recorded with the input &
55 * output nvlists. The log entry can be printed with "zpool history -i".
58 * The ioctl request number, which userland will pass to ioctl(2).
59 * The ioctl numbers can change from release to release, because
60 * the caller (libzfs) must be matched to the kernel.
62 * zfs_secpolicy_func_t *secpolicy
63 * This function will be called before the zfs_ioc_func_t, to
64 * determine if this operation is permitted. It should return EPERM
65 * on failure, and 0 on success. Checks include determining if the
66 * dataset is visible in this zone, and if the user has either all
67 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission
68 * to do this operation on this dataset with "zfs allow".
70 * zfs_ioc_namecheck_t namecheck
71 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool
72 * name, a dataset name, or nothing. If the name is not well-formed,
73 * the ioctl will fail and the callback will not be called.
74 * Therefore, the callback can assume that the name is well-formed
75 * (e.g. is null-terminated, doesn't have more than one '@' character,
76 * doesn't have invalid characters).
78 * zfs_ioc_poolcheck_t pool_check
79 * This specifies requirements on the pool state. If the pool does
80 * not meet them (is suspended or is readonly), the ioctl will fail
81 * and the callback will not be called. If any checks are specified
82 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME.
83 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED |
84 * POOL_CHECK_READONLY).
86 * boolean_t smush_outnvlist
87 * If smush_outnvlist is true, then the output is presumed to be a
88 * list of errors, and it will be "smushed" down to fit into the
89 * caller's buffer, by removing some entries and replacing them with a
90 * single "N_MORE_ERRORS" entry indicating how many were removed. See
91 * nvlist_smush() for details. If smush_outnvlist is false, and the
92 * outnvlist does not fit into the userland-provided buffer, then the
93 * ioctl will fail with ENOMEM.
95 * zfs_ioc_func_t *func
96 * The callback function that will perform the operation.
98 * The callback should return 0 on success, or an error number on
99 * failure. If the function fails, the userland ioctl will return -1,
100 * and errno will be set to the callback's return value. The callback
101 * will be called with the following arguments:
104 * The name of the pool or dataset to operate on, from
105 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the
106 * expected type (pool, dataset, or none).
109 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or
110 * NULL if no input nvlist was provided. Changes to this nvlist are
111 * ignored. If the input nvlist could not be deserialized, the
112 * ioctl will fail and the callback will not be called.
115 * The output nvlist, initially empty. The callback can fill it in,
116 * and it will be returned to userland by serializing it into
117 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization
118 * fails (e.g. because the caller didn't supply a large enough
119 * buffer), then the overall ioctl will fail. See the
120 * 'smush_nvlist' argument above for additional behaviors.
122 * There are two typical uses of the output nvlist:
123 * - To return state, e.g. property values. In this case,
124 * smush_outnvlist should be false. If the buffer was not large
125 * enough, the caller will reallocate a larger buffer and try
128 * - To return multiple errors from an ioctl which makes on-disk
129 * changes. In this case, smush_outnvlist should be true.
130 * Ioctls which make on-disk modifications should generally not
131 * use the outnvl if they succeed, because the caller can not
132 * distinguish between the operation failing, and
133 * deserialization failing.
136 #include <sys/types.h>
137 #include <sys/param.h>
138 #include <sys/errno.h>
141 #include <sys/modctl.h>
142 #include <sys/open.h>
143 #include <sys/file.h>
144 #include <sys/kmem.h>
145 #include <sys/conf.h>
146 #include <sys/cmn_err.h>
147 #include <sys/stat.h>
148 #include <sys/zfs_ioctl.h>
149 #include <sys/zfs_vfsops.h>
150 #include <sys/zfs_znode.h>
153 #include <sys/spa_impl.h>
154 #include <sys/vdev.h>
155 #include <sys/priv_impl.h>
157 #include <sys/dsl_dir.h>
158 #include <sys/dsl_dataset.h>
159 #include <sys/dsl_prop.h>
160 #include <sys/dsl_deleg.h>
161 #include <sys/dmu_objset.h>
162 #include <sys/dmu_impl.h>
163 #include <sys/dmu_tx.h>
165 #include <sys/sunddi.h>
166 #include <sys/sunldi.h>
167 #include <sys/policy.h>
168 #include <sys/zone.h>
169 #include <sys/nvpair.h>
170 #include <sys/pathname.h>
171 #include <sys/mount.h>
173 #include <sys/fs/zfs.h>
174 #include <sys/zfs_ctldir.h>
175 #include <sys/zfs_dir.h>
176 #include <sys/zfs_onexit.h>
177 #include <sys/zvol.h>
178 #include <sys/dsl_scan.h>
179 #include <sharefs/share.h>
180 #include <sys/fm/util.h>
182 #include <sys/dmu_send.h>
183 #include <sys/dsl_destroy.h>
184 #include <sys/dsl_bookmark.h>
185 #include <sys/dsl_userhold.h>
186 #include <sys/zfeature.h>
188 #include <linux/miscdevice.h>
190 #include "zfs_namecheck.h"
191 #include "zfs_prop.h"
192 #include "zfs_deleg.h"
193 #include "zfs_comutil.h"
195 kmutex_t zfsdev_state_lock
;
196 zfsdev_state_t
*zfsdev_state_list
;
198 extern void zfs_init(void);
199 extern void zfs_fini(void);
201 uint_t zfs_fsyncer_key
;
202 extern uint_t rrw_tsd_key
;
203 static uint_t zfs_allow_log_key
;
205 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t
*);
206 typedef int zfs_ioc_func_t(const char *, nvlist_t
*, nvlist_t
*);
207 typedef int zfs_secpolicy_func_t(zfs_cmd_t
*, nvlist_t
*, cred_t
*);
213 } zfs_ioc_namecheck_t
;
216 POOL_CHECK_NONE
= 1 << 0,
217 POOL_CHECK_SUSPENDED
= 1 << 1,
218 POOL_CHECK_READONLY
= 1 << 2,
219 } zfs_ioc_poolcheck_t
;
221 typedef struct zfs_ioc_vec
{
222 zfs_ioc_legacy_func_t
*zvec_legacy_func
;
223 zfs_ioc_func_t
*zvec_func
;
224 zfs_secpolicy_func_t
*zvec_secpolicy
;
225 zfs_ioc_namecheck_t zvec_namecheck
;
226 boolean_t zvec_allow_log
;
227 zfs_ioc_poolcheck_t zvec_pool_check
;
228 boolean_t zvec_smush_outnvlist
;
229 const char *zvec_name
;
232 /* This array is indexed by zfs_userquota_prop_t */
233 static const char *userquota_perms
[] = {
234 ZFS_DELEG_PERM_USERUSED
,
235 ZFS_DELEG_PERM_USERQUOTA
,
236 ZFS_DELEG_PERM_GROUPUSED
,
237 ZFS_DELEG_PERM_GROUPQUOTA
,
240 static int zfs_ioc_userspace_upgrade(zfs_cmd_t
*zc
);
241 static int zfs_check_settable(const char *name
, nvpair_t
*property
,
243 static int zfs_check_clearable(char *dataset
, nvlist_t
*props
,
245 static int zfs_fill_zplprops_root(uint64_t, nvlist_t
*, nvlist_t
*,
247 int zfs_set_prop_nvlist(const char *, zprop_source_t
, nvlist_t
*, nvlist_t
*);
248 static int get_nvlist(uint64_t nvl
, uint64_t size
, int iflag
, nvlist_t
**nvp
);
251 history_str_free(char *buf
)
253 kmem_free(buf
, HIS_MAX_RECORD_LEN
);
257 history_str_get(zfs_cmd_t
*zc
)
261 if (zc
->zc_history
== 0)
264 buf
= kmem_alloc(HIS_MAX_RECORD_LEN
, KM_SLEEP
| KM_NODEBUG
);
265 if (copyinstr((void *)(uintptr_t)zc
->zc_history
,
266 buf
, HIS_MAX_RECORD_LEN
, NULL
) != 0) {
267 history_str_free(buf
);
271 buf
[HIS_MAX_RECORD_LEN
-1] = '\0';
277 * Check to see if the named dataset is currently defined as bootable
280 zfs_is_bootfs(const char *name
)
284 if (dmu_objset_hold(name
, FTAG
, &os
) == 0) {
286 ret
= (dmu_objset_id(os
) == spa_bootfs(dmu_objset_spa(os
)));
287 dmu_objset_rele(os
, FTAG
);
294 * Return non-zero if the spa version is less than requested version.
297 zfs_earlier_version(const char *name
, int version
)
301 if (spa_open(name
, &spa
, FTAG
) == 0) {
302 if (spa_version(spa
) < version
) {
303 spa_close(spa
, FTAG
);
306 spa_close(spa
, FTAG
);
312 * Return TRUE if the ZPL version is less than requested version.
315 zpl_earlier_version(const char *name
, int version
)
318 boolean_t rc
= B_TRUE
;
320 if (dmu_objset_hold(name
, FTAG
, &os
) == 0) {
323 if (dmu_objset_type(os
) != DMU_OST_ZFS
) {
324 dmu_objset_rele(os
, FTAG
);
327 /* XXX reading from non-owned objset */
328 if (zfs_get_zplprop(os
, ZFS_PROP_VERSION
, &zplversion
) == 0)
329 rc
= zplversion
< version
;
330 dmu_objset_rele(os
, FTAG
);
336 zfs_log_history(zfs_cmd_t
*zc
)
341 if ((buf
= history_str_get(zc
)) == NULL
)
344 if (spa_open(zc
->zc_name
, &spa
, FTAG
) == 0) {
345 if (spa_version(spa
) >= SPA_VERSION_ZPOOL_HISTORY
)
346 (void) spa_history_log(spa
, buf
);
347 spa_close(spa
, FTAG
);
349 history_str_free(buf
);
353 * Policy for top-level read operations (list pools). Requires no privileges,
354 * and can be used in the local zone, as there is no associated dataset.
358 zfs_secpolicy_none(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
364 * Policy for dataset read operations (list children, get statistics). Requires
365 * no privileges, but must be visible in the local zone.
369 zfs_secpolicy_read(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
371 if (INGLOBALZONE(curproc
) ||
372 zone_dataset_visible(zc
->zc_name
, NULL
))
375 return (SET_ERROR(ENOENT
));
379 zfs_dozonecheck_impl(const char *dataset
, uint64_t zoned
, cred_t
*cr
)
384 * The dataset must be visible by this zone -- check this first
385 * so they don't see EPERM on something they shouldn't know about.
387 if (!INGLOBALZONE(curproc
) &&
388 !zone_dataset_visible(dataset
, &writable
))
389 return (SET_ERROR(ENOENT
));
391 if (INGLOBALZONE(curproc
)) {
393 * If the fs is zoned, only root can access it from the
396 if (secpolicy_zfs(cr
) && zoned
)
397 return (SET_ERROR(EPERM
));
400 * If we are in a local zone, the 'zoned' property must be set.
403 return (SET_ERROR(EPERM
));
405 /* must be writable by this zone */
407 return (SET_ERROR(EPERM
));
413 zfs_dozonecheck(const char *dataset
, cred_t
*cr
)
417 if (dsl_prop_get_integer(dataset
, "zoned", &zoned
, NULL
))
418 return (SET_ERROR(ENOENT
));
420 return (zfs_dozonecheck_impl(dataset
, zoned
, cr
));
424 zfs_dozonecheck_ds(const char *dataset
, dsl_dataset_t
*ds
, cred_t
*cr
)
428 if (dsl_prop_get_int_ds(ds
, "zoned", &zoned
))
429 return (SET_ERROR(ENOENT
));
431 return (zfs_dozonecheck_impl(dataset
, zoned
, cr
));
435 zfs_secpolicy_write_perms_ds(const char *name
, dsl_dataset_t
*ds
,
436 const char *perm
, cred_t
*cr
)
440 error
= zfs_dozonecheck_ds(name
, ds
, cr
);
442 error
= secpolicy_zfs(cr
);
444 error
= dsl_deleg_access_impl(ds
, perm
, cr
);
450 zfs_secpolicy_write_perms(const char *name
, const char *perm
, cred_t
*cr
)
456 error
= dsl_pool_hold(name
, FTAG
, &dp
);
460 error
= dsl_dataset_hold(dp
, name
, FTAG
, &ds
);
462 dsl_pool_rele(dp
, FTAG
);
466 error
= zfs_secpolicy_write_perms_ds(name
, ds
, perm
, cr
);
468 dsl_dataset_rele(ds
, FTAG
);
469 dsl_pool_rele(dp
, FTAG
);
474 * Policy for setting the security label property.
476 * Returns 0 for success, non-zero for access and other errors.
479 zfs_set_slabel_policy(const char *name
, char *strval
, cred_t
*cr
)
482 char ds_hexsl
[MAXNAMELEN
];
483 bslabel_t ds_sl
, new_sl
;
484 boolean_t new_default
= FALSE
;
486 int needed_priv
= -1;
489 /* First get the existing dataset label. */
490 error
= dsl_prop_get(name
, zfs_prop_to_name(ZFS_PROP_MLSLABEL
),
491 1, sizeof (ds_hexsl
), &ds_hexsl
, NULL
);
493 return (SET_ERROR(EPERM
));
495 if (strcasecmp(strval
, ZFS_MLSLABEL_DEFAULT
) == 0)
498 /* The label must be translatable */
499 if (!new_default
&& (hexstr_to_label(strval
, &new_sl
) != 0))
500 return (SET_ERROR(EINVAL
));
503 * In a non-global zone, disallow attempts to set a label that
504 * doesn't match that of the zone; otherwise no other checks
507 if (!INGLOBALZONE(curproc
)) {
508 if (new_default
|| !blequal(&new_sl
, CR_SL(CRED())))
509 return (SET_ERROR(EPERM
));
514 * For global-zone datasets (i.e., those whose zoned property is
515 * "off", verify that the specified new label is valid for the
518 if (dsl_prop_get_integer(name
,
519 zfs_prop_to_name(ZFS_PROP_ZONED
), &zoned
, NULL
))
520 return (SET_ERROR(EPERM
));
522 if (zfs_check_global_label(name
, strval
) != 0)
523 return (SET_ERROR(EPERM
));
527 * If the existing dataset label is nondefault, check if the
528 * dataset is mounted (label cannot be changed while mounted).
529 * Get the zfs_sb_t; if there isn't one, then the dataset isn't
530 * mounted (or isn't a dataset, doesn't exist, ...).
532 if (strcasecmp(ds_hexsl
, ZFS_MLSLABEL_DEFAULT
) != 0) {
534 static char *setsl_tag
= "setsl_tag";
537 * Try to own the dataset; abort if there is any error,
538 * (e.g., already mounted, in use, or other error).
540 error
= dmu_objset_own(name
, DMU_OST_ZFS
, B_TRUE
,
543 return (SET_ERROR(EPERM
));
545 dmu_objset_disown(os
, setsl_tag
);
548 needed_priv
= PRIV_FILE_DOWNGRADE_SL
;
552 if (hexstr_to_label(strval
, &new_sl
) != 0)
553 return (SET_ERROR(EPERM
));
555 if (blstrictdom(&ds_sl
, &new_sl
))
556 needed_priv
= PRIV_FILE_DOWNGRADE_SL
;
557 else if (blstrictdom(&new_sl
, &ds_sl
))
558 needed_priv
= PRIV_FILE_UPGRADE_SL
;
560 /* dataset currently has a default label */
562 needed_priv
= PRIV_FILE_UPGRADE_SL
;
566 if (needed_priv
!= -1)
567 return (PRIV_POLICY(cr
, needed_priv
, B_FALSE
, EPERM
, NULL
));
571 #endif /* HAVE_MLSLABEL */
575 zfs_secpolicy_setprop(const char *dsname
, zfs_prop_t prop
, nvpair_t
*propval
,
581 * Check permissions for special properties.
588 * Disallow setting of 'zoned' from within a local zone.
590 if (!INGLOBALZONE(curproc
))
591 return (SET_ERROR(EPERM
));
595 if (!INGLOBALZONE(curproc
)) {
597 char setpoint
[MAXNAMELEN
];
599 * Unprivileged users are allowed to modify the
600 * quota on things *under* (ie. contained by)
601 * the thing they own.
603 if (dsl_prop_get_integer(dsname
, "zoned", &zoned
,
605 return (SET_ERROR(EPERM
));
606 if (!zoned
|| strlen(dsname
) <= strlen(setpoint
))
607 return (SET_ERROR(EPERM
));
611 case ZFS_PROP_MLSLABEL
:
612 if (!is_system_labeled())
613 return (SET_ERROR(EPERM
));
615 if (nvpair_value_string(propval
, &strval
) == 0) {
618 err
= zfs_set_slabel_policy(dsname
, strval
, CRED());
625 return (zfs_secpolicy_write_perms(dsname
, zfs_prop_to_name(prop
), cr
));
630 zfs_secpolicy_set_fsacl(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
634 error
= zfs_dozonecheck(zc
->zc_name
, cr
);
639 * permission to set permissions will be evaluated later in
640 * dsl_deleg_can_allow()
647 zfs_secpolicy_rollback(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
649 return (zfs_secpolicy_write_perms(zc
->zc_name
,
650 ZFS_DELEG_PERM_ROLLBACK
, cr
));
655 zfs_secpolicy_send(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
663 * Generate the current snapshot name from the given objsetid, then
664 * use that name for the secpolicy/zone checks.
666 cp
= strchr(zc
->zc_name
, '@');
668 return (SET_ERROR(EINVAL
));
669 error
= dsl_pool_hold(zc
->zc_name
, FTAG
, &dp
);
673 error
= dsl_dataset_hold_obj(dp
, zc
->zc_sendobj
, FTAG
, &ds
);
675 dsl_pool_rele(dp
, FTAG
);
679 dsl_dataset_name(ds
, zc
->zc_name
);
681 error
= zfs_secpolicy_write_perms_ds(zc
->zc_name
, ds
,
682 ZFS_DELEG_PERM_SEND
, cr
);
683 dsl_dataset_rele(ds
, FTAG
);
684 dsl_pool_rele(dp
, FTAG
);
691 zfs_secpolicy_send_new(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
693 return (zfs_secpolicy_write_perms(zc
->zc_name
,
694 ZFS_DELEG_PERM_SEND
, cr
));
697 #ifdef HAVE_SMB_SHARE
700 zfs_secpolicy_deleg_share(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
705 if ((error
= lookupname(zc
->zc_value
, UIO_SYSSPACE
,
706 NO_FOLLOW
, NULL
, &vp
)) != 0)
709 /* Now make sure mntpnt and dataset are ZFS */
711 if (vp
->v_vfsp
->vfs_fstype
!= zfsfstype
||
712 (strcmp((char *)refstr_value(vp
->v_vfsp
->vfs_resource
),
713 zc
->zc_name
) != 0)) {
715 return (SET_ERROR(EPERM
));
719 return (dsl_deleg_access(zc
->zc_name
,
720 ZFS_DELEG_PERM_SHARE
, cr
));
722 #endif /* HAVE_SMB_SHARE */
725 zfs_secpolicy_share(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
727 #ifdef HAVE_SMB_SHARE
728 if (!INGLOBALZONE(curproc
))
729 return (SET_ERROR(EPERM
));
731 if (secpolicy_nfs(cr
) == 0) {
734 return (zfs_secpolicy_deleg_share(zc
, innvl
, cr
));
737 return (SET_ERROR(ENOTSUP
));
738 #endif /* HAVE_SMB_SHARE */
742 zfs_secpolicy_smb_acl(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
744 #ifdef HAVE_SMB_SHARE
745 if (!INGLOBALZONE(curproc
))
746 return (SET_ERROR(EPERM
));
748 if (secpolicy_smb(cr
) == 0) {
751 return (zfs_secpolicy_deleg_share(zc
, innvl
, cr
));
754 return (SET_ERROR(ENOTSUP
));
755 #endif /* HAVE_SMB_SHARE */
759 zfs_get_parent(const char *datasetname
, char *parent
, int parentsize
)
764 * Remove the @bla or /bla from the end of the name to get the parent.
766 (void) strncpy(parent
, datasetname
, parentsize
);
767 cp
= strrchr(parent
, '@');
771 cp
= strrchr(parent
, '/');
773 return (SET_ERROR(ENOENT
));
781 zfs_secpolicy_destroy_perms(const char *name
, cred_t
*cr
)
785 if ((error
= zfs_secpolicy_write_perms(name
,
786 ZFS_DELEG_PERM_MOUNT
, cr
)) != 0)
789 return (zfs_secpolicy_write_perms(name
, ZFS_DELEG_PERM_DESTROY
, cr
));
794 zfs_secpolicy_destroy(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
796 return (zfs_secpolicy_destroy_perms(zc
->zc_name
, cr
));
800 * Destroying snapshots with delegated permissions requires
801 * descendant mount and destroy permissions.
805 zfs_secpolicy_destroy_snaps(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
808 nvpair_t
*pair
, *nextpair
;
811 if (nvlist_lookup_nvlist(innvl
, "snaps", &snaps
) != 0)
812 return (SET_ERROR(EINVAL
));
813 for (pair
= nvlist_next_nvpair(snaps
, NULL
); pair
!= NULL
;
815 nextpair
= nvlist_next_nvpair(snaps
, pair
);
816 error
= zfs_secpolicy_destroy_perms(nvpair_name(pair
), cr
);
817 if (error
== ENOENT
) {
819 * Ignore any snapshots that don't exist (we consider
820 * them "already destroyed"). Remove the name from the
821 * nvl here in case the snapshot is created between
822 * now and when we try to destroy it (in which case
823 * we don't want to destroy it since we haven't
824 * checked for permission).
826 fnvlist_remove_nvpair(snaps
, pair
);
837 zfs_secpolicy_rename_perms(const char *from
, const char *to
, cred_t
*cr
)
839 char parentname
[MAXNAMELEN
];
842 if ((error
= zfs_secpolicy_write_perms(from
,
843 ZFS_DELEG_PERM_RENAME
, cr
)) != 0)
846 if ((error
= zfs_secpolicy_write_perms(from
,
847 ZFS_DELEG_PERM_MOUNT
, cr
)) != 0)
850 if ((error
= zfs_get_parent(to
, parentname
,
851 sizeof (parentname
))) != 0)
854 if ((error
= zfs_secpolicy_write_perms(parentname
,
855 ZFS_DELEG_PERM_CREATE
, cr
)) != 0)
858 if ((error
= zfs_secpolicy_write_perms(parentname
,
859 ZFS_DELEG_PERM_MOUNT
, cr
)) != 0)
867 zfs_secpolicy_rename(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
869 return (zfs_secpolicy_rename_perms(zc
->zc_name
, zc
->zc_value
, cr
));
874 zfs_secpolicy_promote(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
877 dsl_dataset_t
*clone
;
880 error
= zfs_secpolicy_write_perms(zc
->zc_name
,
881 ZFS_DELEG_PERM_PROMOTE
, cr
);
885 error
= dsl_pool_hold(zc
->zc_name
, FTAG
, &dp
);
889 error
= dsl_dataset_hold(dp
, zc
->zc_name
, FTAG
, &clone
);
892 char parentname
[MAXNAMELEN
];
893 dsl_dataset_t
*origin
= NULL
;
897 error
= dsl_dataset_hold_obj(dd
->dd_pool
,
898 dd
->dd_phys
->dd_origin_obj
, FTAG
, &origin
);
900 dsl_dataset_rele(clone
, FTAG
);
901 dsl_pool_rele(dp
, FTAG
);
905 error
= zfs_secpolicy_write_perms_ds(zc
->zc_name
, clone
,
906 ZFS_DELEG_PERM_MOUNT
, cr
);
908 dsl_dataset_name(origin
, parentname
);
910 error
= zfs_secpolicy_write_perms_ds(parentname
, origin
,
911 ZFS_DELEG_PERM_PROMOTE
, cr
);
913 dsl_dataset_rele(clone
, FTAG
);
914 dsl_dataset_rele(origin
, FTAG
);
916 dsl_pool_rele(dp
, FTAG
);
922 zfs_secpolicy_recv(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
926 if ((error
= zfs_secpolicy_write_perms(zc
->zc_name
,
927 ZFS_DELEG_PERM_RECEIVE
, cr
)) != 0)
930 if ((error
= zfs_secpolicy_write_perms(zc
->zc_name
,
931 ZFS_DELEG_PERM_MOUNT
, cr
)) != 0)
934 return (zfs_secpolicy_write_perms(zc
->zc_name
,
935 ZFS_DELEG_PERM_CREATE
, cr
));
939 zfs_secpolicy_snapshot_perms(const char *name
, cred_t
*cr
)
941 return (zfs_secpolicy_write_perms(name
,
942 ZFS_DELEG_PERM_SNAPSHOT
, cr
));
946 * Check for permission to create each snapshot in the nvlist.
950 zfs_secpolicy_snapshot(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
956 if (nvlist_lookup_nvlist(innvl
, "snaps", &snaps
) != 0)
957 return (SET_ERROR(EINVAL
));
958 for (pair
= nvlist_next_nvpair(snaps
, NULL
); pair
!= NULL
;
959 pair
= nvlist_next_nvpair(snaps
, pair
)) {
960 char *name
= nvpair_name(pair
);
961 char *atp
= strchr(name
, '@');
964 error
= SET_ERROR(EINVAL
);
968 error
= zfs_secpolicy_snapshot_perms(name
, cr
);
977 * Check for permission to create each snapshot in the nvlist.
981 zfs_secpolicy_bookmark(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
986 for (pair
= nvlist_next_nvpair(innvl
, NULL
);
987 pair
!= NULL
; pair
= nvlist_next_nvpair(innvl
, pair
)) {
988 char *name
= nvpair_name(pair
);
989 char *hashp
= strchr(name
, '#');
992 error
= SET_ERROR(EINVAL
);
996 error
= zfs_secpolicy_write_perms(name
,
997 ZFS_DELEG_PERM_BOOKMARK
, cr
);
1007 zfs_secpolicy_destroy_bookmarks(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1009 nvpair_t
*pair
, *nextpair
;
1012 for (pair
= nvlist_next_nvpair(innvl
, NULL
); pair
!= NULL
;
1014 char *name
= nvpair_name(pair
);
1015 char *hashp
= strchr(name
, '#');
1016 nextpair
= nvlist_next_nvpair(innvl
, pair
);
1018 if (hashp
== NULL
) {
1019 error
= SET_ERROR(EINVAL
);
1024 error
= zfs_secpolicy_write_perms(name
,
1025 ZFS_DELEG_PERM_DESTROY
, cr
);
1027 if (error
== ENOENT
) {
1029 * Ignore any filesystems that don't exist (we consider
1030 * their bookmarks "already destroyed"). Remove
1031 * the name from the nvl here in case the filesystem
1032 * is created between now and when we try to destroy
1033 * the bookmark (in which case we don't want to
1034 * destroy it since we haven't checked for permission).
1036 fnvlist_remove_nvpair(innvl
, pair
);
1048 zfs_secpolicy_log_history(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1051 * Even root must have a proper TSD so that we know what pool
1054 if (tsd_get(zfs_allow_log_key
) == NULL
)
1055 return (SET_ERROR(EPERM
));
1060 zfs_secpolicy_create_clone(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1062 char parentname
[MAXNAMELEN
];
1066 if ((error
= zfs_get_parent(zc
->zc_name
, parentname
,
1067 sizeof (parentname
))) != 0)
1070 if (nvlist_lookup_string(innvl
, "origin", &origin
) == 0 &&
1071 (error
= zfs_secpolicy_write_perms(origin
,
1072 ZFS_DELEG_PERM_CLONE
, cr
)) != 0)
1075 if ((error
= zfs_secpolicy_write_perms(parentname
,
1076 ZFS_DELEG_PERM_CREATE
, cr
)) != 0)
1079 return (zfs_secpolicy_write_perms(parentname
,
1080 ZFS_DELEG_PERM_MOUNT
, cr
));
1084 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires
1085 * SYS_CONFIG privilege, which is not available in a local zone.
1089 zfs_secpolicy_config(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1091 if (secpolicy_sys_config(cr
, B_FALSE
) != 0)
1092 return (SET_ERROR(EPERM
));
1098 * Policy for object to name lookups.
1102 zfs_secpolicy_diff(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1106 if ((error
= secpolicy_sys_config(cr
, B_FALSE
)) == 0)
1109 error
= zfs_secpolicy_write_perms(zc
->zc_name
, ZFS_DELEG_PERM_DIFF
, cr
);
1114 * Policy for fault injection. Requires all privileges.
1118 zfs_secpolicy_inject(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1120 return (secpolicy_zinject(cr
));
1125 zfs_secpolicy_inherit_prop(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1127 zfs_prop_t prop
= zfs_name_to_prop(zc
->zc_value
);
1129 if (prop
== ZPROP_INVAL
) {
1130 if (!zfs_prop_user(zc
->zc_value
))
1131 return (SET_ERROR(EINVAL
));
1132 return (zfs_secpolicy_write_perms(zc
->zc_name
,
1133 ZFS_DELEG_PERM_USERPROP
, cr
));
1135 return (zfs_secpolicy_setprop(zc
->zc_name
, prop
,
1141 zfs_secpolicy_userspace_one(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1143 int err
= zfs_secpolicy_read(zc
, innvl
, cr
);
1147 if (zc
->zc_objset_type
>= ZFS_NUM_USERQUOTA_PROPS
)
1148 return (SET_ERROR(EINVAL
));
1150 if (zc
->zc_value
[0] == 0) {
1152 * They are asking about a posix uid/gid. If it's
1153 * themself, allow it.
1155 if (zc
->zc_objset_type
== ZFS_PROP_USERUSED
||
1156 zc
->zc_objset_type
== ZFS_PROP_USERQUOTA
) {
1157 if (zc
->zc_guid
== crgetuid(cr
))
1160 if (groupmember(zc
->zc_guid
, cr
))
1165 return (zfs_secpolicy_write_perms(zc
->zc_name
,
1166 userquota_perms
[zc
->zc_objset_type
], cr
));
1170 zfs_secpolicy_userspace_many(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1172 int err
= zfs_secpolicy_read(zc
, innvl
, cr
);
1176 if (zc
->zc_objset_type
>= ZFS_NUM_USERQUOTA_PROPS
)
1177 return (SET_ERROR(EINVAL
));
1179 return (zfs_secpolicy_write_perms(zc
->zc_name
,
1180 userquota_perms
[zc
->zc_objset_type
], cr
));
1185 zfs_secpolicy_userspace_upgrade(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1187 return (zfs_secpolicy_setprop(zc
->zc_name
, ZFS_PROP_VERSION
,
1193 zfs_secpolicy_hold(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1199 error
= nvlist_lookup_nvlist(innvl
, "holds", &holds
);
1201 return (SET_ERROR(EINVAL
));
1203 for (pair
= nvlist_next_nvpair(holds
, NULL
); pair
!= NULL
;
1204 pair
= nvlist_next_nvpair(holds
, pair
)) {
1205 char fsname
[MAXNAMELEN
];
1206 error
= dmu_fsname(nvpair_name(pair
), fsname
);
1209 error
= zfs_secpolicy_write_perms(fsname
,
1210 ZFS_DELEG_PERM_HOLD
, cr
);
1219 zfs_secpolicy_release(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1224 for (pair
= nvlist_next_nvpair(innvl
, NULL
); pair
!= NULL
;
1225 pair
= nvlist_next_nvpair(innvl
, pair
)) {
1226 char fsname
[MAXNAMELEN
];
1227 error
= dmu_fsname(nvpair_name(pair
), fsname
);
1230 error
= zfs_secpolicy_write_perms(fsname
,
1231 ZFS_DELEG_PERM_RELEASE
, cr
);
1239 * Policy for allowing temporary snapshots to be taken or released
1242 zfs_secpolicy_tmp_snapshot(zfs_cmd_t
*zc
, nvlist_t
*innvl
, cred_t
*cr
)
1245 * A temporary snapshot is the same as a snapshot,
1246 * hold, destroy and release all rolled into one.
1247 * Delegated diff alone is sufficient that we allow this.
1251 if ((error
= zfs_secpolicy_write_perms(zc
->zc_name
,
1252 ZFS_DELEG_PERM_DIFF
, cr
)) == 0)
1255 error
= zfs_secpolicy_snapshot_perms(zc
->zc_name
, cr
);
1257 error
= zfs_secpolicy_hold(zc
, innvl
, cr
);
1259 error
= zfs_secpolicy_release(zc
, innvl
, cr
);
1261 error
= zfs_secpolicy_destroy(zc
, innvl
, cr
);
1266 * Returns the nvlist as specified by the user in the zfs_cmd_t.
1269 get_nvlist(uint64_t nvl
, uint64_t size
, int iflag
, nvlist_t
**nvp
)
1273 nvlist_t
*list
= NULL
;
1276 * Read in and unpack the user-supplied nvlist.
1279 return (SET_ERROR(EINVAL
));
1281 packed
= kmem_alloc(size
, KM_SLEEP
| KM_NODEBUG
);
1283 if ((error
= ddi_copyin((void *)(uintptr_t)nvl
, packed
, size
,
1285 kmem_free(packed
, size
);
1289 if ((error
= nvlist_unpack(packed
, size
, &list
, 0)) != 0) {
1290 kmem_free(packed
, size
);
1294 kmem_free(packed
, size
);
1301 * Reduce the size of this nvlist until it can be serialized in 'max' bytes.
1302 * Entries will be removed from the end of the nvlist, and one int32 entry
1303 * named "N_MORE_ERRORS" will be added indicating how many entries were
1307 nvlist_smush(nvlist_t
*errors
, size_t max
)
1311 size
= fnvlist_size(errors
);
1314 nvpair_t
*more_errors
;
1318 return (SET_ERROR(ENOMEM
));
1320 fnvlist_add_int32(errors
, ZPROP_N_MORE_ERRORS
, 0);
1321 more_errors
= nvlist_prev_nvpair(errors
, NULL
);
1324 nvpair_t
*pair
= nvlist_prev_nvpair(errors
,
1326 fnvlist_remove_nvpair(errors
, pair
);
1328 size
= fnvlist_size(errors
);
1329 } while (size
> max
);
1331 fnvlist_remove_nvpair(errors
, more_errors
);
1332 fnvlist_add_int32(errors
, ZPROP_N_MORE_ERRORS
, n
);
1333 ASSERT3U(fnvlist_size(errors
), <=, max
);
1340 put_nvlist(zfs_cmd_t
*zc
, nvlist_t
*nvl
)
1342 char *packed
= NULL
;
1346 size
= fnvlist_size(nvl
);
1348 if (size
> zc
->zc_nvlist_dst_size
) {
1349 error
= SET_ERROR(ENOMEM
);
1351 packed
= fnvlist_pack(nvl
, &size
);
1352 if (ddi_copyout(packed
, (void *)(uintptr_t)zc
->zc_nvlist_dst
,
1353 size
, zc
->zc_iflags
) != 0)
1354 error
= SET_ERROR(EFAULT
);
1355 fnvlist_pack_free(packed
, size
);
1358 zc
->zc_nvlist_dst_size
= size
;
1359 zc
->zc_nvlist_dst_filled
= B_TRUE
;
1364 get_zfs_sb(const char *dsname
, zfs_sb_t
**zsbp
)
1369 error
= dmu_objset_hold(dsname
, FTAG
, &os
);
1372 if (dmu_objset_type(os
) != DMU_OST_ZFS
) {
1373 dmu_objset_rele(os
, FTAG
);
1374 return (SET_ERROR(EINVAL
));
1377 mutex_enter(&os
->os_user_ptr_lock
);
1378 *zsbp
= dmu_objset_get_user(os
);
1379 if (*zsbp
&& (*zsbp
)->z_sb
) {
1380 atomic_inc(&((*zsbp
)->z_sb
->s_active
));
1382 error
= SET_ERROR(ESRCH
);
1384 mutex_exit(&os
->os_user_ptr_lock
);
1385 dmu_objset_rele(os
, FTAG
);
1390 * Find a zfs_sb_t for a mounted filesystem, or create our own, in which
1391 * case its z_sb will be NULL, and it will be opened as the owner.
1392 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER,
1393 * which prevents all inode ops from running.
1396 zfs_sb_hold(const char *name
, void *tag
, zfs_sb_t
**zsbp
, boolean_t writer
)
1400 if (get_zfs_sb(name
, zsbp
) != 0)
1401 error
= zfs_sb_create(name
, zsbp
);
1403 rrw_enter(&(*zsbp
)->z_teardown_lock
, (writer
) ? RW_WRITER
:
1405 if ((*zsbp
)->z_unmounted
) {
1407 * XXX we could probably try again, since the unmounting
1408 * thread should be just about to disassociate the
1409 * objset from the zsb.
1411 rrw_exit(&(*zsbp
)->z_teardown_lock
, tag
);
1412 return (SET_ERROR(EBUSY
));
1419 zfs_sb_rele(zfs_sb_t
*zsb
, void *tag
)
1421 rrw_exit(&zsb
->z_teardown_lock
, tag
);
1424 deactivate_super(zsb
->z_sb
);
1426 dmu_objset_disown(zsb
->z_os
, zsb
);
1432 zfs_ioc_pool_create(zfs_cmd_t
*zc
)
1435 nvlist_t
*config
, *props
= NULL
;
1436 nvlist_t
*rootprops
= NULL
;
1437 nvlist_t
*zplprops
= NULL
;
1439 if ((error
= get_nvlist(zc
->zc_nvlist_conf
, zc
->zc_nvlist_conf_size
,
1440 zc
->zc_iflags
, &config
)))
1443 if (zc
->zc_nvlist_src_size
!= 0 && (error
=
1444 get_nvlist(zc
->zc_nvlist_src
, zc
->zc_nvlist_src_size
,
1445 zc
->zc_iflags
, &props
))) {
1446 nvlist_free(config
);
1451 nvlist_t
*nvl
= NULL
;
1452 uint64_t version
= SPA_VERSION
;
1454 (void) nvlist_lookup_uint64(props
,
1455 zpool_prop_to_name(ZPOOL_PROP_VERSION
), &version
);
1456 if (!SPA_VERSION_IS_SUPPORTED(version
)) {
1457 error
= SET_ERROR(EINVAL
);
1458 goto pool_props_bad
;
1460 (void) nvlist_lookup_nvlist(props
, ZPOOL_ROOTFS_PROPS
, &nvl
);
1462 error
= nvlist_dup(nvl
, &rootprops
, KM_SLEEP
);
1464 nvlist_free(config
);
1468 (void) nvlist_remove_all(props
, ZPOOL_ROOTFS_PROPS
);
1470 VERIFY(nvlist_alloc(&zplprops
, NV_UNIQUE_NAME
, KM_SLEEP
) == 0);
1471 error
= zfs_fill_zplprops_root(version
, rootprops
,
1474 goto pool_props_bad
;
1477 error
= spa_create(zc
->zc_name
, config
, props
, zplprops
);
1480 * Set the remaining root properties
1482 if (!error
&& (error
= zfs_set_prop_nvlist(zc
->zc_name
,
1483 ZPROP_SRC_LOCAL
, rootprops
, NULL
)) != 0)
1484 (void) spa_destroy(zc
->zc_name
);
1487 nvlist_free(rootprops
);
1488 nvlist_free(zplprops
);
1489 nvlist_free(config
);
1496 zfs_ioc_pool_destroy(zfs_cmd_t
*zc
)
1499 zfs_log_history(zc
);
1500 error
= spa_destroy(zc
->zc_name
);
1502 zvol_remove_minors(zc
->zc_name
);
1507 zfs_ioc_pool_import(zfs_cmd_t
*zc
)
1509 nvlist_t
*config
, *props
= NULL
;
1513 if ((error
= get_nvlist(zc
->zc_nvlist_conf
, zc
->zc_nvlist_conf_size
,
1514 zc
->zc_iflags
, &config
)) != 0)
1517 if (zc
->zc_nvlist_src_size
!= 0 && (error
=
1518 get_nvlist(zc
->zc_nvlist_src
, zc
->zc_nvlist_src_size
,
1519 zc
->zc_iflags
, &props
))) {
1520 nvlist_free(config
);
1524 if (nvlist_lookup_uint64(config
, ZPOOL_CONFIG_POOL_GUID
, &guid
) != 0 ||
1525 guid
!= zc
->zc_guid
)
1526 error
= SET_ERROR(EINVAL
);
1528 error
= spa_import(zc
->zc_name
, config
, props
, zc
->zc_cookie
);
1530 if (zc
->zc_nvlist_dst
!= 0) {
1533 if ((err
= put_nvlist(zc
, config
)) != 0)
1537 nvlist_free(config
);
1546 zfs_ioc_pool_export(zfs_cmd_t
*zc
)
1549 boolean_t force
= (boolean_t
)zc
->zc_cookie
;
1550 boolean_t hardforce
= (boolean_t
)zc
->zc_guid
;
1552 zfs_log_history(zc
);
1553 error
= spa_export(zc
->zc_name
, NULL
, force
, hardforce
);
1555 zvol_remove_minors(zc
->zc_name
);
1560 zfs_ioc_pool_configs(zfs_cmd_t
*zc
)
1565 if ((configs
= spa_all_configs(&zc
->zc_cookie
)) == NULL
)
1566 return (SET_ERROR(EEXIST
));
1568 error
= put_nvlist(zc
, configs
);
1570 nvlist_free(configs
);
1577 * zc_name name of the pool
1580 * zc_cookie real errno
1581 * zc_nvlist_dst config nvlist
1582 * zc_nvlist_dst_size size of config nvlist
1585 zfs_ioc_pool_stats(zfs_cmd_t
*zc
)
1591 error
= spa_get_stats(zc
->zc_name
, &config
, zc
->zc_value
,
1592 sizeof (zc
->zc_value
));
1594 if (config
!= NULL
) {
1595 ret
= put_nvlist(zc
, config
);
1596 nvlist_free(config
);
1599 * The config may be present even if 'error' is non-zero.
1600 * In this case we return success, and preserve the real errno
1603 zc
->zc_cookie
= error
;
1612 * Try to import the given pool, returning pool stats as appropriate so that
1613 * user land knows which devices are available and overall pool health.
1616 zfs_ioc_pool_tryimport(zfs_cmd_t
*zc
)
1618 nvlist_t
*tryconfig
, *config
;
1621 if ((error
= get_nvlist(zc
->zc_nvlist_conf
, zc
->zc_nvlist_conf_size
,
1622 zc
->zc_iflags
, &tryconfig
)) != 0)
1625 config
= spa_tryimport(tryconfig
);
1627 nvlist_free(tryconfig
);
1630 return (SET_ERROR(EINVAL
));
1632 error
= put_nvlist(zc
, config
);
1633 nvlist_free(config
);
1640 * zc_name name of the pool
1641 * zc_cookie scan func (pool_scan_func_t)
1644 zfs_ioc_pool_scan(zfs_cmd_t
*zc
)
1649 if ((error
= spa_open(zc
->zc_name
, &spa
, FTAG
)) != 0)
1652 if (zc
->zc_cookie
== POOL_SCAN_NONE
)
1653 error
= spa_scan_stop(spa
);
1655 error
= spa_scan(spa
, zc
->zc_cookie
);
1657 spa_close(spa
, FTAG
);
1663 zfs_ioc_pool_freeze(zfs_cmd_t
*zc
)
1668 error
= spa_open(zc
->zc_name
, &spa
, FTAG
);
1671 spa_close(spa
, FTAG
);
1677 zfs_ioc_pool_upgrade(zfs_cmd_t
*zc
)
1682 if ((error
= spa_open(zc
->zc_name
, &spa
, FTAG
)) != 0)
1685 if (zc
->zc_cookie
< spa_version(spa
) ||
1686 !SPA_VERSION_IS_SUPPORTED(zc
->zc_cookie
)) {
1687 spa_close(spa
, FTAG
);
1688 return (SET_ERROR(EINVAL
));
1691 spa_upgrade(spa
, zc
->zc_cookie
);
1692 spa_close(spa
, FTAG
);
1698 zfs_ioc_pool_get_history(zfs_cmd_t
*zc
)
1705 if ((size
= zc
->zc_history_len
) == 0)
1706 return (SET_ERROR(EINVAL
));
1708 if ((error
= spa_open(zc
->zc_name
, &spa
, FTAG
)) != 0)
1711 if (spa_version(spa
) < SPA_VERSION_ZPOOL_HISTORY
) {
1712 spa_close(spa
, FTAG
);
1713 return (SET_ERROR(ENOTSUP
));
1716 hist_buf
= vmem_alloc(size
, KM_SLEEP
);
1717 if ((error
= spa_history_get(spa
, &zc
->zc_history_offset
,
1718 &zc
->zc_history_len
, hist_buf
)) == 0) {
1719 error
= ddi_copyout(hist_buf
,
1720 (void *)(uintptr_t)zc
->zc_history
,
1721 zc
->zc_history_len
, zc
->zc_iflags
);
1724 spa_close(spa
, FTAG
);
1725 vmem_free(hist_buf
, size
);
1730 zfs_ioc_pool_reguid(zfs_cmd_t
*zc
)
1735 error
= spa_open(zc
->zc_name
, &spa
, FTAG
);
1737 error
= spa_change_guid(spa
);
1738 spa_close(spa
, FTAG
);
1744 zfs_ioc_dsobj_to_dsname(zfs_cmd_t
*zc
)
1746 return (dsl_dsobj_to_dsname(zc
->zc_name
, zc
->zc_obj
, zc
->zc_value
));
1751 * zc_name name of filesystem
1752 * zc_obj object to find
1755 * zc_value name of object
1758 zfs_ioc_obj_to_path(zfs_cmd_t
*zc
)
1763 /* XXX reading from objset not owned */
1764 if ((error
= dmu_objset_hold(zc
->zc_name
, FTAG
, &os
)) != 0)
1766 if (dmu_objset_type(os
) != DMU_OST_ZFS
) {
1767 dmu_objset_rele(os
, FTAG
);
1768 return (SET_ERROR(EINVAL
));
1770 error
= zfs_obj_to_path(os
, zc
->zc_obj
, zc
->zc_value
,
1771 sizeof (zc
->zc_value
));
1772 dmu_objset_rele(os
, FTAG
);
1779 * zc_name name of filesystem
1780 * zc_obj object to find
1783 * zc_stat stats on object
1784 * zc_value path to object
1787 zfs_ioc_obj_to_stats(zfs_cmd_t
*zc
)
1792 /* XXX reading from objset not owned */
1793 if ((error
= dmu_objset_hold(zc
->zc_name
, FTAG
, &os
)) != 0)
1795 if (dmu_objset_type(os
) != DMU_OST_ZFS
) {
1796 dmu_objset_rele(os
, FTAG
);
1797 return (SET_ERROR(EINVAL
));
1799 error
= zfs_obj_to_stats(os
, zc
->zc_obj
, &zc
->zc_stat
, zc
->zc_value
,
1800 sizeof (zc
->zc_value
));
1801 dmu_objset_rele(os
, FTAG
);
1807 zfs_ioc_vdev_add(zfs_cmd_t
*zc
)
1813 error
= spa_open(zc
->zc_name
, &spa
, FTAG
);
1817 error
= get_nvlist(zc
->zc_nvlist_conf
, zc
->zc_nvlist_conf_size
,
1818 zc
->zc_iflags
, &config
);
1820 error
= spa_vdev_add(spa
, config
);
1821 nvlist_free(config
);
1823 spa_close(spa
, FTAG
);
1829 * zc_name name of the pool
1830 * zc_nvlist_conf nvlist of devices to remove
1831 * zc_cookie to stop the remove?
1834 zfs_ioc_vdev_remove(zfs_cmd_t
*zc
)
1839 error
= spa_open(zc
->zc_name
, &spa
, FTAG
);
1842 error
= spa_vdev_remove(spa
, zc
->zc_guid
, B_FALSE
);
1843 spa_close(spa
, FTAG
);
1848 zfs_ioc_vdev_set_state(zfs_cmd_t
*zc
)
1852 vdev_state_t newstate
= VDEV_STATE_UNKNOWN
;
1854 if ((error
= spa_open(zc
->zc_name
, &spa
, FTAG
)) != 0)
1856 switch (zc
->zc_cookie
) {
1857 case VDEV_STATE_ONLINE
:
1858 error
= vdev_online(spa
, zc
->zc_guid
, zc
->zc_obj
, &newstate
);
1861 case VDEV_STATE_OFFLINE
:
1862 error
= vdev_offline(spa
, zc
->zc_guid
, zc
->zc_obj
);
1865 case VDEV_STATE_FAULTED
:
1866 if (zc
->zc_obj
!= VDEV_AUX_ERR_EXCEEDED
&&
1867 zc
->zc_obj
!= VDEV_AUX_EXTERNAL
)
1868 zc
->zc_obj
= VDEV_AUX_ERR_EXCEEDED
;
1870 error
= vdev_fault(spa
, zc
->zc_guid
, zc
->zc_obj
);
1873 case VDEV_STATE_DEGRADED
:
1874 if (zc
->zc_obj
!= VDEV_AUX_ERR_EXCEEDED
&&
1875 zc
->zc_obj
!= VDEV_AUX_EXTERNAL
)
1876 zc
->zc_obj
= VDEV_AUX_ERR_EXCEEDED
;
1878 error
= vdev_degrade(spa
, zc
->zc_guid
, zc
->zc_obj
);
1882 error
= SET_ERROR(EINVAL
);
1884 zc
->zc_cookie
= newstate
;
1885 spa_close(spa
, FTAG
);
1890 zfs_ioc_vdev_attach(zfs_cmd_t
*zc
)
1893 int replacing
= zc
->zc_cookie
;
1897 if ((error
= spa_open(zc
->zc_name
, &spa
, FTAG
)) != 0)
1900 if ((error
= get_nvlist(zc
->zc_nvlist_conf
, zc
->zc_nvlist_conf_size
,
1901 zc
->zc_iflags
, &config
)) == 0) {
1902 error
= spa_vdev_attach(spa
, zc
->zc_guid
, config
, replacing
);
1903 nvlist_free(config
);
1906 spa_close(spa
, FTAG
);
1911 zfs_ioc_vdev_detach(zfs_cmd_t
*zc
)
1916 if ((error
= spa_open(zc
->zc_name
, &spa
, FTAG
)) != 0)
1919 error
= spa_vdev_detach(spa
, zc
->zc_guid
, 0, B_FALSE
);
1921 spa_close(spa
, FTAG
);
1926 zfs_ioc_vdev_split(zfs_cmd_t
*zc
)
1929 nvlist_t
*config
, *props
= NULL
;
1931 boolean_t exp
= !!(zc
->zc_cookie
& ZPOOL_EXPORT_AFTER_SPLIT
);
1933 if ((error
= spa_open(zc
->zc_name
, &spa
, FTAG
)) != 0)
1936 if ((error
= get_nvlist(zc
->zc_nvlist_conf
, zc
->zc_nvlist_conf_size
,
1937 zc
->zc_iflags
, &config
))) {
1938 spa_close(spa
, FTAG
);
1942 if (zc
->zc_nvlist_src_size
!= 0 && (error
=
1943 get_nvlist(zc
->zc_nvlist_src
, zc
->zc_nvlist_src_size
,
1944 zc
->zc_iflags
, &props
))) {
1945 spa_close(spa
, FTAG
);
1946 nvlist_free(config
);
1950 error
= spa_vdev_split_mirror(spa
, zc
->zc_string
, config
, props
, exp
);
1952 spa_close(spa
, FTAG
);
1954 nvlist_free(config
);
1961 zfs_ioc_vdev_setpath(zfs_cmd_t
*zc
)
1964 char *path
= zc
->zc_value
;
1965 uint64_t guid
= zc
->zc_guid
;
1968 error
= spa_open(zc
->zc_name
, &spa
, FTAG
);
1972 error
= spa_vdev_setpath(spa
, guid
, path
);
1973 spa_close(spa
, FTAG
);
1978 zfs_ioc_vdev_setfru(zfs_cmd_t
*zc
)
1981 char *fru
= zc
->zc_value
;
1982 uint64_t guid
= zc
->zc_guid
;
1985 error
= spa_open(zc
->zc_name
, &spa
, FTAG
);
1989 error
= spa_vdev_setfru(spa
, guid
, fru
);
1990 spa_close(spa
, FTAG
);
1995 zfs_ioc_objset_stats_impl(zfs_cmd_t
*zc
, objset_t
*os
)
2000 dmu_objset_fast_stat(os
, &zc
->zc_objset_stats
);
2002 if (zc
->zc_nvlist_dst
!= 0 &&
2003 (error
= dsl_prop_get_all(os
, &nv
)) == 0) {
2004 dmu_objset_stats(os
, nv
);
2006 * NB: zvol_get_stats() will read the objset contents,
2007 * which we aren't supposed to do with a
2008 * DS_MODE_USER hold, because it could be
2009 * inconsistent. So this is a bit of a workaround...
2010 * XXX reading with out owning
2012 if (!zc
->zc_objset_stats
.dds_inconsistent
&&
2013 dmu_objset_type(os
) == DMU_OST_ZVOL
) {
2014 error
= zvol_get_stats(os
, nv
);
2020 error
= put_nvlist(zc
, nv
);
2029 * zc_name name of filesystem
2030 * zc_nvlist_dst_size size of buffer for property nvlist
2033 * zc_objset_stats stats
2034 * zc_nvlist_dst property nvlist
2035 * zc_nvlist_dst_size size of property nvlist
2038 zfs_ioc_objset_stats(zfs_cmd_t
*zc
)
2043 error
= dmu_objset_hold(zc
->zc_name
, FTAG
, &os
);
2045 error
= zfs_ioc_objset_stats_impl(zc
, os
);
2046 dmu_objset_rele(os
, FTAG
);
2054 * zc_name name of filesystem
2055 * zc_nvlist_dst_size size of buffer for property nvlist
2058 * zc_nvlist_dst received property nvlist
2059 * zc_nvlist_dst_size size of received property nvlist
2061 * Gets received properties (distinct from local properties on or after
2062 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from
2063 * local property values.
2066 zfs_ioc_objset_recvd_props(zfs_cmd_t
*zc
)
2072 * Without this check, we would return local property values if the
2073 * caller has not already received properties on or after
2074 * SPA_VERSION_RECVD_PROPS.
2076 if (!dsl_prop_get_hasrecvd(zc
->zc_name
))
2077 return (SET_ERROR(ENOTSUP
));
2079 if (zc
->zc_nvlist_dst
!= 0 &&
2080 (error
= dsl_prop_get_received(zc
->zc_name
, &nv
)) == 0) {
2081 error
= put_nvlist(zc
, nv
);
2089 nvl_add_zplprop(objset_t
*os
, nvlist_t
*props
, zfs_prop_t prop
)
2095 * zfs_get_zplprop() will either find a value or give us
2096 * the default value (if there is one).
2098 if ((error
= zfs_get_zplprop(os
, prop
, &value
)) != 0)
2100 VERIFY(nvlist_add_uint64(props
, zfs_prop_to_name(prop
), value
) == 0);
2106 * zc_name name of filesystem
2107 * zc_nvlist_dst_size size of buffer for zpl property nvlist
2110 * zc_nvlist_dst zpl property nvlist
2111 * zc_nvlist_dst_size size of zpl property nvlist
2114 zfs_ioc_objset_zplprops(zfs_cmd_t
*zc
)
2119 /* XXX reading without owning */
2120 if ((err
= dmu_objset_hold(zc
->zc_name
, FTAG
, &os
)))
2123 dmu_objset_fast_stat(os
, &zc
->zc_objset_stats
);
2126 * NB: nvl_add_zplprop() will read the objset contents,
2127 * which we aren't supposed to do with a DS_MODE_USER
2128 * hold, because it could be inconsistent.
2130 if (zc
->zc_nvlist_dst
!= 0 &&
2131 !zc
->zc_objset_stats
.dds_inconsistent
&&
2132 dmu_objset_type(os
) == DMU_OST_ZFS
) {
2135 VERIFY(nvlist_alloc(&nv
, NV_UNIQUE_NAME
, KM_SLEEP
) == 0);
2136 if ((err
= nvl_add_zplprop(os
, nv
, ZFS_PROP_VERSION
)) == 0 &&
2137 (err
= nvl_add_zplprop(os
, nv
, ZFS_PROP_NORMALIZE
)) == 0 &&
2138 (err
= nvl_add_zplprop(os
, nv
, ZFS_PROP_UTF8ONLY
)) == 0 &&
2139 (err
= nvl_add_zplprop(os
, nv
, ZFS_PROP_CASE
)) == 0)
2140 err
= put_nvlist(zc
, nv
);
2143 err
= SET_ERROR(ENOENT
);
2145 dmu_objset_rele(os
, FTAG
);
2150 dataset_name_hidden(const char *name
)
2153 * Skip over datasets that are not visible in this zone,
2154 * internal datasets (which have a $ in their name), and
2155 * temporary datasets (which have a % in their name).
2157 if (strchr(name
, '$') != NULL
)
2159 if (strchr(name
, '%') != NULL
)
2161 if (!INGLOBALZONE(curproc
) && !zone_dataset_visible(name
, NULL
))
2168 * zc_name name of filesystem
2169 * zc_cookie zap cursor
2170 * zc_nvlist_dst_size size of buffer for property nvlist
2173 * zc_name name of next filesystem
2174 * zc_cookie zap cursor
2175 * zc_objset_stats stats
2176 * zc_nvlist_dst property nvlist
2177 * zc_nvlist_dst_size size of property nvlist
2180 zfs_ioc_dataset_list_next(zfs_cmd_t
*zc
)
2185 size_t orig_len
= strlen(zc
->zc_name
);
2188 if ((error
= dmu_objset_hold(zc
->zc_name
, FTAG
, &os
))) {
2189 if (error
== ENOENT
)
2190 error
= SET_ERROR(ESRCH
);
2194 p
= strrchr(zc
->zc_name
, '/');
2195 if (p
== NULL
|| p
[1] != '\0')
2196 (void) strlcat(zc
->zc_name
, "/", sizeof (zc
->zc_name
));
2197 p
= zc
->zc_name
+ strlen(zc
->zc_name
);
2200 error
= dmu_dir_list_next(os
,
2201 sizeof (zc
->zc_name
) - (p
- zc
->zc_name
), p
,
2202 NULL
, &zc
->zc_cookie
);
2203 if (error
== ENOENT
)
2204 error
= SET_ERROR(ESRCH
);
2205 } while (error
== 0 && dataset_name_hidden(zc
->zc_name
));
2206 dmu_objset_rele(os
, FTAG
);
2209 * If it's an internal dataset (ie. with a '$' in its name),
2210 * don't try to get stats for it, otherwise we'll return ENOENT.
2212 if (error
== 0 && strchr(zc
->zc_name
, '$') == NULL
) {
2213 error
= zfs_ioc_objset_stats(zc
); /* fill in the stats */
2214 if (error
== ENOENT
) {
2215 /* We lost a race with destroy, get the next one. */
2216 zc
->zc_name
[orig_len
] = '\0';
2225 * zc_name name of filesystem
2226 * zc_cookie zap cursor
2227 * zc_nvlist_dst_size size of buffer for property nvlist
2230 * zc_name name of next snapshot
2231 * zc_objset_stats stats
2232 * zc_nvlist_dst property nvlist
2233 * zc_nvlist_dst_size size of property nvlist
2236 zfs_ioc_snapshot_list_next(zfs_cmd_t
*zc
)
2241 error
= dmu_objset_hold(zc
->zc_name
, FTAG
, &os
);
2243 return (error
== ENOENT
? ESRCH
: error
);
2247 * A dataset name of maximum length cannot have any snapshots,
2248 * so exit immediately.
2250 if (strlcat(zc
->zc_name
, "@", sizeof (zc
->zc_name
)) >= MAXNAMELEN
) {
2251 dmu_objset_rele(os
, FTAG
);
2252 return (SET_ERROR(ESRCH
));
2255 error
= dmu_snapshot_list_next(os
,
2256 sizeof (zc
->zc_name
) - strlen(zc
->zc_name
),
2257 zc
->zc_name
+ strlen(zc
->zc_name
), &zc
->zc_obj
, &zc
->zc_cookie
,
2260 if (error
== 0 && !zc
->zc_simple
) {
2262 dsl_pool_t
*dp
= os
->os_dsl_dataset
->ds_dir
->dd_pool
;
2264 error
= dsl_dataset_hold_obj(dp
, zc
->zc_obj
, FTAG
, &ds
);
2268 error
= dmu_objset_from_ds(ds
, &ossnap
);
2270 error
= zfs_ioc_objset_stats_impl(zc
, ossnap
);
2271 dsl_dataset_rele(ds
, FTAG
);
2273 } else if (error
== ENOENT
) {
2274 error
= SET_ERROR(ESRCH
);
2277 dmu_objset_rele(os
, FTAG
);
2278 /* if we failed, undo the @ that we tacked on to zc_name */
2280 *strchr(zc
->zc_name
, '@') = '\0';
2285 zfs_prop_set_userquota(const char *dsname
, nvpair_t
*pair
)
2287 const char *propname
= nvpair_name(pair
);
2289 unsigned int vallen
;
2292 zfs_userquota_prop_t type
;
2298 if (nvpair_type(pair
) == DATA_TYPE_NVLIST
) {
2300 VERIFY(nvpair_value_nvlist(pair
, &attrs
) == 0);
2301 if (nvlist_lookup_nvpair(attrs
, ZPROP_VALUE
,
2303 return (SET_ERROR(EINVAL
));
2307 * A correctly constructed propname is encoded as
2308 * userquota@<rid>-<domain>.
2310 if ((dash
= strchr(propname
, '-')) == NULL
||
2311 nvpair_value_uint64_array(pair
, &valary
, &vallen
) != 0 ||
2313 return (SET_ERROR(EINVAL
));
2320 err
= zfs_sb_hold(dsname
, FTAG
, &zsb
, B_FALSE
);
2322 err
= zfs_set_userquota(zsb
, type
, domain
, rid
, quota
);
2323 zfs_sb_rele(zsb
, FTAG
);
2330 * If the named property is one that has a special function to set its value,
2331 * return 0 on success and a positive error code on failure; otherwise if it is
2332 * not one of the special properties handled by this function, return -1.
2334 * XXX: It would be better for callers of the property interface if we handled
2335 * these special cases in dsl_prop.c (in the dsl layer).
2338 zfs_prop_set_special(const char *dsname
, zprop_source_t source
,
2341 const char *propname
= nvpair_name(pair
);
2342 zfs_prop_t prop
= zfs_name_to_prop(propname
);
2346 if (prop
== ZPROP_INVAL
) {
2347 if (zfs_prop_userquota(propname
))
2348 return (zfs_prop_set_userquota(dsname
, pair
));
2352 if (nvpair_type(pair
) == DATA_TYPE_NVLIST
) {
2354 VERIFY(nvpair_value_nvlist(pair
, &attrs
) == 0);
2355 VERIFY(nvlist_lookup_nvpair(attrs
, ZPROP_VALUE
,
2359 if (zfs_prop_get_type(prop
) == PROP_TYPE_STRING
)
2362 VERIFY(0 == nvpair_value_uint64(pair
, &intval
));
2365 case ZFS_PROP_QUOTA
:
2366 err
= dsl_dir_set_quota(dsname
, source
, intval
);
2368 case ZFS_PROP_REFQUOTA
:
2369 err
= dsl_dataset_set_refquota(dsname
, source
, intval
);
2371 case ZFS_PROP_RESERVATION
:
2372 err
= dsl_dir_set_reservation(dsname
, source
, intval
);
2374 case ZFS_PROP_REFRESERVATION
:
2375 err
= dsl_dataset_set_refreservation(dsname
, source
, intval
);
2377 case ZFS_PROP_VOLSIZE
:
2378 err
= zvol_set_volsize(dsname
, intval
);
2380 case ZFS_PROP_SNAPDEV
:
2381 err
= zvol_set_snapdev(dsname
, intval
);
2383 case ZFS_PROP_VERSION
:
2387 if ((err
= zfs_sb_hold(dsname
, FTAG
, &zsb
, B_TRUE
)) != 0)
2390 err
= zfs_set_version(zsb
, intval
);
2391 zfs_sb_rele(zsb
, FTAG
);
2393 if (err
== 0 && intval
>= ZPL_VERSION_USERSPACE
) {
2396 zc
= kmem_zalloc(sizeof (zfs_cmd_t
),
2397 KM_SLEEP
| KM_NODEBUG
);
2398 (void) strcpy(zc
->zc_name
, dsname
);
2399 (void) zfs_ioc_userspace_upgrade(zc
);
2400 kmem_free(zc
, sizeof (zfs_cmd_t
));
2412 * This function is best effort. If it fails to set any of the given properties,
2413 * it continues to set as many as it can and returns the last error
2414 * encountered. If the caller provides a non-NULL errlist, it will be filled in
2415 * with the list of names of all the properties that failed along with the
2416 * corresponding error numbers.
2418 * If every property is set successfully, zero is returned and errlist is not
2422 zfs_set_prop_nvlist(const char *dsname
, zprop_source_t source
, nvlist_t
*nvl
,
2431 nvlist_t
*genericnvl
= fnvlist_alloc();
2432 nvlist_t
*retrynvl
= fnvlist_alloc();
2435 while ((pair
= nvlist_next_nvpair(nvl
, pair
)) != NULL
) {
2436 const char *propname
= nvpair_name(pair
);
2437 zfs_prop_t prop
= zfs_name_to_prop(propname
);
2440 /* decode the property value */
2442 if (nvpair_type(pair
) == DATA_TYPE_NVLIST
) {
2444 attrs
= fnvpair_value_nvlist(pair
);
2445 if (nvlist_lookup_nvpair(attrs
, ZPROP_VALUE
,
2447 err
= SET_ERROR(EINVAL
);
2450 /* Validate value type */
2451 if (err
== 0 && prop
== ZPROP_INVAL
) {
2452 if (zfs_prop_user(propname
)) {
2453 if (nvpair_type(propval
) != DATA_TYPE_STRING
)
2454 err
= SET_ERROR(EINVAL
);
2455 } else if (zfs_prop_userquota(propname
)) {
2456 if (nvpair_type(propval
) !=
2457 DATA_TYPE_UINT64_ARRAY
)
2458 err
= SET_ERROR(EINVAL
);
2460 err
= SET_ERROR(EINVAL
);
2462 } else if (err
== 0) {
2463 if (nvpair_type(propval
) == DATA_TYPE_STRING
) {
2464 if (zfs_prop_get_type(prop
) != PROP_TYPE_STRING
)
2465 err
= SET_ERROR(EINVAL
);
2466 } else if (nvpair_type(propval
) == DATA_TYPE_UINT64
) {
2469 intval
= fnvpair_value_uint64(propval
);
2471 switch (zfs_prop_get_type(prop
)) {
2472 case PROP_TYPE_NUMBER
:
2474 case PROP_TYPE_STRING
:
2475 err
= SET_ERROR(EINVAL
);
2477 case PROP_TYPE_INDEX
:
2478 if (zfs_prop_index_to_string(prop
,
2479 intval
, &unused
) != 0)
2480 err
= SET_ERROR(EINVAL
);
2484 "unknown property type");
2487 err
= SET_ERROR(EINVAL
);
2491 /* Validate permissions */
2493 err
= zfs_check_settable(dsname
, pair
, CRED());
2496 err
= zfs_prop_set_special(dsname
, source
, pair
);
2499 * For better performance we build up a list of
2500 * properties to set in a single transaction.
2502 err
= nvlist_add_nvpair(genericnvl
, pair
);
2503 } else if (err
!= 0 && nvl
!= retrynvl
) {
2505 * This may be a spurious error caused by
2506 * receiving quota and reservation out of order.
2507 * Try again in a second pass.
2509 err
= nvlist_add_nvpair(retrynvl
, pair
);
2514 if (errlist
!= NULL
)
2515 fnvlist_add_int32(errlist
, propname
, err
);
2520 if (nvl
!= retrynvl
&& !nvlist_empty(retrynvl
)) {
2525 if (!nvlist_empty(genericnvl
) &&
2526 dsl_props_set(dsname
, source
, genericnvl
) != 0) {
2528 * If this fails, we still want to set as many properties as we
2529 * can, so try setting them individually.
2532 while ((pair
= nvlist_next_nvpair(genericnvl
, pair
)) != NULL
) {
2533 const char *propname
= nvpair_name(pair
);
2537 if (nvpair_type(pair
) == DATA_TYPE_NVLIST
) {
2539 attrs
= fnvpair_value_nvlist(pair
);
2540 propval
= fnvlist_lookup_nvpair(attrs
,
2544 if (nvpair_type(propval
) == DATA_TYPE_STRING
) {
2545 strval
= fnvpair_value_string(propval
);
2546 err
= dsl_prop_set_string(dsname
, propname
,
2549 intval
= fnvpair_value_uint64(propval
);
2550 err
= dsl_prop_set_int(dsname
, propname
, source
,
2555 if (errlist
!= NULL
) {
2556 fnvlist_add_int32(errlist
, propname
,
2563 nvlist_free(genericnvl
);
2564 nvlist_free(retrynvl
);
2570 * Check that all the properties are valid user properties.
2573 zfs_check_userprops(const char *fsname
, nvlist_t
*nvl
)
2575 nvpair_t
*pair
= NULL
;
2578 while ((pair
= nvlist_next_nvpair(nvl
, pair
)) != NULL
) {
2579 const char *propname
= nvpair_name(pair
);
2581 if (!zfs_prop_user(propname
) ||
2582 nvpair_type(pair
) != DATA_TYPE_STRING
)
2583 return (SET_ERROR(EINVAL
));
2585 if ((error
= zfs_secpolicy_write_perms(fsname
,
2586 ZFS_DELEG_PERM_USERPROP
, CRED())))
2589 if (strlen(propname
) >= ZAP_MAXNAMELEN
)
2590 return (SET_ERROR(ENAMETOOLONG
));
2592 if (strlen(fnvpair_value_string(pair
)) >= ZAP_MAXVALUELEN
)
2593 return (SET_ERROR(E2BIG
));
2599 props_skip(nvlist_t
*props
, nvlist_t
*skipped
, nvlist_t
**newprops
)
2603 VERIFY(nvlist_alloc(newprops
, NV_UNIQUE_NAME
, KM_SLEEP
) == 0);
2606 while ((pair
= nvlist_next_nvpair(props
, pair
)) != NULL
) {
2607 if (nvlist_exists(skipped
, nvpair_name(pair
)))
2610 VERIFY(nvlist_add_nvpair(*newprops
, pair
) == 0);
2615 clear_received_props(const char *dsname
, nvlist_t
*props
,
2619 nvlist_t
*cleared_props
= NULL
;
2620 props_skip(props
, skipped
, &cleared_props
);
2621 if (!nvlist_empty(cleared_props
)) {
2623 * Acts on local properties until the dataset has received
2624 * properties at least once on or after SPA_VERSION_RECVD_PROPS.
2626 zprop_source_t flags
= (ZPROP_SRC_NONE
|
2627 (dsl_prop_get_hasrecvd(dsname
) ? ZPROP_SRC_RECEIVED
: 0));
2628 err
= zfs_set_prop_nvlist(dsname
, flags
, cleared_props
, NULL
);
2630 nvlist_free(cleared_props
);
2636 * zc_name name of filesystem
2637 * zc_value name of property to set
2638 * zc_nvlist_src{_size} nvlist of properties to apply
2639 * zc_cookie received properties flag
2642 * zc_nvlist_dst{_size} error for each unapplied received property
2645 zfs_ioc_set_prop(zfs_cmd_t
*zc
)
2648 boolean_t received
= zc
->zc_cookie
;
2649 zprop_source_t source
= (received
? ZPROP_SRC_RECEIVED
:
2654 if ((error
= get_nvlist(zc
->zc_nvlist_src
, zc
->zc_nvlist_src_size
,
2655 zc
->zc_iflags
, &nvl
)) != 0)
2659 nvlist_t
*origprops
;
2661 if (dsl_prop_get_received(zc
->zc_name
, &origprops
) == 0) {
2662 (void) clear_received_props(zc
->zc_name
,
2664 nvlist_free(origprops
);
2667 error
= dsl_prop_set_hasrecvd(zc
->zc_name
);
2670 errors
= fnvlist_alloc();
2672 error
= zfs_set_prop_nvlist(zc
->zc_name
, source
, nvl
, errors
);
2674 if (zc
->zc_nvlist_dst
!= 0 && errors
!= NULL
) {
2675 (void) put_nvlist(zc
, errors
);
2678 nvlist_free(errors
);
2685 * zc_name name of filesystem
2686 * zc_value name of property to inherit
2687 * zc_cookie revert to received value if TRUE
2692 zfs_ioc_inherit_prop(zfs_cmd_t
*zc
)
2694 const char *propname
= zc
->zc_value
;
2695 zfs_prop_t prop
= zfs_name_to_prop(propname
);
2696 boolean_t received
= zc
->zc_cookie
;
2697 zprop_source_t source
= (received
2698 ? ZPROP_SRC_NONE
/* revert to received value, if any */
2699 : ZPROP_SRC_INHERITED
); /* explicitly inherit */
2708 * zfs_prop_set_special() expects properties in the form of an
2709 * nvpair with type info.
2711 if (prop
== ZPROP_INVAL
) {
2712 if (!zfs_prop_user(propname
))
2713 return (SET_ERROR(EINVAL
));
2715 type
= PROP_TYPE_STRING
;
2716 } else if (prop
== ZFS_PROP_VOLSIZE
||
2717 prop
== ZFS_PROP_VERSION
) {
2718 return (SET_ERROR(EINVAL
));
2720 type
= zfs_prop_get_type(prop
);
2723 VERIFY(nvlist_alloc(&dummy
, NV_UNIQUE_NAME
, KM_SLEEP
) == 0);
2726 case PROP_TYPE_STRING
:
2727 VERIFY(0 == nvlist_add_string(dummy
, propname
, ""));
2729 case PROP_TYPE_NUMBER
:
2730 case PROP_TYPE_INDEX
:
2731 VERIFY(0 == nvlist_add_uint64(dummy
, propname
, 0));
2735 return (SET_ERROR(EINVAL
));
2738 pair
= nvlist_next_nvpair(dummy
, NULL
);
2739 err
= zfs_prop_set_special(zc
->zc_name
, source
, pair
);
2742 return (err
); /* special property already handled */
2745 * Only check this in the non-received case. We want to allow
2746 * 'inherit -S' to revert non-inheritable properties like quota
2747 * and reservation to the received or default values even though
2748 * they are not considered inheritable.
2750 if (prop
!= ZPROP_INVAL
&& !zfs_prop_inheritable(prop
))
2751 return (SET_ERROR(EINVAL
));
2754 /* property name has been validated by zfs_secpolicy_inherit_prop() */
2755 return (dsl_prop_inherit(zc
->zc_name
, zc
->zc_value
, source
));
2759 zfs_ioc_pool_set_props(zfs_cmd_t
*zc
)
2766 if ((error
= get_nvlist(zc
->zc_nvlist_src
, zc
->zc_nvlist_src_size
,
2767 zc
->zc_iflags
, &props
)))
2771 * If the only property is the configfile, then just do a spa_lookup()
2772 * to handle the faulted case.
2774 pair
= nvlist_next_nvpair(props
, NULL
);
2775 if (pair
!= NULL
&& strcmp(nvpair_name(pair
),
2776 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE
)) == 0 &&
2777 nvlist_next_nvpair(props
, pair
) == NULL
) {
2778 mutex_enter(&spa_namespace_lock
);
2779 if ((spa
= spa_lookup(zc
->zc_name
)) != NULL
) {
2780 spa_configfile_set(spa
, props
, B_FALSE
);
2781 spa_config_sync(spa
, B_FALSE
, B_TRUE
);
2783 mutex_exit(&spa_namespace_lock
);
2790 if ((error
= spa_open(zc
->zc_name
, &spa
, FTAG
)) != 0) {
2795 error
= spa_prop_set(spa
, props
);
2798 spa_close(spa
, FTAG
);
2804 zfs_ioc_pool_get_props(zfs_cmd_t
*zc
)
2808 nvlist_t
*nvp
= NULL
;
2810 if ((error
= spa_open(zc
->zc_name
, &spa
, FTAG
)) != 0) {
2812 * If the pool is faulted, there may be properties we can still
2813 * get (such as altroot and cachefile), so attempt to get them
2816 mutex_enter(&spa_namespace_lock
);
2817 if ((spa
= spa_lookup(zc
->zc_name
)) != NULL
)
2818 error
= spa_prop_get(spa
, &nvp
);
2819 mutex_exit(&spa_namespace_lock
);
2821 error
= spa_prop_get(spa
, &nvp
);
2822 spa_close(spa
, FTAG
);
2825 if (error
== 0 && zc
->zc_nvlist_dst
!= 0)
2826 error
= put_nvlist(zc
, nvp
);
2828 error
= SET_ERROR(EFAULT
);
2836 * zc_name name of filesystem
2837 * zc_nvlist_src{_size} nvlist of delegated permissions
2838 * zc_perm_action allow/unallow flag
2843 zfs_ioc_set_fsacl(zfs_cmd_t
*zc
)
2846 nvlist_t
*fsaclnv
= NULL
;
2848 if ((error
= get_nvlist(zc
->zc_nvlist_src
, zc
->zc_nvlist_src_size
,
2849 zc
->zc_iflags
, &fsaclnv
)) != 0)
2853 * Verify nvlist is constructed correctly
2855 if ((error
= zfs_deleg_verify_nvlist(fsaclnv
)) != 0) {
2856 nvlist_free(fsaclnv
);
2857 return (SET_ERROR(EINVAL
));
2861 * If we don't have PRIV_SYS_MOUNT, then validate
2862 * that user is allowed to hand out each permission in
2866 error
= secpolicy_zfs(CRED());
2868 if (zc
->zc_perm_action
== B_FALSE
) {
2869 error
= dsl_deleg_can_allow(zc
->zc_name
,
2872 error
= dsl_deleg_can_unallow(zc
->zc_name
,
2878 error
= dsl_deleg_set(zc
->zc_name
, fsaclnv
, zc
->zc_perm_action
);
2880 nvlist_free(fsaclnv
);
2886 * zc_name name of filesystem
2889 * zc_nvlist_src{_size} nvlist of delegated permissions
2892 zfs_ioc_get_fsacl(zfs_cmd_t
*zc
)
2897 if ((error
= dsl_deleg_get(zc
->zc_name
, &nvp
)) == 0) {
2898 error
= put_nvlist(zc
, nvp
);
2907 zfs_create_cb(objset_t
*os
, void *arg
, cred_t
*cr
, dmu_tx_t
*tx
)
2909 zfs_creat_t
*zct
= arg
;
2911 zfs_create_fs(os
, cr
, zct
->zct_zplprops
, tx
);
2914 #define ZFS_PROP_UNDEFINED ((uint64_t)-1)
2918 * os parent objset pointer (NULL if root fs)
2919 * fuids_ok fuids allowed in this version of the spa?
2920 * sa_ok SAs allowed in this version of the spa?
2921 * createprops list of properties requested by creator
2924 * zplprops values for the zplprops we attach to the master node object
2925 * is_ci true if requested file system will be purely case-insensitive
2927 * Determine the settings for utf8only, normalization and
2928 * casesensitivity. Specific values may have been requested by the
2929 * creator and/or we can inherit values from the parent dataset. If
2930 * the file system is of too early a vintage, a creator can not
2931 * request settings for these properties, even if the requested
2932 * setting is the default value. We don't actually want to create dsl
2933 * properties for these, so remove them from the source nvlist after
2937 zfs_fill_zplprops_impl(objset_t
*os
, uint64_t zplver
,
2938 boolean_t fuids_ok
, boolean_t sa_ok
, nvlist_t
*createprops
,
2939 nvlist_t
*zplprops
, boolean_t
*is_ci
)
2941 uint64_t sense
= ZFS_PROP_UNDEFINED
;
2942 uint64_t norm
= ZFS_PROP_UNDEFINED
;
2943 uint64_t u8
= ZFS_PROP_UNDEFINED
;
2946 ASSERT(zplprops
!= NULL
);
2949 * Pull out creator prop choices, if any.
2952 (void) nvlist_lookup_uint64(createprops
,
2953 zfs_prop_to_name(ZFS_PROP_VERSION
), &zplver
);
2954 (void) nvlist_lookup_uint64(createprops
,
2955 zfs_prop_to_name(ZFS_PROP_NORMALIZE
), &norm
);
2956 (void) nvlist_remove_all(createprops
,
2957 zfs_prop_to_name(ZFS_PROP_NORMALIZE
));
2958 (void) nvlist_lookup_uint64(createprops
,
2959 zfs_prop_to_name(ZFS_PROP_UTF8ONLY
), &u8
);
2960 (void) nvlist_remove_all(createprops
,
2961 zfs_prop_to_name(ZFS_PROP_UTF8ONLY
));
2962 (void) nvlist_lookup_uint64(createprops
,
2963 zfs_prop_to_name(ZFS_PROP_CASE
), &sense
);
2964 (void) nvlist_remove_all(createprops
,
2965 zfs_prop_to_name(ZFS_PROP_CASE
));
2969 * If the zpl version requested is whacky or the file system
2970 * or pool is version is too "young" to support normalization
2971 * and the creator tried to set a value for one of the props,
2974 if ((zplver
< ZPL_VERSION_INITIAL
|| zplver
> ZPL_VERSION
) ||
2975 (zplver
>= ZPL_VERSION_FUID
&& !fuids_ok
) ||
2976 (zplver
>= ZPL_VERSION_SA
&& !sa_ok
) ||
2977 (zplver
< ZPL_VERSION_NORMALIZATION
&&
2978 (norm
!= ZFS_PROP_UNDEFINED
|| u8
!= ZFS_PROP_UNDEFINED
||
2979 sense
!= ZFS_PROP_UNDEFINED
)))
2980 return (SET_ERROR(ENOTSUP
));
2983 * Put the version in the zplprops
2985 VERIFY(nvlist_add_uint64(zplprops
,
2986 zfs_prop_to_name(ZFS_PROP_VERSION
), zplver
) == 0);
2988 if (norm
== ZFS_PROP_UNDEFINED
&&
2989 (error
= zfs_get_zplprop(os
, ZFS_PROP_NORMALIZE
, &norm
)) != 0)
2991 VERIFY(nvlist_add_uint64(zplprops
,
2992 zfs_prop_to_name(ZFS_PROP_NORMALIZE
), norm
) == 0);
2995 * If we're normalizing, names must always be valid UTF-8 strings.
2999 if (u8
== ZFS_PROP_UNDEFINED
&&
3000 (error
= zfs_get_zplprop(os
, ZFS_PROP_UTF8ONLY
, &u8
)) != 0)
3002 VERIFY(nvlist_add_uint64(zplprops
,
3003 zfs_prop_to_name(ZFS_PROP_UTF8ONLY
), u8
) == 0);
3005 if (sense
== ZFS_PROP_UNDEFINED
&&
3006 (error
= zfs_get_zplprop(os
, ZFS_PROP_CASE
, &sense
)) != 0)
3008 VERIFY(nvlist_add_uint64(zplprops
,
3009 zfs_prop_to_name(ZFS_PROP_CASE
), sense
) == 0);
3012 *is_ci
= (sense
== ZFS_CASE_INSENSITIVE
);
3018 zfs_fill_zplprops(const char *dataset
, nvlist_t
*createprops
,
3019 nvlist_t
*zplprops
, boolean_t
*is_ci
)
3021 boolean_t fuids_ok
, sa_ok
;
3022 uint64_t zplver
= ZPL_VERSION
;
3023 objset_t
*os
= NULL
;
3024 char parentname
[MAXNAMELEN
];
3030 (void) strlcpy(parentname
, dataset
, sizeof (parentname
));
3031 cp
= strrchr(parentname
, '/');
3035 if ((error
= spa_open(dataset
, &spa
, FTAG
)) != 0)
3038 spa_vers
= spa_version(spa
);
3039 spa_close(spa
, FTAG
);
3041 zplver
= zfs_zpl_version_map(spa_vers
);
3042 fuids_ok
= (zplver
>= ZPL_VERSION_FUID
);
3043 sa_ok
= (zplver
>= ZPL_VERSION_SA
);
3046 * Open parent object set so we can inherit zplprop values.
3048 if ((error
= dmu_objset_hold(parentname
, FTAG
, &os
)) != 0)
3051 error
= zfs_fill_zplprops_impl(os
, zplver
, fuids_ok
, sa_ok
, createprops
,
3053 dmu_objset_rele(os
, FTAG
);
3058 zfs_fill_zplprops_root(uint64_t spa_vers
, nvlist_t
*createprops
,
3059 nvlist_t
*zplprops
, boolean_t
*is_ci
)
3063 uint64_t zplver
= ZPL_VERSION
;
3066 zplver
= zfs_zpl_version_map(spa_vers
);
3067 fuids_ok
= (zplver
>= ZPL_VERSION_FUID
);
3068 sa_ok
= (zplver
>= ZPL_VERSION_SA
);
3070 error
= zfs_fill_zplprops_impl(NULL
, zplver
, fuids_ok
, sa_ok
,
3071 createprops
, zplprops
, is_ci
);
3077 * "type" -> dmu_objset_type_t (int32)
3078 * (optional) "props" -> { prop -> value }
3081 * outnvl: propname -> error code (int32)
3084 zfs_ioc_create(const char *fsname
, nvlist_t
*innvl
, nvlist_t
*outnvl
)
3087 zfs_creat_t zct
= { 0 };
3088 nvlist_t
*nvprops
= NULL
;
3089 void (*cbfunc
)(objset_t
*os
, void *arg
, cred_t
*cr
, dmu_tx_t
*tx
);
3091 dmu_objset_type_t type
;
3092 boolean_t is_insensitive
= B_FALSE
;
3094 if (nvlist_lookup_int32(innvl
, "type", &type32
) != 0)
3095 return (SET_ERROR(EINVAL
));
3097 (void) nvlist_lookup_nvlist(innvl
, "props", &nvprops
);
3101 cbfunc
= zfs_create_cb
;
3105 cbfunc
= zvol_create_cb
;
3112 if (strchr(fsname
, '@') ||
3113 strchr(fsname
, '%'))
3114 return (SET_ERROR(EINVAL
));
3116 zct
.zct_props
= nvprops
;
3119 return (SET_ERROR(EINVAL
));
3121 if (type
== DMU_OST_ZVOL
) {
3122 uint64_t volsize
, volblocksize
;
3124 if (nvprops
== NULL
)
3125 return (SET_ERROR(EINVAL
));
3126 if (nvlist_lookup_uint64(nvprops
,
3127 zfs_prop_to_name(ZFS_PROP_VOLSIZE
), &volsize
) != 0)
3128 return (SET_ERROR(EINVAL
));
3130 if ((error
= nvlist_lookup_uint64(nvprops
,
3131 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE
),
3132 &volblocksize
)) != 0 && error
!= ENOENT
)
3133 return (SET_ERROR(EINVAL
));
3136 volblocksize
= zfs_prop_default_numeric(
3137 ZFS_PROP_VOLBLOCKSIZE
);
3139 if ((error
= zvol_check_volblocksize(
3140 volblocksize
)) != 0 ||
3141 (error
= zvol_check_volsize(volsize
,
3142 volblocksize
)) != 0)
3144 } else if (type
== DMU_OST_ZFS
) {
3148 * We have to have normalization and
3149 * case-folding flags correct when we do the
3150 * file system creation, so go figure them out
3153 VERIFY(nvlist_alloc(&zct
.zct_zplprops
,
3154 NV_UNIQUE_NAME
, KM_SLEEP
) == 0);
3155 error
= zfs_fill_zplprops(fsname
, nvprops
,
3156 zct
.zct_zplprops
, &is_insensitive
);
3158 nvlist_free(zct
.zct_zplprops
);
3163 error
= dmu_objset_create(fsname
, type
,
3164 is_insensitive
? DS_FLAG_CI_DATASET
: 0, cbfunc
, &zct
);
3165 nvlist_free(zct
.zct_zplprops
);
3168 * It would be nice to do this atomically.
3171 error
= zfs_set_prop_nvlist(fsname
, ZPROP_SRC_LOCAL
,
3174 (void) dsl_destroy_head(fsname
);
3178 if (error
== 0 && type
== DMU_OST_ZVOL
)
3179 zvol_create_minors(fsname
);
3187 * "origin" -> name of origin snapshot
3188 * (optional) "props" -> { prop -> value }
3192 * outnvl: propname -> error code (int32)
3195 zfs_ioc_clone(const char *fsname
, nvlist_t
*innvl
, nvlist_t
*outnvl
)
3198 nvlist_t
*nvprops
= NULL
;
3201 if (nvlist_lookup_string(innvl
, "origin", &origin_name
) != 0)
3202 return (SET_ERROR(EINVAL
));
3203 (void) nvlist_lookup_nvlist(innvl
, "props", &nvprops
);
3205 if (strchr(fsname
, '@') ||
3206 strchr(fsname
, '%'))
3207 return (SET_ERROR(EINVAL
));
3209 if (dataset_namecheck(origin_name
, NULL
, NULL
) != 0)
3210 return (SET_ERROR(EINVAL
));
3211 error
= dmu_objset_clone(fsname
, origin_name
);
3216 * It would be nice to do this atomically.
3219 error
= zfs_set_prop_nvlist(fsname
, ZPROP_SRC_LOCAL
,
3222 (void) dsl_destroy_head(fsname
);
3227 zvol_create_minors(fsname
);
3235 * "snaps" -> { snapshot1, snapshot2 }
3236 * (optional) "props" -> { prop -> value (string) }
3239 * outnvl: snapshot -> error code (int32)
3242 zfs_ioc_snapshot(const char *poolname
, nvlist_t
*innvl
, nvlist_t
*outnvl
)
3245 nvlist_t
*props
= NULL
;
3247 nvpair_t
*pair
, *pair2
;
3249 (void) nvlist_lookup_nvlist(innvl
, "props", &props
);
3250 if ((error
= zfs_check_userprops(poolname
, props
)) != 0)
3253 if (!nvlist_empty(props
) &&
3254 zfs_earlier_version(poolname
, SPA_VERSION_SNAP_PROPS
))
3255 return (SET_ERROR(ENOTSUP
));
3257 if (nvlist_lookup_nvlist(innvl
, "snaps", &snaps
) != 0)
3258 return (SET_ERROR(EINVAL
));
3259 poollen
= strlen(poolname
);
3260 for (pair
= nvlist_next_nvpair(snaps
, NULL
); pair
!= NULL
;
3261 pair
= nvlist_next_nvpair(snaps
, pair
)) {
3262 const char *name
= nvpair_name(pair
);
3263 const char *cp
= strchr(name
, '@');
3266 * The snap name must contain an @, and the part after it must
3267 * contain only valid characters.
3270 zfs_component_namecheck(cp
+ 1, NULL
, NULL
) != 0)
3271 return (SET_ERROR(EINVAL
));
3274 * The snap must be in the specified pool.
3276 if (strncmp(name
, poolname
, poollen
) != 0 ||
3277 (name
[poollen
] != '/' && name
[poollen
] != '@'))
3278 return (SET_ERROR(EXDEV
));
3280 /* This must be the only snap of this fs. */
3281 for (pair2
= nvlist_next_nvpair(snaps
, pair
);
3282 pair2
!= NULL
; pair2
= nvlist_next_nvpair(snaps
, pair2
)) {
3283 if (strncmp(name
, nvpair_name(pair2
), cp
- name
+ 1)
3285 return (SET_ERROR(EXDEV
));
3290 error
= dsl_dataset_snapshot(snaps
, props
, outnvl
);
3294 zvol_create_minors(poolname
);
3301 * innvl: "message" -> string
3305 zfs_ioc_log_history(const char *unused
, nvlist_t
*innvl
, nvlist_t
*outnvl
)
3313 * The poolname in the ioctl is not set, we get it from the TSD,
3314 * which was set at the end of the last successful ioctl that allows
3315 * logging. The secpolicy func already checked that it is set.
3316 * Only one log ioctl is allowed after each successful ioctl, so
3317 * we clear the TSD here.
3319 poolname
= tsd_get(zfs_allow_log_key
);
3320 (void) tsd_set(zfs_allow_log_key
, NULL
);
3321 error
= spa_open(poolname
, &spa
, FTAG
);
3326 if (nvlist_lookup_string(innvl
, "message", &message
) != 0) {
3327 spa_close(spa
, FTAG
);
3328 return (SET_ERROR(EINVAL
));
3331 if (spa_version(spa
) < SPA_VERSION_ZPOOL_HISTORY
) {
3332 spa_close(spa
, FTAG
);
3333 return (SET_ERROR(ENOTSUP
));
3336 error
= spa_history_log(spa
, message
);
3337 spa_close(spa
, FTAG
);
3342 * The dp_config_rwlock must not be held when calling this, because the
3343 * unmount may need to write out data.
3345 * This function is best-effort. Callers must deal gracefully if it
3346 * remains mounted (or is remounted after this call).
3348 * XXX: This function should detect a failure to unmount a snapdir of a dataset
3349 * and return the appropriate error code when it is mounted. Its Illumos and
3350 * FreeBSD counterparts do this. We do not do this on Linux because there is no
3351 * clear way to access the mount information that FreeBSD and Illumos use to
3352 * distinguish between things with mounted snapshot directories, and things
3353 * without mounted snapshot directories, which include zvols. Returning a
3354 * failure for the latter causes `zfs destroy` to fail on zvol snapshots.
3357 zfs_unmount_snap(const char *snapname
)
3359 zfs_sb_t
*zsb
= NULL
;
3364 if ((ptr
= strchr(snapname
, '@')) == NULL
)
3367 dsname
= kmem_alloc(ptr
- snapname
+ 1, KM_SLEEP
);
3368 strlcpy(dsname
, snapname
, ptr
- snapname
+ 1);
3369 fullname
= strdup(snapname
);
3371 if (zfs_sb_hold(dsname
, FTAG
, &zsb
, B_FALSE
) == 0) {
3372 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zsb
->z_os
)));
3373 (void) zfsctl_unmount_snapshot(zsb
, fullname
, MNT_FORCE
);
3374 zfs_sb_rele(zsb
, FTAG
);
3377 kmem_free(dsname
, ptr
- snapname
+ 1);
3385 zfs_unmount_snap_cb(const char *snapname
, void *arg
)
3387 return (zfs_unmount_snap(snapname
));
3391 * When a clone is destroyed, its origin may also need to be destroyed,
3392 * in which case it must be unmounted. This routine will do that unmount
3396 zfs_destroy_unmount_origin(const char *fsname
)
3402 error
= dmu_objset_hold(fsname
, FTAG
, &os
);
3405 ds
= dmu_objset_ds(os
);
3406 if (dsl_dir_is_clone(ds
->ds_dir
) && DS_IS_DEFER_DESTROY(ds
->ds_prev
)) {
3407 char originname
[MAXNAMELEN
];
3408 dsl_dataset_name(ds
->ds_prev
, originname
);
3409 dmu_objset_rele(os
, FTAG
);
3410 (void) zfs_unmount_snap(originname
);
3412 dmu_objset_rele(os
, FTAG
);
3418 * "snaps" -> { snapshot1, snapshot2 }
3419 * (optional boolean) "defer"
3422 * outnvl: snapshot -> error code (int32)
3426 zfs_ioc_destroy_snaps(const char *poolname
, nvlist_t
*innvl
, nvlist_t
*outnvl
)
3432 if (nvlist_lookup_nvlist(innvl
, "snaps", &snaps
) != 0)
3433 return (SET_ERROR(EINVAL
));
3434 defer
= nvlist_exists(innvl
, "defer");
3436 for (pair
= nvlist_next_nvpair(snaps
, NULL
); pair
!= NULL
;
3437 pair
= nvlist_next_nvpair(snaps
, pair
)) {
3438 (void) zfs_unmount_snap(nvpair_name(pair
));
3439 (void) zvol_remove_minor(nvpair_name(pair
));
3442 return (dsl_destroy_snapshots_nvl(snaps
, defer
, outnvl
));
3446 * Create bookmarks. Bookmark names are of the form <fs>#<bmark>.
3447 * All bookmarks must be in the same pool.
3450 * bookmark1 -> snapshot1, bookmark2 -> snapshot2
3453 * outnvl: bookmark -> error code (int32)
3458 zfs_ioc_bookmark(const char *poolname
, nvlist_t
*innvl
, nvlist_t
*outnvl
)
3460 nvpair_t
*pair
, *pair2
;
3462 for (pair
= nvlist_next_nvpair(innvl
, NULL
);
3463 pair
!= NULL
; pair
= nvlist_next_nvpair(innvl
, pair
)) {
3467 * Verify the snapshot argument.
3469 if (nvpair_value_string(pair
, &snap_name
) != 0)
3470 return (SET_ERROR(EINVAL
));
3473 /* Verify that the keys (bookmarks) are unique */
3474 for (pair2
= nvlist_next_nvpair(innvl
, pair
);
3475 pair2
!= NULL
; pair2
= nvlist_next_nvpair(innvl
, pair2
)) {
3476 if (strcmp(nvpair_name(pair
), nvpair_name(pair2
)) == 0)
3477 return (SET_ERROR(EINVAL
));
3481 return (dsl_bookmark_create(innvl
, outnvl
));
3486 * property 1, property 2, ...
3490 * bookmark name 1 -> { property 1, property 2, ... },
3491 * bookmark name 2 -> { property 1, property 2, ... }
3496 zfs_ioc_get_bookmarks(const char *fsname
, nvlist_t
*innvl
, nvlist_t
*outnvl
)
3498 return (dsl_get_bookmarks(fsname
, innvl
, outnvl
));
3503 * bookmark name 1, bookmark name 2
3506 * outnvl: bookmark -> error code (int32)
3510 zfs_ioc_destroy_bookmarks(const char *poolname
, nvlist_t
*innvl
,
3516 poollen
= strlen(poolname
);
3517 for (pair
= nvlist_next_nvpair(innvl
, NULL
);
3518 pair
!= NULL
; pair
= nvlist_next_nvpair(innvl
, pair
)) {
3519 const char *name
= nvpair_name(pair
);
3520 const char *cp
= strchr(name
, '#');
3523 * The bookmark name must contain an #, and the part after it
3524 * must contain only valid characters.
3527 zfs_component_namecheck(cp
+ 1, NULL
, NULL
) != 0)
3528 return (SET_ERROR(EINVAL
));
3531 * The bookmark must be in the specified pool.
3533 if (strncmp(name
, poolname
, poollen
) != 0 ||
3534 (name
[poollen
] != '/' && name
[poollen
] != '#'))
3535 return (SET_ERROR(EXDEV
));
3538 error
= dsl_bookmark_destroy(innvl
, outnvl
);
3544 * zc_name name of dataset to destroy
3545 * zc_objset_type type of objset
3546 * zc_defer_destroy mark for deferred destroy
3551 zfs_ioc_destroy(zfs_cmd_t
*zc
)
3555 if (zc
->zc_objset_type
== DMU_OST_ZFS
) {
3556 err
= zfs_unmount_snap(zc
->zc_name
);
3561 if (strchr(zc
->zc_name
, '@'))
3562 err
= dsl_destroy_snapshot(zc
->zc_name
, zc
->zc_defer_destroy
);
3564 err
= dsl_destroy_head(zc
->zc_name
);
3565 if (zc
->zc_objset_type
== DMU_OST_ZVOL
&& err
== 0)
3566 (void) zvol_remove_minor(zc
->zc_name
);
3571 * fsname is name of dataset to rollback (to most recent snapshot)
3573 * innvl is not used.
3575 * outnvl: "target" -> name of most recent snapshot
3580 zfs_ioc_rollback(const char *fsname
, nvlist_t
*args
, nvlist_t
*outnvl
)
3585 if (get_zfs_sb(fsname
, &zsb
) == 0) {
3586 error
= zfs_suspend_fs(zsb
);
3590 error
= dsl_dataset_rollback(fsname
, zsb
, outnvl
);
3591 resume_err
= zfs_resume_fs(zsb
, fsname
);
3592 error
= error
? error
: resume_err
;
3594 deactivate_super(zsb
->z_sb
);
3596 error
= dsl_dataset_rollback(fsname
, NULL
, outnvl
);
3602 recursive_unmount(const char *fsname
, void *arg
)
3604 const char *snapname
= arg
;
3608 fullname
= kmem_asprintf("%s@%s", fsname
, snapname
);
3609 error
= zfs_unmount_snap(fullname
);
3617 * zc_name old name of dataset
3618 * zc_value new name of dataset
3619 * zc_cookie recursive flag (only valid for snapshots)
3624 zfs_ioc_rename(zfs_cmd_t
*zc
)
3626 boolean_t recursive
= zc
->zc_cookie
& 1;
3629 zc
->zc_value
[sizeof (zc
->zc_value
) - 1] = '\0';
3630 if (dataset_namecheck(zc
->zc_value
, NULL
, NULL
) != 0 ||
3631 strchr(zc
->zc_value
, '%'))
3632 return (SET_ERROR(EINVAL
));
3634 at
= strchr(zc
->zc_name
, '@');
3636 /* snaps must be in same fs */
3639 if (strncmp(zc
->zc_name
, zc
->zc_value
, at
- zc
->zc_name
+ 1))
3640 return (SET_ERROR(EXDEV
));
3642 if (zc
->zc_objset_type
== DMU_OST_ZFS
) {
3643 error
= dmu_objset_find(zc
->zc_name
,
3644 recursive_unmount
, at
+ 1,
3645 recursive
? DS_FIND_CHILDREN
: 0);
3651 error
= dsl_dataset_rename_snapshot(zc
->zc_name
,
3652 at
+ 1, strchr(zc
->zc_value
, '@') + 1, recursive
);
3657 return (dsl_dir_rename(zc
->zc_name
, zc
->zc_value
));
3662 zfs_check_settable(const char *dsname
, nvpair_t
*pair
, cred_t
*cr
)
3664 const char *propname
= nvpair_name(pair
);
3665 boolean_t issnap
= (strchr(dsname
, '@') != NULL
);
3666 zfs_prop_t prop
= zfs_name_to_prop(propname
);
3670 if (prop
== ZPROP_INVAL
) {
3671 if (zfs_prop_user(propname
)) {
3672 if ((err
= zfs_secpolicy_write_perms(dsname
,
3673 ZFS_DELEG_PERM_USERPROP
, cr
)))
3678 if (!issnap
&& zfs_prop_userquota(propname
)) {
3679 const char *perm
= NULL
;
3680 const char *uq_prefix
=
3681 zfs_userquota_prop_prefixes
[ZFS_PROP_USERQUOTA
];
3682 const char *gq_prefix
=
3683 zfs_userquota_prop_prefixes
[ZFS_PROP_GROUPQUOTA
];
3685 if (strncmp(propname
, uq_prefix
,
3686 strlen(uq_prefix
)) == 0) {
3687 perm
= ZFS_DELEG_PERM_USERQUOTA
;
3688 } else if (strncmp(propname
, gq_prefix
,
3689 strlen(gq_prefix
)) == 0) {
3690 perm
= ZFS_DELEG_PERM_GROUPQUOTA
;
3692 /* USERUSED and GROUPUSED are read-only */
3693 return (SET_ERROR(EINVAL
));
3696 if ((err
= zfs_secpolicy_write_perms(dsname
, perm
, cr
)))
3701 return (SET_ERROR(EINVAL
));
3705 return (SET_ERROR(EINVAL
));
3707 if (nvpair_type(pair
) == DATA_TYPE_NVLIST
) {
3709 * dsl_prop_get_all_impl() returns properties in this
3713 VERIFY(nvpair_value_nvlist(pair
, &attrs
) == 0);
3714 VERIFY(nvlist_lookup_nvpair(attrs
, ZPROP_VALUE
,
3719 * Check that this value is valid for this pool version
3722 case ZFS_PROP_COMPRESSION
:
3724 * If the user specified gzip compression, make sure
3725 * the SPA supports it. We ignore any errors here since
3726 * we'll catch them later.
3728 if (nvpair_type(pair
) == DATA_TYPE_UINT64
&&
3729 nvpair_value_uint64(pair
, &intval
) == 0) {
3730 if (intval
>= ZIO_COMPRESS_GZIP_1
&&
3731 intval
<= ZIO_COMPRESS_GZIP_9
&&
3732 zfs_earlier_version(dsname
,
3733 SPA_VERSION_GZIP_COMPRESSION
)) {
3734 return (SET_ERROR(ENOTSUP
));
3737 if (intval
== ZIO_COMPRESS_ZLE
&&
3738 zfs_earlier_version(dsname
,
3739 SPA_VERSION_ZLE_COMPRESSION
))
3740 return (SET_ERROR(ENOTSUP
));
3742 if (intval
== ZIO_COMPRESS_LZ4
) {
3745 if ((err
= spa_open(dsname
, &spa
, FTAG
)) != 0)
3748 if (!spa_feature_is_enabled(spa
,
3749 SPA_FEATURE_LZ4_COMPRESS
)) {
3750 spa_close(spa
, FTAG
);
3751 return (SET_ERROR(ENOTSUP
));
3753 spa_close(spa
, FTAG
);
3757 * If this is a bootable dataset then
3758 * verify that the compression algorithm
3759 * is supported for booting. We must return
3760 * something other than ENOTSUP since it
3761 * implies a downrev pool version.
3763 if (zfs_is_bootfs(dsname
) &&
3764 !BOOTFS_COMPRESS_VALID(intval
)) {
3765 return (SET_ERROR(ERANGE
));
3770 case ZFS_PROP_COPIES
:
3771 if (zfs_earlier_version(dsname
, SPA_VERSION_DITTO_BLOCKS
))
3772 return (SET_ERROR(ENOTSUP
));
3775 case ZFS_PROP_DEDUP
:
3776 if (zfs_earlier_version(dsname
, SPA_VERSION_DEDUP
))
3777 return (SET_ERROR(ENOTSUP
));
3780 case ZFS_PROP_SHARESMB
:
3781 if (zpl_earlier_version(dsname
, ZPL_VERSION_FUID
))
3782 return (SET_ERROR(ENOTSUP
));
3785 case ZFS_PROP_ACLINHERIT
:
3786 if (nvpair_type(pair
) == DATA_TYPE_UINT64
&&
3787 nvpair_value_uint64(pair
, &intval
) == 0) {
3788 if (intval
== ZFS_ACL_PASSTHROUGH_X
&&
3789 zfs_earlier_version(dsname
,
3790 SPA_VERSION_PASSTHROUGH_X
))
3791 return (SET_ERROR(ENOTSUP
));
3798 return (zfs_secpolicy_setprop(dsname
, prop
, pair
, CRED()));
3802 * Removes properties from the given props list that fail permission checks
3803 * needed to clear them and to restore them in case of a receive error. For each
3804 * property, make sure we have both set and inherit permissions.
3806 * Returns the first error encountered if any permission checks fail. If the
3807 * caller provides a non-NULL errlist, it also gives the complete list of names
3808 * of all the properties that failed a permission check along with the
3809 * corresponding error numbers. The caller is responsible for freeing the
3812 * If every property checks out successfully, zero is returned and the list
3813 * pointed at by errlist is NULL.
3816 zfs_check_clearable(char *dataset
, nvlist_t
*props
, nvlist_t
**errlist
)
3819 nvpair_t
*pair
, *next_pair
;
3826 VERIFY(nvlist_alloc(&errors
, NV_UNIQUE_NAME
, KM_SLEEP
) == 0);
3828 zc
= kmem_alloc(sizeof (zfs_cmd_t
), KM_SLEEP
| KM_NODEBUG
);
3829 (void) strcpy(zc
->zc_name
, dataset
);
3830 pair
= nvlist_next_nvpair(props
, NULL
);
3831 while (pair
!= NULL
) {
3832 next_pair
= nvlist_next_nvpair(props
, pair
);
3834 (void) strcpy(zc
->zc_value
, nvpair_name(pair
));
3835 if ((err
= zfs_check_settable(dataset
, pair
, CRED())) != 0 ||
3836 (err
= zfs_secpolicy_inherit_prop(zc
, NULL
, CRED())) != 0) {
3837 VERIFY(nvlist_remove_nvpair(props
, pair
) == 0);
3838 VERIFY(nvlist_add_int32(errors
,
3839 zc
->zc_value
, err
) == 0);
3843 kmem_free(zc
, sizeof (zfs_cmd_t
));
3845 if ((pair
= nvlist_next_nvpair(errors
, NULL
)) == NULL
) {
3846 nvlist_free(errors
);
3849 VERIFY(nvpair_value_int32(pair
, &rv
) == 0);
3852 if (errlist
== NULL
)
3853 nvlist_free(errors
);
3861 propval_equals(nvpair_t
*p1
, nvpair_t
*p2
)
3863 if (nvpair_type(p1
) == DATA_TYPE_NVLIST
) {
3864 /* dsl_prop_get_all_impl() format */
3866 VERIFY(nvpair_value_nvlist(p1
, &attrs
) == 0);
3867 VERIFY(nvlist_lookup_nvpair(attrs
, ZPROP_VALUE
,
3871 if (nvpair_type(p2
) == DATA_TYPE_NVLIST
) {
3873 VERIFY(nvpair_value_nvlist(p2
, &attrs
) == 0);
3874 VERIFY(nvlist_lookup_nvpair(attrs
, ZPROP_VALUE
,
3878 if (nvpair_type(p1
) != nvpair_type(p2
))
3881 if (nvpair_type(p1
) == DATA_TYPE_STRING
) {
3882 char *valstr1
, *valstr2
;
3884 VERIFY(nvpair_value_string(p1
, (char **)&valstr1
) == 0);
3885 VERIFY(nvpair_value_string(p2
, (char **)&valstr2
) == 0);
3886 return (strcmp(valstr1
, valstr2
) == 0);
3888 uint64_t intval1
, intval2
;
3890 VERIFY(nvpair_value_uint64(p1
, &intval1
) == 0);
3891 VERIFY(nvpair_value_uint64(p2
, &intval2
) == 0);
3892 return (intval1
== intval2
);
3897 * Remove properties from props if they are not going to change (as determined
3898 * by comparison with origprops). Remove them from origprops as well, since we
3899 * do not need to clear or restore properties that won't change.
3902 props_reduce(nvlist_t
*props
, nvlist_t
*origprops
)
3904 nvpair_t
*pair
, *next_pair
;
3906 if (origprops
== NULL
)
3907 return; /* all props need to be received */
3909 pair
= nvlist_next_nvpair(props
, NULL
);
3910 while (pair
!= NULL
) {
3911 const char *propname
= nvpair_name(pair
);
3914 next_pair
= nvlist_next_nvpair(props
, pair
);
3916 if ((nvlist_lookup_nvpair(origprops
, propname
,
3917 &match
) != 0) || !propval_equals(pair
, match
))
3918 goto next
; /* need to set received value */
3920 /* don't clear the existing received value */
3921 (void) nvlist_remove_nvpair(origprops
, match
);
3922 /* don't bother receiving the property */
3923 (void) nvlist_remove_nvpair(props
, pair
);
3930 static boolean_t zfs_ioc_recv_inject_err
;
3935 * zc_name name of containing filesystem
3936 * zc_nvlist_src{_size} nvlist of properties to apply
3937 * zc_value name of snapshot to create
3938 * zc_string name of clone origin (if DRR_FLAG_CLONE)
3939 * zc_cookie file descriptor to recv from
3940 * zc_begin_record the BEGIN record of the stream (not byteswapped)
3941 * zc_guid force flag
3942 * zc_cleanup_fd cleanup-on-exit file descriptor
3943 * zc_action_handle handle for this guid/ds mapping (or zero on first call)
3946 * zc_cookie number of bytes read
3947 * zc_nvlist_dst{_size} error for each unapplied received property
3948 * zc_obj zprop_errflags_t
3949 * zc_action_handle handle for this guid/ds mapping
3952 zfs_ioc_recv(zfs_cmd_t
*zc
)
3955 dmu_recv_cookie_t drc
;
3956 boolean_t force
= (boolean_t
)zc
->zc_guid
;
3959 int props_error
= 0;
3962 nvlist_t
*props
= NULL
; /* sent properties */
3963 nvlist_t
*origprops
= NULL
; /* existing properties */
3964 char *origin
= NULL
;
3966 char tofs
[ZFS_MAXNAMELEN
];
3967 boolean_t first_recvd_props
= B_FALSE
;
3969 if (dataset_namecheck(zc
->zc_value
, NULL
, NULL
) != 0 ||
3970 strchr(zc
->zc_value
, '@') == NULL
||
3971 strchr(zc
->zc_value
, '%'))
3972 return (SET_ERROR(EINVAL
));
3974 (void) strcpy(tofs
, zc
->zc_value
);
3975 tosnap
= strchr(tofs
, '@');
3978 if (zc
->zc_nvlist_src
!= 0 &&
3979 (error
= get_nvlist(zc
->zc_nvlist_src
, zc
->zc_nvlist_src_size
,
3980 zc
->zc_iflags
, &props
)) != 0)
3987 return (SET_ERROR(EBADF
));
3990 VERIFY(nvlist_alloc(&errors
, NV_UNIQUE_NAME
, KM_SLEEP
) == 0);
3992 if (zc
->zc_string
[0])
3993 origin
= zc
->zc_string
;
3995 error
= dmu_recv_begin(tofs
, tosnap
,
3996 &zc
->zc_begin_record
, force
, origin
, &drc
);
4001 * Set properties before we receive the stream so that they are applied
4002 * to the new data. Note that we must call dmu_recv_stream() if
4003 * dmu_recv_begin() succeeds.
4005 if (props
!= NULL
&& !drc
.drc_newfs
) {
4006 if (spa_version(dsl_dataset_get_spa(drc
.drc_ds
)) >=
4007 SPA_VERSION_RECVD_PROPS
&&
4008 !dsl_prop_get_hasrecvd(tofs
))
4009 first_recvd_props
= B_TRUE
;
4012 * If new received properties are supplied, they are to
4013 * completely replace the existing received properties, so stash
4014 * away the existing ones.
4016 if (dsl_prop_get_received(tofs
, &origprops
) == 0) {
4017 nvlist_t
*errlist
= NULL
;
4019 * Don't bother writing a property if its value won't
4020 * change (and avoid the unnecessary security checks).
4022 * The first receive after SPA_VERSION_RECVD_PROPS is a
4023 * special case where we blow away all local properties
4026 if (!first_recvd_props
)
4027 props_reduce(props
, origprops
);
4028 if (zfs_check_clearable(tofs
, origprops
, &errlist
) != 0)
4029 (void) nvlist_merge(errors
, errlist
, 0);
4030 nvlist_free(errlist
);
4032 if (clear_received_props(tofs
, origprops
,
4033 first_recvd_props
? NULL
: props
) != 0)
4034 zc
->zc_obj
|= ZPROP_ERR_NOCLEAR
;
4036 zc
->zc_obj
|= ZPROP_ERR_NOCLEAR
;
4040 if (props
!= NULL
) {
4041 props_error
= dsl_prop_set_hasrecvd(tofs
);
4043 if (props_error
== 0) {
4044 (void) zfs_set_prop_nvlist(tofs
, ZPROP_SRC_RECEIVED
,
4049 if (zc
->zc_nvlist_dst_size
!= 0 &&
4050 (nvlist_smush(errors
, zc
->zc_nvlist_dst_size
) != 0 ||
4051 put_nvlist(zc
, errors
) != 0)) {
4053 * Caller made zc->zc_nvlist_dst less than the minimum expected
4054 * size or supplied an invalid address.
4056 props_error
= SET_ERROR(EINVAL
);
4060 error
= dmu_recv_stream(&drc
, fp
->f_vnode
, &off
, zc
->zc_cleanup_fd
,
4061 &zc
->zc_action_handle
);
4064 zfs_sb_t
*zsb
= NULL
;
4066 if (get_zfs_sb(tofs
, &zsb
) == 0) {
4070 error
= zfs_suspend_fs(zsb
);
4072 * If the suspend fails, then the recv_end will
4073 * likely also fail, and clean up after itself.
4075 end_err
= dmu_recv_end(&drc
, zsb
);
4077 error
= zfs_resume_fs(zsb
, tofs
);
4078 error
= error
? error
: end_err
;
4079 deactivate_super(zsb
->z_sb
);
4081 error
= dmu_recv_end(&drc
, NULL
);
4085 zc
->zc_cookie
= off
- fp
->f_offset
;
4086 if (VOP_SEEK(fp
->f_vnode
, fp
->f_offset
, &off
, NULL
) == 0)
4090 if (zfs_ioc_recv_inject_err
) {
4091 zfs_ioc_recv_inject_err
= B_FALSE
;
4098 zvol_create_minors(tofs
);
4102 * On error, restore the original props.
4104 if (error
!= 0 && props
!= NULL
&& !drc
.drc_newfs
) {
4105 if (clear_received_props(tofs
, props
, NULL
) != 0) {
4107 * We failed to clear the received properties.
4108 * Since we may have left a $recvd value on the
4109 * system, we can't clear the $hasrecvd flag.
4111 zc
->zc_obj
|= ZPROP_ERR_NORESTORE
;
4112 } else if (first_recvd_props
) {
4113 dsl_prop_unset_hasrecvd(tofs
);
4116 if (origprops
== NULL
&& !drc
.drc_newfs
) {
4117 /* We failed to stash the original properties. */
4118 zc
->zc_obj
|= ZPROP_ERR_NORESTORE
;
4122 * dsl_props_set() will not convert RECEIVED to LOCAL on or
4123 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL
4124 * explictly if we're restoring local properties cleared in the
4125 * first new-style receive.
4127 if (origprops
!= NULL
&&
4128 zfs_set_prop_nvlist(tofs
, (first_recvd_props
?
4129 ZPROP_SRC_LOCAL
: ZPROP_SRC_RECEIVED
),
4130 origprops
, NULL
) != 0) {
4132 * We stashed the original properties but failed to
4135 zc
->zc_obj
|= ZPROP_ERR_NORESTORE
;
4140 nvlist_free(origprops
);
4141 nvlist_free(errors
);
4145 error
= props_error
;
4152 * zc_name name of snapshot to send
4153 * zc_cookie file descriptor to send stream to
4154 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj)
4155 * zc_sendobj objsetid of snapshot to send
4156 * zc_fromobj objsetid of incremental fromsnap (may be zero)
4157 * zc_guid if set, estimate size of stream only. zc_cookie is ignored.
4158 * output size in zc_objset_type.
4159 * zc_flags if =1, WRITE_EMBEDDED records are permitted
4162 * zc_objset_type estimated size, if zc_guid is set
4165 zfs_ioc_send(zfs_cmd_t
*zc
)
4169 boolean_t estimate
= (zc
->zc_guid
!= 0);
4170 boolean_t embedok
= (zc
->zc_flags
& 0x1);
4172 if (zc
->zc_obj
!= 0) {
4174 dsl_dataset_t
*tosnap
;
4176 error
= dsl_pool_hold(zc
->zc_name
, FTAG
, &dp
);
4180 error
= dsl_dataset_hold_obj(dp
, zc
->zc_sendobj
, FTAG
, &tosnap
);
4182 dsl_pool_rele(dp
, FTAG
);
4186 if (dsl_dir_is_clone(tosnap
->ds_dir
))
4187 zc
->zc_fromobj
= tosnap
->ds_dir
->dd_phys
->dd_origin_obj
;
4188 dsl_dataset_rele(tosnap
, FTAG
);
4189 dsl_pool_rele(dp
, FTAG
);
4194 dsl_dataset_t
*tosnap
;
4195 dsl_dataset_t
*fromsnap
= NULL
;
4197 error
= dsl_pool_hold(zc
->zc_name
, FTAG
, &dp
);
4201 error
= dsl_dataset_hold_obj(dp
, zc
->zc_sendobj
, FTAG
, &tosnap
);
4203 dsl_pool_rele(dp
, FTAG
);
4207 if (zc
->zc_fromobj
!= 0) {
4208 error
= dsl_dataset_hold_obj(dp
, zc
->zc_fromobj
,
4211 dsl_dataset_rele(tosnap
, FTAG
);
4212 dsl_pool_rele(dp
, FTAG
);
4217 error
= dmu_send_estimate(tosnap
, fromsnap
,
4218 &zc
->zc_objset_type
);
4220 if (fromsnap
!= NULL
)
4221 dsl_dataset_rele(fromsnap
, FTAG
);
4222 dsl_dataset_rele(tosnap
, FTAG
);
4223 dsl_pool_rele(dp
, FTAG
);
4225 file_t
*fp
= getf(zc
->zc_cookie
);
4227 return (SET_ERROR(EBADF
));
4230 error
= dmu_send_obj(zc
->zc_name
, zc
->zc_sendobj
,
4231 zc
->zc_fromobj
, embedok
, zc
->zc_cookie
, fp
->f_vnode
, &off
);
4233 if (VOP_SEEK(fp
->f_vnode
, fp
->f_offset
, &off
, NULL
) == 0)
4235 releasef(zc
->zc_cookie
);
4242 * zc_name name of snapshot on which to report progress
4243 * zc_cookie file descriptor of send stream
4246 * zc_cookie number of bytes written in send stream thus far
4249 zfs_ioc_send_progress(zfs_cmd_t
*zc
)
4253 dmu_sendarg_t
*dsp
= NULL
;
4256 error
= dsl_pool_hold(zc
->zc_name
, FTAG
, &dp
);
4260 error
= dsl_dataset_hold(dp
, zc
->zc_name
, FTAG
, &ds
);
4262 dsl_pool_rele(dp
, FTAG
);
4266 mutex_enter(&ds
->ds_sendstream_lock
);
4269 * Iterate over all the send streams currently active on this dataset.
4270 * If there's one which matches the specified file descriptor _and_ the
4271 * stream was started by the current process, return the progress of
4275 for (dsp
= list_head(&ds
->ds_sendstreams
); dsp
!= NULL
;
4276 dsp
= list_next(&ds
->ds_sendstreams
, dsp
)) {
4277 if (dsp
->dsa_outfd
== zc
->zc_cookie
&&
4278 dsp
->dsa_proc
->group_leader
== curproc
->group_leader
)
4283 zc
->zc_cookie
= *(dsp
->dsa_off
);
4285 error
= SET_ERROR(ENOENT
);
4287 mutex_exit(&ds
->ds_sendstream_lock
);
4288 dsl_dataset_rele(ds
, FTAG
);
4289 dsl_pool_rele(dp
, FTAG
);
4294 zfs_ioc_inject_fault(zfs_cmd_t
*zc
)
4298 error
= zio_inject_fault(zc
->zc_name
, (int)zc
->zc_guid
, &id
,
4299 &zc
->zc_inject_record
);
4302 zc
->zc_guid
= (uint64_t)id
;
4308 zfs_ioc_clear_fault(zfs_cmd_t
*zc
)
4310 return (zio_clear_fault((int)zc
->zc_guid
));
4314 zfs_ioc_inject_list_next(zfs_cmd_t
*zc
)
4316 int id
= (int)zc
->zc_guid
;
4319 error
= zio_inject_list_next(&id
, zc
->zc_name
, sizeof (zc
->zc_name
),
4320 &zc
->zc_inject_record
);
4328 zfs_ioc_error_log(zfs_cmd_t
*zc
)
4332 size_t count
= (size_t)zc
->zc_nvlist_dst_size
;
4334 if ((error
= spa_open(zc
->zc_name
, &spa
, FTAG
)) != 0)
4337 error
= spa_get_errlog(spa
, (void *)(uintptr_t)zc
->zc_nvlist_dst
,
4340 zc
->zc_nvlist_dst_size
= count
;
4342 zc
->zc_nvlist_dst_size
= spa_get_errlog_size(spa
);
4344 spa_close(spa
, FTAG
);
4350 zfs_ioc_clear(zfs_cmd_t
*zc
)
4357 * On zpool clear we also fix up missing slogs
4359 mutex_enter(&spa_namespace_lock
);
4360 spa
= spa_lookup(zc
->zc_name
);
4362 mutex_exit(&spa_namespace_lock
);
4363 return (SET_ERROR(EIO
));
4365 if (spa_get_log_state(spa
) == SPA_LOG_MISSING
) {
4366 /* we need to let spa_open/spa_load clear the chains */
4367 spa_set_log_state(spa
, SPA_LOG_CLEAR
);
4369 spa
->spa_last_open_failed
= 0;
4370 mutex_exit(&spa_namespace_lock
);
4372 if (zc
->zc_cookie
& ZPOOL_NO_REWIND
) {
4373 error
= spa_open(zc
->zc_name
, &spa
, FTAG
);
4376 nvlist_t
*config
= NULL
;
4378 if (zc
->zc_nvlist_src
== 0)
4379 return (SET_ERROR(EINVAL
));
4381 if ((error
= get_nvlist(zc
->zc_nvlist_src
,
4382 zc
->zc_nvlist_src_size
, zc
->zc_iflags
, &policy
)) == 0) {
4383 error
= spa_open_rewind(zc
->zc_name
, &spa
, FTAG
,
4385 if (config
!= NULL
) {
4388 if ((err
= put_nvlist(zc
, config
)) != 0)
4390 nvlist_free(config
);
4392 nvlist_free(policy
);
4399 spa_vdev_state_enter(spa
, SCL_NONE
);
4401 if (zc
->zc_guid
== 0) {
4404 vd
= spa_lookup_by_guid(spa
, zc
->zc_guid
, B_TRUE
);
4406 (void) spa_vdev_state_exit(spa
, NULL
, ENODEV
);
4407 spa_close(spa
, FTAG
);
4408 return (SET_ERROR(ENODEV
));
4412 vdev_clear(spa
, vd
);
4414 (void) spa_vdev_state_exit(spa
, NULL
, 0);
4417 * Resume any suspended I/Os.
4419 if (zio_resume(spa
) != 0)
4420 error
= SET_ERROR(EIO
);
4422 spa_close(spa
, FTAG
);
4428 zfs_ioc_pool_reopen(zfs_cmd_t
*zc
)
4433 error
= spa_open(zc
->zc_name
, &spa
, FTAG
);
4437 spa_vdev_state_enter(spa
, SCL_NONE
);
4440 * If a resilver is already in progress then set the
4441 * spa_scrub_reopen flag to B_TRUE so that we don't restart
4442 * the scan as a side effect of the reopen. Otherwise, let
4443 * vdev_open() decided if a resilver is required.
4445 spa
->spa_scrub_reopen
= dsl_scan_resilvering(spa
->spa_dsl_pool
);
4446 vdev_reopen(spa
->spa_root_vdev
);
4447 spa
->spa_scrub_reopen
= B_FALSE
;
4449 (void) spa_vdev_state_exit(spa
, NULL
, 0);
4450 spa_close(spa
, FTAG
);
4455 * zc_name name of filesystem
4456 * zc_value name of origin snapshot
4459 * zc_string name of conflicting snapshot, if there is one
4462 zfs_ioc_promote(zfs_cmd_t
*zc
)
4467 * We don't need to unmount *all* the origin fs's snapshots, but
4470 cp
= strchr(zc
->zc_value
, '@');
4473 (void) dmu_objset_find(zc
->zc_value
,
4474 zfs_unmount_snap_cb
, NULL
, DS_FIND_SNAPSHOTS
);
4475 return (dsl_dataset_promote(zc
->zc_name
, zc
->zc_string
));
4479 * Retrieve a single {user|group}{used|quota}@... property.
4482 * zc_name name of filesystem
4483 * zc_objset_type zfs_userquota_prop_t
4484 * zc_value domain name (eg. "S-1-234-567-89")
4485 * zc_guid RID/UID/GID
4488 * zc_cookie property value
4491 zfs_ioc_userspace_one(zfs_cmd_t
*zc
)
4496 if (zc
->zc_objset_type
>= ZFS_NUM_USERQUOTA_PROPS
)
4497 return (SET_ERROR(EINVAL
));
4499 error
= zfs_sb_hold(zc
->zc_name
, FTAG
, &zsb
, B_FALSE
);
4503 error
= zfs_userspace_one(zsb
,
4504 zc
->zc_objset_type
, zc
->zc_value
, zc
->zc_guid
, &zc
->zc_cookie
);
4505 zfs_sb_rele(zsb
, FTAG
);
4512 * zc_name name of filesystem
4513 * zc_cookie zap cursor
4514 * zc_objset_type zfs_userquota_prop_t
4515 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist)
4518 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t)
4519 * zc_cookie zap cursor
4522 zfs_ioc_userspace_many(zfs_cmd_t
*zc
)
4525 int bufsize
= zc
->zc_nvlist_dst_size
;
4530 return (SET_ERROR(ENOMEM
));
4532 error
= zfs_sb_hold(zc
->zc_name
, FTAG
, &zsb
, B_FALSE
);
4536 buf
= vmem_alloc(bufsize
, KM_SLEEP
);
4538 error
= zfs_userspace_many(zsb
, zc
->zc_objset_type
, &zc
->zc_cookie
,
4539 buf
, &zc
->zc_nvlist_dst_size
);
4542 error
= xcopyout(buf
,
4543 (void *)(uintptr_t)zc
->zc_nvlist_dst
,
4544 zc
->zc_nvlist_dst_size
);
4546 vmem_free(buf
, bufsize
);
4547 zfs_sb_rele(zsb
, FTAG
);
4554 * zc_name name of filesystem
4560 zfs_ioc_userspace_upgrade(zfs_cmd_t
*zc
)
4566 if (get_zfs_sb(zc
->zc_name
, &zsb
) == 0) {
4567 if (!dmu_objset_userused_enabled(zsb
->z_os
)) {
4569 * If userused is not enabled, it may be because the
4570 * objset needs to be closed & reopened (to grow the
4571 * objset_phys_t). Suspend/resume the fs will do that.
4573 error
= zfs_suspend_fs(zsb
);
4575 dmu_objset_refresh_ownership(zsb
->z_os
,
4577 error
= zfs_resume_fs(zsb
, zc
->zc_name
);
4581 error
= dmu_objset_userspace_upgrade(zsb
->z_os
);
4582 deactivate_super(zsb
->z_sb
);
4584 /* XXX kind of reading contents without owning */
4585 error
= dmu_objset_hold(zc
->zc_name
, FTAG
, &os
);
4589 error
= dmu_objset_userspace_upgrade(os
);
4590 dmu_objset_rele(os
, FTAG
);
4597 zfs_ioc_share(zfs_cmd_t
*zc
)
4599 return (SET_ERROR(ENOSYS
));
4602 ace_t full_access
[] = {
4603 {(uid_t
)-1, ACE_ALL_PERMS
, ACE_EVERYONE
, 0}
4608 * zc_name name of containing filesystem
4609 * zc_obj object # beyond which we want next in-use object #
4612 * zc_obj next in-use object #
4615 zfs_ioc_next_obj(zfs_cmd_t
*zc
)
4617 objset_t
*os
= NULL
;
4620 error
= dmu_objset_hold(zc
->zc_name
, FTAG
, &os
);
4624 error
= dmu_object_next(os
, &zc
->zc_obj
, B_FALSE
,
4625 os
->os_dsl_dataset
->ds_phys
->ds_prev_snap_txg
);
4627 dmu_objset_rele(os
, FTAG
);
4633 * zc_name name of filesystem
4634 * zc_value prefix name for snapshot
4635 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
4638 * zc_value short name of new snapshot
4641 zfs_ioc_tmp_snapshot(zfs_cmd_t
*zc
)
4648 error
= zfs_onexit_fd_hold(zc
->zc_cleanup_fd
, &minor
);
4652 snap_name
= kmem_asprintf("%s-%016llx", zc
->zc_value
,
4653 (u_longlong_t
)ddi_get_lbolt64());
4654 hold_name
= kmem_asprintf("%%%s", zc
->zc_value
);
4656 error
= dsl_dataset_snapshot_tmp(zc
->zc_name
, snap_name
, minor
,
4659 (void) strcpy(zc
->zc_value
, snap_name
);
4662 zfs_onexit_fd_rele(zc
->zc_cleanup_fd
);
4668 * zc_name name of "to" snapshot
4669 * zc_value name of "from" snapshot
4670 * zc_cookie file descriptor to write diff data on
4673 * dmu_diff_record_t's to the file descriptor
4676 zfs_ioc_diff(zfs_cmd_t
*zc
)
4682 fp
= getf(zc
->zc_cookie
);
4684 return (SET_ERROR(EBADF
));
4688 error
= dmu_diff(zc
->zc_name
, zc
->zc_value
, fp
->f_vnode
, &off
);
4690 if (VOP_SEEK(fp
->f_vnode
, fp
->f_offset
, &off
, NULL
) == 0)
4692 releasef(zc
->zc_cookie
);
4698 * Remove all ACL files in shares dir
4700 #ifdef HAVE_SMB_SHARE
4702 zfs_smb_acl_purge(znode_t
*dzp
)
4705 zap_attribute_t zap
;
4706 zfs_sb_t
*zsb
= ZTOZSB(dzp
);
4709 for (zap_cursor_init(&zc
, zsb
->z_os
, dzp
->z_id
);
4710 (error
= zap_cursor_retrieve(&zc
, &zap
)) == 0;
4711 zap_cursor_advance(&zc
)) {
4712 if ((error
= VOP_REMOVE(ZTOV(dzp
), zap
.za_name
, kcred
,
4716 zap_cursor_fini(&zc
);
4719 #endif /* HAVE_SMB_SHARE */
4722 zfs_ioc_smb_acl(zfs_cmd_t
*zc
)
4724 #ifdef HAVE_SMB_SHARE
4727 vnode_t
*resourcevp
= NULL
;
4736 if ((error
= lookupname(zc
->zc_value
, UIO_SYSSPACE
,
4737 NO_FOLLOW
, NULL
, &vp
)) != 0)
4740 /* Now make sure mntpnt and dataset are ZFS */
4742 if (vp
->v_vfsp
->vfs_fstype
!= zfsfstype
||
4743 (strcmp((char *)refstr_value(vp
->v_vfsp
->vfs_resource
),
4744 zc
->zc_name
) != 0)) {
4746 return (SET_ERROR(EINVAL
));
4754 * Create share dir if its missing.
4756 mutex_enter(&zsb
->z_lock
);
4757 if (zsb
->z_shares_dir
== 0) {
4760 tx
= dmu_tx_create(zsb
->z_os
);
4761 dmu_tx_hold_zap(tx
, MASTER_NODE_OBJ
, TRUE
,
4763 dmu_tx_hold_zap(tx
, DMU_NEW_OBJECT
, FALSE
, NULL
);
4764 error
= dmu_tx_assign(tx
, TXG_WAIT
);
4768 error
= zfs_create_share_dir(zsb
, tx
);
4772 mutex_exit(&zsb
->z_lock
);
4778 mutex_exit(&zsb
->z_lock
);
4780 ASSERT(zsb
->z_shares_dir
);
4781 if ((error
= zfs_zget(zsb
, zsb
->z_shares_dir
, &sharedir
)) != 0) {
4787 switch (zc
->zc_cookie
) {
4788 case ZFS_SMB_ACL_ADD
:
4789 vattr
.va_mask
= AT_MODE
|AT_UID
|AT_GID
|AT_TYPE
;
4790 vattr
.va_mode
= S_IFREG
|0777;
4794 vsec
.vsa_mask
= VSA_ACE
;
4795 vsec
.vsa_aclentp
= &full_access
;
4796 vsec
.vsa_aclentsz
= sizeof (full_access
);
4797 vsec
.vsa_aclcnt
= 1;
4799 error
= VOP_CREATE(ZTOV(sharedir
), zc
->zc_string
,
4800 &vattr
, EXCL
, 0, &resourcevp
, kcred
, 0, NULL
, &vsec
);
4802 VN_RELE(resourcevp
);
4805 case ZFS_SMB_ACL_REMOVE
:
4806 error
= VOP_REMOVE(ZTOV(sharedir
), zc
->zc_string
, kcred
,
4810 case ZFS_SMB_ACL_RENAME
:
4811 if ((error
= get_nvlist(zc
->zc_nvlist_src
,
4812 zc
->zc_nvlist_src_size
, zc
->zc_iflags
, &nvlist
)) != 0) {
4817 if (nvlist_lookup_string(nvlist
, ZFS_SMB_ACL_SRC
, &src
) ||
4818 nvlist_lookup_string(nvlist
, ZFS_SMB_ACL_TARGET
,
4821 VN_RELE(ZTOV(sharedir
));
4823 nvlist_free(nvlist
);
4826 error
= VOP_RENAME(ZTOV(sharedir
), src
, ZTOV(sharedir
), target
,
4828 nvlist_free(nvlist
);
4831 case ZFS_SMB_ACL_PURGE
:
4832 error
= zfs_smb_acl_purge(sharedir
);
4836 error
= SET_ERROR(EINVAL
);
4841 VN_RELE(ZTOV(sharedir
));
4847 return (SET_ERROR(ENOTSUP
));
4848 #endif /* HAVE_SMB_SHARE */
4853 * "holds" -> { snapname -> holdname (string), ... }
4854 * (optional) "cleanup_fd" -> fd (int32)
4858 * snapname -> error value (int32)
4864 zfs_ioc_hold(const char *pool
, nvlist_t
*args
, nvlist_t
*errlist
)
4867 int cleanup_fd
= -1;
4871 error
= nvlist_lookup_nvlist(args
, "holds", &holds
);
4873 return (SET_ERROR(EINVAL
));
4875 if (nvlist_lookup_int32(args
, "cleanup_fd", &cleanup_fd
) == 0) {
4876 error
= zfs_onexit_fd_hold(cleanup_fd
, &minor
);
4881 error
= dsl_dataset_user_hold(holds
, minor
, errlist
);
4883 zfs_onexit_fd_rele(cleanup_fd
);
4888 * innvl is not used.
4891 * holdname -> time added (uint64 seconds since epoch)
4897 zfs_ioc_get_holds(const char *snapname
, nvlist_t
*args
, nvlist_t
*outnvl
)
4899 return (dsl_dataset_get_holds(snapname
, outnvl
));
4904 * snapname -> { holdname, ... }
4909 * snapname -> error value (int32)
4915 zfs_ioc_release(const char *pool
, nvlist_t
*holds
, nvlist_t
*errlist
)
4917 return (dsl_dataset_user_release(holds
, errlist
));
4922 * zc_guid flags (ZEVENT_NONBLOCK)
4923 * zc_cleanup_fd zevent file descriptor
4926 * zc_nvlist_dst next nvlist event
4927 * zc_cookie dropped events since last get
4930 zfs_ioc_events_next(zfs_cmd_t
*zc
)
4933 nvlist_t
*event
= NULL
;
4935 uint64_t dropped
= 0;
4938 error
= zfs_zevent_fd_hold(zc
->zc_cleanup_fd
, &minor
, &ze
);
4943 error
= zfs_zevent_next(ze
, &event
,
4944 &zc
->zc_nvlist_dst_size
, &dropped
);
4945 if (event
!= NULL
) {
4946 zc
->zc_cookie
= dropped
;
4947 error
= put_nvlist(zc
, event
);
4951 if (zc
->zc_guid
& ZEVENT_NONBLOCK
)
4954 if ((error
== 0) || (error
!= ENOENT
))
4957 error
= zfs_zevent_wait(ze
);
4962 zfs_zevent_fd_rele(zc
->zc_cleanup_fd
);
4969 * zc_cookie cleared events count
4972 zfs_ioc_events_clear(zfs_cmd_t
*zc
)
4976 zfs_zevent_drain_all(&count
);
4977 zc
->zc_cookie
= count
;
4984 * zc_guid eid | ZEVENT_SEEK_START | ZEVENT_SEEK_END
4985 * zc_cleanup zevent file descriptor
4988 zfs_ioc_events_seek(zfs_cmd_t
*zc
)
4994 error
= zfs_zevent_fd_hold(zc
->zc_cleanup_fd
, &minor
, &ze
);
4998 error
= zfs_zevent_seek(ze
, zc
->zc_guid
);
4999 zfs_zevent_fd_rele(zc
->zc_cleanup_fd
);
5006 * zc_name name of new filesystem or snapshot
5007 * zc_value full name of old snapshot
5010 * zc_cookie space in bytes
5011 * zc_objset_type compressed space in bytes
5012 * zc_perm_action uncompressed space in bytes
5015 zfs_ioc_space_written(zfs_cmd_t
*zc
)
5019 dsl_dataset_t
*new, *old
;
5021 error
= dsl_pool_hold(zc
->zc_name
, FTAG
, &dp
);
5024 error
= dsl_dataset_hold(dp
, zc
->zc_name
, FTAG
, &new);
5026 dsl_pool_rele(dp
, FTAG
);
5029 error
= dsl_dataset_hold(dp
, zc
->zc_value
, FTAG
, &old
);
5031 dsl_dataset_rele(new, FTAG
);
5032 dsl_pool_rele(dp
, FTAG
);
5036 error
= dsl_dataset_space_written(old
, new, &zc
->zc_cookie
,
5037 &zc
->zc_objset_type
, &zc
->zc_perm_action
);
5038 dsl_dataset_rele(old
, FTAG
);
5039 dsl_dataset_rele(new, FTAG
);
5040 dsl_pool_rele(dp
, FTAG
);
5046 * "firstsnap" -> snapshot name
5050 * "used" -> space in bytes
5051 * "compressed" -> compressed space in bytes
5052 * "uncompressed" -> uncompressed space in bytes
5056 zfs_ioc_space_snaps(const char *lastsnap
, nvlist_t
*innvl
, nvlist_t
*outnvl
)
5060 dsl_dataset_t
*new, *old
;
5062 uint64_t used
, comp
, uncomp
;
5064 if (nvlist_lookup_string(innvl
, "firstsnap", &firstsnap
) != 0)
5065 return (SET_ERROR(EINVAL
));
5067 error
= dsl_pool_hold(lastsnap
, FTAG
, &dp
);
5071 error
= dsl_dataset_hold(dp
, lastsnap
, FTAG
, &new);
5073 dsl_pool_rele(dp
, FTAG
);
5076 error
= dsl_dataset_hold(dp
, firstsnap
, FTAG
, &old
);
5078 dsl_dataset_rele(new, FTAG
);
5079 dsl_pool_rele(dp
, FTAG
);
5083 error
= dsl_dataset_space_wouldfree(old
, new, &used
, &comp
, &uncomp
);
5084 dsl_dataset_rele(old
, FTAG
);
5085 dsl_dataset_rele(new, FTAG
);
5086 dsl_pool_rele(dp
, FTAG
);
5087 fnvlist_add_uint64(outnvl
, "used", used
);
5088 fnvlist_add_uint64(outnvl
, "compressed", comp
);
5089 fnvlist_add_uint64(outnvl
, "uncompressed", uncomp
);
5095 * "fd" -> file descriptor to write stream to (int32)
5096 * (optional) "fromsnap" -> full snap name to send an incremental from
5097 * (optional) "embedok" -> (value ignored)
5098 * presence indicates DRR_WRITE_EMBEDDED records are permitted
5105 zfs_ioc_send_new(const char *snapname
, nvlist_t
*innvl
, nvlist_t
*outnvl
)
5109 char *fromname
= NULL
;
5114 error
= nvlist_lookup_int32(innvl
, "fd", &fd
);
5116 return (SET_ERROR(EINVAL
));
5118 (void) nvlist_lookup_string(innvl
, "fromsnap", &fromname
);
5120 embedok
= nvlist_exists(innvl
, "embedok");
5122 if ((fp
= getf(fd
)) == NULL
)
5123 return (SET_ERROR(EBADF
));
5126 error
= dmu_send(snapname
, fromname
, embedok
, fd
, fp
->f_vnode
, &off
);
5128 if (VOP_SEEK(fp
->f_vnode
, fp
->f_offset
, &off
, NULL
) == 0)
5136 * Determine approximately how large a zfs send stream will be -- the number
5137 * of bytes that will be written to the fd supplied to zfs_ioc_send_new().
5140 * (optional) "fromsnap" -> full snap name to send an incremental from
5144 * "space" -> bytes of space (uint64)
5148 zfs_ioc_send_space(const char *snapname
, nvlist_t
*innvl
, nvlist_t
*outnvl
)
5151 dsl_dataset_t
*fromsnap
= NULL
;
5152 dsl_dataset_t
*tosnap
;
5157 error
= dsl_pool_hold(snapname
, FTAG
, &dp
);
5161 error
= dsl_dataset_hold(dp
, snapname
, FTAG
, &tosnap
);
5163 dsl_pool_rele(dp
, FTAG
);
5167 error
= nvlist_lookup_string(innvl
, "fromsnap", &fromname
);
5169 error
= dsl_dataset_hold(dp
, fromname
, FTAG
, &fromsnap
);
5171 dsl_dataset_rele(tosnap
, FTAG
);
5172 dsl_pool_rele(dp
, FTAG
);
5177 error
= dmu_send_estimate(tosnap
, fromsnap
, &space
);
5178 fnvlist_add_uint64(outnvl
, "space", space
);
5180 if (fromsnap
!= NULL
)
5181 dsl_dataset_rele(fromsnap
, FTAG
);
5182 dsl_dataset_rele(tosnap
, FTAG
);
5183 dsl_pool_rele(dp
, FTAG
);
5188 static zfs_ioc_vec_t zfs_ioc_vec
[ZFS_IOC_LAST
- ZFS_IOC_FIRST
];
5191 zfs_ioctl_register_legacy(zfs_ioc_t ioc
, zfs_ioc_legacy_func_t
*func
,
5192 zfs_secpolicy_func_t
*secpolicy
, zfs_ioc_namecheck_t namecheck
,
5193 boolean_t log_history
, zfs_ioc_poolcheck_t pool_check
)
5195 zfs_ioc_vec_t
*vec
= &zfs_ioc_vec
[ioc
- ZFS_IOC_FIRST
];
5197 ASSERT3U(ioc
, >=, ZFS_IOC_FIRST
);
5198 ASSERT3U(ioc
, <, ZFS_IOC_LAST
);
5199 ASSERT3P(vec
->zvec_legacy_func
, ==, NULL
);
5200 ASSERT3P(vec
->zvec_func
, ==, NULL
);
5202 vec
->zvec_legacy_func
= func
;
5203 vec
->zvec_secpolicy
= secpolicy
;
5204 vec
->zvec_namecheck
= namecheck
;
5205 vec
->zvec_allow_log
= log_history
;
5206 vec
->zvec_pool_check
= pool_check
;
5210 * See the block comment at the beginning of this file for details on
5211 * each argument to this function.
5214 zfs_ioctl_register(const char *name
, zfs_ioc_t ioc
, zfs_ioc_func_t
*func
,
5215 zfs_secpolicy_func_t
*secpolicy
, zfs_ioc_namecheck_t namecheck
,
5216 zfs_ioc_poolcheck_t pool_check
, boolean_t smush_outnvlist
,
5217 boolean_t allow_log
)
5219 zfs_ioc_vec_t
*vec
= &zfs_ioc_vec
[ioc
- ZFS_IOC_FIRST
];
5221 ASSERT3U(ioc
, >=, ZFS_IOC_FIRST
);
5222 ASSERT3U(ioc
, <, ZFS_IOC_LAST
);
5223 ASSERT3P(vec
->zvec_legacy_func
, ==, NULL
);
5224 ASSERT3P(vec
->zvec_func
, ==, NULL
);
5226 /* if we are logging, the name must be valid */
5227 ASSERT(!allow_log
|| namecheck
!= NO_NAME
);
5229 vec
->zvec_name
= name
;
5230 vec
->zvec_func
= func
;
5231 vec
->zvec_secpolicy
= secpolicy
;
5232 vec
->zvec_namecheck
= namecheck
;
5233 vec
->zvec_pool_check
= pool_check
;
5234 vec
->zvec_smush_outnvlist
= smush_outnvlist
;
5235 vec
->zvec_allow_log
= allow_log
;
5239 zfs_ioctl_register_pool(zfs_ioc_t ioc
, zfs_ioc_legacy_func_t
*func
,
5240 zfs_secpolicy_func_t
*secpolicy
, boolean_t log_history
,
5241 zfs_ioc_poolcheck_t pool_check
)
5243 zfs_ioctl_register_legacy(ioc
, func
, secpolicy
,
5244 POOL_NAME
, log_history
, pool_check
);
5248 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc
, zfs_ioc_legacy_func_t
*func
,
5249 zfs_secpolicy_func_t
*secpolicy
, zfs_ioc_poolcheck_t pool_check
)
5251 zfs_ioctl_register_legacy(ioc
, func
, secpolicy
,
5252 DATASET_NAME
, B_FALSE
, pool_check
);
5256 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc
, zfs_ioc_legacy_func_t
*func
)
5258 zfs_ioctl_register_legacy(ioc
, func
, zfs_secpolicy_config
,
5259 POOL_NAME
, B_TRUE
, POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
);
5263 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc
, zfs_ioc_legacy_func_t
*func
,
5264 zfs_secpolicy_func_t
*secpolicy
)
5266 zfs_ioctl_register_legacy(ioc
, func
, secpolicy
,
5267 NO_NAME
, B_FALSE
, POOL_CHECK_NONE
);
5271 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc
,
5272 zfs_ioc_legacy_func_t
*func
, zfs_secpolicy_func_t
*secpolicy
)
5274 zfs_ioctl_register_legacy(ioc
, func
, secpolicy
,
5275 DATASET_NAME
, B_FALSE
, POOL_CHECK_SUSPENDED
);
5279 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc
, zfs_ioc_legacy_func_t
*func
)
5281 zfs_ioctl_register_dataset_read_secpolicy(ioc
, func
,
5282 zfs_secpolicy_read
);
5286 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc
, zfs_ioc_legacy_func_t
*func
,
5287 zfs_secpolicy_func_t
*secpolicy
)
5289 zfs_ioctl_register_legacy(ioc
, func
, secpolicy
,
5290 DATASET_NAME
, B_TRUE
, POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
);
5294 zfs_ioctl_init(void)
5296 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT
,
5297 zfs_ioc_snapshot
, zfs_secpolicy_snapshot
, POOL_NAME
,
5298 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
, B_TRUE
, B_TRUE
);
5300 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY
,
5301 zfs_ioc_log_history
, zfs_secpolicy_log_history
, NO_NAME
,
5302 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
, B_FALSE
, B_FALSE
);
5304 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS
,
5305 zfs_ioc_space_snaps
, zfs_secpolicy_read
, DATASET_NAME
,
5306 POOL_CHECK_SUSPENDED
, B_FALSE
, B_FALSE
);
5308 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW
,
5309 zfs_ioc_send_new
, zfs_secpolicy_send_new
, DATASET_NAME
,
5310 POOL_CHECK_SUSPENDED
, B_FALSE
, B_FALSE
);
5312 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE
,
5313 zfs_ioc_send_space
, zfs_secpolicy_read
, DATASET_NAME
,
5314 POOL_CHECK_SUSPENDED
, B_FALSE
, B_FALSE
);
5316 zfs_ioctl_register("create", ZFS_IOC_CREATE
,
5317 zfs_ioc_create
, zfs_secpolicy_create_clone
, DATASET_NAME
,
5318 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
, B_TRUE
, B_TRUE
);
5320 zfs_ioctl_register("clone", ZFS_IOC_CLONE
,
5321 zfs_ioc_clone
, zfs_secpolicy_create_clone
, DATASET_NAME
,
5322 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
, B_TRUE
, B_TRUE
);
5324 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS
,
5325 zfs_ioc_destroy_snaps
, zfs_secpolicy_destroy_snaps
, POOL_NAME
,
5326 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
, B_TRUE
, B_TRUE
);
5328 zfs_ioctl_register("hold", ZFS_IOC_HOLD
,
5329 zfs_ioc_hold
, zfs_secpolicy_hold
, POOL_NAME
,
5330 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
, B_TRUE
, B_TRUE
);
5331 zfs_ioctl_register("release", ZFS_IOC_RELEASE
,
5332 zfs_ioc_release
, zfs_secpolicy_release
, POOL_NAME
,
5333 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
, B_TRUE
, B_TRUE
);
5335 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS
,
5336 zfs_ioc_get_holds
, zfs_secpolicy_read
, DATASET_NAME
,
5337 POOL_CHECK_SUSPENDED
, B_FALSE
, B_FALSE
);
5339 zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK
,
5340 zfs_ioc_rollback
, zfs_secpolicy_rollback
, DATASET_NAME
,
5341 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
, B_FALSE
, B_TRUE
);
5343 zfs_ioctl_register("bookmark", ZFS_IOC_BOOKMARK
,
5344 zfs_ioc_bookmark
, zfs_secpolicy_bookmark
, POOL_NAME
,
5345 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
, B_TRUE
, B_TRUE
);
5347 zfs_ioctl_register("get_bookmarks", ZFS_IOC_GET_BOOKMARKS
,
5348 zfs_ioc_get_bookmarks
, zfs_secpolicy_read
, DATASET_NAME
,
5349 POOL_CHECK_SUSPENDED
, B_FALSE
, B_FALSE
);
5351 zfs_ioctl_register("destroy_bookmarks", ZFS_IOC_DESTROY_BOOKMARKS
,
5352 zfs_ioc_destroy_bookmarks
, zfs_secpolicy_destroy_bookmarks
,
5354 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
, B_TRUE
, B_TRUE
);
5356 /* IOCTLS that use the legacy function signature */
5358 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE
, zfs_ioc_pool_freeze
,
5359 zfs_secpolicy_config
, NO_NAME
, B_FALSE
, POOL_CHECK_READONLY
);
5361 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE
, zfs_ioc_pool_create
,
5362 zfs_secpolicy_config
, B_TRUE
, POOL_CHECK_NONE
);
5363 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN
,
5365 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE
,
5366 zfs_ioc_pool_upgrade
);
5367 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD
,
5369 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE
,
5370 zfs_ioc_vdev_remove
);
5371 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE
,
5372 zfs_ioc_vdev_set_state
);
5373 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH
,
5374 zfs_ioc_vdev_attach
);
5375 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH
,
5376 zfs_ioc_vdev_detach
);
5377 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH
,
5378 zfs_ioc_vdev_setpath
);
5379 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU
,
5380 zfs_ioc_vdev_setfru
);
5381 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS
,
5382 zfs_ioc_pool_set_props
);
5383 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT
,
5384 zfs_ioc_vdev_split
);
5385 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID
,
5386 zfs_ioc_pool_reguid
);
5388 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS
,
5389 zfs_ioc_pool_configs
, zfs_secpolicy_none
);
5390 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT
,
5391 zfs_ioc_pool_tryimport
, zfs_secpolicy_config
);
5392 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT
,
5393 zfs_ioc_inject_fault
, zfs_secpolicy_inject
);
5394 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT
,
5395 zfs_ioc_clear_fault
, zfs_secpolicy_inject
);
5396 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT
,
5397 zfs_ioc_inject_list_next
, zfs_secpolicy_inject
);
5400 * pool destroy, and export don't log the history as part of
5401 * zfsdev_ioctl, but rather zfs_ioc_pool_export
5402 * does the logging of those commands.
5404 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY
, zfs_ioc_pool_destroy
,
5405 zfs_secpolicy_config
, B_FALSE
, POOL_CHECK_NONE
);
5406 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT
, zfs_ioc_pool_export
,
5407 zfs_secpolicy_config
, B_FALSE
, POOL_CHECK_NONE
);
5409 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS
, zfs_ioc_pool_stats
,
5410 zfs_secpolicy_read
, B_FALSE
, POOL_CHECK_NONE
);
5411 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS
, zfs_ioc_pool_get_props
,
5412 zfs_secpolicy_read
, B_FALSE
, POOL_CHECK_NONE
);
5414 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG
, zfs_ioc_error_log
,
5415 zfs_secpolicy_inject
, B_FALSE
, POOL_CHECK_SUSPENDED
);
5416 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME
,
5417 zfs_ioc_dsobj_to_dsname
,
5418 zfs_secpolicy_diff
, B_FALSE
, POOL_CHECK_SUSPENDED
);
5419 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY
,
5420 zfs_ioc_pool_get_history
,
5421 zfs_secpolicy_config
, B_FALSE
, POOL_CHECK_SUSPENDED
);
5423 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT
, zfs_ioc_pool_import
,
5424 zfs_secpolicy_config
, B_TRUE
, POOL_CHECK_NONE
);
5426 zfs_ioctl_register_pool(ZFS_IOC_CLEAR
, zfs_ioc_clear
,
5427 zfs_secpolicy_config
, B_TRUE
, POOL_CHECK_NONE
);
5428 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN
, zfs_ioc_pool_reopen
,
5429 zfs_secpolicy_config
, B_TRUE
, POOL_CHECK_SUSPENDED
);
5431 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN
,
5432 zfs_ioc_space_written
);
5433 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS
,
5434 zfs_ioc_objset_recvd_props
);
5435 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ
,
5437 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL
,
5439 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS
,
5440 zfs_ioc_objset_stats
);
5441 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS
,
5442 zfs_ioc_objset_zplprops
);
5443 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT
,
5444 zfs_ioc_dataset_list_next
);
5445 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT
,
5446 zfs_ioc_snapshot_list_next
);
5447 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS
,
5448 zfs_ioc_send_progress
);
5450 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF
,
5451 zfs_ioc_diff
, zfs_secpolicy_diff
);
5452 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS
,
5453 zfs_ioc_obj_to_stats
, zfs_secpolicy_diff
);
5454 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH
,
5455 zfs_ioc_obj_to_path
, zfs_secpolicy_diff
);
5456 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE
,
5457 zfs_ioc_userspace_one
, zfs_secpolicy_userspace_one
);
5458 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY
,
5459 zfs_ioc_userspace_many
, zfs_secpolicy_userspace_many
);
5460 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND
,
5461 zfs_ioc_send
, zfs_secpolicy_send
);
5463 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP
, zfs_ioc_set_prop
,
5464 zfs_secpolicy_none
);
5465 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY
, zfs_ioc_destroy
,
5466 zfs_secpolicy_destroy
);
5467 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME
, zfs_ioc_rename
,
5468 zfs_secpolicy_rename
);
5469 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV
, zfs_ioc_recv
,
5470 zfs_secpolicy_recv
);
5471 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE
, zfs_ioc_promote
,
5472 zfs_secpolicy_promote
);
5473 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP
,
5474 zfs_ioc_inherit_prop
, zfs_secpolicy_inherit_prop
);
5475 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL
, zfs_ioc_set_fsacl
,
5476 zfs_secpolicy_set_fsacl
);
5478 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE
, zfs_ioc_share
,
5479 zfs_secpolicy_share
, POOL_CHECK_NONE
);
5480 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL
, zfs_ioc_smb_acl
,
5481 zfs_secpolicy_smb_acl
, POOL_CHECK_NONE
);
5482 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE
,
5483 zfs_ioc_userspace_upgrade
, zfs_secpolicy_userspace_upgrade
,
5484 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
);
5485 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT
,
5486 zfs_ioc_tmp_snapshot
, zfs_secpolicy_tmp_snapshot
,
5487 POOL_CHECK_SUSPENDED
| POOL_CHECK_READONLY
);
5492 zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_NEXT
, zfs_ioc_events_next
,
5493 zfs_secpolicy_config
, NO_NAME
, B_FALSE
, POOL_CHECK_NONE
);
5494 zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_CLEAR
, zfs_ioc_events_clear
,
5495 zfs_secpolicy_config
, NO_NAME
, B_FALSE
, POOL_CHECK_NONE
);
5496 zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_SEEK
, zfs_ioc_events_seek
,
5497 zfs_secpolicy_config
, NO_NAME
, B_FALSE
, POOL_CHECK_NONE
);
5501 pool_status_check(const char *name
, zfs_ioc_namecheck_t type
,
5502 zfs_ioc_poolcheck_t check
)
5507 ASSERT(type
== POOL_NAME
|| type
== DATASET_NAME
);
5509 if (check
& POOL_CHECK_NONE
)
5512 error
= spa_open(name
, &spa
, FTAG
);
5514 if ((check
& POOL_CHECK_SUSPENDED
) && spa_suspended(spa
))
5515 error
= SET_ERROR(EAGAIN
);
5516 else if ((check
& POOL_CHECK_READONLY
) && !spa_writeable(spa
))
5517 error
= SET_ERROR(EROFS
);
5518 spa_close(spa
, FTAG
);
5524 zfsdev_get_state_impl(minor_t minor
, enum zfsdev_state_type which
)
5528 for (zs
= zfsdev_state_list
; zs
!= NULL
; zs
= zs
->zs_next
) {
5529 if (zs
->zs_minor
== minor
) {
5533 return (zs
->zs_onexit
);
5535 return (zs
->zs_zevent
);
5546 zfsdev_get_state(minor_t minor
, enum zfsdev_state_type which
)
5550 ptr
= zfsdev_get_state_impl(minor
, which
);
5556 zfsdev_getminor(struct file
*filp
)
5558 ASSERT(filp
!= NULL
);
5559 ASSERT(filp
->private_data
!= NULL
);
5561 return (((zfsdev_state_t
*)filp
->private_data
)->zs_minor
);
5565 * Find a free minor number. The zfsdev_state_list is expected to
5566 * be short since it is only a list of currently open file handles.
5569 zfsdev_minor_alloc(void)
5571 static minor_t last_minor
= 0;
5574 ASSERT(MUTEX_HELD(&zfsdev_state_lock
));
5576 for (m
= last_minor
+ 1; m
!= last_minor
; m
++) {
5577 if (m
> ZFSDEV_MAX_MINOR
)
5579 if (zfsdev_get_state_impl(m
, ZST_ALL
) == NULL
) {
5589 zfsdev_state_init(struct file
*filp
)
5591 zfsdev_state_t
*zs
, *zsprev
= NULL
;
5593 boolean_t newzs
= B_FALSE
;
5595 ASSERT(MUTEX_HELD(&zfsdev_state_lock
));
5597 minor
= zfsdev_minor_alloc();
5599 return (SET_ERROR(ENXIO
));
5601 for (zs
= zfsdev_state_list
; zs
!= NULL
; zs
= zs
->zs_next
) {
5602 if (zs
->zs_minor
== -1)
5608 zs
= kmem_zalloc(sizeof (zfsdev_state_t
), KM_SLEEP
);
5613 filp
->private_data
= zs
;
5615 zfs_onexit_init((zfs_onexit_t
**)&zs
->zs_onexit
);
5616 zfs_zevent_init((zfs_zevent_t
**)&zs
->zs_zevent
);
5620 * In order to provide for lock-free concurrent read access
5621 * to the minor list in zfsdev_get_state_impl(), new entries
5622 * must be completely written before linking them into the
5623 * list whereas existing entries are already linked; the last
5624 * operation must be updating zs_minor (from -1 to the new
5628 zs
->zs_minor
= minor
;
5630 zsprev
->zs_next
= zs
;
5633 zs
->zs_minor
= minor
;
5640 zfsdev_state_destroy(struct file
*filp
)
5644 ASSERT(MUTEX_HELD(&zfsdev_state_lock
));
5645 ASSERT(filp
->private_data
!= NULL
);
5647 zs
= filp
->private_data
;
5649 zfs_onexit_destroy(zs
->zs_onexit
);
5650 zfs_zevent_destroy(zs
->zs_zevent
);
5656 zfsdev_open(struct inode
*ino
, struct file
*filp
)
5660 mutex_enter(&zfsdev_state_lock
);
5661 error
= zfsdev_state_init(filp
);
5662 mutex_exit(&zfsdev_state_lock
);
5668 zfsdev_release(struct inode
*ino
, struct file
*filp
)
5672 mutex_enter(&zfsdev_state_lock
);
5673 error
= zfsdev_state_destroy(filp
);
5674 mutex_exit(&zfsdev_state_lock
);
5680 zfsdev_ioctl(struct file
*filp
, unsigned cmd
, unsigned long arg
)
5684 int error
, rc
, flag
= 0;
5685 const zfs_ioc_vec_t
*vec
;
5686 char *saved_poolname
= NULL
;
5687 nvlist_t
*innvl
= NULL
;
5689 vecnum
= cmd
- ZFS_IOC_FIRST
;
5690 if (vecnum
>= sizeof (zfs_ioc_vec
) / sizeof (zfs_ioc_vec
[0]))
5691 return (-SET_ERROR(EINVAL
));
5692 vec
= &zfs_ioc_vec
[vecnum
];
5695 * The registered ioctl list may be sparse, verify that either
5696 * a normal or legacy handler are registered.
5698 if (vec
->zvec_func
== NULL
&& vec
->zvec_legacy_func
== NULL
)
5699 return (-SET_ERROR(EINVAL
));
5701 zc
= kmem_zalloc(sizeof (zfs_cmd_t
), KM_SLEEP
| KM_NODEBUG
);
5703 error
= ddi_copyin((void *)arg
, zc
, sizeof (zfs_cmd_t
), flag
);
5705 error
= SET_ERROR(EFAULT
);
5709 zc
->zc_iflags
= flag
& FKIOCTL
;
5710 if (zc
->zc_nvlist_src_size
!= 0) {
5711 error
= get_nvlist(zc
->zc_nvlist_src
, zc
->zc_nvlist_src_size
,
5712 zc
->zc_iflags
, &innvl
);
5718 * Ensure that all pool/dataset names are valid before we pass down to
5721 zc
->zc_name
[sizeof (zc
->zc_name
) - 1] = '\0';
5722 switch (vec
->zvec_namecheck
) {
5724 if (pool_namecheck(zc
->zc_name
, NULL
, NULL
) != 0)
5725 error
= SET_ERROR(EINVAL
);
5727 error
= pool_status_check(zc
->zc_name
,
5728 vec
->zvec_namecheck
, vec
->zvec_pool_check
);
5732 if (dataset_namecheck(zc
->zc_name
, NULL
, NULL
) != 0)
5733 error
= SET_ERROR(EINVAL
);
5735 error
= pool_status_check(zc
->zc_name
,
5736 vec
->zvec_namecheck
, vec
->zvec_pool_check
);
5744 if (error
== 0 && !(flag
& FKIOCTL
))
5745 error
= vec
->zvec_secpolicy(zc
, innvl
, CRED());
5750 /* legacy ioctls can modify zc_name */
5751 saved_poolname
= strdup(zc
->zc_name
);
5752 if (saved_poolname
== NULL
) {
5753 error
= SET_ERROR(ENOMEM
);
5756 saved_poolname
[strcspn(saved_poolname
, "/@#")] = '\0';
5759 if (vec
->zvec_func
!= NULL
) {
5763 nvlist_t
*lognv
= NULL
;
5765 ASSERT(vec
->zvec_legacy_func
== NULL
);
5768 * Add the innvl to the lognv before calling the func,
5769 * in case the func changes the innvl.
5771 if (vec
->zvec_allow_log
) {
5772 lognv
= fnvlist_alloc();
5773 fnvlist_add_string(lognv
, ZPOOL_HIST_IOCTL
,
5775 if (!nvlist_empty(innvl
)) {
5776 fnvlist_add_nvlist(lognv
, ZPOOL_HIST_INPUT_NVL
,
5781 VERIFY0(nvlist_alloc(&outnvl
, NV_UNIQUE_NAME
, KM_PUSHPAGE
));
5782 error
= vec
->zvec_func(zc
->zc_name
, innvl
, outnvl
);
5784 if (error
== 0 && vec
->zvec_allow_log
&&
5785 spa_open(zc
->zc_name
, &spa
, FTAG
) == 0) {
5786 if (!nvlist_empty(outnvl
)) {
5787 fnvlist_add_nvlist(lognv
, ZPOOL_HIST_OUTPUT_NVL
,
5790 (void) spa_history_log_nvl(spa
, lognv
);
5791 spa_close(spa
, FTAG
);
5793 fnvlist_free(lognv
);
5795 if (!nvlist_empty(outnvl
) || zc
->zc_nvlist_dst_size
!= 0) {
5797 if (vec
->zvec_smush_outnvlist
) {
5798 smusherror
= nvlist_smush(outnvl
,
5799 zc
->zc_nvlist_dst_size
);
5801 if (smusherror
== 0)
5802 puterror
= put_nvlist(zc
, outnvl
);
5808 nvlist_free(outnvl
);
5810 error
= vec
->zvec_legacy_func(zc
);
5815 rc
= ddi_copyout(zc
, (void *)arg
, sizeof (zfs_cmd_t
), flag
);
5816 if (error
== 0 && rc
!= 0)
5817 error
= SET_ERROR(EFAULT
);
5818 if (error
== 0 && vec
->zvec_allow_log
) {
5819 char *s
= tsd_get(zfs_allow_log_key
);
5822 (void) tsd_set(zfs_allow_log_key
, saved_poolname
);
5824 if (saved_poolname
!= NULL
)
5825 strfree(saved_poolname
);
5828 kmem_free(zc
, sizeof (zfs_cmd_t
));
5832 #ifdef CONFIG_COMPAT
5834 zfsdev_compat_ioctl(struct file
*filp
, unsigned cmd
, unsigned long arg
)
5836 return (zfsdev_ioctl(filp
, cmd
, arg
));
5839 #define zfsdev_compat_ioctl NULL
5842 static const struct file_operations zfsdev_fops
= {
5843 .open
= zfsdev_open
,
5844 .release
= zfsdev_release
,
5845 .unlocked_ioctl
= zfsdev_ioctl
,
5846 .compat_ioctl
= zfsdev_compat_ioctl
,
5847 .owner
= THIS_MODULE
,
5850 static struct miscdevice zfs_misc
= {
5851 .minor
= MISC_DYNAMIC_MINOR
,
5853 .fops
= &zfsdev_fops
,
5861 mutex_init(&zfsdev_state_lock
, NULL
, MUTEX_DEFAULT
, NULL
);
5862 zfsdev_state_list
= kmem_zalloc(sizeof (zfsdev_state_t
), KM_SLEEP
);
5863 zfsdev_state_list
->zs_minor
= -1;
5865 error
= misc_register(&zfs_misc
);
5867 printk(KERN_INFO
"ZFS: misc_register() failed %d\n", error
);
5878 zfsdev_state_t
*zs
, *zsprev
= NULL
;
5880 error
= misc_deregister(&zfs_misc
);
5882 printk(KERN_INFO
"ZFS: misc_deregister() failed %d\n", error
);
5884 mutex_destroy(&zfsdev_state_lock
);
5886 for (zs
= zfsdev_state_list
; zs
!= NULL
; zs
= zs
->zs_next
) {
5888 kmem_free(zsprev
, sizeof (zfsdev_state_t
));
5892 kmem_free(zsprev
, sizeof (zfsdev_state_t
));
5896 zfs_allow_log_destroy(void *arg
)
5898 char *poolname
= arg
;
5903 #define ZFS_DEBUG_STR " (DEBUG mode)"
5905 #define ZFS_DEBUG_STR ""
5913 spa_init(FREAD
| FWRITE
);
5916 if ((error
= zvol_init()) != 0)
5921 if ((error
= zfs_attach()) != 0)
5924 tsd_create(&zfs_fsyncer_key
, NULL
);
5925 tsd_create(&rrw_tsd_key
, rrw_tsd_destroy
);
5926 tsd_create(&zfs_allow_log_key
, zfs_allow_log_destroy
);
5928 printk(KERN_NOTICE
"ZFS: Loaded module v%s-%s%s, "
5929 "ZFS pool version %s, ZFS filesystem version %s\n",
5930 ZFS_META_VERSION
, ZFS_META_RELEASE
, ZFS_DEBUG_STR
,
5931 SPA_VERSION_STRING
, ZPL_VERSION_STRING
);
5932 #ifndef CONFIG_FS_POSIX_ACL
5933 printk(KERN_NOTICE
"ZFS: Posix ACLs disabled by kernel\n");
5934 #endif /* CONFIG_FS_POSIX_ACL */
5943 printk(KERN_NOTICE
"ZFS: Failed to Load ZFS Filesystem v%s-%s%s"
5944 ", rc = %d\n", ZFS_META_VERSION
, ZFS_META_RELEASE
,
5945 ZFS_DEBUG_STR
, error
);
5958 tsd_destroy(&zfs_fsyncer_key
);
5959 tsd_destroy(&rrw_tsd_key
);
5960 tsd_destroy(&zfs_allow_log_key
);
5962 printk(KERN_NOTICE
"ZFS: Unloaded module v%s-%s%s\n",
5963 ZFS_META_VERSION
, ZFS_META_RELEASE
, ZFS_DEBUG_STR
);
5969 spl_module_init(_init
);
5970 spl_module_exit(_fini
);
5972 MODULE_DESCRIPTION("ZFS");
5973 MODULE_AUTHOR(ZFS_META_AUTHOR
);
5974 MODULE_LICENSE(ZFS_META_LICENSE
);
5975 MODULE_VERSION(ZFS_META_VERSION
"-" ZFS_META_RELEASE
);
5976 #endif /* HAVE_SPL */