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]
22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 #pragma ident "@(#)zfs_ioctl.c 1.61 08/04/27 SMI"
28 #include <sys/types.h>
29 #include <sys/param.h>
30 #include <sys/errno.h>
33 #include <sys/modctl.h>
38 #include <sys/cmn_err.h>
40 #include <sys/zfs_ioctl.h>
41 #include <sys/zfs_znode.h>
44 #include <sys/spa_impl.h>
46 #include <sys/vdev_impl.h>
48 #include <sys/dsl_dir.h>
49 #include <sys/dsl_dataset.h>
50 #include <sys/dsl_prop.h>
51 #include <sys/dsl_deleg.h>
52 #include <sys/dmu_objset.h>
54 #include <sys/sunddi.h>
55 #include <sys/sunldi.h>
56 #include <sys/policy.h>
58 #include <sys/nvpair.h>
59 #include <sys/pathname.h>
60 #include <sys/mount.h>
62 #include <sys/fs/zfs.h>
63 #include <sys/zfs_ctldir.h>
64 #include <sys/zfs_dir.h>
66 #include <sharefs/share.h>
67 #include <sys/dmu_objset.h>
69 #include "zfs_namecheck.h"
71 #include "zfs_deleg.h"
73 extern struct modlfs zfs_modlfs;
75 extern void zfs_init(void);
76 extern void zfs_fini(void);
78 ldi_ident_t zfs_li = NULL;
81 typedef int zfs_ioc_func_t(zfs_cmd_t *);
82 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *);
84 typedef struct zfs_ioc_vec {
85 zfs_ioc_func_t *zvec_func;
86 zfs_secpolicy_func_t *zvec_secpolicy;
92 boolean_t zvec_his_log;
95 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */
97 __dprintf(const char *file, const char *func, int line, const char *fmt, ...)
104 * Get rid of annoying "../common/" prefix to filename.
106 newfile = strrchr(file, '/');
107 if (newfile != NULL) {
108 newfile = newfile + 1; /* Get rid of leading / */
114 (void) vsnprintf(buf, sizeof (buf), fmt, adx);
118 * To get this data, use the zfs-dprintf probe as so:
119 * dtrace -q -n 'zfs-dprintf \
120 * /stringof(arg0) == "dbuf.c"/ \
121 * {printf("%s: %s", stringof(arg1), stringof(arg3))}'
123 * arg1 = function name
127 DTRACE_PROBE4(zfs__dprintf,
128 char *, newfile, char *, func, int, line, char *, buf);
132 history_str_free(char *buf)
134 kmem_free(buf, HIS_MAX_RECORD_LEN);
138 history_str_get(zfs_cmd_t *zc)
142 if (zc->zc_history == NULL)
145 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP);
146 if (copyinstr((void *)(uintptr_t)zc->zc_history,
147 buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
148 history_str_free(buf);
152 buf[HIS_MAX_RECORD_LEN -1] = '\0';
160 * Return non-zero if the spa version is less than requested version.
163 zfs_check_version(const char *name, int version)
168 if (spa_open(name, &spa, FTAG) == 0) {
169 if (spa_version(spa) < version) {
170 spa_close(spa, FTAG);
173 spa_close(spa, FTAG);
181 * Return non-zero if the ZPL version is less than requested version.
184 zpl_check_version(const char *name, int version)
189 if (dmu_objset_open(name, DMU_OST_ANY,
190 DS_MODE_STANDARD | DS_MODE_READONLY, &os) == 0) {
191 uint64_t propversion;
193 if (zfs_get_zplprop(os, ZFS_PROP_VERSION,
194 &propversion) == 0) {
195 rc = !(propversion >= version);
197 dmu_objset_close(os);
203 zfs_log_history(zfs_cmd_t *zc)
208 if ((buf = history_str_get(zc)) == NULL)
211 if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
212 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
213 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL);
214 spa_close(spa, FTAG);
216 history_str_free(buf);
220 * Policy for top-level read operations (list pools). Requires no privileges,
221 * and can be used in the local zone, as there is no associated dataset.
225 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr)
231 * Policy for dataset read operations (list children, get statistics). Requires
232 * no privileges, but must be visible in the local zone.
236 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr)
238 if (INGLOBALZONE(curproc) ||
239 zone_dataset_visible(zc->zc_name, NULL))
246 zfs_dozonecheck(const char *dataset, cred_t *cr)
252 * The dataset must be visible by this zone -- check this first
253 * so they don't see EPERM on something they shouldn't know about.
255 if (!INGLOBALZONE(curproc) &&
256 !zone_dataset_visible(dataset, &writable))
259 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
262 if (INGLOBALZONE(curproc)) {
264 * If the fs is zoned, only root can access it from the
267 if (secpolicy_zfs(cr) && zoned)
271 * If we are in a local zone, the 'zoned' property must be set.
276 /* must be writable by this zone */
284 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
288 error = zfs_dozonecheck(name, cr);
290 error = secpolicy_zfs(cr);
292 error = dsl_deleg_access(name, perm, cr);
298 zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr)
301 * Check permissions for special properties.
306 * Disallow setting of 'zoned' from within a local zone.
308 if (!INGLOBALZONE(curproc))
313 if (!INGLOBALZONE(curproc)) {
315 char setpoint[MAXNAMELEN];
317 * Unprivileged users are allowed to modify the
318 * quota on things *under* (ie. contained by)
319 * the thing they own.
321 if (dsl_prop_get_integer(name, "zoned", &zoned,
324 if (!zoned || strlen(name) <= strlen(setpoint))
330 return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr));
334 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr)
338 error = zfs_dozonecheck(zc->zc_name, cr);
343 * permission to set permissions will be evaluated later in
344 * dsl_deleg_can_allow()
350 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr)
353 error = zfs_secpolicy_write_perms(zc->zc_name,
354 ZFS_DELEG_PERM_ROLLBACK, cr);
356 error = zfs_secpolicy_write_perms(zc->zc_name,
357 ZFS_DELEG_PERM_MOUNT, cr);
362 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr)
364 return (zfs_secpolicy_write_perms(zc->zc_name,
365 ZFS_DELEG_PERM_SEND, cr));
369 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr)
371 if (!INGLOBALZONE(curproc))
374 if (secpolicy_nfs(cr) == 0) {
380 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
381 NO_FOLLOW, NULL, &vp)) != 0)
384 /* Now make sure mntpnt and dataset are ZFS */
386 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
387 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
388 zc->zc_name) != 0)) {
394 return (dsl_deleg_access(zc->zc_name,
395 ZFS_DELEG_PERM_SHARE, cr));
400 zfs_get_parent(const char *datasetname, char *parent, int parentsize)
405 * Remove the @bla or /bla from the end of the name to get the parent.
407 (void) strncpy(parent, datasetname, parentsize);
408 cp = strrchr(parent, '@');
412 cp = strrchr(parent, '/');
422 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
426 if ((error = zfs_secpolicy_write_perms(name,
427 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
430 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
434 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr)
436 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
440 * Must have sys_config privilege to check the iscsi permission
444 zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr)
446 return (secpolicy_zfs(cr));
450 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
452 char parentname[MAXNAMELEN];
455 if ((error = zfs_secpolicy_write_perms(from,
456 ZFS_DELEG_PERM_RENAME, cr)) != 0)
459 if ((error = zfs_secpolicy_write_perms(from,
460 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
463 if ((error = zfs_get_parent(to, parentname,
464 sizeof (parentname))) != 0)
467 if ((error = zfs_secpolicy_write_perms(parentname,
468 ZFS_DELEG_PERM_CREATE, cr)) != 0)
471 if ((error = zfs_secpolicy_write_perms(parentname,
472 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
479 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr)
481 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));
485 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr)
487 char parentname[MAXNAMELEN];
491 error = zfs_secpolicy_write_perms(zc->zc_name,
492 ZFS_DELEG_PERM_PROMOTE, cr);
496 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY,
497 DS_MODE_STANDARD | DS_MODE_READONLY, &clone);
500 dsl_dataset_t *pclone = NULL;
502 dd = clone->os->os_dsl_dataset->ds_dir;
504 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER);
505 error = dsl_dataset_open_obj(dd->dd_pool,
506 dd->dd_phys->dd_origin_obj, NULL,
507 DS_MODE_NONE, FTAG, &pclone);
508 rw_exit(&dd->dd_pool->dp_config_rwlock);
510 dmu_objset_close(clone);
514 error = zfs_secpolicy_write_perms(zc->zc_name,
515 ZFS_DELEG_PERM_MOUNT, cr);
517 dsl_dataset_name(pclone, parentname);
518 dmu_objset_close(clone);
519 dsl_dataset_close(pclone, DS_MODE_NONE, FTAG);
521 error = zfs_secpolicy_write_perms(parentname,
522 ZFS_DELEG_PERM_PROMOTE, cr);
528 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr)
532 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
533 ZFS_DELEG_PERM_RECEIVE, cr)) != 0)
536 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
537 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
540 return (zfs_secpolicy_write_perms(zc->zc_name,
541 ZFS_DELEG_PERM_CREATE, cr));
545 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
549 if ((error = zfs_secpolicy_write_perms(name,
550 ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0)
553 error = zfs_secpolicy_write_perms(name,
554 ZFS_DELEG_PERM_MOUNT, cr);
560 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr)
563 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr));
567 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr)
569 char parentname[MAXNAMELEN];
572 if ((error = zfs_get_parent(zc->zc_name, parentname,
573 sizeof (parentname))) != 0)
576 if (zc->zc_value[0] != '\0') {
577 if ((error = zfs_secpolicy_write_perms(zc->zc_value,
578 ZFS_DELEG_PERM_CLONE, cr)) != 0)
582 if ((error = zfs_secpolicy_write_perms(parentname,
583 ZFS_DELEG_PERM_CREATE, cr)) != 0)
586 error = zfs_secpolicy_write_perms(parentname,
587 ZFS_DELEG_PERM_MOUNT, cr);
593 zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr)
597 error = secpolicy_fs_unmount(cr, NULL);
599 error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr);
605 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires
606 * SYS_CONFIG privilege, which is not available in a local zone.
610 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr)
612 if (secpolicy_sys_config(cr, B_FALSE) != 0)
619 * Just like zfs_secpolicy_config, except that we will check for
620 * mount permission on the dataset for permission to create/remove
624 zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr)
626 if (secpolicy_sys_config(cr, B_FALSE) != 0) {
627 return (dsl_deleg_access(zc->zc_name,
628 ZFS_DELEG_PERM_MOUNT, cr));
635 * Policy for fault injection. Requires all privileges.
639 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr)
641 return (secpolicy_zinject(cr));
645 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr)
647 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
649 if (prop == ZPROP_INVAL) {
650 if (!zfs_prop_user(zc->zc_value))
652 return (zfs_secpolicy_write_perms(zc->zc_name,
653 ZFS_DELEG_PERM_USERPROP, cr));
655 if (!zfs_prop_inheritable(prop))
657 return (zfs_secpolicy_setprop(zc->zc_name, prop, cr));
662 * Returns the nvlist as specified by the user in the zfs_cmd_t.
665 get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp)
669 nvlist_t *list = NULL;
672 * Read in and unpack the user-supplied nvlist.
677 packed = kmem_alloc(size, KM_SLEEP);
679 if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) {
680 kmem_free(packed, size);
684 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) {
685 kmem_free(packed, size);
689 kmem_free(packed, size);
696 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
702 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0);
704 if (size > zc->zc_nvlist_dst_size) {
707 packed = kmem_alloc(size, KM_SLEEP);
708 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
710 error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
712 kmem_free(packed, size);
715 zc->zc_nvlist_dst_size = size;
720 zfs_ioc_pool_create(zfs_cmd_t *zc)
723 nvlist_t *config, *props = NULL;
726 if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
730 if (zc->zc_nvlist_src_size != 0 && (error =
731 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) {
736 buf = history_str_get(zc);
738 error = spa_create(zc->zc_name, config, props, buf);
741 history_str_free(buf);
752 zfs_ioc_pool_destroy(zfs_cmd_t *zc)
756 error = spa_destroy(zc->zc_name);
761 zfs_ioc_pool_import(zfs_cmd_t *zc)
764 nvlist_t *config, *props = NULL;
767 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
771 if (zc->zc_nvlist_src_size != 0 && (error =
772 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) {
777 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
781 error = spa_import(zc->zc_name, config, props);
792 zfs_ioc_pool_export(zfs_cmd_t *zc)
796 error = spa_export(zc->zc_name, NULL);
801 zfs_ioc_pool_configs(zfs_cmd_t *zc)
806 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
809 error = put_nvlist(zc, configs);
811 nvlist_free(configs);
817 zfs_ioc_pool_stats(zfs_cmd_t *zc)
823 error = spa_get_stats(zc->zc_name, &config, zc->zc_value,
824 sizeof (zc->zc_value));
826 if (config != NULL) {
827 ret = put_nvlist(zc, config);
831 * The config may be present even if 'error' is non-zero.
832 * In this case we return success, and preserve the real errno
835 zc->zc_cookie = error;
844 * Try to import the given pool, returning pool stats as appropriate so that
845 * user land knows which devices are available and overall pool health.
848 zfs_ioc_pool_tryimport(zfs_cmd_t *zc)
850 nvlist_t *tryconfig, *config;
853 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
857 config = spa_tryimport(tryconfig);
859 nvlist_free(tryconfig);
864 error = put_nvlist(zc, config);
871 zfs_ioc_pool_scrub(zfs_cmd_t *zc)
876 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
879 mutex_enter(&spa_namespace_lock);
880 error = spa_scrub(spa, zc->zc_cookie, B_FALSE);
881 mutex_exit(&spa_namespace_lock);
883 spa_close(spa, FTAG);
889 zfs_ioc_pool_freeze(zfs_cmd_t *zc)
894 error = spa_open(zc->zc_name, &spa, FTAG);
897 spa_close(spa, FTAG);
903 zfs_ioc_pool_upgrade(zfs_cmd_t *zc)
908 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
911 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) {
912 spa_close(spa, FTAG);
916 spa_upgrade(spa, zc->zc_cookie);
917 spa_close(spa, FTAG);
923 zfs_ioc_pool_get_history(zfs_cmd_t *zc)
930 if ((size = zc->zc_history_len) == 0)
933 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
936 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
937 spa_close(spa, FTAG);
941 hist_buf = kmem_alloc(size, KM_SLEEP);
942 if ((error = spa_history_get(spa, &zc->zc_history_offset,
943 &zc->zc_history_len, hist_buf)) == 0) {
944 error = xcopyout(hist_buf,
945 (char *)(uintptr_t)zc->zc_history,
949 spa_close(spa, FTAG);
950 kmem_free(hist_buf, size);
955 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
959 if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value))
966 zfs_ioc_obj_to_path(zfs_cmd_t *zc)
971 if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS,
972 DS_MODE_NONE | DS_MODE_READONLY, &osp)) != 0)
975 error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value,
976 sizeof (zc->zc_value));
977 dmu_objset_close(osp);
983 zfs_ioc_vdev_add(zfs_cmd_t *zc)
987 nvlist_t *config, **l2cache, **spares;
988 uint_t nl2cache = 0, nspares = 0;
990 error = spa_open(zc->zc_name, &spa, FTAG);
994 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
996 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
997 &l2cache, &nl2cache);
999 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
1003 * A root pool with concatenated devices is not supported.
1004 * Thus, can not add a device to a root pool.
1006 * Intent log device can not be added to a rootpool because
1007 * during mountroot, zil is replayed, a seperated log device
1008 * can not be accessed during the mountroot time.
1010 * l2cache and spare devices are ok to be added to a rootpool.
1012 if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) {
1013 spa_close(spa, FTAG);
1018 error = spa_vdev_add(spa, config);
1019 nvlist_free(config);
1021 spa_close(spa, FTAG);
1026 zfs_ioc_vdev_remove(zfs_cmd_t *zc)
1031 error = spa_open(zc->zc_name, &spa, FTAG);
1034 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE);
1035 spa_close(spa, FTAG);
1040 zfs_ioc_vdev_set_state(zfs_cmd_t *zc)
1044 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
1046 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1048 switch (zc->zc_cookie) {
1049 case VDEV_STATE_ONLINE:
1050 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate);
1053 case VDEV_STATE_OFFLINE:
1054 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj);
1057 case VDEV_STATE_FAULTED:
1058 error = vdev_fault(spa, zc->zc_guid);
1061 case VDEV_STATE_DEGRADED:
1062 error = vdev_degrade(spa, zc->zc_guid);
1068 zc->zc_cookie = newstate;
1069 spa_close(spa, FTAG);
1074 zfs_ioc_vdev_attach(zfs_cmd_t *zc)
1077 int replacing = zc->zc_cookie;
1081 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1084 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1086 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
1087 nvlist_free(config);
1090 spa_close(spa, FTAG);
1095 zfs_ioc_vdev_detach(zfs_cmd_t *zc)
1100 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1103 error = spa_vdev_detach(spa, zc->zc_guid, B_FALSE);
1105 spa_close(spa, FTAG);
1110 zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
1113 char *path = zc->zc_value;
1114 uint64_t guid = zc->zc_guid;
1117 error = spa_open(zc->zc_name, &spa, FTAG);
1121 error = spa_vdev_setpath(spa, guid, path);
1122 spa_close(spa, FTAG);
1127 zfs_os_open_retry(char *name, objset_t **os)
1132 error = dmu_objset_open(name, DMU_OST_ANY,
1133 DS_MODE_STANDARD | DS_MODE_READONLY, os);
1136 * This is ugly: dmu_objset_open() can return EBUSY if
1137 * the objset is held exclusively. Fortunately this hold is
1138 * only for a short while, so we retry here.
1139 * This avoids user code having to handle EBUSY,
1140 * for example for a "zfs list".
1142 if (error == EBUSY) {
1152 * zc_name name of filesystem
1153 * zc_nvlist_dst_size size of buffer for property nvlist
1156 * zc_objset_stats stats
1157 * zc_nvlist_dst property nvlist
1158 * zc_nvlist_dst_size size of property nvlist
1159 * zc_value alternate root
1162 zfs_ioc_objset_stats(zfs_cmd_t *zc)
1164 objset_t *os = NULL;
1168 if ((error = zfs_os_open_retry(zc->zc_name, &os)) != 0)
1171 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1173 if (zc->zc_nvlist_dst != 0 &&
1174 (error = dsl_prop_get_all(os, &nv)) == 0) {
1175 dmu_objset_stats(os, nv);
1177 * NB: zvol_get_stats() will read the objset contents,
1178 * which we aren't supposed to do with a
1179 * DS_MODE_STANDARD open, because it could be
1180 * inconsistent. So this is a bit of a workaround...
1182 if (!zc->zc_objset_stats.dds_inconsistent) {
1183 if (dmu_objset_type(os) == DMU_OST_ZVOL)
1184 VERIFY(zvol_get_stats(os, nv) == 0);
1186 error = put_nvlist(zc, nv);
1190 spa_altroot(dmu_objset_spa(os), zc->zc_value, sizeof (zc->zc_value));
1192 dmu_objset_close(os);
1197 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop)
1203 * zfs_get_zplprop() will either find a value or give us
1204 * the default value (if there is one).
1206 if ((error = zfs_get_zplprop(os, prop, &value)) != 0)
1208 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0);
1214 * zc_name name of filesystem
1215 * zc_nvlist_dst_size size of buffer for zpl property nvlist
1218 * zc_nvlist_dst zpl property nvlist
1219 * zc_nvlist_dst_size size of zpl property nvlist
1222 zfs_ioc_objset_zplprops(zfs_cmd_t *zc)
1227 if ((err = zfs_os_open_retry(zc->zc_name, &os)) != 0)
1230 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1233 * NB: nvl_add_zplprop() will read the objset contents,
1234 * which we aren't supposed to do with a DS_MODE_STANDARD
1235 * open, because it could be inconsistent.
1237 if (zc->zc_nvlist_dst != NULL &&
1238 !zc->zc_objset_stats.dds_inconsistent &&
1239 dmu_objset_type(os) == DMU_OST_ZFS) {
1242 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1243 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 &&
1244 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 &&
1245 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 &&
1246 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0)
1247 err = put_nvlist(zc, nv);
1252 dmu_objset_close(os);
1258 * zc_name name of filesystem
1259 * zc_cookie zap cursor
1260 * zc_nvlist_dst_size size of buffer for property nvlist
1263 * zc_name name of next filesystem
1264 * zc_objset_stats stats
1265 * zc_nvlist_dst property nvlist
1266 * zc_nvlist_dst_size size of property nvlist
1267 * zc_value alternate root
1270 zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
1276 if ((error = zfs_os_open_retry(zc->zc_name, &os)) != 0) {
1277 if (error == ENOENT)
1282 p = strrchr(zc->zc_name, '/');
1283 if (p == NULL || p[1] != '\0')
1284 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
1285 p = zc->zc_name + strlen(zc->zc_name);
1288 error = dmu_dir_list_next(os,
1289 sizeof (zc->zc_name) - (p - zc->zc_name), p,
1290 NULL, &zc->zc_cookie);
1291 if (error == ENOENT)
1293 } while (error == 0 && !INGLOBALZONE(curproc) &&
1294 !zone_dataset_visible(zc->zc_name, NULL));
1297 * If it's a hidden dataset (ie. with a '$' in its name), don't
1298 * try to get stats for it. Userland will skip over it.
1300 if (error == 0 && strchr(zc->zc_name, '$') == NULL)
1301 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
1303 dmu_objset_close(os);
1309 * zc_name name of filesystem
1310 * zc_cookie zap cursor
1311 * zc_nvlist_dst_size size of buffer for property nvlist
1314 * zc_name name of next snapshot
1315 * zc_objset_stats stats
1316 * zc_nvlist_dst property nvlist
1317 * zc_nvlist_dst_size size of property nvlist
1318 * zc_value alternate root
1321 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc)
1326 if ((error = zfs_os_open_retry(zc->zc_name, &os)) != 0) {
1327 if (error == ENOENT)
1333 * A dataset name of maximum length cannot have any snapshots,
1334 * so exit immediately.
1336 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) {
1337 dmu_objset_close(os);
1341 error = dmu_snapshot_list_next(os,
1342 sizeof (zc->zc_name) - strlen(zc->zc_name),
1343 zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL);
1344 if (error == ENOENT)
1348 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
1350 /* if we failed, undo the @ that we tacked on to zc_name */
1352 *strchr(zc->zc_name, '@') = '\0';
1354 dmu_objset_close(os);
1359 zfs_set_prop_nvlist(const char *name, nvlist_t *nvl)
1367 * First validate permission to set all of the properties
1370 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
1371 const char *propname = nvpair_name(elem);
1372 zfs_prop_t prop = zfs_name_to_prop(propname);
1374 if (prop == ZPROP_INVAL) {
1376 * If this is a user-defined property, it must be a
1377 * string, and there is no further validation to do.
1379 if (!zfs_prop_user(propname) ||
1380 nvpair_type(elem) != DATA_TYPE_STRING)
1383 if (error = zfs_secpolicy_write_perms(name,
1384 ZFS_DELEG_PERM_USERPROP, CRED()))
1389 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0)
1393 * Check that this value is valid for this pool version
1396 case ZFS_PROP_COMPRESSION:
1398 * If the user specified gzip compression, make sure
1399 * the SPA supports it. We ignore any errors here since
1400 * we'll catch them later.
1402 if (nvpair_type(elem) == DATA_TYPE_UINT64 &&
1403 nvpair_value_uint64(elem, &intval) == 0 &&
1404 intval >= ZIO_COMPRESS_GZIP_1 &&
1405 intval <= ZIO_COMPRESS_GZIP_9) {
1406 if (zfs_check_version(name,
1407 SPA_VERSION_GZIP_COMPRESSION))
1412 case ZFS_PROP_COPIES:
1413 if (zfs_check_version(name, SPA_VERSION_DITTO_BLOCKS))
1417 case ZFS_PROP_SHARESMB:
1418 if (zpl_check_version(name, ZPL_VERSION_FUID))
1422 if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0)
1427 while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
1428 const char *propname = nvpair_name(elem);
1429 zfs_prop_t prop = zfs_name_to_prop(propname);
1431 if (prop == ZPROP_INVAL) {
1432 VERIFY(nvpair_value_string(elem, &strval) == 0);
1433 error = dsl_prop_set(name, propname, 1,
1434 strlen(strval) + 1, strval);
1442 case ZFS_PROP_QUOTA:
1443 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1444 (error = dsl_dir_set_quota(name, intval)) != 0)
1448 case ZFS_PROP_REFQUOTA:
1449 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1450 (error = dsl_dataset_set_quota(name, intval)) != 0)
1454 case ZFS_PROP_RESERVATION:
1455 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1456 (error = dsl_dir_set_reservation(name,
1461 case ZFS_PROP_REFRESERVATION:
1462 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1463 (error = dsl_dataset_set_reservation(name,
1468 case ZFS_PROP_VOLSIZE:
1469 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1470 (error = zvol_set_volsize(name,
1471 ddi_driver_major(zfs_dip), intval)) != 0)
1475 case ZFS_PROP_VOLBLOCKSIZE:
1476 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1477 (error = zvol_set_volblocksize(name, intval)) != 0)
1481 case ZFS_PROP_VERSION:
1482 if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
1483 (error = zfs_set_version(name, intval)) != 0)
1488 if (nvpair_type(elem) == DATA_TYPE_STRING) {
1489 if (zfs_prop_get_type(prop) !=
1492 VERIFY(nvpair_value_string(elem, &strval) == 0);
1493 if ((error = dsl_prop_set(name,
1494 nvpair_name(elem), 1, strlen(strval) + 1,
1497 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) {
1500 VERIFY(nvpair_value_uint64(elem, &intval) == 0);
1502 switch (zfs_prop_get_type(prop)) {
1503 case PROP_TYPE_NUMBER:
1505 case PROP_TYPE_STRING:
1507 case PROP_TYPE_INDEX:
1508 if (zfs_prop_index_to_string(prop,
1509 intval, &unused) != 0)
1514 "unknown property type");
1518 if ((error = dsl_prop_set(name, propname,
1519 8, 1, &intval)) != 0)
1533 * zc_name name of filesystem
1534 * zc_value name of property to inherit
1535 * zc_nvlist_src{_size} nvlist of properties to apply
1540 zfs_ioc_set_prop(zfs_cmd_t *zc)
1545 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1549 error = zfs_set_prop_nvlist(zc->zc_name, nvl);
1557 * zc_name name of filesystem
1558 * zc_value name of property to inherit
1563 zfs_ioc_inherit_prop(zfs_cmd_t *zc)
1565 /* the property name has been validated by zfs_secpolicy_inherit() */
1566 return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL));
1570 zfs_ioc_pool_set_props(zfs_cmd_t *zc)
1576 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1580 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
1585 error = spa_prop_set(spa, props);
1588 spa_close(spa, FTAG);
1594 zfs_ioc_pool_get_props(zfs_cmd_t *zc)
1598 nvlist_t *nvp = NULL;
1600 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1603 error = spa_prop_get(spa, &nvp);
1605 if (error == 0 && zc->zc_nvlist_dst != NULL)
1606 error = put_nvlist(zc, nvp);
1610 spa_close(spa, FTAG);
1618 zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc)
1628 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1633 if ((error = nvlist_lookup_uint32(nvp,
1634 ZFS_DELEG_PERM_UID, &uid)) != 0) {
1639 if ((error = nvlist_lookup_uint32(nvp,
1640 ZFS_DELEG_PERM_GID, &gid)) != 0) {
1645 if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS,
1646 &groups, &group_cnt)) != 0) {
1650 usercred = cralloc();
1651 if ((crsetugid(usercred, uid, gid) != 0) ||
1652 (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) {
1658 error = dsl_deleg_access(zc->zc_name,
1659 zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred);
1666 * zc_name name of filesystem
1667 * zc_nvlist_src{_size} nvlist of delegated permissions
1668 * zc_perm_action allow/unallow flag
1673 zfs_ioc_set_fsacl(zfs_cmd_t *zc)
1676 nvlist_t *fsaclnv = NULL;
1678 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1683 * Verify nvlist is constructed correctly
1685 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
1686 nvlist_free(fsaclnv);
1691 * If we don't have PRIV_SYS_MOUNT, then validate
1692 * that user is allowed to hand out each permission in
1696 error = secpolicy_zfs(CRED());
1698 if (zc->zc_perm_action == B_FALSE) {
1699 error = dsl_deleg_can_allow(zc->zc_name,
1702 error = dsl_deleg_can_unallow(zc->zc_name,
1708 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action);
1710 nvlist_free(fsaclnv);
1716 * zc_name name of filesystem
1719 * zc_nvlist_src{_size} nvlist of delegated permissions
1722 zfs_ioc_get_fsacl(zfs_cmd_t *zc)
1727 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) {
1728 error = put_nvlist(zc, nvp);
1737 * zc_name name of volume
1742 zfs_ioc_create_minor(zfs_cmd_t *zc)
1744 return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip)));
1749 * zc_name name of volume
1754 zfs_ioc_remove_minor(zfs_cmd_t *zc)
1756 return (zvol_remove_minor(zc->zc_name));
1760 * Search the vfs list for a specified resource. Returns a pointer to it
1761 * or NULL if no suitable entry is found. The caller of this routine
1762 * is responsible for releasing the returned vfs pointer.
1765 zfs_get_vfs(const char *resource)
1768 struct vfs *vfs_found = NULL;
1770 vfs_list_read_lock();
1773 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) {
1778 vfsp = vfsp->vfs_next;
1779 } while (vfsp != rootvfs);
1786 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
1788 zfs_creat_t *zct = arg;
1790 zfs_create_fs(os, cr, zct->zct_zplprops, tx);
1793 #define ZFS_PROP_UNDEFINED ((uint64_t)-1)
1797 * createprops list of properties requested by creator
1798 * dataset name of dataset we are creating
1801 * zplprops values for the zplprops we attach to the master node object
1803 * Determine the settings for utf8only, normalization and
1804 * casesensitivity. Specific values may have been requested by the
1805 * creator and/or we can inherit values from the parent dataset. If
1806 * the file system is of too early a vintage, a creator can not
1807 * request settings for these properties, even if the requested
1808 * setting is the default value. We don't actually want to create dsl
1809 * properties for these, so remove them from the source nvlist after
1813 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
1814 nvlist_t *zplprops, uint64_t zplver, boolean_t *is_ci)
1817 char parentname[MAXNAMELEN];
1819 uint64_t sense = ZFS_PROP_UNDEFINED;
1820 uint64_t norm = ZFS_PROP_UNDEFINED;
1821 uint64_t u8 = ZFS_PROP_UNDEFINED;
1824 ASSERT(zplprops != NULL);
1826 (void) strlcpy(parentname, dataset, sizeof (parentname));
1827 cp = strrchr(parentname, '/');
1832 * Pull out creator prop choices, if any.
1835 (void) nvlist_lookup_uint64(createprops,
1836 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm);
1837 (void) nvlist_remove_all(createprops,
1838 zfs_prop_to_name(ZFS_PROP_NORMALIZE));
1839 (void) nvlist_lookup_uint64(createprops,
1840 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8);
1841 (void) nvlist_remove_all(createprops,
1842 zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
1843 (void) nvlist_lookup_uint64(createprops,
1844 zfs_prop_to_name(ZFS_PROP_CASE), &sense);
1845 (void) nvlist_remove_all(createprops,
1846 zfs_prop_to_name(ZFS_PROP_CASE));
1850 * If the file system or pool is version is too "young" to
1851 * support normalization and the creator tried to set a value
1852 * for one of the props, error out. We only need check the
1853 * ZPL version because we've already checked by now that the
1854 * SPA version is compatible with the selected ZPL version.
1856 if (zplver < ZPL_VERSION_NORMALIZATION &&
1857 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
1858 sense != ZFS_PROP_UNDEFINED))
1862 * Put the version in the zplprops
1864 VERIFY(nvlist_add_uint64(zplprops,
1865 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
1868 * Open parent object set so we can inherit zplprop values if
1871 if ((error = zfs_os_open_retry(parentname, &os)) != 0)
1874 if (norm == ZFS_PROP_UNDEFINED)
1875 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0);
1876 VERIFY(nvlist_add_uint64(zplprops,
1877 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
1880 * If we're normalizing, names must always be valid UTF-8 strings.
1884 if (u8 == ZFS_PROP_UNDEFINED)
1885 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0);
1886 VERIFY(nvlist_add_uint64(zplprops,
1887 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
1889 if (sense == ZFS_PROP_UNDEFINED)
1890 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0);
1891 VERIFY(nvlist_add_uint64(zplprops,
1892 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
1895 *is_ci = (sense == ZFS_CASE_INSENSITIVE);
1897 dmu_objset_close(os);
1903 * zc_objset_type type of objset to create (fs vs zvol)
1904 * zc_name name of new objset
1905 * zc_value name of snapshot to clone from (may be empty)
1906 * zc_nvlist_src{_size} nvlist of properties to apply
1911 zfs_ioc_create(zfs_cmd_t *zc)
1916 nvlist_t *nvprops = NULL;
1917 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
1918 dmu_objset_type_t type = zc->zc_objset_type;
1923 cbfunc = zfs_create_cb;
1927 cbfunc = zvol_create_cb;
1934 if (strchr(zc->zc_name, '@') ||
1935 strchr(zc->zc_name, '%'))
1938 if (zc->zc_nvlist_src != NULL &&
1939 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1943 zct.zct_zplprops = NULL;
1944 zct.zct_props = nvprops;
1946 if (zc->zc_value[0] != '\0') {
1948 * We're creating a clone of an existing snapshot.
1950 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
1951 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) {
1952 nvlist_free(nvprops);
1956 error = dmu_objset_open(zc->zc_value, type,
1957 DS_MODE_STANDARD | DS_MODE_READONLY, &clone);
1959 nvlist_free(nvprops);
1963 error = dmu_objset_create(zc->zc_name, type, clone, 0,
1966 dmu_objset_close(clone);
1967 nvlist_free(nvprops);
1970 dmu_objset_close(clone);
1972 boolean_t is_insensitive = B_FALSE;
1974 if (cbfunc == NULL) {
1975 nvlist_free(nvprops);
1979 if (type == DMU_OST_ZVOL) {
1980 uint64_t volsize, volblocksize;
1982 if (nvprops == NULL ||
1983 nvlist_lookup_uint64(nvprops,
1984 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
1986 nvlist_free(nvprops);
1990 if ((error = nvlist_lookup_uint64(nvprops,
1991 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
1992 &volblocksize)) != 0 && error != ENOENT) {
1993 nvlist_free(nvprops);
1998 volblocksize = zfs_prop_default_numeric(
1999 ZFS_PROP_VOLBLOCKSIZE);
2001 if ((error = zvol_check_volblocksize(
2002 volblocksize)) != 0 ||
2003 (error = zvol_check_volsize(volsize,
2004 volblocksize)) != 0) {
2005 nvlist_free(nvprops);
2008 } else if (type == DMU_OST_ZFS) {
2013 * Default ZPL version to non-FUID capable if the
2014 * pool is not upgraded to support FUIDs.
2016 if (zfs_check_version(zc->zc_name, SPA_VERSION_FUID))
2017 version = ZPL_VERSION_FUID - 1;
2019 version = ZPL_VERSION;
2022 * Potentially override default ZPL version based
2023 * on creator's request.
2025 (void) nvlist_lookup_uint64(nvprops,
2026 zfs_prop_to_name(ZFS_PROP_VERSION), &version);
2029 * Make sure version we ended up with is kosher
2031 if ((version < ZPL_VERSION_INITIAL ||
2032 version > ZPL_VERSION) ||
2033 (version >= ZPL_VERSION_FUID &&
2034 zfs_check_version(zc->zc_name, SPA_VERSION_FUID))) {
2035 nvlist_free(nvprops);
2040 * We have to have normalization and
2041 * case-folding flags correct when we do the
2042 * file system creation, so go figure them out
2045 VERIFY(nvlist_alloc(&zct.zct_zplprops,
2046 NV_UNIQUE_NAME, KM_SLEEP) == 0);
2047 error = zfs_fill_zplprops(zc->zc_name, nvprops,
2048 zct.zct_zplprops, version, &is_insensitive);
2050 nvlist_free(nvprops);
2051 nvlist_free(zct.zct_zplprops);
2055 error = dmu_objset_create(zc->zc_name, type, NULL,
2056 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
2057 nvlist_free(zct.zct_zplprops);
2061 * It would be nice to do this atomically.
2064 if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0)
2065 (void) dmu_objset_destroy(zc->zc_name);
2067 nvlist_free(nvprops);
2073 * zc_name name of filesystem
2074 * zc_value short name of snapshot
2075 * zc_cookie recursive flag
2080 zfs_ioc_snapshot(zfs_cmd_t *zc)
2082 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
2084 return (dmu_objset_snapshot(zc->zc_name,
2085 zc->zc_value, zc->zc_cookie));
2089 zfs_unmount_snap(char *name, void *arg)
2091 char *snapname = arg;
2096 * Snapshots (which are under .zfs control) must be unmounted
2097 * before they can be destroyed.
2101 (void) strcat(name, "@");
2102 (void) strcat(name, snapname);
2103 vfsp = zfs_get_vfs(name);
2104 cp = strchr(name, '@');
2106 } else if (strchr(name, '@')) {
2107 vfsp = zfs_get_vfs(name);
2112 * Always force the unmount for snapshots.
2114 int flag = MS_FORCE;
2117 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) {
2122 if ((err = dounmount(vfsp, flag, kcred)) != 0)
2130 * zc_name name of filesystem
2131 * zc_value short name of snapshot
2136 zfs_ioc_destroy_snaps(zfs_cmd_t *zc)
2140 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
2142 err = dmu_objset_find(zc->zc_name,
2143 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN);
2146 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value));
2151 * zc_name name of dataset to destroy
2152 * zc_objset_type type of objset
2157 zfs_ioc_destroy(zfs_cmd_t *zc)
2159 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) {
2160 int err = zfs_unmount_snap(zc->zc_name, NULL);
2165 return (dmu_objset_destroy(zc->zc_name));
2170 * zc_name name of dataset to rollback (to most recent snapshot)
2175 zfs_ioc_rollback(zfs_cmd_t *zc)
2179 zfsvfs_t *zfsvfs = NULL;
2182 * Get the zfsvfs for the receiving objset. There
2183 * won't be one if we're operating on a zvol, if the
2184 * objset doesn't exist yet, or is not mounted.
2186 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY,
2187 DS_MODE_STANDARD, &os);
2191 if (dmu_objset_type(os) == DMU_OST_ZFS) {
2192 mutex_enter(&os->os->os_user_ptr_lock);
2193 zfsvfs = dmu_objset_get_user(os);
2195 VFS_HOLD(zfsvfs->z_vfs);
2196 mutex_exit(&os->os->os_user_ptr_lock);
2199 if (zfsvfs != NULL) {
2200 char osname[MAXNAMELEN];
2203 error = zfs_suspend_fs(zfsvfs, osname, &mode);
2207 ASSERT(strcmp(osname, zc->zc_name) == 0);
2208 error = dmu_objset_rollback(os);
2209 resume_err = zfs_resume_fs(zfsvfs, osname, mode);
2210 error = error ? error : resume_err;
2212 dmu_objset_close(os);
2214 VFS_RELE(zfsvfs->z_vfs);
2216 error = dmu_objset_rollback(os);
2218 /* Note, the dmu_objset_rollback() closes the objset for us. */
2225 * zc_name old name of dataset
2226 * zc_value new name of dataset
2227 * zc_cookie recursive flag (only valid for snapshots)
2232 zfs_ioc_rename(zfs_cmd_t *zc)
2234 boolean_t recursive = zc->zc_cookie & 1;
2236 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
2237 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
2238 strchr(zc->zc_value, '%'))
2242 * Unmount snapshot unless we're doing a recursive rename,
2243 * in which case the dataset code figures out which snapshots
2246 if (!recursive && strchr(zc->zc_name, '@') != NULL &&
2247 zc->zc_objset_type == DMU_OST_ZFS) {
2248 int err = zfs_unmount_snap(zc->zc_name, NULL);
2253 return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive));
2258 * zc_name name of containing filesystem
2259 * zc_nvlist_src{_size} nvlist of properties to apply
2260 * zc_value name of snapshot to create
2261 * zc_string name of clone origin (if DRR_FLAG_CLONE)
2262 * zc_cookie file descriptor to recv from
2263 * zc_begin_record the BEGIN record of the stream (not byteswapped)
2264 * zc_guid force flag
2267 * zc_cookie number of bytes read
2270 zfs_ioc_recv(zfs_cmd_t *zc)
2274 dmu_recv_cookie_t drc;
2275 zfsvfs_t *zfsvfs = NULL;
2276 boolean_t force = (boolean_t)zc->zc_guid;
2279 nvlist_t *props = NULL;
2280 objset_t *origin = NULL;
2282 char tofs[ZFS_MAXNAMELEN];
2284 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
2285 strchr(zc->zc_value, '@') == NULL ||
2286 strchr(zc->zc_value, '%'))
2289 (void) strcpy(tofs, zc->zc_value);
2290 tosnap = strchr(tofs, '@');
2294 if (zc->zc_nvlist_src != NULL &&
2295 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2307 * Get the zfsvfs for the receiving objset. There
2308 * won't be one if we're operating on a zvol, if the
2309 * objset doesn't exist yet, or is not mounted.
2312 error = dmu_objset_open(tofs, DMU_OST_ZFS,
2313 DS_MODE_STANDARD | DS_MODE_READONLY, &os);
2315 mutex_enter(&os->os->os_user_ptr_lock);
2316 zfsvfs = dmu_objset_get_user(os);
2317 if (zfsvfs != NULL) {
2318 VFS_HOLD(zfsvfs->z_vfs);
2319 mutex_exit(&os->os->os_user_ptr_lock);
2320 if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) {
2321 VFS_RELE(zfsvfs->z_vfs);
2322 dmu_objset_close(os);
2328 mutex_exit(&os->os->os_user_ptr_lock);
2330 dmu_objset_close(os);
2333 if (zc->zc_string[0]) {
2334 error = dmu_objset_open(zc->zc_string, DMU_OST_ANY,
2335 DS_MODE_STANDARD | DS_MODE_READONLY, &origin);
2337 if (zfsvfs != NULL) {
2338 mutex_exit(&zfsvfs->z_online_recv_lock);
2339 VFS_RELE(zfsvfs->z_vfs);
2347 error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record,
2348 force, origin, zfsvfs != NULL, &drc);
2350 dmu_objset_close(origin);
2352 if (zfsvfs != NULL) {
2353 mutex_exit(&zfsvfs->z_online_recv_lock);
2354 VFS_RELE(zfsvfs->z_vfs);
2362 * If properties are supplied, they are to completely replace
2363 * the existing ones; "inherit" any existing properties.
2367 nvlist_t *nv = NULL;
2369 error = dmu_objset_open(tofs, DMU_OST_ANY,
2370 DS_MODE_STANDARD | DS_MODE_READONLY | DS_MODE_INCONSISTENT,
2373 error = dsl_prop_get_all(os, &nv);
2374 dmu_objset_close(os);
2379 zc2 = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP);
2381 (void) strcpy(zc2->zc_name, tofs);
2382 for (elem = nvlist_next_nvpair(nv, NULL); elem;
2383 elem = nvlist_next_nvpair(nv, elem)) {
2384 (void) strcpy(zc2->zc_value, nvpair_name(elem));
2385 if (zfs_secpolicy_inherit(zc2, CRED()) == 0)
2386 (void) zfs_ioc_inherit_prop(zc2);
2388 kmem_free(zc2, sizeof (zfs_cmd_t));
2395 * Set properties. Note, we ignore errors. Would be better to
2396 * do best-effort in zfs_set_prop_nvlist, too.
2398 (void) zfs_set_prop_nvlist(tofs, props);
2402 error = dmu_recv_stream(&drc, fp->f_vnode, &off);
2405 if (zfsvfs != NULL) {
2406 char osname[MAXNAMELEN];
2409 error = zfs_suspend_fs(zfsvfs, osname, &mode);
2413 error = dmu_recv_end(&drc);
2414 resume_err = zfs_resume_fs(zfsvfs,
2416 error = error ? error : resume_err;
2418 dmu_recv_abort_cleanup(&drc);
2421 error = dmu_recv_end(&drc);
2424 if (zfsvfs != NULL) {
2425 mutex_exit(&zfsvfs->z_online_recv_lock);
2426 VFS_RELE(zfsvfs->z_vfs);
2429 zc->zc_cookie = off - fp->f_offset;
2430 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
2439 * zc_name name of snapshot to send
2440 * zc_value short name of incremental fromsnap (may be empty)
2441 * zc_cookie file descriptor to send stream to
2442 * zc_obj fromorigin flag (mutually exclusive with zc_value)
2447 zfs_ioc_send(zfs_cmd_t *zc)
2449 objset_t *fromsnap = NULL;
2455 error = dmu_objset_open(zc->zc_name, DMU_OST_ANY,
2456 DS_MODE_STANDARD | DS_MODE_READONLY, &tosnap);
2460 if (zc->zc_value[0] != '\0') {
2461 char buf[MAXPATHLEN];
2464 (void) strncpy(buf, zc->zc_name, sizeof (buf));
2465 cp = strchr(buf, '@');
2468 (void) strncat(buf, zc->zc_value, sizeof (buf));
2469 error = dmu_objset_open(buf, DMU_OST_ANY,
2470 DS_MODE_STANDARD | DS_MODE_READONLY, &fromsnap);
2472 dmu_objset_close(tosnap);
2477 fp = getf(zc->zc_cookie);
2479 dmu_objset_close(tosnap);
2481 dmu_objset_close(fromsnap);
2486 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off);
2488 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
2490 releasef(zc->zc_cookie);
2492 dmu_objset_close(fromsnap);
2493 dmu_objset_close(tosnap);
2498 zfs_ioc_inject_fault(zfs_cmd_t *zc)
2502 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id,
2503 &zc->zc_inject_record);
2506 zc->zc_guid = (uint64_t)id;
2512 zfs_ioc_clear_fault(zfs_cmd_t *zc)
2514 return (zio_clear_fault((int)zc->zc_guid));
2518 zfs_ioc_inject_list_next(zfs_cmd_t *zc)
2520 int id = (int)zc->zc_guid;
2523 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name),
2524 &zc->zc_inject_record);
2532 zfs_ioc_error_log(zfs_cmd_t *zc)
2536 size_t count = (size_t)zc->zc_nvlist_dst_size;
2538 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
2541 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst,
2544 zc->zc_nvlist_dst_size = count;
2546 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa);
2548 spa_close(spa, FTAG);
2554 zfs_ioc_clear(zfs_cmd_t *zc)
2561 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
2565 * Try to resume any I/Os which may have been suspended
2566 * as a result of a complete pool failure.
2568 if (!list_is_empty(&spa->spa_zio_list)) {
2569 if (zio_vdev_resume_io(spa) != 0) {
2570 spa_close(spa, FTAG);
2575 txg = spa_vdev_enter(spa);
2577 if (zc->zc_guid == 0) {
2579 } else if ((vd = spa_lookup_by_guid(spa, zc->zc_guid)) == NULL) {
2580 spa_aux_vdev_t *sav;
2584 * Check if this is an l2cache device.
2586 ASSERT(spa != NULL);
2587 sav = &spa->spa_l2cache;
2588 for (i = 0; i < sav->sav_count; i++) {
2589 if (sav->sav_vdevs[i]->vdev_guid == zc->zc_guid) {
2590 vd = sav->sav_vdevs[i];
2596 (void) spa_vdev_exit(spa, NULL, txg, ENODEV);
2597 spa_close(spa, FTAG);
2602 vdev_clear(spa, vd, B_TRUE);
2604 (void) spa_vdev_exit(spa, NULL, txg, 0);
2606 spa_close(spa, FTAG);
2613 * zc_name name of filesystem
2614 * zc_value name of origin snapshot
2619 zfs_ioc_promote(zfs_cmd_t *zc)
2624 * We don't need to unmount *all* the origin fs's snapshots, but
2627 cp = strchr(zc->zc_value, '@');
2630 (void) dmu_objset_find(zc->zc_value,
2631 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS);
2632 return (dsl_dataset_promote(zc->zc_name));
2636 * We don't want to have a hard dependency
2637 * against some special symbols in sharefs
2638 * nfs, and smbsrv. Determine them if needed when
2639 * the first file system is shared.
2640 * Neither sharefs, nfs or smbsrv are unloadable modules.
2642 int (*znfsexport_fs)(void *arg);
2643 int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t);
2644 int (*zsmbexport_fs)(void *arg, boolean_t add_share);
2646 int zfs_nfsshare_inited;
2647 int zfs_smbshare_inited;
2649 ddi_modhandle_t nfs_mod;
2650 ddi_modhandle_t sharefs_mod;
2651 ddi_modhandle_t smbsrv_mod;
2652 kmutex_t zfs_share_lock;
2659 ASSERT(MUTEX_HELD(&zfs_share_lock));
2660 /* Both NFS and SMB shares also require sharetab support. */
2661 if (sharefs_mod == NULL && ((sharefs_mod =
2662 ddi_modopen("fs/sharefs",
2663 KRTLD_MODE_FIRST, &error)) == NULL)) {
2666 if (zshare_fs == NULL && ((zshare_fs =
2667 (int (*)(enum sharefs_sys_op, share_t *, uint32_t))
2668 ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) {
2675 zfs_ioc_share(zfs_cmd_t *zc)
2680 switch (zc->zc_share.z_sharetype) {
2682 case ZFS_UNSHARE_NFS:
2683 if (zfs_nfsshare_inited == 0) {
2684 mutex_enter(&zfs_share_lock);
2685 if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs",
2686 KRTLD_MODE_FIRST, &error)) == NULL)) {
2687 mutex_exit(&zfs_share_lock);
2690 if (znfsexport_fs == NULL &&
2691 ((znfsexport_fs = (int (*)(void *))
2693 "nfs_export", &error)) == NULL)) {
2694 mutex_exit(&zfs_share_lock);
2697 error = zfs_init_sharefs();
2699 mutex_exit(&zfs_share_lock);
2702 zfs_nfsshare_inited = 1;
2703 mutex_exit(&zfs_share_lock);
2707 case ZFS_UNSHARE_SMB:
2708 if (zfs_smbshare_inited == 0) {
2709 mutex_enter(&zfs_share_lock);
2710 if (smbsrv_mod == NULL && ((smbsrv_mod =
2711 ddi_modopen("drv/smbsrv",
2712 KRTLD_MODE_FIRST, &error)) == NULL)) {
2713 mutex_exit(&zfs_share_lock);
2716 if (zsmbexport_fs == NULL && ((zsmbexport_fs =
2717 (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod,
2718 "smb_server_share", &error)) == NULL)) {
2719 mutex_exit(&zfs_share_lock);
2722 error = zfs_init_sharefs();
2724 mutex_exit(&zfs_share_lock);
2727 zfs_smbshare_inited = 1;
2728 mutex_exit(&zfs_share_lock);
2735 switch (zc->zc_share.z_sharetype) {
2737 case ZFS_UNSHARE_NFS:
2739 znfsexport_fs((void *)
2740 (uintptr_t)zc->zc_share.z_exportdata))
2744 case ZFS_UNSHARE_SMB:
2745 if (error = zsmbexport_fs((void *)
2746 (uintptr_t)zc->zc_share.z_exportdata,
2747 zc->zc_share.z_sharetype == ZFS_SHARE_SMB ?
2748 B_TRUE : B_FALSE)) {
2754 opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS ||
2755 zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ?
2756 SHAREFS_ADD : SHAREFS_REMOVE;
2759 * Add or remove share from sharetab
2761 error = zshare_fs(opcode,
2762 (void *)(uintptr_t)zc->zc_share.z_sharedata,
2763 zc->zc_share.z_sharemax);
2770 * pool create, destroy, and export don't log the history as part of
2771 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export
2772 * do the logging of those commands.
2774 static zfs_ioc_vec_t zfs_ioc_vec[] = {
2775 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2776 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2777 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2778 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2779 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE },
2780 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE },
2781 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE },
2782 { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2783 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE },
2784 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2785 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2786 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2787 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2788 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2789 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2790 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2791 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2792 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
2793 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
2794 { zfs_ioc_dataset_list_next, zfs_secpolicy_read,
2795 DATASET_NAME, B_FALSE },
2796 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read,
2797 DATASET_NAME, B_FALSE },
2798 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE },
2799 { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE },
2800 { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE },
2801 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE },
2802 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE },
2803 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE },
2804 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE },
2805 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE },
2806 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE },
2807 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE },
2808 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE },
2809 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE },
2810 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE },
2811 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2812 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE },
2813 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE },
2814 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE },
2815 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE },
2816 { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE },
2817 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE },
2818 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE },
2819 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE },
2820 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
2821 { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi,
2822 DATASET_NAME, B_FALSE },
2823 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE },
2824 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE },
2828 zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp)
2834 if (getminor(dev) != 0)
2835 return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp));
2837 vec = cmd - ZFS_IOC;
2838 ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip));
2840 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
2843 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
2845 error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t));
2848 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr);
2851 * Ensure that all pool/dataset names are valid before we pass down to
2855 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
2856 switch (zfs_ioc_vec[vec].zvec_namecheck) {
2858 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
2863 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
2873 error = zfs_ioc_vec[vec].zvec_func(zc);
2875 rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t));
2878 if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE)
2879 zfs_log_history(zc);
2882 kmem_free(zc, sizeof (zfs_cmd_t));
2887 zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
2889 if (cmd != DDI_ATTACH)
2890 return (DDI_FAILURE);
2892 if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0,
2893 DDI_PSEUDO, 0) == DDI_FAILURE)
2894 return (DDI_FAILURE);
2898 ddi_report_dev(dip);
2900 return (DDI_SUCCESS);
2904 zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
2906 if (spa_busy() || zfs_busy() || zvol_busy())
2907 return (DDI_FAILURE);
2909 if (cmd != DDI_DETACH)
2910 return (DDI_FAILURE);
2914 ddi_prop_remove_all(dip);
2915 ddi_remove_minor_node(dip, NULL);
2917 return (DDI_SUCCESS);
2922 zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
2925 case DDI_INFO_DEVT2DEVINFO:
2927 return (DDI_SUCCESS);
2929 case DDI_INFO_DEVT2INSTANCE:
2930 *result = (void *)0;
2931 return (DDI_SUCCESS);
2934 return (DDI_FAILURE);
2938 * OK, so this is a little weird.
2940 * /dev/zfs is the control node, i.e. minor 0.
2941 * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0.
2943 * /dev/zfs has basically nothing to do except serve up ioctls,
2944 * so most of the standard driver entry points are in zvol.c.
2946 static struct cb_ops zfs_cb_ops = {
2947 zvol_open, /* open */
2948 zvol_close, /* close */
2949 zvol_strategy, /* strategy */
2951 zvol_dump, /* dump */
2952 zvol_read, /* read */
2953 zvol_write, /* write */
2954 zfsdev_ioctl, /* ioctl */
2958 nochpoll, /* poll */
2959 ddi_prop_op, /* prop_op */
2960 NULL, /* streamtab */
2961 D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */
2962 CB_REV, /* version */
2963 nodev, /* async read */
2964 nodev, /* async write */
2967 static struct dev_ops zfs_dev_ops = {
2968 DEVO_REV, /* version */
2970 zfs_info, /* info */
2971 nulldev, /* identify */
2972 nulldev, /* probe */
2973 zfs_attach, /* attach */
2974 zfs_detach, /* detach */
2976 &zfs_cb_ops, /* driver operations */
2977 NULL /* no bus operations */
2980 static struct modldrv zfs_modldrv = {
2981 &mod_driverops, "ZFS storage pool version " SPA_VERSION_STRING,
2985 static struct modlinkage modlinkage = {
2987 (void *)&zfs_modlfs,
2988 (void *)&zfs_modldrv,
2993 uint_t zfs_fsyncer_key;
2994 extern uint_t rrw_tsd_key;
3001 spa_init(FREAD | FWRITE);
3005 if ((error = mod_install(&modlinkage)) != 0) {
3012 tsd_create(&zfs_fsyncer_key, NULL);
3013 tsd_create(&rrw_tsd_key, NULL);
3015 error = ldi_ident_from_mod(&modlinkage, &zfs_li);
3017 mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL);
3027 if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled)
3030 if ((error = mod_remove(&modlinkage)) != 0)
3036 if (zfs_nfsshare_inited)
3037 (void) ddi_modclose(nfs_mod);
3038 if (zfs_smbshare_inited)
3039 (void) ddi_modclose(smbsrv_mod);
3040 if (zfs_nfsshare_inited || zfs_smbshare_inited)
3041 (void) ddi_modclose(sharefs_mod);
3043 tsd_destroy(&zfs_fsyncer_key);
3044 ldi_ident_release(zfs_li);
3046 mutex_destroy(&zfs_share_lock);
3052 _info(struct modinfo *modinfop)
3054 return (mod_info(&modlinkage, modinfop));