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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
25 #ifndef _SYS_ZFS_IOCTL_H
26 #define _SYS_ZFS_IOCTL_H
31 #include <sys/dsl_deleg.h>
33 #include <sys/zfs_stat.h>
36 #include <sys/nvpair.h>
44 * Property values for snapdir
46 #define ZFS_SNAPDIR_HIDDEN 0
47 #define ZFS_SNAPDIR_VISIBLE 1
50 * Field manipulation macros for the drr_versioninfo field of the
55 * Header types for zfs send streams.
57 typedef enum drr_headertype {
59 DMU_COMPOUNDSTREAM = 0x2
62 #define DMU_GET_STREAM_HDRTYPE(vi) BF64_GET((vi), 0, 2)
63 #define DMU_SET_STREAM_HDRTYPE(vi, x) BF64_SET((vi), 0, 2, x)
65 #define DMU_GET_FEATUREFLAGS(vi) BF64_GET((vi), 2, 30)
66 #define DMU_SET_FEATUREFLAGS(vi, x) BF64_SET((vi), 2, 30, x)
69 * Feature flags for zfs send streams (flags in drr_versioninfo)
72 #define DMU_BACKUP_FEATURE_DEDUP (0x1)
73 #define DMU_BACKUP_FEATURE_DEDUPPROPS (0x2)
74 #define DMU_BACKUP_FEATURE_SA_SPILL (0x4)
77 * Mask of all supported backup features
79 #define DMU_BACKUP_FEATURE_MASK (DMU_BACKUP_FEATURE_DEDUP | \
80 DMU_BACKUP_FEATURE_DEDUPPROPS | DMU_BACKUP_FEATURE_SA_SPILL)
82 /* Are all features in the given flag word currently supported? */
83 #define DMU_STREAM_SUPPORTED(x) (!((x) & ~DMU_BACKUP_FEATURE_MASK))
86 * The drr_versioninfo field of the dmu_replay_record has the
89 * 64 56 48 40 32 24 16 8 0
90 * +-------+-------+-------+-------+-------+-------+-------+-------+
91 * | reserved | feature-flags |C|S|
92 * +-------+-------+-------+-------+-------+-------+-------+-------+
94 * The low order two bits indicate the header type: SUBSTREAM (0x1)
95 * or COMPOUNDSTREAM (0x2). Using two bits for this is historical:
96 * this field used to be a version number, where the two version types
97 * were 1 and 2. Using two bits for this allows earlier versions of
98 * the code to be able to recognize send streams that don't use any
99 * of the features indicated by feature flags.
102 #define DMU_BACKUP_MAGIC 0x2F5bacbacULL
104 #define DRR_FLAG_CLONE (1<<0)
105 #define DRR_FLAG_CI_DATA (1<<1)
108 * flags in the drr_checksumflags field in the DRR_WRITE and
109 * DRR_WRITE_BYREF blocks
111 #define DRR_CHECKSUM_DEDUP (1<<0)
113 #define DRR_IS_DEDUP_CAPABLE(flags) ((flags) & DRR_CHECKSUM_DEDUP)
116 * zfs ioctl command structure
118 typedef struct dmu_replay_record {
120 DRR_BEGIN, DRR_OBJECT, DRR_FREEOBJECTS,
121 DRR_WRITE, DRR_FREE, DRR_END, DRR_WRITE_BYREF,
122 DRR_SPILL, DRR_NUMTYPES
124 uint32_t drr_payloadlen;
128 uint64_t drr_versioninfo; /* was drr_version */
129 uint64_t drr_creation_time;
130 dmu_objset_type_t drr_type;
133 uint64_t drr_fromguid;
134 char drr_toname[MAXNAMELEN];
137 zio_cksum_t drr_checksum;
142 dmu_object_type_t drr_type;
143 dmu_object_type_t drr_bonustype;
145 uint32_t drr_bonuslen;
146 uint8_t drr_checksumtype;
147 uint8_t drr_compress;
150 /* bonus content follows */
152 struct drr_freeobjects {
153 uint64_t drr_firstobj;
154 uint64_t drr_numobjs;
159 dmu_object_type_t drr_type;
164 uint8_t drr_checksumtype;
165 uint8_t drr_checksumflags;
167 ddt_key_t drr_key; /* deduplication key */
168 /* content follows */
176 struct drr_write_byref {
177 /* where to put the data */
182 /* where to find the prior copy of the data */
183 uint64_t drr_refguid;
184 uint64_t drr_refobject;
185 uint64_t drr_refoffset;
186 /* properties of the data */
187 uint8_t drr_checksumtype;
188 uint8_t drr_checksumflags;
190 ddt_key_t drr_key; /* deduplication key */
196 uint64_t drr_pad[4]; /* needed for crypto */
197 /* spill data follows */
200 } dmu_replay_record_t;
202 /* diff record range types */
203 typedef enum diff_type {
210 * The diff reports back ranges of free or in-use objects.
212 typedef struct dmu_diff_record {
218 typedef struct zinject_record {
228 uint32_t zi_failfast;
229 char zi_func[MAXNAMELEN];
235 #define ZINJECT_NULL 0x1
236 #define ZINJECT_FLUSH_ARC 0x2
237 #define ZINJECT_UNLOAD_SPA 0x4
239 #define ZEVENT_NONBLOCK 0x1
240 #define ZEVENT_SIZE 1024
242 typedef struct zfs_share {
243 uint64_t z_exportdata;
244 uint64_t z_sharedata;
245 uint64_t z_sharetype; /* 0 = share, 1 = unshare */
246 uint64_t z_sharemax; /* max length of share string */
250 * ZFS file systems may behave the usual, POSIX-compliant way, where
251 * name lookups are case-sensitive. They may also be set up so that
252 * all the name lookups are case-insensitive, or so that only some
253 * lookups, the ones that set an FIGNORECASE flag, are case-insensitive.
255 typedef enum zfs_case {
257 ZFS_CASE_INSENSITIVE,
261 typedef struct zfs_cmd {
262 char zc_name[MAXPATHLEN];
263 char zc_value[MAXPATHLEN * 2];
264 char zc_string[MAXNAMELEN];
265 char zc_top_ds[MAXPATHLEN];
267 uint64_t zc_nvlist_conf; /* really (char *) */
268 uint64_t zc_nvlist_conf_size;
269 uint64_t zc_nvlist_src; /* really (char *) */
270 uint64_t zc_nvlist_src_size;
271 uint64_t zc_nvlist_dst; /* really (char *) */
272 uint64_t zc_nvlist_dst_size;
274 uint64_t zc_objset_type;
275 uint64_t zc_perm_action;
276 uint64_t zc_history; /* really (char *) */
277 uint64_t zc_history_len;
278 uint64_t zc_history_offset;
280 uint64_t zc_iflags; /* internal to zfs(7fs) */
281 zfs_share_t zc_share;
282 dmu_objset_stats_t zc_objset_stats;
283 struct drr_begin zc_begin_record;
284 zinject_record_t zc_inject_record;
285 boolean_t zc_defer_destroy;
286 boolean_t zc_temphold;
287 uint64_t zc_action_handle;
289 uint8_t zc_pad[4]; /* alignment */
292 uint64_t zc_createtxg;
296 typedef struct zfs_useracct {
303 #define ZFSDEV_MAX_MINOR (1 << 16)
304 #define ZFS_MIN_MINOR (ZFSDEV_MAX_MINOR + 1)
306 #define ZPOOL_EXPORT_AFTER_SPLIT 0x1
310 typedef struct zfs_creat {
311 nvlist_t *zct_zplprops;
315 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
316 extern int zfs_secpolicy_rename_perms(const char *from,
317 const char *to, cred_t *cr);
318 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
319 extern int zfs_unmount_snap(const char *, void *);
321 enum zfsdev_state_type {
327 typedef struct zfsdev_state {
328 list_node_t zs_next; /* next zfsdev_state_t link */
329 struct file *zs_file; /* associated file struct */
330 minor_t zs_minor; /* made up minor number */
331 void *zs_onexit; /* onexit data */
332 void *zs_zevent; /* zevent data */
335 extern void *zfsdev_get_state(minor_t minor, enum zfsdev_state_type which);
336 extern minor_t zfsdev_getminor(struct file *filp);
337 extern minor_t zfsdev_minor_alloc(void);
345 #endif /* _SYS_ZFS_IOCTL_H */