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.
23 * Copyright (c) 2013 by Delphix. All rights reserved.
26 #ifndef _SYS_ZFS_IOCTL_H
27 #define _SYS_ZFS_IOCTL_H
32 #include <sys/dsl_deleg.h>
34 #include <sys/zfs_stat.h>
37 #include <sys/nvpair.h>
45 * The structures in this file are passed between userland and the
46 * kernel. Userland may be running a 32-bit process, while the kernel
47 * is 64-bit. Therefore, these structures need to compile the same in
48 * 32-bit and 64-bit. This means not using type "long", and adding
49 * explicit padding so that the 32-bit structure will not be packed more
50 * tightly than the 64-bit structure (which requires 64-bit alignment).
54 * Property values for snapdir
56 #define ZFS_SNAPDIR_HIDDEN 0
57 #define ZFS_SNAPDIR_VISIBLE 1
60 * Field manipulation macros for the drr_versioninfo field of the
65 * Header types for zfs send streams.
67 typedef enum drr_headertype {
69 DMU_COMPOUNDSTREAM = 0x2
72 #define DMU_GET_STREAM_HDRTYPE(vi) BF64_GET((vi), 0, 2)
73 #define DMU_SET_STREAM_HDRTYPE(vi, x) BF64_SET((vi), 0, 2, x)
75 #define DMU_GET_FEATUREFLAGS(vi) BF64_GET((vi), 2, 30)
76 #define DMU_SET_FEATUREFLAGS(vi, x) BF64_SET((vi), 2, 30, x)
79 * Feature flags for zfs send streams (flags in drr_versioninfo)
82 #define DMU_BACKUP_FEATURE_DEDUP (1<<0)
83 #define DMU_BACKUP_FEATURE_DEDUPPROPS (1<<1)
84 #define DMU_BACKUP_FEATURE_SA_SPILL (1<<2)
85 /* flags #3 - #15 are reserved for incompatible closed-source implementations */
86 #define DMU_BACKUP_FEATURE_EMBED_DATA (1<<16)
87 #define DMU_BACKUP_FEATURE_EMBED_DATA_LZ4 (1<<17)
90 * Mask of all supported backup features
92 #define DMU_BACKUP_FEATURE_MASK (DMU_BACKUP_FEATURE_DEDUP | \
93 DMU_BACKUP_FEATURE_DEDUPPROPS | DMU_BACKUP_FEATURE_SA_SPILL | \
94 DMU_BACKUP_FEATURE_EMBED_DATA | DMU_BACKUP_FEATURE_EMBED_DATA_LZ4)
96 /* Are all features in the given flag word currently supported? */
97 #define DMU_STREAM_SUPPORTED(x) (!((x) & ~DMU_BACKUP_FEATURE_MASK))
100 * The drr_versioninfo field of the dmu_replay_record has the
103 * 64 56 48 40 32 24 16 8 0
104 * +-------+-------+-------+-------+-------+-------+-------+-------+
105 * | reserved | feature-flags |C|S|
106 * +-------+-------+-------+-------+-------+-------+-------+-------+
108 * The low order two bits indicate the header type: SUBSTREAM (0x1)
109 * or COMPOUNDSTREAM (0x2). Using two bits for this is historical:
110 * this field used to be a version number, where the two version types
111 * were 1 and 2. Using two bits for this allows earlier versions of
112 * the code to be able to recognize send streams that don't use any
113 * of the features indicated by feature flags.
116 #define DMU_BACKUP_MAGIC 0x2F5bacbacULL
118 #define DRR_FLAG_CLONE (1<<0)
119 #define DRR_FLAG_CI_DATA (1<<1)
122 * flags in the drr_checksumflags field in the DRR_WRITE and
123 * DRR_WRITE_BYREF blocks
125 #define DRR_CHECKSUM_DEDUP (1<<0)
127 #define DRR_IS_DEDUP_CAPABLE(flags) ((flags) & DRR_CHECKSUM_DEDUP)
130 * zfs ioctl command structure
134 uint64_t drr_versioninfo; /* was drr_version */
135 uint64_t drr_creation_time;
136 dmu_objset_type_t drr_type;
139 uint64_t drr_fromguid;
140 char drr_toname[MAXNAMELEN];
144 zio_cksum_t drr_checksum;
150 dmu_object_type_t drr_type;
151 dmu_object_type_t drr_bonustype;
153 uint32_t drr_bonuslen;
154 uint8_t drr_checksumtype;
155 uint8_t drr_compress;
158 /* bonus content follows */
161 struct drr_freeobjects {
162 uint64_t drr_firstobj;
163 uint64_t drr_numobjs;
169 dmu_object_type_t drr_type;
174 uint8_t drr_checksumtype;
175 uint8_t drr_checksumflags;
177 ddt_key_t drr_key; /* deduplication key */
178 /* content follows */
188 struct drr_write_byref {
189 /* where to put the data */
194 /* where to find the prior copy of the data */
195 uint64_t drr_refguid;
196 uint64_t drr_refobject;
197 uint64_t drr_refoffset;
198 /* properties of the data */
199 uint8_t drr_checksumtype;
200 uint8_t drr_checksumflags;
202 ddt_key_t drr_key; /* deduplication key */
209 uint64_t drr_pad[4]; /* needed for crypto */
210 /* spill data follows */
213 typedef struct dmu_replay_record {
215 DRR_BEGIN, DRR_OBJECT, DRR_FREEOBJECTS,
216 DRR_WRITE, DRR_FREE, DRR_END, DRR_WRITE_BYREF,
217 DRR_SPILL, DRR_WRITE_EMBEDDED, DRR_NUMTYPES
219 uint32_t drr_payloadlen;
221 struct drr_begin drr_begin;
222 struct drr_end drr_end;
223 struct drr_object drr_object;
224 struct drr_freeobjects drr_freeobjects;
225 struct drr_write drr_write;
226 struct drr_free drr_free;
227 struct drr_write_byref drr_write_byref;
228 struct drr_spill drr_spill;
229 struct drr_write_embedded {
232 /* logical length, should equal blocksize */
235 uint8_t drr_compression;
238 uint32_t drr_lsize; /* uncompressed size of payload */
239 uint32_t drr_psize; /* compr. (real) size of payload */
240 /* (possibly compressed) content follows */
241 } drr_write_embedded;
243 } dmu_replay_record_t;
245 /* diff record range types */
246 typedef enum diff_type {
253 * The diff reports back ranges of free or in-use objects.
255 typedef struct dmu_diff_record {
261 typedef struct zinject_record {
271 uint32_t zi_failfast;
272 char zi_func[MAXNAMELEN];
280 #define ZINJECT_NULL 0x1
281 #define ZINJECT_FLUSH_ARC 0x2
282 #define ZINJECT_UNLOAD_SPA 0x4
284 typedef enum zinject_type {
285 ZINJECT_UNINITIALIZED,
287 ZINJECT_DEVICE_FAULT,
289 ZINJECT_IGNORED_WRITES,
294 typedef struct zfs_share {
295 uint64_t z_exportdata;
296 uint64_t z_sharedata;
297 uint64_t z_sharetype; /* 0 = share, 1 = unshare */
298 uint64_t z_sharemax; /* max length of share string */
302 * ZFS file systems may behave the usual, POSIX-compliant way, where
303 * name lookups are case-sensitive. They may also be set up so that
304 * all the name lookups are case-insensitive, or so that only some
305 * lookups, the ones that set an FIGNORECASE flag, are case-insensitive.
307 typedef enum zfs_case {
309 ZFS_CASE_INSENSITIVE,
313 typedef struct zfs_cmd {
314 char zc_name[MAXPATHLEN]; /* name of pool or dataset */
315 uint64_t zc_nvlist_src; /* really (char *) */
316 uint64_t zc_nvlist_src_size;
317 uint64_t zc_nvlist_dst; /* really (char *) */
318 uint64_t zc_nvlist_dst_size;
319 boolean_t zc_nvlist_dst_filled; /* put an nvlist in dst? */
323 * The following members are for legacy ioctls which haven't been
324 * converted to the new method.
326 uint64_t zc_history; /* really (char *) */
327 char zc_value[MAXPATHLEN * 2];
328 char zc_string[MAXNAMELEN];
330 uint64_t zc_nvlist_conf; /* really (char *) */
331 uint64_t zc_nvlist_conf_size;
333 uint64_t zc_objset_type;
334 uint64_t zc_perm_action;
335 uint64_t zc_history_len;
336 uint64_t zc_history_offset;
338 uint64_t zc_iflags; /* internal to zfs(7fs) */
339 zfs_share_t zc_share;
341 dmu_objset_stats_t zc_objset_stats;
342 struct drr_begin zc_begin_record;
343 zinject_record_t zc_inject_record;
344 uint32_t zc_defer_destroy;
346 uint64_t zc_action_handle;
349 uint8_t zc_pad[3]; /* alignment */
352 uint64_t zc_createtxg;
356 typedef struct zfs_useracct {
363 #define ZFSDEV_MAX_MINOR (1 << 16)
364 #define ZFS_MIN_MINOR (ZFSDEV_MAX_MINOR + 1)
366 #define ZPOOL_EXPORT_AFTER_SPLIT 0x1
370 typedef struct zfs_creat {
371 nvlist_t *zct_zplprops;
375 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
376 extern int zfs_secpolicy_rename_perms(const char *from,
377 const char *to, cred_t *cr);
378 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
379 extern int zfs_busy(void);
380 extern int zfs_unmount_snap(const char *);
381 extern void zfs_destroy_unmount_origin(const char *);
384 * ZFS minor numbers can refer to either a control device instance or
385 * a zvol. Depending on the value of zss_type, zss_data points to either
386 * a zvol_state_t or a zfs_onexit_t.
388 enum zfs_soft_state_type {
393 typedef struct zfs_soft_state {
394 enum zfs_soft_state_type zss_type;
398 extern void *zfsdev_get_soft_state(minor_t minor,
399 enum zfs_soft_state_type which);
400 extern minor_t zfsdev_minor_alloc(void);
402 extern void *zfsdev_state;
410 #endif /* _SYS_ZFS_IOCTL_H */