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)
88 /* flag #18 is reserved for a Delphix feature */
89 #define DMU_BACKUP_FEATURE_LARGE_BLOCKS (1<<19)
92 * Mask of all supported backup features
94 #define DMU_BACKUP_FEATURE_MASK (DMU_BACKUP_FEATURE_DEDUP | \
95 DMU_BACKUP_FEATURE_DEDUPPROPS | DMU_BACKUP_FEATURE_SA_SPILL | \
96 DMU_BACKUP_FEATURE_EMBED_DATA | DMU_BACKUP_FEATURE_EMBED_DATA_LZ4 | \
97 DMU_BACKUP_FEATURE_LARGE_BLOCKS)
99 /* Are all features in the given flag word currently supported? */
100 #define DMU_STREAM_SUPPORTED(x) (!((x) & ~DMU_BACKUP_FEATURE_MASK))
103 * The drr_versioninfo field of the dmu_replay_record has the
106 * 64 56 48 40 32 24 16 8 0
107 * +-------+-------+-------+-------+-------+-------+-------+-------+
108 * | reserved | feature-flags |C|S|
109 * +-------+-------+-------+-------+-------+-------+-------+-------+
111 * The low order two bits indicate the header type: SUBSTREAM (0x1)
112 * or COMPOUNDSTREAM (0x2). Using two bits for this is historical:
113 * this field used to be a version number, where the two version types
114 * were 1 and 2. Using two bits for this allows earlier versions of
115 * the code to be able to recognize send streams that don't use any
116 * of the features indicated by feature flags.
119 #define DMU_BACKUP_MAGIC 0x2F5bacbacULL
121 #define DRR_FLAG_CLONE (1<<0)
122 #define DRR_FLAG_CI_DATA (1<<1)
125 * flags in the drr_checksumflags field in the DRR_WRITE and
126 * DRR_WRITE_BYREF blocks
128 #define DRR_CHECKSUM_DEDUP (1<<0)
130 #define DRR_IS_DEDUP_CAPABLE(flags) ((flags) & DRR_CHECKSUM_DEDUP)
133 * zfs ioctl command structure
137 uint64_t drr_versioninfo; /* was drr_version */
138 uint64_t drr_creation_time;
139 dmu_objset_type_t drr_type;
142 uint64_t drr_fromguid;
143 char drr_toname[MAXNAMELEN];
147 zio_cksum_t drr_checksum;
153 dmu_object_type_t drr_type;
154 dmu_object_type_t drr_bonustype;
156 uint32_t drr_bonuslen;
157 uint8_t drr_checksumtype;
158 uint8_t drr_compress;
161 /* bonus content follows */
164 struct drr_freeobjects {
165 uint64_t drr_firstobj;
166 uint64_t drr_numobjs;
172 dmu_object_type_t drr_type;
177 uint8_t drr_checksumtype;
178 uint8_t drr_checksumflags;
180 ddt_key_t drr_key; /* deduplication key */
181 /* content follows */
191 struct drr_write_byref {
192 /* where to put the data */
197 /* where to find the prior copy of the data */
198 uint64_t drr_refguid;
199 uint64_t drr_refobject;
200 uint64_t drr_refoffset;
201 /* properties of the data */
202 uint8_t drr_checksumtype;
203 uint8_t drr_checksumflags;
205 ddt_key_t drr_key; /* deduplication key */
212 uint64_t drr_pad[4]; /* needed for crypto */
213 /* spill data follows */
216 typedef struct dmu_replay_record {
218 DRR_BEGIN, DRR_OBJECT, DRR_FREEOBJECTS,
219 DRR_WRITE, DRR_FREE, DRR_END, DRR_WRITE_BYREF,
220 DRR_SPILL, DRR_WRITE_EMBEDDED, DRR_NUMTYPES
222 uint32_t drr_payloadlen;
224 struct drr_begin drr_begin;
225 struct drr_end drr_end;
226 struct drr_object drr_object;
227 struct drr_freeobjects drr_freeobjects;
228 struct drr_write drr_write;
229 struct drr_free drr_free;
230 struct drr_write_byref drr_write_byref;
231 struct drr_spill drr_spill;
232 struct drr_write_embedded {
235 /* logical length, should equal blocksize */
238 uint8_t drr_compression;
241 uint32_t drr_lsize; /* uncompressed size of payload */
242 uint32_t drr_psize; /* compr. (real) size of payload */
243 /* (possibly compressed) content follows */
244 } drr_write_embedded;
246 } dmu_replay_record_t;
248 /* diff record range types */
249 typedef enum diff_type {
256 * The diff reports back ranges of free or in-use objects.
258 typedef struct dmu_diff_record {
264 typedef struct zinject_record {
274 uint32_t zi_failfast;
275 char zi_func[MAXNAMELEN];
283 #define ZINJECT_NULL 0x1
284 #define ZINJECT_FLUSH_ARC 0x2
285 #define ZINJECT_UNLOAD_SPA 0x4
287 typedef enum zinject_type {
288 ZINJECT_UNINITIALIZED,
290 ZINJECT_DEVICE_FAULT,
292 ZINJECT_IGNORED_WRITES,
297 typedef struct zfs_share {
298 uint64_t z_exportdata;
299 uint64_t z_sharedata;
300 uint64_t z_sharetype; /* 0 = share, 1 = unshare */
301 uint64_t z_sharemax; /* max length of share string */
305 * ZFS file systems may behave the usual, POSIX-compliant way, where
306 * name lookups are case-sensitive. They may also be set up so that
307 * all the name lookups are case-insensitive, or so that only some
308 * lookups, the ones that set an FIGNORECASE flag, are case-insensitive.
310 typedef enum zfs_case {
312 ZFS_CASE_INSENSITIVE,
316 typedef struct zfs_cmd {
317 char zc_name[MAXPATHLEN]; /* name of pool or dataset */
318 uint64_t zc_nvlist_src; /* really (char *) */
319 uint64_t zc_nvlist_src_size;
320 uint64_t zc_nvlist_dst; /* really (char *) */
321 uint64_t zc_nvlist_dst_size;
322 boolean_t zc_nvlist_dst_filled; /* put an nvlist in dst? */
326 * The following members are for legacy ioctls which haven't been
327 * converted to the new method.
329 uint64_t zc_history; /* really (char *) */
330 char zc_value[MAXPATHLEN * 2];
331 char zc_string[MAXNAMELEN];
333 uint64_t zc_nvlist_conf; /* really (char *) */
334 uint64_t zc_nvlist_conf_size;
336 uint64_t zc_objset_type;
337 uint64_t zc_perm_action;
338 uint64_t zc_history_len;
339 uint64_t zc_history_offset;
341 uint64_t zc_iflags; /* internal to zfs(7fs) */
342 zfs_share_t zc_share;
344 dmu_objset_stats_t zc_objset_stats;
345 struct drr_begin zc_begin_record;
346 zinject_record_t zc_inject_record;
347 uint32_t zc_defer_destroy;
349 uint64_t zc_action_handle;
352 uint8_t zc_pad[3]; /* alignment */
355 uint64_t zc_createtxg;
359 typedef struct zfs_useracct {
366 #define ZFSDEV_MAX_MINOR (1 << 16)
367 #define ZFS_MIN_MINOR (ZFSDEV_MAX_MINOR + 1)
369 #define ZPOOL_EXPORT_AFTER_SPLIT 0x1
373 typedef struct zfs_creat {
374 nvlist_t *zct_zplprops;
378 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
379 extern int zfs_secpolicy_rename_perms(const char *from,
380 const char *to, cred_t *cr);
381 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
382 extern int zfs_busy(void);
383 extern int zfs_unmount_snap(const char *);
384 extern void zfs_destroy_unmount_origin(const char *);
387 * ZFS minor numbers can refer to either a control device instance or
388 * a zvol. Depending on the value of zss_type, zss_data points to either
389 * a zvol_state_t or a zfs_onexit_t.
391 enum zfs_soft_state_type {
396 typedef struct zfs_soft_state {
397 enum zfs_soft_state_type zss_type;
401 extern void *zfsdev_get_soft_state(minor_t minor,
402 enum zfs_soft_state_type which);
403 extern minor_t zfsdev_minor_alloc(void);
405 extern void *zfsdev_state;
413 #endif /* _SYS_ZFS_IOCTL_H */