1 /* 2 * CDDL HEADER START 3 * 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. 7 * 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. 12 * 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] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright (c) 2012, 2020 by Delphix. All rights reserved. 24 * Copyright 2016 RackTop Systems. 25 * Copyright (c) 2017, Intel Corporation. 26 */ 27 28 #ifndef _SYS_ZFS_IOCTL_H 29 #define _SYS_ZFS_IOCTL_H 30 31 #include <sys/cred.h> 32 #include <sys/dmu.h> 33 #include <sys/zio.h> 34 #include <sys/dsl_deleg.h> 35 #include <sys/spa.h> 36 #include <sys/zfs_stat.h> 37 38 #ifdef _KERNEL 39 #include <sys/nvpair.h> 40 #endif /* _KERNEL */ 41 42 #ifdef __cplusplus 43 extern "C" { 44 #endif 45 46 /* 47 * The structures in this file are passed between userland and the 48 * kernel. Userland may be running a 32-bit process, while the kernel 49 * is 64-bit. Therefore, these structures need to compile the same in 50 * 32-bit and 64-bit. This means not using type "long", and adding 51 * explicit padding so that the 32-bit structure will not be packed more 52 * tightly than the 64-bit structure (which requires 64-bit alignment). 53 */ 54 55 /* 56 * Property values for snapdir 57 */ 58 #define ZFS_SNAPDIR_HIDDEN 0 59 #define ZFS_SNAPDIR_VISIBLE 1 60 61 /* 62 * Property values for snapdev 63 */ 64 #define ZFS_SNAPDEV_HIDDEN 0 65 #define ZFS_SNAPDEV_VISIBLE 1 66 /* 67 * Property values for acltype 68 */ 69 #define ZFS_ACLTYPE_OFF 0 70 #define ZFS_ACLTYPE_POSIX 1 71 #define ZFS_ACLTYPE_NFSV4 2 72 73 /* 74 * Field manipulation macros for the drr_versioninfo field of the 75 * send stream header. 76 */ 77 78 /* 79 * Header types for zfs send streams. 80 */ 81 typedef enum drr_headertype { 82 DMU_SUBSTREAM = 0x1, 83 DMU_COMPOUNDSTREAM = 0x2 84 } drr_headertype_t; 85 86 #define DMU_GET_STREAM_HDRTYPE(vi) BF64_GET((vi), 0, 2) 87 #define DMU_SET_STREAM_HDRTYPE(vi, x) BF64_SET((vi), 0, 2, x) 88 89 #define DMU_GET_FEATUREFLAGS(vi) BF64_GET((vi), 2, 30) 90 #define DMU_SET_FEATUREFLAGS(vi, x) BF64_SET((vi), 2, 30, x) 91 92 /* 93 * Feature flags for zfs send streams (flags in drr_versioninfo) 94 */ 95 96 #define DMU_BACKUP_FEATURE_DEDUP (1 << 0) 97 #define DMU_BACKUP_FEATURE_DEDUPPROPS (1 << 1) 98 #define DMU_BACKUP_FEATURE_SA_SPILL (1 << 2) 99 /* flags #3 - #15 are reserved for incompatible closed-source implementations */ 100 #define DMU_BACKUP_FEATURE_EMBED_DATA (1 << 16) 101 #define DMU_BACKUP_FEATURE_LZ4 (1 << 17) 102 /* flag #18 is reserved for a Delphix feature */ 103 #define DMU_BACKUP_FEATURE_LARGE_BLOCKS (1 << 19) 104 #define DMU_BACKUP_FEATURE_RESUMING (1 << 20) 105 #define DMU_BACKUP_FEATURE_REDACTED (1 << 21) 106 #define DMU_BACKUP_FEATURE_COMPRESSED (1 << 22) 107 #define DMU_BACKUP_FEATURE_LARGE_DNODE (1 << 23) 108 #define DMU_BACKUP_FEATURE_RAW (1 << 24) 109 #define DMU_BACKUP_FEATURE_ZSTD (1 << 25) 110 #define DMU_BACKUP_FEATURE_HOLDS (1 << 26) 111 /* 112 * The SWITCH_TO_LARGE_BLOCKS feature indicates that we can receive 113 * incremental LARGE_BLOCKS streams (those with WRITE records of >128KB) even 114 * if the previous send did not use LARGE_BLOCKS, and thus its large blocks 115 * were split into multiple 128KB WRITE records. (See 116 * flush_write_batch_impl() and receive_object()). Older software that does 117 * not support this flag may encounter a bug when switching to large blocks, 118 * which causes files to incorrectly be zeroed. 119 * 120 * This flag is currently not set on any send streams. In the future, we 121 * intend for incremental send streams of snapshots that have large blocks to 122 * use LARGE_BLOCKS by default, and these streams will also have the 123 * SWITCH_TO_LARGE_BLOCKS feature set. This ensures that streams from the 124 * default use of "zfs send" won't encounter the bug mentioned above. 125 */ 126 #define DMU_BACKUP_FEATURE_SWITCH_TO_LARGE_BLOCKS (1 << 27) 127 128 /* 129 * Mask of all supported backup features 130 */ 131 #define DMU_BACKUP_FEATURE_MASK (DMU_BACKUP_FEATURE_SA_SPILL | \ 132 DMU_BACKUP_FEATURE_EMBED_DATA | DMU_BACKUP_FEATURE_LZ4 | \ 133 DMU_BACKUP_FEATURE_RESUMING | DMU_BACKUP_FEATURE_LARGE_BLOCKS | \ 134 DMU_BACKUP_FEATURE_COMPRESSED | DMU_BACKUP_FEATURE_LARGE_DNODE | \ 135 DMU_BACKUP_FEATURE_RAW | DMU_BACKUP_FEATURE_HOLDS | \ 136 DMU_BACKUP_FEATURE_REDACTED | DMU_BACKUP_FEATURE_SWITCH_TO_LARGE_BLOCKS | \ 137 DMU_BACKUP_FEATURE_ZSTD) 138 139 /* Are all features in the given flag word currently supported? */ 140 #define DMU_STREAM_SUPPORTED(x) (!((x) & ~DMU_BACKUP_FEATURE_MASK)) 141 142 typedef enum dmu_send_resume_token_version { 143 ZFS_SEND_RESUME_TOKEN_VERSION = 1 144 } dmu_send_resume_token_version_t; 145 146 /* 147 * The drr_versioninfo field of the dmu_replay_record has the 148 * following layout: 149 * 150 * 64 56 48 40 32 24 16 8 0 151 * +-------+-------+-------+-------+-------+-------+-------+-------+ 152 * | reserved | feature-flags |C|S| 153 * +-------+-------+-------+-------+-------+-------+-------+-------+ 154 * 155 * The low order two bits indicate the header type: SUBSTREAM (0x1) 156 * or COMPOUNDSTREAM (0x2). Using two bits for this is historical: 157 * this field used to be a version number, where the two version types 158 * were 1 and 2. Using two bits for this allows earlier versions of 159 * the code to be able to recognize send streams that don't use any 160 * of the features indicated by feature flags. 161 */ 162 163 #define DMU_BACKUP_MAGIC 0x2F5bacbacULL 164 165 /* 166 * Send stream flags. Bits 24-31 are reserved for vendor-specific 167 * implementations and should not be used. 168 */ 169 #define DRR_FLAG_CLONE (1<<0) 170 #define DRR_FLAG_CI_DATA (1<<1) 171 /* 172 * This send stream, if it is a full send, includes the FREE and FREEOBJECT 173 * records that are created by the sending process. This means that the send 174 * stream can be received as a clone, even though it is not an incremental. 175 * This is not implemented as a feature flag, because the receiving side does 176 * not need to have implemented it to receive this stream; it is fully backwards 177 * compatible. We need a flag, though, because full send streams without it 178 * cannot necessarily be received as a clone correctly. 179 */ 180 #define DRR_FLAG_FREERECORDS (1<<2) 181 /* 182 * When DRR_FLAG_SPILL_BLOCK is set it indicates the DRR_OBJECT_SPILL 183 * and DRR_SPILL_UNMODIFIED flags are meaningful in the send stream. 184 * 185 * When DRR_FLAG_SPILL_BLOCK is set, DRR_OBJECT records will have 186 * DRR_OBJECT_SPILL set if and only if they should have a spill block 187 * (either an existing one, or a new one in the send stream). When clear 188 * the object does not have a spill block and any existing spill block 189 * should be freed. 190 * 191 * Similarly, when DRR_FLAG_SPILL_BLOCK is set, DRR_SPILL records will 192 * have DRR_SPILL_UNMODIFIED set if and only if they were included for 193 * backward compatibility purposes, and can be safely ignored by new versions 194 * of zfs receive. Previous versions of ZFS which do not understand the 195 * DRR_FLAG_SPILL_BLOCK will process this record and recreate any missing 196 * spill blocks. 197 */ 198 #define DRR_FLAG_SPILL_BLOCK (1<<3) 199 200 /* 201 * flags in the drr_flags field in the DRR_WRITE, DRR_SPILL, DRR_OBJECT, 202 * DRR_WRITE_BYREF, and DRR_OBJECT_RANGE blocks 203 */ 204 #define DRR_CHECKSUM_DEDUP (1<<0) /* not used for SPILL records */ 205 #define DRR_RAW_BYTESWAP (1<<1) 206 #define DRR_OBJECT_SPILL (1<<2) /* OBJECT record has a spill block */ 207 #define DRR_SPILL_UNMODIFIED (1<<2) /* SPILL record for unmodified block */ 208 209 #define DRR_IS_DEDUP_CAPABLE(flags) ((flags) & DRR_CHECKSUM_DEDUP) 210 #define DRR_IS_RAW_BYTESWAPPED(flags) ((flags) & DRR_RAW_BYTESWAP) 211 #define DRR_OBJECT_HAS_SPILL(flags) ((flags) & DRR_OBJECT_SPILL) 212 #define DRR_SPILL_IS_UNMODIFIED(flags) ((flags) & DRR_SPILL_UNMODIFIED) 213 214 /* deal with compressed drr_write replay records */ 215 #define DRR_WRITE_COMPRESSED(drrw) ((drrw)->drr_compressiontype != 0) 216 #define DRR_WRITE_PAYLOAD_SIZE(drrw) \ 217 (DRR_WRITE_COMPRESSED(drrw) ? (drrw)->drr_compressed_size : \ 218 (drrw)->drr_logical_size) 219 #define DRR_SPILL_PAYLOAD_SIZE(drrs) \ 220 ((drrs)->drr_compressed_size ? \ 221 (drrs)->drr_compressed_size : (drrs)->drr_length) 222 #define DRR_OBJECT_PAYLOAD_SIZE(drro) \ 223 ((drro)->drr_raw_bonuslen != 0 ? \ 224 (drro)->drr_raw_bonuslen : P2ROUNDUP((drro)->drr_bonuslen, 8)) 225 226 /* 227 * zfs ioctl command structure 228 */ 229 230 /* Header is used in C++ so can't forward declare untagged struct */ 231 struct drr_begin { 232 uint64_t drr_magic; 233 uint64_t drr_versioninfo; /* was drr_version */ 234 uint64_t drr_creation_time; 235 dmu_objset_type_t drr_type; 236 uint32_t drr_flags; 237 uint64_t drr_toguid; 238 uint64_t drr_fromguid; 239 char drr_toname[MAXNAMELEN]; 240 }; 241 242 typedef struct dmu_replay_record { 243 enum { 244 DRR_BEGIN, DRR_OBJECT, DRR_FREEOBJECTS, 245 DRR_WRITE, DRR_FREE, DRR_END, DRR_WRITE_BYREF, 246 DRR_SPILL, DRR_WRITE_EMBEDDED, DRR_OBJECT_RANGE, DRR_REDACT, 247 DRR_NUMTYPES 248 } drr_type; 249 uint32_t drr_payloadlen; 250 union { 251 struct drr_begin drr_begin; 252 struct drr_end { 253 zio_cksum_t drr_checksum; 254 uint64_t drr_toguid; 255 } drr_end; 256 struct drr_object { 257 uint64_t drr_object; 258 dmu_object_type_t drr_type; 259 dmu_object_type_t drr_bonustype; 260 uint32_t drr_blksz; 261 uint32_t drr_bonuslen; 262 uint8_t drr_checksumtype; 263 uint8_t drr_compress; 264 uint8_t drr_dn_slots; 265 uint8_t drr_flags; 266 uint32_t drr_raw_bonuslen; 267 uint64_t drr_toguid; 268 /* only (possibly) nonzero for raw streams */ 269 uint8_t drr_indblkshift; 270 uint8_t drr_nlevels; 271 uint8_t drr_nblkptr; 272 uint8_t drr_pad[5]; 273 uint64_t drr_maxblkid; 274 /* bonus content follows */ 275 } drr_object; 276 struct drr_freeobjects { 277 uint64_t drr_firstobj; 278 uint64_t drr_numobjs; 279 uint64_t drr_toguid; 280 } drr_freeobjects; 281 struct drr_write { 282 uint64_t drr_object; 283 dmu_object_type_t drr_type; 284 uint32_t drr_pad; 285 uint64_t drr_offset; 286 uint64_t drr_logical_size; 287 uint64_t drr_toguid; 288 uint8_t drr_checksumtype; 289 uint8_t drr_flags; 290 uint8_t drr_compressiontype; 291 uint8_t drr_pad2[5]; 292 /* deduplication key */ 293 ddt_key_t drr_key; 294 /* only nonzero if drr_compressiontype is not 0 */ 295 uint64_t drr_compressed_size; 296 /* only nonzero for raw streams */ 297 uint8_t drr_salt[ZIO_DATA_SALT_LEN]; 298 uint8_t drr_iv[ZIO_DATA_IV_LEN]; 299 uint8_t drr_mac[ZIO_DATA_MAC_LEN]; 300 /* content follows */ 301 } drr_write; 302 struct drr_free { 303 uint64_t drr_object; 304 uint64_t drr_offset; 305 uint64_t drr_length; 306 uint64_t drr_toguid; 307 } drr_free; 308 struct drr_write_byref { 309 /* where to put the data */ 310 uint64_t drr_object; 311 uint64_t drr_offset; 312 uint64_t drr_length; 313 uint64_t drr_toguid; 314 /* where to find the prior copy of the data */ 315 uint64_t drr_refguid; 316 uint64_t drr_refobject; 317 uint64_t drr_refoffset; 318 /* properties of the data */ 319 uint8_t drr_checksumtype; 320 uint8_t drr_flags; 321 uint8_t drr_pad2[6]; 322 ddt_key_t drr_key; /* deduplication key */ 323 } drr_write_byref; 324 struct drr_spill { 325 uint64_t drr_object; 326 uint64_t drr_length; 327 uint64_t drr_toguid; 328 uint8_t drr_flags; 329 uint8_t drr_compressiontype; 330 uint8_t drr_pad[6]; 331 /* only nonzero for raw streams */ 332 uint64_t drr_compressed_size; 333 uint8_t drr_salt[ZIO_DATA_SALT_LEN]; 334 uint8_t drr_iv[ZIO_DATA_IV_LEN]; 335 uint8_t drr_mac[ZIO_DATA_MAC_LEN]; 336 dmu_object_type_t drr_type; 337 /* spill data follows */ 338 } drr_spill; 339 struct drr_write_embedded { 340 uint64_t drr_object; 341 uint64_t drr_offset; 342 /* logical length, should equal blocksize */ 343 uint64_t drr_length; 344 uint64_t drr_toguid; 345 uint8_t drr_compression; 346 uint8_t drr_etype; 347 uint8_t drr_pad[6]; 348 uint32_t drr_lsize; /* uncompressed size of payload */ 349 uint32_t drr_psize; /* compr. (real) size of payload */ 350 /* (possibly compressed) content follows */ 351 } drr_write_embedded; 352 struct drr_object_range { 353 uint64_t drr_firstobj; 354 uint64_t drr_numslots; 355 uint64_t drr_toguid; 356 uint8_t drr_salt[ZIO_DATA_SALT_LEN]; 357 uint8_t drr_iv[ZIO_DATA_IV_LEN]; 358 uint8_t drr_mac[ZIO_DATA_MAC_LEN]; 359 uint8_t drr_flags; 360 uint8_t drr_pad[3]; 361 } drr_object_range; 362 struct drr_redact { 363 uint64_t drr_object; 364 uint64_t drr_offset; 365 uint64_t drr_length; 366 uint64_t drr_toguid; 367 } drr_redact; 368 369 /* 370 * Note: drr_checksum is overlaid with all record types 371 * except DRR_BEGIN. Therefore its (non-pad) members 372 * must not overlap with members from the other structs. 373 * We accomplish this by putting its members at the very 374 * end of the struct. 375 */ 376 struct drr_checksum { 377 uint64_t drr_pad[34]; 378 /* 379 * fletcher-4 checksum of everything preceding the 380 * checksum. 381 */ 382 zio_cksum_t drr_checksum; 383 } drr_checksum; 384 } drr_u; 385 } dmu_replay_record_t; 386 387 /* diff record range types */ 388 typedef enum diff_type { 389 DDR_NONE = 0x1, 390 DDR_INUSE = 0x2, 391 DDR_FREE = 0x4 392 } diff_type_t; 393 394 /* 395 * The diff reports back ranges of free or in-use objects. 396 */ 397 typedef struct dmu_diff_record { 398 uint64_t ddr_type; 399 uint64_t ddr_first; 400 uint64_t ddr_last; 401 } dmu_diff_record_t; 402 403 typedef struct zinject_record { 404 uint64_t zi_objset; 405 uint64_t zi_object; 406 uint64_t zi_start; 407 uint64_t zi_end; 408 uint64_t zi_guid; 409 uint32_t zi_level; 410 uint32_t zi_error; 411 uint64_t zi_type; 412 uint32_t zi_freq; 413 uint32_t zi_failfast; 414 char zi_func[MAXNAMELEN]; 415 uint32_t zi_iotype; 416 int32_t zi_duration; 417 uint64_t zi_timer; 418 uint64_t zi_nlanes; 419 uint32_t zi_cmd; 420 uint32_t zi_dvas; 421 } zinject_record_t; 422 423 #define ZINJECT_NULL 0x1 424 #define ZINJECT_FLUSH_ARC 0x2 425 #define ZINJECT_UNLOAD_SPA 0x4 426 #define ZINJECT_CALC_RANGE 0x8 427 428 #define ZEVENT_NONE 0x0 429 #define ZEVENT_NONBLOCK 0x1 430 #define ZEVENT_SIZE 1024 431 432 #define ZEVENT_SEEK_START 0 433 #define ZEVENT_SEEK_END UINT64_MAX 434 435 /* scaled frequency ranges */ 436 #define ZI_PERCENTAGE_MIN 4294UL 437 #define ZI_PERCENTAGE_MAX UINT32_MAX 438 439 #define ZI_NO_DVA (-1) 440 441 typedef enum zinject_type { 442 ZINJECT_UNINITIALIZED, 443 ZINJECT_DATA_FAULT, 444 ZINJECT_DEVICE_FAULT, 445 ZINJECT_LABEL_FAULT, 446 ZINJECT_IGNORED_WRITES, 447 ZINJECT_PANIC, 448 ZINJECT_DELAY_IO, 449 ZINJECT_DECRYPT_FAULT, 450 } zinject_type_t; 451 452 typedef struct zfs_share { 453 uint64_t z_exportdata; 454 uint64_t z_sharedata; 455 uint64_t z_sharetype; /* 0 = share, 1 = unshare */ 456 uint64_t z_sharemax; /* max length of share string */ 457 } zfs_share_t; 458 459 /* 460 * ZFS file systems may behave the usual, POSIX-compliant way, where 461 * name lookups are case-sensitive. They may also be set up so that 462 * all the name lookups are case-insensitive, or so that only some 463 * lookups, the ones that set an FIGNORECASE flag, are case-insensitive. 464 */ 465 typedef enum zfs_case { 466 ZFS_CASE_SENSITIVE, 467 ZFS_CASE_INSENSITIVE, 468 ZFS_CASE_MIXED 469 } zfs_case_t; 470 471 /* 472 * Note: this struct must have the same layout in 32-bit and 64-bit, so 473 * that 32-bit processes (like /sbin/zfs) can pass it to the 64-bit 474 * kernel. Therefore, we add padding to it so that no "hidden" padding 475 * is automatically added on 64-bit (but not on 32-bit). 476 */ 477 typedef struct zfs_cmd { 478 char zc_name[MAXPATHLEN]; /* name of pool or dataset */ 479 uint64_t zc_nvlist_src; /* really (char *) */ 480 uint64_t zc_nvlist_src_size; 481 uint64_t zc_nvlist_dst; /* really (char *) */ 482 uint64_t zc_nvlist_dst_size; 483 boolean_t zc_nvlist_dst_filled; /* put an nvlist in dst? */ 484 int zc_pad2; 485 486 /* 487 * The following members are for legacy ioctls which haven't been 488 * converted to the new method. 489 */ 490 uint64_t zc_history; /* really (char *) */ 491 char zc_value[MAXPATHLEN * 2]; 492 char zc_string[MAXNAMELEN]; 493 uint64_t zc_guid; 494 uint64_t zc_nvlist_conf; /* really (char *) */ 495 uint64_t zc_nvlist_conf_size; 496 uint64_t zc_cookie; 497 uint64_t zc_objset_type; 498 uint64_t zc_perm_action; 499 uint64_t zc_history_len; 500 uint64_t zc_history_offset; 501 uint64_t zc_obj; 502 uint64_t zc_iflags; /* internal to zfs(7fs) */ 503 zfs_share_t zc_share; 504 dmu_objset_stats_t zc_objset_stats; 505 struct drr_begin zc_begin_record; 506 zinject_record_t zc_inject_record; 507 uint32_t zc_defer_destroy; 508 uint32_t zc_flags; 509 uint64_t zc_action_handle; 510 int zc_cleanup_fd; 511 uint8_t zc_simple; 512 uint8_t zc_pad[3]; /* alignment */ 513 uint64_t zc_sendobj; 514 uint64_t zc_fromobj; 515 uint64_t zc_createtxg; 516 zfs_stat_t zc_stat; 517 uint64_t zc_zoneid; 518 } zfs_cmd_t; 519 520 typedef struct zfs_useracct { 521 char zu_domain[256]; 522 uid_t zu_rid; 523 uint32_t zu_pad; 524 uint64_t zu_space; 525 } zfs_useracct_t; 526 527 #define ZFSDEV_MAX_MINOR (1 << 16) 528 529 #define ZPOOL_EXPORT_AFTER_SPLIT 0x1 530 531 #ifdef _KERNEL 532 struct objset; 533 struct zfsvfs; 534 535 typedef struct zfs_creat { 536 nvlist_t *zct_zplprops; 537 nvlist_t *zct_props; 538 } zfs_creat_t; 539 540 extern int zfs_secpolicy_snapshot_perms(const char *, cred_t *); 541 extern int zfs_secpolicy_rename_perms(const char *, const char *, cred_t *); 542 extern int zfs_secpolicy_destroy_perms(const char *, cred_t *); 543 extern void zfs_unmount_snap(const char *); 544 extern void zfs_destroy_unmount_origin(const char *); 545 extern int getzfsvfs_impl(struct objset *, struct zfsvfs **); 546 extern int getzfsvfs(const char *, struct zfsvfs **); 547 548 enum zfsdev_state_type { 549 ZST_ONEXIT, 550 ZST_ZEVENT, 551 ZST_ALL, 552 }; 553 554 /* 555 * The zfsdev_state_t structure is managed as a singly-linked list 556 * from which items are never deleted. This allows for lock-free 557 * reading of the list so long as assignments to the zs_next and 558 * reads from zs_minor are performed atomically. Empty items are 559 * indicated by storing -1 into zs_minor. 560 */ 561 typedef struct zfsdev_state { 562 struct zfsdev_state *zs_next; /* next zfsdev_state_t link */ 563 minor_t zs_minor; /* made up minor number */ 564 void *zs_onexit; /* onexit data */ 565 void *zs_zevent; /* zevent data */ 566 } zfsdev_state_t; 567 568 extern void *zfsdev_get_state(minor_t minor, enum zfsdev_state_type which); 569 extern int zfsdev_getminor(int fd, minor_t *minorp); 570 571 extern uint_t zfs_fsyncer_key; 572 extern uint_t zfs_allow_log_key; 573 574 #endif /* _KERNEL */ 575 576 #ifdef __cplusplus 577 } 578 #endif 579 580 #endif /* _SYS_ZFS_IOCTL_H */ 581