zig

btrfs.h (37997B) - Raw

---

 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 /*
  * Copyright (C) 2007 Oracle.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public
  * License v2 as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
  * License along with this program; if not, write to the
  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  * Boston, MA 021110-1307, USA.
  */
 
 #ifndef _LINUX_BTRFS_H
 #define _LINUX_BTRFS_H
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #include <linux/types.h>
 #include <linux/ioctl.h>
 #include <linux/fs.h>
 
 #define BTRFS_IOCTL_MAGIC 0x94
 #define BTRFS_VOL_NAME_MAX 255
 #define BTRFS_LABEL_SIZE 256
 
 /* this should be 4k */
 #define BTRFS_PATH_NAME_MAX 4087
 struct btrfs_ioctl_vol_args {
 	__s64 fd;
 	char name[BTRFS_PATH_NAME_MAX + 1];
 };
 
 #define BTRFS_DEVICE_PATH_NAME_MAX	1024
 #define BTRFS_SUBVOL_NAME_MAX 		4039
 
 /* Deprecated since 5.7 */
 # define BTRFS_SUBVOL_CREATE_ASYNC	(1ULL << 0)
 #define BTRFS_SUBVOL_RDONLY		(1ULL << 1)
 #define BTRFS_SUBVOL_QGROUP_INHERIT	(1ULL << 2)
 
 #define BTRFS_DEVICE_SPEC_BY_ID		(1ULL << 3)
 
 #define BTRFS_SUBVOL_SPEC_BY_ID	(1ULL << 4)
 
 #define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED		\
 			(BTRFS_SUBVOL_RDONLY |		\
 			BTRFS_SUBVOL_QGROUP_INHERIT |	\
 			BTRFS_DEVICE_SPEC_BY_ID |	\
 			BTRFS_SUBVOL_SPEC_BY_ID)
 
 #define BTRFS_FSID_SIZE 16
 #define BTRFS_UUID_SIZE 16
 #define BTRFS_UUID_UNPARSED_SIZE	37
 
 /*
  * flags definition for qgroup limits
  *
  * Used by:
  * struct btrfs_qgroup_limit.flags
  * struct btrfs_qgroup_limit_item.flags
  */
 #define BTRFS_QGROUP_LIMIT_MAX_RFER	(1ULL << 0)
 #define BTRFS_QGROUP_LIMIT_MAX_EXCL	(1ULL << 1)
 #define BTRFS_QGROUP_LIMIT_RSV_RFER	(1ULL << 2)
 #define BTRFS_QGROUP_LIMIT_RSV_EXCL	(1ULL << 3)
 #define BTRFS_QGROUP_LIMIT_RFER_CMPR	(1ULL << 4)
 #define BTRFS_QGROUP_LIMIT_EXCL_CMPR	(1ULL << 5)
 
 struct btrfs_qgroup_limit {
 	__u64	flags;
 	__u64	max_rfer;
 	__u64	max_excl;
 	__u64	rsv_rfer;
 	__u64	rsv_excl;
 };
 
 /*
  * flags definition for qgroup inheritance
  *
  * Used by:
  * struct btrfs_qgroup_inherit.flags
  */
 #define BTRFS_QGROUP_INHERIT_SET_LIMITS	(1ULL << 0)
 #define BTRFS_QGROUP_INHERIT_FLAGS_SUPP (BTRFS_QGROUP_INHERIT_SET_LIMITS)
 
 struct btrfs_qgroup_inherit {
 	__u64	flags;
 	__u64	num_qgroups;
 	__u64	num_ref_copies;
 	__u64	num_excl_copies;
 	struct btrfs_qgroup_limit lim;
 	__u64	qgroups[];
 };
 
 struct btrfs_ioctl_qgroup_limit_args {
 	__u64	qgroupid;
 	struct btrfs_qgroup_limit lim;
 };
 
 /*
  * Arguments for specification of subvolumes or devices, supporting by-name or
  * by-id and flags
  *
  * The set of supported flags depends on the ioctl
  *
  * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls:
  * - BTRFS_IOC_SUBVOL_GETFLAGS
  * - BTRFS_IOC_SUBVOL_SETFLAGS
  */
 
 /* Supported flags for BTRFS_IOC_RM_DEV_V2 */
 #define BTRFS_DEVICE_REMOVE_ARGS_MASK					\
 	(BTRFS_DEVICE_SPEC_BY_ID)
 
 /* Supported flags for BTRFS_IOC_SNAP_CREATE_V2 and BTRFS_IOC_SUBVOL_CREATE_V2 */
 #define BTRFS_SUBVOL_CREATE_ARGS_MASK					\
 	 (BTRFS_SUBVOL_RDONLY |						\
 	 BTRFS_SUBVOL_QGROUP_INHERIT)
 
 /* Supported flags for BTRFS_IOC_SNAP_DESTROY_V2 */
 #define BTRFS_SUBVOL_DELETE_ARGS_MASK					\
 	(BTRFS_SUBVOL_SPEC_BY_ID)
 
 struct btrfs_ioctl_vol_args_v2 {
 	__s64 fd;
 	__u64 transid;
 	__u64 flags;
 	union {
 		struct {
 			__u64 size;
 			struct btrfs_qgroup_inherit *qgroup_inherit;
 		};
 		__u64 unused[4];
 	};
 	union {
 		char name[BTRFS_SUBVOL_NAME_MAX + 1];
 		__u64 devid;
 		__u64 subvolid;
 	};
 };
 
 /*
  * structure to report errors and progress to userspace, either as a
  * result of a finished scrub, a canceled scrub or a progress inquiry
  */
 struct btrfs_scrub_progress {
 	__u64 data_extents_scrubbed;	/* # of data extents scrubbed */
 	__u64 tree_extents_scrubbed;	/* # of tree extents scrubbed */
 	__u64 data_bytes_scrubbed;	/* # of data bytes scrubbed */
 	__u64 tree_bytes_scrubbed;	/* # of tree bytes scrubbed */
 	__u64 read_errors;		/* # of read errors encountered (EIO) */
 	__u64 csum_errors;		/* # of failed csum checks */
 	__u64 verify_errors;		/* # of occurrences, where the metadata
 					 * of a tree block did not match the
 					 * expected values, like generation or
 					 * logical */
 	__u64 no_csum;			/* # of 4k data block for which no csum
 					 * is present, probably the result of
 					 * data written with nodatasum */
 	__u64 csum_discards;		/* # of csum for which no data was found
 					 * in the extent tree. */
 	__u64 super_errors;		/* # of bad super blocks encountered */
 	__u64 malloc_errors;		/* # of internal kmalloc errors. These
 					 * will likely cause an incomplete
 					 * scrub */
 	__u64 uncorrectable_errors;	/* # of errors where either no intact
 					 * copy was found or the writeback
 					 * failed */
 	__u64 corrected_errors;		/* # of errors corrected */
 	__u64 last_physical;		/* last physical address scrubbed. In
 					 * case a scrub was aborted, this can
 					 * be used to restart the scrub */
 	__u64 unverified_errors;	/* # of occurrences where a read for a
 					 * full (64k) bio failed, but the re-
 					 * check succeeded for each 4k piece.
 					 * Intermittent error. */
 };
 
 #define BTRFS_SCRUB_READONLY	1
 #define BTRFS_SCRUB_SUPPORTED_FLAGS	(BTRFS_SCRUB_READONLY)
 struct btrfs_ioctl_scrub_args {
 	__u64 devid;				/* in */
 	__u64 start;				/* in */
 	__u64 end;				/* in */
 	__u64 flags;				/* in */
 	struct btrfs_scrub_progress progress;	/* out */
 	/* pad to 1k */
 	__u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
 };
 
 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS	0
 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID	1
 struct btrfs_ioctl_dev_replace_start_params {
 	__u64 srcdevid;	/* in, if 0, use srcdev_name instead */
 	__u64 cont_reading_from_srcdev_mode;	/* in, see #define
 						 * above */
 	__u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1];	/* in */
 	__u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1];	/* in */
 };
 
 #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED	0
 #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED		1
 #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED		2
 #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED		3
 #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED		4
 struct btrfs_ioctl_dev_replace_status_params {
 	__u64 replace_state;	/* out, see #define above */
 	__u64 progress_1000;	/* out, 0 <= x <= 1000 */
 	__u64 time_started;	/* out, seconds since 1-Jan-1970 */
 	__u64 time_stopped;	/* out, seconds since 1-Jan-1970 */
 	__u64 num_write_errors;	/* out */
 	__u64 num_uncorrectable_read_errors;	/* out */
 };
 
 #define BTRFS_IOCTL_DEV_REPLACE_CMD_START			0
 #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS			1
 #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL			2
 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR			0
 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED		1
 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED		2
 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS		3
 struct btrfs_ioctl_dev_replace_args {
 	__u64 cmd;	/* in */
 	__u64 result;	/* out */
 
 	union {
 		struct btrfs_ioctl_dev_replace_start_params start;
 		struct btrfs_ioctl_dev_replace_status_params status;
 	};	/* in/out */
 
 	__u64 spare[64];
 };
 
 struct btrfs_ioctl_dev_info_args {
 	__u64 devid;				/* in/out */
 	__u8 uuid[BTRFS_UUID_SIZE];		/* in/out */
 	__u64 bytes_used;			/* out */
 	__u64 total_bytes;			/* out */
 	/*
 	 * Optional, out.
 	 *
 	 * Showing the fsid of the device, allowing user space to check if this
 	 * device is a seeding one.
 	 *
 	 * Introduced in v6.3, thus user space still needs to check if kernel
 	 * changed this value.  Older kernel will not touch the values here.
 	 */
 	__u8 fsid[BTRFS_UUID_SIZE];
 	__u64 unused[377];			/* pad to 4k */
 	__u8 path[BTRFS_DEVICE_PATH_NAME_MAX];	/* out */
 };
 
 /*
  * Retrieve information about the filesystem
  */
 
 /* Request information about checksum type and size */
 #define BTRFS_FS_INFO_FLAG_CSUM_INFO			(1 << 0)
 
 /* Request information about filesystem generation */
 #define BTRFS_FS_INFO_FLAG_GENERATION			(1 << 1)
 /* Request information about filesystem metadata UUID */
 #define BTRFS_FS_INFO_FLAG_METADATA_UUID		(1 << 2)
 
 struct btrfs_ioctl_fs_info_args {
 	__u64 max_id;				/* out */
 	__u64 num_devices;			/* out */
 	__u8 fsid[BTRFS_FSID_SIZE];		/* out */
 	__u32 nodesize;				/* out */
 	__u32 sectorsize;			/* out */
 	__u32 clone_alignment;			/* out */
 	/* See BTRFS_FS_INFO_FLAG_* */
 	__u16 csum_type;			/* out */
 	__u16 csum_size;			/* out */
 	__u64 flags;				/* in/out */
 	__u64 generation;			/* out */
 	__u8 metadata_uuid[BTRFS_FSID_SIZE];	/* out */
 	__u8 reserved[944];			/* pad to 1k */
 };
 
 /*
  * feature flags
  *
  * Used by:
  * struct btrfs_ioctl_feature_flags
  */
 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE		(1ULL << 0)
 /*
  * Older kernels (< 4.9) on big-endian systems produced broken free space tree
  * bitmaps, and btrfs-progs also used to corrupt the free space tree (versions
  * < 4.7.3).  If this bit is clear, then the free space tree cannot be trusted.
  * btrfs-progs can also intentionally clear this bit to ask the kernel to
  * rebuild the free space tree, however this might not work on older kernels
  * that do not know about this bit. If not sure, clear the cache manually on
  * first mount when booting older kernel versions.
  */
 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID	(1ULL << 1)
 #define BTRFS_FEATURE_COMPAT_RO_VERITY			(1ULL << 2)
 
 /*
  * Put all block group items into a dedicated block group tree, greatly
  * reducing mount time for large filesystem due to better locality.
  */
 #define BTRFS_FEATURE_COMPAT_RO_BLOCK_GROUP_TREE	(1ULL << 3)
 
 #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF	(1ULL << 0)
 #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL	(1ULL << 1)
 #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS	(1ULL << 2)
 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO	(1ULL << 3)
 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD	(1ULL << 4)
 
 /*
  * older kernels tried to do bigger metadata blocks, but the
  * code was pretty buggy.  Lets not let them try anymore.
  */
 #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA	(1ULL << 5)
 
 #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF	(1ULL << 6)
 #define BTRFS_FEATURE_INCOMPAT_RAID56		(1ULL << 7)
 #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA	(1ULL << 8)
 #define BTRFS_FEATURE_INCOMPAT_NO_HOLES		(1ULL << 9)
 #define BTRFS_FEATURE_INCOMPAT_METADATA_UUID	(1ULL << 10)
 #define BTRFS_FEATURE_INCOMPAT_RAID1C34		(1ULL << 11)
 #define BTRFS_FEATURE_INCOMPAT_ZONED		(1ULL << 12)
 #define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2	(1ULL << 13)
 #define BTRFS_FEATURE_INCOMPAT_RAID_STRIPE_TREE	(1ULL << 14)
 #define BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA	(1ULL << 16)
 
 struct btrfs_ioctl_feature_flags {
 	__u64 compat_flags;
 	__u64 compat_ro_flags;
 	__u64 incompat_flags;
 };
 
 /* balance control ioctl modes */
 #define BTRFS_BALANCE_CTL_PAUSE		1
 #define BTRFS_BALANCE_CTL_CANCEL	2
 
 /*
  * this is packed, because it should be exactly the same as its disk
  * byte order counterpart (struct btrfs_disk_balance_args)
  */
 struct btrfs_balance_args {
 	__u64 profiles;
 
 	/*
 	 * usage filter
 	 * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N'
 	 * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max
 	 */
 	union {
 		__u64 usage;
 		struct {
 			__u32 usage_min;
 			__u32 usage_max;
 		};
 	};
 	__u64 devid;
 	__u64 pstart;
 	__u64 pend;
 	__u64 vstart;
 	__u64 vend;
 
 	__u64 target;
 
 	__u64 flags;
 
 	/*
 	 * BTRFS_BALANCE_ARGS_LIMIT with value 'limit'
 	 * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum
 	 * and maximum
 	 */
 	union {
 		__u64 limit;		/* limit number of processed chunks */
 		struct {
 			__u32 limit_min;
 			__u32 limit_max;
 		};
 	};
 
 	/*
 	 * Process chunks that cross stripes_min..stripes_max devices,
 	 * BTRFS_BALANCE_ARGS_STRIPES_RANGE
 	 */
 	__u32 stripes_min;
 	__u32 stripes_max;
 
 	__u64 unused[6];
 } __attribute__ ((__packed__));
 
 /* report balance progress to userspace */
 struct btrfs_balance_progress {
 	__u64 expected;		/* estimated # of chunks that will be
 				 * relocated to fulfill the request */
 	__u64 considered;	/* # of chunks we have considered so far */
 	__u64 completed;	/* # of chunks relocated so far */
 };
 
 /*
  * flags definition for balance
  *
  * Restriper's general type filter
  *
  * Used by:
  * btrfs_ioctl_balance_args.flags
  * btrfs_balance_control.flags (internal)
  */
 #define BTRFS_BALANCE_DATA		(1ULL << 0)
 #define BTRFS_BALANCE_SYSTEM		(1ULL << 1)
 #define BTRFS_BALANCE_METADATA		(1ULL << 2)
 
 #define BTRFS_BALANCE_TYPE_MASK		(BTRFS_BALANCE_DATA |	    \
 					 BTRFS_BALANCE_SYSTEM |	    \
 					 BTRFS_BALANCE_METADATA)
 
 #define BTRFS_BALANCE_FORCE		(1ULL << 3)
 #define BTRFS_BALANCE_RESUME		(1ULL << 4)
 
 /*
  * flags definitions for per-type balance args
  *
  * Balance filters
  *
  * Used by:
  * struct btrfs_balance_args
  */
 #define BTRFS_BALANCE_ARGS_PROFILES	(1ULL << 0)
 #define BTRFS_BALANCE_ARGS_USAGE	(1ULL << 1)
 #define BTRFS_BALANCE_ARGS_DEVID	(1ULL << 2)
 #define BTRFS_BALANCE_ARGS_DRANGE	(1ULL << 3)
 #define BTRFS_BALANCE_ARGS_VRANGE	(1ULL << 4)
 #define BTRFS_BALANCE_ARGS_LIMIT	(1ULL << 5)
 #define BTRFS_BALANCE_ARGS_LIMIT_RANGE	(1ULL << 6)
 #define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7)
 #define BTRFS_BALANCE_ARGS_USAGE_RANGE	(1ULL << 10)
 
 #define BTRFS_BALANCE_ARGS_MASK			\
 	(BTRFS_BALANCE_ARGS_PROFILES |		\
 	 BTRFS_BALANCE_ARGS_USAGE |		\
 	 BTRFS_BALANCE_ARGS_DEVID | 		\
 	 BTRFS_BALANCE_ARGS_DRANGE |		\
 	 BTRFS_BALANCE_ARGS_VRANGE |		\
 	 BTRFS_BALANCE_ARGS_LIMIT |		\
 	 BTRFS_BALANCE_ARGS_LIMIT_RANGE |	\
 	 BTRFS_BALANCE_ARGS_STRIPES_RANGE |	\
 	 BTRFS_BALANCE_ARGS_USAGE_RANGE)
 
 /*
  * Profile changing flags.  When SOFT is set we won't relocate chunk if
  * it already has the target profile (even though it may be
  * half-filled).
  */
 #define BTRFS_BALANCE_ARGS_CONVERT	(1ULL << 8)
 #define BTRFS_BALANCE_ARGS_SOFT		(1ULL << 9)
 
 
 /*
  * flags definition for balance state
  *
  * Used by:
  * struct btrfs_ioctl_balance_args.state
  */
 #define BTRFS_BALANCE_STATE_RUNNING	(1ULL << 0)
 #define BTRFS_BALANCE_STATE_PAUSE_REQ	(1ULL << 1)
 #define BTRFS_BALANCE_STATE_CANCEL_REQ	(1ULL << 2)
 
 struct btrfs_ioctl_balance_args {
 	__u64 flags;				/* in/out */
 	__u64 state;				/* out */
 
 	struct btrfs_balance_args data;		/* in/out */
 	struct btrfs_balance_args meta;		/* in/out */
 	struct btrfs_balance_args sys;		/* in/out */
 
 	struct btrfs_balance_progress stat;	/* out */
 
 	__u64 unused[72];			/* pad to 1k */
 };
 
 #define BTRFS_INO_LOOKUP_PATH_MAX 4080
 struct btrfs_ioctl_ino_lookup_args {
 	__u64 treeid;
 	__u64 objectid;
 	char name[BTRFS_INO_LOOKUP_PATH_MAX];
 };
 
 #define BTRFS_INO_LOOKUP_USER_PATH_MAX (4080 - BTRFS_VOL_NAME_MAX - 1)
 struct btrfs_ioctl_ino_lookup_user_args {
 	/* in, inode number containing the subvolume of 'subvolid' */
 	__u64 dirid;
 	/* in */
 	__u64 treeid;
 	/* out, name of the subvolume of 'treeid' */
 	char name[BTRFS_VOL_NAME_MAX + 1];
 	/*
 	 * out, constructed path from the directory with which the ioctl is
 	 * called to dirid
 	 */
 	char path[BTRFS_INO_LOOKUP_USER_PATH_MAX];
 };
 
 /* Search criteria for the btrfs SEARCH ioctl family. */
 struct btrfs_ioctl_search_key {
 	/*
 	 * The tree we're searching in. 1 is the tree of tree roots, 2 is the
 	 * extent tree, etc...
 	 *
 	 * A special tree_id value of 0 will cause a search in the subvolume
 	 * tree that the inode which is passed to the ioctl is part of.
 	 */
 	__u64 tree_id;		/* in */
 
 	/*
 	 * When doing a tree search, we're actually taking a slice from a
 	 * linear search space of 136-bit keys.
 	 *
 	 * A full 136-bit tree key is composed as:
 	 *   (objectid << 72) + (type << 64) + offset
 	 *
 	 * The individual min and max values for objectid, type and offset
 	 * define the min_key and max_key values for the search range. All
 	 * metadata items with a key in the interval [min_key, max_key] will be
 	 * returned.
 	 *
 	 * Additionally, we can filter the items returned on transaction id of
 	 * the metadata block they're stored in by specifying a transid range.
 	 * Be aware that this transaction id only denotes when the metadata
 	 * page that currently contains the item got written the last time as
 	 * result of a COW operation.  The number does not have any meaning
 	 * related to the transaction in which an individual item that is being
 	 * returned was created or changed.
 	 */
 	__u64 min_objectid;	/* in */
 	__u64 max_objectid;	/* in */
 	__u64 min_offset;	/* in */
 	__u64 max_offset;	/* in */
 	__u64 min_transid;	/* in */
 	__u64 max_transid;	/* in */
 	__u32 min_type;		/* in */
 	__u32 max_type;		/* in */
 
 	/*
 	 * input: The maximum amount of results desired.
 	 * output: The actual amount of items returned, restricted by any of:
 	 *  - reaching the upper bound of the search range
 	 *  - reaching the input nr_items amount of items
 	 *  - completely filling the supplied memory buffer
 	 */
 	__u32 nr_items;		/* in/out */
 
 	/* align to 64 bits */
 	__u32 unused;
 
 	/* some extra for later */
 	__u64 unused1;
 	__u64 unused2;
 	__u64 unused3;
 	__u64 unused4;
 };
 
 struct btrfs_ioctl_search_header {
 	__u64 transid;
 	__u64 objectid;
 	__u64 offset;
 	__u32 type;
 	__u32 len;
 } __attribute__ ((__may_alias__));
 
 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
 /*
  * the buf is an array of search headers where
  * each header is followed by the actual item
  * the type field is expanded to 32 bits for alignment
  */
 struct btrfs_ioctl_search_args {
 	struct btrfs_ioctl_search_key key;
 	char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
 };
 
 /*
  * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes.
  * The allocated size of the buffer is set in buf_size.
  */
 struct btrfs_ioctl_search_args_v2 {
 	struct btrfs_ioctl_search_key key; /* in/out - search parameters */
 	__u64 buf_size;		   /* in - size of buffer
 					    * out - on EOVERFLOW: needed size
 					    *       to store item */
 	__u64 buf[];                       /* out - found items */
 };
 
 /* With a @src_length of zero, the range from @src_offset->EOF is cloned! */
 struct btrfs_ioctl_clone_range_args {
 	__s64 src_fd;
 	__u64 src_offset, src_length;
 	__u64 dest_offset;
 };
 
 /*
  * flags definition for the defrag range ioctl
  *
  * Used by:
  * struct btrfs_ioctl_defrag_range_args.flags
  */
 #define BTRFS_DEFRAG_RANGE_COMPRESS 1
 #define BTRFS_DEFRAG_RANGE_START_IO 2
 #define BTRFS_DEFRAG_RANGE_FLAGS_SUPP	(BTRFS_DEFRAG_RANGE_COMPRESS |		\
 					 BTRFS_DEFRAG_RANGE_START_IO)
 
 struct btrfs_ioctl_defrag_range_args {
 	/* start of the defrag operation */
 	__u64 start;
 
 	/* number of bytes to defrag, use (u64)-1 to say all */
 	__u64 len;
 
 	/*
 	 * flags for the operation, which can include turning
 	 * on compression for this one defrag
 	 */
 	__u64 flags;
 
 	/*
 	 * any extent bigger than this will be considered
 	 * already defragged.  Use 0 to take the kernel default
 	 * Use 1 to say every single extent must be rewritten
 	 */
 	__u32 extent_thresh;
 
 	/*
 	 * which compression method to use if turning on compression
 	 * for this defrag operation.  If unspecified, zlib will
 	 * be used
 	 */
 	__u32 compress_type;
 
 	/* spare for later */
 	__u32 unused[4];
 };
 
 
 #define BTRFS_SAME_DATA_DIFFERS	1
 /* For extent-same ioctl */
 struct btrfs_ioctl_same_extent_info {
 	__s64 fd;		/* in - destination file */
 	__u64 logical_offset;	/* in - start of extent in destination */
 	__u64 bytes_deduped;	/* out - total # of bytes we were able
 				 * to dedupe from this file */
 	/* status of this dedupe operation:
 	 * 0 if dedup succeeds
 	 * < 0 for error
 	 * == BTRFS_SAME_DATA_DIFFERS if data differs
 	 */
 	__s32 status;		/* out - see above description */
 	__u32 reserved;
 };
 
 struct btrfs_ioctl_same_args {
 	__u64 logical_offset;	/* in - start of extent in source */
 	__u64 length;		/* in - length of extent */
 	__u16 dest_count;	/* in - total elements in info array */
 	__u16 reserved1;
 	__u32 reserved2;
 	struct btrfs_ioctl_same_extent_info info[];
 };
 
 struct btrfs_ioctl_space_info {
 	__u64 flags;
 	__u64 total_bytes;
 	__u64 used_bytes;
 };
 
 struct btrfs_ioctl_space_args {
 	__u64 space_slots;
 	__u64 total_spaces;
 	struct btrfs_ioctl_space_info spaces[];
 };
 
 struct btrfs_data_container {
 	__u32	bytes_left;	/* out -- bytes not needed to deliver output */
 	__u32	bytes_missing;	/* out -- additional bytes needed for result */
 	__u32	elem_cnt;	/* out */
 	__u32	elem_missed;	/* out */
 	__u64	val[];		/* out */
 };
 
 struct btrfs_ioctl_ino_path_args {
 	__u64				inum;		/* in */
 	__u64				size;		/* in */
 	__u64				reserved[4];
 	/* struct btrfs_data_container	*fspath;	   out */
 	__u64				fspath;		/* out */
 };
 
 struct btrfs_ioctl_logical_ino_args {
 	__u64				logical;	/* in */
 	__u64				size;		/* in */
 	__u64				reserved[3];	/* must be 0 for now */
 	__u64				flags;		/* in, v2 only */
 	/* struct btrfs_data_container	*inodes;	out   */
 	__u64				inodes;
 };
 
 /*
  * Return every ref to the extent, not just those containing logical block.
  * Requires logical == extent bytenr.
  */
 #define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET	(1ULL << 0)
 
 enum btrfs_dev_stat_values {
 	/* disk I/O failure stats */
 	BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
 	BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
 	BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
 
 	/* stats for indirect indications for I/O failures */
 	BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
 					 * contents is illegal: this is an
 					 * indication that the block was damaged
 					 * during read or write, or written to
 					 * wrong location or read from wrong
 					 * location */
 	BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
 					 * been written */
 
 	BTRFS_DEV_STAT_VALUES_MAX
 };
 
 /* Reset statistics after reading; needs SYS_ADMIN capability */
 #define	BTRFS_DEV_STATS_RESET		(1ULL << 0)
 
 struct btrfs_ioctl_get_dev_stats {
 	__u64 devid;				/* in */
 	__u64 nr_items;				/* in/out */
 	__u64 flags;				/* in/out */
 
 	/* out values: */
 	__u64 values[BTRFS_DEV_STAT_VALUES_MAX];
 
 	/*
 	 * This pads the struct to 1032 bytes. It was originally meant to pad to
 	 * 1024 bytes, but when adding the flags field, the padding calculation
 	 * was not adjusted.
 	 */
 	__u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX];
 };
 
 #define BTRFS_QUOTA_CTL_ENABLE	1
 #define BTRFS_QUOTA_CTL_DISABLE	2
 #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED	3
 #define BTRFS_QUOTA_CTL_ENABLE_SIMPLE_QUOTA 4
 struct btrfs_ioctl_quota_ctl_args {
 	__u64 cmd;
 	__u64 status;
 };
 
 struct btrfs_ioctl_quota_rescan_args {
 	__u64	flags;
 	__u64   progress;
 	__u64   reserved[6];
 };
 
 struct btrfs_ioctl_qgroup_assign_args {
 	__u64 assign;
 	__u64 src;
 	__u64 dst;
 };
 
 struct btrfs_ioctl_qgroup_create_args {
 	__u64 create;
 	__u64 qgroupid;
 };
 struct btrfs_ioctl_timespec {
 	__u64 sec;
 	__u32 nsec;
 };
 
 struct btrfs_ioctl_received_subvol_args {
 	char	uuid[BTRFS_UUID_SIZE];	/* in */
 	__u64	stransid;		/* in */
 	__u64	rtransid;		/* out */
 	struct btrfs_ioctl_timespec stime; /* in */
 	struct btrfs_ioctl_timespec rtime; /* out */
 	__u64	flags;			/* in */
 	__u64	reserved[16];		/* in */
 };
 
 /*
  * Caller doesn't want file data in the send stream, even if the
  * search of clone sources doesn't find an extent. UPDATE_EXTENT
  * commands will be sent instead of WRITE commands.
  */
 #define BTRFS_SEND_FLAG_NO_FILE_DATA		0x1
 
 /*
  * Do not add the leading stream header. Used when multiple snapshots
  * are sent back to back.
  */
 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER	0x2
 
 /*
  * Omit the command at the end of the stream that indicated the end
  * of the stream. This option is used when multiple snapshots are
  * sent back to back.
  */
 #define BTRFS_SEND_FLAG_OMIT_END_CMD		0x4
 
 /*
  * Read the protocol version in the structure
  */
 #define BTRFS_SEND_FLAG_VERSION			0x8
 
 /*
  * Send compressed data using the ENCODED_WRITE command instead of decompressing
  * the data and sending it with the WRITE command. This requires protocol
  * version >= 2.
  */
 #define BTRFS_SEND_FLAG_COMPRESSED		0x10
 
 #define BTRFS_SEND_FLAG_MASK \
 	(BTRFS_SEND_FLAG_NO_FILE_DATA | \
 	 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \
 	 BTRFS_SEND_FLAG_OMIT_END_CMD | \
 	 BTRFS_SEND_FLAG_VERSION | \
 	 BTRFS_SEND_FLAG_COMPRESSED)
 
 struct btrfs_ioctl_send_args {
 	__s64 send_fd;			/* in */
 	__u64 clone_sources_count;	/* in */
 	__u64 *clone_sources;	/* in */
 	__u64 parent_root;		/* in */
 	__u64 flags;			/* in */
 	__u32 version;			/* in */
 	__u8  reserved[28];		/* in */
 };
 
 /*
  * Information about a fs tree root.
  *
  * All items are filled by the ioctl
  */
 struct btrfs_ioctl_get_subvol_info_args {
 	/* Id of this subvolume */
 	__u64 treeid;
 
 	/* Name of this subvolume, used to get the real name at mount point */
 	char name[BTRFS_VOL_NAME_MAX + 1];
 
 	/*
 	 * Id of the subvolume which contains this subvolume.
 	 * Zero for top-level subvolume or a deleted subvolume.
 	 */
 	__u64 parent_id;
 
 	/*
 	 * Inode number of the directory which contains this subvolume.
 	 * Zero for top-level subvolume or a deleted subvolume
 	 */
 	__u64 dirid;
 
 	/* Latest transaction id of this subvolume */
 	__u64 generation;
 
 	/* Flags of this subvolume */
 	__u64 flags;
 
 	/* UUID of this subvolume */
 	__u8 uuid[BTRFS_UUID_SIZE];
 
 	/*
 	 * UUID of the subvolume of which this subvolume is a snapshot.
 	 * All zero for a non-snapshot subvolume.
 	 */
 	__u8 parent_uuid[BTRFS_UUID_SIZE];
 
 	/*
 	 * UUID of the subvolume from which this subvolume was received.
 	 * All zero for non-received subvolume.
 	 */
 	__u8 received_uuid[BTRFS_UUID_SIZE];
 
 	/* Transaction id indicating when change/create/send/receive happened */
 	__u64 ctransid;
 	__u64 otransid;
 	__u64 stransid;
 	__u64 rtransid;
 	/* Time corresponding to c/o/s/rtransid */
 	struct btrfs_ioctl_timespec ctime;
 	struct btrfs_ioctl_timespec otime;
 	struct btrfs_ioctl_timespec stime;
 	struct btrfs_ioctl_timespec rtime;
 
 	/* Must be zero */
 	__u64 reserved[8];
 };
 
 #define BTRFS_MAX_ROOTREF_BUFFER_NUM 255
 struct btrfs_ioctl_get_subvol_rootref_args {
 		/* in/out, minimum id of rootref's treeid to be searched */
 		__u64 min_treeid;
 
 		/* out */
 		struct {
 			__u64 treeid;
 			__u64 dirid;
 		} rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM];
 
 		/* out, number of found items */
 		__u8 num_items;
 		__u8 align[7];
 };
 
 /*
  * Data and metadata for an encoded read or write.
  *
  * Encoded I/O bypasses any encoding automatically done by the filesystem (e.g.,
  * compression). This can be used to read the compressed contents of a file or
  * write pre-compressed data directly to a file.
  *
  * BTRFS_IOC_ENCODED_READ and BTRFS_IOC_ENCODED_WRITE are essentially
  * preadv/pwritev with additional metadata about how the data is encoded and the
  * size of the unencoded data.
  *
  * BTRFS_IOC_ENCODED_READ fills the given iovecs with the encoded data, fills
  * the metadata fields, and returns the size of the encoded data. It reads one
  * extent per call. It can also read data which is not encoded.
  *
  * BTRFS_IOC_ENCODED_WRITE uses the metadata fields, writes the encoded data
  * from the iovecs, and returns the size of the encoded data. Note that the
  * encoded data is not validated when it is written; if it is not valid (e.g.,
  * it cannot be decompressed), then a subsequent read may return an error.
  *
  * Since the filesystem page cache contains decoded data, encoded I/O bypasses
  * the page cache. Encoded I/O requires CAP_SYS_ADMIN.
  */
 struct btrfs_ioctl_encoded_io_args {
 	/* Input parameters for both reads and writes. */
 
 	/*
 	 * iovecs containing encoded data.
 	 *
 	 * For reads, if the size of the encoded data is larger than the sum of
 	 * iov[n].iov_len for 0 <= n < iovcnt, then the ioctl fails with
 	 * ENOBUFS.
 	 *
 	 * For writes, the size of the encoded data is the sum of iov[n].iov_len
 	 * for 0 <= n < iovcnt. This must be less than 128 KiB (this limit may
 	 * increase in the future). This must also be less than or equal to
 	 * unencoded_len.
 	 */
 	const struct iovec *iov;
 	/* Number of iovecs. */
 	unsigned long iovcnt;
 	/*
 	 * Offset in file.
 	 *
 	 * For writes, must be aligned to the sector size of the filesystem.
 	 */
 	__s64 offset;
 	/* Currently must be zero. */
 	__u64 flags;
 
 	/*
 	 * For reads, the following members are output parameters that will
 	 * contain the returned metadata for the encoded data.
 	 * For writes, the following members must be set to the metadata for the
 	 * encoded data.
 	 */
 
 	/*
 	 * Length of the data in the file.
 	 *
 	 * Must be less than or equal to unencoded_len - unencoded_offset. For
 	 * writes, must be aligned to the sector size of the filesystem unless
 	 * the data ends at or beyond the current end of the file.
 	 */
 	__u64 len;
 	/*
 	 * Length of the unencoded (i.e., decrypted and decompressed) data.
 	 *
 	 * For writes, must be no more than 128 KiB (this limit may increase in
 	 * the future). If the unencoded data is actually longer than
 	 * unencoded_len, then it is truncated; if it is shorter, then it is
 	 * extended with zeroes.
 	 */
 	__u64 unencoded_len;
 	/*
 	 * Offset from the first byte of the unencoded data to the first byte of
 	 * logical data in the file.
 	 *
 	 * Must be less than unencoded_len.
 	 */
 	__u64 unencoded_offset;
 	/*
 	 * BTRFS_ENCODED_IO_COMPRESSION_* type.
 	 *
 	 * For writes, must not be BTRFS_ENCODED_IO_COMPRESSION_NONE.
 	 */
 	__u32 compression;
 	/* Currently always BTRFS_ENCODED_IO_ENCRYPTION_NONE. */
 	__u32 encryption;
 	/*
 	 * Reserved for future expansion.
 	 *
 	 * For reads, always returned as zero. Users should check for non-zero
 	 * bytes. If there are any, then the kernel has a newer version of this
 	 * structure with additional information that the user definition is
 	 * missing.
 	 *
 	 * For writes, must be zeroed.
 	 */
 	__u8 reserved[64];
 };
 
 /* Data is not compressed. */
 #define BTRFS_ENCODED_IO_COMPRESSION_NONE 0
 /* Data is compressed as a single zlib stream. */
 #define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1
 /*
  * Data is compressed as a single zstd frame with the windowLog compression
  * parameter set to no more than 17.
  */
 #define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2
 /*
  * Data is compressed sector by sector (using the sector size indicated by the
  * name of the constant) with LZO1X and wrapped in the format documented in
  * fs/btrfs/lzo.c. For writes, the compression sector size must match the
  * filesystem sector size.
  */
 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3
 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4
 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5
 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6
 #define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7
 #define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8
 
 /* Data is not encrypted. */
 #define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0
 #define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1
 
 /*
  * Wait for subvolume cleaning process. This queries the kernel queue and it
  * can change between the calls.
  *
  * - FOR_ONE	- specify the subvolid
  * - FOR_QUEUED - wait for all currently queued
  * - COUNT	- count number of queued
  * - PEEK_FIRST - read which is the first in the queue (to be cleaned or being
  * 		  cleaned already), or 0 if the queue is empty
  * - PEEK_LAST  - read the last subvolid in the queue, or 0 if the queue is empty
  */
 struct btrfs_ioctl_subvol_wait {
 	__u64 subvolid;
 	__u32 mode;
 	__u32 count;
 };
 
 #define BTRFS_SUBVOL_SYNC_WAIT_FOR_ONE		(0)
 #define BTRFS_SUBVOL_SYNC_WAIT_FOR_QUEUED	(1)
 #define BTRFS_SUBVOL_SYNC_COUNT			(2)
 #define BTRFS_SUBVOL_SYNC_PEEK_FIRST		(3)
 #define BTRFS_SUBVOL_SYNC_PEEK_LAST		(4)
 
 /* Error codes as returned by the kernel */
 enum btrfs_err_code {
 	BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1,
 	BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
 	BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
 	BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
 	BTRFS_ERROR_DEV_TGT_REPLACE,
 	BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
 	BTRFS_ERROR_DEV_ONLY_WRITABLE,
 	BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS,
 	BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET,
 	BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET,
 };
 
 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
 				   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
 				   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
 				   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
 				   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_FORGET_DEV _IOW(BTRFS_IOCTL_MAGIC, 5, \
 				   struct btrfs_ioctl_vol_args)
 /* trans start and trans end are dangerous, and only for
  * use by applications that know how to avoid the
  * resulting deadlocks
  */
 #define BTRFS_IOC_TRANS_START  _IO(BTRFS_IOCTL_MAGIC, 6)
 #define BTRFS_IOC_TRANS_END    _IO(BTRFS_IOCTL_MAGIC, 7)
 #define BTRFS_IOC_SYNC         _IO(BTRFS_IOCTL_MAGIC, 8)
 
 #define BTRFS_IOC_CLONE        _IOW(BTRFS_IOCTL_MAGIC, 9, int)
 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
 				   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
 				   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
 				   struct btrfs_ioctl_vol_args)
 
 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
 				  struct btrfs_ioctl_clone_range_args)
 
 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
 				   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
 				struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
 				struct btrfs_ioctl_defrag_range_args)
 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
 				   struct btrfs_ioctl_search_args)
 #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \
 					   struct btrfs_ioctl_search_args_v2)
 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
 				   struct btrfs_ioctl_ino_lookup_args)
 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64)
 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
 				    struct btrfs_ioctl_space_args)
 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
 #define BTRFS_IOC_WAIT_SYNC  _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
 				   struct btrfs_ioctl_vol_args_v2)
 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
 				   struct btrfs_ioctl_vol_args_v2)
 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
 			      struct btrfs_ioctl_scrub_args)
 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
 				       struct btrfs_ioctl_scrub_args)
 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
 				 struct btrfs_ioctl_dev_info_args)
 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
 			       struct btrfs_ioctl_fs_info_args)
 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
 				   struct btrfs_ioctl_balance_args)
 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
 					struct btrfs_ioctl_balance_args)
 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
 					struct btrfs_ioctl_ino_path_args)
 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
 					struct btrfs_ioctl_logical_ino_args)
 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
 				struct btrfs_ioctl_received_subvol_args)
 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
 				     struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
 			       struct btrfs_ioctl_quota_ctl_args)
 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
 			       struct btrfs_ioctl_qgroup_assign_args)
 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
 			       struct btrfs_ioctl_qgroup_create_args)
 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
 			       struct btrfs_ioctl_qgroup_limit_args)
 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \
 			       struct btrfs_ioctl_quota_rescan_args)
 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
 			       struct btrfs_ioctl_quota_rescan_args)
 #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
 #define BTRFS_IOC_GET_FSLABEL 	FS_IOC_GETFSLABEL
 #define BTRFS_IOC_SET_FSLABEL	FS_IOC_SETFSLABEL
 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
 				      struct btrfs_ioctl_get_dev_stats)
 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
 				    struct btrfs_ioctl_dev_replace_args)
 #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \
 					 struct btrfs_ioctl_same_args)
 #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
 				   struct btrfs_ioctl_feature_flags)
 #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \
 				   struct btrfs_ioctl_feature_flags[2])
 #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \
 				   struct btrfs_ioctl_feature_flags[3])
 #define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \
 				   struct btrfs_ioctl_vol_args_v2)
 #define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \
 					struct btrfs_ioctl_logical_ino_args)
 #define BTRFS_IOC_GET_SUBVOL_INFO _IOR(BTRFS_IOCTL_MAGIC, 60, \
 				struct btrfs_ioctl_get_subvol_info_args)
 #define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, \
 				struct btrfs_ioctl_get_subvol_rootref_args)
 #define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \
 				struct btrfs_ioctl_ino_lookup_user_args)
 #define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \
 				struct btrfs_ioctl_vol_args_v2)
 #define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, \
 				    struct btrfs_ioctl_encoded_io_args)
 #define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \
 				     struct btrfs_ioctl_encoded_io_args)
 #define BTRFS_IOC_SUBVOL_SYNC_WAIT _IOW(BTRFS_IOCTL_MAGIC, 65, \
 					struct btrfs_ioctl_subvol_wait)
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* _LINUX_BTRFS_H */