[linux-2.6-block.git] / fs / btrfs / ioctl.h

/*
 * 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 __IOCTL_
#define __IOCTL_
#include <linux/ioctl.h>

#define BTRFS_IOCTL_MAGIC 0x94
#define BTRFS_VOL_NAME_MAX 255

/* 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_SUBVOL_CREATE_ASYNC	(1ULL << 0)
#define BTRFS_SUBVOL_RDONLY		(1ULL << 1)
#define BTRFS_SUBVOL_QGROUP_INHERIT	(1ULL << 2)
#define BTRFS_FSID_SIZE 16
#define BTRFS_UUID_SIZE 16

#define BTRFS_QGROUP_INHERIT_SET_LIMITS	(1ULL << 0)

struct btrfs_qgroup_limit {
	__u64	flags;
	__u64	max_rfer;
	__u64	max_excl;
	__u64	rsv_rfer;
	__u64	rsv_excl;
};

struct btrfs_qgroup_inherit {
	__u64	flags;
	__u64	num_qgroups;
	__u64	num_ref_copies;
	__u64	num_excl_copies;
	struct btrfs_qgroup_limit lim;
	__u64	qgroups[0];
};

struct btrfs_ioctl_qgroup_limit_args {
	__u64	qgroupid;
	struct btrfs_qgroup_limit lim;
};

#define BTRFS_SUBVOL_NAME_MAX 4039
struct btrfs_ioctl_vol_args_v2 {
	__s64 fd;
	__u64 transid;
	__u64 flags;
	union {
		struct {
			__u64 size;
			struct btrfs_qgroup_inherit __user *qgroup_inherit;
		};
		__u64 unused[4];
	};
	char name[BTRFS_SUBVOL_NAME_MAX + 1];
};

/*
 * 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 occurences, 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 occurences 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
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_DEVICE_PATH_NAME_MAX 1024
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 */
	__u64 unused[379];			/* pad to 4k */
	__u8 path[BTRFS_DEVICE_PATH_NAME_MAX];	/* out */
};

struct btrfs_ioctl_fs_info_args {
	__u64 max_id;				/* out */
	__u64 num_devices;			/* out */
	__u8 fsid[BTRFS_FSID_SIZE];		/* out */
	__u64 reserved[124];			/* pad to 1k */
};

/* 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;
	__u64 usage;
	__u64 devid;
	__u64 pstart;
	__u64 pend;
	__u64 vstart;
	__u64 vend;

	__u64 target;

	__u64 flags;

	__u64 unused[8];
} __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 */
};

#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];
};

struct btrfs_ioctl_search_key {
	/* which root are we searching.  0 is the tree of tree roots */
	__u64 tree_id;

	/* keys returned will be >= min and <= max */
	__u64 min_objectid;
	__u64 max_objectid;

	/* keys returned will be >= min and <= max */
	__u64 min_offset;
	__u64 max_offset;

	/* max and min transids to search for */
	__u64 min_transid;
	__u64 max_transid;

	/* keys returned will be >= min and <= max */
	__u32 min_type;
	__u32 max_type;

	/*
	 * how many items did userland ask for, and how many are we
	 * returning
	 */
	__u32 nr_items;

	/* 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;
};

#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];
};

struct btrfs_ioctl_clone_range_args {
  __s64 src_fd;
  __u64 src_offset, src_length;
  __u64 dest_offset;
};

/* flags for the defrag range ioctl */
#define BTRFS_DEFRAG_RANGE_COMPRESS 1
#define BTRFS_DEFRAG_RANGE_START_IO 2

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[0];
};

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[0];		/* 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[4];
	/* struct btrfs_data_container	*inodes;	out   */
	__u64				inodes;
};

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];

	__u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */
};

#define BTRFS_QUOTA_CTL_ENABLE	1
#define BTRFS_QUOTA_CTL_DISABLE	2
#define BTRFS_QUOTA_CTL_RESCAN	3
struct btrfs_ioctl_quota_ctl_args {
	__u64 cmd;
	__u64 status;
};

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 */
};

struct btrfs_ioctl_send_args {
	__s64 send_fd;			/* in */
	__u64 clone_sources_count;	/* in */
	__u64 __user *clone_sources;	/* in */
	__u64 parent_root;		/* in */
	__u64 flags;			/* in */
	__u64 reserved[4];		/* in */
};

#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)
/* 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_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_ino_path_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_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
				      struct btrfs_ioctl_get_dev_stats)
#endif
Commit	Line	Data
6cbd5570 CM	1	/*
	2	* Copyright (C) 2007 Oracle. All rights reserved.
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public
	6	* License v2 as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	11	* General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public
	14	* License along with this program; if not, write to the
	15	* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	16	* Boston, MA 021110-1307, USA.
	17	*/
	18
c5739bba CM	19	#ifndef __IOCTL_
	20	#define __IOCTL_
	21	#include <linux/ioctl.h>
	22
	23	#define BTRFS_IOCTL_MAGIC 0x94
	24	#define BTRFS_VOL_NAME_MAX 255
8a4b83cc	25
c071fcfd	26	/* this should be 4k */
72fd032e	27	#define BTRFS_PATH_NAME_MAX 4087
c5739bba	28	struct btrfs_ioctl_vol_args {
3de4586c	29	__s64 fd;
8a4b83cc	30	char name[BTRFS_PATH_NAME_MAX + 1];
c5739bba CM	31	};
c5739bba CM	32
fdfb1e4f	33	#define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)
b83cc969	34	#define BTRFS_SUBVOL_RDONLY (1ULL << 1)
6f72c7e2	35	#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
475f6387 JS	36	#define BTRFS_FSID_SIZE 16
475f6387 JS	37	#define BTRFS_UUID_SIZE 16
fdfb1e4f	38
bed92eae AJ	39	#define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0)
	40
	41	struct btrfs_qgroup_limit {
	42	__u64 flags;
	43	__u64 max_rfer;
	44	__u64 max_excl;
	45	__u64 rsv_rfer;
	46	__u64 rsv_excl;
	47	};
	48
	49	struct btrfs_qgroup_inherit {
	50	__u64 flags;
	51	__u64 num_qgroups;
	52	__u64 num_ref_copies;
	53	__u64 num_excl_copies;
	54	struct btrfs_qgroup_limit lim;
	55	__u64 qgroups[0];
	56	};
	57
	58	struct btrfs_ioctl_qgroup_limit_args {
	59	__u64 qgroupid;
	60	struct btrfs_qgroup_limit lim;
	61	};
	62
fdfb1e4f LZ	63	#define BTRFS_SUBVOL_NAME_MAX 4039
fdfb1e4f LZ	64	struct btrfs_ioctl_vol_args_v2 {
72fd032e SW	65	__s64 fd;
72fd032e SW	66	__u64 transid;
fdfb1e4f	67	__u64 flags;
6f72c7e2 AJ	68	union {
	69	struct {
	70	__u64 size;
	71	struct btrfs_qgroup_inherit __user *qgroup_inherit;
	72	};
	73	__u64 unused[4];
	74	};
fdfb1e4f	75	char name[BTRFS_SUBVOL_NAME_MAX + 1];
72fd032e SW	76	};
72fd032e SW	77
a2de733c AJ	78	/*
	79	* structure to report errors and progress to userspace, either as a
	80	* result of a finished scrub, a canceled scrub or a progress inquiry
	81	*/
	82	struct btrfs_scrub_progress {
	83	__u64 data_extents_scrubbed; /* # of data extents scrubbed */
	84	__u64 tree_extents_scrubbed; /* # of tree extents scrubbed */
	85	__u64 data_bytes_scrubbed; /* # of data bytes scrubbed */
	86	__u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */
	87	__u64 read_errors; /* # of read errors encountered (EIO) */
	88	__u64 csum_errors; /* # of failed csum checks */
	89	__u64 verify_errors; /* # of occurences, where the metadata
	90	* of a tree block did not match the
	91	* expected values, like generation or
	92	* logical */
	93	__u64 no_csum; /* # of 4k data block for which no csum
	94	* is present, probably the result of
	95	* data written with nodatasum */
	96	__u64 csum_discards; /* # of csum for which no data was found
	97	* in the extent tree. */
	98	__u64 super_errors; /* # of bad super blocks encountered */
	99	__u64 malloc_errors; /* # of internal kmalloc errors. These
	100	* will likely cause an incomplete
	101	* scrub */
	102	__u64 uncorrectable_errors; /* # of errors where either no intact
	103	* copy was found or the writeback
	104	* failed */
	105	__u64 corrected_errors; /* # of errors corrected */
	106	__u64 last_physical; /* last physical address scrubbed. In
	107	* case a scrub was aborted, this can
	108	* be used to restart the scrub */
	109	__u64 unverified_errors; /* # of occurences where a read for a
	110	* full (64k) bio failed, but the re-
	111	* check succeeded for each 4k piece.
	112	* Intermittent error. */
	113	};
	114
8628764e	115	#define BTRFS_SCRUB_READONLY 1
475f6387 JS	116	struct btrfs_ioctl_scrub_args {
	117	__u64 devid; /* in */
	118	__u64 start; /* in */
	119	__u64 end; /* in */
	120	__u64 flags; /* in */
	121	struct btrfs_scrub_progress progress; /* out */
	122	/* pad to 1k */
	123	__u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
	124	};
	125
	126	#define BTRFS_DEVICE_PATH_NAME_MAX 1024
	127	struct btrfs_ioctl_dev_info_args {
	128	__u64 devid; /* in/out */
	129	__u8 uuid[BTRFS_UUID_SIZE]; /* in/out */
	130	__u64 bytes_used; /* out */
	131	__u64 total_bytes; /* out */
	132	__u64 unused[379]; /* pad to 4k */
	133	__u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
	134	};
	135
	136	struct btrfs_ioctl_fs_info_args {
	137	__u64 max_id; /* out */
	138	__u64 num_devices; /* out */
	139	__u8 fsid[BTRFS_FSID_SIZE]; /* out */
	140	__u64 reserved[124]; /* pad to 1k */
	141	};
	142
837d5b6e ID	143	/* balance control ioctl modes */
837d5b6e ID	144	#define BTRFS_BALANCE_CTL_PAUSE 1
a7e99c69	145	#define BTRFS_BALANCE_CTL_CANCEL 2
837d5b6e	146
c9e9f97b ID	147	/*
	148	* this is packed, because it should be exactly the same as its disk
	149	* byte order counterpart (struct btrfs_disk_balance_args)
	150	*/
	151	struct btrfs_balance_args {
	152	__u64 profiles;
	153	__u64 usage;
	154	__u64 devid;
	155	__u64 pstart;
	156	__u64 pend;
	157	__u64 vstart;
	158	__u64 vend;
	159
	160	__u64 target;
	161
	162	__u64 flags;
	163
	164	__u64 unused[8];
	165	} __attribute__ ((__packed__));
	166
	167	/* report balance progress to userspace */
	168	struct btrfs_balance_progress {
	169	__u64 expected; /* estimated # of chunks that will be
	170	* relocated to fulfill the request */
	171	__u64 considered; /* # of chunks we have considered so far */
	172	__u64 completed; /* # of chunks relocated so far */
	173	};
	174
837d5b6e ID	175	#define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)
837d5b6e ID	176	#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
a7e99c69	177	#define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
837d5b6e	178
c9e9f97b ID	179	struct btrfs_ioctl_balance_args {
	180	__u64 flags; /* in/out */
	181	__u64 state; /* out */
	182
	183	struct btrfs_balance_args data; /* in/out */
	184	struct btrfs_balance_args meta; /* in/out */
	185	struct btrfs_balance_args sys; /* in/out */
	186
	187	struct btrfs_balance_progress stat; /* out */
	188
	189	__u64 unused[72]; /* pad to 1k */
	190	};
	191
ac8e9819 CM	192	#define BTRFS_INO_LOOKUP_PATH_MAX 4080
	193	struct btrfs_ioctl_ino_lookup_args {
	194	__u64 treeid;
	195	__u64 objectid;
	196	char name[BTRFS_INO_LOOKUP_PATH_MAX];
	197	};
	198
	199	struct btrfs_ioctl_search_key {
	200	/* which root are we searching. 0 is the tree of tree roots */
	201	__u64 tree_id;
	202
	203	/* keys returned will be >= min and <= max */
	204	__u64 min_objectid;
	205	__u64 max_objectid;
	206
	207	/* keys returned will be >= min and <= max */
	208	__u64 min_offset;
	209	__u64 max_offset;
	210
	211	/* max and min transids to search for */
	212	__u64 min_transid;
	213	__u64 max_transid;
	214
	215	/* keys returned will be >= min and <= max */
	216	__u32 min_type;
	217	__u32 max_type;
	218
	219	/*
	220	* how many items did userland ask for, and how many are we
	221	* returning
	222	*/
	223	__u32 nr_items;
	224
	225	/* align to 64 bits */
	226	__u32 unused;
	227
	228	/* some extra for later */
	229	__u64 unused1;
	230	__u64 unused2;
	231	__u64 unused3;
	232	__u64 unused4;
	233	};
	234
	235	struct btrfs_ioctl_search_header {
	236	__u64 transid;
	237	__u64 objectid;
	238	__u64 offset;
	239	__u32 type;
	240	__u32 len;
	241	};
	242
	243	#define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
	244	/*
	245	* the buf is an array of search headers where
	246	* each header is followed by the actual item
	247	* the type field is expanded to 32 bits for alignment
	248	*/
	249	struct btrfs_ioctl_search_args {
	250	struct btrfs_ioctl_search_key key;
	251	char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
	252	};
	253
c071fcfd CM	254	struct btrfs_ioctl_clone_range_args {
	255	__s64 src_fd;
	256	__u64 src_offset, src_length;
	257	__u64 dest_offset;
	258	};
	259
1e701a32 CM	260	/* flags for the defrag range ioctl */
	261	#define BTRFS_DEFRAG_RANGE_COMPRESS 1
	262	#define BTRFS_DEFRAG_RANGE_START_IO 2
	263
1406e432	264	struct btrfs_ioctl_space_info {
ce769a29 SW	265	__u64 flags;
	266	__u64 total_bytes;
	267	__u64 used_bytes;
1406e432 JB	268	};
	269
	270	struct btrfs_ioctl_space_args {
ce769a29 SW	271	__u64 space_slots;
ce769a29 SW	272	__u64 total_spaces;
1406e432 JB	273	struct btrfs_ioctl_space_info spaces[0];
1406e432 JB	274	};
1e701a32	275
a542ad1b JS	276	struct btrfs_data_container {
	277	__u32 bytes_left; /* out -- bytes not needed to deliver output */
	278	__u32 bytes_missing; /* out -- additional bytes needed for result */
	279	__u32 elem_cnt; /* out */
	280	__u32 elem_missed; /* out */
740c3d22	281	__u64 val[0]; /* out */
a542ad1b JS	282	};
a542ad1b JS	283
d7728c96 JS	284	struct btrfs_ioctl_ino_path_args {
d7728c96 JS	285	__u64 inum; /* in */
d04b1deb	286	__u64 size; /* in */
d7728c96	287	__u64 reserved[4];
740c3d22 CM	288	/* struct btrfs_data_container fspath; out /
740c3d22 CM	289	__u64 fspath; /* out */
d7728c96 JS	290	};
	291
	292	struct btrfs_ioctl_logical_ino_args {
	293	__u64 logical; /* in */
d04b1deb	294	__u64 size; /* in */
d7728c96	295	__u64 reserved[4];
740c3d22 CM	296	/* struct btrfs_data_container inodes; out /
740c3d22 CM	297	__u64 inodes;
d7728c96 JS	298	};
d7728c96 JS	299
442a4f63 SB	300	enum btrfs_dev_stat_values {
	301	/* disk I/O failure stats */
	302	BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
	303	BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
	304	BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
	305
	306	/* stats for indirect indications for I/O failures */
	307	BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
	308	* contents is illegal: this is an
	309	* indication that the block was damaged
	310	* during read or write, or written to
	311	* wrong location or read from wrong
	312	* location */
	313	BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
	314	* been written */
	315
	316	BTRFS_DEV_STAT_VALUES_MAX
	317	};
	318
b27f7c0c DS	319	/* Reset statistics after reading; needs SYS_ADMIN capability */
	320	#define BTRFS_DEV_STATS_RESET (1ULL << 0)
	321
c11d2c23 SB	322	struct btrfs_ioctl_get_dev_stats {
	323	__u64 devid; /* in */
	324	__u64 nr_items; /* in/out */
b27f7c0c	325	__u64 flags; /* in/out */
c11d2c23 SB	326
	327	/* out values: */
	328	__u64 values[BTRFS_DEV_STAT_VALUES_MAX];
	329
	330	__u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */
	331	};
	332
5d13a37b AJ	333	#define BTRFS_QUOTA_CTL_ENABLE 1
	334	#define BTRFS_QUOTA_CTL_DISABLE 2
	335	#define BTRFS_QUOTA_CTL_RESCAN 3
	336	struct btrfs_ioctl_quota_ctl_args {
	337	__u64 cmd;
	338	__u64 status;
	339	};
	340
	341	struct btrfs_ioctl_qgroup_assign_args {
	342	__u64 assign;
	343	__u64 src;
	344	__u64 dst;
	345	};
	346
	347	struct btrfs_ioctl_qgroup_create_args {
	348	__u64 create;
	349	__u64 qgroupid;
	350	};
8ea05e3a AB	351	struct btrfs_ioctl_timespec {
	352	__u64 sec;
	353	__u32 nsec;
	354	};
	355
	356	struct btrfs_ioctl_received_subvol_args {
	357	char uuid[BTRFS_UUID_SIZE]; /* in */
	358	__u64 stransid; /* in */
	359	__u64 rtransid; /* out */
	360	struct btrfs_ioctl_timespec stime; /* in */
	361	struct btrfs_ioctl_timespec rtime; /* out */
	362	__u64 flags; /* in */
	363	__u64 reserved[16]; /* in */
	364	};
	365
31db9f7c AB	366	struct btrfs_ioctl_send_args {
	367	__s64 send_fd; /* in */
	368	__u64 clone_sources_count; /* in */
	369	__u64 __user clone_sources; / in */
	370	__u64 parent_root; /* in */
	371	__u64 flags; /* in */
	372	__u64 reserved[4]; /* in */
	373	};
5d13a37b	374
c5739bba CM	375	#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
c5739bba CM	376	struct btrfs_ioctl_vol_args)
6702ed49	377	#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
8352d8a4	378	struct btrfs_ioctl_vol_args)
edbd8d4e CM	379	#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
edbd8d4e CM	380	struct btrfs_ioctl_vol_args)
8a4b83cc CM	381	#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
8a4b83cc CM	382	struct btrfs_ioctl_vol_args)
6bf13c0c SW	383	/* trans start and trans end are dangerous, and only for
	384	* use by applications that know how to avoid the
	385	* resulting deadlocks
	386	*/
	387	#define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6)
	388	#define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7)
	389	#define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8)
	390
f2eb0a24	391	#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
788f20eb CM	392	#define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
	393	struct btrfs_ioctl_vol_args)
	394	#define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
	395	struct btrfs_ioctl_vol_args)
	396	#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
	397	struct btrfs_ioctl_vol_args)
c5c9cd4d SW	398
	399	#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
	400	struct btrfs_ioctl_clone_range_args)
	401
3de4586c CM	402	#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
3de4586c CM	403	struct btrfs_ioctl_vol_args)
76dda93c YZ	404	#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
76dda93c YZ	405	struct btrfs_ioctl_vol_args)
1e701a32 CM	406	#define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
1e701a32 CM	407	struct btrfs_ioctl_defrag_range_args)
ac8e9819 CM	408	#define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
	409	struct btrfs_ioctl_search_args)
	410	#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
	411	struct btrfs_ioctl_ino_lookup_args)
6ef5ed0d	412	#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64)
1406e432 JB	413	#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
1406e432 JB	414	struct btrfs_ioctl_space_args)
46204592 SW	415	#define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
46204592 SW	416	#define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
fdfb1e4f LZ	417	#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
fdfb1e4f LZ	418	struct btrfs_ioctl_vol_args_v2)
6f72c7e2 AJ	419	#define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
6f72c7e2 AJ	420	struct btrfs_ioctl_vol_args_v2)
d3a94048	421	#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
0caa102d	422	#define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
475f6387 JS	423	#define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
	424	struct btrfs_ioctl_scrub_args)
	425	#define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
	426	#define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
	427	struct btrfs_ioctl_scrub_args)
	428	#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
	429	struct btrfs_ioctl_dev_info_args)
	430	#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
	431	struct btrfs_ioctl_fs_info_args)
c9e9f97b ID	432	#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
c9e9f97b ID	433	struct btrfs_ioctl_balance_args)
837d5b6e	434	#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
19a39dce ID	435	#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
19a39dce ID	436	struct btrfs_ioctl_balance_args)
d7728c96 JS	437	#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
	438	struct btrfs_ioctl_ino_path_args)
	439	#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
	440	struct btrfs_ioctl_ino_path_args)
8ea05e3a AB	441	#define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
8ea05e3a AB	442	struct btrfs_ioctl_received_subvol_args)
31db9f7c	443	#define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
02db0844 JB	444	#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
02db0844 JB	445	struct btrfs_ioctl_vol_args)
5d13a37b AJ	446	#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
	447	struct btrfs_ioctl_quota_ctl_args)
	448	#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
	449	struct btrfs_ioctl_qgroup_assign_args)
	450	#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
	451	struct btrfs_ioctl_qgroup_create_args)
	452	#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
	453	struct btrfs_ioctl_qgroup_limit_args)
c11d2c23 SB	454	#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
c11d2c23 SB	455	struct btrfs_ioctl_get_dev_stats)
c5739bba	456	#endif