[deliverable/linux.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_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 */
	__u8 srcdev_name[BTRFS_PATH_NAME_MAX + 1];	/* in */
	__u8 tgtdev_name[BTRFS_PATH_NAME_MAX + 1];	/* in */
	__u64 cont_reading_from_srcdev_mode;	/* in, see #define
						 * above */
};

#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
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];
};

#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)
#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
				    struct btrfs_ioctl_dev_replace_args)

#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
e93c89c1 SB	126	#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0
	127	#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1
	128	struct btrfs_ioctl_dev_replace_start_params {
	129	__u64 srcdevid; /* in, if 0, use srcdev_name instead */
	130	__u8 srcdev_name[BTRFS_PATH_NAME_MAX + 1]; /* in */
	131	__u8 tgtdev_name[BTRFS_PATH_NAME_MAX + 1]; /* in */
	132	__u64 cont_reading_from_srcdev_mode; /* in, see #define
	133	* above */
	134	};
	135
	136	#define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0
	137	#define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1
	138	#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2
	139	#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3
	140	#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4
	141	struct btrfs_ioctl_dev_replace_status_params {
	142	__u64 replace_state; /* out, see #define above */
	143	__u64 progress_1000; /* out, 0 <= x <= 1000 */
	144	__u64 time_started; /* out, seconds since 1-Jan-1970 */
	145	__u64 time_stopped; /* out, seconds since 1-Jan-1970 */
	146	__u64 num_write_errors; /* out */
	147	__u64 num_uncorrectable_read_errors; /* out */
	148	};
	149
	150	#define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0
	151	#define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1
	152	#define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2
	153	#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0
	154	#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1
	155	#define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2
	156	struct btrfs_ioctl_dev_replace_args {
	157	__u64 cmd; /* in */
	158	__u64 result; /* out */
	159
	160	union {
	161	struct btrfs_ioctl_dev_replace_start_params start;
	162	struct btrfs_ioctl_dev_replace_status_params status;
	163	}; /* in/out */
	164
	165	__u64 spare[64];
	166	};
	167
475f6387 JS	168	#define BTRFS_DEVICE_PATH_NAME_MAX 1024
	169	struct btrfs_ioctl_dev_info_args {
	170	__u64 devid; /* in/out */
	171	__u8 uuid[BTRFS_UUID_SIZE]; /* in/out */
	172	__u64 bytes_used; /* out */
	173	__u64 total_bytes; /* out */
	174	__u64 unused[379]; /* pad to 4k */
	175	__u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
	176	};
	177
	178	struct btrfs_ioctl_fs_info_args {
	179	__u64 max_id; /* out */
	180	__u64 num_devices; /* out */
	181	__u8 fsid[BTRFS_FSID_SIZE]; /* out */
	182	__u64 reserved[124]; /* pad to 1k */
	183	};
	184
837d5b6e ID	185	/* balance control ioctl modes */
837d5b6e ID	186	#define BTRFS_BALANCE_CTL_PAUSE 1
a7e99c69	187	#define BTRFS_BALANCE_CTL_CANCEL 2
837d5b6e	188
c9e9f97b ID	189	/*
	190	* this is packed, because it should be exactly the same as its disk
	191	* byte order counterpart (struct btrfs_disk_balance_args)
	192	*/
	193	struct btrfs_balance_args {
	194	__u64 profiles;
	195	__u64 usage;
	196	__u64 devid;
	197	__u64 pstart;
	198	__u64 pend;
	199	__u64 vstart;
	200	__u64 vend;
	201
	202	__u64 target;
	203
	204	__u64 flags;
	205
	206	__u64 unused[8];
	207	} __attribute__ ((__packed__));
	208
	209	/* report balance progress to userspace */
	210	struct btrfs_balance_progress {
	211	__u64 expected; /* estimated # of chunks that will be
	212	* relocated to fulfill the request */
	213	__u64 considered; /* # of chunks we have considered so far */
	214	__u64 completed; /* # of chunks relocated so far */
	215	};
	216
837d5b6e ID	217	#define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)
837d5b6e ID	218	#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
a7e99c69	219	#define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
837d5b6e	220
c9e9f97b ID	221	struct btrfs_ioctl_balance_args {
	222	__u64 flags; /* in/out */
	223	__u64 state; /* out */
	224
	225	struct btrfs_balance_args data; /* in/out */
	226	struct btrfs_balance_args meta; /* in/out */
	227	struct btrfs_balance_args sys; /* in/out */
	228
	229	struct btrfs_balance_progress stat; /* out */
	230
	231	__u64 unused[72]; /* pad to 1k */
	232	};
	233
ac8e9819 CM	234	#define BTRFS_INO_LOOKUP_PATH_MAX 4080
	235	struct btrfs_ioctl_ino_lookup_args {
	236	__u64 treeid;
	237	__u64 objectid;
	238	char name[BTRFS_INO_LOOKUP_PATH_MAX];
	239	};
	240
	241	struct btrfs_ioctl_search_key {
	242	/* which root are we searching. 0 is the tree of tree roots */
	243	__u64 tree_id;
	244
	245	/* keys returned will be >= min and <= max */
	246	__u64 min_objectid;
	247	__u64 max_objectid;
	248
	249	/* keys returned will be >= min and <= max */
	250	__u64 min_offset;
	251	__u64 max_offset;
	252
	253	/* max and min transids to search for */
	254	__u64 min_transid;
	255	__u64 max_transid;
	256
	257	/* keys returned will be >= min and <= max */
	258	__u32 min_type;
	259	__u32 max_type;
	260
	261	/*
	262	* how many items did userland ask for, and how many are we
	263	* returning
	264	*/
	265	__u32 nr_items;
	266
	267	/* align to 64 bits */
	268	__u32 unused;
	269
	270	/* some extra for later */
	271	__u64 unused1;
	272	__u64 unused2;
	273	__u64 unused3;
	274	__u64 unused4;
	275	};
	276
	277	struct btrfs_ioctl_search_header {
	278	__u64 transid;
	279	__u64 objectid;
	280	__u64 offset;
	281	__u32 type;
	282	__u32 len;
	283	};
	284
	285	#define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
	286	/*
	287	* the buf is an array of search headers where
	288	* each header is followed by the actual item
	289	* the type field is expanded to 32 bits for alignment
	290	*/
	291	struct btrfs_ioctl_search_args {
	292	struct btrfs_ioctl_search_key key;
	293	char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
	294	};
	295
c071fcfd CM	296	struct btrfs_ioctl_clone_range_args {
	297	__s64 src_fd;
	298	__u64 src_offset, src_length;
	299	__u64 dest_offset;
	300	};
	301
1e701a32 CM	302	/* flags for the defrag range ioctl */
	303	#define BTRFS_DEFRAG_RANGE_COMPRESS 1
	304	#define BTRFS_DEFRAG_RANGE_START_IO 2
	305
1406e432	306	struct btrfs_ioctl_space_info {
ce769a29 SW	307	__u64 flags;
	308	__u64 total_bytes;
	309	__u64 used_bytes;
1406e432 JB	310	};
	311
	312	struct btrfs_ioctl_space_args {
ce769a29 SW	313	__u64 space_slots;
ce769a29 SW	314	__u64 total_spaces;
1406e432 JB	315	struct btrfs_ioctl_space_info spaces[0];
1406e432 JB	316	};
1e701a32	317
a542ad1b JS	318	struct btrfs_data_container {
	319	__u32 bytes_left; /* out -- bytes not needed to deliver output */
	320	__u32 bytes_missing; /* out -- additional bytes needed for result */
	321	__u32 elem_cnt; /* out */
	322	__u32 elem_missed; /* out */
740c3d22	323	__u64 val[0]; /* out */
a542ad1b JS	324	};
a542ad1b JS	325
d7728c96 JS	326	struct btrfs_ioctl_ino_path_args {
d7728c96 JS	327	__u64 inum; /* in */
d04b1deb	328	__u64 size; /* in */
d7728c96	329	__u64 reserved[4];
740c3d22 CM	330	/* struct btrfs_data_container fspath; out /
740c3d22 CM	331	__u64 fspath; /* out */
d7728c96 JS	332	};
	333
	334	struct btrfs_ioctl_logical_ino_args {
	335	__u64 logical; /* in */
d04b1deb	336	__u64 size; /* in */
d7728c96	337	__u64 reserved[4];
740c3d22 CM	338	/* struct btrfs_data_container inodes; out /
740c3d22 CM	339	__u64 inodes;
d7728c96 JS	340	};
d7728c96 JS	341
442a4f63 SB	342	enum btrfs_dev_stat_values {
	343	/* disk I/O failure stats */
	344	BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
	345	BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
	346	BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
	347
	348	/* stats for indirect indications for I/O failures */
	349	BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
	350	* contents is illegal: this is an
	351	* indication that the block was damaged
	352	* during read or write, or written to
	353	* wrong location or read from wrong
	354	* location */
	355	BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
	356	* been written */
	357
	358	BTRFS_DEV_STAT_VALUES_MAX
	359	};
	360
b27f7c0c DS	361	/* Reset statistics after reading; needs SYS_ADMIN capability */
	362	#define BTRFS_DEV_STATS_RESET (1ULL << 0)
	363
c11d2c23 SB	364	struct btrfs_ioctl_get_dev_stats {
	365	__u64 devid; /* in */
	366	__u64 nr_items; /* in/out */
b27f7c0c	367	__u64 flags; /* in/out */
c11d2c23 SB	368
	369	/* out values: */
	370	__u64 values[BTRFS_DEV_STAT_VALUES_MAX];
	371
	372	__u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */
	373	};
	374
5d13a37b AJ	375	#define BTRFS_QUOTA_CTL_ENABLE 1
	376	#define BTRFS_QUOTA_CTL_DISABLE 2
	377	#define BTRFS_QUOTA_CTL_RESCAN 3
	378	struct btrfs_ioctl_quota_ctl_args {
	379	__u64 cmd;
	380	__u64 status;
	381	};
	382
	383	struct btrfs_ioctl_qgroup_assign_args {
	384	__u64 assign;
	385	__u64 src;
	386	__u64 dst;
	387	};
	388
	389	struct btrfs_ioctl_qgroup_create_args {
	390	__u64 create;
	391	__u64 qgroupid;
	392	};
8ea05e3a AB	393	struct btrfs_ioctl_timespec {
	394	__u64 sec;
	395	__u32 nsec;
	396	};
	397
	398	struct btrfs_ioctl_received_subvol_args {
	399	char uuid[BTRFS_UUID_SIZE]; /* in */
	400	__u64 stransid; /* in */
	401	__u64 rtransid; /* out */
	402	struct btrfs_ioctl_timespec stime; /* in */
	403	struct btrfs_ioctl_timespec rtime; /* out */
	404	__u64 flags; /* in */
	405	__u64 reserved[16]; /* in */
	406	};
	407
31db9f7c AB	408	struct btrfs_ioctl_send_args {
	409	__s64 send_fd; /* in */
	410	__u64 clone_sources_count; /* in */
	411	__u64 __user clone_sources; / in */
	412	__u64 parent_root; /* in */
	413	__u64 flags; /* in */
	414	__u64 reserved[4]; /* in */
	415	};
5d13a37b	416
c5739bba CM	417	#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
c5739bba CM	418	struct btrfs_ioctl_vol_args)
6702ed49	419	#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
8352d8a4	420	struct btrfs_ioctl_vol_args)
edbd8d4e CM	421	#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
edbd8d4e CM	422	struct btrfs_ioctl_vol_args)
8a4b83cc CM	423	#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
8a4b83cc CM	424	struct btrfs_ioctl_vol_args)
6bf13c0c SW	425	/* trans start and trans end are dangerous, and only for
	426	* use by applications that know how to avoid the
	427	* resulting deadlocks
	428	*/
	429	#define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6)
	430	#define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7)
	431	#define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8)
	432
f2eb0a24	433	#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
788f20eb CM	434	#define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
	435	struct btrfs_ioctl_vol_args)
	436	#define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
	437	struct btrfs_ioctl_vol_args)
	438	#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
	439	struct btrfs_ioctl_vol_args)
c5c9cd4d SW	440
	441	#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
	442	struct btrfs_ioctl_clone_range_args)
	443
3de4586c CM	444	#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
3de4586c CM	445	struct btrfs_ioctl_vol_args)
76dda93c YZ	446	#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
76dda93c YZ	447	struct btrfs_ioctl_vol_args)
1e701a32 CM	448	#define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
1e701a32 CM	449	struct btrfs_ioctl_defrag_range_args)
ac8e9819 CM	450	#define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
	451	struct btrfs_ioctl_search_args)
	452	#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
	453	struct btrfs_ioctl_ino_lookup_args)
6ef5ed0d	454	#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64)
1406e432 JB	455	#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
1406e432 JB	456	struct btrfs_ioctl_space_args)
46204592 SW	457	#define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
46204592 SW	458	#define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
fdfb1e4f LZ	459	#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
fdfb1e4f LZ	460	struct btrfs_ioctl_vol_args_v2)
6f72c7e2 AJ	461	#define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
6f72c7e2 AJ	462	struct btrfs_ioctl_vol_args_v2)
d3a94048	463	#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
0caa102d	464	#define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
475f6387 JS	465	#define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
	466	struct btrfs_ioctl_scrub_args)
	467	#define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
	468	#define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
	469	struct btrfs_ioctl_scrub_args)
	470	#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
	471	struct btrfs_ioctl_dev_info_args)
	472	#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
	473	struct btrfs_ioctl_fs_info_args)
c9e9f97b ID	474	#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
c9e9f97b ID	475	struct btrfs_ioctl_balance_args)
837d5b6e	476	#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
19a39dce ID	477	#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
19a39dce ID	478	struct btrfs_ioctl_balance_args)
d7728c96 JS	479	#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
	480	struct btrfs_ioctl_ino_path_args)
	481	#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
	482	struct btrfs_ioctl_ino_path_args)
8ea05e3a AB	483	#define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
8ea05e3a AB	484	struct btrfs_ioctl_received_subvol_args)
31db9f7c	485	#define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
02db0844 JB	486	#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
02db0844 JB	487	struct btrfs_ioctl_vol_args)
5d13a37b AJ	488	#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
	489	struct btrfs_ioctl_quota_ctl_args)
	490	#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
	491	struct btrfs_ioctl_qgroup_assign_args)
	492	#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
	493	struct btrfs_ioctl_qgroup_create_args)
	494	#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
	495	struct btrfs_ioctl_qgroup_limit_args)
c11d2c23 SB	496	#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
c11d2c23 SB	497	struct btrfs_ioctl_get_dev_stats)
e93c89c1 SB	498	#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
	499	struct btrfs_ioctl_dev_replace_args)
	500
c5739bba	501	#endif