[dragonfly.git] / sys / vfs / hammer / hammer_ioctl.h

/*
 * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
 * 
 * This code is derived from software contributed to The DragonFly Project
 * by Matthew Dillon <dillon@backplane.com>
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * $DragonFly: src/sys/vfs/hammer/hammer_ioctl.h,v 1.23 2008/11/13 02:18:43 dillon Exp $
 */
/*
 * HAMMER ioctl's.  This file can be #included from userland
 */

#ifndef VFS_HAMMER_IOCTL_H_
#define VFS_HAMMER_IOCTL_H_

#include <sys/types.h>
#include <sys/ioccom.h>
#include "hammer_disk.h"

/*
 * Common HAMMER ioctl header
 *
 * Global flags are stored in the upper 16 bits.
 */
struct hammer_ioc_head {
	int32_t		flags;
	int32_t		error;
	int32_t		reserved02[4];
};

#define HAMMER_IOC_HEAD_ERROR	0x00008000
#define HAMMER_IOC_HEAD_INTR	0x00010000
#define HAMMER_IOC_DO_BTREE	0x00020000	/* reblocker */
#define HAMMER_IOC_DO_INODES	0x00040000	/* reblocker */
#define HAMMER_IOC_DO_DATA	0x00080000	/* reblocker */
#define HAMMER_IOC_DO_DIRS	0x00100000	/* reblocker */

#define HAMMER_IOC_DO_FLAGS	(HAMMER_IOC_DO_BTREE |	\
				 HAMMER_IOC_DO_INODES |	\
				 HAMMER_IOC_DO_DATA |	\
				 HAMMER_IOC_DO_DIRS)

/*
 * HAMMERIOC_PRUNE
 *
 * beg/end TID ranges in the element array must be sorted in descending
 * order, with the most recent (highest) range at elms[0].
 */
struct hammer_ioc_prune_elm {
	hammer_tid_t	beg_tid;	/* starting tid */
	hammer_tid_t	end_tid;	/* ending tid (non inclusive) */
	hammer_tid_t	mod_tid;	/* modulo */
};

#define HAMMER_MAX_PRUNE_ELMS	(1024*1024/24)

struct hammer_ioc_prune {
	struct hammer_ioc_head head;
	int		nelms;
	int		reserved01;

	struct hammer_base_elm key_beg;	/* stop forward scan (reverse scan) */
	struct hammer_base_elm key_end;	/* start forward scan (reverse scan) */
	struct hammer_base_elm key_cur;	/* scan interruption point */

	int64_t		stat_scanrecords;/* number of records scanned */
	int64_t		stat_rawrecords; /* number of raw records pruned */
	int64_t		stat_dirrecords; /* number of dir records pruned */
	int64_t		stat_bytes;	 /* number of data bytes pruned */
	int64_t		stat_realignments; /* number of raw records realigned */
	hammer_tid_t	stat_oldest_tid; /* oldest create_tid encountered */
	int64_t		reserved02[6];
	struct hammer_ioc_prune_elm *elms; /* user supplied array */
};

#define HAMMER_IOC_PRUNE_ALL	0x0001

/*
 * HAMMERIOC_REPACK
 *
 * Forward scan leaf-up B-Tree packing.  The saturation point is typically
 * set to HAMMER_BTREE_LEAF_ELMS * 2 / 3 for 2/3rds fill.  Referenced nodes
 * have to be skipped, we can't track cursors through pack ops.
 */
struct hammer_ioc_rebalance {
	struct hammer_ioc_head head;
	int		saturation;	/* saturation pt elements/node */
	int		reserved02;

	struct hammer_base_elm key_beg;	/* start forward scan */
	struct hammer_base_elm key_end; /* stop forward scan (inclusive) */
	struct hammer_base_elm key_cur; /* current scan index */

	int64_t		stat_ncount;	/* number of nodes scanned */
	int64_t		stat_deletions; /* number of nodes deleted */
	int64_t		stat_collisions;/* number of collision retries */
	int64_t		stat_nrebal;	/* number of btree-nodes rebalanced */
	int64_t		stat_unused04;
};

/*
 * HAMMERIOC_GETHISTORY
 *
 * Retrieve an array of ordered transaction ids >= beg and < end indicating
 * all changes made to the specified object's inode up to the
 * maximum.
 *
 * If ATKEY is set the key field indicates a particular key within the
 * inode to retrieve the history for.
 *
 * On return count is set to the number of elements returned, nxt_tid is
 * set to the tid the caller should store in beg_tid to continue the
 * iteration, and nxt_key is set to the nearest key boundary > key
 * indicating the range key - nxt_key (nxt_key non-inclusive) the tid
 * array represents.  Also obj_id is set to the object's inode number.
 *
 * nxt_key can be used to iterate the contents of a single file but should
 * not be stored in key until all modifications at key have been retrieved.
 * To work properly nxt_key should be initialized to HAMMER_MAX_KEY.
 * Successive ioctl() calls will reduce nxt_key as appropriate so at the
 * end of your iterating for 'key', key to nxt_key will represent the
 * shortest range of keys that all returned TIDs apply to.
 */

#define HAMMER_MAX_HISTORY_ELMS	64

typedef struct hammer_ioc_hist_entry {
	hammer_tid_t	tid;
	u_int32_t	time32;
	u_int32_t	unused;
} *hammer_ioc_hist_entry_t;

struct hammer_ioc_history {
	struct hammer_ioc_head head;
	int64_t		obj_id;
	hammer_tid_t	beg_tid;
	hammer_tid_t	nxt_tid;
	hammer_tid_t	end_tid;
	int64_t		key;
	int64_t		nxt_key;
	int		count;
	int		reserve01;
	struct hammer_ioc_hist_entry hist_ary[HAMMER_MAX_HISTORY_ELMS];
};

#define HAMMER_IOC_HISTORY_ATKEY	0x0001
#define HAMMER_IOC_HISTORY_NEXT_TID	0x0002	/* iterate via nxt_tid */
#define HAMMER_IOC_HISTORY_NEXT_KEY	0x0004	/* iterate via nxt_key */
#define HAMMER_IOC_HISTORY_EOF		0x0008	/* no more keys */
#define HAMMER_IOC_HISTORY_UNSYNCED	0x0010	/* unsynced info in inode */

/*
 * Reblock request
 */
struct hammer_ioc_reblock {
	struct hammer_ioc_head head;
	int32_t		free_level;		/* 0 for maximum compaction */
	u_int32_t	reserved01;

	struct hammer_base_elm key_beg;		/* start forward scan */
	struct hammer_base_elm key_end;		/* stop forward scan */
	struct hammer_base_elm key_cur;		/* scan interruption point */

	int64_t		btree_count;		/* B-Tree nodes checked */
	int64_t		record_count;		/* Records checked */
	int64_t		data_count;		/* Data segments checked */
	int64_t		data_byte_count;	/* Data bytes checked */

	int64_t		btree_moves;		/* B-Tree nodes moved */
	int64_t		record_moves;		/* Records moved */
	int64_t		data_moves;		/* Data segments moved */
	int64_t		data_byte_moves;	/* Data bytes moved */

	int32_t		unused02;
	int32_t		unused03;
};

/*
 * HAMMERIOC_SYNCTID
 */
enum hammer_synctid_op {
	HAMMER_SYNCTID_NONE,	/* no sync (TID will not be accurate) */
	HAMMER_SYNCTID_ASYNC,	/* async (TID will not be accurate) */
	HAMMER_SYNCTID_SYNC1,	/* single sync - might undo after crash */
	HAMMER_SYNCTID_SYNC2	/* double sync - guarantee no undo */
};

struct hammer_ioc_synctid {
	struct hammer_ioc_head	head;
	enum hammer_synctid_op	op;
	hammer_tid_t		tid;
};

/*
 * HAMMERIOC_GET_INFO
 */
struct hammer_ioc_info {
	struct hammer_ioc_head		head;

	char		vol_name[64];
	uuid_t		vol_fsid;
	uuid_t		vol_fstype;

	int		version;
	int		nvolumes;
	int		reserved01;
	int		reserved02;

	int64_t		bigblocks;
	int64_t		freebigblocks;
	int64_t		rsvbigblocks;
	int64_t		inodes;

	int64_t		reservedext[16];
};

/*
 * HAMMERIOC_GET_PSEUDOFS
 * HAMMERIOC_SET_PSEUDOFS
 */
struct hammer_ioc_pseudofs_rw {
	struct hammer_ioc_head	head;
	int			pfs_id;
	u_int32_t		bytes;
	u_int32_t		version;
	u_int32_t		flags;
	struct hammer_pseudofs_data *ondisk;
};

#define HAMMER_IOC_PSEUDOFS_VERSION	1

#define HAMMER_IOC_PFS_SYNC_BEG		0x0001
#define HAMMER_IOC_PFS_SYNC_END		0x0002
#define HAMMER_IOC_PFS_SHARED_UUID	0x0004
#define HAMMER_IOC_PFS_MIRROR_UUID	0x0008
#define HAMMER_IOC_PFS_MASTER_ID	0x0010
#define HAMMER_IOC_PFS_MIRROR_FLAGS	0x0020
#define HAMMER_IOC_PFS_LABEL		0x0040

#define HAMMER_MAX_PFS			65536

/*
 * HAMMERIOC_MIRROR_READ/WRITE
 */
struct hammer_ioc_mirror_rw {
	struct hammer_ioc_head	head;
	struct hammer_base_elm 	key_beg;	/* start forward scan */
	struct hammer_base_elm 	key_end;	/* stop forward scan */
	struct hammer_base_elm	key_cur;	/* interruption point */
	hammer_tid_t		tid_beg;	/* filter modification range */
	hammer_tid_t		tid_end;	/* filter modification range */
	void			*ubuf;		/* user buffer */
	int			count;		/* current size */
	int			size;		/* max size */
	int			pfs_id;		/* PFS id being read/written */
	int			reserved01;
	uuid_t			shared_uuid;	/* validator for safety */
};

/*
 * NOTE: crc is for the data block starting at rec_size, not including the
 * data[] array.
 */
struct hammer_ioc_mrecord_head {
	u_int32_t		signature;	/* signature for byte order */
	u_int32_t		rec_crc;
	u_int32_t		rec_size;
	u_int32_t		type;
	/* extended */
};

typedef struct hammer_ioc_mrecord_head *hammer_ioc_mrecord_head_t;

struct hammer_ioc_mrecord_rec {
	struct hammer_ioc_mrecord_head	head;
	struct hammer_btree_leaf_elm	leaf;
	/* extended by data */
};

struct hammer_ioc_mrecord_skip {
	struct hammer_ioc_mrecord_head	head;
	struct hammer_base_elm	 	skip_beg;
	struct hammer_base_elm 		skip_end;
};

struct hammer_ioc_mrecord_update {
	struct hammer_ioc_mrecord_head	head;
	hammer_tid_t			tid;
};

struct hammer_ioc_mrecord_sync {
	struct hammer_ioc_mrecord_head	head;
};

struct hammer_ioc_mrecord_pfs {
	struct hammer_ioc_mrecord_head	head;
	u_int32_t			version;
	u_int32_t			reserved01;
	struct hammer_pseudofs_data	pfsd;
};

struct hammer_ioc_version {
	struct hammer_ioc_head head;
	u_int32_t		cur_version;
	u_int32_t		min_version;
	u_int32_t		wip_version;
	u_int32_t		max_version;
	char			description[64];
};

struct hammer_ioc_volume {
	struct hammer_ioc_head head;
	char			device_name[MAXPATHLEN];
	int64_t			vol_size;
	int64_t			boot_area_size;
	int64_t			mem_area_size;
};

union hammer_ioc_mrecord_any {
	struct hammer_ioc_mrecord_head	head;
	struct hammer_ioc_mrecord_rec	rec;
	struct hammer_ioc_mrecord_skip	skip;
	struct hammer_ioc_mrecord_update update;
	struct hammer_ioc_mrecord_update sync;
	struct hammer_ioc_mrecord_pfs	pfs;
	struct hammer_ioc_version	version;
};

typedef union hammer_ioc_mrecord_any *hammer_ioc_mrecord_any_t;

/*
 * MREC types.  Flags are in the upper 16 bits but some are also included
 * in the type mask to force them into any switch() on the type.
 *
 * NOTE: Any record whos data is CRC-errored will have HAMMER_MRECF_CRC set,
 *	 and the bit is also part of the type mask.
 */
#define HAMMER_MREC_TYPE_RESERVED	0
#define HAMMER_MREC_TYPE_REC		1	/* record w/ data */
#define HAMMER_MREC_TYPE_PFSD		2	/* (userland only) */
#define HAMMER_MREC_TYPE_UPDATE		3	/* (userland only) */
#define HAMMER_MREC_TYPE_SYNC		4	/* (userland only) */
#define HAMMER_MREC_TYPE_SKIP		5	/* skip-range */
#define HAMMER_MREC_TYPE_PASS		6	/* record for cmp only (pass) */
#define HAMMER_MREC_TYPE_TERM		7	/* (userland only) */
#define HAMMER_MREC_TYPE_IDLE		8	/* (userland only) */

#define HAMMER_MREC_TYPE_REC_BADCRC	(HAMMER_MREC_TYPE_REC | \
					 HAMMER_MRECF_CRC_ERROR)

#define HAMMER_MRECF_TYPE_LOMASK	0x000000FF
#define HAMMER_MRECF_TYPE_MASK		0x800000FF
#define HAMMER_MRECF_CRC_ERROR		0x80000000

#define HAMMER_MRECF_DATA_CRC_BAD	0x40000000
#define HAMMER_MRECF_RECD_CRC_BAD	0x20000000

#define HAMMER_MREC_CRCOFF	(offsetof(struct hammer_ioc_mrecord_head, rec_size))
#define HAMMER_MREC_HEADSIZE	sizeof(struct hammer_ioc_mrecord_head)

#define HAMMER_IOC_MIRROR_SIGNATURE	0x4dd97272U
#define HAMMER_IOC_MIRROR_SIGNATURE_REV	0x7272d94dU

/*
 * HAMMERIOC_ADD_SNAPSHOT - Add snapshot tid(s).
 * HAMMERIOC_DEL_SNAPSHOT - Delete snapshot tids.
 * HAMMERIOC_GET_SNAPSHOT - Get/continue retrieving snapshot tids.
 *			    (finds restart point based on last snaps[] entry)
 *
 * These are per-PFS operations.
 *
 * NOTE: There is no limit on the number of snapshots, but there is a limit
 *	 on how many can be set or returned in each ioctl.
 *
 * NOTE: ADD and DEL start at snap->index.  If an error occurs the index will
 *	 point at the errored record.  snap->index must be set to 0 for GET.
 */
#define HAMMER_SNAPS_PER_IOCTL		16

#define HAMMER_IOC_SNAPSHOT_EOF		0x0008	/* no more keys */

struct hammer_ioc_snapshot {
	struct hammer_ioc_head	head;
	int			unused01;
	u_int32_t		index;
	u_int32_t		count;
	struct hammer_snapshot_data snaps[HAMMER_SNAPS_PER_IOCTL];
};

/*
 * HAMMERIOC_GET_CONFIG
 * HAMMERIOC_SET_CONFIG
 *
 * The configuration space is a freeform nul-terminated string, typically
 * a text file.  It is per-PFS and used by the 'hammer cleanup' utility.
 *
 * The configuration space is NOT mirrored.  mirror-write will ignore
 * configuration space records.
 */
struct hammer_ioc_config {
	struct hammer_ioc_head	head;
	u_int32_t		reserved01;
	u_int32_t		reserved02;
	u_int64_t		reserved03[4];
	struct hammer_config_data config;
};

/*
 * Ioctl cmd ids
 */
#define HAMMERIOC_PRUNE		_IOWR('h',1,struct hammer_ioc_prune)
#define HAMMERIOC_GETHISTORY	_IOWR('h',2,struct hammer_ioc_history)
#define HAMMERIOC_REBLOCK	_IOWR('h',3,struct hammer_ioc_reblock)
#define HAMMERIOC_SYNCTID	_IOWR('h',4,struct hammer_ioc_synctid)
#define HAMMERIOC_SET_PSEUDOFS	_IOWR('h',5,struct hammer_ioc_pseudofs_rw)
#define HAMMERIOC_GET_PSEUDOFS	_IOWR('h',6,struct hammer_ioc_pseudofs_rw)
#define HAMMERIOC_MIRROR_READ	_IOWR('h',7,struct hammer_ioc_mirror_rw)
#define HAMMERIOC_MIRROR_WRITE	_IOWR('h',8,struct hammer_ioc_mirror_rw)
#define HAMMERIOC_UPG_PSEUDOFS	_IOWR('h',9,struct hammer_ioc_pseudofs_rw)
#define HAMMERIOC_DGD_PSEUDOFS	_IOWR('h',10,struct hammer_ioc_pseudofs_rw)
#define HAMMERIOC_RMR_PSEUDOFS	_IOWR('h',11,struct hammer_ioc_pseudofs_rw)
#define HAMMERIOC_WAI_PSEUDOFS	_IOWR('h',12,struct hammer_ioc_pseudofs_rw)
#define HAMMERIOC_GET_VERSION	_IOWR('h',13,struct hammer_ioc_version)
#define HAMMERIOC_SET_VERSION	_IOWR('h',14,struct hammer_ioc_version)
#define HAMMERIOC_REBALANCE	_IOWR('h',15,struct hammer_ioc_rebalance)
#define HAMMERIOC_GET_INFO	_IOR('h',16,struct hammer_ioc_info)
#define HAMMERIOC_ADD_VOLUME 	_IOWR('h',17,struct hammer_ioc_volume)
#define HAMMERIOC_ADD_SNAPSHOT	_IOWR('h',18,struct hammer_ioc_snapshot)
#define HAMMERIOC_DEL_SNAPSHOT	_IOWR('h',19,struct hammer_ioc_snapshot)
#define HAMMERIOC_GET_SNAPSHOT	_IOWR('h',20,struct hammer_ioc_snapshot)
#define HAMMERIOC_GET_CONFIG	_IOWR('h',21,struct hammer_ioc_config)
#define HAMMERIOC_SET_CONFIG	_IOWR('h',22,struct hammer_ioc_config)
#define HAMMERIOC_DEL_VOLUME 	_IOWR('h',24,struct hammer_ioc_volume)

#endif
Commit	Line	Data
7dc57964 MD	1	/*
	2	* Copyright (c) 2008 The DragonFly Project. All rights reserved.
	3	*
	4	* This code is derived from software contributed to The DragonFly Project
	5	* by Matthew Dillon <dillon@backplane.com>
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	*
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in
	15	* the documentation and/or other materials provided with the
	16	* distribution.
	17	* 3. Neither the name of The DragonFly Project nor the names of its
	18	* contributors may be used to endorse or promote products derived
	19	* from this software without specific, prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	22	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	23	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
	24	* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	25	* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
	26	* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
	27	* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	28	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
	29	* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	30	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	31	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	32	* SUCH DAMAGE.
	33	*
44a83111	34	* $DragonFly: src/sys/vfs/hammer/hammer_ioctl.h,v 1.23 2008/11/13 02:18:43 dillon Exp $
7dc57964 MD	35	*/
	36	/*
	37	* HAMMER ioctl's. This file can be #included from userland
	38	*/
	39
	40	#ifndef VFS_HAMMER_IOCTL_H_
	41	#define VFS_HAMMER_IOCTL_H_
	42
	43	#include <sys/types.h>
	44	#include <sys/ioccom.h>
	45	#include "hammer_disk.h"
	46
	47	/*
19619882 MD	48	* Common HAMMER ioctl header
19619882 MD	49	*
2f85fa4d	50	* Global flags are stored in the upper 16 bits.
19619882 MD	51	*/
	52	struct hammer_ioc_head {
	53	int32_t flags;
4c038e17	54	int32_t error;
19619882 MD	55	int32_t reserved02[4];
	56	};
	57
4c038e17	58	#define HAMMER_IOC_HEAD_ERROR 0x00008000
19619882	59	#define HAMMER_IOC_HEAD_INTR 0x00010000
814387f6	60	#define HAMMER_IOC_DO_BTREE 0x00020000 /* reblocker */
2f85fa4d	61	#define HAMMER_IOC_DO_INODES 0x00040000 /* reblocker */
814387f6	62	#define HAMMER_IOC_DO_DATA 0x00080000 /* reblocker */
bf3b416b	63	#define HAMMER_IOC_DO_DIRS 0x00100000 /* reblocker */
814387f6	64
2f85fa4d MD	65	#define HAMMER_IOC_DO_FLAGS (HAMMER_IOC_DO_BTREE \| \
2f85fa4d MD	66	HAMMER_IOC_DO_INODES \| \
bf3b416b MD	67	HAMMER_IOC_DO_DATA \| \
bf3b416b MD	68	HAMMER_IOC_DO_DIRS)
19619882 MD	69
19619882 MD	70	/*
7dc57964 MD	71	* HAMMERIOC_PRUNE
	72	*
	73	* beg/end TID ranges in the element array must be sorted in descending
	74	* order, with the most recent (highest) range at elms[0].
	75	*/
	76	struct hammer_ioc_prune_elm {
	77	hammer_tid_t beg_tid; /* starting tid */
	78	hammer_tid_t end_tid; /* ending tid (non inclusive) */
	79	hammer_tid_t mod_tid; /* modulo */
	80	};
	81
f1785283	82	#define HAMMER_MAX_PRUNE_ELMS (1024*1024/24)
7dc57964 MD	83
7dc57964 MD	84	struct hammer_ioc_prune {
19619882	85	struct hammer_ioc_head head;
7dc57964	86	int nelms;
19619882	87	int reserved01;
dd94f1b1 MD	88
	89	struct hammer_base_elm key_beg; /* stop forward scan (reverse scan) */
	90	struct hammer_base_elm key_end; /* start forward scan (reverse scan) */
	91	struct hammer_base_elm key_cur; /* scan interruption point */
	92
7dc57964 MD	93	int64_t stat_scanrecords;/* number of records scanned */
	94	int64_t stat_rawrecords; /* number of raw records pruned */
	95	int64_t stat_dirrecords; /* number of dir records pruned */
	96	int64_t stat_bytes; /* number of data bytes pruned */
32c90105	97	int64_t stat_realignments; /* number of raw records realigned */
855942b6 MD	98	hammer_tid_t stat_oldest_tid; /* oldest create_tid encountered */
855942b6 MD	99	int64_t reserved02[6];
f1785283	100	struct hammer_ioc_prune_elm elms; / user supplied array */
7dc57964 MD	101	};
7dc57964 MD	102
42c7d26b MD	103	#define HAMMER_IOC_PRUNE_ALL 0x0001
42c7d26b MD	104
797a0b63 MD	105	/*
	106	* HAMMERIOC_REPACK
	107	*
	108	* Forward scan leaf-up B-Tree packing. The saturation point is typically
	109	* set to HAMMER_BTREE_LEAF_ELMS * 2 / 3 for 2/3rds fill. Referenced nodes
	110	* have to be skipped, we can't track cursors through pack ops.
	111	*/
	112	struct hammer_ioc_rebalance {
	113	struct hammer_ioc_head head;
	114	int saturation; /* saturation pt elements/node */
	115	int reserved02;
	116
	117	struct hammer_base_elm key_beg; /* start forward scan */
	118	struct hammer_base_elm key_end; /* stop forward scan (inclusive) */
	119	struct hammer_base_elm key_cur; /* current scan index */
	120
	121	int64_t stat_ncount; /* number of nodes scanned */
	122	int64_t stat_deletions; /* number of nodes deleted */
7ddc70d1 MD	123	int64_t stat_collisions;/* number of collision retries */
	124	int64_t stat_nrebal; /* number of btree-nodes rebalanced */
	125	int64_t stat_unused04;
797a0b63	126	};
42c7d26b	127
7dc57964 MD	128	/*
	129	* HAMMERIOC_GETHISTORY
	130	*
	131	* Retrieve an array of ordered transaction ids >= beg and < end indicating
	132	* all changes made to the specified object's inode up to the
	133	* maximum.
	134	*
	135	* If ATKEY is set the key field indicates a particular key within the
	136	* inode to retrieve the history for.
	137	*
	138	* On return count is set to the number of elements returned, nxt_tid is
	139	* set to the tid the caller should store in beg_tid to continue the
	140	* iteration, and nxt_key is set to the nearest key boundary > key
	141	* indicating the range key - nxt_key (nxt_key non-inclusive) the tid
	142	* array represents. Also obj_id is set to the object's inode number.
	143	*
	144	* nxt_key can be used to iterate the contents of a single file but should
	145	* not be stored in key until all modifications at key have been retrieved.
	146	* To work properly nxt_key should be initialized to HAMMER_MAX_KEY.
	147	* Successive ioctl() calls will reduce nxt_key as appropriate so at the
	148	* end of your iterating for 'key', key to nxt_key will represent the
	149	* shortest range of keys that all returned TIDs apply to.
	150	*/
	151
	152	#define HAMMER_MAX_HISTORY_ELMS 64
	153
dd94f1b1 MD	154	typedef struct hammer_ioc_hist_entry {
	155	hammer_tid_t tid;
	156	u_int32_t time32;
	157	u_int32_t unused;
	158	} *hammer_ioc_hist_entry_t;
	159
7dc57964	160	struct hammer_ioc_history {
19619882	161	struct hammer_ioc_head head;
7dc57964 MD	162	int64_t obj_id;
	163	hammer_tid_t beg_tid;
	164	hammer_tid_t nxt_tid;
	165	hammer_tid_t end_tid;
	166	int64_t key;
	167	int64_t nxt_key;
	168	int count;
19619882	169	int reserve01;
dd94f1b1	170	struct hammer_ioc_hist_entry hist_ary[HAMMER_MAX_HISTORY_ELMS];
7dc57964 MD	171	};
	172
	173	#define HAMMER_IOC_HISTORY_ATKEY 0x0001
	174	#define HAMMER_IOC_HISTORY_NEXT_TID 0x0002 /* iterate via nxt_tid */
	175	#define HAMMER_IOC_HISTORY_NEXT_KEY 0x0004 /* iterate via nxt_key */
	176	#define HAMMER_IOC_HISTORY_EOF 0x0008 /* no more keys */
	177	#define HAMMER_IOC_HISTORY_UNSYNCED 0x0010 /* unsynced info in inode */
	178
bf686dbe MD	179	/*
	180	* Reblock request
	181	*/
	182	struct hammer_ioc_reblock {
19619882	183	struct hammer_ioc_head head;
2f85fa4d MD	184	int32_t free_level; /* 0 for maximum compaction */
	185	u_int32_t reserved01;
	186
dd94f1b1 MD	187	struct hammer_base_elm key_beg; /* start forward scan */
	188	struct hammer_base_elm key_end; /* stop forward scan */
	189	struct hammer_base_elm key_cur; /* scan interruption point */
bf686dbe MD	190
	191	int64_t btree_count; /* B-Tree nodes checked */
	192	int64_t record_count; /* Records checked */
	193	int64_t data_count; /* Data segments checked */
	194	int64_t data_byte_count; /* Data bytes checked */
	195
	196	int64_t btree_moves; /* B-Tree nodes moved */
	197	int64_t record_moves; /* Records moved */
	198	int64_t data_moves; /* Data segments moved */
	199	int64_t data_byte_moves; /* Data bytes moved */
	200
19619882 MD	201	int32_t unused02;
19619882 MD	202	int32_t unused03;
bf686dbe MD	203	};
bf686dbe MD	204
f36a9737	205	/*
dd94f1b1	206	* HAMMERIOC_SYNCTID
f36a9737 MD	207	*/
	208	enum hammer_synctid_op {
	209	HAMMER_SYNCTID_NONE, /* no sync (TID will not be accurate) */
	210	HAMMER_SYNCTID_ASYNC, /* async (TID will not be accurate) */
	211	HAMMER_SYNCTID_SYNC1, /* single sync - might undo after crash */
	212	HAMMER_SYNCTID_SYNC2 /* double sync - guarantee no undo */
	213	};
	214
	215	struct hammer_ioc_synctid {
	216	struct hammer_ioc_head head;
	217	enum hammer_synctid_op op;
	218	hammer_tid_t tid;
	219	};
	220
5a930e66	221	/*
b66b9421 AH	222	* HAMMERIOC_GET_INFO
	223	*/
	224	struct hammer_ioc_info {
	225	struct hammer_ioc_head head;
	226
	227	char vol_name[64];
	228	uuid_t vol_fsid;
	229	uuid_t vol_fstype;
	230
	231	int version;
	232	int nvolumes;
	233	int reserved01;
	234	int reserved02;
	235
	236	int64_t bigblocks;
	237	int64_t freebigblocks;
	238	int64_t rsvbigblocks;
	239	int64_t inodes;
	240
	241	int64_t reservedext[16];
	242	};
	243
	244	/*
dd94f1b1	245	* HAMMERIOC_GET_PSEUDOFS
5fa5c92f	246	* HAMMERIOC_SET_PSEUDOFS
5a930e66	247	*/
5fa5c92f	248	struct hammer_ioc_pseudofs_rw {
5a930e66	249	struct hammer_ioc_head head;
ea434b6f	250	int pfs_id;
5fa5c92f MD	251	u_int32_t bytes;
	252	u_int32_t version;
	253	u_int32_t flags;
	254	struct hammer_pseudofs_data *ondisk;
5a930e66 MD	255	};
5a930e66 MD	256
5fa5c92f MD	257	#define HAMMER_IOC_PSEUDOFS_VERSION 1
	258
	259	#define HAMMER_IOC_PFS_SYNC_BEG 0x0001
	260	#define HAMMER_IOC_PFS_SYNC_END 0x0002
	261	#define HAMMER_IOC_PFS_SHARED_UUID 0x0004
	262	#define HAMMER_IOC_PFS_MIRROR_UUID 0x0008
	263	#define HAMMER_IOC_PFS_MASTER_ID 0x0010
	264	#define HAMMER_IOC_PFS_MIRROR_FLAGS 0x0020
	265	#define HAMMER_IOC_PFS_LABEL 0x0040
	266
ea434b6f MD	267	#define HAMMER_MAX_PFS 65536
ea434b6f MD	268
dd94f1b1 MD	269	/*
	270	* HAMMERIOC_MIRROR_READ/WRITE
	271	*/
	272	struct hammer_ioc_mirror_rw {
	273	struct hammer_ioc_head head;
	274	struct hammer_base_elm key_beg; /* start forward scan */
	275	struct hammer_base_elm key_end; /* stop forward scan */
	276	struct hammer_base_elm key_cur; /* interruption point */
	277	hammer_tid_t tid_beg; /* filter modification range */
	278	hammer_tid_t tid_end; /* filter modification range */
	279	void ubuf; / user buffer */
	280	int count; /* current size */
	281	int size; /* max size */
ea434b6f MD	282	int pfs_id; /* PFS id being read/written */
	283	int reserved01;
	284	uuid_t shared_uuid; /* validator for safety */
dd94f1b1 MD	285	};
dd94f1b1 MD	286
c82af904 MD	287	/*
	288	* NOTE: crc is for the data block starting at rec_size, not including the
	289	* data[] array.
	290	*/
4c038e17	291	struct hammer_ioc_mrecord_head {
dd94f1b1	292	u_int32_t signature; /* signature for byte order */
c82af904	293	u_int32_t rec_crc;
dd94f1b1	294	u_int32_t rec_size;
5fa5c92f	295	u_int32_t type;
4c038e17 MD	296	/* extended */
	297	};
	298
	299	typedef struct hammer_ioc_mrecord_head *hammer_ioc_mrecord_head_t;
	300
	301	struct hammer_ioc_mrecord_rec {
	302	struct hammer_ioc_mrecord_head head;
	303	struct hammer_btree_leaf_elm leaf;
5fa5c92f	304	/* extended by data */
4c038e17	305	};
dd94f1b1	306
4c038e17 MD	307	struct hammer_ioc_mrecord_skip {
	308	struct hammer_ioc_mrecord_head head;
	309	struct hammer_base_elm skip_beg;
	310	struct hammer_base_elm skip_end;
	311	};
	312
	313	struct hammer_ioc_mrecord_update {
	314	struct hammer_ioc_mrecord_head head;
	315	hammer_tid_t tid;
	316	};
5fa5c92f	317
4c038e17 MD	318	struct hammer_ioc_mrecord_sync {
	319	struct hammer_ioc_mrecord_head head;
	320	};
	321
	322	struct hammer_ioc_mrecord_pfs {
	323	struct hammer_ioc_mrecord_head head;
	324	u_int32_t version;
	325	u_int32_t reserved01;
	326	struct hammer_pseudofs_data pfsd;
	327	};
	328
44a83111 MD	329	struct hammer_ioc_version {
	330	struct hammer_ioc_head head;
	331	u_int32_t cur_version;
	332	u_int32_t min_version;
	333	u_int32_t wip_version;
	334	u_int32_t max_version;
	335	char description[64];
	336	};
	337
865c9609	338	struct hammer_ioc_volume {
e27700cf MN	339	struct hammer_ioc_head head;
e27700cf MN	340	char device_name[MAXPATHLEN];
90ecab35 MN	341	int64_t vol_size;
	342	int64_t boot_area_size;
	343	int64_t mem_area_size;
e27700cf MN	344	};
e27700cf MN	345
4c038e17 MD	346	union hammer_ioc_mrecord_any {
	347	struct hammer_ioc_mrecord_head head;
	348	struct hammer_ioc_mrecord_rec rec;
	349	struct hammer_ioc_mrecord_skip skip;
	350	struct hammer_ioc_mrecord_update update;
	351	struct hammer_ioc_mrecord_update sync;
	352	struct hammer_ioc_mrecord_pfs pfs;
44a83111	353	struct hammer_ioc_version version;
4c038e17 MD	354	};
	355
	356	typedef union hammer_ioc_mrecord_any *hammer_ioc_mrecord_any_t;
	357
4c286c36 MD	358	/*
	359	* MREC types. Flags are in the upper 16 bits but some are also included
	360	* in the type mask to force them into any switch() on the type.
	361	*
	362	* NOTE: Any record whos data is CRC-errored will have HAMMER_MRECF_CRC set,
	363	* and the bit is also part of the type mask.
	364	*/
4c038e17 MD	365	#define HAMMER_MREC_TYPE_RESERVED 0
	366	#define HAMMER_MREC_TYPE_REC 1 /* record w/ data */
	367	#define HAMMER_MREC_TYPE_PFSD 2 /* (userland only) */
	368	#define HAMMER_MREC_TYPE_UPDATE 3 /* (userland only) */
	369	#define HAMMER_MREC_TYPE_SYNC 4 /* (userland only) */
	370	#define HAMMER_MREC_TYPE_SKIP 5 /* skip-range */
	371	#define HAMMER_MREC_TYPE_PASS 6 /* record for cmp only (pass) */
7a61b85d	372	#define HAMMER_MREC_TYPE_TERM 7 /* (userland only) */
4889cbd4	373	#define HAMMER_MREC_TYPE_IDLE 8 /* (userland only) */
4c038e17	374
4c286c36 MD	375	#define HAMMER_MREC_TYPE_REC_BADCRC (HAMMER_MREC_TYPE_REC \| \
	376	HAMMER_MRECF_CRC_ERROR)
	377
	378	#define HAMMER_MRECF_TYPE_LOMASK 0x000000FF
	379	#define HAMMER_MRECF_TYPE_MASK 0x800000FF
	380	#define HAMMER_MRECF_CRC_ERROR 0x80000000
	381
	382	#define HAMMER_MRECF_DATA_CRC_BAD 0x40000000
	383	#define HAMMER_MRECF_RECD_CRC_BAD 0x20000000
	384
4c038e17 MD	385	#define HAMMER_MREC_CRCOFF (offsetof(struct hammer_ioc_mrecord_head, rec_size))
4c038e17 MD	386	#define HAMMER_MREC_HEADSIZE sizeof(struct hammer_ioc_mrecord_head)
c82af904	387
dd94f1b1 MD	388	#define HAMMER_IOC_MIRROR_SIGNATURE 0x4dd97272U
	389	#define HAMMER_IOC_MIRROR_SIGNATURE_REV 0x7272d94dU
	390
	391	/*
83f2a3aa MD	392	* HAMMERIOC_ADD_SNAPSHOT - Add snapshot tid(s).
	393	* HAMMERIOC_DEL_SNAPSHOT - Delete snapshot tids.
	394	* HAMMERIOC_GET_SNAPSHOT - Get/continue retrieving snapshot tids.
	395	* (finds restart point based on last snaps[] entry)
	396	*
	397	* These are per-PFS operations.
	398	*
	399	* NOTE: There is no limit on the number of snapshots, but there is a limit
	400	* on how many can be set or returned in each ioctl.
	401	*
	402	* NOTE: ADD and DEL start at snap->index. If an error occurs the index will
	403	* point at the errored record. snap->index must be set to 0 for GET.
	404	*/
	405	#define HAMMER_SNAPS_PER_IOCTL 16
	406
	407	#define HAMMER_IOC_SNAPSHOT_EOF 0x0008 /* no more keys */
	408
	409	struct hammer_ioc_snapshot {
	410	struct hammer_ioc_head head;
	411	int unused01;
	412	u_int32_t index;
	413	u_int32_t count;
	414	struct hammer_snapshot_data snaps[HAMMER_SNAPS_PER_IOCTL];
	415	};
	416
	417	/*
	418	* HAMMERIOC_GET_CONFIG
	419	* HAMMERIOC_SET_CONFIG
	420	*
	421	* The configuration space is a freeform nul-terminated string, typically
	422	* a text file. It is per-PFS and used by the 'hammer cleanup' utility.
	423	*
	424	* The configuration space is NOT mirrored. mirror-write will ignore
	425	* configuration space records.
dd94f1b1	426	*/
83f2a3aa MD	427	struct hammer_ioc_config {
	428	struct hammer_ioc_head head;
	429	u_int32_t reserved01;
	430	u_int32_t reserved02;
	431	u_int64_t reserved03[4];
	432	struct hammer_config_data config;
	433	};
f36a9737	434
83f2a3aa MD	435	/*
	436	* Ioctl cmd ids
	437	*/
7dc57964 MD	438	#define HAMMERIOC_PRUNE _IOWR('h',1,struct hammer_ioc_prune)
7dc57964 MD	439	#define HAMMERIOC_GETHISTORY _IOWR('h',2,struct hammer_ioc_history)
bf686dbe	440	#define HAMMERIOC_REBLOCK _IOWR('h',3,struct hammer_ioc_reblock)
f36a9737	441	#define HAMMERIOC_SYNCTID _IOWR('h',4,struct hammer_ioc_synctid)
5fa5c92f MD	442	#define HAMMERIOC_SET_PSEUDOFS _IOWR('h',5,struct hammer_ioc_pseudofs_rw)
5fa5c92f MD	443	#define HAMMERIOC_GET_PSEUDOFS _IOWR('h',6,struct hammer_ioc_pseudofs_rw)
dd94f1b1 MD	444	#define HAMMERIOC_MIRROR_READ _IOWR('h',7,struct hammer_ioc_mirror_rw)
dd94f1b1 MD	445	#define HAMMERIOC_MIRROR_WRITE _IOWR('h',8,struct hammer_ioc_mirror_rw)
842e7a70 MD	446	#define HAMMERIOC_UPG_PSEUDOFS _IOWR('h',9,struct hammer_ioc_pseudofs_rw)
	447	#define HAMMERIOC_DGD_PSEUDOFS _IOWR('h',10,struct hammer_ioc_pseudofs_rw)
	448	#define HAMMERIOC_RMR_PSEUDOFS _IOWR('h',11,struct hammer_ioc_pseudofs_rw)
4889cbd4	449	#define HAMMERIOC_WAI_PSEUDOFS _IOWR('h',12,struct hammer_ioc_pseudofs_rw)
44a83111 MD	450	#define HAMMERIOC_GET_VERSION _IOWR('h',13,struct hammer_ioc_version)
44a83111 MD	451	#define HAMMERIOC_SET_VERSION _IOWR('h',14,struct hammer_ioc_version)
797a0b63	452	#define HAMMERIOC_REBALANCE _IOWR('h',15,struct hammer_ioc_rebalance)
b66b9421	453	#define HAMMERIOC_GET_INFO _IOR('h',16,struct hammer_ioc_info)
865c9609	454	#define HAMMERIOC_ADD_VOLUME _IOWR('h',17,struct hammer_ioc_volume)
83f2a3aa MD	455	#define HAMMERIOC_ADD_SNAPSHOT _IOWR('h',18,struct hammer_ioc_snapshot)
	456	#define HAMMERIOC_DEL_SNAPSHOT _IOWR('h',19,struct hammer_ioc_snapshot)
	457	#define HAMMERIOC_GET_SNAPSHOT _IOWR('h',20,struct hammer_ioc_snapshot)
	458	#define HAMMERIOC_GET_CONFIG _IOWR('h',21,struct hammer_ioc_config)
	459	#define HAMMERIOC_SET_CONFIG _IOWR('h',22,struct hammer_ioc_config)
865c9609	460	#define HAMMERIOC_DEL_VOLUME _IOWR('h',24,struct hammer_ioc_volume)
7dc57964 MD	461
7dc57964 MD	462	#endif
5fa5c92f	463