[dragonfly.git] / sys / vfs / hammer2 / hammer2.h

/*
 * Copyright (c) 2011-2012 The DragonFly Project.  All rights reserved.
 *
 * This code is derived from software contributed to The DragonFly Project
 * by Matthew Dillon <dillon@dragonflybsd.org>
 * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org>
 *
 * 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.
 */

/*
 * This header file contains structures used internally by the HAMMER2
 * implementation.  See hammer2_disk.h for on-disk structures.
 */

#ifndef _VFS_HAMMER2_HAMMER2_H_
#define _VFS_HAMMER2_HAMMER2_H_

#include <sys/param.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/systm.h>
#include <sys/tree.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <sys/proc.h>
#include <sys/mountctl.h>
#include <sys/priv.h>
#include <sys/stat.h>
#include <sys/globaldata.h>
#include <sys/lockf.h>
#include <sys/buf.h>
#include <sys/queue.h>
#include <sys/limits.h>
#include <sys/buf2.h>
#include <sys/signal2.h>
#include <sys/tree.h>

#include "hammer2_disk.h"
#include "hammer2_mount.h"

struct hammer2_chain;
struct hammer2_inode;
struct hammer2_mount;

/*
 * The chain structure tracks blockref recursions all the way to
 * the root volume.  These consist of indirect blocks, inodes,
 * and eventually the volume header.
 *
 * The chain structure is embedded in the hammer2_mount, hammer2_inode,
 * and other system memory structures.  The chain structure typically
 * implements the reference count and busy flag for the larger structure.
 *
 * It is always possible to track a chain element all the way back to the
 * root by following the (parent) links.  (index) is a type-dependent index
 * in the parent indicating where in the parent the chain element resides.
 *
 * When a blockref is added or deleted the related chain element is marked
 * modified and all of its parents are marked SUBMODIFIED (the parent
 * recursion can stop once we hit a node that is already marked SUBMODIFIED).
 * A deleted chain element must remain intact until synchronized against
 * its parent.
 *
 * The blockref at (parent, index) is not adjusted until the modified chain
 * element is flushed and unmarked.  Until then the child's blockref may
 * not match the blockref at (parent, index).
 */
SPLAY_HEAD(hammer2_chain_splay, hammer2_chain);

struct hammer2_chain {
	struct hammer2_blockref	bref;
	struct hammer2_chain *parent;	/* return chain to root */
	struct hammer2_chain_splay shead;
	SPLAY_ENTRY(hammer2_chain) snode;
	union {
		struct hammer2_inode *ip;
		struct hammer2_indblock *np;
		struct hammer2_data *dp;
		void *mem;
	} u;

	struct buf	*bp;		/* buffer cache (ro) */
	hammer2_media_data_t *data;	/* modified copy of data (rw) */

	struct lock	lk;		/* lockmgr lock */
	int		index;		/* index in parent */
	u_int		refs;
	u_int		busy;		/* soft-busy */
	u_int		flags;
};

typedef struct hammer2_chain hammer2_chain_t;

int hammer2_chain_cmp(hammer2_chain_t *chain1, hammer2_chain_t *chain2);
SPLAY_PROTOTYPE(hammer2_chain_splay, hammer2_chain, snode, hammer2_chain_cmp);

#define HAMMER2_CHAIN_MODIFIED		0x00000001	/* this elm modified */
#define HAMMER2_CHAIN_COMMITTING	0x00000002	/* mods committing */
#define HAMMER2_CHAIN_SUBMODIFIED	0x00000004	/* 1+ subs modified */
#define HAMMER2_CHAIN_SUBCOMMITTING	0x00000008	/* 1+ subs committing */
#define HAMMER2_CHAIN_DELETED		0x00000010
#define HAMMER2_CHAIN_INITIAL		0x00000020	/* initial write */
#define HAMMER2_CHAIN_FLUSHED		0x00000040	/* flush on unlock */
#define HAMMER2_CHAIN_MOVED		0x00000080	/* moved */
#define HAMMER2_CHAIN_IOFLUSH		0x00000100	/* bawrite on put */

/*
 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next()
 */
#define HAMMER2_LOOKUP_NOLOCK		0x00000001	/* ref only */

/*
 * HAMMER2 IN-MEMORY CACHE OF MEDIA STRUCTURES
 *
 * There is an in-memory representation of all on-media data structure.
 *
 * When accessed read-only the data will be mapped to the related buffer
 * cache buffer.
 *
 * When accessed read-write (marked modified) a kmalloc()'d copy of the
 * is created which can then be modified.  The copy is destroyed when a
 * filesystem block is allocated to replace it.
 *
 * Active inodes (those with vnodes attached) will maintain the kmalloc()'d
 * copy for both the read-only and the read-write case.  The combination of
 * (bp) and (data) determines whether (data) was allocated or not.
 *
 * The in-memory representation may remain cached (for example in order to
 * placemark clustering locks) even after the related data has been
 * detached.
 */

/*
 * A hammer2 inode.
 */
struct hammer2_inode {
	struct hammer2_mount	*hmp;
	struct hammer2_inode	*pip;		/* parent inode */
	struct vnode		*vp;
	hammer2_chain_t		chain;
	struct hammer2_inode_data ip_data;
	struct lockf		advlock;
};

typedef struct hammer2_inode hammer2_inode_t;

/*
 * A hammer2 indirect block
 */
struct hammer2_indblock {
	hammer2_chain_t		chain;
};

typedef struct hammer2_indblock hammer2_indblock_t;

#define np_data		chain.data->npdata

/*
 * A hammer2 data block
 */
struct hammer2_data {
	hammer2_chain_t		chain;
};

#define dp_data		chain.data->buf

typedef struct hammer2_data hammer2_data_t;

/*
 * Governing mount structure for filesystem (aka vp->v_mount)
 */
struct hammer2_mount {
	struct mount	*mp;		/* kernel mount */
	struct vnode	*devvp;		/* device vnode */
	struct netexport export;	/* nfs export */
	int		ronly;		/* read-only mount */

	struct malloc_type *minode;
	int 		ninodes;
	int 		maxinodes;

	struct malloc_type *mchain;
	int		nipstacks;
	int		maxipstacks;
	hammer2_chain_t vchain;		/* anchor chain */
	hammer2_chain_t *schain;	/* super-root */
	hammer2_chain_t *rchain;	/* label-root */
	struct hammer2_inode *iroot;

	hammer2_volume_data_t voldata;
	hammer2_off_t	freecache[HAMMER2_MAX_RADIX];
};

typedef struct hammer2_mount hammer2_mount_t;

#if defined(_KERNEL)

MALLOC_DECLARE(M_HAMMER2);

static __inline
struct mount *
H2TOMP(struct hammer2_mount *hmp)
{
	return (struct mount *) hmp->mp;
}

#define VTOI(vp)	((hammer2_inode_t *)(vp)->v_data)
#define ITOV(ip)	((ip)->vp)

static __inline
struct hammer2_mount *
MPTOH2(struct mount *mp)
{
	return (hammer2_mount_t *) mp->mnt_data;
}

extern struct vop_ops hammer2_vnode_vops;
extern struct vop_ops hammer2_spec_vops;
extern struct vop_ops hammer2_fifo_vops;

extern int hammer2_debug;

/*
 * hammer2_subr.c
 */
void hammer2_inode_lock_ex(hammer2_inode_t *ip);
void hammer2_inode_unlock_ex(hammer2_inode_t *ip);
void hammer2_inode_lock_sh(hammer2_inode_t *ip);
void hammer2_inode_unlock_sh(hammer2_inode_t *ip);
void hammer2_inode_busy(hammer2_inode_t *ip);
void hammer2_inode_unbusy(hammer2_inode_t *ip);

void hammer2_mount_exlock(hammer2_mount_t *hmp);
void hammer2_mount_shlock(hammer2_mount_t *hmp);
void hammer2_mount_unlock(hammer2_mount_t *hmp);

int hammer2_get_dtype(hammer2_inode_t *ip);
int hammer2_get_vtype(hammer2_inode_t *ip);
u_int8_t hammer2_get_obj_type(enum vtype vtype);
void hammer2_time_to_timespec(u_int64_t xtime, struct timespec *ts);
u_int32_t hammer2_to_unix_xid(uuid_t *uuid);

hammer2_key_t hammer2_dirhash(const unsigned char *name, size_t len);

/*
 * hammer2_inode.c
 */
struct vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp);
hammer2_inode_t *hammer2_inode_alloc(hammer2_mount_t *hmp, void *data);
void hammer2_inode_free(hammer2_inode_t *ip);
void hammer2_inode_ref(hammer2_inode_t *ip);
void hammer2_inode_drop(hammer2_inode_t *ip);
int hammer2_create_inode(hammer2_mount_t *hmp,
			 struct vattr *vap, struct ucred *cred,
			 hammer2_inode_t *dip,
			 const uint8_t *name, size_t name_len,
			 hammer2_inode_t **nipp);

/*
 * hammer2_chain.c
 */
hammer2_chain_t *hammer2_chain_alloc(hammer2_mount_t *hmp,
				hammer2_blockref_t *bref);
void hammer2_chain_free(hammer2_mount_t *hmp, hammer2_chain_t *chain);
void hammer2_chain_ref(hammer2_mount_t *hmp, hammer2_chain_t *chain);
void hammer2_chain_drop(hammer2_mount_t *hmp, hammer2_chain_t *chain);
int hammer2_chain_lock(hammer2_mount_t *hmp, hammer2_chain_t *chain);
void hammer2_chain_modify(hammer2_mount_t *hmp, hammer2_chain_t *chain);
void hammer2_chain_unlock(hammer2_mount_t *hmp, hammer2_chain_t *chain);
hammer2_chain_t *hammer2_chain_find(hammer2_mount_t *hmp,
				hammer2_chain_t *parent, int index);
hammer2_chain_t *hammer2_chain_get(hammer2_mount_t *hmp,
				hammer2_chain_t *parent,
				int index, int flags);
void hammer2_chain_put(hammer2_mount_t *hmp, hammer2_chain_t *chain);
hammer2_chain_t *hammer2_chain_lookup(hammer2_mount_t *hmp,
				hammer2_chain_t **parentp,
				hammer2_key_t key_beg, hammer2_key_t key_end,
				int flags);
hammer2_chain_t *hammer2_chain_next(hammer2_mount_t *hmp,
				hammer2_chain_t **parentp,
				hammer2_chain_t *chain,
				hammer2_key_t key_beg, hammer2_key_t key_end,
				int flags);
hammer2_chain_t *hammer2_chain_create(hammer2_mount_t *hmp,
				hammer2_chain_t *parent,
				hammer2_key_t key, int keybits,
				int type, size_t bytes);
void hammer2_chain_delete(hammer2_mount_t *hmp, hammer2_chain_t **parentp,
				hammer2_chain_t *chain);
void hammer2_chain_flush(hammer2_mount_t *hmp, hammer2_chain_t *chain,
				hammer2_blockref_t *parent_bref);
void hammer2_chain_commit(hammer2_mount_t *hmp, hammer2_chain_t *chain);

/*
 * hammer2_freemap.c
 */
hammer2_off_t hammer2_freemap_alloc(hammer2_mount_t *hmp, size_t bytes);
int hammer2_freemap_bytes_to_radix(size_t bytes);

#endif /* !_KERNEL */
#endif /* !_VFS_HAMMER2_HAMMER2_H_ */
Commit	Line	Data
703720e4 MD	1	/*
	2	* Copyright (c) 2011-2012 The DragonFly Project. All rights reserved.
	3	*
	4	* This code is derived from software contributed to The DragonFly Project
	5	* by Matthew Dillon <dillon@dragonflybsd.org>
	6	* by Venkatesh Srinivas <vsrinivas@dragonflybsd.org>
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	*
	12	* 1. Redistributions of source code must retain the above copyright
	13	* notice, this list of conditions and the following disclaimer.
	14	* 2. Redistributions in binary form must reproduce the above copyright
	15	* notice, this list of conditions and the following disclaimer in
	16	* the documentation and/or other materials provided with the
	17	* distribution.
	18	* 3. Neither the name of The DragonFly Project nor the names of its
	19	* contributors may be used to endorse or promote products derived
	20	* from this software without specific, prior written permission.
	21	*
	22	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	23	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	24	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
	25	* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	26	* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
	27	* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
	28	* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	29	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
	30	* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	31	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	32	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	33	* SUCH DAMAGE.
	34	*/
	35
	36	/*
	37	* This header file contains structures used internally by the HAMMER2
	38	* implementation. See hammer2_disk.h for on-disk structures.
	39	*/
	40
	41	#ifndef _VFS_HAMMER2_HAMMER2_H_
	42	#define _VFS_HAMMER2_HAMMER2_H_
	43
	44	#include <sys/param.h>
	45	#include <sys/types.h>
	46	#include <sys/kernel.h>
	47	#include <sys/conf.h>
	48	#include <sys/systm.h>
	49	#include <sys/tree.h>
	50	#include <sys/malloc.h>
	51	#include <sys/mount.h>
	52	#include <sys/vnode.h>
	53	#include <sys/proc.h>
	54	#include <sys/mountctl.h>
	55	#include <sys/priv.h>
	56	#include <sys/stat.h>
	57	#include <sys/globaldata.h>
	58	#include <sys/lockf.h>
	59	#include <sys/buf.h>
	60	#include <sys/queue.h>
	61	#include <sys/limits.h>
	62	#include <sys/buf2.h>
	63	#include <sys/signal2.h>
	64	#include <sys/tree.h>
65
66	#include "hammer2_disk.h"
67	#include "hammer2_mount.h"
68
5c23d7f1	69	struct hammer2_chain;
703720e4 MD	70	struct hammer2_inode;
	71	struct hammer2_mount;
	72
703720e4	73	/*
50e4f8f4 MD	74	* The chain structure tracks blockref recursions all the way to
	75	* the root volume. These consist of indirect blocks, inodes,
	76	* and eventually the volume header.
	77	*
7cfa8da5 MD	78	* The chain structure is embedded in the hammer2_mount, hammer2_inode,
	79	* and other system memory structures. The chain structure typically
	80	* implements the reference count and busy flag for the larger structure.
	81	*
	82	* It is always possible to track a chain element all the way back to the
	83	* root by following the (parent) links. (index) is a type-dependent index
	84	* in the parent indicating where in the parent the chain element resides.
5c23d7f1 MD	85	*
	86	* When a blockref is added or deleted the related chain element is marked
	87	* modified and all of its parents are marked SUBMODIFIED (the parent
	88	* recursion can stop once we hit a node that is already marked SUBMODIFIED).
	89	* A deleted chain element must remain intact until synchronized against
	90	* its parent.
	91	*
	92	* The blockref at (parent, index) is not adjusted until the modified chain
	93	* element is flushed and unmarked. Until then the child's blockref may
	94	* not match the blockref at (parent, index).
50e4f8f4	95	*/
5c23d7f1 MD	96	SPLAY_HEAD(hammer2_chain_splay, hammer2_chain);
5c23d7f1 MD	97
50e4f8f4 MD	98	struct hammer2_chain {
50e4f8f4 MD	99	struct hammer2_blockref bref;
7cfa8da5	100	struct hammer2_chain parent; / return chain to root */
5c23d7f1 MD	101	struct hammer2_chain_splay shead;
5c23d7f1 MD	102	SPLAY_ENTRY(hammer2_chain) snode;
7cfa8da5 MD	103	union {
7cfa8da5 MD	104	struct hammer2_inode *ip;
5c23d7f1 MD	105	struct hammer2_indblock *np;
	106	struct hammer2_data *dp;
	107	void *mem;
7cfa8da5	108	} u;
5c23d7f1 MD	109
	110	struct buf bp; / buffer cache (ro) */
	111	hammer2_media_data_t data; / modified copy of data (rw) */
	112
	113	struct lock lk; /* lockmgr lock */
	114	int index; /* index in parent */
	115	u_int refs;
	116	u_int busy; /* soft-busy */
	117	u_int flags;
50e4f8f4 MD	118	};
	119
	120	typedef struct hammer2_chain hammer2_chain_t;
	121
5c23d7f1 MD	122	int hammer2_chain_cmp(hammer2_chain_t chain1, hammer2_chain_t chain2);
	123	SPLAY_PROTOTYPE(hammer2_chain_splay, hammer2_chain, snode, hammer2_chain_cmp);
	124
	125	#define HAMMER2_CHAIN_MODIFIED 0x00000001 /* this elm modified */
b7926f31 MD	126	#define HAMMER2_CHAIN_COMMITTING 0x00000002 /* mods committing */
	127	#define HAMMER2_CHAIN_SUBMODIFIED 0x00000004 /* 1+ subs modified */
	128	#define HAMMER2_CHAIN_SUBCOMMITTING 0x00000008 /* 1+ subs committing */
	129	#define HAMMER2_CHAIN_DELETED 0x00000010
	130	#define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial write */
c667909f	131	#define HAMMER2_CHAIN_FLUSHED 0x00000040 /* flush on unlock */
995e78dc	132	#define HAMMER2_CHAIN_MOVED 0x00000080 /* moved */
37aa19df	133	#define HAMMER2_CHAIN_IOFLUSH 0x00000100 /* bawrite on put */
c667909f MD	134
	135	/*
	136	* Flags passed to hammer2_chain_lookup() and hammer2_chain_next()
	137	*/
	138	#define HAMMER2_LOOKUP_NOLOCK 0x00000001 /* ref only */
5c23d7f1	139
50e4f8f4	140	/*
5c23d7f1	141	* HAMMER2 IN-MEMORY CACHE OF MEDIA STRUCTURES
7cfa8da5	142	*
5c23d7f1 MD	143	* There is an in-memory representation of all on-media data structure.
	144	*
	145	* When accessed read-only the data will be mapped to the related buffer
	146	* cache buffer.
	147	*
	148	* When accessed read-write (marked modified) a kmalloc()'d copy of the
	149	* is created which can then be modified. The copy is destroyed when a
	150	* filesystem block is allocated to replace it.
	151	*
	152	* Active inodes (those with vnodes attached) will maintain the kmalloc()'d
	153	* copy for both the read-only and the read-write case. The combination of
	154	* (bp) and (data) determines whether (data) was allocated or not.
	155	*
	156	* The in-memory representation may remain cached (for example in order to
	157	* placemark clustering locks) even after the related data has been
	158	* detached.
	159	*/
	160
	161	/*
	162	* A hammer2 inode.
703720e4 MD	163	*/
703720e4 MD	164	struct hammer2_inode {
54eb943b	165	struct hammer2_mount *hmp;
e028fa74	166	struct hammer2_inode pip; / parent inode */
703720e4	167	struct vnode *vp;
50e4f8f4	168	hammer2_chain_t chain;
5c23d7f1	169	struct hammer2_inode_data ip_data;
37aa19df	170	struct lockf advlock;
703720e4 MD	171	};
703720e4 MD	172
54eb943b MD	173	typedef struct hammer2_inode hammer2_inode_t;
54eb943b MD	174
703720e4	175	/*
7cfa8da5 MD	176	* A hammer2 indirect block
	177	*/
	178	struct hammer2_indblock {
	179	hammer2_chain_t chain;
7cfa8da5 MD	180	};
	181
	182	typedef struct hammer2_indblock hammer2_indblock_t;
	183
5c23d7f1 MD	184	#define np_data chain.data->npdata
	185
	186	/*
	187	* A hammer2 data block
	188	*/
	189	struct hammer2_data {
	190	hammer2_chain_t chain;
	191	};
	192
	193	#define dp_data chain.data->buf
	194
	195	typedef struct hammer2_data hammer2_data_t;
	196
7cfa8da5	197	/*
703720e4 MD	198	* Governing mount structure for filesystem (aka vp->v_mount)
	199	*/
	200	struct hammer2_mount {
50e4f8f4 MD	201	struct mount mp; / kernel mount */
50e4f8f4 MD	202	struct vnode devvp; / device vnode */
50e4f8f4 MD	203	struct netexport export; /* nfs export */
50e4f8f4 MD	204	int ronly; /* read-only mount */
703720e4	205
5c23d7f1	206	struct malloc_type *minode;
54eb943b MD	207	int ninodes;
54eb943b MD	208	int maxinodes;
703720e4	209
5c23d7f1	210	struct malloc_type *mchain;
54eb943b MD	211	int nipstacks;
54eb943b MD	212	int maxipstacks;
7cfa8da5 MD	213	hammer2_chain_t vchain; /* anchor chain */
	214	hammer2_chain_t schain; / super-root */
	215	hammer2_chain_t rchain; / label-root */
	216	struct hammer2_inode *iroot;
703720e4	217
54eb943b	218	hammer2_volume_data_t voldata;
df9ea374	219	hammer2_off_t freecache[HAMMER2_MAX_RADIX];
703720e4 MD	220	};
703720e4 MD	221
54eb943b MD	222	typedef struct hammer2_mount hammer2_mount_t;
54eb943b MD	223
703720e4 MD	224	#if defined(_KERNEL)
	225
	226	MALLOC_DECLARE(M_HAMMER2);
	227
e118c14f MD	228	static __inline
e118c14f MD	229	struct mount *
703720e4 MD	230	H2TOMP(struct hammer2_mount *hmp)
703720e4 MD	231	{
54eb943b	232	return (struct mount *) hmp->mp;
703720e4 MD	233	}
703720e4 MD	234
54eb943b	235	#define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data)
703720e4 MD	236	#define ITOV(ip) ((ip)->vp)
703720e4 MD	237
e118c14f MD	238	static __inline
e118c14f MD	239	struct hammer2_mount *
47902fef VS	240	MPTOH2(struct mount *mp)
47902fef VS	241	{
54eb943b	242	return (hammer2_mount_t *) mp->mnt_data;
47902fef VS	243	}
47902fef VS	244
703720e4 MD	245	extern struct vop_ops hammer2_vnode_vops;
	246	extern struct vop_ops hammer2_spec_vops;
	247	extern struct vop_ops hammer2_fifo_vops;
	248
37aa19df MD	249	extern int hammer2_debug;
37aa19df MD	250
7cfa8da5 MD	251	/*
	252	* hammer2_subr.c
	253	*/
54eb943b MD	254	void hammer2_inode_lock_ex(hammer2_inode_t *ip);
54eb943b MD	255	void hammer2_inode_unlock_ex(hammer2_inode_t *ip);
9c2e0de0	256	void hammer2_inode_lock_sh(hammer2_inode_t *ip);
54eb943b	257	void hammer2_inode_unlock_sh(hammer2_inode_t *ip);
9c2e0de0 MD	258	void hammer2_inode_busy(hammer2_inode_t *ip);
9c2e0de0 MD	259	void hammer2_inode_unbusy(hammer2_inode_t *ip);
e118c14f	260
54eb943b MD	261	void hammer2_mount_exlock(hammer2_mount_t *hmp);
	262	void hammer2_mount_shlock(hammer2_mount_t *hmp);
	263	void hammer2_mount_unlock(hammer2_mount_t *hmp);
703720e4	264
e028fa74	265	int hammer2_get_dtype(hammer2_inode_t *ip);
cd4b3d92	266	int hammer2_get_vtype(hammer2_inode_t *ip);
37494cab	267	u_int8_t hammer2_get_obj_type(enum vtype vtype);
cd4b3d92	268	void hammer2_time_to_timespec(u_int64_t xtime, struct timespec *ts);
37494cab	269	u_int32_t hammer2_to_unix_xid(uuid_t *uuid);
e028fa74	270
7cfa8da5 MD	271	hammer2_key_t hammer2_dirhash(const unsigned char *name, size_t len);
	272
	273	/*
	274	* hammer2_inode.c
	275	*/
54eb943b	276	struct vnode hammer2_igetv(hammer2_inode_t ip, int *errorp);
232a50f9	277	hammer2_inode_t hammer2_inode_alloc(hammer2_mount_t hmp, void *data);
7cfa8da5 MD	278	void hammer2_inode_free(hammer2_inode_t *ip);
	279	void hammer2_inode_ref(hammer2_inode_t *ip);
	280	void hammer2_inode_drop(hammer2_inode_t *ip);
37494cab MD	281	int hammer2_create_inode(hammer2_mount_t *hmp,
	282	struct vattr vap, struct ucred cred,
	283	hammer2_inode_t *dip,
	284	const uint8_t *name, size_t name_len,
	285	hammer2_inode_t **nipp);
703720e4	286
7cfa8da5 MD	287	/*
	288	* hammer2_chain.c
	289	*/
5c23d7f1 MD	290	hammer2_chain_t hammer2_chain_alloc(hammer2_mount_t hmp,
	291	hammer2_blockref_t *bref);
	292	void hammer2_chain_free(hammer2_mount_t hmp, hammer2_chain_t chain);
7cfa8da5 MD	293	void hammer2_chain_ref(hammer2_mount_t hmp, hammer2_chain_t chain);
7cfa8da5 MD	294	void hammer2_chain_drop(hammer2_mount_t hmp, hammer2_chain_t chain);
5c23d7f1 MD	295	int hammer2_chain_lock(hammer2_mount_t hmp, hammer2_chain_t chain);
	296	void hammer2_chain_modify(hammer2_mount_t hmp, hammer2_chain_t chain);
	297	void hammer2_chain_unlock(hammer2_mount_t hmp, hammer2_chain_t chain);
b7926f31 MD	298	hammer2_chain_t hammer2_chain_find(hammer2_mount_t hmp,
b7926f31 MD	299	hammer2_chain_t *parent, int index);
232a50f9	300	hammer2_chain_t hammer2_chain_get(hammer2_mount_t hmp,
c667909f MD	301	hammer2_chain_t *parent,
c667909f MD	302	int index, int flags);
232a50f9	303	void hammer2_chain_put(hammer2_mount_t hmp, hammer2_chain_t chain);
5c23d7f1	304	hammer2_chain_t hammer2_chain_lookup(hammer2_mount_t hmp,
e028fa74	305	hammer2_chain_t **parentp,
c667909f MD	306	hammer2_key_t key_beg, hammer2_key_t key_end,
c667909f MD	307	int flags);
7cfa8da5	308	hammer2_chain_t hammer2_chain_next(hammer2_mount_t hmp,
5c23d7f1 MD	309	hammer2_chain_t **parentp,
5c23d7f1 MD	310	hammer2_chain_t *chain,
c667909f MD	311	hammer2_key_t key_beg, hammer2_key_t key_end,
c667909f MD	312	int flags);
5c23d7f1 MD	313	hammer2_chain_t hammer2_chain_create(hammer2_mount_t hmp,
	314	hammer2_chain_t *parent,
	315	hammer2_key_t key, int keybits,
	316	int type, size_t bytes);
	317	void hammer2_chain_delete(hammer2_mount_t hmp, hammer2_chain_t *parentp,
	318	hammer2_chain_t *chain);
b7926f31 MD	319	void hammer2_chain_flush(hammer2_mount_t hmp, hammer2_chain_t chain,
	320	hammer2_blockref_t *parent_bref);
	321	void hammer2_chain_commit(hammer2_mount_t hmp, hammer2_chain_t chain);
50e4f8f4	322
df9ea374 MD	323	/*
	324	* hammer2_freemap.c
	325	*/
5c23d7f1	326	hammer2_off_t hammer2_freemap_alloc(hammer2_mount_t *hmp, size_t bytes);
c667909f	327	int hammer2_freemap_bytes_to_radix(size_t bytes);
df9ea374	328
47902fef VS	329	#endif /* !_KERNEL */
47902fef VS	330	#endif /* !_VFS_HAMMER2_HAMMER2_H_ */