hammer2 - Flesh out span code, API cleanups
[dragonfly.git] / sys / vfs / hammer2 / hammer2.h
CommitLineData
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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>
46558838 57#include <sys/thread.h>
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58#include <sys/globaldata.h>
59#include <sys/lockf.h>
60#include <sys/buf.h>
61#include <sys/queue.h>
62#include <sys/limits.h>
63#include <sys/buf2.h>
64#include <sys/signal2.h>
65#include <sys/tree.h>
66
67#include "hammer2_disk.h"
68#include "hammer2_mount.h"
2910a90c 69#include "hammer2_ioctl.h"
1ad77ed9 70#include "hammer2_ccms.h"
26bf1a36 71#include "hammer2_network.h"
703720e4 72
5c23d7f1 73struct hammer2_chain;
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74struct hammer2_inode;
75struct hammer2_mount;
e4e20f48 76struct hammer2_pfsmount;
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77struct hammer2_state;
78struct hammer2_msg;
703720e4 79
703720e4 80/*
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81 * The chain structure tracks blockref recursions all the way to
82 * the root volume. These consist of indirect blocks, inodes,
83 * and eventually the volume header.
84 *
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85 * The chain structure is embedded in the hammer2_mount, hammer2_inode,
86 * and other system memory structures. The chain structure typically
87 * implements the reference count and busy flag for the larger structure.
88 *
89 * It is always possible to track a chain element all the way back to the
90 * root by following the (parent) links. (index) is a type-dependent index
91 * in the parent indicating where in the parent the chain element resides.
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92 *
93 * When a blockref is added or deleted the related chain element is marked
94 * modified and all of its parents are marked SUBMODIFIED (the parent
95 * recursion can stop once we hit a node that is already marked SUBMODIFIED).
96 * A deleted chain element must remain intact until synchronized against
97 * its parent.
98 *
99 * The blockref at (parent, index) is not adjusted until the modified chain
100 * element is flushed and unmarked. Until then the child's blockref may
101 * not match the blockref at (parent, index).
50e4f8f4 102 */
ecc33e71 103RB_HEAD(hammer2_chain_tree, hammer2_chain);
26bf1a36 104RB_HEAD(hammer2_state_tree, hammer2_state);
a0ed3c24 105TAILQ_HEAD(flush_deferral_list, hammer2_chain);
5c23d7f1 106
50e4f8f4 107struct hammer2_chain {
46558838 108 ccms_cst_t cst; /* attr or data cst */
50e4f8f4 109 struct hammer2_blockref bref;
004f88b4 110 struct hammer2_blockref bref_flush; /* synchronized w/MOVED bit */
26bf1a36 111 struct hammer2_chain *parent; /* return chain to root */
ecc33e71 112 struct hammer2_chain_tree rbhead;
26bf1a36 113 struct hammer2_state *state; /* if active cache msg */
ecc33e71 114 RB_ENTRY(hammer2_chain) rbnode;
1c9f601e 115 TAILQ_ENTRY(hammer2_chain) flush_node; /* flush deferral list */
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116 union {
117 struct hammer2_inode *ip;
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118 struct hammer2_indblock *np;
119 struct hammer2_data *dp;
120 void *mem;
7cfa8da5 121 } u;
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122
123 struct buf *bp; /* buffer cache (ro) */
124 hammer2_media_data_t *data; /* modified copy of data (rw) */
866d5273 125 u_int bytes; /* physical size of data */
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126 int index; /* index in parent */
127 u_int refs;
5c23d7f1 128 u_int flags;
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129};
130
131typedef struct hammer2_chain hammer2_chain_t;
132
5c23d7f1 133int hammer2_chain_cmp(hammer2_chain_t *chain1, hammer2_chain_t *chain2);
ecc33e71 134RB_PROTOTYPE(hammer2_chain_tree, hammer2_chain, rbnode, hammer2_chain_cmp);
5c23d7f1 135
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136/*
137 * MOVED - This bit is set during the flush when the MODIFIED bit is cleared,
138 * indicating that the parent's blocktable must inherit a change to
139 * the bref (typically a block reallocation)
140 *
141 * It must also be set in situations where a chain is not MODIFIED
142 * but whos bref has changed (typically due to fields other than
143 * a block reallocation).
144 */
2910a90c 145#define HAMMER2_CHAIN_MODIFIED 0x00000001 /* active mods */
214f4a77 146#define HAMMER2_CHAIN_DIRTYEMBED 0x00000002 /* inode embedded */
a92f82c4 147#define HAMMER2_CHAIN_DIRTYBP 0x00000004 /* dirty on unlock */
73e441b9 148#define HAMMER2_CHAIN_SUBMODIFIED 0x00000008 /* 1+ subs modified */
b7926f31 149#define HAMMER2_CHAIN_DELETED 0x00000010
01eabad4 150#define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */
c667909f 151#define HAMMER2_CHAIN_FLUSHED 0x00000040 /* flush on unlock */
28ee5f14 152#define HAMMER2_CHAIN_MOVED 0x00000080 /* bref changed */
37aa19df 153#define HAMMER2_CHAIN_IOFLUSH 0x00000100 /* bawrite on put */
1c9f601e 154#define HAMMER2_CHAIN_DEFERRED 0x00000200 /* on a deferral list*/
222d9e22 155#define HAMMER2_CHAIN_DESTROYED 0x00000400 /* destroying */
2910a90c 156#define HAMMER2_CHAIN_MODIFIED_AUX 0x00000800 /* hmp->vchain only */
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157#define HAMMER2_CHAIN_MODIFY_TID 0x00001000 /* mod updates field */
158#define HAMMER2_CHAIN_MOUNTED 0x00002000 /* PFS is mounted */
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159
160/*
161 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next()
162 */
163#define HAMMER2_LOOKUP_NOLOCK 0x00000001 /* ref only */
8cce658d 164#define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */
a0ed3c24 165#define HAMMER2_LOOKUP_SHARED 0x00000100
5c23d7f1 166
50e4f8f4 167/*
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168 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize()
169 *
170 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT
171 * blocks in the INITIAL-create state.
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172 *
173 * NOTE: NO_MODIFY_TID tells the function to not set HAMMER2_CHAIN_MODIFY_TID
174 * when marking the chain modified (used when a sub-chain modification
175 * propagates upward).
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176 */
177#define HAMMER2_MODIFY_NOSUB 0x00000001 /* do not set SUBMOD */
178#define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */
4d5318eb 179#define HAMMER2_MODIFY_NO_MODIFY_TID 0x00000004
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180
181/*
182 * Flags passed to hammer2_chain_lock()
183 */
184#define HAMMER2_RESOLVE_NEVER 1
185#define HAMMER2_RESOLVE_MAYBE 2
186#define HAMMER2_RESOLVE_ALWAYS 3
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187#define HAMMER2_RESOLVE_MASK 0x0F
188
189#define HAMMER2_RESOLVE_SHARED 0x10
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190
191/*
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192 * Cluster different types of storage together for allocations
193 */
194#define HAMMER2_FREECACHE_INODE 0
195#define HAMMER2_FREECACHE_INDIR 1
196#define HAMMER2_FREECACHE_DATA 2
197#define HAMMER2_FREECACHE_UNUSED3 3
198#define HAMMER2_FREECACHE_TYPES 4
199
200/*
201 * BMAP read-ahead maximum parameters
202 */
203#define HAMMER2_BMAP_COUNT 16 /* max bmap read-ahead */
204#define HAMMER2_BMAP_BYTES (HAMMER2_PBUFSIZE * HAMMER2_BMAP_COUNT)
205
206/*
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207 * Misc
208 */
209#define HAMMER2_FLUSH_DEPTH_LIMIT 40 /* stack recursion limit */
210
211/*
5c23d7f1 212 * HAMMER2 IN-MEMORY CACHE OF MEDIA STRUCTURES
7cfa8da5 213 *
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214 * There is an in-memory representation of all on-media data structure.
215 *
216 * When accessed read-only the data will be mapped to the related buffer
217 * cache buffer.
218 *
219 * When accessed read-write (marked modified) a kmalloc()'d copy of the
220 * is created which can then be modified. The copy is destroyed when a
221 * filesystem block is allocated to replace it.
222 *
223 * Active inodes (those with vnodes attached) will maintain the kmalloc()'d
224 * copy for both the read-only and the read-write case. The combination of
225 * (bp) and (data) determines whether (data) was allocated or not.
226 *
227 * The in-memory representation may remain cached (for example in order to
228 * placemark clustering locks) even after the related data has been
229 * detached.
230 */
231
232/*
233 * A hammer2 inode.
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234 *
235 * NOTE: The inode's attribute CST which is also used to lock the inode
236 * is embedded in the chain (chain.cst) and aliased w/ attr_cst.
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237 */
238struct hammer2_inode {
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239 struct hammer2_mount *hmp; /* Global mount */
240 struct hammer2_pfsmount *pmp; /* PFS mount */
e028fa74 241 struct hammer2_inode *pip; /* parent inode */
703720e4 242 struct vnode *vp;
46558838 243 ccms_cst_t topo_cst; /* directory topology cst */
50e4f8f4 244 hammer2_chain_t chain;
5c23d7f1 245 struct hammer2_inode_data ip_data;
37aa19df 246 struct lockf advlock;
99535653 247 u_int depth; /* directory depth */
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248 hammer2_off_t delta_dcount; /* adjust data_count */
249 hammer2_off_t delta_icount; /* adjust inode_count */
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250};
251
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252typedef struct hammer2_inode hammer2_inode_t;
253
703720e4 254/*
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255 * A hammer2 indirect block
256 */
257struct hammer2_indblock {
258 hammer2_chain_t chain;
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259};
260
261typedef struct hammer2_indblock hammer2_indblock_t;
262
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263/*
264 * A hammer2 data block
265 */
266struct hammer2_data {
267 hammer2_chain_t chain;
268};
269
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270typedef struct hammer2_data hammer2_data_t;
271
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272struct hammer2_freecache {
273 hammer2_off_t bulk;
274 hammer2_off_t single;
275};
276
277typedef struct hammer2_freecache hammer2_freecache_t;
278
7cfa8da5 279/*
e4e20f48 280 * Global (per device) mount structure for device (aka vp->v_mount->hmp)
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281 */
282struct hammer2_mount {
50e4f8f4 283 struct vnode *devvp; /* device vnode */
50e4f8f4 284 int ronly; /* read-only mount */
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285 int pmp_count; /* PFS mounts backed by us */
286 TAILQ_ENTRY(hammer2_mount) mntentry; /* hammer2_mntlist */
703720e4 287
5c23d7f1 288 struct malloc_type *minode;
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289 int ninodes;
290 int maxinodes;
703720e4 291
5c23d7f1 292 struct malloc_type *mchain;
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293 int nipstacks;
294 int maxipstacks;
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295 hammer2_chain_t vchain; /* anchor chain */
296 hammer2_chain_t *schain; /* super-root */
01eabad4 297 struct lock alloclk; /* lockmgr lock */
2910a90c 298 struct lock voldatalk; /* lockmgr lock */
703720e4 299
54eb943b 300 hammer2_volume_data_t voldata;
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301 hammer2_freecache_t freecache[HAMMER2_FREECACHE_TYPES]
302 [HAMMER2_MAX_RADIX+1];
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303};
304
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305typedef struct hammer2_mount hammer2_mount_t;
306
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307/*
308 * Per-PFS mount structure for device (aka vp->v_mount)
309 */
310struct hammer2_pfsmount {
311 struct mount *mp; /* kernel mount */
312 struct hammer2_mount *hmp; /* device global mount */
313 hammer2_chain_t *rchain; /* PFS root chain */
314 hammer2_inode_t *iroot; /* PFS root inode */
26bf1a36 315 struct malloc_type *mmsg;
609a8021 316 ccms_domain_t ccms_dom;
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317 struct netexport export; /* nfs export */
318 int ronly; /* read-only mount */
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319 struct file *msg_fp; /* cluster pipe->userland */
320 thread_t msgrd_td; /* cluster thread */
321 thread_t msgwr_td; /* cluster thread */
322 int msg_ctl; /* wakeup flags */
8c280d5d 323 int msg_seq; /* cluster msg sequence id */
9b8b748f 324 uint32_t msgid_iterator;
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325 struct lock msglk; /* lockmgr lock */
326 TAILQ_HEAD(, hammer2_msg) msgq; /* transmit queue */
327 struct hammer2_state *freerd_state; /* allocation cache */
328 struct hammer2_state *freewr_state; /* allocation cache */
329 struct hammer2_state_tree staterd_tree; /* active messages */
330 struct hammer2_state_tree statewr_tree; /* active messages */
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331};
332
333typedef struct hammer2_pfsmount hammer2_pfsmount_t;
334
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335#define HAMMER2_CLUSTERCTL_KILL 0x0001
336
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337/*
338 * In-memory message structure for hammer2.
339 *
340 * Persistent cache state messages will be associated with a hammer2_chain.
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341 *
342 * NOTE! If REPLY is set then the source and target fields in the message
343 * are swapped. That is, source and target remain unchanged whether
344 * the message is a command from side A or a reply from side B.
345 * The message is routed based on target if REPLY is not set, and on
346 * source if REPLY is set.
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347 */
348struct hammer2_state {
349 RB_ENTRY(hammer2_state) rbnode; /* indexed by msgid */
350 struct hammer2_pfsmount *pmp;
351 uint32_t txcmd; /* mostly for CMDF flags */
352 uint32_t rxcmd; /* mostly for CMDF flags */
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353 uint64_t spanid; /* spanning tree routing */
354 uint64_t msgid; /* {spanid,msgid} uniq */
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355 int flags;
356 int error;
357 struct hammer2_chain *chain; /* msg associated w/chain */
358 struct hammer2_msg *msg;
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359 int (*func)(struct hammer2_state *, struct hammer2_msg *);
360 union {
361 void *any;
362 hammer2_pfsmount_t *pmp;
363 } any;
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364};
365
366#define HAMMER2_STATE_INSERTED 0x0001
367#define HAMMER2_STATE_DYNAMIC 0x0002
368
369struct hammer2_msg {
370 TAILQ_ENTRY(hammer2_msg) qentry; /* serialized queue */
371 struct hammer2_state *state;
372 size_t hdr_size;
373 size_t aux_size;
374 char *aux_data;
42e2a62e 375 hammer2_msg_any_t any;
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376};
377
378typedef struct hammer2_state hammer2_state_t;
379typedef struct hammer2_msg hammer2_msg_t;
380
381int hammer2_state_cmp(hammer2_state_t *state1, hammer2_state_t *state2);
382RB_PROTOTYPE(hammer2_state_tree, hammer2_state, rbnode, hammer2_state_cmp);
383
384
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385#if defined(_KERNEL)
386
387MALLOC_DECLARE(M_HAMMER2);
388
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389#define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data)
390#define ITOV(ip) ((ip)->vp)
391
e118c14f 392static __inline
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393hammer2_pfsmount_t *
394MPTOPMP(struct mount *mp)
703720e4 395{
e4e20f48 396 return ((hammer2_pfsmount_t *)mp->mnt_data);
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397}
398
e118c14f 399static __inline
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400hammer2_mount_t *
401MPTOHMP(struct mount *mp)
47902fef 402{
e4e20f48 403 return (((hammer2_pfsmount_t *)mp->mnt_data)->hmp);
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404}
405
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406extern struct vop_ops hammer2_vnode_vops;
407extern struct vop_ops hammer2_spec_vops;
408extern struct vop_ops hammer2_fifo_vops;
409
37aa19df 410extern int hammer2_debug;
01eabad4 411extern int hammer2_cluster_enable;
e708f8b9 412extern int hammer2_hardlink_enable;
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413extern long hammer2_iod_file_read;
414extern long hammer2_iod_meta_read;
415extern long hammer2_iod_indr_read;
416extern long hammer2_iod_file_write;
417extern long hammer2_iod_meta_write;
418extern long hammer2_iod_indr_write;
419extern long hammer2_iod_volu_write;
420extern long hammer2_ioa_file_read;
421extern long hammer2_ioa_meta_read;
422extern long hammer2_ioa_indr_read;
423extern long hammer2_ioa_file_write;
424extern long hammer2_ioa_meta_write;
425extern long hammer2_ioa_indr_write;
426extern long hammer2_ioa_volu_write;
37aa19df 427
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428/*
429 * hammer2_subr.c
430 */
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431void hammer2_inode_lock_ex(hammer2_inode_t *ip);
432void hammer2_inode_unlock_ex(hammer2_inode_t *ip);
9c2e0de0 433void hammer2_inode_lock_sh(hammer2_inode_t *ip);
54eb943b 434void hammer2_inode_unlock_sh(hammer2_inode_t *ip);
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435void hammer2_inode_busy(hammer2_inode_t *ip);
436void hammer2_inode_unbusy(hammer2_inode_t *ip);
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437void hammer2_voldata_lock(hammer2_mount_t *hmp);
438void hammer2_voldata_unlock(hammer2_mount_t *hmp);
e118c14f 439
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440void hammer2_mount_exlock(hammer2_mount_t *hmp);
441void hammer2_mount_shlock(hammer2_mount_t *hmp);
442void hammer2_mount_unlock(hammer2_mount_t *hmp);
703720e4 443
e028fa74 444int hammer2_get_dtype(hammer2_inode_t *ip);
cd4b3d92 445int hammer2_get_vtype(hammer2_inode_t *ip);
37494cab 446u_int8_t hammer2_get_obj_type(enum vtype vtype);
cd4b3d92 447void hammer2_time_to_timespec(u_int64_t xtime, struct timespec *ts);
b2b78aaa 448u_int64_t hammer2_timespec_to_time(struct timespec *ts);
37494cab 449u_int32_t hammer2_to_unix_xid(uuid_t *uuid);
b2b78aaa 450void hammer2_guid_to_uuid(uuid_t *uuid, u_int32_t guid);
e028fa74 451
7cfa8da5 452hammer2_key_t hammer2_dirhash(const unsigned char *name, size_t len);
6ba3b984 453int hammer2_bytes_to_radix(size_t bytes);
7cfa8da5 454
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455int hammer2_calc_logical(hammer2_inode_t *ip, hammer2_off_t uoff,
456 hammer2_key_t *lbasep, hammer2_key_t *leofp);
b2b78aaa 457void hammer2_update_time(uint64_t *timep);
8cce658d 458
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459/*
460 * hammer2_inode.c
461 */
54eb943b 462struct vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp);
ae183399 463
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464void hammer2_inode_lock_nlinks(hammer2_inode_t *ip);
465void hammer2_inode_unlock_nlinks(hammer2_inode_t *ip);
e4e20f48 466hammer2_inode_t *hammer2_inode_alloc(hammer2_pfsmount_t *pmp, void *data);
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467void hammer2_inode_free(hammer2_inode_t *ip);
468void hammer2_inode_ref(hammer2_inode_t *ip);
469void hammer2_inode_drop(hammer2_inode_t *ip);
866d5273 470int hammer2_inode_calc_alloc(hammer2_key_t filesize);
6934ae32 471
e4e20f48 472int hammer2_inode_create(hammer2_inode_t *dip,
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473 struct vattr *vap, struct ucred *cred,
474 const uint8_t *name, size_t name_len,
475 hammer2_inode_t **nipp);
6934ae32 476
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477int hammer2_inode_duplicate(hammer2_inode_t *dip,
478 hammer2_inode_t *oip, hammer2_inode_t **nipp,
479 const uint8_t *name, size_t name_len);
480int hammer2_inode_connect(hammer2_inode_t *dip, hammer2_inode_t *oip,
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481 const uint8_t *name, size_t name_len);
482
ae183399 483int hammer2_unlink_file(hammer2_inode_t *dip,
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484 const uint8_t *name, size_t name_len,
485 int isdir, hammer2_inode_t *retain_ip);
99535653 486int hammer2_hardlink_consolidate(hammer2_inode_t **ipp, hammer2_inode_t *tdip);
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487int hammer2_hardlink_deconsolidate(hammer2_inode_t *dip,
488 hammer2_chain_t **chainp, hammer2_inode_t **ipp);
489int hammer2_hardlink_find(hammer2_inode_t *dip, hammer2_chain_t **chainp,
490 hammer2_inode_t **ipp);
ae183399 491
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492/*
493 * hammer2_chain.c
494 */
2910a90c 495void hammer2_modify_volume(hammer2_mount_t *hmp);
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496hammer2_chain_t *hammer2_chain_alloc(hammer2_mount_t *hmp,
497 hammer2_blockref_t *bref);
498void hammer2_chain_free(hammer2_mount_t *hmp, hammer2_chain_t *chain);
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499void hammer2_chain_ref(hammer2_mount_t *hmp, hammer2_chain_t *chain);
500void hammer2_chain_drop(hammer2_mount_t *hmp, hammer2_chain_t *chain);
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501int hammer2_chain_lock(hammer2_mount_t *hmp, hammer2_chain_t *chain, int how);
502void hammer2_chain_moved(hammer2_mount_t *hmp, hammer2_chain_t *chain);
214f4a77 503void hammer2_chain_modify(hammer2_mount_t *hmp, hammer2_chain_t *chain,
01eabad4 504 int flags);
28ee5f14 505void hammer2_chain_resize(hammer2_inode_t *ip, hammer2_chain_t *chain,
01eabad4 506 int nradix, int flags);
5c23d7f1 507void hammer2_chain_unlock(hammer2_mount_t *hmp, hammer2_chain_t *chain);
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508hammer2_chain_t *hammer2_chain_find(hammer2_mount_t *hmp,
509 hammer2_chain_t *parent, int index);
232a50f9 510hammer2_chain_t *hammer2_chain_get(hammer2_mount_t *hmp,
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511 hammer2_chain_t *parent,
512 int index, int flags);
5c23d7f1 513hammer2_chain_t *hammer2_chain_lookup(hammer2_mount_t *hmp,
e028fa74 514 hammer2_chain_t **parentp,
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515 hammer2_key_t key_beg, hammer2_key_t key_end,
516 int flags);
7cfa8da5 517hammer2_chain_t *hammer2_chain_next(hammer2_mount_t *hmp,
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518 hammer2_chain_t **parentp,
519 hammer2_chain_t *chain,
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520 hammer2_key_t key_beg, hammer2_key_t key_end,
521 int flags);
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522hammer2_chain_t *hammer2_chain_create(hammer2_mount_t *hmp,
523 hammer2_chain_t *parent,
6934ae32 524 hammer2_chain_t *chain,
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525 hammer2_key_t key, int keybits,
526 int type, size_t bytes);
3ac6a319 527void hammer2_chain_delete(hammer2_mount_t *hmp, hammer2_chain_t *parent,
004f88b4 528 hammer2_chain_t *chain, int retain);
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529void hammer2_chain_flush(hammer2_mount_t *hmp, hammer2_chain_t *chain,
530 hammer2_tid_t modify_tid);
b7926f31 531void hammer2_chain_commit(hammer2_mount_t *hmp, hammer2_chain_t *chain);
50e4f8f4 532
df9ea374 533/*
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534 * hammer2_ioctl.c
535 */
536int hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data,
537 int fflag, struct ucred *cred);
538
539/*
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540 * hammer2_msg.c
541 */
542int hammer2_state_msgrx(hammer2_pfsmount_t *pmp, hammer2_msg_t *msg);
543int hammer2_state_msgtx(hammer2_pfsmount_t *pmp, hammer2_msg_t *msg);
544void hammer2_state_cleanuprx(hammer2_pfsmount_t *pmp, hammer2_msg_t *msg);
545void hammer2_state_cleanuptx(hammer2_pfsmount_t *pmp, hammer2_msg_t *msg);
546int hammer2_msg_execute(hammer2_pfsmount_t *pmp, hammer2_msg_t *msg);
547void hammer2_state_free(hammer2_state_t *state);
548void hammer2_msg_free(hammer2_pfsmount_t *pmp, hammer2_msg_t *msg);
8c280d5d 549hammer2_msg_t *hammer2_msg_alloc(hammer2_pfsmount_t *pmp, uint64_t spanid,
9b8b748f 550 uint32_t cmd);
8c280d5d 551void hammer2_msg_write(hammer2_pfsmount_t *pmp,
9b8b748f 552 hammer2_msg_t *msg,
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553 int (*func)(hammer2_state_t *, hammer2_msg_t *),
554 void *data);
555void hammer2_msg_reply(hammer2_pfsmount_t *pmp,
556 hammer2_msg_t *msg, uint32_t error);
557void hammer2_msg_result(hammer2_pfsmount_t *pmp,
558 hammer2_msg_t *msg, uint32_t error);
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559
560/*
561 * hammer2_msgops.c
562 */
8c280d5d 563int hammer2_msg_dbg_rcvmsg(hammer2_pfsmount_t *pmp, hammer2_msg_t *msg);
9b8b748f 564int hammer2_msg_adhoc_input(hammer2_pfsmount_t *pmp, hammer2_msg_t *msg);
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565
566/*
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567 * hammer2_freemap.c
568 */
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569hammer2_off_t hammer2_freemap_alloc(hammer2_mount_t *hmp,
570 int type, size_t bytes);
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571void hammer2_freemap_free(hammer2_mount_t *hmp, hammer2_off_t data_off,
572 int type);
df9ea374 573
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574#endif /* !_KERNEL */
575#endif /* !_VFS_HAMMER2_HAMMER2_H_ */