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[dragonfly.git] / sys / vfs / hammer / hammer.h
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1/*
2 * Copyright (c) 2007 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 *
fe7678ee 34 * $DragonFly: src/sys/vfs/hammer/hammer.h,v 1.25 2008/01/17 05:06:09 dillon Exp $
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35 */
36/*
37 * This header file contains structures used internally by the HAMMERFS
c60bb2c5 38 * implementation. See hammer_disk.h for on-disk structures.
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39 */
40
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41#include <sys/param.h>
42#include <sys/types.h>
43#include <sys/kernel.h>
44#include <sys/systm.h>
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45#include <sys/tree.h>
46#include <sys/malloc.h>
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47#include <sys/mount.h>
48#include <sys/vnode.h>
49#include <sys/globaldata.h>
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50#include <sys/lockf.h>
51#include <sys/buf.h>
8cd0a023 52#include <sys/queue.h>
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53#include <sys/globaldata.h>
54
55#include <sys/buf2.h>
c60bb2c5 56#include "hammer_alist.h"
427e5fc6 57#include "hammer_disk.h"
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58#include "hammer_mount.h"
59
60#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
61
62MALLOC_DECLARE(M_HAMMER);
63
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64struct hammer_mount;
65
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66/*
67 * Key structure used for custom RB tree inode lookups. This prototypes
68 * the function hammer_ino_rb_tree_RB_LOOKUP_INFO(root, info).
69 */
70typedef struct hammer_inode_info {
71 u_int64_t obj_id; /* (key) object identifier */
72 hammer_tid_t obj_asof; /* (key) snapshot transid or 0 */
73} *hammer_inode_info_t;
74
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75/*
76 * HAMMER Transaction tracking
77 */
78struct hammer_transaction {
79 struct hammer_mount *hmp;
80 hammer_tid_t tid;
a89aec1b 81 struct hammer_volume *rootvol;
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82};
83
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84typedef struct hammer_transaction *hammer_transaction_t;
85
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86/*
87 * HAMMER locks
88 */
427e5fc6 89struct hammer_lock {
0b075555 90 int refs; /* active references delay writes */
0b075555 91 int lockcount; /* lock count for exclusive/shared access */
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92 int wanted;
93 struct thread *locktd;
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94};
95
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96static __inline int
97hammer_islocked(struct hammer_lock *lock)
98{
8cd0a023 99 return(lock->lockcount != 0);
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100}
101
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102static __inline int
103hammer_isactive(struct hammer_lock *lock)
104{
105 return(lock->refs != 0);
106}
107
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108static __inline int
109hammer_islastref(struct hammer_lock *lock)
110{
111 return(lock->refs == 1);
112}
c60bb2c5 113
8750964d 114/*
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115 * Structure used to represent an inode in-memory.
116 *
117 * The record and data associated with an inode may be out of sync with
118 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag
119 * clear).
120 *
121 * An inode may also hold a cache of unsynchronized records, used for
122 * database and directories only. Unsynchronized regular file data is
123 * stored in the buffer cache.
124 *
125 * NOTE: A file which is created and destroyed within the initial
126 * synchronization period can wind up not doing any disk I/O at all.
127 *
128 * Finally, an inode may cache numerous disk-referencing B-Tree cursors.
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129 */
130struct hammer_ino_rb_tree;
131struct hammer_inode;
132RB_HEAD(hammer_ino_rb_tree, hammer_inode);
133RB_PROTOTYPEX(hammer_ino_rb_tree, INFO, hammer_inode, rb_node,
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134 hammer_ino_rb_compare, hammer_inode_info_t);
135
136struct hammer_rec_rb_tree;
137struct hammer_record;
138RB_HEAD(hammer_rec_rb_tree, hammer_record);
139RB_PROTOTYPEX(hammer_rec_rb_tree, INFO, hammer_record, rb_node,
140 hammer_rec_rb_compare, hammer_base_elm_t);
141
142TAILQ_HEAD(hammer_node_list, hammer_node);
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143
144struct hammer_inode {
145 RB_ENTRY(hammer_inode) rb_node;
146 u_int64_t obj_id; /* (key) object identifier */
147 hammer_tid_t obj_asof; /* (key) snapshot transid or 0 */
8cd0a023 148 hammer_tid_t last_tid; /* last modified tid (for fsync) */
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149 struct hammer_mount *hmp;
150 int flags;
c60bb2c5 151 struct vnode *vp;
66325755 152 struct lockf advlock;
8cd0a023 153 struct hammer_lock lock;
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154 struct hammer_inode_record ino_rec;
155 struct hammer_inode_data ino_data;
8cd0a023 156 struct hammer_rec_rb_tree rec_tree; /* red-black record tree */
61aeeb33 157 struct hammer_node *cache[2]; /* search initiate cache */
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158};
159
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160typedef struct hammer_inode *hammer_inode_t;
161
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162#define VTOI(vp) ((struct hammer_inode *)(vp)->v_data)
163
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164#define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */
165#define HAMMER_INODE_RDIRTY 0x0002 /* in-memory ino_rec is dirty */
166#define HAMMER_INODE_ITIMES 0x0004 /* in-memory mtime/atime modified */
d113fda1 167#define HAMMER_INODE_XDIRTY 0x0008 /* in-memory records present */
8cd0a023 168#define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */
a89aec1b 169#define HAMMER_INODE_FLUSH 0x0020 /* flush on last ref */
c0ade690 170#define HAMMER_INODE_DELETED 0x0080 /* inode ready for deletion */
76376933 171#define HAMMER_INODE_DELONDISK 0x0100 /* delete synchronized to disk */
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172#define HAMMER_INODE_RO 0x0200 /* read-only (because of as-of) */
173#define HAMMER_INODE_GONE 0x0400 /* delete flushed out */
0a72edae 174#define HAMMER_INODE_DONDISK 0x0800 /* data records may be on disk */
f3b0f382 175#define HAMMER_INODE_BUFS 0x1000 /* dirty high level bps present */
8cd0a023 176
0b075555 177#define HAMMER_INODE_MODMASK (HAMMER_INODE_DDIRTY|HAMMER_INODE_RDIRTY| \
f3b0f382 178 HAMMER_INODE_XDIRTY|HAMMER_INODE_BUFS| \
d113fda1 179 HAMMER_INODE_ITIMES|HAMMER_INODE_DELETED)
0b075555 180
8cd0a023 181#define HAMMER_MAX_INODE_CURSORS 4
66325755 182
8750964d 183/*
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184 * Structure used to represent an unsynchronized record in-memory. This
185 * structure is orgranized in a per-inode RB-tree. If the inode is not
186 * on disk then neither are any records and the in-memory record tree
187 * represents the entire contents of the inode. If the inode is on disk
188 * then the on-disk B-Tree is scanned in parallel with the in-memory
189 * RB-Tree to synthesize the current state of the file.
190 *
191 * Only current (delete_tid == 0) unsynchronized records are kept in-memory.
8750964d 192 */
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193struct hammer_record {
194 RB_ENTRY(hammer_record) rb_node;
a89aec1b 195 struct hammer_lock lock;
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196 struct hammer_inode *ip;
197 union hammer_record_ondisk rec;
198 union hammer_data_ondisk *data;
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199 int flags;
200};
8750964d 201
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202typedef struct hammer_record *hammer_record_t;
203
204#define HAMMER_RECF_ALLOCDATA 0x0001
205#define HAMMER_RECF_ONRBTREE 0x0002
a89aec1b 206#define HAMMER_RECF_DELETED 0x0004
c0ade690 207#define HAMMER_RECF_EMBEDDED_DATA 0x0008
b3deaf57 208#define HAMMER_RECF_SYNCING 0x0010
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209
210/*
211 * Structures used to internally represent a volume and a cluster
212 */
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213struct hammer_volume;
214struct hammer_cluster;
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215struct hammer_supercl;
216struct hammer_buffer;
8cd0a023 217struct hammer_node;
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218RB_HEAD(hammer_vol_rb_tree, hammer_volume);
219RB_HEAD(hammer_clu_rb_tree, hammer_cluster);
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220RB_HEAD(hammer_scl_rb_tree, hammer_supercl);
221RB_HEAD(hammer_buf_rb_tree, hammer_buffer);
8cd0a023 222RB_HEAD(hammer_nod_rb_tree, hammer_node);
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223
224RB_PROTOTYPE2(hammer_vol_rb_tree, hammer_volume, rb_node,
225 hammer_vol_rb_compare, int32_t);
226RB_PROTOTYPE2(hammer_clu_rb_tree, hammer_cluster, rb_node,
227 hammer_clu_rb_compare, int32_t);
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228RB_PROTOTYPE2(hammer_scl_rb_tree, hammer_supercl, rb_node,
229 hammer_scl_rb_compare, int32_t);
230RB_PROTOTYPE2(hammer_buf_rb_tree, hammer_buffer, rb_node,
231 hammer_buf_rb_compare, int32_t);
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232RB_PROTOTYPE2(hammer_nod_rb_tree, hammer_node, rb_node,
233 hammer_nod_rb_compare, int32_t);
8750964d 234
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235/*
236 * IO management - embedded at the head of various in-memory structures
237 */
238enum hammer_io_type { HAMMER_STRUCTURE_VOLUME,
239 HAMMER_STRUCTURE_SUPERCL,
240 HAMMER_STRUCTURE_CLUSTER,
241 HAMMER_STRUCTURE_BUFFER };
242
243union hammer_io_structure;
055f5ff8 244struct hammer_io;
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245
246struct worklist {
247 LIST_ENTRY(worklist) node;
248};
249
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250TAILQ_HEAD(hammer_io_list, hammer_io);
251
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252struct hammer_io {
253 struct worklist worklist;
254 struct hammer_lock lock;
255 enum hammer_io_type type;
256 struct buf *bp;
257 int64_t offset;
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258 TAILQ_ENTRY(hammer_io) entry; /* based on modified flag */
259 struct hammer_io_list *entry_list;
260 struct hammer_io_list deplist;
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261 u_int modified : 1; /* bp's data was modified */
262 u_int released : 1; /* bp released (w/ B_LOCKED set) */
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263 u_int running : 1; /* bp write IO in progress */
264 u_int waiting : 1; /* someone is waiting on us */
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265};
266
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267typedef struct hammer_io *hammer_io_t;
268
66325755 269/*
8cd0a023 270 * In-memory volume representing on-disk buffer
66325755 271 */
8750964d 272struct hammer_volume {
66325755 273 struct hammer_io io;
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274 RB_ENTRY(hammer_volume) rb_node;
275 struct hammer_clu_rb_tree rb_clus_root;
427e5fc6 276 struct hammer_scl_rb_tree rb_scls_root;
8750964d 277 struct hammer_volume_ondisk *ondisk;
427e5fc6 278 struct hammer_alist_live alist;
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279 int32_t vol_no;
280 int32_t vol_clsize;
d26d0ae9 281 int32_t clu_iterator; /* cluster allocation iterator */
fbc6e32a 282 int64_t nblocks; /* note: special calculation for statfs */
8750964d 283 int64_t cluster_base; /* base offset of cluster 0 */
c60bb2c5 284 char *vol_name;
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285 struct vnode *devvp;
286 struct hammer_mount *hmp;
427e5fc6 287 int vol_flags;
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288};
289
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290typedef struct hammer_volume *hammer_volume_t;
291
66325755 292/*
8cd0a023 293 * In-memory super-cluster representing on-disk buffer
66325755 294 */
427e5fc6 295struct hammer_supercl {
66325755 296 struct hammer_io io;
427e5fc6 297 RB_ENTRY(hammer_supercl) rb_node;
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298 struct hammer_supercl_ondisk *ondisk;
299 struct hammer_volume *volume;
300 struct hammer_alist_live alist;
301 int32_t scl_no;
427e5fc6 302};
c60bb2c5 303
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304typedef struct hammer_supercl *hammer_supercl_t;
305
66325755 306/*
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307 * In-memory cluster representing on-disk buffer
308 *
309 * The cluster's indexing range is cached in hammer_cluster, separate
310 * from the ondisk info in order to allow cursors to point to it.
66325755 311 */
8750964d 312struct hammer_cluster {
66325755 313 struct hammer_io io;
8750964d 314 RB_ENTRY(hammer_cluster) rb_node;
427e5fc6 315 struct hammer_buf_rb_tree rb_bufs_root;
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316 struct hammer_cluster_ondisk *ondisk;
317 struct hammer_volume *volume;
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318 struct hammer_alist_live alist_master;
319 struct hammer_alist_live alist_btree;
320 struct hammer_alist_live alist_record;
321 struct hammer_alist_live alist_mdata;
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322 struct hammer_nod_rb_tree rb_nods_root; /* cursors in cluster */
323 struct hammer_base_elm clu_btree_beg; /* copy of on-disk info */
324 struct hammer_base_elm clu_btree_end; /* copy of on-disk info */
8750964d 325 int32_t clu_no;
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326};
327
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328typedef struct hammer_cluster *hammer_cluster_t;
329
66325755 330/*
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331 * In-memory buffer (other then volume, super-cluster, or cluster),
332 * representing an on-disk buffer.
66325755 333 */
427e5fc6 334struct hammer_buffer {
66325755 335 struct hammer_io io;
427e5fc6 336 RB_ENTRY(hammer_buffer) rb_node;
427e5fc6 337 hammer_fsbuf_ondisk_t ondisk;
427e5fc6 338 struct hammer_volume *volume;
8cd0a023 339 struct hammer_cluster *cluster;
427e5fc6 340 int32_t buf_no;
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341 u_int64_t buf_type;
342 struct hammer_alist_live alist;
343 struct hammer_node_list clist;
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344};
345
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346typedef struct hammer_buffer *hammer_buffer_t;
347
348/*
349 * In-memory B-Tree node, representing an on-disk B-Tree node.
350 *
351 * This is a hang-on structure which is backed by a hammer_buffer,
352 * indexed by a hammer_cluster, and used for fine-grained locking of
353 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer
354 * can contain multiple nodes representing wildly disassociated portions
355 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis.
356 *
357 * This structure uses a cluster-relative index to reduce the number
358 * of layers required to access it, and also because all on-disk B-Tree
359 * references are cluster-relative offsets.
360 */
361struct hammer_node {
362 struct hammer_lock lock; /* node-by-node lock */
363 TAILQ_ENTRY(hammer_node) entry; /* per-buffer linkage */
364 RB_ENTRY(hammer_node) rb_node; /* per-cluster linkage */
365 int32_t node_offset; /* cluster-rel offset */
366 struct hammer_cluster *cluster;
367 struct hammer_buffer *buffer; /* backing buffer */
368 hammer_node_ondisk_t ondisk; /* ptr to on-disk structure */
369 struct hammer_node **cache1; /* passive cache(s) */
370 struct hammer_node **cache2;
b3deaf57 371 int flags;
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372};
373
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374#define HAMMER_NODE_DELETED 0x0001
375#define HAMMER_NODE_FLUSH 0x0002
b3deaf57 376
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377typedef struct hammer_node *hammer_node_t;
378
379/*
380 * Common I/O management structure - embedded in in-memory structures
381 * which are backed by filesystem buffers.
382 */
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383union hammer_io_structure {
384 struct hammer_io io;
385 struct hammer_volume volume;
386 struct hammer_supercl supercl;
387 struct hammer_cluster cluster;
388 struct hammer_buffer buffer;
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389};
390
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391typedef union hammer_io_structure *hammer_io_structure_t;
392
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393#define HAMFS_CLUSTER_DIRTY 0x0001
394
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395#include "hammer_cursor.h"
396
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397/*
398 * Internal hammer mount data structure
399 */
400struct hammer_mount {
401 struct mount *mp;
27ea2398 402 /*struct vnode *rootvp;*/
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403 struct hammer_ino_rb_tree rb_inos_root;
404 struct hammer_vol_rb_tree rb_vols_root;
405 struct hammer_volume *rootvol;
406 struct hammer_cluster *rootcl;
d26d0ae9 407 char *zbuf; /* HAMMER_BUFSIZE bytes worth of all-zeros */
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408 int hflags;
409 int ronly;
410 int nvolumes;
d26d0ae9 411 int volume_iterator;
8750964d 412 uuid_t fsid;
66325755 413 udev_t fsid_udev;
7f7c1f84 414 hammer_tid_t asof;
66325755 415 u_int32_t namekey_iterator;
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416};
417
8cd0a023 418typedef struct hammer_mount *hammer_mount_t;
8750964d 419
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420struct hammer_sync_info {
421 int error;
422 int waitfor;
423};
424
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425#endif
426
427#if defined(_KERNEL)
428
429extern struct vop_ops hammer_vnode_vops;
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430extern struct vop_ops hammer_spec_vops;
431extern struct vop_ops hammer_fifo_vops;
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432extern struct hammer_alist_config Buf_alist_config;
433extern struct hammer_alist_config Vol_normal_alist_config;
434extern struct hammer_alist_config Vol_super_alist_config;
435extern struct hammer_alist_config Supercl_alist_config;
436extern struct hammer_alist_config Clu_master_alist_config;
437extern struct hammer_alist_config Clu_slave_alist_config;
66325755 438extern struct bio_ops hammer_bioops;
427e5fc6 439
b3deaf57 440extern int hammer_debug_btree;
d113fda1 441extern int hammer_debug_tid;
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442extern int hammer_count_inodes;
443extern int hammer_count_records;
444extern int hammer_count_record_datas;
445extern int hammer_count_volumes;
446extern int hammer_count_supercls;
447extern int hammer_count_clusters;
448extern int hammer_count_buffers;
449extern int hammer_count_nodes;
450extern int hammer_count_spikes;
451
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452int hammer_vop_inactive(struct vop_inactive_args *);
453int hammer_vop_reclaim(struct vop_reclaim_args *);
7f7c1f84 454int hammer_vfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp);
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455int hammer_get_vnode(struct hammer_inode *ip, int lktype,
456 struct vnode **vpp);
8cd0a023 457struct hammer_inode *hammer_get_inode(hammer_mount_t hmp,
61aeeb33 458 struct hammer_node **cache,
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459 u_int64_t obj_id, hammer_tid_t asof, int flags,
460 int *errorp);
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461void hammer_put_inode(struct hammer_inode *ip);
462void hammer_put_inode_ref(struct hammer_inode *ip);
463
d113fda1 464int hammer_unload_inode(hammer_inode_t ip, void *data);
8cd0a023 465int hammer_unload_volume(hammer_volume_t volume, void *data __unused);
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466int hammer_unload_supercl(hammer_supercl_t supercl, void *data __unused);
467int hammer_unload_cluster(hammer_cluster_t cluster, void *data __unused);
4d75d829 468void hammer_update_syncid(hammer_cluster_t cluster, hammer_tid_t tid);
a89aec1b 469int hammer_unload_buffer(hammer_buffer_t buffer, void *data __unused);
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470int hammer_install_volume(hammer_mount_t hmp, const char *volname);
471
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472int hammer_ip_lookup(hammer_cursor_t cursor, hammer_inode_t ip);
473int hammer_ip_first(hammer_cursor_t cursor, hammer_inode_t ip);
474int hammer_ip_next(hammer_cursor_t cursor);
8cd0a023 475int hammer_ip_resolve_data(hammer_cursor_t cursor);
195c19a1 476int hammer_ip_delete_record(hammer_cursor_t cursor, hammer_tid_t tid);
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477int hammer_ip_check_directory_empty(hammer_transaction_t trans,
478 hammer_inode_t ip);
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479int hammer_sync_hmp(hammer_mount_t hmp, int waitfor);
480int hammer_sync_volume(hammer_volume_t volume, void *data);
481int hammer_sync_cluster(hammer_cluster_t cluster, void *data);
482int hammer_sync_buffer(hammer_buffer_t buffer, void *data);
483
8cd0a023 484hammer_record_t
7f7c1f84 485 hammer_alloc_mem_record(hammer_inode_t ip);
b3deaf57 486void hammer_rel_mem_record(hammer_record_t record);
8cd0a023 487
195c19a1 488int hammer_cursor_up(hammer_cursor_t cursor, int nonblock);
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489int hammer_cursor_toroot(hammer_cursor_t cursor);
490int hammer_cursor_down(hammer_cursor_t cursor);
491
492void hammer_lock_ex(struct hammer_lock *lock);
493int hammer_lock_ex_try(struct hammer_lock *lock);
494void hammer_lock_sh(struct hammer_lock *lock);
427e5fc6 495void hammer_unlock(struct hammer_lock *lock);
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496void hammer_ref(struct hammer_lock *lock);
497void hammer_unref(struct hammer_lock *lock);
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498void hammer_downgrade(struct hammer_lock *lock);
499
66325755 500u_int32_t hammer_to_unix_xid(uuid_t *uuid);
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501void hammer_guid_to_uuid(uuid_t *uuid, u_int32_t guid);
502void hammer_to_timespec(hammer_tid_t tid, struct timespec *ts);
503hammer_tid_t hammer_timespec_to_transid(struct timespec *ts);
a89aec1b 504hammer_tid_t hammer_alloc_tid(hammer_transaction_t trans);
7f7c1f84 505hammer_tid_t hammer_now_tid(void);
d113fda1 506hammer_tid_t hammer_str_to_tid(const char *str);
a89aec1b 507hammer_tid_t hammer_alloc_recid(hammer_transaction_t trans);
8cd0a023 508
66325755 509enum vtype hammer_get_vnode_type(u_int8_t obj_type);
6b4f890b 510int hammer_get_dtype(u_int8_t obj_type);
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511u_int8_t hammer_get_obj_type(enum vtype vtype);
512int64_t hammer_directory_namekey(void *name, int len);
427e5fc6 513
61aeeb33 514int hammer_init_cursor_hmp(hammer_cursor_t cursor, struct hammer_node **cache, hammer_mount_t hmp);
d26d0ae9 515int hammer_init_cursor_cluster(hammer_cursor_t cursor, hammer_cluster_t cluster);
195c19a1 516
8cd0a023 517void hammer_done_cursor(hammer_cursor_t cursor);
6b4f890b 518void hammer_mem_done(hammer_cursor_t cursor);
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519
520int hammer_btree_lookup(hammer_cursor_t cursor);
d26d0ae9 521int hammer_btree_first(hammer_cursor_t cursor);
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522int hammer_btree_extract(hammer_cursor_t cursor, int flags);
523int hammer_btree_iterate(hammer_cursor_t cursor);
524int hammer_btree_insert(hammer_cursor_t cursor, hammer_btree_elm_t elm);
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525int hammer_btree_insert_cluster(hammer_cursor_t cursor,
526 hammer_cluster_t cluster, int32_t rec_offset);
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527int hammer_btree_delete(hammer_cursor_t cursor);
528int hammer_btree_cmp(hammer_base_elm_t key1, hammer_base_elm_t key2);
d26d0ae9 529int hammer_btree_chkts(hammer_tid_t ts, hammer_base_elm_t key);
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530void hammer_make_base_inclusive(hammer_base_elm_t key);
531
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532void hammer_print_btree_node(hammer_node_ondisk_t ondisk);
533void hammer_print_btree_elm(hammer_btree_elm_t elm, u_int8_t type, int i);
8750964d 534
c60bb2c5 535void *hammer_bread(struct hammer_cluster *cluster, int32_t cloff,
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536 u_int64_t buf_type, int *errorp,
537 struct hammer_buffer **bufferp);
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538
539hammer_volume_t hammer_get_root_volume(hammer_mount_t hmp, int *errorp);
540hammer_cluster_t hammer_get_root_cluster(hammer_mount_t hmp, int *errorp);
427e5fc6 541
8cd0a023 542hammer_volume_t hammer_get_volume(hammer_mount_t hmp,
427e5fc6 543 int32_t vol_no, int *errorp);
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544hammer_supercl_t hammer_get_supercl(hammer_volume_t volume, int32_t scl_no,
545 int *errorp, hammer_alloc_state_t isnew);
546hammer_cluster_t hammer_get_cluster(hammer_volume_t volume, int32_t clu_no,
547 int *errorp, hammer_alloc_state_t isnew);
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548hammer_buffer_t hammer_get_buffer(hammer_cluster_t cluster,
549 int32_t buf_no, u_int64_t buf_type, int *errorp);
550
fbc6e32a 551int hammer_ref_volume(hammer_volume_t volume);
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552int hammer_ref_cluster(hammer_cluster_t cluster);
553int hammer_ref_buffer(hammer_buffer_t buffer);
554void hammer_flush_buffer_nodes(hammer_buffer_t buffer);
555
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556void hammer_rel_volume(hammer_volume_t volume, int flush);
557void hammer_rel_supercl(hammer_supercl_t supercl, int flush);
558void hammer_rel_cluster(hammer_cluster_t cluster, int flush);
559void hammer_rel_buffer(hammer_buffer_t buffer, int flush);
560
561hammer_node_t hammer_get_node(hammer_cluster_t cluster,
562 int32_t node_offset, int *errorp);
563int hammer_ref_node(hammer_node_t node);
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564hammer_node_t hammer_ref_node_safe(struct hammer_mount *hmp,
565 struct hammer_node **cache, int *errorp);
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566void hammer_rel_node(hammer_node_t node);
567void hammer_cache_node(hammer_node_t node,
568 struct hammer_node **cache);
569void hammer_uncache_node(struct hammer_node **cache);
570void hammer_flush_node(hammer_node_t node);
571
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572void hammer_dup_buffer(struct hammer_buffer **bufferp,
573 struct hammer_buffer *buffer);
574void hammer_dup_cluster(struct hammer_cluster **clusterp,
575 struct hammer_cluster *cluster);
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576hammer_cluster_t hammer_alloc_cluster(hammer_mount_t hmp,
577 hammer_cluster_t cluster_hint, int *errorp);
578void hammer_init_cluster(hammer_cluster_t cluster,
579 hammer_base_elm_t left_bound,
580 hammer_base_elm_t right_bound);
8cd0a023 581hammer_node_t hammer_alloc_btree(struct hammer_cluster *cluster, int *errorp);
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582void *hammer_alloc_data(struct hammer_cluster *cluster, int32_t bytes,
583 int *errorp, struct hammer_buffer **bufferp);
584void *hammer_alloc_record(struct hammer_cluster *cluster,
585 int *errorp, struct hammer_buffer **bufferp);
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586void hammer_initbuffer(hammer_alist_t live, hammer_fsbuf_head_t head,
587 u_int64_t type);
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588void hammer_free_data_ptr(struct hammer_buffer *buffer,
589 void *data, int bytes);
590void hammer_free_record_ptr(struct hammer_buffer *buffer,
591 union hammer_record_ondisk *rec);
d26d0ae9 592void hammer_free_cluster(hammer_cluster_t cluster);
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593void hammer_free_btree(struct hammer_cluster *cluster, int32_t bclu_offset);
594void hammer_free_data(struct hammer_cluster *cluster, int32_t bclu_offset,
595 int32_t bytes);
596void hammer_free_record(struct hammer_cluster *cluster, int32_t bclu_offset);
597
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598void hammer_put_volume(struct hammer_volume *volume, int flush);
599void hammer_put_supercl(struct hammer_supercl *supercl, int flush);
600void hammer_put_cluster(struct hammer_cluster *cluster, int flush);
601void hammer_put_buffer(struct hammer_buffer *buffer, int flush);
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602
603void hammer_init_alist_config(void);
8750964d 604
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605void hammer_start_transaction(struct hammer_transaction *trans,
606 struct hammer_mount *hmp);
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607void hammer_start_transaction_tid(struct hammer_transaction *trans,
608 struct hammer_mount *hmp, hammer_tid_t tid);
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609void hammer_commit_transaction(struct hammer_transaction *trans);
610void hammer_abort_transaction(struct hammer_transaction *trans);
611
612void hammer_modify_inode(struct hammer_transaction *trans,
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613 hammer_inode_t ip, int flags);
614int hammer_create_inode(struct hammer_transaction *trans, struct vattr *vap,
615 struct ucred *cred, struct hammer_inode *dip,
616 struct hammer_inode **ipp);
a89aec1b 617void hammer_rel_inode(hammer_inode_t ip, int flush);
c0ade690 618int hammer_sync_inode(hammer_inode_t ip, int waitfor, int handle_delete);
8cd0a023 619
a89aec1b 620int hammer_ip_add_directory(struct hammer_transaction *trans,
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621 hammer_inode_t dip, struct namecache *ncp,
622 hammer_inode_t nip);
a89aec1b 623int hammer_ip_del_directory(struct hammer_transaction *trans,
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624 hammer_cursor_t cursor, hammer_inode_t dip,
625 hammer_inode_t ip);
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626int hammer_ip_add_record(struct hammer_transaction *trans,
627 hammer_record_t record);
a89aec1b 628int hammer_ip_delete_range(struct hammer_transaction *trans,
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629 hammer_inode_t ip, int64_t ran_beg, int64_t ran_end,
630 struct hammer_cursor **spikep);
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631int hammer_ip_delete_range_all(struct hammer_transaction *trans,
632 hammer_inode_t ip);
c0ade690 633int hammer_ip_sync_data(struct hammer_transaction *trans,
8cd0a023 634 hammer_inode_t ip, int64_t offset,
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635 void *data, int bytes, struct hammer_cursor **spikep);
636int hammer_ip_sync_record(hammer_record_t rec, struct hammer_cursor **spikep);
637int hammer_write_record(hammer_cursor_t cursor, hammer_record_ondisk_t rec,
638 void *data, int cursor_flags);
639
640void hammer_load_spike(hammer_cursor_t cursor, struct hammer_cursor **spikep);
641int hammer_spike(struct hammer_cursor **spikep);
4d75d829 642int hammer_recover(struct hammer_cluster *cluster);
66325755 643
055f5ff8 644void hammer_io_init(hammer_io_t io, enum hammer_io_type type);
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645int hammer_io_read(struct vnode *devvp, struct hammer_io *io);
646int hammer_io_new(struct vnode *devvp, struct hammer_io *io);
647void hammer_io_release(struct hammer_io *io, int flush);
055f5ff8 648void hammer_io_flush(struct hammer_io *io);
8cd0a023 649int hammer_io_checkflush(hammer_io_t io);
fbc6e32a 650void hammer_io_notify_cluster(hammer_cluster_t cluster);
61aeeb33 651void hammer_io_clear_modify(struct hammer_io *io);
055f5ff8 652void hammer_io_waitdep(struct hammer_io *io);
66325755 653
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654void hammer_modify_volume(hammer_volume_t volume);
655void hammer_modify_supercl(hammer_supercl_t supercl);
656void hammer_modify_cluster(hammer_cluster_t cluster);
657void hammer_modify_buffer(hammer_buffer_t buffer);
0b075555 658
055f5ff8 659#endif
427e5fc6 660
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661static __inline void
662hammer_modify_node(struct hammer_node *node)
663{
fbc6e32a 664 hammer_modify_buffer(node->buffer);
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665}
666
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667/*
668 * Return the cluster-relative byte offset of an element within a buffer
669 */
670static __inline int
671hammer_bclu_offset(struct hammer_buffer *buffer, void *ptr)
672{
673 int bclu_offset;
674
675 bclu_offset = buffer->buf_no * HAMMER_BUFSIZE +
676 ((char *)ptr - (char *)buffer->ondisk);
677 return(bclu_offset);
678}
679