HAMMER 12/many - add VOPs for symlinks, device, and fifo support.
[dragonfly.git] / sys / vfs / hammer / hammer.h
CommitLineData
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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 *
7a04d74f 34 * $DragonFly: src/sys/vfs/hammer/hammer.h,v 1.15 2007/12/30 00:47:22 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 */
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89struct hammer_lock {
90 int refs;
8cd0a023 91 int lockcount;
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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
102static __inline int
103hammer_islastref(struct hammer_lock *lock)
104{
105 return(lock->refs == 1);
106}
c60bb2c5 107
8750964d 108/*
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109 * Structure used to represent an inode in-memory.
110 *
111 * The record and data associated with an inode may be out of sync with
112 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag
113 * clear).
114 *
115 * An inode may also hold a cache of unsynchronized records, used for
116 * database and directories only. Unsynchronized regular file data is
117 * stored in the buffer cache.
118 *
119 * NOTE: A file which is created and destroyed within the initial
120 * synchronization period can wind up not doing any disk I/O at all.
121 *
122 * Finally, an inode may cache numerous disk-referencing B-Tree cursors.
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123 */
124struct hammer_ino_rb_tree;
125struct hammer_inode;
126RB_HEAD(hammer_ino_rb_tree, hammer_inode);
127RB_PROTOTYPEX(hammer_ino_rb_tree, INFO, hammer_inode, rb_node,
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128 hammer_ino_rb_compare, hammer_inode_info_t);
129
130struct hammer_rec_rb_tree;
131struct hammer_record;
132RB_HEAD(hammer_rec_rb_tree, hammer_record);
133RB_PROTOTYPEX(hammer_rec_rb_tree, INFO, hammer_record, rb_node,
134 hammer_rec_rb_compare, hammer_base_elm_t);
135
136TAILQ_HEAD(hammer_node_list, hammer_node);
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137
138struct hammer_inode {
139 RB_ENTRY(hammer_inode) rb_node;
140 u_int64_t obj_id; /* (key) object identifier */
141 hammer_tid_t obj_asof; /* (key) snapshot transid or 0 */
8cd0a023 142 hammer_tid_t last_tid; /* last modified tid (for fsync) */
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143 struct hammer_mount *hmp;
144 int flags;
c60bb2c5 145 struct vnode *vp;
66325755 146 struct lockf advlock;
8cd0a023 147 struct hammer_lock lock;
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148 struct hammer_inode_record ino_rec;
149 struct hammer_inode_data ino_data;
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150 struct hammer_rec_rb_tree rec_tree; /* red-black record tree */
151 struct hammer_node *cache; /* cached B-Tree node shortcut */
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152};
153
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154typedef struct hammer_inode *hammer_inode_t;
155
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156#define VTOI(vp) ((struct hammer_inode *)(vp)->v_data)
157
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158#define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */
159#define HAMMER_INODE_RDIRTY 0x0002 /* in-memory ino_rec is dirty */
160#define HAMMER_INODE_ITIMES 0x0004 /* in-memory mtime/atime modified */
161#define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */
a89aec1b 162#define HAMMER_INODE_FLUSH 0x0020 /* flush on last ref */
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163#define HAMMER_INODE_TID 0x0040 /* update in-memory last_tid */
164#define HAMMER_INODE_DELETED 0x0080 /* inode ready for deletion */
76376933 165#define HAMMER_INODE_DELONDISK 0x0100 /* delete synchronized to disk */
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166
167#define HAMMER_MAX_INODE_CURSORS 4
66325755 168
8750964d 169/*
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170 * Structure used to represent an unsynchronized record in-memory. This
171 * structure is orgranized in a per-inode RB-tree. If the inode is not
172 * on disk then neither are any records and the in-memory record tree
173 * represents the entire contents of the inode. If the inode is on disk
174 * then the on-disk B-Tree is scanned in parallel with the in-memory
175 * RB-Tree to synthesize the current state of the file.
176 *
177 * Only current (delete_tid == 0) unsynchronized records are kept in-memory.
8750964d 178 */
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179struct hammer_record {
180 RB_ENTRY(hammer_record) rb_node;
a89aec1b 181 struct hammer_lock lock;
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182 struct hammer_inode *ip;
183 union hammer_record_ondisk rec;
184 union hammer_data_ondisk *data;
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185 int flags;
186};
8750964d 187
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188typedef struct hammer_record *hammer_record_t;
189
190#define HAMMER_RECF_ALLOCDATA 0x0001
191#define HAMMER_RECF_ONRBTREE 0x0002
a89aec1b 192#define HAMMER_RECF_DELETED 0x0004
c0ade690 193#define HAMMER_RECF_EMBEDDED_DATA 0x0008
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194
195/*
196 * Structures used to internally represent a volume and a cluster
197 */
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198struct hammer_volume;
199struct hammer_cluster;
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200struct hammer_supercl;
201struct hammer_buffer;
8cd0a023 202struct hammer_node;
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203RB_HEAD(hammer_vol_rb_tree, hammer_volume);
204RB_HEAD(hammer_clu_rb_tree, hammer_cluster);
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205RB_HEAD(hammer_scl_rb_tree, hammer_supercl);
206RB_HEAD(hammer_buf_rb_tree, hammer_buffer);
8cd0a023 207RB_HEAD(hammer_nod_rb_tree, hammer_node);
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208
209RB_PROTOTYPE2(hammer_vol_rb_tree, hammer_volume, rb_node,
210 hammer_vol_rb_compare, int32_t);
211RB_PROTOTYPE2(hammer_clu_rb_tree, hammer_cluster, rb_node,
212 hammer_clu_rb_compare, int32_t);
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213RB_PROTOTYPE2(hammer_scl_rb_tree, hammer_supercl, rb_node,
214 hammer_scl_rb_compare, int32_t);
215RB_PROTOTYPE2(hammer_buf_rb_tree, hammer_buffer, rb_node,
216 hammer_buf_rb_compare, int32_t);
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217RB_PROTOTYPE2(hammer_nod_rb_tree, hammer_node, rb_node,
218 hammer_nod_rb_compare, int32_t);
8750964d 219
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220/*
221 * IO management - embedded at the head of various in-memory structures
222 */
223enum hammer_io_type { HAMMER_STRUCTURE_VOLUME,
224 HAMMER_STRUCTURE_SUPERCL,
225 HAMMER_STRUCTURE_CLUSTER,
226 HAMMER_STRUCTURE_BUFFER };
227
228union hammer_io_structure;
229
230struct worklist {
231 LIST_ENTRY(worklist) node;
232};
233
234struct hammer_io {
235 struct worklist worklist;
236 struct hammer_lock lock;
237 enum hammer_io_type type;
238 struct buf *bp;
239 int64_t offset;
240 u_int modified : 1; /* bp's data was modified */
241 u_int released : 1; /* bp released (w/ B_LOCKED set) */
242};
243
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244typedef struct hammer_io *hammer_io_t;
245
66325755 246/*
8cd0a023 247 * In-memory volume representing on-disk buffer
66325755 248 */
8750964d 249struct hammer_volume {
66325755 250 struct hammer_io io;
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251 RB_ENTRY(hammer_volume) rb_node;
252 struct hammer_clu_rb_tree rb_clus_root;
427e5fc6 253 struct hammer_scl_rb_tree rb_scls_root;
8750964d 254 struct hammer_volume_ondisk *ondisk;
427e5fc6 255 struct hammer_alist_live alist;
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256 int32_t vol_no;
257 int32_t vol_clsize;
d26d0ae9 258 int32_t clu_iterator; /* cluster allocation iterator */
fbc6e32a 259 int64_t nblocks; /* note: special calculation for statfs */
8750964d 260 int64_t cluster_base; /* base offset of cluster 0 */
c60bb2c5 261 char *vol_name;
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262 struct vnode *devvp;
263 struct hammer_mount *hmp;
427e5fc6 264 int vol_flags;
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265};
266
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267typedef struct hammer_volume *hammer_volume_t;
268
66325755 269/*
8cd0a023 270 * In-memory super-cluster representing on-disk buffer
66325755 271 */
427e5fc6 272struct hammer_supercl {
66325755 273 struct hammer_io io;
427e5fc6 274 RB_ENTRY(hammer_supercl) rb_node;
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275 struct hammer_supercl_ondisk *ondisk;
276 struct hammer_volume *volume;
277 struct hammer_alist_live alist;
278 int32_t scl_no;
427e5fc6 279};
c60bb2c5 280
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281typedef struct hammer_supercl *hammer_supercl_t;
282
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283enum hammer_cluster_state {
284 HAMMER_CLUSTER_IDLE,
285 HAMMER_CLUSTER_ASYNC,
286 HAMMER_CLUSTER_OPEN
287};
288
66325755 289/*
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290 * In-memory cluster representing on-disk buffer
291 *
292 * The cluster's indexing range is cached in hammer_cluster, separate
293 * from the ondisk info in order to allow cursors to point to it.
66325755 294 */
8750964d 295struct hammer_cluster {
66325755 296 struct hammer_io io;
8750964d 297 RB_ENTRY(hammer_cluster) rb_node;
427e5fc6 298 struct hammer_buf_rb_tree rb_bufs_root;
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299 struct hammer_cluster_ondisk *ondisk;
300 struct hammer_volume *volume;
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301 struct hammer_alist_live alist_master;
302 struct hammer_alist_live alist_btree;
303 struct hammer_alist_live alist_record;
304 struct hammer_alist_live alist_mdata;
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305 struct hammer_nod_rb_tree rb_nods_root; /* cursors in cluster */
306 struct hammer_base_elm clu_btree_beg; /* copy of on-disk info */
307 struct hammer_base_elm clu_btree_end; /* copy of on-disk info */
8750964d 308 int32_t clu_no;
fbc6e32a 309 enum hammer_cluster_state state;
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310};
311
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312typedef struct hammer_cluster *hammer_cluster_t;
313
66325755 314/*
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315 * In-memory buffer (other then volume, super-cluster, or cluster),
316 * representing an on-disk buffer.
66325755 317 */
427e5fc6 318struct hammer_buffer {
66325755 319 struct hammer_io io;
427e5fc6 320 RB_ENTRY(hammer_buffer) rb_node;
427e5fc6 321 hammer_fsbuf_ondisk_t ondisk;
427e5fc6 322 struct hammer_volume *volume;
8cd0a023 323 struct hammer_cluster *cluster;
427e5fc6 324 int32_t buf_no;
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325 u_int64_t buf_type;
326 struct hammer_alist_live alist;
327 struct hammer_node_list clist;
328 struct hammer_node *save_scan;
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329};
330
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331typedef struct hammer_buffer *hammer_buffer_t;
332
333/*
334 * In-memory B-Tree node, representing an on-disk B-Tree node.
335 *
336 * This is a hang-on structure which is backed by a hammer_buffer,
337 * indexed by a hammer_cluster, and used for fine-grained locking of
338 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer
339 * can contain multiple nodes representing wildly disassociated portions
340 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis.
341 *
342 * This structure uses a cluster-relative index to reduce the number
343 * of layers required to access it, and also because all on-disk B-Tree
344 * references are cluster-relative offsets.
345 */
346struct hammer_node {
347 struct hammer_lock lock; /* node-by-node lock */
348 TAILQ_ENTRY(hammer_node) entry; /* per-buffer linkage */
349 RB_ENTRY(hammer_node) rb_node; /* per-cluster linkage */
350 int32_t node_offset; /* cluster-rel offset */
351 struct hammer_cluster *cluster;
352 struct hammer_buffer *buffer; /* backing buffer */
353 hammer_node_ondisk_t ondisk; /* ptr to on-disk structure */
354 struct hammer_node **cache1; /* passive cache(s) */
355 struct hammer_node **cache2;
356};
357
358typedef struct hammer_node *hammer_node_t;
359
360/*
361 * Common I/O management structure - embedded in in-memory structures
362 * which are backed by filesystem buffers.
363 */
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364union hammer_io_structure {
365 struct hammer_io io;
366 struct hammer_volume volume;
367 struct hammer_supercl supercl;
368 struct hammer_cluster cluster;
369 struct hammer_buffer buffer;
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370};
371
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372#define HAMFS_CLUSTER_DIRTY 0x0001
373
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374#include "hammer_cursor.h"
375
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376/*
377 * Internal hammer mount data structure
378 */
379struct hammer_mount {
380 struct mount *mp;
27ea2398 381 /*struct vnode *rootvp;*/
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382 struct hammer_ino_rb_tree rb_inos_root;
383 struct hammer_vol_rb_tree rb_vols_root;
384 struct hammer_volume *rootvol;
385 struct hammer_cluster *rootcl;
d26d0ae9 386 char *zbuf; /* HAMMER_BUFSIZE bytes worth of all-zeros */
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387 int hflags;
388 int ronly;
389 int nvolumes;
d26d0ae9 390 int volume_iterator;
8750964d 391 uuid_t fsid;
66325755 392 udev_t fsid_udev;
7f7c1f84 393 hammer_tid_t asof;
66325755 394 u_int32_t namekey_iterator;
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395};
396
8cd0a023 397typedef struct hammer_mount *hammer_mount_t;
8750964d 398
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399struct hammer_sync_info {
400 int error;
401 int waitfor;
402};
403
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404#endif
405
406#if defined(_KERNEL)
407
408extern struct vop_ops hammer_vnode_vops;
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409extern struct vop_ops hammer_spec_vops;
410extern struct vop_ops hammer_fifo_vops;
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411extern struct hammer_alist_config Buf_alist_config;
412extern struct hammer_alist_config Vol_normal_alist_config;
413extern struct hammer_alist_config Vol_super_alist_config;
414extern struct hammer_alist_config Supercl_alist_config;
415extern struct hammer_alist_config Clu_master_alist_config;
416extern struct hammer_alist_config Clu_slave_alist_config;
66325755 417extern struct bio_ops hammer_bioops;
427e5fc6 418
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419int hammer_vop_inactive(struct vop_inactive_args *);
420int hammer_vop_reclaim(struct vop_reclaim_args *);
7f7c1f84 421int hammer_vfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp);
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422int hammer_get_vnode(struct hammer_inode *ip, int lktype,
423 struct vnode **vpp);
8cd0a023 424struct hammer_inode *hammer_get_inode(hammer_mount_t hmp,
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425 u_int64_t obj_id, hammer_tid_t asof, int *errorp);
426int hammer_update_inode(hammer_inode_t ip);
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427void hammer_put_inode(struct hammer_inode *ip);
428void hammer_put_inode_ref(struct hammer_inode *ip);
429
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430int hammer_unload_inode(hammer_inode_t ip, void *data __unused);
431int hammer_unload_volume(hammer_volume_t volume, void *data __unused);
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432int hammer_unload_supercl(hammer_supercl_t supercl, void *data __unused);
433int hammer_unload_cluster(hammer_cluster_t cluster, void *data __unused);
434int hammer_unload_buffer(hammer_buffer_t buffer, void *data __unused);
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435int hammer_install_volume(hammer_mount_t hmp, const char *volname);
436
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437int hammer_ip_lookup(hammer_cursor_t cursor, hammer_inode_t ip);
438int hammer_ip_first(hammer_cursor_t cursor, hammer_inode_t ip);
439int hammer_ip_next(hammer_cursor_t cursor);
8cd0a023 440int hammer_ip_resolve_data(hammer_cursor_t cursor);
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441int hammer_ip_delete_record(hammer_cursor_t cursor, hammer_tid_t tid);
442
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443int hammer_sync_hmp(hammer_mount_t hmp, int waitfor);
444int hammer_sync_volume(hammer_volume_t volume, void *data);
445int hammer_sync_cluster(hammer_cluster_t cluster, void *data);
446int hammer_sync_buffer(hammer_buffer_t buffer, void *data);
447
8cd0a023 448hammer_record_t
7f7c1f84 449 hammer_alloc_mem_record(hammer_inode_t ip);
a89aec1b 450void hammer_rel_mem_record(struct hammer_record **recordp);
d26d0ae9 451void hammer_drop_mem_record(hammer_record_t record, int delete);
8cd0a023 452
195c19a1 453int hammer_cursor_up(hammer_cursor_t cursor, int nonblock);
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454int hammer_cursor_toroot(hammer_cursor_t cursor);
455int hammer_cursor_down(hammer_cursor_t cursor);
456
457void hammer_lock_ex(struct hammer_lock *lock);
458int hammer_lock_ex_try(struct hammer_lock *lock);
459void hammer_lock_sh(struct hammer_lock *lock);
427e5fc6 460void hammer_unlock(struct hammer_lock *lock);
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461void hammer_ref(struct hammer_lock *lock);
462void hammer_unref(struct hammer_lock *lock);
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463void hammer_downgrade(struct hammer_lock *lock);
464
66325755 465u_int32_t hammer_to_unix_xid(uuid_t *uuid);
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466void hammer_guid_to_uuid(uuid_t *uuid, u_int32_t guid);
467void hammer_to_timespec(hammer_tid_t tid, struct timespec *ts);
468hammer_tid_t hammer_timespec_to_transid(struct timespec *ts);
a89aec1b 469hammer_tid_t hammer_alloc_tid(hammer_transaction_t trans);
7f7c1f84 470hammer_tid_t hammer_now_tid(void);
a89aec1b 471hammer_tid_t hammer_alloc_recid(hammer_transaction_t trans);
8cd0a023 472
66325755 473enum vtype hammer_get_vnode_type(u_int8_t obj_type);
6b4f890b 474int hammer_get_dtype(u_int8_t obj_type);
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475u_int8_t hammer_get_obj_type(enum vtype vtype);
476int64_t hammer_directory_namekey(void *name, int len);
427e5fc6 477
8cd0a023 478int hammer_init_cursor_hmp(hammer_cursor_t cursor, hammer_mount_t hmp);
d26d0ae9 479int hammer_init_cursor_cluster(hammer_cursor_t cursor, hammer_cluster_t cluster);
8cd0a023 480int hammer_init_cursor_ip(hammer_cursor_t cursor, hammer_inode_t ip);
195c19a1 481
8cd0a023 482void hammer_done_cursor(hammer_cursor_t cursor);
6b4f890b 483void hammer_mem_done(hammer_cursor_t cursor);
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484
485int hammer_btree_lookup(hammer_cursor_t cursor);
d26d0ae9 486int hammer_btree_first(hammer_cursor_t cursor);
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487int hammer_btree_extract(hammer_cursor_t cursor, int flags);
488int hammer_btree_iterate(hammer_cursor_t cursor);
489int hammer_btree_insert(hammer_cursor_t cursor, hammer_btree_elm_t elm);
490int hammer_btree_delete(hammer_cursor_t cursor);
491int hammer_btree_cmp(hammer_base_elm_t key1, hammer_base_elm_t key2);
d26d0ae9 492int hammer_btree_chkts(hammer_tid_t ts, hammer_base_elm_t key);
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493void hammer_print_btree_node(hammer_node_ondisk_t ondisk);
494void hammer_print_btree_elm(hammer_btree_elm_t elm, u_int8_t type, int i);
8750964d 495
c60bb2c5 496void *hammer_bread(struct hammer_cluster *cluster, int32_t cloff,
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497 u_int64_t buf_type, int *errorp,
498 struct hammer_buffer **bufferp);
499
500hammer_volume_t hammer_get_root_volume(hammer_mount_t hmp, int *errorp);
501hammer_cluster_t hammer_get_root_cluster(hammer_mount_t hmp, int *errorp);
427e5fc6 502
8cd0a023 503hammer_volume_t hammer_get_volume(hammer_mount_t hmp,
427e5fc6 504 int32_t vol_no, int *errorp);
8cd0a023 505hammer_supercl_t hammer_get_supercl(hammer_volume_t volume,
427e5fc6 506 int32_t scl_no, int *errorp, int isnew);
8cd0a023 507hammer_cluster_t hammer_get_cluster(hammer_volume_t volume,
427e5fc6 508 int32_t clu_no, int *errorp, int isnew);
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509hammer_buffer_t hammer_get_buffer(hammer_cluster_t cluster,
510 int32_t buf_no, u_int64_t buf_type, int *errorp);
511
fbc6e32a 512int hammer_ref_volume(hammer_volume_t volume);
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513int hammer_ref_cluster(hammer_cluster_t cluster);
514int hammer_ref_buffer(hammer_buffer_t buffer);
515void hammer_flush_buffer_nodes(hammer_buffer_t buffer);
516
517
518void hammer_rel_volume(hammer_volume_t volume, int flush);
519void hammer_rel_supercl(hammer_supercl_t supercl, int flush);
520void hammer_rel_cluster(hammer_cluster_t cluster, int flush);
521void hammer_rel_buffer(hammer_buffer_t buffer, int flush);
522
523hammer_node_t hammer_get_node(hammer_cluster_t cluster,
524 int32_t node_offset, int *errorp);
525int hammer_ref_node(hammer_node_t node);
526void hammer_rel_node(hammer_node_t node);
527void hammer_cache_node(hammer_node_t node,
528 struct hammer_node **cache);
529void hammer_uncache_node(struct hammer_node **cache);
530void hammer_flush_node(hammer_node_t node);
531
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532void hammer_dup_buffer(struct hammer_buffer **bufferp,
533 struct hammer_buffer *buffer);
534void hammer_dup_cluster(struct hammer_cluster **clusterp,
535 struct hammer_cluster *cluster);
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536hammer_cluster_t hammer_alloc_cluster(hammer_mount_t hmp,
537 hammer_cluster_t cluster_hint, int *errorp);
538void hammer_init_cluster(hammer_cluster_t cluster,
539 hammer_base_elm_t left_bound,
540 hammer_base_elm_t right_bound);
8cd0a023 541hammer_node_t hammer_alloc_btree(struct hammer_cluster *cluster, int *errorp);
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542void *hammer_alloc_data(struct hammer_cluster *cluster, int32_t bytes,
543 int *errorp, struct hammer_buffer **bufferp);
544void *hammer_alloc_record(struct hammer_cluster *cluster,
545 int *errorp, struct hammer_buffer **bufferp);
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546void hammer_free_data_ptr(struct hammer_buffer *buffer,
547 void *data, int bytes);
548void hammer_free_record_ptr(struct hammer_buffer *buffer,
549 union hammer_record_ondisk *rec);
d26d0ae9 550void hammer_free_cluster(hammer_cluster_t cluster);
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551void hammer_free_btree(struct hammer_cluster *cluster, int32_t bclu_offset);
552void hammer_free_data(struct hammer_cluster *cluster, int32_t bclu_offset,
553 int32_t bytes);
554void hammer_free_record(struct hammer_cluster *cluster, int32_t bclu_offset);
555
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556void hammer_put_volume(struct hammer_volume *volume, int flush);
557void hammer_put_supercl(struct hammer_supercl *supercl, int flush);
558void hammer_put_cluster(struct hammer_cluster *cluster, int flush);
559void hammer_put_buffer(struct hammer_buffer *buffer, int flush);
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560
561void hammer_init_alist_config(void);
8750964d 562
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563void hammer_start_transaction(struct hammer_transaction *trans,
564 struct hammer_mount *hmp);
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565void hammer_commit_transaction(struct hammer_transaction *trans);
566void hammer_abort_transaction(struct hammer_transaction *trans);
567
568void hammer_modify_inode(struct hammer_transaction *trans,
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569 hammer_inode_t ip, int flags);
570int hammer_create_inode(struct hammer_transaction *trans, struct vattr *vap,
571 struct ucred *cred, struct hammer_inode *dip,
572 struct hammer_inode **ipp);
a89aec1b 573void hammer_rel_inode(hammer_inode_t ip, int flush);
c0ade690 574int hammer_sync_inode(hammer_inode_t ip, int waitfor, int handle_delete);
8cd0a023 575
a89aec1b 576int hammer_ip_add_directory(struct hammer_transaction *trans,
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577 hammer_inode_t dip, struct namecache *ncp,
578 hammer_inode_t nip);
a89aec1b 579int hammer_ip_del_directory(struct hammer_transaction *trans,
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580 hammer_cursor_t cursor, hammer_inode_t dip,
581 hammer_inode_t ip);
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582int hammer_ip_add_record(struct hammer_transaction *trans,
583 hammer_record_t record);
a89aec1b 584int hammer_ip_delete_range(struct hammer_transaction *trans,
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585 hammer_inode_t ip, int64_t ran_beg, int64_t ran_end,
586 struct hammer_cursor **spikep);
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587int hammer_ip_delete_range_all(struct hammer_transaction *trans,
588 hammer_inode_t ip);
c0ade690 589int hammer_ip_sync_data(struct hammer_transaction *trans,
8cd0a023 590 hammer_inode_t ip, int64_t offset,
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591 void *data, int bytes, struct hammer_cursor **spikep);
592int hammer_ip_sync_record(hammer_record_t rec, struct hammer_cursor **spikep);
593int hammer_write_record(hammer_cursor_t cursor, hammer_record_ondisk_t rec,
594 void *data, int cursor_flags);
595
596void hammer_load_spike(hammer_cursor_t cursor, struct hammer_cursor **spikep);
597int hammer_spike(struct hammer_cursor **spikep);
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598
599int hammer_io_read(struct vnode *devvp, struct hammer_io *io);
600int hammer_io_new(struct vnode *devvp, struct hammer_io *io);
601void hammer_io_release(struct hammer_io *io, int flush);
8cd0a023 602int hammer_io_checkflush(hammer_io_t io);
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603void hammer_io_notify_cluster(hammer_cluster_t cluster);
604void hammer_io_flush(struct hammer_io *io, struct hammer_sync_info *info);
66325755 605
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606#endif
607
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608/*
609 * Inline support functions (not kernel specific)
610 */
611static __inline void
612hammer_modify_volume(struct hammer_volume *volume)
613{
66325755 614 volume->io.modified = 1;
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615}
616
617static __inline void
618hammer_modify_supercl(struct hammer_supercl *supercl)
619{
66325755 620 supercl->io.modified = 1;
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621}
622
623static __inline void
624hammer_modify_cluster(struct hammer_cluster *cluster)
625{
66325755 626 cluster->io.modified = 1;
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627}
628
629static __inline void
630hammer_modify_buffer(struct hammer_buffer *buffer)
631{
fbc6e32a 632 hammer_io_notify_cluster(buffer->cluster);
66325755 633 buffer->io.modified = 1;
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634}
635
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636static __inline void
637hammer_modify_node(struct hammer_node *node)
638{
fbc6e32a 639 hammer_modify_buffer(node->buffer);
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640}
641
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642/*
643 * Return the cluster-relative byte offset of an element within a buffer
644 */
645static __inline int
646hammer_bclu_offset(struct hammer_buffer *buffer, void *ptr)
647{
648 int bclu_offset;
649
650 bclu_offset = buffer->buf_no * HAMMER_BUFSIZE +
651 ((char *)ptr - (char *)buffer->ondisk);
652 return(bclu_offset);
653}
654