HAMMER 38D/Many: Undo/Synchronization and crash recovery
[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 *
f90dde4c 34 * $DragonFly: src/sys/vfs/hammer/hammer.h,v 1.50 2008/04/26 02:54:00 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>
42c7d26b 44#include <sys/conf.h>
427e5fc6 45#include <sys/systm.h>
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46#include <sys/tree.h>
47#include <sys/malloc.h>
427e5fc6 48#include <sys/mount.h>
513ca7d7 49#include <sys/mountctl.h>
427e5fc6 50#include <sys/vnode.h>
42c7d26b 51#include <sys/proc.h>
427e5fc6 52#include <sys/globaldata.h>
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53#include <sys/lockf.h>
54#include <sys/buf.h>
8cd0a023 55#include <sys/queue.h>
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56#include <sys/globaldata.h>
57
58#include <sys/buf2.h>
855942b6 59#include <sys/signal2.h>
427e5fc6 60#include "hammer_disk.h"
8750964d 61#include "hammer_mount.h"
7dc57964 62#include "hammer_ioctl.h"
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63
64#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
65
66MALLOC_DECLARE(M_HAMMER);
67
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68struct hammer_mount;
69
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70/*
71 * Key structure used for custom RB tree inode lookups. This prototypes
72 * the function hammer_ino_rb_tree_RB_LOOKUP_INFO(root, info).
73 */
74typedef struct hammer_inode_info {
513ca7d7 75 int64_t obj_id; /* (key) object identifier */
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76 hammer_tid_t obj_asof; /* (key) snapshot transid or 0 */
77} *hammer_inode_info_t;
78
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79typedef enum hammer_transaction_type {
80 HAMMER_TRANS_RO,
81 HAMMER_TRANS_STD,
82 HAMMER_TRANS_FLS
83} hammer_transaction_type_t;
84
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85/*
86 * HAMMER Transaction tracking
87 */
88struct hammer_transaction {
b84de5af 89 hammer_transaction_type_t type;
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90 struct hammer_mount *hmp;
91 hammer_tid_t tid;
b84de5af 92 hammer_tid_t time;
a89aec1b 93 struct hammer_volume *rootvol;
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94};
95
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96typedef struct hammer_transaction *hammer_transaction_t;
97
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98/*
99 * HAMMER locks
100 */
427e5fc6 101struct hammer_lock {
0b075555 102 int refs; /* active references delay writes */
0b075555 103 int lockcount; /* lock count for exclusive/shared access */
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104 int wanted;
105 struct thread *locktd;
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106};
107
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108static __inline int
109hammer_islocked(struct hammer_lock *lock)
110{
8cd0a023 111 return(lock->lockcount != 0);
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112}
113
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114static __inline int
115hammer_isactive(struct hammer_lock *lock)
116{
117 return(lock->refs != 0);
118}
119
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120static __inline int
121hammer_islastref(struct hammer_lock *lock)
122{
123 return(lock->refs == 1);
124}
c60bb2c5 125
6a37e7e4 126/*
7aa3b8a6 127 * Return if we specifically own the lock exclusively.
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128 */
129static __inline int
7aa3b8a6 130hammer_lock_excl_owned(struct hammer_lock *lock, thread_t td)
6a37e7e4 131{
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132 if (lock->lockcount > 0 && lock->locktd == td)
133 return(1);
134 return(0);
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135}
136
8750964d 137/*
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138 * Structure used to represent an inode in-memory.
139 *
140 * The record and data associated with an inode may be out of sync with
141 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag
142 * clear).
143 *
144 * An inode may also hold a cache of unsynchronized records, used for
145 * database and directories only. Unsynchronized regular file data is
146 * stored in the buffer cache.
147 *
148 * NOTE: A file which is created and destroyed within the initial
149 * synchronization period can wind up not doing any disk I/O at all.
150 *
151 * Finally, an inode may cache numerous disk-referencing B-Tree cursors.
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152 */
153struct hammer_ino_rb_tree;
154struct hammer_inode;
155RB_HEAD(hammer_ino_rb_tree, hammer_inode);
156RB_PROTOTYPEX(hammer_ino_rb_tree, INFO, hammer_inode, rb_node,
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157 hammer_ino_rb_compare, hammer_inode_info_t);
158
159struct hammer_rec_rb_tree;
160struct hammer_record;
161RB_HEAD(hammer_rec_rb_tree, hammer_record);
162RB_PROTOTYPEX(hammer_rec_rb_tree, INFO, hammer_record, rb_node,
163 hammer_rec_rb_compare, hammer_base_elm_t);
164
165TAILQ_HEAD(hammer_node_list, hammer_node);
8750964d 166
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167typedef enum hammer_inode_state {
168 HAMMER_FST_IDLE,
169 HAMMER_FST_SETUP,
170 HAMMER_FST_FLUSH
171} hammer_inode_state_t;
172
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173struct hammer_inode {
174 RB_ENTRY(hammer_inode) rb_node;
b84de5af 175 hammer_inode_state_t flush_state;
059819e3 176 TAILQ_ENTRY(hammer_inode) flush_entry;
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177 u_int64_t obj_id; /* (key) object identifier */
178 hammer_tid_t obj_asof; /* (key) snapshot or 0 */
179 struct hammer_mount *hmp;
180 int flags;
181 int error; /* flush error */
182 int cursor_ip_refs; /* sanity */
183 struct vnode *vp;
184 struct lockf advlock;
185 struct hammer_lock lock; /* sync copy interlock */
186 TAILQ_HEAD(, bio) bio_list; /* BIOs to flush out */
187 TAILQ_HEAD(, bio) bio_alt_list; /* BIOs to flush out */
188 off_t trunc_off;
189 struct hammer_inode_record ino_rec; /* in-memory cache */
190 struct hammer_inode_data ino_data; /* in-memory cache */
191 struct hammer_rec_rb_tree rec_tree; /* in-memory cache */
61aeeb33 192 struct hammer_node *cache[2]; /* search initiate cache */
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193
194 /*
195 * When a demark is created to synchronize an inode to
196 * disk, certain fields are copied so the front-end VOPs
197 * can continue to run in parallel with the synchronization
198 * occuring in the background.
199 */
200 int sync_flags; /* to-sync flags cache */
201 off_t sync_trunc_off; /* to-sync truncation */
202 struct hammer_inode_record sync_ino_rec;/* to-sync cache */
203 struct hammer_inode_data sync_ino_data; /* to-sync cache */
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204};
205
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206typedef struct hammer_inode *hammer_inode_t;
207
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208#define VTOI(vp) ((struct hammer_inode *)(vp)->v_data)
209
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210#define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */
211#define HAMMER_INODE_RDIRTY 0x0002 /* in-memory ino_rec is dirty */
212#define HAMMER_INODE_ITIMES 0x0004 /* in-memory mtime/atime modified */
059819e3 213#define HAMMER_INODE_XDIRTY 0x0008 /* in-memory records/flsbufs present */
8cd0a023 214#define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */
a89aec1b 215#define HAMMER_INODE_FLUSH 0x0020 /* flush on last ref */
c0ade690 216#define HAMMER_INODE_DELETED 0x0080 /* inode ready for deletion */
76376933 217#define HAMMER_INODE_DELONDISK 0x0100 /* delete synchronized to disk */
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218#define HAMMER_INODE_RO 0x0200 /* read-only (because of as-of) */
219#define HAMMER_INODE_GONE 0x0400 /* delete flushed out */
0a72edae 220#define HAMMER_INODE_DONDISK 0x0800 /* data records may be on disk */
f3b0f382 221#define HAMMER_INODE_BUFS 0x1000 /* dirty high level bps present */
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222#define HAMMER_INODE_REFLUSH 0x2000 /* pipelined flush during flush */
223#define HAMMER_INODE_UNUSED4000 0x4000
059819e3 224#define HAMMER_INODE_FLUSHW 0x8000 /* Someone waiting for flush */
8cd0a023 225
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226#define HAMMER_INODE_TRUNCATED 0x00010000
227
0b075555 228#define HAMMER_INODE_MODMASK (HAMMER_INODE_DDIRTY|HAMMER_INODE_RDIRTY| \
f3b0f382 229 HAMMER_INODE_XDIRTY|HAMMER_INODE_BUFS| \
b84de5af 230 HAMMER_INODE_ITIMES|HAMMER_INODE_TRUNCATED)
0b075555 231
8cd0a023 232#define HAMMER_MAX_INODE_CURSORS 4
66325755 233
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234#define HAMMER_FLUSH_SIGNAL 0x0001
235#define HAMMER_FLUSH_FORCE 0x0002
236
8750964d 237/*
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238 * Structure used to represent an unsynchronized record in-memory. This
239 * structure is orgranized in a per-inode RB-tree. If the inode is not
240 * on disk then neither are any records and the in-memory record tree
241 * represents the entire contents of the inode. If the inode is on disk
242 * then the on-disk B-Tree is scanned in parallel with the in-memory
243 * RB-Tree to synthesize the current state of the file.
244 *
245 * Only current (delete_tid == 0) unsynchronized records are kept in-memory.
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246 *
247 * blocked is the count of the number of cursors (ip_first/ip_next) blocked
248 * on the record waiting for a synchronization to complete.
8750964d 249 */
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250struct hammer_record {
251 RB_ENTRY(hammer_record) rb_node;
b84de5af 252 hammer_inode_state_t state;
a89aec1b 253 struct hammer_lock lock;
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254 struct hammer_inode *ip;
255 union hammer_record_ondisk rec;
256 union hammer_data_ondisk *data;
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257 int flags;
258};
8750964d 259
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260typedef struct hammer_record *hammer_record_t;
261
262#define HAMMER_RECF_ALLOCDATA 0x0001
263#define HAMMER_RECF_ONRBTREE 0x0002
b84de5af 264#define HAMMER_RECF_DELETED_FE 0x0004 /* deleted (frontend) */
40043e7f 265#define HAMMER_RECF_INBAND 0x0008
b84de5af 266#define HAMMER_RECF_DELETED_BE 0x0010 /* deleted (backend) */
b33e2cc0 267#define HAMMER_RECF_WANTED 0x0020
b84de5af 268#define HAMMER_RECF_DELETE_ONDISK 0x0040
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269
270/*
47197d71 271 * In-memory structures representing on-disk structures.
8cd0a023 272 */
8750964d 273struct hammer_volume;
427e5fc6 274struct hammer_buffer;
8cd0a023 275struct hammer_node;
8750964d 276RB_HEAD(hammer_vol_rb_tree, hammer_volume);
427e5fc6 277RB_HEAD(hammer_buf_rb_tree, hammer_buffer);
8cd0a023 278RB_HEAD(hammer_nod_rb_tree, hammer_node);
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279
280RB_PROTOTYPE2(hammer_vol_rb_tree, hammer_volume, rb_node,
281 hammer_vol_rb_compare, int32_t);
427e5fc6 282RB_PROTOTYPE2(hammer_buf_rb_tree, hammer_buffer, rb_node,
47197d71 283 hammer_buf_rb_compare, hammer_off_t);
8cd0a023 284RB_PROTOTYPE2(hammer_nod_rb_tree, hammer_node, rb_node,
47197d71 285 hammer_nod_rb_compare, hammer_off_t);
8750964d 286
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287/*
288 * IO management - embedded at the head of various in-memory structures
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289 *
290 * VOLUME - hammer_volume containing meta-data
291 * META_BUFFER - hammer_buffer containing meta-data
292 * DATA_BUFFER - hammer_buffer containing pure-data
293 *
294 * Dirty volume headers and dirty meta-data buffers are locked until the
295 * flusher can sequence them out. Dirty pure-data buffers can be written.
296 * Clean buffers can be passively released.
66325755 297 */
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298typedef enum hammer_io_type {
299 HAMMER_STRUCTURE_VOLUME,
300 HAMMER_STRUCTURE_META_BUFFER,
301 HAMMER_STRUCTURE_UNDO_BUFFER,
302 HAMMER_STRUCTURE_DATA_BUFFER
303} hammer_io_type_t;
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304
305union hammer_io_structure;
055f5ff8 306struct hammer_io;
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307
308struct worklist {
309 LIST_ENTRY(worklist) node;
310};
311
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312TAILQ_HEAD(hammer_io_list, hammer_io);
313typedef struct hammer_io_list *hammer_io_list_t;
055f5ff8 314
66325755 315struct hammer_io {
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316 struct worklist worklist;
317 struct hammer_lock lock;
318 enum hammer_io_type type;
319 struct hammer_mount *hmp;
320 TAILQ_ENTRY(hammer_io) mod_entry; /* list entry if modified */
321 hammer_io_list_t mod_list;
322 struct buf *bp;
323 int64_t offset;
324 int loading; /* loading/unloading interlock */
325 int modify_refs;
326
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327 u_int modified : 1; /* bp's data was modified */
328 u_int released : 1; /* bp released (w/ B_LOCKED set) */
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329 u_int running : 1; /* bp write IO in progress */
330 u_int waiting : 1; /* someone is waiting on us */
b33e2cc0 331 u_int validated : 1; /* ondisk has been validated */
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332 u_int flush : 1; /* flush on last release */
333 u_int waitdep : 1; /* flush waits for dependancies */
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334};
335
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336typedef struct hammer_io *hammer_io_t;
337
66325755 338/*
8cd0a023 339 * In-memory volume representing on-disk buffer
66325755 340 */
8750964d 341struct hammer_volume {
66325755 342 struct hammer_io io;
8750964d 343 RB_ENTRY(hammer_volume) rb_node;
47197d71 344 struct hammer_buf_rb_tree rb_bufs_root;
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345 struct hammer_volume_ondisk *ondisk;
346 int32_t vol_no;
fbc6e32a 347 int64_t nblocks; /* note: special calculation for statfs */
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348 int64_t buffer_base; /* base offset of buffer 0 */
349 hammer_off_t maxbuf_off; /* Maximum buffer offset */
c60bb2c5 350 char *vol_name;
8750964d 351 struct vnode *devvp;
427e5fc6 352 int vol_flags;
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353};
354
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355typedef struct hammer_volume *hammer_volume_t;
356
66325755 357/*
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358 * In-memory buffer (other then volume, super-cluster, or cluster),
359 * representing an on-disk buffer.
66325755 360 */
427e5fc6 361struct hammer_buffer {
66325755 362 struct hammer_io io;
427e5fc6 363 RB_ENTRY(hammer_buffer) rb_node;
47197d71 364 void *ondisk;
427e5fc6 365 struct hammer_volume *volume;
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366 hammer_off_t zone2_offset;
367 hammer_off_t zoneX_offset;
8cd0a023 368 struct hammer_node_list clist;
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369};
370
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371typedef struct hammer_buffer *hammer_buffer_t;
372
373/*
374 * In-memory B-Tree node, representing an on-disk B-Tree node.
375 *
376 * This is a hang-on structure which is backed by a hammer_buffer,
377 * indexed by a hammer_cluster, and used for fine-grained locking of
378 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer
379 * can contain multiple nodes representing wildly disassociated portions
380 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis.
381 *
382 * This structure uses a cluster-relative index to reduce the number
383 * of layers required to access it, and also because all on-disk B-Tree
384 * references are cluster-relative offsets.
385 */
386struct hammer_node {
387 struct hammer_lock lock; /* node-by-node lock */
388 TAILQ_ENTRY(hammer_node) entry; /* per-buffer linkage */
389 RB_ENTRY(hammer_node) rb_node; /* per-cluster linkage */
47197d71 390 hammer_off_t node_offset; /* full offset spec */
40043e7f 391 struct hammer_mount *hmp;
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392 struct hammer_buffer *buffer; /* backing buffer */
393 hammer_node_ondisk_t ondisk; /* ptr to on-disk structure */
394 struct hammer_node **cache1; /* passive cache(s) */
395 struct hammer_node **cache2;
b3deaf57 396 int flags;
740d8317 397 int loading; /* load interlock */
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398};
399
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400#define HAMMER_NODE_DELETED 0x0001
401#define HAMMER_NODE_FLUSH 0x0002
b3deaf57 402
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403typedef struct hammer_node *hammer_node_t;
404
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405/*
406 * List of locked nodes.
407 */
408struct hammer_node_locklist {
409 struct hammer_node_locklist *next;
410 hammer_node_t node;
411};
412
413typedef struct hammer_node_locklist *hammer_node_locklist_t;
414
415
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416/*
417 * Common I/O management structure - embedded in in-memory structures
418 * which are backed by filesystem buffers.
419 */
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420union hammer_io_structure {
421 struct hammer_io io;
422 struct hammer_volume volume;
66325755 423 struct hammer_buffer buffer;
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424};
425
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426typedef union hammer_io_structure *hammer_io_structure_t;
427
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428/*
429 * Allocation holes are recorded for a short period of time in an attempt
430 * to use up the space.
431 */
432
433#define HAMMER_MAX_HOLES 8
434
435struct hammer_hole;
436
437struct hammer_holes {
438 TAILQ_HEAD(, hammer_hole) list;
439 int count;
440};
441
442typedef struct hammer_holes *hammer_holes_t;
443
444struct hammer_hole {
445 TAILQ_ENTRY(hammer_hole) entry;
446 hammer_off_t offset;
447 int bytes;
448};
449
450typedef struct hammer_hole *hammer_hole_t;
427e5fc6 451
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452#include "hammer_cursor.h"
453
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454/*
455 * Internal hammer mount data structure
456 */
457struct hammer_mount {
458 struct mount *mp;
27ea2398 459 /*struct vnode *rootvp;*/
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460 struct hammer_ino_rb_tree rb_inos_root;
461 struct hammer_vol_rb_tree rb_vols_root;
40043e7f 462 struct hammer_nod_rb_tree rb_nods_root;
8750964d 463 struct hammer_volume *rootvol;
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464 struct hammer_base_elm root_btree_beg;
465 struct hammer_base_elm root_btree_end;
d26d0ae9 466 char *zbuf; /* HAMMER_BUFSIZE bytes worth of all-zeros */
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467 int hflags;
468 int ronly;
469 int nvolumes;
d26d0ae9 470 int volume_iterator;
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471 int flusher_seq;
472 int flusher_act;
473 int flusher_exiting;
f90dde4c 474 int reclaim_count;
059819e3 475 thread_t flusher_td;
855942b6 476 u_int check_interrupt;
8750964d 477 uuid_t fsid;
66325755 478 udev_t fsid_udev;
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479 struct hammer_io_list volu_list; /* dirty undo buffers */
480 struct hammer_io_list undo_list; /* dirty undo buffers */
481 struct hammer_io_list data_list; /* dirty data buffers */
482 struct hammer_io_list meta_list; /* dirty meta bufs */
483 struct hammer_io_list lose_list; /* loose buffers */
484 int locked_dirty_count; /* meta/volu count */
f90dde4c 485 int io_running_count;
7f7c1f84 486 hammer_tid_t asof;
b84de5af 487 hammer_off_t next_tid;
66325755 488 u_int32_t namekey_iterator;
f03c9cf4 489 hammer_off_t zone_limits[HAMMER_MAX_ZONES];
513ca7d7 490 struct netexport export;
40043e7f 491 struct lock blockmap_lock;
bf686dbe 492 struct hammer_holes holes[HAMMER_MAX_ZONES];
059819e3 493 TAILQ_HEAD(, hammer_inode) flush_list;
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494};
495
8cd0a023 496typedef struct hammer_mount *hammer_mount_t;
8750964d 497
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498struct hammer_sync_info {
499 int error;
500 int waitfor;
501};
502
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503#endif
504
505#if defined(_KERNEL)
506
507extern struct vop_ops hammer_vnode_vops;
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508extern struct vop_ops hammer_spec_vops;
509extern struct vop_ops hammer_fifo_vops;
66325755 510extern struct bio_ops hammer_bioops;
427e5fc6 511
d5ef456e 512extern int hammer_debug_general;
7d683b0f 513extern int hammer_debug_locks;
b3deaf57 514extern int hammer_debug_btree;
d113fda1 515extern int hammer_debug_tid;
b33e2cc0 516extern int hammer_debug_recover;
46fe7ae1 517extern int hammer_debug_recover_faults;
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518extern int hammer_count_inodes;
519extern int hammer_count_records;
520extern int hammer_count_record_datas;
521extern int hammer_count_volumes;
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522extern int hammer_count_buffers;
523extern int hammer_count_nodes;
7d683b0f 524extern int64_t hammer_contention_count;
b3deaf57 525
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526int hammer_vop_inactive(struct vop_inactive_args *);
527int hammer_vop_reclaim(struct vop_reclaim_args *);
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528int hammer_get_vnode(struct hammer_inode *ip, int lktype,
529 struct vnode **vpp);
36f82b23 530struct hammer_inode *hammer_get_inode(hammer_transaction_t trans,
61aeeb33 531 struct hammer_node **cache,
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532 u_int64_t obj_id, hammer_tid_t asof, int flags,
533 int *errorp);
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534void hammer_put_inode(struct hammer_inode *ip);
535void hammer_put_inode_ref(struct hammer_inode *ip);
536
8cd0a023 537int hammer_unload_volume(hammer_volume_t volume, void *data __unused);
a89aec1b 538int hammer_unload_buffer(hammer_buffer_t buffer, void *data __unused);
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539int hammer_install_volume(hammer_mount_t hmp, const char *volname);
540
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541int hammer_ip_lookup(hammer_cursor_t cursor, hammer_inode_t ip);
542int hammer_ip_first(hammer_cursor_t cursor, hammer_inode_t ip);
543int hammer_ip_next(hammer_cursor_t cursor);
40043e7f 544int hammer_ip_resolve_record_and_data(hammer_cursor_t cursor);
8cd0a023 545int hammer_ip_resolve_data(hammer_cursor_t cursor);
195c19a1 546int hammer_ip_delete_record(hammer_cursor_t cursor, hammer_tid_t tid);
7dc57964 547int hammer_delete_at_cursor(hammer_cursor_t cursor, int64_t *stat_bytes);
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548int hammer_ip_check_directory_empty(hammer_transaction_t trans,
549 hammer_inode_t ip);
fbc6e32a 550int hammer_sync_hmp(hammer_mount_t hmp, int waitfor);
fbc6e32a 551
8cd0a023 552hammer_record_t
40043e7f 553 hammer_alloc_mem_record(hammer_inode_t ip);
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554void hammer_flush_record_done(hammer_record_t record);
555void hammer_wait_mem_record(hammer_record_t record);
b3deaf57 556void hammer_rel_mem_record(hammer_record_t record);
8cd0a023 557
b84de5af 558
6a37e7e4 559int hammer_cursor_up(hammer_cursor_t cursor);
8cd0a023 560int hammer_cursor_down(hammer_cursor_t cursor);
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561int hammer_cursor_upgrade(hammer_cursor_t cursor);
562void hammer_cursor_downgrade(hammer_cursor_t cursor);
32c90105
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563int hammer_cursor_seek(hammer_cursor_t cursor, hammer_node_t node,
564 int index);
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565void hammer_lock_ex(struct hammer_lock *lock);
566int hammer_lock_ex_try(struct hammer_lock *lock);
567void hammer_lock_sh(struct hammer_lock *lock);
6a37e7e4
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568int hammer_lock_upgrade(struct hammer_lock *lock);
569void hammer_lock_downgrade(struct hammer_lock *lock);
427e5fc6 570void hammer_unlock(struct hammer_lock *lock);
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571void hammer_ref(struct hammer_lock *lock);
572void hammer_unref(struct hammer_lock *lock);
8cd0a023 573
66325755 574u_int32_t hammer_to_unix_xid(uuid_t *uuid);
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575void hammer_guid_to_uuid(uuid_t *uuid, u_int32_t guid);
576void hammer_to_timespec(hammer_tid_t tid, struct timespec *ts);
577hammer_tid_t hammer_timespec_to_transid(struct timespec *ts);
a89aec1b 578hammer_tid_t hammer_alloc_tid(hammer_transaction_t trans);
7f7c1f84 579hammer_tid_t hammer_now_tid(void);
d113fda1 580hammer_tid_t hammer_str_to_tid(const char *str);
8cd0a023 581
66325755 582enum vtype hammer_get_vnode_type(u_int8_t obj_type);
6b4f890b 583int hammer_get_dtype(u_int8_t obj_type);
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584u_int8_t hammer_get_obj_type(enum vtype vtype);
585int64_t hammer_directory_namekey(void *name, int len);
427e5fc6 586
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587int hammer_init_cursor(hammer_transaction_t trans, hammer_cursor_t cursor,
588 struct hammer_node **cache);
195c19a1 589
8cd0a023 590void hammer_done_cursor(hammer_cursor_t cursor);
6b4f890b 591void hammer_mem_done(hammer_cursor_t cursor);
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592
593int hammer_btree_lookup(hammer_cursor_t cursor);
d26d0ae9 594int hammer_btree_first(hammer_cursor_t cursor);
32c90105 595int hammer_btree_last(hammer_cursor_t cursor);
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596int hammer_btree_extract(hammer_cursor_t cursor, int flags);
597int hammer_btree_iterate(hammer_cursor_t cursor);
32c90105 598int hammer_btree_iterate_reverse(hammer_cursor_t cursor);
8cd0a023
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599int hammer_btree_insert(hammer_cursor_t cursor, hammer_btree_elm_t elm);
600int hammer_btree_delete(hammer_cursor_t cursor);
601int hammer_btree_cmp(hammer_base_elm_t key1, hammer_base_elm_t key2);
d26d0ae9 602int hammer_btree_chkts(hammer_tid_t ts, hammer_base_elm_t key);
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603int hammer_btree_correct_rhb(hammer_cursor_t cursor, hammer_tid_t tid);
604int hammer_btree_correct_lhb(hammer_cursor_t cursor, hammer_tid_t tid);
605
fe7678ee 606
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607int hammer_btree_lock_children(hammer_cursor_t cursor,
608 struct hammer_node_locklist **locklistp);
b33e2cc0 609
c0ade690
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610void hammer_print_btree_node(hammer_node_ondisk_t ondisk);
611void hammer_print_btree_elm(hammer_btree_elm_t elm, u_int8_t type, int i);
8750964d 612
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613void *hammer_bread(struct hammer_mount *hmp, hammer_off_t off,
614 int *errorp, struct hammer_buffer **bufferp);
615void *hammer_bnew(struct hammer_mount *hmp, hammer_off_t off,
616 int *errorp, struct hammer_buffer **bufferp);
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617
618hammer_volume_t hammer_get_root_volume(hammer_mount_t hmp, int *errorp);
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619int hammer_dowrite(hammer_transaction_t trans, hammer_inode_t ip,
620 struct bio *bio);
427e5fc6 621
8cd0a023 622hammer_volume_t hammer_get_volume(hammer_mount_t hmp,
427e5fc6 623 int32_t vol_no, int *errorp);
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624hammer_buffer_t hammer_get_buffer(hammer_mount_t hmp,
625 hammer_off_t buf_offset, int isnew, int *errorp);
b58c6388 626void hammer_uncache_buffer(struct hammer_mount *hmp, hammer_off_t off);
8cd0a023 627
fbc6e32a 628int hammer_ref_volume(hammer_volume_t volume);
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629int hammer_ref_buffer(hammer_buffer_t buffer);
630void hammer_flush_buffer_nodes(hammer_buffer_t buffer);
631
8cd0a023 632void hammer_rel_volume(hammer_volume_t volume, int flush);
8cd0a023
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633void hammer_rel_buffer(hammer_buffer_t buffer, int flush);
634
513ca7d7
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635int hammer_vfs_export(struct mount *mp, int op,
636 const struct export_args *export);
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637hammer_node_t hammer_get_node(hammer_mount_t hmp,
638 hammer_off_t node_offset, int *errorp);
740d8317 639void hammer_ref_node(hammer_node_t node);
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640hammer_node_t hammer_ref_node_safe(struct hammer_mount *hmp,
641 struct hammer_node **cache, int *errorp);
8cd0a023 642void hammer_rel_node(hammer_node_t node);
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643void hammer_delete_node(hammer_transaction_t trans,
644 hammer_node_t node);
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645void hammer_cache_node(hammer_node_t node,
646 struct hammer_node **cache);
647void hammer_uncache_node(struct hammer_node **cache);
648void hammer_flush_node(hammer_node_t node);
649
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650void hammer_dup_buffer(struct hammer_buffer **bufferp,
651 struct hammer_buffer *buffer);
36f82b23
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652hammer_node_t hammer_alloc_btree(hammer_transaction_t trans, int *errorp);
653void *hammer_alloc_record(hammer_transaction_t trans,
bf686dbe 654 hammer_off_t *rec_offp, u_int16_t rec_type,
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655 struct hammer_buffer **rec_bufferp,
656 int32_t data_len, void **datap,
657 struct hammer_buffer **data_bufferp, int *errorp);
36f82b23 658void *hammer_alloc_data(hammer_transaction_t trans, int32_t data_len,
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659 hammer_off_t *data_offsetp,
660 struct hammer_buffer **data_bufferp, int *errorp);
661
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662int hammer_generate_undo(hammer_transaction_t trans, hammer_io_t io,
663 hammer_off_t zone1_offset, void *base, int len);
427e5fc6 664
66325755 665void hammer_put_volume(struct hammer_volume *volume, int flush);
66325755 666void hammer_put_buffer(struct hammer_buffer *buffer, int flush);
427e5fc6 667
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668hammer_off_t hammer_freemap_alloc(hammer_transaction_t trans,
669 hammer_off_t owner, int *errorp);
670void hammer_freemap_free(hammer_transaction_t trans, hammer_off_t phys_offset,
c3be93f2 671 hammer_off_t owner, int *errorp);
36f82b23 672hammer_off_t hammer_blockmap_alloc(hammer_transaction_t trans, int zone,
40043e7f 673 int bytes, int *errorp);
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674void hammer_blockmap_free(hammer_transaction_t trans,
675 hammer_off_t bmap_off, int bytes);
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676int hammer_blockmap_getfree(hammer_mount_t hmp, hammer_off_t bmap_off,
677 int *curp, int *errorp);
40043e7f
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678hammer_off_t hammer_blockmap_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
679 int *errorp);
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680hammer_off_t hammer_undo_lookup(hammer_mount_t hmp, hammer_off_t bmap_off,
681 int *errorp);
40043e7f 682
8cd0a023
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683void hammer_start_transaction(struct hammer_transaction *trans,
684 struct hammer_mount *hmp);
36f82b23
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685void hammer_simple_transaction(struct hammer_transaction *trans,
686 struct hammer_mount *hmp);
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687void hammer_start_transaction_fls(struct hammer_transaction *trans,
688 struct hammer_mount *hmp);
689void hammer_done_transaction(struct hammer_transaction *trans);
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690
691void hammer_modify_inode(struct hammer_transaction *trans,
8cd0a023 692 hammer_inode_t ip, int flags);
f90dde4c 693void hammer_flush_inode(hammer_inode_t ip, int flags);
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694void hammer_flush_inode_done(hammer_inode_t ip);
695void hammer_wait_inode(hammer_inode_t ip);
696
8cd0a023
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697int hammer_create_inode(struct hammer_transaction *trans, struct vattr *vap,
698 struct ucred *cred, struct hammer_inode *dip,
699 struct hammer_inode **ipp);
a89aec1b 700void hammer_rel_inode(hammer_inode_t ip, int flush);
b84de5af 701int hammer_sync_inode(hammer_inode_t ip, int handle_delete);
8cd0a023 702
a89aec1b 703int hammer_ip_add_directory(struct hammer_transaction *trans,
8cd0a023
MD
704 hammer_inode_t dip, struct namecache *ncp,
705 hammer_inode_t nip);
a89aec1b 706int hammer_ip_del_directory(struct hammer_transaction *trans,
8cd0a023
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707 hammer_cursor_t cursor, hammer_inode_t dip,
708 hammer_inode_t ip);
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709int hammer_ip_add_record(struct hammer_transaction *trans,
710 hammer_record_t record);
a89aec1b 711int hammer_ip_delete_range(struct hammer_transaction *trans,
47197d71 712 hammer_inode_t ip, int64_t ran_beg, int64_t ran_end);
7a04d74f
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713int hammer_ip_delete_range_all(struct hammer_transaction *trans,
714 hammer_inode_t ip);
c0ade690 715int hammer_ip_sync_data(struct hammer_transaction *trans,
8cd0a023 716 hammer_inode_t ip, int64_t offset,
47197d71 717 void *data, int bytes);
36f82b23 718int hammer_ip_sync_record(hammer_transaction_t trans, hammer_record_t rec);
66325755 719
7dc57964
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720int hammer_ioctl(hammer_inode_t ip, u_long com, caddr_t data, int fflag,
721 struct ucred *cred);
722
10a5d1ba
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723void hammer_io_init(hammer_io_t io, hammer_mount_t hmp,
724 enum hammer_io_type type);
725void hammer_io_reinit(hammer_io_t io, enum hammer_io_type type);
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726int hammer_io_read(struct vnode *devvp, struct hammer_io *io);
727int hammer_io_new(struct vnode *devvp, struct hammer_io *io);
b58c6388 728void hammer_io_release(struct hammer_io *io);
055f5ff8 729void hammer_io_flush(struct hammer_io *io);
8cd0a023 730int hammer_io_checkflush(hammer_io_t io);
61aeeb33 731void hammer_io_clear_modify(struct hammer_io *io);
055f5ff8 732void hammer_io_waitdep(struct hammer_io *io);
66325755 733
36f82b23
MD
734void hammer_modify_volume(hammer_transaction_t trans, hammer_volume_t volume,
735 void *base, int len);
736void hammer_modify_buffer(hammer_transaction_t trans, hammer_buffer_t buffer,
737 void *base, int len);
10a5d1ba
MD
738void hammer_modify_volume_done(hammer_volume_t volume);
739void hammer_modify_buffer_done(hammer_buffer_t buffer);
0b075555 740
36f82b23
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741int hammer_ioc_reblock(hammer_transaction_t trans, hammer_inode_t ip,
742 struct hammer_ioc_reblock *reblock);
bf686dbe
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743
744void hammer_init_holes(hammer_mount_t hmp, hammer_holes_t holes);
745void hammer_free_holes(hammer_mount_t hmp, hammer_holes_t holes);
855942b6 746int hammer_signal_check(hammer_mount_t hmp);
bf686dbe 747
059819e3
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748void hammer_flusher_create(hammer_mount_t hmp);
749void hammer_flusher_destroy(hammer_mount_t hmp);
750void hammer_flusher_sync(hammer_mount_t hmp);
751void hammer_flusher_async(hammer_mount_t hmp);
752
f90dde4c
MD
753int hammer_recover(hammer_mount_t hmp, hammer_volume_t rootvol);
754
055f5ff8 755#endif
427e5fc6 756
8cd0a023 757static __inline void
36f82b23 758hammer_modify_node_noundo(hammer_transaction_t trans, hammer_node_t node)
bf686dbe 759{
36f82b23 760 hammer_modify_buffer(trans, node->buffer, NULL, 0);
bf686dbe
MD
761}
762
763static __inline void
36f82b23 764hammer_modify_node_all(hammer_transaction_t trans, struct hammer_node *node)
8cd0a023 765{
36f82b23
MD
766 hammer_modify_buffer(trans, node->buffer,
767 node->ondisk, sizeof(*node->ondisk));
427e5fc6
MD
768}
769
bf686dbe 770static __inline void
36f82b23
MD
771hammer_modify_node(hammer_transaction_t trans, hammer_node_t node,
772 void *base, int len)
bf686dbe
MD
773{
774 KKASSERT((char *)base >= (char *)node->ondisk &&
775 (char *)base + len <=
776 (char *)node->ondisk + sizeof(*node->ondisk));
36f82b23 777 hammer_modify_buffer(trans, node->buffer, base, len);
bf686dbe
MD
778}
779
10a5d1ba
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780static __inline void
781hammer_modify_node_done(hammer_node_t node)
782{
783 hammer_modify_buffer_done(node->buffer);
784}
785
bf686dbe 786static __inline void
36f82b23
MD
787hammer_modify_record(hammer_transaction_t trans, hammer_buffer_t buffer,
788 void *base, int len)
bf686dbe
MD
789{
790 KKASSERT((char *)base >= (char *)buffer->ondisk &&
791 (char *)base + len <= (char *)buffer->ondisk + HAMMER_BUFSIZE);
36f82b23 792 hammer_modify_buffer(trans, buffer, base, len);
bf686dbe
MD
793}
794
10a5d1ba
MD
795static __inline void
796hammer_modify_record_done(hammer_buffer_t buffer)
797{
798 hammer_modify_buffer_done(buffer);
799}
800