2 * Copyright (c) 2007-2008 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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
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.
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
34 * $DragonFly: src/sys/vfs/hammer/hammer.h,v 1.57 2008/05/03 05:28:55 dillon Exp $
37 * This header file contains structures used internally by the HAMMERFS
38 * implementation. See hammer_disk.h for on-disk structures.
41 #include <sys/param.h>
42 #include <sys/types.h>
43 #include <sys/kernel.h>
45 #include <sys/systm.h>
47 #include <sys/malloc.h>
48 #include <sys/mount.h>
49 #include <sys/mountctl.h>
50 #include <sys/vnode.h>
52 #include <sys/globaldata.h>
53 #include <sys/lockf.h>
55 #include <sys/queue.h>
56 #include <sys/globaldata.h>
59 #include <sys/signal2.h>
60 #include "hammer_disk.h"
61 #include "hammer_mount.h"
62 #include "hammer_ioctl.h"
64 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
66 MALLOC_DECLARE(M_HAMMER
);
71 * Key structure used for custom RB tree inode lookups. This prototypes
72 * the function hammer_ino_rb_tree_RB_LOOKUP_INFO(root, info).
74 typedef struct hammer_inode_info
{
75 int64_t obj_id
; /* (key) object identifier */
76 hammer_tid_t obj_asof
; /* (key) snapshot transid or 0 */
77 } *hammer_inode_info_t
;
79 typedef enum hammer_transaction_type
{
83 } hammer_transaction_type_t
;
86 * HAMMER Transaction tracking
88 struct hammer_transaction
{
89 hammer_transaction_type_t type
;
90 struct hammer_mount
*hmp
;
93 struct hammer_volume
*rootvol
;
96 typedef struct hammer_transaction
*hammer_transaction_t
;
102 int refs
; /* active references delay writes */
103 int lockcount
; /* lock count for exclusive/shared access */
105 struct thread
*locktd
;
109 hammer_islocked(struct hammer_lock
*lock
)
111 return(lock
->lockcount
!= 0);
115 hammer_isactive(struct hammer_lock
*lock
)
117 return(lock
->refs
!= 0);
121 hammer_islastref(struct hammer_lock
*lock
)
123 return(lock
->refs
== 1);
127 * Return if we specifically own the lock exclusively.
130 hammer_lock_excl_owned(struct hammer_lock
*lock
, thread_t td
)
132 if (lock
->lockcount
> 0 && lock
->locktd
== td
)
138 * Flush state, used by various structures
140 typedef enum hammer_inode_state
{
144 } hammer_inode_state_t
;
146 TAILQ_HEAD(hammer_record_list
, hammer_record
);
149 * Cache object ids. A fixed number of objid cache structures are
150 * created to reserve object id's for newly created files in multiples
151 * of 100,000, localized to a particular directory, and recycled as
152 * needed. This allows parallel create operations in different
153 * directories to retain fairly localized object ids which in turn
154 * improves reblocking performance and layout.
156 #define OBJID_CACHE_SIZE 128
157 #define OBJID_CACHE_BULK 100000
159 typedef struct hammer_objid_cache
{
160 TAILQ_ENTRY(hammer_objid_cache
) entry
;
161 struct hammer_inode
*dip
;
162 hammer_tid_t next_tid
;
164 } *hammer_objid_cache_t
;
167 * Structure used to represent an inode in-memory.
169 * The record and data associated with an inode may be out of sync with
170 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag
173 * An inode may also hold a cache of unsynchronized records, used for
174 * database and directories only. Unsynchronized regular file data is
175 * stored in the buffer cache.
177 * NOTE: A file which is created and destroyed within the initial
178 * synchronization period can wind up not doing any disk I/O at all.
180 * Finally, an inode may cache numerous disk-referencing B-Tree cursors.
182 struct hammer_ino_rb_tree
;
184 RB_HEAD(hammer_ino_rb_tree
, hammer_inode
);
185 RB_PROTOTYPEX(hammer_ino_rb_tree
, INFO
, hammer_inode
, rb_node
,
186 hammer_ino_rb_compare
, hammer_inode_info_t
);
188 struct hammer_rec_rb_tree
;
189 struct hammer_record
;
190 RB_HEAD(hammer_rec_rb_tree
, hammer_record
);
191 RB_PROTOTYPEX(hammer_rec_rb_tree
, INFO
, hammer_record
, rb_node
,
192 hammer_rec_rb_compare
, hammer_base_elm_t
);
194 TAILQ_HEAD(hammer_node_list
, hammer_node
);
196 struct hammer_inode
{
197 RB_ENTRY(hammer_inode
) rb_node
;
198 hammer_inode_state_t flush_state
;
200 TAILQ_ENTRY(hammer_inode
) flush_entry
;
201 struct hammer_record_list target_list
; /* target of dependant recs */
202 u_int64_t obj_id
; /* (key) object identifier */
203 hammer_tid_t obj_asof
; /* (key) snapshot or 0 */
204 struct hammer_mount
*hmp
;
205 hammer_objid_cache_t objid_cache
;
207 int error
; /* flush error */
208 int cursor_ip_refs
; /* sanity */
210 struct lockf advlock
;
211 struct hammer_lock lock
; /* sync copy interlock */
212 TAILQ_HEAD(, bio
) bio_list
; /* BIOs to flush out */
213 TAILQ_HEAD(, bio
) bio_alt_list
; /* BIOs to flush out */
215 struct hammer_inode_record ino_rec
; /* in-memory cache */
216 struct hammer_inode_data ino_data
; /* in-memory cache */
217 struct hammer_rec_rb_tree rec_tree
; /* in-memory cache */
218 struct hammer_node
*cache
[2]; /* search initiate cache */
221 * When a demark is created to synchronize an inode to
222 * disk, certain fields are copied so the front-end VOPs
223 * can continue to run in parallel with the synchronization
224 * occuring in the background.
226 int sync_flags
; /* to-sync flags cache */
227 off_t sync_trunc_off
; /* to-sync truncation */
228 struct hammer_inode_record sync_ino_rec
;/* to-sync cache */
229 struct hammer_inode_data sync_ino_data
; /* to-sync cache */
232 typedef struct hammer_inode
*hammer_inode_t
;
234 #define VTOI(vp) ((struct hammer_inode *)(vp)->v_data)
236 #define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */
237 #define HAMMER_INODE_RDIRTY 0x0002 /* in-memory ino_rec is dirty */
238 #define HAMMER_INODE_ITIMES 0x0004 /* in-memory mtime/atime modified */
239 #define HAMMER_INODE_XDIRTY 0x0008 /* in-memory records */
240 #define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */
241 #define HAMMER_INODE_FLUSH 0x0020 /* flush on last ref */
242 #define HAMMER_INODE_DELETED 0x0080 /* inode delete (backend) */
243 #define HAMMER_INODE_DELONDISK 0x0100 /* delete synchronized to disk */
244 #define HAMMER_INODE_RO 0x0200 /* read-only (because of as-of) */
245 #define HAMMER_INODE_UNUSED0400 0x0400
246 #define HAMMER_INODE_DONDISK 0x0800 /* data records may be on disk */
247 #define HAMMER_INODE_BUFS 0x1000 /* dirty high level bps present */
248 #define HAMMER_INODE_REFLUSH 0x2000 /* pipelined flush during flush */
249 #define HAMMER_INODE_WRITE_ALT 0x4000 /* strategy writes to alt bioq */
250 #define HAMMER_INODE_FLUSHW 0x8000 /* Someone waiting for flush */
252 #define HAMMER_INODE_TRUNCATED 0x00010000
253 #define HAMMER_INODE_DELETING 0x00020000 /* inode delete request (frontend)*/
254 #define HAMMER_INODE_RESIGNAL 0x00040000 /* re-signal on re-flush */
256 #define HAMMER_INODE_MODMASK (HAMMER_INODE_DDIRTY|HAMMER_INODE_RDIRTY| \
257 HAMMER_INODE_XDIRTY|HAMMER_INODE_BUFS| \
258 HAMMER_INODE_ITIMES|HAMMER_INODE_TRUNCATED|\
259 HAMMER_INODE_DELETING)
261 #define HAMMER_INODE_MODMASK_NOXDIRTY \
262 (HAMMER_INODE_MODMASK & ~HAMMER_INODE_XDIRTY)
264 #define HAMMER_MAX_INODE_CURSORS 4
266 #define HAMMER_FLUSH_SIGNAL 0x0001
267 #define HAMMER_FLUSH_RECURSION 0x0002
270 * Structure used to represent an unsynchronized record in-memory. These
271 * records typically represent directory entries. Only non-historical
272 * records are kept in-memory.
274 * Records are organized as a per-inode RB-Tree. If the inode is not
275 * on disk then neither are any records and the in-memory record tree
276 * represents the entire contents of the inode. If the inode is on disk
277 * then the on-disk B-Tree is scanned in parallel with the in-memory
278 * RB-Tree to synthesize the current state of the file.
280 * Records are also used to enforce the ordering of directory create/delete
281 * operations. A new inode will not be flushed to disk unless its related
282 * directory entry is also being flushed at the same time. A directory entry
283 * will not be removed unless its related inode is also being removed at the
286 typedef enum hammer_record_type
{
287 HAMMER_MEM_RECORD_ADD
, /* positive memory cache record */
288 HAMMER_MEM_RECORD_DEL
/* negative delete-on-disk record */
289 } hammer_record_type_t
;
291 struct hammer_record
{
292 RB_ENTRY(hammer_record
) rb_node
;
293 TAILQ_ENTRY(hammer_record
) target_entry
;
294 hammer_inode_state_t flush_state
;
296 hammer_record_type_t type
;
297 struct hammer_lock lock
;
298 struct hammer_inode
*ip
;
299 struct hammer_inode
*target_ip
;
300 union hammer_record_ondisk rec
;
301 union hammer_data_ondisk
*data
;
305 typedef struct hammer_record
*hammer_record_t
;
308 * Record flags. Note that FE can only be set by the frontend if the
309 * record has not been interlocked by the backend w/ BE.
311 #define HAMMER_RECF_ALLOCDATA 0x0001
312 #define HAMMER_RECF_ONRBTREE 0x0002
313 #define HAMMER_RECF_DELETED_FE 0x0004 /* deleted (frontend) */
314 #define HAMMER_RECF_DELETED_BE 0x0008 /* deleted (backend) */
315 #define HAMMER_RECF_INBAND 0x0010
316 #define HAMMER_RECF_INTERLOCK_BE 0x0020 /* backend interlock */
317 #define HAMMER_RECF_WANTED 0x0040
318 #define HAMMER_RECF_CONVERT_DELETE 0x0100 /* special case */
321 * In-memory structures representing on-disk structures.
323 struct hammer_volume
;
324 struct hammer_buffer
;
326 RB_HEAD(hammer_vol_rb_tree
, hammer_volume
);
327 RB_HEAD(hammer_buf_rb_tree
, hammer_buffer
);
328 RB_HEAD(hammer_nod_rb_tree
, hammer_node
);
330 RB_PROTOTYPE2(hammer_vol_rb_tree
, hammer_volume
, rb_node
,
331 hammer_vol_rb_compare
, int32_t);
332 RB_PROTOTYPE2(hammer_buf_rb_tree
, hammer_buffer
, rb_node
,
333 hammer_buf_rb_compare
, hammer_off_t
);
334 RB_PROTOTYPE2(hammer_nod_rb_tree
, hammer_node
, rb_node
,
335 hammer_nod_rb_compare
, hammer_off_t
);
338 * IO management - embedded at the head of various in-memory structures
340 * VOLUME - hammer_volume containing meta-data
341 * META_BUFFER - hammer_buffer containing meta-data
342 * DATA_BUFFER - hammer_buffer containing pure-data
344 * Dirty volume headers and dirty meta-data buffers are locked until the
345 * flusher can sequence them out. Dirty pure-data buffers can be written.
346 * Clean buffers can be passively released.
348 typedef enum hammer_io_type
{
349 HAMMER_STRUCTURE_VOLUME
,
350 HAMMER_STRUCTURE_META_BUFFER
,
351 HAMMER_STRUCTURE_UNDO_BUFFER
,
352 HAMMER_STRUCTURE_DATA_BUFFER
355 union hammer_io_structure
;
359 LIST_ENTRY(worklist
) node
;
362 TAILQ_HEAD(hammer_io_list
, hammer_io
);
363 typedef struct hammer_io_list
*hammer_io_list_t
;
366 struct worklist worklist
;
367 struct hammer_lock lock
;
368 enum hammer_io_type type
;
369 struct hammer_mount
*hmp
;
370 TAILQ_ENTRY(hammer_io
) mod_entry
; /* list entry if modified */
371 hammer_io_list_t mod_list
;
374 int loading
; /* loading/unloading interlock */
377 u_int modified
: 1; /* bp's data was modified */
378 u_int released
: 1; /* bp released (w/ B_LOCKED set) */
379 u_int running
: 1; /* bp write IO in progress */
380 u_int waiting
: 1; /* someone is waiting on us */
381 u_int validated
: 1; /* ondisk has been validated */
382 u_int flush
: 1; /* flush on last release */
383 u_int waitdep
: 1; /* flush waits for dependancies */
386 typedef struct hammer_io
*hammer_io_t
;
389 * In-memory volume representing on-disk buffer
391 struct hammer_volume
{
393 RB_ENTRY(hammer_volume
) rb_node
;
394 struct hammer_buf_rb_tree rb_bufs_root
;
395 struct hammer_volume_ondisk
*ondisk
;
397 int64_t nblocks
; /* note: special calculation for statfs */
398 int64_t buffer_base
; /* base offset of buffer 0 */
399 hammer_off_t maxbuf_off
; /* Maximum buffer offset */
405 typedef struct hammer_volume
*hammer_volume_t
;
408 * In-memory buffer (other then volume, super-cluster, or cluster),
409 * representing an on-disk buffer.
411 struct hammer_buffer
{
413 RB_ENTRY(hammer_buffer
) rb_node
;
415 struct hammer_volume
*volume
;
416 hammer_off_t zone2_offset
;
417 hammer_off_t zoneX_offset
;
418 struct hammer_node_list clist
;
421 typedef struct hammer_buffer
*hammer_buffer_t
;
424 * In-memory B-Tree node, representing an on-disk B-Tree node.
426 * This is a hang-on structure which is backed by a hammer_buffer,
427 * indexed by a hammer_cluster, and used for fine-grained locking of
428 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer
429 * can contain multiple nodes representing wildly disassociated portions
430 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis.
432 * This structure uses a cluster-relative index to reduce the number
433 * of layers required to access it, and also because all on-disk B-Tree
434 * references are cluster-relative offsets.
437 struct hammer_lock lock
; /* node-by-node lock */
438 TAILQ_ENTRY(hammer_node
) entry
; /* per-buffer linkage */
439 RB_ENTRY(hammer_node
) rb_node
; /* per-cluster linkage */
440 hammer_off_t node_offset
; /* full offset spec */
441 struct hammer_mount
*hmp
;
442 struct hammer_buffer
*buffer
; /* backing buffer */
443 hammer_node_ondisk_t ondisk
; /* ptr to on-disk structure */
444 struct hammer_node
**cache1
; /* passive cache(s) */
445 struct hammer_node
**cache2
;
447 int loading
; /* load interlock */
450 #define HAMMER_NODE_DELETED 0x0001
451 #define HAMMER_NODE_FLUSH 0x0002
453 typedef struct hammer_node
*hammer_node_t
;
456 * List of locked nodes.
458 struct hammer_node_locklist
{
459 struct hammer_node_locklist
*next
;
463 typedef struct hammer_node_locklist
*hammer_node_locklist_t
;
467 * Common I/O management structure - embedded in in-memory structures
468 * which are backed by filesystem buffers.
470 union hammer_io_structure
{
472 struct hammer_volume volume
;
473 struct hammer_buffer buffer
;
476 typedef union hammer_io_structure
*hammer_io_structure_t
;
479 * Allocation holes are recorded for a short period of time in an attempt
480 * to use up the space.
483 #define HAMMER_MAX_HOLES 8
487 struct hammer_holes
{
488 TAILQ_HEAD(, hammer_hole
) list
;
492 typedef struct hammer_holes
*hammer_holes_t
;
495 TAILQ_ENTRY(hammer_hole
) entry
;
500 typedef struct hammer_hole
*hammer_hole_t
;
502 #include "hammer_cursor.h"
505 * Internal hammer mount data structure
507 struct hammer_mount
{
509 /*struct vnode *rootvp;*/
510 struct hammer_ino_rb_tree rb_inos_root
;
511 struct hammer_vol_rb_tree rb_vols_root
;
512 struct hammer_nod_rb_tree rb_nods_root
;
513 struct hammer_volume
*rootvol
;
514 struct hammer_base_elm root_btree_beg
;
515 struct hammer_base_elm root_btree_end
;
516 char *zbuf
; /* HAMMER_BUFSIZE bytes worth of all-zeros */
521 int flusher_signal
; /* flusher thread sequencer */
522 int flusher_act
; /* currently active flush group */
523 int flusher_done
; /* set to act when complete */
524 int flusher_next
; /* next flush group */
525 int flusher_lock
; /* lock sequencing of the next flush */
529 u_int check_interrupt
;
532 struct hammer_io_list volu_list
; /* dirty undo buffers */
533 struct hammer_io_list undo_list
; /* dirty undo buffers */
534 struct hammer_io_list data_list
; /* dirty data buffers */
535 struct hammer_io_list meta_list
; /* dirty meta bufs */
536 struct hammer_io_list lose_list
; /* loose buffers */
537 int locked_dirty_count
; /* meta/volu count */
538 int io_running_count
;
539 int objid_cache_count
;
541 hammer_off_t next_tid
;
542 u_int32_t namekey_iterator
;
543 hammer_off_t zone_limits
[HAMMER_MAX_ZONES
];
544 struct netexport export
;
545 struct hammer_lock sync_lock
;
546 struct lock blockmap_lock
;
547 struct hammer_blockmap blockmap
[HAMMER_MAX_ZONES
];
548 struct hammer_holes holes
[HAMMER_MAX_ZONES
];
549 TAILQ_HEAD(, hammer_inode
) flush_list
;
550 TAILQ_HEAD(, hammer_objid_cache
) objid_cache_list
;
553 typedef struct hammer_mount
*hammer_mount_t
;
555 struct hammer_sync_info
{
564 extern struct vop_ops hammer_vnode_vops
;
565 extern struct vop_ops hammer_spec_vops
;
566 extern struct vop_ops hammer_fifo_vops
;
567 extern struct bio_ops hammer_bioops
;
569 extern int hammer_debug_general
;
570 extern int hammer_debug_locks
;
571 extern int hammer_debug_btree
;
572 extern int hammer_debug_tid
;
573 extern int hammer_debug_recover
;
574 extern int hammer_debug_recover_faults
;
575 extern int hammer_count_inodes
;
576 extern int hammer_count_records
;
577 extern int hammer_count_record_datas
;
578 extern int hammer_count_volumes
;
579 extern int hammer_count_buffers
;
580 extern int hammer_count_nodes
;
581 extern int hammer_count_dirtybufs
;
582 extern int hammer_limit_dirtybufs
;
583 extern int hammer_bio_count
;
584 extern int64_t hammer_contention_count
;
586 int hammer_vop_inactive(struct vop_inactive_args
*);
587 int hammer_vop_reclaim(struct vop_reclaim_args
*);
588 int hammer_get_vnode(struct hammer_inode
*ip
, int lktype
,
590 struct hammer_inode
*hammer_get_inode(hammer_transaction_t trans
,
591 struct hammer_node
**cache
,
592 u_int64_t obj_id
, hammer_tid_t asof
, int flags
,
594 void hammer_put_inode(struct hammer_inode
*ip
);
595 void hammer_put_inode_ref(struct hammer_inode
*ip
);
597 int hammer_unload_volume(hammer_volume_t volume
, void *data __unused
);
598 int hammer_unload_buffer(hammer_buffer_t buffer
, void *data __unused
);
599 int hammer_install_volume(hammer_mount_t hmp
, const char *volname
);
601 int hammer_ip_lookup(hammer_cursor_t cursor
, hammer_inode_t ip
);
602 int hammer_ip_first(hammer_cursor_t cursor
);
603 int hammer_ip_next(hammer_cursor_t cursor
);
604 int hammer_ip_resolve_record_and_data(hammer_cursor_t cursor
);
605 int hammer_ip_resolve_data(hammer_cursor_t cursor
);
606 int hammer_ip_delete_record(hammer_cursor_t cursor
, hammer_tid_t tid
);
607 int hammer_delete_at_cursor(hammer_cursor_t cursor
, int64_t *stat_bytes
);
608 int hammer_ip_check_directory_empty(hammer_transaction_t trans
,
609 hammer_cursor_t parent_cursor
, hammer_inode_t ip
);
610 int hammer_sync_hmp(hammer_mount_t hmp
, int waitfor
);
613 hammer_alloc_mem_record(hammer_inode_t ip
);
614 void hammer_flush_record_done(hammer_record_t record
, int error
);
615 void hammer_wait_mem_record(hammer_record_t record
);
616 void hammer_rel_mem_record(hammer_record_t record
);
618 int hammer_cursor_up(hammer_cursor_t cursor
);
619 int hammer_cursor_down(hammer_cursor_t cursor
);
620 int hammer_cursor_upgrade(hammer_cursor_t cursor
);
621 void hammer_cursor_downgrade(hammer_cursor_t cursor
);
622 int hammer_cursor_seek(hammer_cursor_t cursor
, hammer_node_t node
,
624 void hammer_lock_ex(struct hammer_lock
*lock
);
625 int hammer_lock_ex_try(struct hammer_lock
*lock
);
626 void hammer_lock_sh(struct hammer_lock
*lock
);
627 int hammer_lock_upgrade(struct hammer_lock
*lock
);
628 void hammer_lock_downgrade(struct hammer_lock
*lock
);
629 void hammer_unlock(struct hammer_lock
*lock
);
630 void hammer_ref(struct hammer_lock
*lock
);
631 void hammer_unref(struct hammer_lock
*lock
);
633 u_int32_t
hammer_to_unix_xid(uuid_t
*uuid
);
634 void hammer_guid_to_uuid(uuid_t
*uuid
, u_int32_t guid
);
635 void hammer_to_timespec(hammer_tid_t tid
, struct timespec
*ts
);
636 hammer_tid_t
hammer_timespec_to_transid(struct timespec
*ts
);
637 hammer_tid_t
hammer_now_tid(void);
638 hammer_tid_t
hammer_str_to_tid(const char *str
);
639 hammer_tid_t
hammer_alloc_objid(hammer_transaction_t trans
, hammer_inode_t dip
);
640 void hammer_clear_objid(hammer_inode_t dip
);
641 void hammer_destroy_objid_cache(hammer_mount_t hmp
);
643 enum vtype
hammer_get_vnode_type(u_int8_t obj_type
);
644 int hammer_get_dtype(u_int8_t obj_type
);
645 u_int8_t
hammer_get_obj_type(enum vtype vtype
);
646 int64_t hammer_directory_namekey(void *name
, int len
);
648 int hammer_init_cursor(hammer_transaction_t trans
, hammer_cursor_t cursor
,
649 struct hammer_node
**cache
, hammer_inode_t ip
);
650 int hammer_reinit_cursor(hammer_cursor_t cursor
);
651 void hammer_normalize_cursor(hammer_cursor_t cursor
);
652 void hammer_done_cursor(hammer_cursor_t cursor
);
653 void hammer_mem_done(hammer_cursor_t cursor
);
655 int hammer_btree_lookup(hammer_cursor_t cursor
);
656 int hammer_btree_first(hammer_cursor_t cursor
);
657 int hammer_btree_last(hammer_cursor_t cursor
);
658 int hammer_btree_extract(hammer_cursor_t cursor
, int flags
);
659 int hammer_btree_iterate(hammer_cursor_t cursor
);
660 int hammer_btree_iterate_reverse(hammer_cursor_t cursor
);
661 int hammer_btree_insert(hammer_cursor_t cursor
, hammer_btree_elm_t elm
);
662 int hammer_btree_delete(hammer_cursor_t cursor
);
663 int hammer_btree_cmp(hammer_base_elm_t key1
, hammer_base_elm_t key2
);
664 int hammer_btree_chkts(hammer_tid_t ts
, hammer_base_elm_t key
);
665 int hammer_btree_correct_rhb(hammer_cursor_t cursor
, hammer_tid_t tid
);
666 int hammer_btree_correct_lhb(hammer_cursor_t cursor
, hammer_tid_t tid
);
669 int hammer_btree_lock_children(hammer_cursor_t cursor
,
670 struct hammer_node_locklist
**locklistp
);
672 void hammer_print_btree_node(hammer_node_ondisk_t ondisk
);
673 void hammer_print_btree_elm(hammer_btree_elm_t elm
, u_int8_t type
, int i
);
675 void *hammer_bread(struct hammer_mount
*hmp
, hammer_off_t off
,
676 int *errorp
, struct hammer_buffer
**bufferp
);
677 void *hammer_bnew(struct hammer_mount
*hmp
, hammer_off_t off
,
678 int *errorp
, struct hammer_buffer
**bufferp
);
680 hammer_volume_t
hammer_get_root_volume(hammer_mount_t hmp
, int *errorp
);
681 int hammer_dowrite(hammer_cursor_t cursor
, hammer_inode_t ip
,
684 hammer_volume_t
hammer_get_volume(hammer_mount_t hmp
,
685 int32_t vol_no
, int *errorp
);
686 hammer_buffer_t
hammer_get_buffer(hammer_mount_t hmp
,
687 hammer_off_t buf_offset
, int isnew
, int *errorp
);
688 void hammer_uncache_buffer(struct hammer_mount
*hmp
, hammer_off_t off
);
690 int hammer_ref_volume(hammer_volume_t volume
);
691 int hammer_ref_buffer(hammer_buffer_t buffer
);
692 void hammer_flush_buffer_nodes(hammer_buffer_t buffer
);
694 void hammer_rel_volume(hammer_volume_t volume
, int flush
);
695 void hammer_rel_buffer(hammer_buffer_t buffer
, int flush
);
697 int hammer_vfs_export(struct mount
*mp
, int op
,
698 const struct export_args
*export
);
699 hammer_node_t
hammer_get_node(hammer_mount_t hmp
,
700 hammer_off_t node_offset
, int *errorp
);
701 void hammer_ref_node(hammer_node_t node
);
702 hammer_node_t
hammer_ref_node_safe(struct hammer_mount
*hmp
,
703 struct hammer_node
**cache
, int *errorp
);
704 void hammer_rel_node(hammer_node_t node
);
705 void hammer_delete_node(hammer_transaction_t trans
,
707 void hammer_cache_node(hammer_node_t node
,
708 struct hammer_node
**cache
);
709 void hammer_uncache_node(struct hammer_node
**cache
);
710 void hammer_flush_node(hammer_node_t node
);
712 void hammer_dup_buffer(struct hammer_buffer
**bufferp
,
713 struct hammer_buffer
*buffer
);
714 hammer_node_t
hammer_alloc_btree(hammer_transaction_t trans
, int *errorp
);
715 void *hammer_alloc_record(hammer_transaction_t trans
,
716 hammer_off_t
*rec_offp
, u_int16_t rec_type
,
717 struct hammer_buffer
**rec_bufferp
,
718 int32_t data_len
, void **datap
,
719 struct hammer_buffer
**data_bufferp
, int *errorp
);
720 void *hammer_alloc_data(hammer_transaction_t trans
, int32_t data_len
,
721 hammer_off_t
*data_offsetp
,
722 struct hammer_buffer
**data_bufferp
, int *errorp
);
724 int hammer_generate_undo(hammer_transaction_t trans
, hammer_io_t io
,
725 hammer_off_t zone1_offset
, void *base
, int len
);
727 void hammer_put_volume(struct hammer_volume
*volume
, int flush
);
728 void hammer_put_buffer(struct hammer_buffer
*buffer
, int flush
);
730 hammer_off_t
hammer_freemap_alloc(hammer_transaction_t trans
,
731 hammer_off_t owner
, int *errorp
);
732 void hammer_freemap_free(hammer_transaction_t trans
, hammer_off_t phys_offset
,
733 hammer_off_t owner
, int *errorp
);
734 hammer_off_t
hammer_blockmap_alloc(hammer_transaction_t trans
, int zone
,
735 int bytes
, int *errorp
);
736 void hammer_blockmap_free(hammer_transaction_t trans
,
737 hammer_off_t bmap_off
, int bytes
);
738 int hammer_blockmap_getfree(hammer_mount_t hmp
, hammer_off_t bmap_off
,
739 int *curp
, int *errorp
);
740 hammer_off_t
hammer_blockmap_lookup(hammer_mount_t hmp
, hammer_off_t bmap_off
,
742 hammer_off_t
hammer_undo_lookup(hammer_mount_t hmp
, hammer_off_t bmap_off
,
744 int64_t hammer_undo_space(hammer_mount_t hmp
);
745 int64_t hammer_undo_max(hammer_mount_t hmp
);
748 void hammer_start_transaction(struct hammer_transaction
*trans
,
749 struct hammer_mount
*hmp
);
750 void hammer_simple_transaction(struct hammer_transaction
*trans
,
751 struct hammer_mount
*hmp
);
752 void hammer_start_transaction_fls(struct hammer_transaction
*trans
,
753 struct hammer_mount
*hmp
);
754 void hammer_done_transaction(struct hammer_transaction
*trans
);
756 void hammer_modify_inode(struct hammer_transaction
*trans
,
757 hammer_inode_t ip
, int flags
);
758 void hammer_flush_inode(hammer_inode_t ip
, int flags
);
759 void hammer_flush_inode_done(hammer_inode_t ip
);
760 void hammer_wait_inode(hammer_inode_t ip
);
762 int hammer_create_inode(struct hammer_transaction
*trans
, struct vattr
*vap
,
763 struct ucred
*cred
, struct hammer_inode
*dip
,
764 struct hammer_inode
**ipp
);
765 void hammer_rel_inode(hammer_inode_t ip
, int flush
);
766 int hammer_sync_inode(hammer_inode_t ip
);
767 void hammer_test_inode(hammer_inode_t ip
);
769 int hammer_ip_add_directory(struct hammer_transaction
*trans
,
770 hammer_inode_t dip
, struct namecache
*ncp
,
772 int hammer_ip_del_directory(struct hammer_transaction
*trans
,
773 hammer_cursor_t cursor
, hammer_inode_t dip
,
775 int hammer_ip_add_record(struct hammer_transaction
*trans
,
776 hammer_record_t record
);
777 int hammer_ip_delete_range(hammer_cursor_t cursor
, hammer_inode_t ip
,
778 int64_t ran_beg
, int64_t ran_end
);
779 int hammer_ip_delete_range_all(hammer_cursor_t cursor
, hammer_inode_t ip
,
781 int hammer_ip_sync_data(hammer_cursor_t cursor
, hammer_inode_t ip
,
782 int64_t offset
, void *data
, int bytes
);
783 int hammer_ip_sync_record(hammer_transaction_t trans
, hammer_record_t rec
);
784 int hammer_ip_sync_record_cursor(hammer_cursor_t cursor
, hammer_record_t rec
);
786 int hammer_ioctl(hammer_inode_t ip
, u_long com
, caddr_t data
, int fflag
,
789 void hammer_io_init(hammer_io_t io
, hammer_mount_t hmp
,
790 enum hammer_io_type type
);
791 void hammer_io_reinit(hammer_io_t io
, enum hammer_io_type type
);
792 int hammer_io_read(struct vnode
*devvp
, struct hammer_io
*io
);
793 int hammer_io_new(struct vnode
*devvp
, struct hammer_io
*io
);
794 void hammer_io_release(struct hammer_io
*io
);
795 void hammer_io_flush(struct hammer_io
*io
);
796 int hammer_io_checkflush(hammer_io_t io
);
797 void hammer_io_clear_modify(struct hammer_io
*io
);
798 void hammer_io_waitdep(struct hammer_io
*io
);
800 void hammer_modify_volume(hammer_transaction_t trans
, hammer_volume_t volume
,
801 void *base
, int len
);
802 void hammer_modify_buffer(hammer_transaction_t trans
, hammer_buffer_t buffer
,
803 void *base
, int len
);
804 void hammer_modify_volume_done(hammer_volume_t volume
);
805 void hammer_modify_buffer_done(hammer_buffer_t buffer
);
807 int hammer_ioc_reblock(hammer_transaction_t trans
, hammer_inode_t ip
,
808 struct hammer_ioc_reblock
*reblock
);
810 void hammer_init_holes(hammer_mount_t hmp
, hammer_holes_t holes
);
811 void hammer_free_holes(hammer_mount_t hmp
, hammer_holes_t holes
);
812 int hammer_signal_check(hammer_mount_t hmp
);
814 void hammer_flusher_create(hammer_mount_t hmp
);
815 void hammer_flusher_destroy(hammer_mount_t hmp
);
816 void hammer_flusher_sync(hammer_mount_t hmp
);
817 void hammer_flusher_async(hammer_mount_t hmp
);
819 int hammer_recover(hammer_mount_t hmp
, hammer_volume_t rootvol
);
824 hammer_modify_node_noundo(hammer_transaction_t trans
, hammer_node_t node
)
826 hammer_modify_buffer(trans
, node
->buffer
, NULL
, 0);
830 hammer_modify_node_all(hammer_transaction_t trans
, struct hammer_node
*node
)
832 hammer_modify_buffer(trans
, node
->buffer
,
833 node
->ondisk
, sizeof(*node
->ondisk
));
837 hammer_modify_node(hammer_transaction_t trans
, hammer_node_t node
,
840 KKASSERT((char *)base
>= (char *)node
->ondisk
&&
841 (char *)base
+ len
<=
842 (char *)node
->ondisk
+ sizeof(*node
->ondisk
));
843 hammer_modify_buffer(trans
, node
->buffer
, base
, len
);
847 hammer_modify_node_done(hammer_node_t node
)
849 hammer_modify_buffer_done(node
->buffer
);
853 hammer_modify_record(hammer_transaction_t trans
, hammer_buffer_t buffer
,
856 KKASSERT((char *)base
>= (char *)buffer
->ondisk
&&
857 (char *)base
+ len
<= (char *)buffer
->ondisk
+ HAMMER_BUFSIZE
);
858 hammer_modify_buffer(trans
, buffer
, base
, len
);
862 hammer_modify_record_done(hammer_buffer_t buffer
)
864 hammer_modify_buffer_done(buffer
);