1 /* 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2022 Tomohiro Kusumi <tkusumi@netbsd.org> 5 * Copyright (c) 2011-2022 The DragonFly Project. All rights reserved. 6 * 7 * This code is derived from software contributed to The DragonFly Project 8 * by Matthew Dillon <dillon@dragonflybsd.org> 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 3. Neither the name of The DragonFly Project nor the names of its 21 * contributors may be used to endorse or promote products derived 22 * from this software without specific, prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 27 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 28 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 29 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 30 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 31 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 32 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 34 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38 /* 39 * HAMMER2 IN-MEMORY CACHE OF MEDIA STRUCTURES 40 * 41 * This header file contains structures used internally by the HAMMER2 42 * implementation. See hammer2_disk.h for on-disk structures. 43 * 44 * There is an in-memory representation of all on-media data structure. 45 * Almost everything is represented by a hammer2_chain structure in-memory. 46 * Other higher-level structures typically map to chains. 47 * 48 * A great deal of data is accessed simply via its buffer cache buffer, 49 * which is mapped for the duration of the chain's lock. Hammer2 must 50 * implement its own buffer cache layer on top of the system layer to 51 * allow for different threads to lock different sub-block-sized buffers. 52 * 53 * When modifications are made to a chain a new filesystem block must be 54 * allocated. Multiple modifications do not typically allocate new blocks 55 * until the current block has been flushed. Flushes do not block the 56 * front-end unless the front-end operation crosses the current inode being 57 * flushed. 58 * 59 * The in-memory representation may remain cached (for example in order to 60 * placemark clustering locks) even after the related data has been 61 * detached. 62 */ 63 64 #ifndef _VFS_HAMMER2_HAMMER2_H_ 65 #define _VFS_HAMMER2_HAMMER2_H_ 66 67 #ifdef _KERNEL 68 #error "_KERNEL shouldn't be defined" 69 #endif 70 #ifdef _KERNEL_STRUCTURES 71 #error "_KERNEL_STRUCTURES shouldn't be defined" 72 #endif 73 74 #ifdef _KERNEL 75 #include <sys/param.h> 76 #endif 77 #include <sys/types.h> 78 #ifdef _KERNEL 79 #include <sys/kernel.h> 80 #endif 81 //#include <sys/conf.h> 82 #ifdef _KERNEL 83 #include <sys/systm.h> 84 #endif 85 //#include <sys/diskslice.h> 86 #include <sys/tree.h> 87 //#include <sys/malloc.h> 88 #include <sys/mount.h> 89 /* 90 #include <sys/vnode.h> 91 #include <sys/proc.h> 92 #include <sys/caps.h> 93 #include <sys/stat.h> 94 #include <sys/thread.h> 95 #include <sys/lockf.h> 96 #include <sys/buf.h> 97 */ 98 #include <sys/queue.h> 99 /* 100 #include <sys/limits.h> 101 #include <sys/dmsg.h> 102 #include <sys/mutex.h> 103 #include <sys/lock.h> 104 #include <sys/file.h> 105 #include <sys/objcache.h> 106 */ 107 108 #ifdef _KERNEL 109 #include <sys/signal2.h> 110 #include <sys/buf2.h> 111 #include <sys/mutex2.h> 112 #include <sys/spinlock2.h> 113 #endif 114 115 /* 116 #include "hammer2_xxhash.h" 117 #include "hammer2_disk.h" 118 #include "hammer2_mount.h" 119 #include "hammer2_ioctl.h" 120 */ 121 122 #include <sys/time.h> 123 #include <sys/vfscache.h> 124 #include <sys/errno.h> 125 126 #include <machine/atomic.h> 127 128 #include <unistd.h> 129 #include <stdio.h> 130 #include <stdlib.h> 131 #include <stdint.h> 132 #include <stdbool.h> 133 #include <string.h> 134 #include <uuid.h> 135 136 #include <vfs/hammer2/hammer2_disk.h> 137 #include <vfs/hammer2/hammer2_ioctl.h> 138 #include <vfs/hammer2/hammer2_mount.h> 139 #include <vfs/hammer2/hammer2_xxhash.h> 140 #include <mkfs_hammer2.h> 141 142 #include "hammer2_compat.h" 143 144 struct hammer2_io; 145 struct hammer2_chain; 146 struct hammer2_inode; 147 struct hammer2_depend; 148 struct hammer2_dev; 149 struct hammer2_pfs; 150 union hammer2_xop; 151 152 /* 153 * Mutex and lock shims. Hammer2 requires support for asynchronous and 154 * abortable locks, and both exclusive and shared spinlocks. Normal 155 * synchronous non-abortable locks can be substituted for spinlocks. 156 */ 157 /* 158 typedef mtx_t hammer2_mtx_t; 159 typedef mtx_state_t hammer2_mtx_state_t; 160 161 typedef struct spinlock hammer2_spin_t; 162 163 #define hammer2_mtx_ex mtx_lock_ex_quick 164 #define hammer2_mtx_ex_try mtx_lock_ex_try 165 #define hammer2_mtx_sh mtx_lock_sh_quick 166 #define hammer2_mtx_sh_again mtx_lock_sh_again 167 #define hammer2_mtx_sh_try mtx_lock_sh_try 168 #define hammer2_mtx_unlock mtx_unlock 169 #define hammer2_mtx_upgrade_try mtx_upgrade_try 170 #define hammer2_mtx_downgrade mtx_downgrade 171 #define hammer2_mtx_owned mtx_owned 172 #define hammer2_mtx_init mtx_init 173 #define hammer2_mtx_temp_release mtx_lock_temp_release 174 #define hammer2_mtx_temp_restore mtx_lock_temp_restore 175 #define hammer2_mtx_refs mtx_lockrefs 176 177 #define hammer2_spin_init spin_init 178 #define hammer2_spin_sh spin_lock_shared 179 #define hammer2_spin_ex spin_lock 180 #define hammer2_spin_unsh spin_unlock_shared 181 #define hammer2_spin_unex spin_unlock 182 #define hammer2_spin_lock_update spin_lock_update 183 #define hammer2_spin_unlock_update spin_unlock_update 184 */ 185 186 TAILQ_HEAD(hammer2_xop_list, hammer2_xop_head); 187 TAILQ_HEAD(hammer2_chain_list, hammer2_chain); 188 189 typedef struct hammer2_xop_list hammer2_xop_list_t; 190 191 /* 192 * Cap the dynamic calculation for the maximum number of dirty 193 * chains and dirty inodes allowed. 194 */ 195 #define HAMMER2_LIMIT_DIRTY_CHAINS (1024*1024) 196 #define HAMMER2_LIMIT_DIRTY_INODES (65536) 197 198 #define HAMMER2_IOHASH_SIZE 32768 199 #define HAMMER2_IOHASH_MASK (HAMMER2_IOHASH_SIZE - 1) 200 201 #define HAMMER2_INUMHASH_SIZE 32768 202 #define HAMMER2_INUMHASH_MASK (HAMMER2_IOHASH_SIZE - 1) 203 204 /* 205 * The chain structure tracks a portion of the media topology from the 206 * root (volume) down. Chains represent volumes, inodes, indirect blocks, 207 * data blocks, and freemap nodes and leafs. 208 * 209 * The chain structure utilizes a simple singly-homed topology and the 210 * chain's in-memory topology will move around as the chains do, due mainly 211 * to renames and indirect block creation. 212 * 213 * Block Table Updates 214 * 215 * Block table updates for insertions and updates are delayed until the 216 * flush. This allows us to avoid having to modify the parent chain 217 * all the way to the root. 218 * 219 * Block table deletions are performed immediately (modifying the parent 220 * in the process) because the flush code uses the chain structure to 221 * track delayed updates and the chain will be (likely) gone or moved to 222 * another location in the topology after a deletion. 223 * 224 * A prior iteration of the code tried to keep the relationship intact 225 * on deletes by doing a delete-duplicate operation on the chain, but 226 * it added way too much complexity to the codebase. 227 * 228 * Flush Synchronization 229 * 230 * The flush code must flush modified chains bottom-up. Because chain 231 * structures can shift around and are NOT topologically stable, 232 * modified chains are independently indexed for the flush. As the flush 233 * runs it modifies (or further modifies) and updates the parents, 234 * propagating the flush all the way to the volume root. 235 * 236 * Modifying front-end operations can occur during a flush but will block 237 * in two cases: (1) when the front-end tries to operate on the inode 238 * currently in the midst of being flushed and (2) if the front-end 239 * crosses an inode currently being flushed (such as during a rename). 240 * So, for example, if you rename directory "x" to "a/b/c/d/e/f/g/x" and 241 * the flusher is currently working on "a/b/c", the rename will block 242 * temporarily in order to ensure that "x" exists in one place or the 243 * other. 244 * 245 * Meta-data statistics are updated by the flusher. The front-end will 246 * make estimates but meta-data must be fully synchronized only during a 247 * flush in order to ensure that it remains correct across a crash. 248 * 249 * Multiple flush synchronizations can theoretically be in-flight at the 250 * same time but the implementation is not coded to handle the case and 251 * currently serializes them. 252 * 253 * Snapshots: 254 * 255 * Snapshots currently require the subdirectory tree being snapshotted 256 * to be flushed. The snapshot then creates a new super-root inode which 257 * copies the flushed blockdata of the directory or file that was 258 * snapshotted. 259 * 260 * Radix tree NOTES: 261 * 262 * - Note that the radix tree runs in powers of 2 only so sub-trees 263 * cannot straddle edges. 264 */ 265 RB_HEAD(hammer2_chain_tree, hammer2_chain); 266 267 struct hammer2_reptrack { 268 hammer2_spin_t spin; 269 struct hammer2_reptrack *next; 270 struct hammer2_chain *chain; 271 }; 272 273 /* 274 * Core topology for chain (embedded in chain). Protected by a spinlock. 275 */ 276 struct hammer2_chain_core { 277 hammer2_spin_t spin; 278 struct hammer2_reptrack *reptrack; 279 struct hammer2_chain_tree rbtree; /* sub-chains */ 280 int live_zero; /* blockref array opt */ 281 u_int live_count; /* live (not deleted) chains in tree */ 282 u_int chain_count; /* live + deleted chains under core */ 283 int generation; /* generation number (inserts only) */ 284 }; 285 286 typedef struct hammer2_chain_core hammer2_chain_core_t; 287 288 /* 289 * DIO - Management structure wrapping system buffer cache. 290 * 291 * HAMMER2 uses an I/O abstraction that allows it to cache and manipulate 292 * fixed-sized filesystem buffers frontend by variable-sized hammer2_chain 293 * structures. 294 */ 295 /* #define HAMMER2_IO_DEBUG */ 296 297 #ifdef HAMMER2_IO_DEBUG 298 #define HAMMER2_IO_DEBUG_ARGS , const char *file, int line 299 #define HAMMER2_IO_DEBUG_CALL , file, line 300 #define HAMMER2_IO_DEBUG_COUNT 2048 301 #define HAMMER2_IO_DEBUG_MASK (HAMMER2_IO_DEBUG_COUNT - 1) 302 #else 303 #define HAMMER2_IO_DEBUG_ARGS 304 #define HAMMER2_IO_DEBUG_CALL 305 #endif 306 307 struct hammer2_io { 308 struct hammer2_io *next; 309 struct hammer2_dev *hmp; 310 struct m_vnode *devvp; 311 struct m_buf *bp; 312 off_t dbase; /* offset of devvp within volumes */ 313 off_t pbase; 314 uint64_t refs; 315 int psize; 316 int act; /* activity */ 317 int btype; /* approximate BREF_TYPE_* */ 318 int ticks; 319 int error; 320 #ifdef HAMMER2_IO_DEBUG 321 int debug_index; 322 #else 323 int unused01; 324 #endif 325 uint64_t dedup_valid; /* valid for dedup operation */ 326 uint64_t dedup_alloc; /* allocated / de-dupable */ 327 #ifdef HAMMER2_IO_DEBUG 328 const char *debug_file[HAMMER2_IO_DEBUG_COUNT]; 329 void *debug_td[HAMMER2_IO_DEBUG_COUNT]; 330 int debug_line[HAMMER2_IO_DEBUG_COUNT]; 331 uint64_t debug_refs[HAMMER2_IO_DEBUG_COUNT]; 332 #endif 333 }; 334 335 typedef struct hammer2_io hammer2_io_t; 336 337 struct hammer2_io_hash { 338 hammer2_spin_t spin; 339 struct hammer2_io *base; 340 }; 341 342 typedef struct hammer2_io_hash hammer2_io_hash_t; 343 344 #define HAMMER2_DIO_INPROG 0x8000000000000000LLU /* bio in progress */ 345 #define HAMMER2_DIO_GOOD 0x4000000000000000LLU /* dio->bp is stable */ 346 #define HAMMER2_DIO_WAITING 0x2000000000000000LLU /* wait on INPROG */ 347 #define HAMMER2_DIO_DIRTY 0x1000000000000000LLU /* flush last drop */ 348 #define HAMMER2_DIO_FLUSH 0x0800000000000000LLU /* immediate flush */ 349 350 #define HAMMER2_DIO_MASK 0x00FFFFFFFFFFFFFFLLU 351 352 struct hammer2_inum_hash { 353 hammer2_spin_t spin; 354 struct hammer2_inode *base; 355 }; 356 357 typedef struct hammer2_inum_hash hammer2_inum_hash_t; 358 359 /* 360 * Primary chain structure keeps track of the topology in-memory. 361 */ 362 struct hammer2_chain { 363 hammer2_mtx_t lock; 364 hammer2_chain_core_t core; 365 RB_ENTRY(hammer2_chain) rbnode; /* live chain(s) */ 366 hammer2_blockref_t bref; 367 struct hammer2_chain *parent; 368 struct hammer2_dev *hmp; 369 struct hammer2_pfs *pmp; /* A PFS or super-root (spmp) */ 370 371 struct lock diolk; /* xop focus interlock */ 372 hammer2_io_t *dio; /* physical data buffer */ 373 hammer2_media_data_t *data; /* data pointer shortcut */ 374 u_int bytes; /* physical data size */ 375 u_int flags; 376 u_int refs; 377 u_int lockcnt; 378 int error; /* on-lock data error state */ 379 int cache_index; /* heur speeds up lookup */ 380 381 TAILQ_ENTRY(hammer2_chain) lru_node; /* 0-refs LRU */ 382 }; 383 384 typedef struct hammer2_chain hammer2_chain_t; 385 386 int hammer2_chain_cmp(hammer2_chain_t *chain1, hammer2_chain_t *chain2); 387 RB_PROTOTYPE(hammer2_chain_tree, hammer2_chain, rbnode, hammer2_chain_cmp); 388 389 /* 390 * Passed to hammer2_chain_create(), causes methods to be inherited from 391 * parent. 392 */ 393 #define HAMMER2_METH_DEFAULT -1 394 395 /* 396 * Special notes on flags: 397 * 398 * INITIAL - This flag allows a chain to be created and for storage to 399 * be allocated without having to immediately instantiate the 400 * related buffer. The data is assumed to be all-zeros. It 401 * is primarily used for indirect blocks. 402 * 403 * MODIFIED - The chain's media data has been modified. Prevents chain 404 * free on lastdrop if still in the topology. 405 * 406 * UPDATE - Chain might not be modified but parent blocktable needs 407 * an update. Prevents chain free on lastdrop if still in 408 * the topology. 409 * 410 * BLKMAPPED - Indicates that the chain is present in the parent blockmap. 411 * 412 * BLKMAPUPD - Indicates that the chain is present but needs to be updated 413 * in the parent blockmap. 414 */ 415 #define HAMMER2_CHAIN_MODIFIED 0x00000001 /* dirty chain data */ 416 #define HAMMER2_CHAIN_ALLOCATED 0x00000002 /* kmalloc'd chain */ 417 #define HAMMER2_CHAIN_DESTROY 0x00000004 418 #define HAMMER2_CHAIN_DEDUPABLE 0x00000008 /* registered w/dedup */ 419 #define HAMMER2_CHAIN_DELETED 0x00000010 /* deleted chain */ 420 #define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */ 421 #define HAMMER2_CHAIN_UPDATE 0x00000040 /* need parent update */ 422 #define HAMMER2_CHAIN_NOTTESTED 0x00000080 /* crc not generated */ 423 #define HAMMER2_CHAIN_TESTEDGOOD 0x00000100 /* crc tested good */ 424 #define HAMMER2_CHAIN_ONFLUSH 0x00000200 /* on a flush list */ 425 #define HAMMER2_CHAIN_UNUSED0400 0x00000400 426 #define HAMMER2_CHAIN_VOLUMESYNC 0x00000800 /* needs volume sync */ 427 #define HAMMER2_CHAIN_UNUSED1000 0x00001000 428 #define HAMMER2_CHAIN_COUNTEDBREFS 0x00002000 /* block table stats */ 429 #define HAMMER2_CHAIN_ONRBTREE 0x00004000 /* on parent RB tree */ 430 #define HAMMER2_CHAIN_UNUSED8000 0x00008000 431 #define HAMMER2_CHAIN_UNUSED10000 0x00010000 432 #define HAMMER2_CHAIN_RELEASE 0x00020000 /* don't keep around */ 433 #define HAMMER2_CHAIN_BLKMAPPED 0x00040000 /* present in blkmap */ 434 #define HAMMER2_CHAIN_BLKMAPUPD 0x00080000 /* +needs updating */ 435 #define HAMMER2_CHAIN_IOINPROG 0x00100000 /* I/O interlock */ 436 #define HAMMER2_CHAIN_IOSIGNAL 0x00200000 /* I/O interlock */ 437 #define HAMMER2_CHAIN_PFSBOUNDARY 0x00400000 /* super->pfs inode */ 438 #define HAMMER2_CHAIN_HINT_LEAF_COUNT 0x00800000 /* redo leaf count */ 439 #define HAMMER2_CHAIN_UNUSED1000000 0x01000000 440 441 #define HAMMER2_CHAIN_FLUSH_MASK (HAMMER2_CHAIN_MODIFIED | \ 442 HAMMER2_CHAIN_UPDATE | \ 443 HAMMER2_CHAIN_ONFLUSH | \ 444 HAMMER2_CHAIN_DESTROY) 445 446 /* 447 * Hammer2 error codes, used by chain->error and cluster->error. The error 448 * code is typically set on-lock unless no I/O was requested, and set on 449 * I/O otherwise. If set for a cluster it generally means that the cluster 450 * code could not find a valid copy to present. 451 * 452 * All H2 error codes are flags and can be accumulated by ORing them 453 * together. 454 * 455 * IO - An I/O error occurred 456 * CHECK - I/O succeeded but did not match the check code 457 * INCOMPLETE - A cluster is not complete enough to use, or 458 * a chain cannot be loaded because its parent has an error. 459 * 460 * NOTE: API allows callers to check zero/non-zero to determine if an error 461 * condition exists. 462 * 463 * NOTE: Chain's data field is usually NULL on an IO error but not necessarily 464 * NULL on other errors. Check chain->error, not chain->data. 465 */ 466 #define HAMMER2_ERROR_NONE 0 /* no error (must be 0) */ 467 #define HAMMER2_ERROR_EIO 0x00000001 /* device I/O error */ 468 #define HAMMER2_ERROR_CHECK 0x00000002 /* check code error */ 469 #define HAMMER2_ERROR_INCOMPLETE 0x00000004 /* incomplete cluster */ 470 #define HAMMER2_ERROR_DEPTH 0x00000008 /* tmp depth limit */ 471 #define HAMMER2_ERROR_BADBREF 0x00000010 /* illegal bref */ 472 #define HAMMER2_ERROR_ENOSPC 0x00000020 /* allocation failure */ 473 #define HAMMER2_ERROR_ENOENT 0x00000040 /* entry not found */ 474 #define HAMMER2_ERROR_ENOTEMPTY 0x00000080 /* dir not empty */ 475 #define HAMMER2_ERROR_EAGAIN 0x00000100 /* retry */ 476 #define HAMMER2_ERROR_ENOTDIR 0x00000200 /* not directory */ 477 #define HAMMER2_ERROR_EISDIR 0x00000400 /* is directory */ 478 #define HAMMER2_ERROR_EINPROGRESS 0x00000800 /* already running */ 479 #define HAMMER2_ERROR_ABORTED 0x00001000 /* aborted operation */ 480 #define HAMMER2_ERROR_EOF 0x00002000 /* end of scan */ 481 #define HAMMER2_ERROR_EINVAL 0x00004000 /* catch-all */ 482 #define HAMMER2_ERROR_EEXIST 0x00008000 /* entry exists */ 483 #define HAMMER2_ERROR_EDEADLK 0x00010000 484 #define HAMMER2_ERROR_ESRCH 0x00020000 485 #define HAMMER2_ERROR_ETIMEDOUT 0x00040000 486 487 /* 488 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next() 489 * 490 * NOTES: 491 * NODATA - Asks that the chain->data not be resolved in order 492 * to avoid I/O. 493 * 494 * NODIRECT - Prevents a lookup of offset 0 in an inode from returning 495 * the inode itself if the inode is in DIRECTDATA mode 496 * (i.e. file is <= 512 bytes). Used by the synchronization 497 * code to prevent confusion. 498 * 499 * SHARED - The input chain is expected to be locked shared, 500 * and the output chain is locked shared. 501 * 502 * MATCHIND - Allows an indirect block / freemap node to be returned 503 * when the passed key range matches the radix. Remember 504 * that key_end is inclusive (e.g. {0x000,0xFFF}, 505 * not {0x000,0x1000}). 506 * 507 * (Cannot be used for remote or cluster ops). 508 * 509 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both 510 * missing, bulk file data is not resolved but inodes and 511 * other meta-data will. 512 */ 513 #define HAMMER2_LOOKUP_UNUSED0001 0x00000001 514 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */ 515 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */ 516 #define HAMMER2_LOOKUP_SHARED 0x00000100 517 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */ 518 #define HAMMER2_LOOKUP_UNUSED0400 0x00000400 519 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */ 520 #define HAMMER2_LOOKUP_UNUSED1000 0x00001000 521 522 /* 523 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize() 524 * 525 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT 526 * blocks in the INITIAL-create state. 527 */ 528 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */ 529 530 /* 531 * Flags passed to hammer2_chain_lock() 532 * 533 * NOTE: NONBLOCK is only used for hammer2_chain_repparent() and getparent(), 534 * other functions (e.g. hammer2_chain_lookup(), etc) can't handle its 535 * operation. 536 */ 537 #define HAMMER2_RESOLVE_NEVER 1 538 #define HAMMER2_RESOLVE_MAYBE 2 539 #define HAMMER2_RESOLVE_ALWAYS 3 540 #define HAMMER2_RESOLVE_MASK 0x0F 541 542 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */ 543 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */ 544 #define HAMMER2_RESOLVE_UNUSED40 0x40 545 #define HAMMER2_RESOLVE_NONBLOCK 0x80 /* non-blocking */ 546 547 /* 548 * Flags passed to hammer2_chain_delete() 549 */ 550 #define HAMMER2_DELETE_PERMANENT 0x0001 551 552 /* 553 * Flags passed to hammer2_chain_insert() or hammer2_chain_rename() 554 * or hammer2_chain_create(). 555 */ 556 #define HAMMER2_INSERT_PFSROOT 0x0004 557 #define HAMMER2_INSERT_SAMEPARENT 0x0008 558 559 /* 560 * hammer2_freemap_adjust() 561 */ 562 #define HAMMER2_FREEMAP_DORECOVER 1 563 #if 0 564 #define HAMMER2_FREEMAP_DOMAYFREE 2 565 #define HAMMER2_FREEMAP_DOREALFREE 3 566 #endif 567 568 /* 569 * HAMMER2 cluster - A set of chains representing the same entity. 570 * 571 * hammer2_cluster typically represents a temporary set of representitive 572 * chains. The one exception is that a hammer2_cluster is embedded in 573 * hammer2_inode. This embedded cluster is ONLY used to track the 574 * representitive chains and cannot be directly locked. 575 * 576 * A cluster is usually temporary (and thus per-thread) for locking purposes, 577 * allowing us to embed the asynchronous storage required for cluster 578 * operations in the cluster itself and adjust the state and status without 579 * having to worry too much about SMP issues. 580 * 581 * The exception is the cluster embedded in the hammer2_inode structure. 582 * This is used to cache the cluster state on an inode-by-inode basis. 583 * Individual hammer2_chain structures not incorporated into clusters might 584 * also stick around to cache miscellanious elements. 585 * 586 * Because the cluster is a 'working copy' and is usually subject to cluster 587 * quorum rules, it is quite possible for us to end up with an insufficient 588 * number of live chains to execute an operation. If an insufficient number 589 * of chains remain in a working copy, the operation may have to be 590 * downgraded, retried, stall until the requisit number of chains are 591 * available, or possibly even error out depending on the mount type. 592 * 593 * A cluster's focus is set when it is locked. The focus can only be set 594 * to a chain still part of the synchronized set. 595 */ 596 #define HAMMER2_XOPFIFO 16 597 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1) 598 #define HAMMER2_XOPTHREADS_MIN 32 599 #define HAMMER2_XOPGROUPS_MIN 4 600 601 #define HAMMER2_MAXCLUSTER 8 602 #define HAMMER2_XOPMASK_CLUSTER ((uint64_t)((1LLU << HAMMER2_MAXCLUSTER) - 1)) 603 #define HAMMER2_XOPMASK_VOP ((uint64_t)0x0000000080000000LLU) 604 #define HAMMER2_XOPMASK_FIFOW ((uint64_t)0x0000000040000000LLU) 605 #define HAMMER2_XOPMASK_WAIT ((uint64_t)0x0000000020000000LLU) 606 #define HAMMER2_XOPMASK_FEED ((uint64_t)0x0000000100000000LLU) 607 608 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER) 609 610 struct hammer2_cluster_item { 611 hammer2_chain_t *chain; 612 int error; 613 uint32_t flags; 614 }; 615 616 typedef struct hammer2_cluster_item hammer2_cluster_item_t; 617 618 /* 619 * INVALID - Invalid for focus, i.e. not part of synchronized set. 620 * Once set, this bit is sticky across operations. 621 * 622 * FEMOD - Indicates that front-end modifying operations can 623 * mess with this entry and MODSYNC will copy also 624 * effect it. 625 */ 626 #define HAMMER2_CITEM_INVALID 0x00000001 627 #define HAMMER2_CITEM_FEMOD 0x00000002 628 #define HAMMER2_CITEM_NULL 0x00000004 629 630 struct hammer2_cluster { 631 int refs; /* track for deallocation */ 632 int ddflag; 633 struct hammer2_pfs *pmp; 634 uint32_t flags; 635 int nchains; 636 int error; /* error code valid on lock */ 637 int focus_index; 638 hammer2_chain_t *focus; /* current focus (or mod) */ 639 hammer2_cluster_item_t array[HAMMER2_MAXCLUSTER]; 640 }; 641 642 typedef struct hammer2_cluster hammer2_cluster_t; 643 644 /* 645 * WRHARD - Hard mounts can write fully synchronized 646 * RDHARD - Hard mounts can read fully synchronized 647 * UNHARD - Unsynchronized masters present 648 * NOHARD - No masters visible 649 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER 650 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE 651 * UNSOFT - Unsynchronized slaves present 652 * NOSOFT - No slaves visible 653 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote). 654 * MSYNCED - All masters are fully synchronized 655 * SSYNCED - All known local slaves are fully synchronized to masters 656 * 657 * All available masters are always incorporated. All PFSs belonging to a 658 * cluster (master, slave, copy, whatever) always try to synchronize the 659 * total number of known masters in the PFSs root inode. 660 * 661 * A cluster might have access to many slaves, copies, or caches, but we 662 * have a limited number of cluster slots. Any such elements which are 663 * directly mounted from block device(s) will always be incorporated. Note 664 * that SSYNCED only applies to such elements which are directly mounted, 665 * not to any remote slaves, copies, or caches that could be available. These 666 * bits are used to monitor and drive our synchronization threads. 667 * 668 * When asking the question 'is any data accessible at all', then a simple 669 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of 670 * these bits are set the object can be read with certain caveats: 671 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized. 672 * and RDSLAVE - not authoritative, has some data but it could be old or 673 * incomplete. 674 * 675 * When both soft and hard mounts are available, data will be read and written 676 * via the soft mount only. But all might be in the cluster because 677 * background synchronization threads still need to do their work. 678 */ 679 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */ 680 #define HAMMER2_CLUSTER_UNUSED2 0x00000002 681 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */ 682 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */ 683 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */ 684 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */ 685 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */ 686 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */ 687 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */ 688 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */ 689 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */ 690 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */ 691 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */ 692 693 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \ 694 HAMMER2_CLUSTER_RDSOFT | \ 695 HAMMER2_CLUSTER_RDSLAVE) 696 #if 0 697 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \ 698 HAMMER2_CLUSTER_RDSOFT) 699 700 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \ 701 HAMMER2_CLUSTER_WRSOFT) 702 #endif 703 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \ 704 HAMMER2_CLUSTER_RDHARD | \ 705 HAMMER2_CLUSTER_WRSOFT | \ 706 HAMMER2_CLUSTER_RDSOFT | \ 707 HAMMER2_CLUSTER_MSYNCED | \ 708 HAMMER2_CLUSTER_SSYNCED) 709 710 TAILQ_HEAD(inoq_head, hammer2_inode); /* ip->entry */ 711 TAILQ_HEAD(depq_head, hammer2_depend); /* depend->entry */ 712 TAILQ_HEAD(recq_head, hammer2_inode); /* ip->recq_entry */ 713 714 struct hammer2_depend { 715 TAILQ_ENTRY(hammer2_depend) entry; 716 struct inoq_head sideq; 717 long count; 718 int pass2; 719 int unused01; 720 }; 721 722 typedef struct hammer2_depend hammer2_depend_t; 723 724 /* 725 * A hammer2 inode. 726 * 727 * NOTE: The inode-embedded cluster is never used directly for I/O (since 728 * it may be shared). Instead it will be replicated-in and synchronized 729 * back out if changed. 730 */ 731 struct hammer2_inode { 732 struct hammer2_inode *next; /* inode tree */ 733 TAILQ_ENTRY(hammer2_inode) entry; /* SYNCQ/SIDEQ */ 734 TAILQ_ENTRY(hammer2_inode) recq_entry; /* makefs */ 735 hammer2_depend_t *depend; /* non-NULL if SIDEQ */ 736 hammer2_depend_t depend_static; /* (in-place allocation) */ 737 hammer2_mtx_t lock; /* inode lock */ 738 hammer2_mtx_t truncate_lock; /* prevent truncates */ 739 struct hammer2_pfs *pmp; /* PFS mount */ 740 struct m_vnode *vp; 741 hammer2_spin_t cluster_spin; /* update cluster */ 742 hammer2_cluster_t cluster; 743 hammer2_cluster_item_t ccache[HAMMER2_MAXCLUSTER]; 744 int ccache_nchains; 745 //struct lockf advlock; 746 u_int flags; 747 u_int refs; /* +vpref, +flushref */ 748 int ihash; /* xop worker distribution */ 749 uint8_t comp_heuristic; 750 hammer2_inode_meta_t meta; /* copy of meta-data */ 751 hammer2_off_t osize; 752 }; 753 754 typedef struct hammer2_inode hammer2_inode_t; 755 756 /* 757 * MODIFIED - Inode is in a modified state, ip->meta may have changes. 758 * RESIZED - Inode truncated (any) or inode extended beyond 759 * EMBEDDED_BYTES. 760 * 761 * SYNCQ - Inode is included in the current filesystem sync. The 762 * DELETING and CREATING flags will be acted upon. 763 * 764 * SIDEQ - Inode has likely been disconnected from the vnode topology 765 * and so is not visible to the vnode-based filesystem syncer 766 * code, but is dirty and must be included in the next 767 * filesystem sync. These inodes are moved to the SYNCQ at 768 * the time the sync occurs. 769 * 770 * Inodes are not placed on this queue simply because they have 771 * become dirty, if a vnode is attached. 772 * 773 * DELETING - Inode is flagged for deletion during the next filesystem 774 * sync. That is, the inode's chain is currently connected 775 * and must be deleting during the current or next fs sync. 776 * 777 * CREATING - Inode is flagged for creation during the next filesystem 778 * sync. That is, the inode's chain topology exists (so 779 * kernel buffer flushes can occur), but is currently 780 * disconnected and must be inserted during the current or 781 * next fs sync. If the DELETING flag is also set, the 782 * topology can be thrown away instead. 783 * 784 * If an inode that is already part of the current filesystem sync is 785 * modified by the frontend, including by buffer flushes, the inode lock 786 * code detects the SYNCQ flag and moves the inode to the head of the 787 * flush-in-progress, then blocks until the flush has gotten past it. 788 */ 789 #define HAMMER2_INODE_MODIFIED 0x0001 790 #define HAMMER2_INODE_UNUSED0002 0x0002 791 #define HAMMER2_INODE_UNUSED0004 0x0004 792 #define HAMMER2_INODE_ONHASH 0x0008 793 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_chain_sync */ 794 #define HAMMER2_INODE_UNUSED0020 0x0020 795 #define HAMMER2_INODE_ISUNLINKED 0x0040 796 #define HAMMER2_INODE_UNUSED0080 0x0080 797 #define HAMMER2_INODE_SIDEQ 0x0100 /* on side processing queue */ 798 #define HAMMER2_INODE_NOSIDEQ 0x0200 /* disable sideq operation */ 799 #define HAMMER2_INODE_DIRTYDATA 0x0400 /* interlocks inode flush */ 800 #define HAMMER2_INODE_SYNCQ 0x0800 /* sync interlock, sequenced */ 801 #define HAMMER2_INODE_DELETING 0x1000 /* sync interlock, chain topo */ 802 #define HAMMER2_INODE_CREATING 0x2000 /* sync interlock, chain topo */ 803 #define HAMMER2_INODE_SYNCQ_WAKEUP 0x4000 /* sync interlock wakeup */ 804 #define HAMMER2_INODE_SYNCQ_PASS2 0x8000 /* force retry delay */ 805 806 #define HAMMER2_INODE_DIRTY (HAMMER2_INODE_MODIFIED | \ 807 HAMMER2_INODE_DIRTYDATA | \ 808 HAMMER2_INODE_DELETING | \ 809 HAMMER2_INODE_CREATING) 810 811 /* 812 * Transaction management sub-structure under hammer2_pfs 813 */ 814 struct hammer2_trans { 815 uint32_t flags; 816 uint32_t sync_wait; 817 }; 818 819 typedef struct hammer2_trans hammer2_trans_t; 820 821 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */ 822 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */ 823 #define HAMMER2_TRANS_SIDEQ 0x20000000 /* run sideq */ 824 #define HAMMER2_TRANS_UNUSED10 0x10000000 825 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */ 826 #define HAMMER2_TRANS_RESCAN 0x04000000 /* rescan sideq */ 827 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */ 828 829 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-LBUFRADIX */ 830 #define HAMMER2_FREEMAP_HEUR_TYPES 8 831 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \ 832 HAMMER2_FREEMAP_HEUR_TYPES) 833 834 #define HAMMER2_DEDUP_HEUR_SIZE (65536 * 4) 835 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1) 836 837 #define HAMMER2_FLUSH_TOP 0x0001 838 #define HAMMER2_FLUSH_ALL 0x0002 839 #define HAMMER2_FLUSH_INODE_STOP 0x0004 /* stop at sub-inode */ 840 #define HAMMER2_FLUSH_FSSYNC 0x0008 /* part of filesystem sync */ 841 842 843 /* 844 * Hammer2 support thread element. 845 * 846 * Potentially many support threads can hang off of hammer2, primarily 847 * off the hammer2_pfs structure. Typically: 848 * 849 * td x Nodes A synchronization thread for each node. 850 * td x Nodes x workers Worker threads for frontend operations. 851 * td x 1 Bioq thread for logical buffer writes. 852 * 853 * In addition, the synchronization thread(s) associated with the 854 * super-root PFS (spmp) for a node is responsible for automatic bulkfree 855 * and dedup scans. 856 */ 857 struct hammer2_thread { 858 struct hammer2_pfs *pmp; 859 struct hammer2_dev *hmp; 860 hammer2_xop_list_t xopq; 861 thread_t td; 862 uint32_t flags; 863 int clindex; /* cluster element index */ 864 int repidx; 865 char *scratch; /* MAXPHYS */ 866 }; 867 868 typedef struct hammer2_thread hammer2_thread_t; 869 870 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */ 871 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */ 872 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */ 873 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */ 874 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */ 875 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */ 876 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */ 877 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */ 878 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */ 879 #define HAMMER2_THREAD_UNFREEZE 0x0200 880 881 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \ 882 HAMMER2_THREAD_REMASTER | \ 883 HAMMER2_THREAD_STOP | \ 884 HAMMER2_THREAD_FREEZE | \ 885 HAMMER2_THREAD_XOPQ) 886 887 /* 888 * Support structure for dedup heuristic. 889 */ 890 struct hammer2_dedup { 891 hammer2_off_t data_off; 892 uint64_t data_crc; 893 uint32_t ticks; 894 uint32_t saved_error; 895 }; 896 897 typedef struct hammer2_dedup hammer2_dedup_t; 898 899 /* 900 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack). 901 * 902 * This structure is used to distribute a VOP operation across multiple 903 * nodes. It provides a rendezvous for concurrent node execution and 904 * can be detached from the frontend operation to allow the frontend to 905 * return early. 906 * 907 * This structure also sequences operations on up to three inodes. 908 */ 909 typedef void (*hammer2_xop_func_t)(union hammer2_xop *xop, void *scratch, 910 int clindex); 911 912 struct hammer2_xop_desc { 913 hammer2_xop_func_t storage_func; /* local storage function */ 914 hammer2_xop_func_t dmsg_dispatch; /* dmsg dispatch function */ 915 hammer2_xop_func_t dmsg_process; /* dmsg processing function */ 916 const char *id; 917 }; 918 919 typedef struct hammer2_xop_desc hammer2_xop_desc_t; 920 921 struct hammer2_xop_fifo { 922 TAILQ_ENTRY(hammer2_xop_head) entry; 923 hammer2_chain_t **array; 924 int *errors; 925 int ri; 926 int wi; 927 int flags; 928 hammer2_thread_t *thr; 929 }; 930 931 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t; 932 933 #define HAMMER2_XOP_FIFO_RUN 0x0001 934 #define HAMMER2_XOP_FIFO_STALL 0x0002 935 936 struct hammer2_xop_head { 937 hammer2_xop_desc_t *desc; 938 hammer2_tid_t mtid; 939 struct hammer2_inode *ip1; 940 struct hammer2_inode *ip2; 941 struct hammer2_inode *ip3; 942 struct hammer2_inode *ip4; 943 uint64_t run_mask; 944 uint64_t chk_mask; 945 int fifo_size; 946 int flags; 947 int state; 948 int error; 949 hammer2_key_t collect_key; 950 char *name1; 951 size_t name1_len; 952 char *name2; 953 size_t name2_len; 954 hammer2_xop_fifo_t collect[HAMMER2_MAXCLUSTER]; 955 hammer2_cluster_t cluster; /* help collections */ 956 hammer2_io_t *focus_dio; 957 }; 958 959 typedef struct hammer2_xop_head hammer2_xop_head_t; 960 961 #define fifo_mask(xop_head) ((xop_head)->fifo_size - 1) 962 963 struct hammer2_xop_ipcluster { 964 hammer2_xop_head_t head; 965 }; 966 967 struct hammer2_xop_strategy { 968 hammer2_xop_head_t head; 969 hammer2_key_t lbase; 970 int finished; 971 hammer2_mtx_t lock; 972 struct bio *bio; 973 }; 974 975 struct hammer2_xop_readdir { 976 hammer2_xop_head_t head; 977 hammer2_key_t lkey; 978 }; 979 980 struct hammer2_xop_nresolve { 981 hammer2_xop_head_t head; 982 hammer2_key_t lhc; /* if name is NULL used lhc */ 983 }; 984 985 struct hammer2_xop_unlink { 986 hammer2_xop_head_t head; 987 int isdir; 988 int dopermanent; 989 }; 990 991 #define H2DOPERM_PERMANENT 0x01 992 #define H2DOPERM_FORCE 0x02 993 #define H2DOPERM_IGNINO 0x04 994 995 struct hammer2_xop_nrename { 996 hammer2_xop_head_t head; 997 hammer2_tid_t lhc; 998 int ip_key; 999 }; 1000 1001 struct hammer2_xop_scanlhc { 1002 hammer2_xop_head_t head; 1003 hammer2_key_t lhc; 1004 }; 1005 1006 struct hammer2_xop_scanall { 1007 hammer2_xop_head_t head; 1008 hammer2_key_t key_beg; /* inclusive */ 1009 hammer2_key_t key_end; /* inclusive */ 1010 int resolve_flags; 1011 int lookup_flags; 1012 }; 1013 1014 struct hammer2_xop_lookup { 1015 hammer2_xop_head_t head; 1016 hammer2_key_t lhc; 1017 }; 1018 1019 struct hammer2_xop_mkdirent { 1020 hammer2_xop_head_t head; 1021 hammer2_dirent_head_t dirent; 1022 hammer2_key_t lhc; 1023 }; 1024 1025 struct hammer2_xop_create { 1026 hammer2_xop_head_t head; 1027 hammer2_inode_meta_t meta; /* initial metadata */ 1028 hammer2_key_t lhc; 1029 int flags; 1030 }; 1031 1032 struct hammer2_xop_destroy { 1033 hammer2_xop_head_t head; 1034 }; 1035 1036 struct hammer2_xop_fsync { 1037 hammer2_xop_head_t head; 1038 hammer2_inode_meta_t meta; 1039 hammer2_off_t osize; 1040 u_int ipflags; 1041 int clear_directdata; 1042 }; 1043 1044 struct hammer2_xop_unlinkall { 1045 hammer2_xop_head_t head; 1046 hammer2_key_t key_beg; 1047 hammer2_key_t key_end; 1048 }; 1049 1050 struct hammer2_xop_connect { 1051 hammer2_xop_head_t head; 1052 hammer2_key_t lhc; 1053 }; 1054 1055 struct hammer2_xop_flush { 1056 hammer2_xop_head_t head; 1057 }; 1058 1059 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t; 1060 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t; 1061 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t; 1062 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t; 1063 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t; 1064 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t; 1065 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t; 1066 typedef struct hammer2_xop_create hammer2_xop_create_t; 1067 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t; 1068 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t; 1069 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t; 1070 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t; 1071 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t; 1072 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t; 1073 typedef struct hammer2_xop_connect hammer2_xop_connect_t; 1074 typedef struct hammer2_xop_flush hammer2_xop_flush_t; 1075 1076 union hammer2_xop { 1077 hammer2_xop_head_t head; 1078 hammer2_xop_ipcluster_t xop_ipcluster; 1079 hammer2_xop_readdir_t xop_readdir; 1080 hammer2_xop_nresolve_t xop_nresolve; 1081 hammer2_xop_unlink_t xop_unlink; 1082 hammer2_xop_nrename_t xop_nrename; 1083 hammer2_xop_strategy_t xop_strategy; 1084 hammer2_xop_mkdirent_t xop_mkdirent; 1085 hammer2_xop_create_t xop_create; 1086 hammer2_xop_destroy_t xop_destroy; 1087 hammer2_xop_fsync_t xop_fsync; 1088 hammer2_xop_unlinkall_t xop_unlinkall; 1089 hammer2_xop_scanlhc_t xop_scanlhc; 1090 hammer2_xop_scanall_t xop_scanall; 1091 hammer2_xop_lookup_t xop_lookup; 1092 hammer2_xop_flush_t xop_flush; 1093 hammer2_xop_connect_t xop_connect; 1094 }; 1095 1096 typedef union hammer2_xop hammer2_xop_t; 1097 1098 /* 1099 * hammer2_xop_group - Manage XOP support threads. 1100 */ 1101 struct hammer2_xop_group { 1102 hammer2_thread_t thrs[HAMMER2_MAXCLUSTER]; 1103 }; 1104 1105 typedef struct hammer2_xop_group hammer2_xop_group_t; 1106 1107 /* 1108 * flags to hammer2_xop_collect() 1109 */ 1110 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001 1111 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002 1112 1113 /* 1114 * flags to hammer2_xop_alloc() 1115 * 1116 * MODIFYING - This is a modifying transaction, allocate a mtid. 1117 */ 1118 #define HAMMER2_XOP_MODIFYING 0x00000001 1119 #define HAMMER2_XOP_STRATEGY 0x00000002 1120 #define HAMMER2_XOP_INODE_STOP 0x00000004 1121 #define HAMMER2_XOP_VOLHDR 0x00000008 1122 #define HAMMER2_XOP_FSSYNC 0x00000010 1123 1124 /* 1125 * Device vnode management structure 1126 */ 1127 struct hammer2_devvp { 1128 TAILQ_ENTRY(hammer2_devvp) entry; 1129 struct m_vnode *devvp; /* device vnode */ 1130 char *path; /* device vnode path */ 1131 int open; /* 1 if devvp open */ 1132 }; 1133 1134 typedef struct hammer2_devvp hammer2_devvp_t; 1135 1136 TAILQ_HEAD(hammer2_devvp_list, hammer2_devvp); 1137 1138 typedef struct hammer2_devvp_list hammer2_devvp_list_t; 1139 1140 /* 1141 * Volume management structure 1142 */ 1143 struct hammer2_vfsvolume { 1144 hammer2_devvp_t *dev; /* device vnode management */ 1145 int id; /* volume id */ 1146 hammer2_off_t offset; /* offset within volumes */ 1147 hammer2_off_t size; /* volume size */ 1148 }; 1149 1150 typedef struct hammer2_vfsvolume hammer2_vfsvolume_t; 1151 1152 /* 1153 * Global (per partition) management structure, represents a hard block 1154 * device. Typically referenced by hammer2_chain structures when applicable. 1155 * Typically not used for network-managed elements. 1156 * 1157 * Note that a single hammer2_dev can be indirectly tied to multiple system 1158 * mount points. There is no direct relationship. System mounts are 1159 * per-cluster-id, not per-block-device, and a single hard mount might contain 1160 * many PFSs and those PFSs might combine together in various ways to form 1161 * the set of available clusters. 1162 */ 1163 struct hammer2_dev { 1164 struct m_vnode *devvp; /* device vnode for root volume */ 1165 int ronly; /* read-only mount */ 1166 int mount_count; /* number of actively mounted PFSs */ 1167 TAILQ_ENTRY(hammer2_dev) mntentry; /* hammer2_mntlist */ 1168 1169 struct malloc_type *mchain_obj; 1170 struct malloc_type *mio_obj; 1171 struct malloc_type *mmsg; 1172 //kdmsg_iocom_t iocom; /* volume-level dmsg interface */ 1173 hammer2_io_hash_t iohash[HAMMER2_IOHASH_SIZE]; 1174 int iofree_count; 1175 int io_iterator; 1176 int freemap_relaxed; 1177 int unused01; 1178 hammer2_chain_t vchain; /* anchor chain (topology) */ 1179 hammer2_chain_t fchain; /* anchor chain (freemap) */ 1180 hammer2_spin_t list_spin; 1181 struct hammer2_pfs *spmp; /* super-root pmp for transactions */ 1182 struct lock vollk; /* lockmgr lock */ 1183 struct lock bulklk; /* bulkfree operation lock */ 1184 struct lock bflock; /* bulk-free manual function lock */ 1185 hammer2_off_t heur_freemap[HAMMER2_FREEMAP_HEUR_SIZE]; 1186 hammer2_dedup_t heur_dedup[HAMMER2_DEDUP_HEUR_SIZE]; 1187 int volhdrno; /* last volhdrno written */ 1188 uint32_t hflags; /* HMNT2 flags applicable to device */ 1189 hammer2_off_t free_reserved; /* nominal free reserved */ 1190 hammer2_off_t total_size; /* total size of volumes */ 1191 int nvolumes; /* total number of volumes */ 1192 hammer2_thread_t bfthr; /* bulk-free thread */ 1193 char devrepname[64]; /* for kprintf */ 1194 hammer2_volume_data_t voldata; 1195 hammer2_volume_data_t volsync; /* synchronized voldata */ 1196 1197 hammer2_devvp_list_t devvpl; /* list of device vnodes including *devvp */ 1198 hammer2_vfsvolume_t volumes[HAMMER2_MAX_VOLUMES]; /* list of volumes */ 1199 }; 1200 1201 typedef struct hammer2_dev hammer2_dev_t; 1202 1203 /* 1204 * Per-cluster management structure. This structure will be tied to a 1205 * system mount point if the system is mounting the PFS, but is also used 1206 * to manage clusters encountered during the super-root scan or received 1207 * via LNK_SPANs that might not be mounted. 1208 * 1209 * This structure is also used to represent the super-root that hangs off 1210 * of a hard mount point. The super-root is not really a cluster element. 1211 * In this case the spmp_hmp field will be non-NULL. It's just easier to do 1212 * this than to special case super-root manipulation in the hammer2_chain* 1213 * code as being only hammer2_dev-related. 1214 * 1215 * pfs_mode and pfs_nmasters are rollup fields which critically describes 1216 * how elements of the cluster act on the cluster. pfs_mode is only applicable 1217 * when a PFS is mounted by the system. pfs_nmasters is our best guess as to 1218 * how many masters have been configured for a cluster and is always 1219 * applicable. pfs_types[] is an array with 1:1 correspondance to the 1220 * iroot cluster and describes the PFS types of the nodes making up the 1221 * cluster. 1222 * 1223 * WARNING! Portions of this structure have deferred initialization. In 1224 * particular, if not mounted there will be no wthread. 1225 * umounted network PFSs will also be missing iroot and numerous 1226 * other fields will not be initialized prior to mount. 1227 * 1228 * Synchronization threads are chain-specific and only applicable 1229 * to local hard PFS entries. A hammer2_pfs structure may contain 1230 * more than one when multiple hard PFSs are present on the local 1231 * machine which require synchronization monitoring. Most PFSs 1232 * (such as snapshots) are 1xMASTER PFSs which do not need a 1233 * synchronization thread. 1234 * 1235 * WARNING! The chains making up pfs->iroot's cluster are accounted for in 1236 * hammer2_dev->mount_count when the pfs is associated with a mount 1237 * point. 1238 */ 1239 struct hammer2_pfs { 1240 struct mount *mp; 1241 TAILQ_ENTRY(hammer2_pfs) mntentry; /* hammer2_pfslist */ 1242 uuid_t pfs_clid; 1243 hammer2_dev_t *spmp_hmp; /* only if super-root pmp */ 1244 hammer2_dev_t *force_local; /* only if 'local' mount */ 1245 hammer2_inode_t *iroot; /* PFS root inode */ 1246 uint8_t pfs_types[HAMMER2_MAXCLUSTER]; 1247 char *pfs_names[HAMMER2_MAXCLUSTER]; 1248 hammer2_dev_t *pfs_hmps[HAMMER2_MAXCLUSTER]; 1249 hammer2_blockset_t pfs_iroot_blocksets[HAMMER2_MAXCLUSTER]; 1250 hammer2_spin_t blockset_spin; 1251 hammer2_trans_t trans; 1252 struct lock lock; /* PFS lock for certain ops */ 1253 //struct netexport export; /* nfs export */ 1254 int unused00; 1255 int ronly; /* read-only mount */ 1256 int hflags; /* pfs-specific mount flags */ 1257 struct malloc_type *minode_obj; 1258 /* note: inumhash not applicable to spmp */ 1259 hammer2_inum_hash_t inumhash[HAMMER2_INUMHASH_SIZE]; 1260 long inum_count; /* #of inodes in inumhash */ 1261 int flags; 1262 hammer2_tid_t modify_tid; /* modify transaction id */ 1263 hammer2_tid_t inode_tid; /* inode allocator */ 1264 uint8_t pfs_nmasters; /* total masters */ 1265 uint8_t pfs_mode; /* operating mode PFSMODE */ 1266 uint8_t unused01; 1267 uint8_t unused02; 1268 int free_ticks; /* free_* calculations */ 1269 long inmem_inodes; 1270 hammer2_off_t free_reserved; 1271 hammer2_off_t free_nominal; 1272 uint32_t inmem_dirty_chains; 1273 int count_lwinprog; /* logical write in prog */ 1274 hammer2_spin_t list_spin; 1275 struct inoq_head syncq; /* SYNCQ flagged inodes */ 1276 struct depq_head depq; /* SIDEQ flagged inodes */ 1277 long sideq_count; /* total inodes on depq */ 1278 hammer2_thread_t sync_thrs[HAMMER2_MAXCLUSTER]; 1279 uint32_t cluster_flags; /* cached cluster flags */ 1280 int has_xop_threads; 1281 hammer2_spin_t xop_spin; /* xop sequencer */ 1282 hammer2_xop_group_t *xop_groups; 1283 struct recq_head recq; /* makefs */ 1284 }; 1285 1286 typedef struct hammer2_pfs hammer2_pfs_t; 1287 1288 TAILQ_HEAD(hammer2_pfslist, hammer2_pfs); 1289 1290 /* 1291 * pmp->flags 1292 */ 1293 #define HAMMER2_PMPF_SPMP 0x00000001 1294 #define HAMMER2_PMPF_EMERG 0x00000002 /* Emergency delete mode */ 1295 1296 /* 1297 * NOTE: The LRU list contains at least all the chains with refs == 0 1298 * that can be recycled, and may contain additional chains which 1299 * cannot. 1300 */ 1301 #define HAMMER2_LRU_LIMIT 4096 1302 1303 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000 1304 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF 1305 1306 #define HAMMER2_LWINPROG_WAITING 0x80000000 1307 #define HAMMER2_LWINPROG_WAITING0 0x40000000 1308 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF 1309 1310 /* 1311 * hammer2_cluster_check 1312 */ 1313 #define HAMMER2_CHECK_NULL 0x00000001 1314 1315 /* 1316 * Misc 1317 */ 1318 //#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 1319 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data) 1320 //#endif 1321 1322 //#if defined(_KERNEL) 1323 1324 #ifdef MALLOC_DECLARE 1325 MALLOC_DECLARE(M_HAMMER2); 1326 #endif 1327 1328 static __inline 1329 hammer2_pfs_t * 1330 MPTOPMP(struct mount *mp) 1331 { 1332 return ((hammer2_pfs_t *)mp->mnt_data); 1333 } 1334 1335 #define HAMMER2_DEDUP_FRAG (HAMMER2_PBUFSIZE / 64) 1336 #define HAMMER2_DEDUP_FRAGRADIX (HAMMER2_PBUFRADIX - 6) 1337 1338 static __inline 1339 uint64_t 1340 hammer2_dedup_mask(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes) 1341 { 1342 int bbeg; 1343 int bits; 1344 uint64_t mask; 1345 1346 bbeg = (int)((data_off & ~HAMMER2_OFF_MASK_RADIX) - dio->pbase) >> 1347 HAMMER2_DEDUP_FRAGRADIX; 1348 bits = (int)((bytes + (HAMMER2_DEDUP_FRAG - 1)) >> 1349 HAMMER2_DEDUP_FRAGRADIX); 1350 if (bbeg + bits == 64) 1351 mask = (uint64_t)-1; 1352 else 1353 mask = ((uint64_t)1 << (bbeg + bits)) - 1; 1354 1355 mask &= ~(((uint64_t)1 << bbeg) - 1); 1356 1357 return mask; 1358 } 1359 1360 static __inline 1361 int 1362 hammer2_error_to_errno(int error) 1363 { 1364 if (error) { 1365 if (error & HAMMER2_ERROR_EIO) 1366 error = EIO; 1367 else if (error & HAMMER2_ERROR_CHECK) 1368 error = EDOM; 1369 else if (error & HAMMER2_ERROR_ABORTED) 1370 error = EINTR; 1371 else if (error & HAMMER2_ERROR_BADBREF) 1372 error = EIO; 1373 else if (error & HAMMER2_ERROR_ENOSPC) 1374 error = ENOSPC; 1375 else if (error & HAMMER2_ERROR_ENOENT) 1376 error = ENOENT; 1377 else if (error & HAMMER2_ERROR_ENOTEMPTY) 1378 error = ENOTEMPTY; 1379 else if (error & HAMMER2_ERROR_EAGAIN) 1380 error = EAGAIN; 1381 else if (error & HAMMER2_ERROR_ENOTDIR) 1382 error = ENOTDIR; 1383 else if (error & HAMMER2_ERROR_EISDIR) 1384 error = EISDIR; 1385 else if (error & HAMMER2_ERROR_EINPROGRESS) 1386 error = EINPROGRESS; 1387 else if (error & HAMMER2_ERROR_EEXIST) 1388 error = EEXIST; 1389 else if (error & HAMMER2_ERROR_EINVAL) 1390 error = EINVAL; 1391 else if (error & HAMMER2_ERROR_EDEADLK) 1392 error = EDEADLK; 1393 else if (error & HAMMER2_ERROR_ESRCH) 1394 error = ESRCH; 1395 else if (error & HAMMER2_ERROR_ETIMEDOUT) 1396 error = ETIMEDOUT; 1397 else 1398 error = EDOM; 1399 } 1400 return error; 1401 } 1402 1403 static __inline 1404 int 1405 hammer2_errno_to_error(int error) 1406 { 1407 switch(error) { 1408 case 0: 1409 return 0; 1410 case EIO: 1411 return HAMMER2_ERROR_EIO; 1412 case EDOM: 1413 return HAMMER2_ERROR_CHECK; 1414 case EINTR: 1415 return HAMMER2_ERROR_ABORTED; 1416 //case EIO: 1417 // return HAMMER2_ERROR_BADBREF; 1418 case ENOSPC: 1419 return HAMMER2_ERROR_ENOSPC; 1420 case ENOENT: 1421 return HAMMER2_ERROR_ENOENT; 1422 case ENOTEMPTY: 1423 return HAMMER2_ERROR_ENOTEMPTY; 1424 case EAGAIN: 1425 return HAMMER2_ERROR_EAGAIN; 1426 case ENOTDIR: 1427 return HAMMER2_ERROR_ENOTDIR; 1428 case EISDIR: 1429 return HAMMER2_ERROR_EISDIR; 1430 case EINPROGRESS: 1431 return HAMMER2_ERROR_EINPROGRESS; 1432 case EEXIST: 1433 return HAMMER2_ERROR_EEXIST; 1434 case EINVAL: 1435 return HAMMER2_ERROR_EINVAL; 1436 case EDEADLK: 1437 return HAMMER2_ERROR_EDEADLK; 1438 case ESRCH: 1439 return HAMMER2_ERROR_ESRCH; 1440 case ETIMEDOUT: 1441 return HAMMER2_ERROR_ETIMEDOUT; 1442 default: 1443 return HAMMER2_ERROR_EINVAL; 1444 } 1445 } 1446 1447 1448 extern struct vop_ops hammer2_vnode_vops; 1449 extern struct vop_ops hammer2_spec_vops; 1450 extern struct vop_ops hammer2_fifo_vops; 1451 extern struct hammer2_pfslist hammer2_pfslist; 1452 extern struct lock hammer2_mntlk; 1453 1454 extern int hammer2_aux_flags; 1455 extern int hammer2_debug; 1456 extern int hammer2_xop_nthreads; 1457 extern int hammer2_xop_sgroups; 1458 extern int hammer2_xop_xgroups; 1459 extern int hammer2_xop_xbase; 1460 extern int hammer2_xop_mod; 1461 extern long hammer2_debug_inode; 1462 extern int hammer2_cluster_meta_read; 1463 extern int hammer2_cluster_data_read; 1464 extern int hammer2_cluster_write; 1465 extern int hammer2_dedup_enable; 1466 extern int hammer2_always_compress; 1467 extern int hammer2_flush_pipe; 1468 extern int hammer2_dio_count; 1469 extern int hammer2_dio_limit; 1470 extern int hammer2_bulkfree_tps; 1471 extern int hammer2_spread_workers; 1472 extern int hammer2_limit_saved_depth; 1473 extern long hammer2_chain_allocs; 1474 extern long hammer2_limit_saved_chains; 1475 extern long hammer2_limit_dirty_chains; 1476 extern long hammer2_limit_dirty_inodes; 1477 extern long hammer2_count_modified_chains; 1478 extern long hammer2_iod_file_read; 1479 extern long hammer2_iod_meta_read; 1480 extern long hammer2_iod_indr_read; 1481 extern long hammer2_iod_fmap_read; 1482 extern long hammer2_iod_volu_read; 1483 extern long hammer2_iod_file_write; 1484 extern long hammer2_iod_file_wembed; 1485 extern long hammer2_iod_file_wzero; 1486 extern long hammer2_iod_file_wdedup; 1487 extern long hammer2_iod_meta_write; 1488 extern long hammer2_iod_indr_write; 1489 extern long hammer2_iod_fmap_write; 1490 extern long hammer2_iod_volu_write; 1491 1492 extern long hammer2_process_icrc32; 1493 extern long hammer2_process_xxhash64; 1494 1495 extern struct objcache *cache_buffer_read; 1496 extern struct objcache *cache_buffer_write; 1497 extern struct objcache *cache_xops; 1498 1499 /* 1500 * hammer2_subr.c 1501 */ 1502 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size)) 1503 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc)) 1504 1505 int hammer2_signal_check(time_t *timep); 1506 const char *hammer2_error_str(int error); 1507 const char *hammer2_bref_type_str(int btype); 1508 1509 int hammer2_get_dtype(uint8_t type); 1510 int hammer2_get_vtype(uint8_t type); 1511 uint8_t hammer2_get_obj_type(enum vtype vtype); 1512 void hammer2_time_to_timespec(uint64_t xtime, struct timespec *ts); 1513 uint64_t hammer2_timespec_to_time(const struct timespec *ts); 1514 void hammer2_time_to_timeval(uint64_t xtime, struct timeval *tv); 1515 uint32_t hammer2_to_unix_xid(const uuid_t *uuid); 1516 void hammer2_guid_to_uuid(uuid_t *uuid, uint32_t guid); 1517 1518 hammer2_key_t hammer2_dirhash(const char *aname, size_t len); 1519 int hammer2_getradix(size_t bytes); 1520 1521 int hammer2_calc_logical(hammer2_inode_t *ip, hammer2_off_t uoff, 1522 hammer2_key_t *lbasep, hammer2_key_t *leofp); 1523 int hammer2_calc_physical(hammer2_inode_t *ip, hammer2_key_t lbase); 1524 void hammer2_update_time(uint64_t *timep, bool is_mtime); 1525 void hammer2_adjreadcounter(int btype, size_t bytes); 1526 void hammer2_adjwritecounter(int btype, size_t bytes); 1527 1528 /* 1529 * hammer2_inode.c 1530 */ 1531 struct m_vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp); 1532 hammer2_inode_t *hammer2_inode_lookup(hammer2_pfs_t *pmp, 1533 hammer2_tid_t inum); 1534 hammer2_inode_t *hammer2_inode_get(hammer2_pfs_t *pmp, 1535 hammer2_xop_head_t *xop, hammer2_tid_t inum, int idx); 1536 void hammer2_inode_ref(hammer2_inode_t *ip); 1537 void hammer2_inode_drop(hammer2_inode_t *ip); 1538 void hammer2_inode_repoint(hammer2_inode_t *ip, hammer2_cluster_t *cluster); 1539 void hammer2_inode_repoint_one(hammer2_inode_t *ip, hammer2_cluster_t *cluster, 1540 int idx); 1541 hammer2_key_t hammer2_inode_data_count(const hammer2_inode_t *ip); 1542 hammer2_key_t hammer2_inode_inode_count(const hammer2_inode_t *ip); 1543 void hammer2_inode_modify(hammer2_inode_t *ip); 1544 void hammer2_inode_delayed_sideq(hammer2_inode_t *ip); 1545 void hammer2_inode_lock(hammer2_inode_t *ip, int how); 1546 void hammer2_inode_lock4(hammer2_inode_t *ip1, hammer2_inode_t *ip2, 1547 hammer2_inode_t *ip3, hammer2_inode_t *ip4); 1548 void hammer2_inode_unlock(hammer2_inode_t *ip); 1549 void hammer2_inode_depend(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 1550 hammer2_chain_t *hammer2_inode_chain(hammer2_inode_t *ip, int clindex, int how); 1551 hammer2_chain_t *hammer2_inode_chain_and_parent(hammer2_inode_t *ip, 1552 int clindex, hammer2_chain_t **parentp, int how); 1553 hammer2_mtx_state_t hammer2_inode_lock_temp_release(hammer2_inode_t *ip); 1554 void hammer2_inode_lock_temp_restore(hammer2_inode_t *ip, 1555 hammer2_mtx_state_t ostate); 1556 int hammer2_inode_lock_upgrade(hammer2_inode_t *ip); 1557 void hammer2_inode_lock_downgrade(hammer2_inode_t *ip, int); 1558 1559 hammer2_inode_t *hammer2_inode_create_normal(hammer2_inode_t *pip, 1560 struct vattr *vap, struct ucred *cred, 1561 hammer2_key_t inum, int *errorp); 1562 hammer2_inode_t *hammer2_inode_create_pfs(hammer2_pfs_t *spmp, 1563 const char *name, size_t name_len, 1564 int *errorp); 1565 int hammer2_inode_chain_ins(hammer2_inode_t *ip); 1566 int hammer2_inode_chain_des(hammer2_inode_t *ip); 1567 int hammer2_inode_chain_sync(hammer2_inode_t *ip); 1568 int hammer2_inode_chain_flush(hammer2_inode_t *ip, int flags); 1569 int hammer2_inode_unlink_finisher(hammer2_inode_t *ip, struct m_vnode **vpp); 1570 void hammer2_inode_vprecycle(struct m_vnode *vp); 1571 int hammer2_dirent_create(hammer2_inode_t *dip, const char *name, 1572 size_t name_len, hammer2_key_t inum, uint8_t type); 1573 1574 int vflush(struct mount *mp, int rootrefs, int flags); 1575 1576 /* 1577 * hammer2_chain.c 1578 */ 1579 hammer2_chain_t *hammer2_chain_alloc(hammer2_dev_t *hmp, 1580 hammer2_pfs_t *pmp, 1581 hammer2_blockref_t *bref); 1582 void hammer2_chain_init(hammer2_chain_t *chain); 1583 void hammer2_chain_ref(hammer2_chain_t *chain); 1584 void hammer2_chain_ref_hold(hammer2_chain_t *chain); 1585 void hammer2_chain_drop(hammer2_chain_t *chain); 1586 void hammer2_chain_drop_unhold(hammer2_chain_t *chain); 1587 void hammer2_chain_unhold(hammer2_chain_t *chain); 1588 void hammer2_chain_rehold(hammer2_chain_t *chain); 1589 int hammer2_chain_lock(hammer2_chain_t *chain, int how); 1590 //void hammer2_chain_lock_unhold(hammer2_chain_t *chain, int how); 1591 void hammer2_chain_load_data(hammer2_chain_t *chain); 1592 1593 int hammer2_chain_inode_find(hammer2_pfs_t *pmp, hammer2_key_t inum, 1594 int clindex, int flags, 1595 hammer2_chain_t **parentp, 1596 hammer2_chain_t **chainp); 1597 int hammer2_chain_modify(hammer2_chain_t *chain, hammer2_tid_t mtid, 1598 hammer2_off_t dedup_off, int flags); 1599 int hammer2_chain_modify_ip(hammer2_inode_t *ip, hammer2_chain_t *chain, 1600 hammer2_tid_t mtid, int flags); 1601 int hammer2_chain_resize(hammer2_chain_t *chain, 1602 hammer2_tid_t mtid, hammer2_off_t dedup_off, 1603 int nradix, int flags); 1604 void hammer2_chain_unlock(hammer2_chain_t *chain); 1605 //void hammer2_chain_unlock_hold(hammer2_chain_t *chain); 1606 hammer2_chain_t *hammer2_chain_get(hammer2_chain_t *parent, int generation, 1607 hammer2_blockref_t *bref, int how); 1608 hammer2_chain_t *hammer2_chain_lookup_init(hammer2_chain_t *parent, int flags); 1609 void hammer2_chain_lookup_done(hammer2_chain_t *parent); 1610 hammer2_chain_t *hammer2_chain_getparent(hammer2_chain_t *chain, int flags); 1611 hammer2_chain_t *hammer2_chain_repparent(hammer2_chain_t **chainp, int flags); 1612 hammer2_chain_t *hammer2_chain_lookup(hammer2_chain_t **parentp, 1613 hammer2_key_t *key_nextp, 1614 hammer2_key_t key_beg, hammer2_key_t key_end, 1615 int *errorp, int flags); 1616 hammer2_chain_t *hammer2_chain_next(hammer2_chain_t **parentp, 1617 hammer2_chain_t *chain, 1618 hammer2_key_t *key_nextp, 1619 hammer2_key_t key_beg, hammer2_key_t key_end, 1620 int *errorp, int flags); 1621 int hammer2_chain_scan(hammer2_chain_t *parent, 1622 hammer2_chain_t **chainp, 1623 hammer2_blockref_t *bref, 1624 int *firstp, int flags); 1625 1626 int hammer2_chain_create(hammer2_chain_t **parentp, hammer2_chain_t **chainp, 1627 hammer2_dev_t *hmp, hammer2_pfs_t *pmp, 1628 int methods, hammer2_key_t key, int keybits, 1629 int type, size_t bytes, hammer2_tid_t mtid, 1630 hammer2_off_t dedup_off, int flags); 1631 void hammer2_chain_rename(hammer2_chain_t **parentp, 1632 hammer2_chain_t *chain, 1633 hammer2_tid_t mtid, int flags); 1634 int hammer2_chain_delete(hammer2_chain_t *parent, hammer2_chain_t *chain, 1635 hammer2_tid_t mtid, int flags); 1636 int hammer2_chain_indirect_maintenance(hammer2_chain_t *parent, 1637 hammer2_chain_t *chain); 1638 void hammer2_chain_setflush(hammer2_chain_t *chain); 1639 void hammer2_chain_countbrefs(hammer2_chain_t *chain, 1640 hammer2_blockref_t *base, int count); 1641 hammer2_chain_t *hammer2_chain_bulksnap(hammer2_dev_t *hmp); 1642 void hammer2_chain_bulkdrop(hammer2_chain_t *copy); 1643 1644 void hammer2_chain_setcheck(hammer2_chain_t *chain, void *bdata); 1645 int hammer2_chain_testcheck(hammer2_chain_t *chain, void *bdata); 1646 int hammer2_chain_dirent_test(hammer2_chain_t *chain, const char *name, 1647 size_t name_len); 1648 1649 void hammer2_base_delete(hammer2_chain_t *parent, 1650 hammer2_blockref_t *base, int count, 1651 hammer2_chain_t *chain, 1652 hammer2_blockref_t *obref); 1653 void hammer2_base_insert(hammer2_chain_t *parent, 1654 hammer2_blockref_t *base, int count, 1655 hammer2_chain_t *chain, 1656 hammer2_blockref_t *elm); 1657 void hammer2_dump_chain(hammer2_chain_t *chain, int tab, int bi, int *countp, 1658 char pfx, u_int flags); 1659 void hammer2_dump_chains(hammer2_dev_t *hmp, char vpfx, char fpfx); 1660 1661 /* 1662 * hammer2_flush.c 1663 */ 1664 void hammer2_trans_manage_init(hammer2_pfs_t *pmp); 1665 int hammer2_flush(hammer2_chain_t *chain, int istop); 1666 void hammer2_trans_init(hammer2_pfs_t *pmp, uint32_t flags); 1667 void hammer2_trans_setflags(hammer2_pfs_t *pmp, uint32_t flags); 1668 void hammer2_trans_clearflags(hammer2_pfs_t *pmp, uint32_t flags); 1669 hammer2_tid_t hammer2_trans_sub(hammer2_pfs_t *pmp); 1670 void hammer2_trans_done(hammer2_pfs_t *pmp, uint32_t flags); 1671 hammer2_tid_t hammer2_trans_newinum(hammer2_pfs_t *pmp); 1672 void hammer2_trans_assert_strategy(hammer2_pfs_t *pmp); 1673 1674 /* 1675 * hammer2_ioctl.c 1676 */ 1677 int hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, 1678 int fflag, struct ucred *cred); 1679 int hammer2_ioctl_version_get(hammer2_inode_t *ip, void *data); 1680 int hammer2_ioctl_pfs_get(hammer2_inode_t *ip, void *data); 1681 int hammer2_ioctl_pfs_lookup(hammer2_inode_t *ip, void *data); 1682 int hammer2_ioctl_pfs_create(hammer2_inode_t *ip, void *data); 1683 int hammer2_ioctl_pfs_delete(hammer2_inode_t *ip, void *data); 1684 int hammer2_ioctl_pfs_snapshot(hammer2_inode_t *ip, void *data); 1685 int hammer2_ioctl_inode_get(hammer2_inode_t *ip, void *data); 1686 int hammer2_ioctl_inode_set(hammer2_inode_t *ip, void *data); 1687 int hammer2_ioctl_emerg_mode(hammer2_inode_t *ip, u_int mode); 1688 int hammer2_ioctl_bulkfree_scan(hammer2_inode_t *ip, void *data); 1689 int hammer2_ioctl_destroy(hammer2_inode_t *ip, void *data); 1690 int hammer2_ioctl_growfs(hammer2_inode_t *ip, void *data, struct ucred *cred); 1691 1692 /* 1693 * hammer2_io.c 1694 */ 1695 void hammer2_io_hash_init(hammer2_dev_t *hmp); 1696 void hammer2_inum_hash_init(hammer2_pfs_t *pmp); 1697 void hammer2_io_inval(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes); 1698 void hammer2_io_hash_cleanup_all(hammer2_dev_t *hmp); 1699 char *hammer2_io_data(hammer2_io_t *dio, off_t lbase); 1700 void hammer2_io_bkvasync(hammer2_io_t *dio); 1701 void hammer2_io_dedup_set(hammer2_dev_t *hmp, hammer2_blockref_t *bref); 1702 void hammer2_io_dedup_delete(hammer2_dev_t *hmp, uint8_t btype, 1703 hammer2_off_t data_off, u_int bytes); 1704 void hammer2_io_dedup_assert(hammer2_dev_t *hmp, hammer2_off_t data_off, 1705 u_int bytes); 1706 int hammer2_io_new(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1707 hammer2_io_t **diop); 1708 int hammer2_io_newnz(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1709 hammer2_io_t **diop); 1710 int _hammer2_io_bread(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1711 hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1712 void hammer2_io_setdirty(hammer2_io_t *dio); 1713 1714 hammer2_io_t *_hammer2_io_getblk(hammer2_dev_t *hmp, int btype, off_t lbase, 1715 int lsize, int op HAMMER2_IO_DEBUG_ARGS); 1716 hammer2_io_t *_hammer2_io_getquick(hammer2_dev_t *hmp, off_t lbase, 1717 int lsize HAMMER2_IO_DEBUG_ARGS); 1718 void _hammer2_io_putblk(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1719 int _hammer2_io_bwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1720 void _hammer2_io_bawrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1721 void _hammer2_io_bdwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1722 void _hammer2_io_brelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1723 void _hammer2_io_bqrelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1724 void _hammer2_io_ref(hammer2_io_t *dio HAMMER2_IO_DEBUG_ARGS); 1725 1726 #ifndef HAMMER2_IO_DEBUG 1727 1728 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1729 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op)) 1730 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1731 _hammer2_io_getquick((hmp), (lbase), (lsize)) 1732 #define hammer2_io_putblk(diop) \ 1733 _hammer2_io_putblk(diop) 1734 #define hammer2_io_bwrite(diop) \ 1735 _hammer2_io_bwrite((diop)) 1736 #define hammer2_io_bawrite(diop) \ 1737 _hammer2_io_bawrite((diop)) 1738 #define hammer2_io_bdwrite(diop) \ 1739 _hammer2_io_bdwrite((diop)) 1740 #define hammer2_io_brelse(diop) \ 1741 _hammer2_io_brelse((diop)) 1742 #define hammer2_io_bqrelse(diop) \ 1743 _hammer2_io_bqrelse((diop)) 1744 #define hammer2_io_ref(dio) \ 1745 _hammer2_io_ref((dio)) 1746 1747 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1748 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop)) 1749 1750 #else 1751 1752 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1753 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op), \ 1754 __FILE__, __LINE__) 1755 1756 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1757 _hammer2_io_getquick((hmp), (lbase), (lsize), __FILE__, __LINE__) 1758 1759 #define hammer2_io_putblk(diop) \ 1760 _hammer2_io_putblk(diop, __FILE__, __LINE__) 1761 1762 #define hammer2_io_bwrite(diop) \ 1763 _hammer2_io_bwrite((diop), __FILE__, __LINE__) 1764 #define hammer2_io_bawrite(diop) \ 1765 _hammer2_io_bawrite((diop), __FILE__, __LINE__) 1766 #define hammer2_io_bdwrite(diop) \ 1767 _hammer2_io_bdwrite((diop), __FILE__, __LINE__) 1768 #define hammer2_io_brelse(diop) \ 1769 _hammer2_io_brelse((diop), __FILE__, __LINE__) 1770 #define hammer2_io_bqrelse(diop) \ 1771 _hammer2_io_bqrelse((diop), __FILE__, __LINE__) 1772 #define hammer2_io_ref(dio) \ 1773 _hammer2_io_ref((dio), __FILE__, __LINE__) 1774 1775 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1776 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop), \ 1777 __FILE__, __LINE__) 1778 1779 #endif 1780 1781 /* 1782 * hammer2_admin.c 1783 */ 1784 void hammer2_thr_signal(hammer2_thread_t *thr, uint32_t flags); 1785 void hammer2_thr_signal2(hammer2_thread_t *thr, 1786 uint32_t pflags, uint32_t nflags); 1787 void hammer2_thr_wait(hammer2_thread_t *thr, uint32_t flags); 1788 void hammer2_thr_wait_neg(hammer2_thread_t *thr, uint32_t flags); 1789 int hammer2_thr_wait_any(hammer2_thread_t *thr, uint32_t flags, int timo); 1790 void hammer2_thr_create(hammer2_thread_t *thr, 1791 hammer2_pfs_t *pmp, hammer2_dev_t *hmp, 1792 const char *id, int clindex, int repidx, 1793 void (*func)(void *arg)); 1794 void hammer2_thr_delete(hammer2_thread_t *thr); 1795 void hammer2_thr_remaster(hammer2_thread_t *thr); 1796 void hammer2_thr_freeze_async(hammer2_thread_t *thr); 1797 void hammer2_thr_freeze(hammer2_thread_t *thr); 1798 void hammer2_thr_unfreeze(hammer2_thread_t *thr); 1799 int hammer2_thr_break(hammer2_thread_t *thr); 1800 void hammer2_primary_xops_thread(void *arg); 1801 1802 /* 1803 * hammer2_thread.c (XOP API) 1804 */ 1805 void *hammer2_xop_alloc(hammer2_inode_t *ip, int flags); 1806 void hammer2_xop_setname(hammer2_xop_head_t *xop, 1807 const char *name, size_t name_len); 1808 void hammer2_xop_setname2(hammer2_xop_head_t *xop, 1809 const char *name, size_t name_len); 1810 size_t hammer2_xop_setname_inum(hammer2_xop_head_t *xop, hammer2_key_t inum); 1811 void hammer2_xop_setip2(hammer2_xop_head_t *xop, hammer2_inode_t *ip2); 1812 void hammer2_xop_setip3(hammer2_xop_head_t *xop, hammer2_inode_t *ip3); 1813 void hammer2_xop_setip4(hammer2_xop_head_t *xop, hammer2_inode_t *ip4); 1814 void hammer2_xop_reinit(hammer2_xop_head_t *xop); 1815 void hammer2_xop_helper_create(hammer2_pfs_t *pmp); 1816 void hammer2_xop_helper_cleanup(hammer2_pfs_t *pmp); 1817 void hammer2_xop_start(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc); 1818 void hammer2_xop_start_except(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc, 1819 int notidx); 1820 int hammer2_xop_collect(hammer2_xop_head_t *xop, int flags); 1821 void hammer2_xop_retire(hammer2_xop_head_t *xop, uint64_t mask); 1822 int hammer2_xop_active(hammer2_xop_head_t *xop); 1823 int hammer2_xop_feed(hammer2_xop_head_t *xop, hammer2_chain_t *chain, 1824 int clindex, int error); 1825 1826 /* 1827 * hammer2_synchro.c 1828 */ 1829 void hammer2_primary_sync_thread(void *arg); 1830 1831 /* 1832 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends 1833 * may be integrated into other source files. 1834 */ 1835 void hammer2_xop_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1836 void hammer2_xop_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1837 void hammer2_xop_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1838 void hammer2_xop_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1839 void hammer2_xop_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1840 void hammer2_xop_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1841 void hammer2_xop_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1842 void hammer2_xop_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1843 void hammer2_xop_delete(hammer2_xop_t *xop, void *scratch, int clindex); 1844 void hammer2_xop_inode_mkdirent(hammer2_xop_t *xop, void *scratch, int clindex); 1845 void hammer2_xop_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1846 void hammer2_xop_inode_create_det(hammer2_xop_t *xop, 1847 void *scratch, int clindex); 1848 void hammer2_xop_inode_create_ins(hammer2_xop_t *xop, 1849 void *scratch, int clindex); 1850 void hammer2_xop_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1851 void hammer2_xop_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1852 int clindex); 1853 void hammer2_xop_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1854 int clindex); 1855 void hammer2_xop_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1856 void hammer2_xop_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1857 void hammer2_xop_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1858 void hammer2_xop_strategy_write(hammer2_xop_t *xop, void *scratch, int clindex); 1859 1860 void hammer2_dmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1861 void hammer2_dmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1862 void hammer2_dmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1863 void hammer2_dmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1864 void hammer2_dmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1865 void hammer2_dmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1866 void hammer2_dmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1867 void hammer2_dmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1868 void hammer2_dmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1869 int clindex); 1870 void hammer2_dmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1871 void hammer2_dmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1872 void hammer2_dmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1873 int clindex); 1874 void hammer2_dmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1875 int clindex); 1876 void hammer2_dmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1877 void hammer2_dmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1878 void hammer2_dmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1879 void hammer2_dmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1880 int clindex); 1881 1882 void hammer2_rmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1883 void hammer2_rmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1884 void hammer2_rmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1885 void hammer2_rmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1886 void hammer2_rmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1887 void hammer2_rmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1888 void hammer2_rmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1889 void hammer2_rmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1890 void hammer2_rmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1891 int clindex); 1892 void hammer2_rmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1893 void hammer2_rmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1894 void hammer2_rmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1895 int clindex); 1896 void hammer2_rmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1897 int clindex); 1898 void hammer2_rmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1899 void hammer2_rmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1900 void hammer2_rmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1901 void hammer2_rmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1902 int clindex); 1903 1904 extern hammer2_xop_desc_t hammer2_ipcluster_desc; 1905 extern hammer2_xop_desc_t hammer2_readdir_desc; 1906 extern hammer2_xop_desc_t hammer2_nresolve_desc; 1907 extern hammer2_xop_desc_t hammer2_unlink_desc; 1908 extern hammer2_xop_desc_t hammer2_nrename_desc; 1909 extern hammer2_xop_desc_t hammer2_scanlhc_desc; 1910 extern hammer2_xop_desc_t hammer2_scanall_desc; 1911 extern hammer2_xop_desc_t hammer2_lookup_desc; 1912 extern hammer2_xop_desc_t hammer2_delete_desc; 1913 extern hammer2_xop_desc_t hammer2_inode_mkdirent_desc; 1914 extern hammer2_xop_desc_t hammer2_inode_create_desc; 1915 extern hammer2_xop_desc_t hammer2_inode_create_det_desc; 1916 extern hammer2_xop_desc_t hammer2_inode_create_ins_desc; 1917 extern hammer2_xop_desc_t hammer2_inode_destroy_desc; 1918 extern hammer2_xop_desc_t hammer2_inode_chain_sync_desc; 1919 extern hammer2_xop_desc_t hammer2_inode_unlinkall_desc; 1920 extern hammer2_xop_desc_t hammer2_inode_connect_desc; 1921 extern hammer2_xop_desc_t hammer2_inode_flush_desc; 1922 extern hammer2_xop_desc_t hammer2_strategy_read_desc; 1923 extern hammer2_xop_desc_t hammer2_strategy_write_desc; 1924 1925 /* 1926 * hammer2_msgops.c 1927 */ 1928 /* 1929 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t *msg); 1930 int hammer2_msg_adhoc_input(kdmsg_msg_t *msg); 1931 */ 1932 1933 /* 1934 * hammer2_vfsops.c 1935 */ 1936 int hammer2_vfs_sync(struct mount *mp, int waitflags); 1937 int hammer2_vfs_sync_pmp(hammer2_pfs_t *pmp, int waitfor); 1938 int hammer2_vfs_enospace(hammer2_inode_t *ip, off_t bytes, struct ucred *cred); 1939 1940 hammer2_pfs_t *hammer2_pfsalloc(hammer2_chain_t *chain, 1941 const hammer2_inode_data_t *ripdata, 1942 hammer2_dev_t *force_local); 1943 void hammer2_pfsdealloc(hammer2_pfs_t *pmp, int clindex, int destroying); 1944 int hammer2_vfs_vget(struct mount *mp, struct m_vnode *dvp, 1945 ino_t ino, struct m_vnode **vpp); 1946 int hammer2_vfs_root(struct mount *mp, struct m_vnode **vpp); 1947 1948 void hammer2_lwinprog_ref(hammer2_pfs_t *pmp); 1949 void hammer2_lwinprog_drop(hammer2_pfs_t *pmp); 1950 void hammer2_lwinprog_wait(hammer2_pfs_t *pmp, int pipe); 1951 1952 void hammer2_pfs_memory_wait(hammer2_pfs_t *pmp); 1953 void hammer2_pfs_memory_inc(hammer2_pfs_t *pmp); 1954 void hammer2_pfs_memory_wakeup(hammer2_pfs_t *pmp, int count); 1955 1956 void hammer2_voldata_lock(hammer2_dev_t *hmp); 1957 void hammer2_voldata_unlock(hammer2_dev_t *hmp); 1958 void hammer2_voldata_modify(hammer2_dev_t *hmp); 1959 1960 int hammer2_vfs_init(void); 1961 int hammer2_vfs_uninit(void); 1962 1963 int hammer2_vfs_mount(struct m_vnode *makefs_devvp, struct mount *mp, 1964 const char *label, const struct hammer2_mount_info *mi); 1965 int hammer2_vfs_unmount(struct mount *mp, int mntflags); 1966 1967 /* 1968 * hammer2_freemap.c 1969 */ 1970 int hammer2_freemap_alloc(hammer2_chain_t *chain, size_t bytes); 1971 void hammer2_freemap_adjust(hammer2_dev_t *hmp, 1972 hammer2_blockref_t *bref, int how); 1973 1974 /* 1975 * hammer2_cluster.c 1976 */ 1977 uint8_t hammer2_cluster_type(hammer2_cluster_t *cluster); 1978 void hammer2_cluster_bref(hammer2_cluster_t *cluster, hammer2_blockref_t *bref); 1979 void hammer2_cluster_ref(hammer2_cluster_t *cluster); 1980 void hammer2_cluster_drop(hammer2_cluster_t *cluster); 1981 void hammer2_cluster_unhold(hammer2_cluster_t *cluster); 1982 void hammer2_cluster_rehold(hammer2_cluster_t *cluster); 1983 void hammer2_cluster_lock(hammer2_cluster_t *cluster, int how); 1984 int hammer2_cluster_check(hammer2_cluster_t *cluster, hammer2_key_t lokey, 1985 int flags); 1986 void hammer2_cluster_unlock(hammer2_cluster_t *cluster); 1987 1988 void hammer2_bulkfree_init(hammer2_dev_t *hmp); 1989 void hammer2_bulkfree_uninit(hammer2_dev_t *hmp); 1990 int hammer2_bulkfree_pass(hammer2_dev_t *hmp, hammer2_chain_t *vchain, 1991 struct hammer2_ioc_bulkfree *bfi); 1992 void hammer2_dummy_xop_from_chain(hammer2_xop_head_t *xop, 1993 hammer2_chain_t *chain); 1994 1995 /* 1996 * hammer2_iocom.c 1997 */ 1998 /* 1999 void hammer2_iocom_init(hammer2_dev_t *hmp); 2000 void hammer2_iocom_uninit(hammer2_dev_t *hmp); 2001 void hammer2_cluster_reconnect(hammer2_dev_t *hmp, struct file *fp); 2002 */ 2003 void hammer2_volconf_update(hammer2_dev_t *hmp, int index); 2004 2005 /* 2006 * hammer2_strategy.c 2007 */ 2008 int hammer2_vop_strategy(struct vop_strategy_args *ap); 2009 int hammer2_vop_bmap(struct vop_bmap_args *ap); 2010 void hammer2_bioq_sync(hammer2_pfs_t *pmp); 2011 void hammer2_dedup_record(hammer2_chain_t *chain, hammer2_io_t *dio, 2012 const char *data); 2013 void hammer2_dedup_clear(hammer2_dev_t *hmp); 2014 2015 /* 2016 * hammer2_ondisk.c 2017 */ 2018 int hammer2_open_devvp(const hammer2_devvp_list_t *devvpl, int ronly); 2019 int hammer2_close_devvp(const hammer2_devvp_list_t *devvpl, int ronly); 2020 int hammer2_init_devvp(struct m_vnode *devvp, hammer2_devvp_list_t *devvpl); 2021 void hammer2_cleanup_devvp(hammer2_devvp_list_t *devvpl); 2022 int hammer2_init_vfsvolumes(struct mount *mp, 2023 const hammer2_devvp_list_t *devvpl, 2024 hammer2_vfsvolume_t *volumes, 2025 hammer2_volume_data_t *rootvoldata, 2026 int *rootvolzone, 2027 struct m_vnode **rootvoldevvp); 2028 hammer2_vfsvolume_t *hammer2_get_volume_from_hmp(hammer2_dev_t *hmp, 2029 hammer2_off_t offset); 2030 2031 /* 2032 * hammer2_vnops.c 2033 */ 2034 int hammer2_reclaim(struct m_vnode *vp); 2035 int hammer2_readdir(struct m_vnode *vp, void *buf, size_t size, off_t *offsetp, 2036 int *ndirentp, int *eofflagp); 2037 int hammer2_readlink(struct m_vnode *vp, void *buf, size_t size); 2038 int hammer2_read(struct m_vnode *vp, void *buf, size_t size, off_t offset); 2039 int hammer2_write(struct m_vnode *vp, void *buf, size_t size, off_t offset); 2040 int hammer2_nresolve(struct m_vnode *dvp, struct m_vnode **vpp, char *name, int nlen); 2041 int hammer2_nmkdir(struct m_vnode *dvp, struct m_vnode **vpp, char *name, int nlen, 2042 mode_t mode); 2043 int hammer2_nlink(struct m_vnode *dvp, struct m_vnode *vp, char *name, int nlen); 2044 int hammer2_ncreate(struct m_vnode *dvp, struct m_vnode **vpp, char *name, int nlen, 2045 mode_t mode); 2046 int hammer2_nmknod(struct m_vnode *dvp, struct m_vnode **vpp, char *name, int nlen, 2047 int type, mode_t mode); 2048 int hammer2_nsymlink(struct m_vnode *dvp, struct m_vnode **vpp, char *name, int nlen, 2049 char *target, mode_t mode); 2050 2051 /* 2052 * hammer2_buf.c 2053 */ 2054 struct m_buf *getblkx(struct m_vnode *vp, off_t loffset, int size, int blkflags, 2055 int slptimeo); 2056 int breadx(struct m_vnode *vp, off_t loffset, int size, struct m_buf **bpp); 2057 int bread_kvabio(struct m_vnode *vp, off_t loffset, int size, struct m_buf **bpp); 2058 void bqrelse(struct m_buf *bp); 2059 int bawrite(struct m_buf *bp); 2060 int uiomove(caddr_t cp, size_t n, struct uio *uio); 2061 int uiomovebp(struct m_buf *bp, caddr_t cp, size_t n, struct uio *uio); 2062 2063 /* 2064 * More complex inlines 2065 */ 2066 2067 #define hammer2_xop_gdata(xop) _hammer2_xop_gdata((xop), __FILE__, __LINE__) 2068 2069 static __inline 2070 const hammer2_media_data_t * 2071 _hammer2_xop_gdata(hammer2_xop_head_t *xop, const char *file, int line) 2072 { 2073 hammer2_chain_t *focus; 2074 const void *data; 2075 2076 focus = xop->cluster.focus; 2077 if (focus->dio) { 2078 lockmgr(&focus->diolk, LK_SHARED); 2079 if ((xop->focus_dio = focus->dio) != NULL) { 2080 _hammer2_io_ref(xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2081 hammer2_io_bkvasync(xop->focus_dio); 2082 } 2083 data = focus->data; 2084 lockmgr(&focus->diolk, LK_RELEASE); 2085 } else { 2086 data = focus->data; 2087 } 2088 2089 return data; 2090 } 2091 2092 #define hammer2_xop_pdata(xop) _hammer2_xop_pdata((xop), __FILE__, __LINE__) 2093 2094 static __inline 2095 void 2096 _hammer2_xop_pdata(hammer2_xop_head_t *xop, const char *file, int line) 2097 { 2098 if (xop->focus_dio) 2099 _hammer2_io_putblk(&xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2100 } 2101 2102 static __inline 2103 void 2104 hammer2_knote(struct m_vnode *vp, int flags) 2105 { 2106 if (flags) 2107 KNOTE(&vp->v_pollinfo.vpi_kqinfo.ki_note, flags); 2108 } 2109 2110 static __inline 2111 void 2112 hammer2_iocom_init(hammer2_dev_t *hmp) 2113 { 2114 } 2115 2116 static __inline 2117 void 2118 hammer2_iocom_uninit(hammer2_dev_t *hmp) 2119 { 2120 } 2121 2122 //#endif /* !_KERNEL */ 2123 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */ 2124