1 /* internal AFS stuff 2 * 3 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 */ 11 12 #include <linux/compiler.h> 13 #include <linux/kernel.h> 14 #include <linux/ktime.h> 15 #include <linux/fs.h> 16 #include <linux/pagemap.h> 17 #include <linux/rxrpc.h> 18 #include <linux/key.h> 19 #include <linux/workqueue.h> 20 #include <linux/sched.h> 21 #include <linux/fscache.h> 22 #include <linux/backing-dev.h> 23 #include <linux/uuid.h> 24 #include <net/net_namespace.h> 25 #include <net/af_rxrpc.h> 26 27 #include "afs.h" 28 #include "afs_vl.h" 29 30 #define AFS_CELL_MAX_ADDRS 15 31 32 struct pagevec; 33 struct afs_call; 34 35 struct afs_mount_params { 36 bool rwpath; /* T if the parent should be considered R/W */ 37 bool force; /* T to force cell type */ 38 bool autocell; /* T if set auto mount operation */ 39 bool dyn_root; /* T if dynamic root */ 40 afs_voltype_t type; /* type of volume requested */ 41 int volnamesz; /* size of volume name */ 42 const char *volname; /* name of volume to mount */ 43 struct afs_net *net; /* Network namespace in effect */ 44 struct afs_cell *cell; /* cell in which to find volume */ 45 struct afs_volume *volume; /* volume record */ 46 struct key *key; /* key to use for secure mounting */ 47 }; 48 49 struct afs_iget_data { 50 struct afs_fid fid; 51 struct afs_volume *volume; /* volume on which resides */ 52 }; 53 54 enum afs_call_state { 55 AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */ 56 AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */ 57 AFS_CALL_CL_PROC_REPLY, /* Client: rxrpc call complete; processing reply */ 58 AFS_CALL_SV_AWAIT_OP_ID, /* Server: Awaiting op ID */ 59 AFS_CALL_SV_AWAIT_REQUEST, /* Server: Awaiting request data */ 60 AFS_CALL_SV_REPLYING, /* Server: Replying */ 61 AFS_CALL_SV_AWAIT_ACK, /* Server: Awaiting final ACK */ 62 AFS_CALL_COMPLETE, /* Completed or failed */ 63 }; 64 65 /* 66 * List of server addresses. 67 */ 68 struct afs_addr_list { 69 struct rcu_head rcu; /* Must be first */ 70 refcount_t usage; 71 u32 version; /* Version */ 72 unsigned short nr_addrs; 73 unsigned short index; /* Address currently in use */ 74 unsigned short nr_ipv4; /* Number of IPv4 addresses */ 75 unsigned long probed; /* Mask of servers that have been probed */ 76 unsigned long yfs; /* Mask of servers that are YFS */ 77 struct sockaddr_rxrpc addrs[]; 78 }; 79 80 /* 81 * a record of an in-progress RxRPC call 82 */ 83 struct afs_call { 84 const struct afs_call_type *type; /* type of call */ 85 wait_queue_head_t waitq; /* processes awaiting completion */ 86 struct work_struct async_work; /* async I/O processor */ 87 struct work_struct work; /* actual work processor */ 88 struct rxrpc_call *rxcall; /* RxRPC call handle */ 89 struct key *key; /* security for this call */ 90 struct afs_net *net; /* The network namespace */ 91 struct afs_server *cm_server; /* Server affected by incoming CM call */ 92 struct afs_cb_interest *cbi; /* Callback interest for server used */ 93 void *request; /* request data (first part) */ 94 struct address_space *mapping; /* Pages being written from */ 95 void *buffer; /* reply receive buffer */ 96 void *reply[4]; /* Where to put the reply */ 97 pgoff_t first; /* first page in mapping to deal with */ 98 pgoff_t last; /* last page in mapping to deal with */ 99 size_t offset; /* offset into received data store */ 100 atomic_t usage; 101 enum afs_call_state state; 102 spinlock_t state_lock; 103 int error; /* error code */ 104 u32 abort_code; /* Remote abort ID or 0 */ 105 unsigned request_size; /* size of request data */ 106 unsigned reply_max; /* maximum size of reply */ 107 unsigned first_offset; /* offset into mapping[first] */ 108 unsigned int cb_break; /* cb_break + cb_s_break before the call */ 109 union { 110 unsigned last_to; /* amount of mapping[last] */ 111 unsigned count2; /* count used in unmarshalling */ 112 }; 113 unsigned char unmarshall; /* unmarshalling phase */ 114 bool incoming; /* T if incoming call */ 115 bool send_pages; /* T if data from mapping should be sent */ 116 bool need_attention; /* T if RxRPC poked us */ 117 bool async; /* T if asynchronous */ 118 bool ret_reply0; /* T if should return reply[0] on success */ 119 bool upgrade; /* T to request service upgrade */ 120 u16 service_id; /* Actual service ID (after upgrade) */ 121 unsigned int debug_id; /* Trace ID */ 122 u32 operation_ID; /* operation ID for an incoming call */ 123 u32 count; /* count for use in unmarshalling */ 124 __be32 tmp; /* place to extract temporary data */ 125 afs_dataversion_t expected_version; /* Updated version expected from store */ 126 afs_dataversion_t expected_version_2; /* 2nd updated version expected from store */ 127 }; 128 129 struct afs_call_type { 130 const char *name; 131 unsigned int op; /* Really enum afs_fs_operation */ 132 133 /* deliver request or reply data to an call 134 * - returning an error will cause the call to be aborted 135 */ 136 int (*deliver)(struct afs_call *call); 137 138 /* clean up a call */ 139 void (*destructor)(struct afs_call *call); 140 141 /* Work function */ 142 void (*work)(struct work_struct *work); 143 }; 144 145 /* 146 * Key available for writeback on a file. 147 */ 148 struct afs_wb_key { 149 refcount_t usage; 150 struct key *key; 151 struct list_head vnode_link; /* Link in vnode->wb_keys */ 152 }; 153 154 /* 155 * AFS open file information record. Pointed to by file->private_data. 156 */ 157 struct afs_file { 158 struct key *key; /* The key this file was opened with */ 159 struct afs_wb_key *wb; /* Writeback key record for this file */ 160 }; 161 162 static inline struct key *afs_file_key(struct file *file) 163 { 164 struct afs_file *af = file->private_data; 165 166 return af->key; 167 } 168 169 /* 170 * Record of an outstanding read operation on a vnode. 171 */ 172 struct afs_read { 173 loff_t pos; /* Where to start reading */ 174 loff_t len; /* How much we're asking for */ 175 loff_t actual_len; /* How much we're actually getting */ 176 loff_t remain; /* Amount remaining */ 177 loff_t file_size; /* File size returned by server */ 178 afs_dataversion_t data_version; /* Version number returned by server */ 179 refcount_t usage; 180 unsigned int index; /* Which page we're reading into */ 181 unsigned int nr_pages; 182 void (*page_done)(struct afs_call *, struct afs_read *); 183 struct page **pages; 184 struct page *array[]; 185 }; 186 187 /* 188 * AFS superblock private data 189 * - there's one superblock per volume 190 */ 191 struct afs_super_info { 192 struct afs_net *net; /* Network namespace */ 193 struct afs_cell *cell; /* The cell in which the volume resides */ 194 struct afs_volume *volume; /* volume record */ 195 bool dyn_root; /* True if dynamic root */ 196 }; 197 198 static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) 199 { 200 return sb->s_fs_info; 201 } 202 203 extern struct file_system_type afs_fs_type; 204 205 /* 206 * Set of substitutes for @sys. 207 */ 208 struct afs_sysnames { 209 #define AFS_NR_SYSNAME 16 210 char *subs[AFS_NR_SYSNAME]; 211 refcount_t usage; 212 unsigned short nr; 213 short error; 214 char blank[1]; 215 }; 216 217 /* 218 * AFS network namespace record. 219 */ 220 struct afs_net { 221 struct afs_uuid uuid; 222 bool live; /* F if this namespace is being removed */ 223 224 /* AF_RXRPC I/O stuff */ 225 struct socket *socket; 226 struct afs_call *spare_incoming_call; 227 struct work_struct charge_preallocation_work; 228 struct mutex socket_mutex; 229 atomic_t nr_outstanding_calls; 230 atomic_t nr_superblocks; 231 232 /* Cell database */ 233 struct rb_root cells; 234 struct afs_cell *ws_cell; 235 struct work_struct cells_manager; 236 struct timer_list cells_timer; 237 atomic_t cells_outstanding; 238 seqlock_t cells_lock; 239 240 spinlock_t proc_cells_lock; 241 struct list_head proc_cells; 242 243 /* Known servers. Theoretically each fileserver can only be in one 244 * cell, but in practice, people create aliases and subsets and there's 245 * no easy way to distinguish them. 246 */ 247 seqlock_t fs_lock; /* For fs_servers */ 248 struct rb_root fs_servers; /* afs_server (by server UUID or address) */ 249 struct list_head fs_updates; /* afs_server (by update_at) */ 250 struct hlist_head fs_proc; /* procfs servers list */ 251 252 struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */ 253 struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */ 254 seqlock_t fs_addr_lock; /* For fs_addresses[46] */ 255 256 struct work_struct fs_manager; 257 struct timer_list fs_timer; 258 atomic_t servers_outstanding; 259 260 /* File locking renewal management */ 261 struct mutex lock_manager_mutex; 262 263 /* Misc */ 264 struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ 265 struct afs_sysnames *sysnames; 266 rwlock_t sysnames_lock; 267 268 /* Statistics counters */ 269 atomic_t n_lookup; /* Number of lookups done */ 270 atomic_t n_reval; /* Number of dentries needing revalidation */ 271 atomic_t n_inval; /* Number of invalidations by the server */ 272 atomic_t n_relpg; /* Number of invalidations by releasepage */ 273 atomic_t n_read_dir; /* Number of directory pages read */ 274 atomic_t n_dir_cr; /* Number of directory entry creation edits */ 275 atomic_t n_dir_rm; /* Number of directory entry removal edits */ 276 atomic_t n_stores; /* Number of store ops */ 277 atomic_long_t n_store_bytes; /* Number of bytes stored */ 278 atomic_long_t n_fetch_bytes; /* Number of bytes fetched */ 279 atomic_t n_fetches; /* Number of data fetch ops */ 280 }; 281 282 extern const char afs_init_sysname[]; 283 extern struct afs_net __afs_net;// Dummy AFS network namespace; TODO: replace with real netns 284 285 enum afs_cell_state { 286 AFS_CELL_UNSET, 287 AFS_CELL_ACTIVATING, 288 AFS_CELL_ACTIVE, 289 AFS_CELL_DEACTIVATING, 290 AFS_CELL_INACTIVE, 291 AFS_CELL_FAILED, 292 }; 293 294 /* 295 * AFS cell record. 296 * 297 * This is a tricky concept to get right as it is possible to create aliases 298 * simply by pointing AFSDB/SRV records for two names at the same set of VL 299 * servers; it is also possible to do things like setting up two sets of VL 300 * servers, one of which provides a superset of the volumes provided by the 301 * other (for internal/external division, for example). 302 * 303 * Cells only exist in the sense that (a) a cell's name maps to a set of VL 304 * servers and (b) a cell's name is used by the client to select the key to use 305 * for authentication and encryption. The cell name is not typically used in 306 * the protocol. 307 * 308 * There is no easy way to determine if two cells are aliases or one is a 309 * subset of another. 310 */ 311 struct afs_cell { 312 union { 313 struct rcu_head rcu; 314 struct rb_node net_node; /* Node in net->cells */ 315 }; 316 struct afs_net *net; 317 struct key *anonymous_key; /* anonymous user key for this cell */ 318 struct work_struct manager; /* Manager for init/deinit/dns */ 319 struct list_head proc_link; /* /proc cell list link */ 320 #ifdef CONFIG_AFS_FSCACHE 321 struct fscache_cookie *cache; /* caching cookie */ 322 #endif 323 time64_t dns_expiry; /* Time AFSDB/SRV record expires */ 324 time64_t last_inactive; /* Time of last drop of usage count */ 325 atomic_t usage; 326 unsigned long flags; 327 #define AFS_CELL_FL_NOT_READY 0 /* The cell record is not ready for use */ 328 #define AFS_CELL_FL_NO_GC 1 /* The cell was added manually, don't auto-gc */ 329 #define AFS_CELL_FL_NOT_FOUND 2 /* Permanent DNS error */ 330 #define AFS_CELL_FL_DNS_FAIL 3 /* Failed to access DNS */ 331 #define AFS_CELL_FL_NO_LOOKUP_YET 4 /* Not completed first DNS lookup yet */ 332 enum afs_cell_state state; 333 short error; 334 335 /* Active fileserver interaction state. */ 336 struct list_head proc_volumes; /* procfs volume list */ 337 rwlock_t proc_lock; 338 339 /* VL server list. */ 340 rwlock_t vl_addrs_lock; /* Lock on vl_addrs */ 341 struct afs_addr_list __rcu *vl_addrs; /* List of VL servers */ 342 u8 name_len; /* Length of name */ 343 char name[64 + 1]; /* Cell name, case-flattened and NUL-padded */ 344 }; 345 346 /* 347 * Cached VLDB entry. 348 * 349 * This is pointed to by cell->vldb_entries, indexed by name. 350 */ 351 struct afs_vldb_entry { 352 afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */ 353 354 unsigned long flags; 355 #define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */ 356 #define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */ 357 #define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */ 358 #define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */ 359 #define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */ 360 361 uuid_t fs_server[AFS_NMAXNSERVERS]; 362 u8 fs_mask[AFS_NMAXNSERVERS]; 363 #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ 364 #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ 365 #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ 366 short error; 367 u8 nr_servers; /* Number of server records */ 368 u8 name_len; 369 u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 370 }; 371 372 /* 373 * Record of fileserver with which we're actively communicating. 374 */ 375 struct afs_server { 376 struct rcu_head rcu; 377 union { 378 uuid_t uuid; /* Server ID */ 379 struct afs_uuid _uuid; 380 }; 381 382 struct afs_addr_list __rcu *addresses; 383 struct rb_node uuid_rb; /* Link in net->servers */ 384 struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ 385 struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ 386 struct hlist_node proc_link; /* Link in net->fs_proc */ 387 struct afs_server *gc_next; /* Next server in manager's list */ 388 time64_t put_time; /* Time at which last put */ 389 time64_t update_at; /* Time at which to next update the record */ 390 unsigned long flags; 391 #define AFS_SERVER_FL_NEW 0 /* New server, don't inc cb_s_break */ 392 #define AFS_SERVER_FL_NOT_READY 1 /* The record is not ready for use */ 393 #define AFS_SERVER_FL_NOT_FOUND 2 /* VL server says no such server */ 394 #define AFS_SERVER_FL_VL_FAIL 3 /* Failed to access VL server */ 395 #define AFS_SERVER_FL_UPDATING 4 396 #define AFS_SERVER_FL_PROBED 5 /* The fileserver has been probed */ 397 #define AFS_SERVER_FL_PROBING 6 /* Fileserver is being probed */ 398 #define AFS_SERVER_FL_NO_IBULK 7 /* Fileserver doesn't support FS.InlineBulkStatus */ 399 #define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */ 400 atomic_t usage; 401 u32 addr_version; /* Address list version */ 402 403 /* file service access */ 404 rwlock_t fs_lock; /* access lock */ 405 406 /* callback promise management */ 407 struct list_head cb_interests; /* List of superblocks using this server */ 408 unsigned cb_s_break; /* Break-everything counter. */ 409 rwlock_t cb_break_lock; /* Volume finding lock */ 410 }; 411 412 /* 413 * Interest by a superblock on a server. 414 */ 415 struct afs_cb_interest { 416 struct list_head cb_link; /* Link in server->cb_interests */ 417 struct afs_server *server; /* Server on which this interest resides */ 418 struct super_block *sb; /* Superblock on which inodes reside */ 419 afs_volid_t vid; /* Volume ID to match */ 420 refcount_t usage; 421 }; 422 423 /* 424 * Replaceable server list. 425 */ 426 struct afs_server_entry { 427 struct afs_server *server; 428 struct afs_cb_interest *cb_interest; 429 }; 430 431 struct afs_server_list { 432 refcount_t usage; 433 unsigned short nr_servers; 434 unsigned short index; /* Server currently in use */ 435 unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ 436 unsigned int seq; /* Set to ->servers_seq when installed */ 437 rwlock_t lock; 438 struct afs_server_entry servers[]; 439 }; 440 441 /* 442 * Live AFS volume management. 443 */ 444 struct afs_volume { 445 afs_volid_t vid; /* volume ID */ 446 atomic_t usage; 447 time64_t update_at; /* Time at which to next update */ 448 struct afs_cell *cell; /* Cell to which belongs (pins ref) */ 449 struct list_head proc_link; /* Link in cell->vl_proc */ 450 unsigned long flags; 451 #define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */ 452 #define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */ 453 #define AFS_VOLUME_WAIT 2 /* - T if users must wait for update */ 454 #define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */ 455 #define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */ 456 #define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */ 457 #ifdef CONFIG_AFS_FSCACHE 458 struct fscache_cookie *cache; /* caching cookie */ 459 #endif 460 struct afs_server_list *servers; /* List of servers on which volume resides */ 461 rwlock_t servers_lock; /* Lock for ->servers */ 462 unsigned int servers_seq; /* Incremented each time ->servers changes */ 463 464 unsigned cb_v_break; /* Break-everything counter. */ 465 rwlock_t cb_break_lock; 466 467 afs_voltype_t type; /* type of volume */ 468 short error; 469 char type_force; /* force volume type (suppress R/O -> R/W) */ 470 u8 name_len; 471 u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 472 }; 473 474 enum afs_lock_state { 475 AFS_VNODE_LOCK_NONE, /* The vnode has no lock on the server */ 476 AFS_VNODE_LOCK_WAITING_FOR_CB, /* We're waiting for the server to break the callback */ 477 AFS_VNODE_LOCK_SETTING, /* We're asking the server for a lock */ 478 AFS_VNODE_LOCK_GRANTED, /* We have a lock on the server */ 479 AFS_VNODE_LOCK_EXTENDING, /* We're extending a lock on the server */ 480 AFS_VNODE_LOCK_NEED_UNLOCK, /* We need to unlock on the server */ 481 AFS_VNODE_LOCK_UNLOCKING, /* We're telling the server to unlock */ 482 }; 483 484 /* 485 * AFS inode private data. 486 * 487 * Note that afs_alloc_inode() *must* reset anything that could incorrectly 488 * leak from one inode to another. 489 */ 490 struct afs_vnode { 491 struct inode vfs_inode; /* the VFS's inode record */ 492 493 struct afs_volume *volume; /* volume on which vnode resides */ 494 struct afs_fid fid; /* the file identifier for this inode */ 495 struct afs_file_status status; /* AFS status info for this file */ 496 afs_dataversion_t invalid_before; /* Child dentries are invalid before this */ 497 #ifdef CONFIG_AFS_FSCACHE 498 struct fscache_cookie *cache; /* caching cookie */ 499 #endif 500 struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */ 501 struct mutex io_lock; /* Lock for serialising I/O on this mutex */ 502 struct rw_semaphore validate_lock; /* lock for validating this vnode */ 503 spinlock_t wb_lock; /* lock for wb_keys */ 504 spinlock_t lock; /* waitqueue/flags lock */ 505 unsigned long flags; 506 #define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */ 507 #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ 508 #define AFS_VNODE_DIR_VALID 2 /* Set if dir contents are valid */ 509 #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ 510 #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ 511 #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ 512 #define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ 513 #define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ 514 #define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */ 515 516 struct list_head wb_keys; /* List of keys available for writeback */ 517 struct list_head pending_locks; /* locks waiting to be granted */ 518 struct list_head granted_locks; /* locks granted on this file */ 519 struct delayed_work lock_work; /* work to be done in locking */ 520 struct key *lock_key; /* Key to be used in lock ops */ 521 enum afs_lock_state lock_state : 8; 522 afs_lock_type_t lock_type : 8; 523 524 /* outstanding callback notification on this file */ 525 struct afs_cb_interest *cb_interest; /* Server on which this resides */ 526 unsigned int cb_s_break; /* Mass break counter on ->server */ 527 unsigned int cb_v_break; /* Mass break counter on ->volume */ 528 unsigned int cb_break; /* Break counter on vnode */ 529 seqlock_t cb_lock; /* Lock for ->cb_interest, ->status, ->cb_*break */ 530 531 time64_t cb_expires_at; /* time at which callback expires */ 532 unsigned cb_version; /* callback version */ 533 afs_callback_type_t cb_type; /* type of callback */ 534 }; 535 536 /* 537 * cached security record for one user's attempt to access a vnode 538 */ 539 struct afs_permit { 540 struct key *key; /* RxRPC ticket holding a security context */ 541 afs_access_t access; /* CallerAccess value for this key */ 542 }; 543 544 /* 545 * Immutable cache of CallerAccess records from attempts to access vnodes. 546 * These may be shared between multiple vnodes. 547 */ 548 struct afs_permits { 549 struct rcu_head rcu; 550 struct hlist_node hash_node; /* Link in hash */ 551 unsigned long h; /* Hash value for this permit list */ 552 refcount_t usage; 553 unsigned short nr_permits; /* Number of records */ 554 bool invalidated; /* Invalidated due to key change */ 555 struct afs_permit permits[]; /* List of permits sorted by key pointer */ 556 }; 557 558 /* 559 * record of one of a system's set of network interfaces 560 */ 561 struct afs_interface { 562 struct in_addr address; /* IPv4 address bound to interface */ 563 struct in_addr netmask; /* netmask applied to address */ 564 unsigned mtu; /* MTU of interface */ 565 }; 566 567 /* 568 * Cursor for iterating over a server's address list. 569 */ 570 struct afs_addr_cursor { 571 struct afs_addr_list *alist; /* Current address list (pins ref) */ 572 struct sockaddr_rxrpc *addr; 573 u32 abort_code; 574 unsigned short start; /* Starting point in alist->addrs[] */ 575 unsigned short index; /* Wrapping offset from start to current addr */ 576 short error; 577 bool begun; /* T if we've begun iteration */ 578 bool responded; /* T if the current address responded */ 579 }; 580 581 /* 582 * Cursor for iterating over a set of fileservers. 583 */ 584 struct afs_fs_cursor { 585 struct afs_addr_cursor ac; 586 struct afs_vnode *vnode; 587 struct afs_server_list *server_list; /* Current server list (pins ref) */ 588 struct afs_cb_interest *cbi; /* Server on which this resides (pins ref) */ 589 struct key *key; /* Key for the server */ 590 unsigned int cb_break; /* cb_break + cb_s_break before the call */ 591 unsigned int cb_break_2; /* cb_break + cb_s_break (2nd vnode) */ 592 unsigned char start; /* Initial index in server list */ 593 unsigned char index; /* Number of servers tried beyond start */ 594 unsigned short flags; 595 #define AFS_FS_CURSOR_STOP 0x0001 /* Set to cease iteration */ 596 #define AFS_FS_CURSOR_VBUSY 0x0002 /* Set if seen VBUSY */ 597 #define AFS_FS_CURSOR_VMOVED 0x0004 /* Set if seen VMOVED */ 598 #define AFS_FS_CURSOR_VNOVOL 0x0008 /* Set if seen VNOVOL */ 599 #define AFS_FS_CURSOR_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ 600 #define AFS_FS_CURSOR_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ 601 }; 602 603 /* 604 * Cache auxiliary data. 605 */ 606 struct afs_vnode_cache_aux { 607 u64 data_version; 608 } __packed; 609 610 #include <trace/events/afs.h> 611 612 /*****************************************************************************/ 613 /* 614 * addr_list.c 615 */ 616 static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist) 617 { 618 if (alist) 619 refcount_inc(&alist->usage); 620 return alist; 621 } 622 extern struct afs_addr_list *afs_alloc_addrlist(unsigned int, 623 unsigned short, 624 unsigned short); 625 extern void afs_put_addrlist(struct afs_addr_list *); 626 extern struct afs_addr_list *afs_parse_text_addrs(const char *, size_t, char, 627 unsigned short, unsigned short); 628 extern struct afs_addr_list *afs_dns_query(struct afs_cell *, time64_t *); 629 extern bool afs_iterate_addresses(struct afs_addr_cursor *); 630 extern int afs_end_cursor(struct afs_addr_cursor *); 631 extern int afs_set_vl_cursor(struct afs_addr_cursor *, struct afs_cell *); 632 633 extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16); 634 extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16); 635 636 /* 637 * cache.c 638 */ 639 #ifdef CONFIG_AFS_FSCACHE 640 extern struct fscache_netfs afs_cache_netfs; 641 extern struct fscache_cookie_def afs_cell_cache_index_def; 642 extern struct fscache_cookie_def afs_volume_cache_index_def; 643 extern struct fscache_cookie_def afs_vnode_cache_index_def; 644 #else 645 #define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL) 646 #define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL) 647 #define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL) 648 #endif 649 650 /* 651 * callback.c 652 */ 653 extern void afs_init_callback_state(struct afs_server *); 654 extern void afs_break_callback(struct afs_vnode *); 655 extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break*); 656 657 extern int afs_register_server_cb_interest(struct afs_vnode *, 658 struct afs_server_list *, unsigned int); 659 extern void afs_put_cb_interest(struct afs_net *, struct afs_cb_interest *); 660 extern void afs_clear_callback_interests(struct afs_net *, struct afs_server_list *); 661 662 static inline struct afs_cb_interest *afs_get_cb_interest(struct afs_cb_interest *cbi) 663 { 664 if (cbi) 665 refcount_inc(&cbi->usage); 666 return cbi; 667 } 668 669 static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode) 670 { 671 return vnode->cb_break + vnode->cb_s_break + vnode->cb_v_break; 672 } 673 674 static inline unsigned int afs_cb_break_sum(struct afs_vnode *vnode, 675 struct afs_cb_interest *cbi) 676 { 677 return vnode->cb_break + cbi->server->cb_s_break + vnode->volume->cb_v_break; 678 } 679 680 /* 681 * cell.c 682 */ 683 extern int afs_cell_init(struct afs_net *, const char *); 684 extern struct afs_cell *afs_lookup_cell_rcu(struct afs_net *, const char *, unsigned); 685 extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned, 686 const char *, bool); 687 extern struct afs_cell *afs_get_cell(struct afs_cell *); 688 extern void afs_put_cell(struct afs_net *, struct afs_cell *); 689 extern void afs_manage_cells(struct work_struct *); 690 extern void afs_cells_timer(struct timer_list *); 691 extern void __net_exit afs_cell_purge(struct afs_net *); 692 693 /* 694 * cmservice.c 695 */ 696 extern bool afs_cm_incoming_call(struct afs_call *); 697 698 /* 699 * dir.c 700 */ 701 extern const struct file_operations afs_dir_file_operations; 702 extern const struct inode_operations afs_dir_inode_operations; 703 extern const struct address_space_operations afs_dir_aops; 704 extern const struct dentry_operations afs_fs_dentry_operations; 705 706 extern void afs_d_release(struct dentry *); 707 708 /* 709 * dir_edit.c 710 */ 711 extern void afs_edit_dir_add(struct afs_vnode *, struct qstr *, struct afs_fid *, 712 enum afs_edit_dir_reason); 713 extern void afs_edit_dir_remove(struct afs_vnode *, struct qstr *, enum afs_edit_dir_reason); 714 715 /* 716 * dynroot.c 717 */ 718 extern const struct file_operations afs_dynroot_file_operations; 719 extern const struct inode_operations afs_dynroot_inode_operations; 720 extern const struct dentry_operations afs_dynroot_dentry_operations; 721 722 extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *); 723 724 /* 725 * file.c 726 */ 727 extern const struct address_space_operations afs_fs_aops; 728 extern const struct inode_operations afs_file_inode_operations; 729 extern const struct file_operations afs_file_operations; 730 731 extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *); 732 extern void afs_put_wb_key(struct afs_wb_key *); 733 extern int afs_open(struct inode *, struct file *); 734 extern int afs_release(struct inode *, struct file *); 735 extern int afs_fetch_data(struct afs_vnode *, struct key *, struct afs_read *); 736 extern int afs_page_filler(void *, struct page *); 737 extern void afs_put_read(struct afs_read *); 738 739 /* 740 * flock.c 741 */ 742 extern struct workqueue_struct *afs_lock_manager; 743 744 extern void afs_lock_work(struct work_struct *); 745 extern void afs_lock_may_be_available(struct afs_vnode *); 746 extern int afs_lock(struct file *, int, struct file_lock *); 747 extern int afs_flock(struct file *, int, struct file_lock *); 748 749 /* 750 * fsclient.c 751 */ 752 #define AFS_VNODE_NOT_YET_SET 0x01 753 #define AFS_VNODE_META_CHANGED 0x02 754 #define AFS_VNODE_DATA_CHANGED 0x04 755 extern void afs_update_inode_from_status(struct afs_vnode *, struct afs_file_status *, 756 const afs_dataversion_t *, u8); 757 758 extern int afs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_volsync *, bool); 759 extern int afs_fs_give_up_callbacks(struct afs_net *, struct afs_server *); 760 extern int afs_fs_fetch_data(struct afs_fs_cursor *, struct afs_read *); 761 extern int afs_fs_create(struct afs_fs_cursor *, const char *, umode_t, u64, 762 struct afs_fid *, struct afs_file_status *, struct afs_callback *); 763 extern int afs_fs_remove(struct afs_fs_cursor *, const char *, bool, u64); 764 extern int afs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, u64); 765 extern int afs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, u64, 766 struct afs_fid *, struct afs_file_status *); 767 extern int afs_fs_rename(struct afs_fs_cursor *, const char *, 768 struct afs_vnode *, const char *, u64, u64); 769 extern int afs_fs_store_data(struct afs_fs_cursor *, struct address_space *, 770 pgoff_t, pgoff_t, unsigned, unsigned); 771 extern int afs_fs_setattr(struct afs_fs_cursor *, struct iattr *); 772 extern int afs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *); 773 extern int afs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t); 774 extern int afs_fs_extend_lock(struct afs_fs_cursor *); 775 extern int afs_fs_release_lock(struct afs_fs_cursor *); 776 extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, 777 struct afs_addr_cursor *, struct key *); 778 extern int afs_fs_get_capabilities(struct afs_net *, struct afs_server *, 779 struct afs_addr_cursor *, struct key *); 780 extern int afs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, 781 struct afs_fid *, struct afs_file_status *, 782 struct afs_callback *, unsigned int, 783 struct afs_volsync *); 784 extern int afs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, 785 struct afs_fid *, struct afs_file_status *, 786 struct afs_callback *, struct afs_volsync *); 787 788 /* 789 * inode.c 790 */ 791 extern int afs_fetch_status(struct afs_vnode *, struct key *, bool); 792 extern int afs_iget5_test(struct inode *, void *); 793 extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); 794 extern struct inode *afs_iget(struct super_block *, struct key *, 795 struct afs_fid *, struct afs_file_status *, 796 struct afs_callback *, 797 struct afs_cb_interest *); 798 extern void afs_zap_data(struct afs_vnode *); 799 extern int afs_validate(struct afs_vnode *, struct key *); 800 extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int); 801 extern int afs_setattr(struct dentry *, struct iattr *); 802 extern void afs_evict_inode(struct inode *); 803 extern int afs_drop_inode(struct inode *); 804 805 /* 806 * main.c 807 */ 808 extern struct workqueue_struct *afs_wq; 809 810 static inline struct afs_net *afs_d2net(struct dentry *dentry) 811 { 812 return &__afs_net; 813 } 814 815 static inline struct afs_net *afs_i2net(struct inode *inode) 816 { 817 return &__afs_net; 818 } 819 820 static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) 821 { 822 return &__afs_net; 823 } 824 825 static inline struct afs_net *afs_sock2net(struct sock *sk) 826 { 827 return &__afs_net; 828 } 829 830 static inline struct afs_net *afs_get_net(struct afs_net *net) 831 { 832 return net; 833 } 834 835 static inline void afs_put_net(struct afs_net *net) 836 { 837 } 838 839 static inline void __afs_stat(atomic_t *s) 840 { 841 atomic_inc(s); 842 } 843 844 #define afs_stat_v(vnode, n) __afs_stat(&afs_v2net(vnode)->n) 845 846 /* 847 * misc.c 848 */ 849 extern int afs_abort_to_error(u32); 850 851 /* 852 * mntpt.c 853 */ 854 extern const struct inode_operations afs_mntpt_inode_operations; 855 extern const struct inode_operations afs_autocell_inode_operations; 856 extern const struct file_operations afs_mntpt_file_operations; 857 858 extern struct vfsmount *afs_d_automount(struct path *); 859 extern void afs_mntpt_kill_timer(void); 860 861 /* 862 * netdevices.c 863 */ 864 extern int afs_get_ipv4_interfaces(struct afs_interface *, size_t, bool); 865 866 /* 867 * proc.c 868 */ 869 extern int __net_init afs_proc_init(struct afs_net *); 870 extern void __net_exit afs_proc_cleanup(struct afs_net *); 871 extern int afs_proc_cell_setup(struct afs_net *, struct afs_cell *); 872 extern void afs_proc_cell_remove(struct afs_net *, struct afs_cell *); 873 extern void afs_put_sysnames(struct afs_sysnames *); 874 875 /* 876 * rotate.c 877 */ 878 extern bool afs_begin_vnode_operation(struct afs_fs_cursor *, struct afs_vnode *, 879 struct key *); 880 extern bool afs_select_fileserver(struct afs_fs_cursor *); 881 extern bool afs_select_current_fileserver(struct afs_fs_cursor *); 882 extern int afs_end_vnode_operation(struct afs_fs_cursor *); 883 884 /* 885 * rxrpc.c 886 */ 887 extern struct workqueue_struct *afs_async_calls; 888 889 extern int __net_init afs_open_socket(struct afs_net *); 890 extern void __net_exit afs_close_socket(struct afs_net *); 891 extern void afs_charge_preallocation(struct work_struct *); 892 extern void afs_put_call(struct afs_call *); 893 extern int afs_queue_call_work(struct afs_call *); 894 extern long afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t, bool); 895 extern struct afs_call *afs_alloc_flat_call(struct afs_net *, 896 const struct afs_call_type *, 897 size_t, size_t); 898 extern void afs_flat_call_destructor(struct afs_call *); 899 extern void afs_send_empty_reply(struct afs_call *); 900 extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); 901 extern int afs_extract_data(struct afs_call *, void *, size_t, bool); 902 extern int afs_protocol_error(struct afs_call *, int); 903 904 static inline int afs_transfer_reply(struct afs_call *call) 905 { 906 return afs_extract_data(call, call->buffer, call->reply_max, false); 907 } 908 909 static inline bool afs_check_call_state(struct afs_call *call, 910 enum afs_call_state state) 911 { 912 return READ_ONCE(call->state) == state; 913 } 914 915 static inline bool afs_set_call_state(struct afs_call *call, 916 enum afs_call_state from, 917 enum afs_call_state to) 918 { 919 bool ok = false; 920 921 spin_lock_bh(&call->state_lock); 922 if (call->state == from) { 923 call->state = to; 924 trace_afs_call_state(call, from, to, 0, 0); 925 ok = true; 926 } 927 spin_unlock_bh(&call->state_lock); 928 return ok; 929 } 930 931 static inline void afs_set_call_complete(struct afs_call *call, 932 int error, u32 remote_abort) 933 { 934 enum afs_call_state state; 935 bool ok = false; 936 937 spin_lock_bh(&call->state_lock); 938 state = call->state; 939 if (state != AFS_CALL_COMPLETE) { 940 call->abort_code = remote_abort; 941 call->error = error; 942 call->state = AFS_CALL_COMPLETE; 943 trace_afs_call_state(call, state, AFS_CALL_COMPLETE, 944 error, remote_abort); 945 ok = true; 946 } 947 spin_unlock_bh(&call->state_lock); 948 if (ok) 949 trace_afs_call_done(call); 950 } 951 952 /* 953 * security.c 954 */ 955 extern void afs_put_permits(struct afs_permits *); 956 extern void afs_clear_permits(struct afs_vnode *); 957 extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int); 958 extern void afs_zap_permits(struct rcu_head *); 959 extern struct key *afs_request_key(struct afs_cell *); 960 extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); 961 extern int afs_permission(struct inode *, int); 962 extern void __exit afs_clean_up_permit_cache(void); 963 964 /* 965 * server.c 966 */ 967 extern spinlock_t afs_server_peer_lock; 968 969 static inline struct afs_server *afs_get_server(struct afs_server *server) 970 { 971 atomic_inc(&server->usage); 972 return server; 973 } 974 975 extern struct afs_server *afs_find_server(struct afs_net *, 976 const struct sockaddr_rxrpc *); 977 extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); 978 extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *); 979 extern void afs_put_server(struct afs_net *, struct afs_server *); 980 extern void afs_manage_servers(struct work_struct *); 981 extern void afs_servers_timer(struct timer_list *); 982 extern void __net_exit afs_purge_servers(struct afs_net *); 983 extern bool afs_probe_fileserver(struct afs_fs_cursor *); 984 extern bool afs_check_server_record(struct afs_fs_cursor *, struct afs_server *); 985 986 /* 987 * server_list.c 988 */ 989 static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist) 990 { 991 refcount_inc(&slist->usage); 992 return slist; 993 } 994 995 extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); 996 extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, 997 struct afs_vldb_entry *, 998 u8); 999 extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); 1000 1001 /* 1002 * super.c 1003 */ 1004 extern int __init afs_fs_init(void); 1005 extern void __exit afs_fs_exit(void); 1006 1007 /* 1008 * vlclient.c 1009 */ 1010 extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_net *, 1011 struct afs_addr_cursor *, 1012 struct key *, const char *, int); 1013 extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_net *, struct afs_addr_cursor *, 1014 struct key *, const uuid_t *); 1015 extern int afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, struct key *); 1016 extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_net *, struct afs_addr_cursor *, 1017 struct key *, const uuid_t *); 1018 1019 /* 1020 * volume.c 1021 */ 1022 static inline struct afs_volume *__afs_get_volume(struct afs_volume *volume) 1023 { 1024 if (volume) 1025 atomic_inc(&volume->usage); 1026 return volume; 1027 } 1028 1029 extern struct afs_volume *afs_create_volume(struct afs_mount_params *); 1030 extern void afs_activate_volume(struct afs_volume *); 1031 extern void afs_deactivate_volume(struct afs_volume *); 1032 extern void afs_put_volume(struct afs_cell *, struct afs_volume *); 1033 extern int afs_check_volume_status(struct afs_volume *, struct key *); 1034 1035 /* 1036 * write.c 1037 */ 1038 extern int afs_set_page_dirty(struct page *); 1039 extern int afs_write_begin(struct file *file, struct address_space *mapping, 1040 loff_t pos, unsigned len, unsigned flags, 1041 struct page **pagep, void **fsdata); 1042 extern int afs_write_end(struct file *file, struct address_space *mapping, 1043 loff_t pos, unsigned len, unsigned copied, 1044 struct page *page, void *fsdata); 1045 extern int afs_writepage(struct page *, struct writeback_control *); 1046 extern int afs_writepages(struct address_space *, struct writeback_control *); 1047 extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *); 1048 extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); 1049 extern int afs_fsync(struct file *, loff_t, loff_t, int); 1050 extern int afs_page_mkwrite(struct vm_fault *); 1051 extern void afs_prune_wb_keys(struct afs_vnode *); 1052 extern int afs_launder_page(struct page *); 1053 1054 /* 1055 * xattr.c 1056 */ 1057 extern const struct xattr_handler *afs_xattr_handlers[]; 1058 extern ssize_t afs_listxattr(struct dentry *, char *, size_t); 1059 1060 1061 /* 1062 * Miscellaneous inline functions. 1063 */ 1064 static inline struct afs_vnode *AFS_FS_I(struct inode *inode) 1065 { 1066 return container_of(inode, struct afs_vnode, vfs_inode); 1067 } 1068 1069 static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) 1070 { 1071 return &vnode->vfs_inode; 1072 } 1073 1074 static inline void afs_vnode_commit_status(struct afs_fs_cursor *fc, 1075 struct afs_vnode *vnode, 1076 unsigned int cb_break) 1077 { 1078 if (fc->ac.error == 0) 1079 afs_cache_permit(vnode, fc->key, cb_break); 1080 } 1081 1082 static inline void afs_check_for_remote_deletion(struct afs_fs_cursor *fc, 1083 struct afs_vnode *vnode) 1084 { 1085 if (fc->ac.error == -ENOENT) { 1086 set_bit(AFS_VNODE_DELETED, &vnode->flags); 1087 afs_break_callback(vnode); 1088 } 1089 } 1090 1091 1092 /*****************************************************************************/ 1093 /* 1094 * debug tracing 1095 */ 1096 extern unsigned afs_debug; 1097 1098 #define dbgprintk(FMT,...) \ 1099 printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 1100 1101 #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 1102 #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 1103 #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 1104 1105 1106 #if defined(__KDEBUG) 1107 #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 1108 #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 1109 #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 1110 1111 #elif defined(CONFIG_AFS_DEBUG) 1112 #define AFS_DEBUG_KENTER 0x01 1113 #define AFS_DEBUG_KLEAVE 0x02 1114 #define AFS_DEBUG_KDEBUG 0x04 1115 1116 #define _enter(FMT,...) \ 1117 do { \ 1118 if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ 1119 kenter(FMT,##__VA_ARGS__); \ 1120 } while (0) 1121 1122 #define _leave(FMT,...) \ 1123 do { \ 1124 if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ 1125 kleave(FMT,##__VA_ARGS__); \ 1126 } while (0) 1127 1128 #define _debug(FMT,...) \ 1129 do { \ 1130 if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ 1131 kdebug(FMT,##__VA_ARGS__); \ 1132 } while (0) 1133 1134 #else 1135 #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 1136 #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 1137 #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 1138 #endif 1139 1140 /* 1141 * debug assertion checking 1142 */ 1143 #if 1 // defined(__KDEBUGALL) 1144 1145 #define ASSERT(X) \ 1146 do { \ 1147 if (unlikely(!(X))) { \ 1148 printk(KERN_ERR "\n"); \ 1149 printk(KERN_ERR "AFS: Assertion failed\n"); \ 1150 BUG(); \ 1151 } \ 1152 } while(0) 1153 1154 #define ASSERTCMP(X, OP, Y) \ 1155 do { \ 1156 if (unlikely(!((X) OP (Y)))) { \ 1157 printk(KERN_ERR "\n"); \ 1158 printk(KERN_ERR "AFS: Assertion failed\n"); \ 1159 printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 1160 (unsigned long)(X), (unsigned long)(Y)); \ 1161 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 1162 (unsigned long)(X), (unsigned long)(Y)); \ 1163 BUG(); \ 1164 } \ 1165 } while(0) 1166 1167 #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1168 do { \ 1169 if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ 1170 printk(KERN_ERR "\n"); \ 1171 printk(KERN_ERR "AFS: Assertion failed\n"); \ 1172 printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ 1173 (unsigned long)(L), (unsigned long)(N), \ 1174 (unsigned long)(H)); \ 1175 printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ 1176 (unsigned long)(L), (unsigned long)(N), \ 1177 (unsigned long)(H)); \ 1178 BUG(); \ 1179 } \ 1180 } while(0) 1181 1182 #define ASSERTIF(C, X) \ 1183 do { \ 1184 if (unlikely((C) && !(X))) { \ 1185 printk(KERN_ERR "\n"); \ 1186 printk(KERN_ERR "AFS: Assertion failed\n"); \ 1187 BUG(); \ 1188 } \ 1189 } while(0) 1190 1191 #define ASSERTIFCMP(C, X, OP, Y) \ 1192 do { \ 1193 if (unlikely((C) && !((X) OP (Y)))) { \ 1194 printk(KERN_ERR "\n"); \ 1195 printk(KERN_ERR "AFS: Assertion failed\n"); \ 1196 printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 1197 (unsigned long)(X), (unsigned long)(Y)); \ 1198 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 1199 (unsigned long)(X), (unsigned long)(Y)); \ 1200 BUG(); \ 1201 } \ 1202 } while(0) 1203 1204 #else 1205 1206 #define ASSERT(X) \ 1207 do { \ 1208 } while(0) 1209 1210 #define ASSERTCMP(X, OP, Y) \ 1211 do { \ 1212 } while(0) 1213 1214 #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1215 do { \ 1216 } while(0) 1217 1218 #define ASSERTIF(C, X) \ 1219 do { \ 1220 } while(0) 1221 1222 #define ASSERTIFCMP(C, X, OP, Y) \ 1223 do { \ 1224 } while(0) 1225 1226 #endif /* __KDEBUGALL */ 1227