Commit | Line | Data |
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ec26815a | 1 | /* internal AFS stuff |
1da177e4 | 2 | * |
08e0e7c8 | 3 | * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. |
1da177e4 LT |
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 | ||
1da177e4 LT |
12 | #include <linux/compiler.h> |
13 | #include <linux/kernel.h> | |
8a79790b | 14 | #include <linux/ktime.h> |
1da177e4 LT |
15 | #include <linux/fs.h> |
16 | #include <linux/pagemap.h> | |
08e0e7c8 | 17 | #include <linux/rxrpc.h> |
00d3b7a4 | 18 | #include <linux/key.h> |
e8edc6e0 | 19 | #include <linux/workqueue.h> |
00c541ea | 20 | #include <linux/sched.h> |
80e50be4 | 21 | #include <linux/fscache.h> |
e1da0222 | 22 | #include <linux/backing-dev.h> |
ff548773 | 23 | #include <linux/uuid.h> |
f044c884 | 24 | #include <net/net_namespace.h> |
8324f0bc | 25 | #include <net/af_rxrpc.h> |
00c541ea | 26 | |
08e0e7c8 DH |
27 | #include "afs.h" |
28 | #include "afs_vl.h" | |
29 | ||
30 | #define AFS_CELL_MAX_ADDRS 15 | |
31 | ||
31143d5d | 32 | struct pagevec; |
08e0e7c8 DH |
33 | struct afs_call; |
34 | ||
35 | typedef enum { | |
36 | AFS_VL_NEW, /* new, uninitialised record */ | |
37 | AFS_VL_CREATING, /* creating record */ | |
38 | AFS_VL_VALID, /* record is pending */ | |
39 | AFS_VL_NO_VOLUME, /* no such volume available */ | |
40 | AFS_VL_UPDATING, /* update in progress */ | |
41 | AFS_VL_VOLUME_DELETED, /* volume was deleted */ | |
42 | AFS_VL_UNCERTAIN, /* uncertain state (update failed) */ | |
43 | } __attribute__((packed)) afs_vlocation_state_t; | |
1da177e4 | 44 | |
00d3b7a4 DH |
45 | struct afs_mount_params { |
46 | bool rwpath; /* T if the parent should be considered R/W */ | |
47 | bool force; /* T to force cell type */ | |
bec5eb61 | 48 | bool autocell; /* T if set auto mount operation */ |
00d3b7a4 DH |
49 | afs_voltype_t type; /* type of volume requested */ |
50 | int volnamesz; /* size of volume name */ | |
51 | const char *volname; /* name of volume to mount */ | |
f044c884 | 52 | struct afs_net *net; /* Network namespace in effect */ |
00d3b7a4 DH |
53 | struct afs_cell *cell; /* cell in which to find volume */ |
54 | struct afs_volume *volume; /* volume record */ | |
55 | struct key *key; /* key to use for secure mounting */ | |
56 | }; | |
57 | ||
8e8d7f13 DH |
58 | enum afs_call_state { |
59 | AFS_CALL_REQUESTING, /* request is being sent for outgoing call */ | |
60 | AFS_CALL_AWAIT_REPLY, /* awaiting reply to outgoing call */ | |
61 | AFS_CALL_AWAIT_OP_ID, /* awaiting op ID on incoming call */ | |
62 | AFS_CALL_AWAIT_REQUEST, /* awaiting request data on incoming call */ | |
63 | AFS_CALL_REPLYING, /* replying to incoming call */ | |
64 | AFS_CALL_AWAIT_ACK, /* awaiting final ACK of incoming call */ | |
65 | AFS_CALL_COMPLETE, /* Completed or failed */ | |
66 | }; | |
f044c884 | 67 | |
08e0e7c8 DH |
68 | /* |
69 | * a record of an in-progress RxRPC call | |
70 | */ | |
71 | struct afs_call { | |
72 | const struct afs_call_type *type; /* type of call */ | |
08e0e7c8 | 73 | wait_queue_head_t waitq; /* processes awaiting completion */ |
341f741f | 74 | struct work_struct async_work; /* async I/O processor */ |
08e0e7c8 | 75 | struct work_struct work; /* actual work processor */ |
08e0e7c8 DH |
76 | struct rxrpc_call *rxcall; /* RxRPC call handle */ |
77 | struct key *key; /* security for this call */ | |
f044c884 | 78 | struct afs_net *net; /* The network namespace */ |
08e0e7c8 DH |
79 | struct afs_server *server; /* server affected by incoming CM call */ |
80 | void *request; /* request data (first part) */ | |
31143d5d DH |
81 | struct address_space *mapping; /* page set */ |
82 | struct afs_writeback *wb; /* writeback being performed */ | |
08e0e7c8 DH |
83 | void *buffer; /* reply receive buffer */ |
84 | void *reply; /* reply buffer (first part) */ | |
85 | void *reply2; /* reply buffer (second part) */ | |
86 | void *reply3; /* reply buffer (third part) */ | |
260a9803 | 87 | void *reply4; /* reply buffer (fourth part) */ |
31143d5d DH |
88 | pgoff_t first; /* first page in mapping to deal with */ |
89 | pgoff_t last; /* last page in mapping to deal with */ | |
d001648e | 90 | size_t offset; /* offset into received data store */ |
341f741f | 91 | atomic_t usage; |
8e8d7f13 | 92 | enum afs_call_state state; |
08e0e7c8 | 93 | int error; /* error code */ |
d001648e | 94 | u32 abort_code; /* Remote abort ID or 0 */ |
08e0e7c8 DH |
95 | unsigned request_size; /* size of request data */ |
96 | unsigned reply_max; /* maximum size of reply */ | |
31143d5d | 97 | unsigned first_offset; /* offset into mapping[first] */ |
bcd89270 MD |
98 | union { |
99 | unsigned last_to; /* amount of mapping[last] */ | |
100 | unsigned count2; /* count used in unmarshalling */ | |
101 | }; | |
08e0e7c8 DH |
102 | unsigned char unmarshall; /* unmarshalling phase */ |
103 | bool incoming; /* T if incoming call */ | |
31143d5d | 104 | bool send_pages; /* T if data from mapping should be sent */ |
d001648e | 105 | bool need_attention; /* T if RxRPC poked us */ |
56ff9c83 | 106 | bool async; /* T if asynchronous */ |
a68f4a27 | 107 | bool upgrade; /* T to request service upgrade */ |
08e0e7c8 DH |
108 | u16 service_id; /* RxRPC service ID to call */ |
109 | __be16 port; /* target UDP port */ | |
50a2c953 | 110 | u32 operation_ID; /* operation ID for an incoming call */ |
08e0e7c8 DH |
111 | u32 count; /* count for use in unmarshalling */ |
112 | __be32 tmp; /* place to extract temporary data */ | |
31143d5d | 113 | afs_dataversion_t store_version; /* updated version expected from store */ |
08e0e7c8 DH |
114 | }; |
115 | ||
116 | struct afs_call_type { | |
00d3b7a4 DH |
117 | const char *name; |
118 | ||
08e0e7c8 DH |
119 | /* deliver request or reply data to an call |
120 | * - returning an error will cause the call to be aborted | |
121 | */ | |
d001648e | 122 | int (*deliver)(struct afs_call *call); |
08e0e7c8 DH |
123 | |
124 | /* map an abort code to an error number */ | |
125 | int (*abort_to_error)(u32 abort_code); | |
126 | ||
127 | /* clean up a call */ | |
128 | void (*destructor)(struct afs_call *call); | |
341f741f DH |
129 | |
130 | /* Work function */ | |
131 | void (*work)(struct work_struct *work); | |
08e0e7c8 DH |
132 | }; |
133 | ||
196ee9cd DH |
134 | /* |
135 | * Record of an outstanding read operation on a vnode. | |
136 | */ | |
137 | struct afs_read { | |
138 | loff_t pos; /* Where to start reading */ | |
e8e581a8 | 139 | loff_t len; /* How much we're asking for */ |
196ee9cd | 140 | loff_t actual_len; /* How much we're actually getting */ |
6a0e3999 | 141 | loff_t remain; /* Amount remaining */ |
196ee9cd | 142 | atomic_t usage; |
196ee9cd | 143 | unsigned int index; /* Which page we're reading into */ |
196ee9cd DH |
144 | unsigned int nr_pages; |
145 | void (*page_done)(struct afs_call *, struct afs_read *); | |
146 | struct page *pages[]; | |
147 | }; | |
148 | ||
31143d5d DH |
149 | /* |
150 | * record of an outstanding writeback on a vnode | |
151 | */ | |
152 | struct afs_writeback { | |
153 | struct list_head link; /* link in vnode->writebacks */ | |
154 | struct work_struct writer; /* work item to perform the writeback */ | |
155 | struct afs_vnode *vnode; /* vnode to which this write applies */ | |
156 | struct key *key; /* owner of this write */ | |
157 | wait_queue_head_t waitq; /* completion and ready wait queue */ | |
158 | pgoff_t first; /* first page in batch */ | |
159 | pgoff_t point; /* last page in current store op */ | |
160 | pgoff_t last; /* last page in batch (inclusive) */ | |
161 | unsigned offset_first; /* offset into first page of start of write */ | |
162 | unsigned to_last; /* offset into last page of end of write */ | |
163 | int num_conflicts; /* count of conflicting writes in list */ | |
164 | int usage; | |
165 | bool conflicts; /* T if has dependent conflicts */ | |
166 | enum { | |
167 | AFS_WBACK_SYNCING, /* synchronisation being performed */ | |
168 | AFS_WBACK_PENDING, /* write pending */ | |
169 | AFS_WBACK_CONFLICTING, /* conflicting writes posted */ | |
170 | AFS_WBACK_WRITING, /* writing back */ | |
171 | AFS_WBACK_COMPLETE /* the writeback record has been unlinked */ | |
172 | } state __attribute__((packed)); | |
173 | }; | |
174 | ||
08e0e7c8 DH |
175 | /* |
176 | * AFS superblock private data | |
177 | * - there's one superblock per volume | |
178 | */ | |
179 | struct afs_super_info { | |
f044c884 | 180 | struct afs_net *net; /* Network namespace */ |
08e0e7c8 DH |
181 | struct afs_volume *volume; /* volume record */ |
182 | char rwparent; /* T if parent is R/W AFS volume */ | |
183 | }; | |
1da177e4 | 184 | |
08e0e7c8 DH |
185 | static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) |
186 | { | |
187 | return sb->s_fs_info; | |
1da177e4 LT |
188 | } |
189 | ||
08e0e7c8 DH |
190 | extern struct file_system_type afs_fs_type; |
191 | ||
192 | /* | |
193 | * entry in the cached cell catalogue | |
194 | */ | |
195 | struct afs_cache_cell { | |
00d3b7a4 DH |
196 | char name[AFS_MAXCELLNAME]; /* cell name (padded with NULs) */ |
197 | struct in_addr vl_servers[15]; /* cached cell VL servers */ | |
08e0e7c8 DH |
198 | }; |
199 | ||
f044c884 DH |
200 | /* |
201 | * AFS network namespace record. | |
202 | */ | |
203 | struct afs_net { | |
204 | struct afs_uuid uuid; | |
205 | bool live; /* F if this namespace is being removed */ | |
206 | ||
207 | /* AF_RXRPC I/O stuff */ | |
208 | struct socket *socket; | |
209 | struct afs_call *spare_incoming_call; | |
210 | struct work_struct charge_preallocation_work; | |
211 | struct mutex socket_mutex; | |
212 | atomic_t nr_outstanding_calls; | |
213 | atomic_t nr_superblocks; | |
214 | ||
215 | /* Cell database */ | |
216 | struct list_head cells; | |
217 | struct afs_cell *ws_cell; | |
218 | rwlock_t cells_lock; | |
219 | struct rw_semaphore cells_sem; | |
220 | wait_queue_head_t cells_freeable_wq; | |
221 | ||
222 | struct rw_semaphore proc_cells_sem; | |
223 | struct list_head proc_cells; | |
224 | ||
225 | /* Volume location database */ | |
226 | struct list_head vl_updates; /* VL records in need-update order */ | |
227 | struct list_head vl_graveyard; /* Inactive VL records */ | |
228 | struct delayed_work vl_reaper; | |
229 | struct delayed_work vl_updater; | |
230 | spinlock_t vl_updates_lock; | |
231 | spinlock_t vl_graveyard_lock; | |
232 | ||
233 | /* File locking renewal management */ | |
234 | struct mutex lock_manager_mutex; | |
235 | ||
236 | /* Server database */ | |
237 | struct rb_root servers; /* Active servers */ | |
238 | rwlock_t servers_lock; | |
239 | struct list_head server_graveyard; /* Inactive server LRU list */ | |
240 | spinlock_t server_graveyard_lock; | |
59fa1c4a DH |
241 | struct timer_list server_timer; |
242 | struct work_struct server_reaper; | |
243 | atomic_t servers_outstanding; | |
f044c884 DH |
244 | |
245 | /* Misc */ | |
246 | struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ | |
247 | }; | |
248 | ||
249 | extern struct afs_net __afs_net;// Dummy AFS network namespace; TODO: replace with real netns | |
250 | ||
08e0e7c8 DH |
251 | /* |
252 | * AFS cell record | |
253 | */ | |
254 | struct afs_cell { | |
255 | atomic_t usage; | |
256 | struct list_head link; /* main cell list link */ | |
f044c884 | 257 | struct afs_net *net; /* The network namespace */ |
00d3b7a4 | 258 | struct key *anonymous_key; /* anonymous user key for this cell */ |
08e0e7c8 | 259 | struct list_head proc_link; /* /proc cell list link */ |
9b3f26c9 DH |
260 | #ifdef CONFIG_AFS_FSCACHE |
261 | struct fscache_cookie *cache; /* caching cookie */ | |
08e0e7c8 DH |
262 | #endif |
263 | ||
264 | /* server record management */ | |
265 | rwlock_t servers_lock; /* active server list lock */ | |
266 | struct list_head servers; /* active server list */ | |
267 | ||
268 | /* volume location record management */ | |
269 | struct rw_semaphore vl_sem; /* volume management serialisation semaphore */ | |
270 | struct list_head vl_list; /* cell's active VL record list */ | |
271 | spinlock_t vl_lock; /* vl_list lock */ | |
272 | unsigned short vl_naddrs; /* number of VL servers in addr list */ | |
273 | unsigned short vl_curr_svix; /* current server index */ | |
274 | struct in_addr vl_addrs[AFS_CELL_MAX_ADDRS]; /* cell VL server addresses */ | |
275 | ||
276 | char name[0]; /* cell name - must go last */ | |
277 | }; | |
278 | ||
279 | /* | |
280 | * entry in the cached volume location catalogue | |
281 | */ | |
282 | struct afs_cache_vlocation { | |
00d3b7a4 DH |
283 | /* volume name (lowercase, padded with NULs) */ |
284 | uint8_t name[AFS_MAXVOLNAME + 1]; | |
285 | ||
08e0e7c8 DH |
286 | uint8_t nservers; /* number of entries used in servers[] */ |
287 | uint8_t vidmask; /* voltype mask for vid[] */ | |
288 | uint8_t srvtmask[8]; /* voltype masks for servers[] */ | |
289 | #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ | |
290 | #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ | |
291 | #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ | |
292 | ||
293 | afs_volid_t vid[3]; /* volume IDs for R/W, R/O and Bak volumes */ | |
294 | struct in_addr servers[8]; /* fileserver addresses */ | |
295 | time_t rtime; /* last retrieval time */ | |
296 | }; | |
297 | ||
298 | /* | |
299 | * volume -> vnode hash table entry | |
300 | */ | |
301 | struct afs_cache_vhash { | |
302 | afs_voltype_t vtype; /* which volume variation */ | |
303 | uint8_t hash_bucket; /* which hash bucket this represents */ | |
304 | } __attribute__((packed)); | |
305 | ||
306 | /* | |
307 | * AFS volume location record | |
308 | */ | |
309 | struct afs_vlocation { | |
310 | atomic_t usage; | |
8a79790b | 311 | time64_t time_of_death; /* time at which put reduced usage to 0 */ |
08e0e7c8 DH |
312 | struct list_head link; /* link in cell volume location list */ |
313 | struct list_head grave; /* link in master graveyard list */ | |
314 | struct list_head update; /* link in master update list */ | |
315 | struct afs_cell *cell; /* cell to which volume belongs */ | |
9b3f26c9 DH |
316 | #ifdef CONFIG_AFS_FSCACHE |
317 | struct fscache_cookie *cache; /* caching cookie */ | |
08e0e7c8 DH |
318 | #endif |
319 | struct afs_cache_vlocation vldb; /* volume information DB record */ | |
320 | struct afs_volume *vols[3]; /* volume access record pointer (index by type) */ | |
321 | wait_queue_head_t waitq; /* status change waitqueue */ | |
8a79790b | 322 | time64_t update_at; /* time at which record should be updated */ |
39bf0949 | 323 | spinlock_t lock; /* access lock */ |
08e0e7c8 DH |
324 | afs_vlocation_state_t state; /* volume location state */ |
325 | unsigned short upd_rej_cnt; /* ENOMEDIUM count during update */ | |
326 | unsigned short upd_busy_cnt; /* EBUSY count during update */ | |
327 | bool valid; /* T if valid */ | |
328 | }; | |
329 | ||
330 | /* | |
331 | * AFS fileserver record | |
332 | */ | |
333 | struct afs_server { | |
334 | atomic_t usage; | |
8a79790b | 335 | time64_t time_of_death; /* time at which put reduced usage to 0 */ |
08e0e7c8 DH |
336 | struct in_addr addr; /* server address */ |
337 | struct afs_cell *cell; /* cell in which server resides */ | |
338 | struct list_head link; /* link in cell's server list */ | |
339 | struct list_head grave; /* link in master graveyard list */ | |
340 | struct rb_node master_rb; /* link in master by-addr tree */ | |
341 | struct rw_semaphore sem; /* access lock */ | |
342 | ||
343 | /* file service access */ | |
344 | struct rb_root fs_vnodes; /* vnodes backed by this server (ordered by FID) */ | |
345 | unsigned long fs_act_jif; /* time at which last activity occurred */ | |
346 | unsigned long fs_dead_jif; /* time at which no longer to be considered dead */ | |
347 | spinlock_t fs_lock; /* access lock */ | |
348 | int fs_state; /* 0 or reason FS currently marked dead (-errno) */ | |
349 | ||
350 | /* callback promise management */ | |
351 | struct rb_root cb_promises; /* vnode expiration list (ordered earliest first) */ | |
352 | struct delayed_work cb_updater; /* callback updater */ | |
353 | struct delayed_work cb_break_work; /* collected break dispatcher */ | |
354 | wait_queue_head_t cb_break_waitq; /* space available in cb_break waitqueue */ | |
355 | spinlock_t cb_lock; /* access lock */ | |
356 | struct afs_callback cb_break[64]; /* ring of callbacks awaiting breaking */ | |
357 | atomic_t cb_break_n; /* number of pending breaks */ | |
358 | u8 cb_break_head; /* head of callback breaking ring */ | |
359 | u8 cb_break_tail; /* tail of callback breaking ring */ | |
360 | }; | |
361 | ||
362 | /* | |
363 | * AFS volume access record | |
364 | */ | |
365 | struct afs_volume { | |
366 | atomic_t usage; | |
367 | struct afs_cell *cell; /* cell to which belongs (unrefd ptr) */ | |
368 | struct afs_vlocation *vlocation; /* volume location */ | |
9b3f26c9 DH |
369 | #ifdef CONFIG_AFS_FSCACHE |
370 | struct fscache_cookie *cache; /* caching cookie */ | |
08e0e7c8 DH |
371 | #endif |
372 | afs_volid_t vid; /* volume ID */ | |
373 | afs_voltype_t type; /* type of volume */ | |
374 | char type_force; /* force volume type (suppress R/O -> R/W) */ | |
375 | unsigned short nservers; /* number of server slots filled */ | |
376 | unsigned short rjservers; /* number of servers discarded due to -ENOMEDIUM */ | |
377 | struct afs_server *servers[8]; /* servers on which volume resides (ordered) */ | |
378 | struct rw_semaphore server_sem; /* lock for accessing current server */ | |
379 | }; | |
380 | ||
381 | /* | |
382 | * vnode catalogue entry | |
383 | */ | |
384 | struct afs_cache_vnode { | |
385 | afs_vnodeid_t vnode_id; /* vnode ID */ | |
386 | unsigned vnode_unique; /* vnode ID uniquifier */ | |
387 | afs_dataversion_t data_version; /* data version */ | |
388 | }; | |
389 | ||
390 | /* | |
391 | * AFS inode private data | |
392 | */ | |
393 | struct afs_vnode { | |
394 | struct inode vfs_inode; /* the VFS's inode record */ | |
395 | ||
396 | struct afs_volume *volume; /* volume on which vnode resides */ | |
397 | struct afs_server *server; /* server currently supplying this file */ | |
398 | struct afs_fid fid; /* the file identifier for this inode */ | |
399 | struct afs_file_status status; /* AFS status info for this file */ | |
9b3f26c9 DH |
400 | #ifdef CONFIG_AFS_FSCACHE |
401 | struct fscache_cookie *cache; /* caching cookie */ | |
08e0e7c8 | 402 | #endif |
00d3b7a4 DH |
403 | struct afs_permits *permits; /* cache of permits so far obtained */ |
404 | struct mutex permits_lock; /* lock for altering permits list */ | |
260a9803 | 405 | struct mutex validate_lock; /* lock for validating this vnode */ |
08e0e7c8 | 406 | wait_queue_head_t update_waitq; /* status fetch waitqueue */ |
260a9803 | 407 | int update_cnt; /* number of outstanding ops that will update the |
08e0e7c8 | 408 | * status */ |
31143d5d | 409 | spinlock_t writeback_lock; /* lock for writebacks */ |
08e0e7c8 DH |
410 | spinlock_t lock; /* waitqueue/flags lock */ |
411 | unsigned long flags; | |
412 | #define AFS_VNODE_CB_BROKEN 0 /* set if vnode's callback was broken */ | |
260a9803 | 413 | #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ |
08e0e7c8 DH |
414 | #define AFS_VNODE_MODIFIED 2 /* set if vnode's data modified */ |
415 | #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ | |
416 | #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ | |
417 | #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ | |
e8d6c554 DH |
418 | #define AFS_VNODE_LOCKING 6 /* set if waiting for lock on vnode */ |
419 | #define AFS_VNODE_READLOCKED 7 /* set if vnode is read-locked on the server */ | |
420 | #define AFS_VNODE_WRITELOCKED 8 /* set if vnode is write-locked on the server */ | |
421 | #define AFS_VNODE_UNLOCKING 9 /* set if vnode is being unlocked on the server */ | |
bec5eb61 | 422 | #define AFS_VNODE_AUTOCELL 10 /* set if Vnode is an auto mount point */ |
423 | #define AFS_VNODE_PSEUDODIR 11 /* set if Vnode is a pseudo directory */ | |
08e0e7c8 | 424 | |
00d3b7a4 DH |
425 | long acl_order; /* ACL check count (callback break count) */ |
426 | ||
31143d5d | 427 | struct list_head writebacks; /* alterations in pagecache that need writing */ |
e8d6c554 DH |
428 | struct list_head pending_locks; /* locks waiting to be granted */ |
429 | struct list_head granted_locks; /* locks granted on this file */ | |
430 | struct delayed_work lock_work; /* work to be done in locking */ | |
431 | struct key *unlock_key; /* key to be used in unlocking */ | |
31143d5d | 432 | |
08e0e7c8 DH |
433 | /* outstanding callback notification on this file */ |
434 | struct rb_node server_rb; /* link in server->fs_vnodes */ | |
435 | struct rb_node cb_promise; /* link in server->cb_promises */ | |
436 | struct work_struct cb_broken_work; /* work to be done on callback break */ | |
56e71431 TR |
437 | time64_t cb_expires; /* time at which callback expires */ |
438 | time64_t cb_expires_at; /* time used to order cb_promise */ | |
08e0e7c8 DH |
439 | unsigned cb_version; /* callback version */ |
440 | unsigned cb_expiry; /* callback expiry time */ | |
441 | afs_callback_type_t cb_type; /* type of callback */ | |
442 | bool cb_promised; /* true if promise still holds */ | |
443 | }; | |
444 | ||
00d3b7a4 DH |
445 | /* |
446 | * cached security record for one user's attempt to access a vnode | |
447 | */ | |
448 | struct afs_permit { | |
449 | struct key *key; /* RxRPC ticket holding a security context */ | |
450 | afs_access_t access_mask; /* access mask for this key */ | |
451 | }; | |
452 | ||
453 | /* | |
454 | * cache of security records from attempts to access a vnode | |
455 | */ | |
456 | struct afs_permits { | |
457 | struct rcu_head rcu; /* disposal procedure */ | |
458 | int count; /* number of records */ | |
459 | struct afs_permit permits[0]; /* the permits so far examined */ | |
460 | }; | |
461 | ||
b908fe6b DH |
462 | /* |
463 | * record of one of a system's set of network interfaces | |
464 | */ | |
465 | struct afs_interface { | |
b908fe6b DH |
466 | struct in_addr address; /* IPv4 address bound to interface */ |
467 | struct in_addr netmask; /* netmask applied to address */ | |
468 | unsigned mtu; /* MTU of interface */ | |
469 | }; | |
470 | ||
08e0e7c8 | 471 | /*****************************************************************************/ |
9b3f26c9 DH |
472 | /* |
473 | * cache.c | |
474 | */ | |
475 | #ifdef CONFIG_AFS_FSCACHE | |
476 | extern struct fscache_netfs afs_cache_netfs; | |
477 | extern struct fscache_cookie_def afs_cell_cache_index_def; | |
478 | extern struct fscache_cookie_def afs_vlocation_cache_index_def; | |
479 | extern struct fscache_cookie_def afs_volume_cache_index_def; | |
480 | extern struct fscache_cookie_def afs_vnode_cache_index_def; | |
481 | #else | |
482 | #define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL) | |
483 | #define afs_vlocation_cache_index_def (*(struct fscache_cookie_def *) NULL) | |
484 | #define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL) | |
485 | #define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL) | |
486 | #endif | |
487 | ||
08e0e7c8 DH |
488 | /* |
489 | * callback.c | |
490 | */ | |
f044c884 DH |
491 | extern struct workqueue_struct *afs_callback_update_worker; |
492 | ||
08e0e7c8 DH |
493 | extern void afs_init_callback_state(struct afs_server *); |
494 | extern void afs_broken_callback_work(struct work_struct *); | |
495 | extern void afs_break_callbacks(struct afs_server *, size_t, | |
496 | struct afs_callback[]); | |
260a9803 | 497 | extern void afs_discard_callback_on_delete(struct afs_vnode *); |
08e0e7c8 DH |
498 | extern void afs_give_up_callback(struct afs_vnode *); |
499 | extern void afs_dispatch_give_up_callbacks(struct work_struct *); | |
500 | extern void afs_flush_callback_breaks(struct afs_server *); | |
08e0e7c8 | 501 | |
1da177e4 LT |
502 | /* |
503 | * cell.c | |
504 | */ | |
08e0e7c8 | 505 | #define afs_get_cell(C) do { atomic_inc(&(C)->usage); } while(0) |
f044c884 DH |
506 | extern int afs_cell_init(struct afs_net *, char *); |
507 | extern struct afs_cell *afs_cell_create(struct afs_net *, const char *, unsigned, char *, bool); | |
508 | extern struct afs_cell *afs_cell_lookup(struct afs_net *, const char *, unsigned, bool); | |
08e0e7c8 DH |
509 | extern struct afs_cell *afs_grab_cell(struct afs_cell *); |
510 | extern void afs_put_cell(struct afs_cell *); | |
f044c884 | 511 | extern void __net_exit afs_cell_purge(struct afs_net *); |
08e0e7c8 DH |
512 | |
513 | /* | |
514 | * cmservice.c | |
515 | */ | |
516 | extern bool afs_cm_incoming_call(struct afs_call *); | |
517 | ||
1da177e4 LT |
518 | /* |
519 | * dir.c | |
520 | */ | |
754661f1 | 521 | extern const struct inode_operations afs_dir_inode_operations; |
d61dcce2 | 522 | extern const struct dentry_operations afs_fs_dentry_operations; |
4b6f5d20 | 523 | extern const struct file_operations afs_dir_file_operations; |
1da177e4 LT |
524 | |
525 | /* | |
526 | * file.c | |
527 | */ | |
f5e54d6e | 528 | extern const struct address_space_operations afs_fs_aops; |
754661f1 | 529 | extern const struct inode_operations afs_file_inode_operations; |
00d3b7a4 DH |
530 | extern const struct file_operations afs_file_operations; |
531 | ||
532 | extern int afs_open(struct inode *, struct file *); | |
533 | extern int afs_release(struct inode *, struct file *); | |
f6d335c0 | 534 | extern int afs_page_filler(void *, struct page *); |
196ee9cd | 535 | extern void afs_put_read(struct afs_read *); |
1da177e4 | 536 | |
e8d6c554 DH |
537 | /* |
538 | * flock.c | |
539 | */ | |
f044c884 DH |
540 | extern struct workqueue_struct *afs_lock_manager; |
541 | ||
e8d6c554 DH |
542 | extern void afs_lock_work(struct work_struct *); |
543 | extern void afs_lock_may_be_available(struct afs_vnode *); | |
544 | extern int afs_lock(struct file *, int, struct file_lock *); | |
545 | extern int afs_flock(struct file *, int, struct file_lock *); | |
546 | ||
08e0e7c8 DH |
547 | /* |
548 | * fsclient.c | |
549 | */ | |
00d3b7a4 DH |
550 | extern int afs_fs_fetch_file_status(struct afs_server *, struct key *, |
551 | struct afs_vnode *, struct afs_volsync *, | |
56ff9c83 | 552 | bool); |
f044c884 | 553 | extern int afs_fs_give_up_callbacks(struct afs_net *, struct afs_server *, bool); |
00d3b7a4 | 554 | extern int afs_fs_fetch_data(struct afs_server *, struct key *, |
56ff9c83 | 555 | struct afs_vnode *, struct afs_read *, bool); |
260a9803 DH |
556 | extern int afs_fs_create(struct afs_server *, struct key *, |
557 | struct afs_vnode *, const char *, umode_t, | |
558 | struct afs_fid *, struct afs_file_status *, | |
56ff9c83 | 559 | struct afs_callback *, bool); |
260a9803 | 560 | extern int afs_fs_remove(struct afs_server *, struct key *, |
56ff9c83 | 561 | struct afs_vnode *, const char *, bool, bool); |
260a9803 | 562 | extern int afs_fs_link(struct afs_server *, struct key *, struct afs_vnode *, |
56ff9c83 | 563 | struct afs_vnode *, const char *, bool); |
260a9803 DH |
564 | extern int afs_fs_symlink(struct afs_server *, struct key *, |
565 | struct afs_vnode *, const char *, const char *, | |
56ff9c83 | 566 | struct afs_fid *, struct afs_file_status *, bool); |
260a9803 DH |
567 | extern int afs_fs_rename(struct afs_server *, struct key *, |
568 | struct afs_vnode *, const char *, | |
56ff9c83 | 569 | struct afs_vnode *, const char *, bool); |
31143d5d | 570 | extern int afs_fs_store_data(struct afs_server *, struct afs_writeback *, |
56ff9c83 | 571 | pgoff_t, pgoff_t, unsigned, unsigned, bool); |
31143d5d | 572 | extern int afs_fs_setattr(struct afs_server *, struct key *, |
56ff9c83 | 573 | struct afs_vnode *, struct iattr *, bool); |
45222b9e DH |
574 | extern int afs_fs_get_volume_status(struct afs_server *, struct key *, |
575 | struct afs_vnode *, | |
56ff9c83 | 576 | struct afs_volume_status *, bool); |
e8d6c554 | 577 | extern int afs_fs_set_lock(struct afs_server *, struct key *, |
56ff9c83 | 578 | struct afs_vnode *, afs_lock_type_t, bool); |
e8d6c554 | 579 | extern int afs_fs_extend_lock(struct afs_server *, struct key *, |
56ff9c83 | 580 | struct afs_vnode *, bool); |
e8d6c554 | 581 | extern int afs_fs_release_lock(struct afs_server *, struct key *, |
56ff9c83 | 582 | struct afs_vnode *, bool); |
08e0e7c8 | 583 | |
1da177e4 LT |
584 | /* |
585 | * inode.c | |
586 | */ | |
bec5eb61 | 587 | extern struct inode *afs_iget_autocell(struct inode *, const char *, int, |
588 | struct key *); | |
00d3b7a4 | 589 | extern struct inode *afs_iget(struct super_block *, struct key *, |
260a9803 DH |
590 | struct afs_fid *, struct afs_file_status *, |
591 | struct afs_callback *); | |
416351f2 | 592 | extern void afs_zap_data(struct afs_vnode *); |
260a9803 | 593 | extern int afs_validate(struct afs_vnode *, struct key *); |
a528d35e | 594 | extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int); |
31143d5d | 595 | extern int afs_setattr(struct dentry *, struct iattr *); |
b57922d9 | 596 | extern void afs_evict_inode(struct inode *); |
bec5eb61 | 597 | extern int afs_drop_inode(struct inode *); |
1da177e4 LT |
598 | |
599 | /* | |
600 | * main.c | |
601 | */ | |
0ad53eee | 602 | extern struct workqueue_struct *afs_wq; |
f044c884 DH |
603 | |
604 | static inline struct afs_net *afs_d2net(struct dentry *dentry) | |
605 | { | |
606 | return &__afs_net; | |
607 | } | |
608 | ||
609 | static inline struct afs_net *afs_i2net(struct inode *inode) | |
610 | { | |
611 | return &__afs_net; | |
612 | } | |
613 | ||
614 | static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) | |
615 | { | |
616 | return &__afs_net; | |
617 | } | |
618 | ||
619 | static inline struct afs_net *afs_sock2net(struct sock *sk) | |
620 | { | |
621 | return &__afs_net; | |
622 | } | |
623 | ||
624 | static inline struct afs_net *afs_get_net(struct afs_net *net) | |
625 | { | |
626 | return net; | |
627 | } | |
628 | ||
629 | static inline void afs_put_net(struct afs_net *net) | |
630 | { | |
631 | } | |
1da177e4 | 632 | |
08e0e7c8 DH |
633 | /* |
634 | * misc.c | |
635 | */ | |
636 | extern int afs_abort_to_error(u32); | |
637 | ||
1da177e4 LT |
638 | /* |
639 | * mntpt.c | |
640 | */ | |
754661f1 | 641 | extern const struct inode_operations afs_mntpt_inode_operations; |
bec5eb61 | 642 | extern const struct inode_operations afs_autocell_inode_operations; |
4b6f5d20 | 643 | extern const struct file_operations afs_mntpt_file_operations; |
1da177e4 | 644 | |
d18610b0 | 645 | extern struct vfsmount *afs_d_automount(struct path *); |
08e0e7c8 | 646 | extern void afs_mntpt_kill_timer(void); |
1da177e4 | 647 | |
b4db2b35 AB |
648 | /* |
649 | * netdevices.c | |
650 | */ | |
651 | extern int afs_get_ipv4_interfaces(struct afs_interface *, size_t, bool); | |
652 | ||
1da177e4 LT |
653 | /* |
654 | * proc.c | |
655 | */ | |
f044c884 DH |
656 | extern int __net_init afs_proc_init(struct afs_net *); |
657 | extern void __net_exit afs_proc_cleanup(struct afs_net *); | |
658 | extern int afs_proc_cell_setup(struct afs_net *, struct afs_cell *); | |
659 | extern void afs_proc_cell_remove(struct afs_net *, struct afs_cell *); | |
1da177e4 | 660 | |
08e0e7c8 DH |
661 | /* |
662 | * rxrpc.c | |
663 | */ | |
f044c884 | 664 | extern struct workqueue_struct *afs_async_calls; |
8324f0bc | 665 | |
f044c884 DH |
666 | extern int __net_init afs_open_socket(struct afs_net *); |
667 | extern void __net_exit afs_close_socket(struct afs_net *); | |
668 | extern void afs_charge_preallocation(struct work_struct *); | |
341f741f DH |
669 | extern void afs_put_call(struct afs_call *); |
670 | extern int afs_queue_call_work(struct afs_call *); | |
56ff9c83 | 671 | extern int afs_make_call(struct in_addr *, struct afs_call *, gfp_t, bool); |
f044c884 DH |
672 | extern struct afs_call *afs_alloc_flat_call(struct afs_net *, |
673 | const struct afs_call_type *, | |
08e0e7c8 DH |
674 | size_t, size_t); |
675 | extern void afs_flat_call_destructor(struct afs_call *); | |
08e0e7c8 | 676 | extern void afs_send_empty_reply(struct afs_call *); |
b908fe6b | 677 | extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); |
d001648e | 678 | extern int afs_extract_data(struct afs_call *, void *, size_t, bool); |
08e0e7c8 | 679 | |
d001648e | 680 | static inline int afs_transfer_reply(struct afs_call *call) |
372ee163 | 681 | { |
d001648e | 682 | return afs_extract_data(call, call->buffer, call->reply_max, false); |
372ee163 DH |
683 | } |
684 | ||
00d3b7a4 DH |
685 | /* |
686 | * security.c | |
687 | */ | |
688 | extern void afs_clear_permits(struct afs_vnode *); | |
689 | extern void afs_cache_permit(struct afs_vnode *, struct key *, long); | |
416351f2 | 690 | extern void afs_zap_permits(struct rcu_head *); |
00d3b7a4 | 691 | extern struct key *afs_request_key(struct afs_cell *); |
10556cb2 | 692 | extern int afs_permission(struct inode *, int); |
00d3b7a4 | 693 | |
08e0e7c8 DH |
694 | /* |
695 | * server.c | |
696 | */ | |
697 | extern spinlock_t afs_server_peer_lock; | |
698 | ||
260a9803 DH |
699 | #define afs_get_server(S) \ |
700 | do { \ | |
701 | _debug("GET SERVER %d", atomic_read(&(S)->usage)); \ | |
702 | atomic_inc(&(S)->usage); \ | |
703 | } while(0) | |
08e0e7c8 | 704 | |
59fa1c4a | 705 | extern void afs_server_timer(struct timer_list *); |
08e0e7c8 DH |
706 | extern struct afs_server *afs_lookup_server(struct afs_cell *, |
707 | const struct in_addr *); | |
f044c884 DH |
708 | extern struct afs_server *afs_find_server(struct afs_net *, |
709 | const struct sockaddr_rxrpc *); | |
08e0e7c8 | 710 | extern void afs_put_server(struct afs_server *); |
f044c884 DH |
711 | extern void afs_reap_server(struct work_struct *); |
712 | extern void __net_exit afs_purge_servers(struct afs_net *); | |
08e0e7c8 | 713 | |
00d3b7a4 DH |
714 | /* |
715 | * super.c | |
716 | */ | |
f044c884 DH |
717 | extern int __init afs_fs_init(void); |
718 | extern void __exit afs_fs_exit(void); | |
00d3b7a4 | 719 | |
08e0e7c8 DH |
720 | /* |
721 | * vlclient.c | |
722 | */ | |
f044c884 DH |
723 | extern int afs_vl_get_entry_by_name(struct afs_net *, |
724 | struct in_addr *, struct key *, | |
00d3b7a4 | 725 | const char *, struct afs_cache_vlocation *, |
56ff9c83 | 726 | bool); |
f044c884 DH |
727 | extern int afs_vl_get_entry_by_id(struct afs_net *, |
728 | struct in_addr *, struct key *, | |
00d3b7a4 | 729 | afs_volid_t, afs_voltype_t, |
56ff9c83 | 730 | struct afs_cache_vlocation *, bool); |
08e0e7c8 DH |
731 | |
732 | /* | |
733 | * vlocation.c | |
734 | */ | |
f044c884 DH |
735 | extern struct workqueue_struct *afs_vlocation_update_worker; |
736 | ||
08e0e7c8 DH |
737 | #define afs_get_vlocation(V) do { atomic_inc(&(V)->usage); } while(0) |
738 | ||
f044c884 DH |
739 | extern struct afs_vlocation *afs_vlocation_lookup(struct afs_net *, |
740 | struct afs_cell *, | |
00d3b7a4 | 741 | struct key *, |
08e0e7c8 | 742 | const char *, size_t); |
f044c884 DH |
743 | extern void afs_put_vlocation(struct afs_net *, struct afs_vlocation *); |
744 | extern void afs_vlocation_updater(struct work_struct *); | |
745 | extern void afs_vlocation_reaper(struct work_struct *); | |
746 | extern void __net_exit afs_vlocation_purge(struct afs_net *); | |
08e0e7c8 DH |
747 | |
748 | /* | |
749 | * vnode.c | |
750 | */ | |
08e0e7c8 DH |
751 | static inline struct afs_vnode *AFS_FS_I(struct inode *inode) |
752 | { | |
753 | return container_of(inode, struct afs_vnode, vfs_inode); | |
754 | } | |
755 | ||
756 | static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) | |
757 | { | |
758 | return &vnode->vfs_inode; | |
759 | } | |
760 | ||
260a9803 DH |
761 | extern void afs_vnode_finalise_status_update(struct afs_vnode *, |
762 | struct afs_server *); | |
00d3b7a4 DH |
763 | extern int afs_vnode_fetch_status(struct afs_vnode *, struct afs_vnode *, |
764 | struct key *); | |
765 | extern int afs_vnode_fetch_data(struct afs_vnode *, struct key *, | |
196ee9cd | 766 | struct afs_read *); |
260a9803 DH |
767 | extern int afs_vnode_create(struct afs_vnode *, struct key *, const char *, |
768 | umode_t, struct afs_fid *, struct afs_file_status *, | |
769 | struct afs_callback *, struct afs_server **); | |
770 | extern int afs_vnode_remove(struct afs_vnode *, struct key *, const char *, | |
771 | bool); | |
772 | extern int afs_vnode_link(struct afs_vnode *, struct afs_vnode *, struct key *, | |
773 | const char *); | |
774 | extern int afs_vnode_symlink(struct afs_vnode *, struct key *, const char *, | |
775 | const char *, struct afs_fid *, | |
776 | struct afs_file_status *, struct afs_server **); | |
777 | extern int afs_vnode_rename(struct afs_vnode *, struct afs_vnode *, | |
778 | struct key *, const char *, const char *); | |
31143d5d DH |
779 | extern int afs_vnode_store_data(struct afs_writeback *, pgoff_t, pgoff_t, |
780 | unsigned, unsigned); | |
781 | extern int afs_vnode_setattr(struct afs_vnode *, struct key *, struct iattr *); | |
45222b9e DH |
782 | extern int afs_vnode_get_volume_status(struct afs_vnode *, struct key *, |
783 | struct afs_volume_status *); | |
e8d6c554 DH |
784 | extern int afs_vnode_set_lock(struct afs_vnode *, struct key *, |
785 | afs_lock_type_t); | |
786 | extern int afs_vnode_extend_lock(struct afs_vnode *, struct key *); | |
787 | extern int afs_vnode_release_lock(struct afs_vnode *, struct key *); | |
08e0e7c8 DH |
788 | |
789 | /* | |
790 | * volume.c | |
791 | */ | |
08e0e7c8 DH |
792 | #define afs_get_volume(V) do { atomic_inc(&(V)->usage); } while(0) |
793 | ||
f044c884 | 794 | extern void afs_put_volume(struct afs_net *, struct afs_volume *); |
00d3b7a4 | 795 | extern struct afs_volume *afs_volume_lookup(struct afs_mount_params *); |
08e0e7c8 DH |
796 | extern struct afs_server *afs_volume_pick_fileserver(struct afs_vnode *); |
797 | extern int afs_volume_release_fileserver(struct afs_vnode *, | |
798 | struct afs_server *, int); | |
799 | ||
31143d5d DH |
800 | /* |
801 | * write.c | |
802 | */ | |
803 | extern int afs_set_page_dirty(struct page *); | |
804 | extern void afs_put_writeback(struct afs_writeback *); | |
15b4650e NP |
805 | extern int afs_write_begin(struct file *file, struct address_space *mapping, |
806 | loff_t pos, unsigned len, unsigned flags, | |
807 | struct page **pagep, void **fsdata); | |
808 | extern int afs_write_end(struct file *file, struct address_space *mapping, | |
809 | loff_t pos, unsigned len, unsigned copied, | |
810 | struct page *page, void *fsdata); | |
31143d5d DH |
811 | extern int afs_writepage(struct page *, struct writeback_control *); |
812 | extern int afs_writepages(struct address_space *, struct writeback_control *); | |
31143d5d | 813 | extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *); |
50b5551d | 814 | extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); |
31143d5d | 815 | extern int afs_writeback_all(struct afs_vnode *); |
58fed94d | 816 | extern int afs_flush(struct file *, fl_owner_t); |
02c24a82 | 817 | extern int afs_fsync(struct file *, loff_t, loff_t, int); |
31143d5d | 818 | |
d3e3b7ea DH |
819 | /* |
820 | * xattr.c | |
821 | */ | |
822 | extern const struct xattr_handler *afs_xattr_handlers[]; | |
823 | extern ssize_t afs_listxattr(struct dentry *, char *, size_t); | |
31143d5d | 824 | |
08e0e7c8 DH |
825 | /*****************************************************************************/ |
826 | /* | |
827 | * debug tracing | |
828 | */ | |
8e8d7f13 DH |
829 | #include <trace/events/afs.h> |
830 | ||
08e0e7c8 DH |
831 | extern unsigned afs_debug; |
832 | ||
833 | #define dbgprintk(FMT,...) \ | |
ad16df84 | 834 | printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) |
08e0e7c8 | 835 | |
530b6412 HH |
836 | #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
837 | #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
08e0e7c8 DH |
838 | #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) |
839 | ||
840 | ||
841 | #if defined(__KDEBUG) | |
842 | #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) | |
843 | #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) | |
844 | #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) | |
845 | ||
846 | #elif defined(CONFIG_AFS_DEBUG) | |
847 | #define AFS_DEBUG_KENTER 0x01 | |
848 | #define AFS_DEBUG_KLEAVE 0x02 | |
849 | #define AFS_DEBUG_KDEBUG 0x04 | |
850 | ||
851 | #define _enter(FMT,...) \ | |
852 | do { \ | |
853 | if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ | |
854 | kenter(FMT,##__VA_ARGS__); \ | |
855 | } while (0) | |
856 | ||
857 | #define _leave(FMT,...) \ | |
858 | do { \ | |
859 | if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ | |
860 | kleave(FMT,##__VA_ARGS__); \ | |
861 | } while (0) | |
862 | ||
863 | #define _debug(FMT,...) \ | |
864 | do { \ | |
865 | if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ | |
866 | kdebug(FMT,##__VA_ARGS__); \ | |
867 | } while (0) | |
868 | ||
869 | #else | |
12fdff3f DH |
870 | #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
871 | #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
872 | #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) | |
08e0e7c8 DH |
873 | #endif |
874 | ||
875 | /* | |
876 | * debug assertion checking | |
877 | */ | |
878 | #if 1 // defined(__KDEBUGALL) | |
879 | ||
880 | #define ASSERT(X) \ | |
881 | do { \ | |
882 | if (unlikely(!(X))) { \ | |
883 | printk(KERN_ERR "\n"); \ | |
884 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
885 | BUG(); \ | |
886 | } \ | |
887 | } while(0) | |
888 | ||
889 | #define ASSERTCMP(X, OP, Y) \ | |
890 | do { \ | |
891 | if (unlikely(!((X) OP (Y)))) { \ | |
892 | printk(KERN_ERR "\n"); \ | |
893 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
894 | printk(KERN_ERR "%lu " #OP " %lu is false\n", \ | |
895 | (unsigned long)(X), (unsigned long)(Y)); \ | |
896 | printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ | |
897 | (unsigned long)(X), (unsigned long)(Y)); \ | |
898 | BUG(); \ | |
899 | } \ | |
900 | } while(0) | |
901 | ||
416351f2 DH |
902 | #define ASSERTRANGE(L, OP1, N, OP2, H) \ |
903 | do { \ | |
904 | if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ | |
905 | printk(KERN_ERR "\n"); \ | |
906 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
907 | printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ | |
908 | (unsigned long)(L), (unsigned long)(N), \ | |
909 | (unsigned long)(H)); \ | |
910 | printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ | |
911 | (unsigned long)(L), (unsigned long)(N), \ | |
912 | (unsigned long)(H)); \ | |
913 | BUG(); \ | |
914 | } \ | |
915 | } while(0) | |
916 | ||
08e0e7c8 DH |
917 | #define ASSERTIF(C, X) \ |
918 | do { \ | |
919 | if (unlikely((C) && !(X))) { \ | |
920 | printk(KERN_ERR "\n"); \ | |
921 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
922 | BUG(); \ | |
923 | } \ | |
924 | } while(0) | |
925 | ||
926 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
927 | do { \ | |
928 | if (unlikely((C) && !((X) OP (Y)))) { \ | |
929 | printk(KERN_ERR "\n"); \ | |
930 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
931 | printk(KERN_ERR "%lu " #OP " %lu is false\n", \ | |
932 | (unsigned long)(X), (unsigned long)(Y)); \ | |
933 | printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ | |
934 | (unsigned long)(X), (unsigned long)(Y)); \ | |
935 | BUG(); \ | |
936 | } \ | |
937 | } while(0) | |
938 | ||
939 | #else | |
940 | ||
941 | #define ASSERT(X) \ | |
942 | do { \ | |
943 | } while(0) | |
944 | ||
945 | #define ASSERTCMP(X, OP, Y) \ | |
946 | do { \ | |
947 | } while(0) | |
948 | ||
416351f2 DH |
949 | #define ASSERTRANGE(L, OP1, N, OP2, H) \ |
950 | do { \ | |
951 | } while(0) | |
952 | ||
08e0e7c8 DH |
953 | #define ASSERTIF(C, X) \ |
954 | do { \ | |
955 | } while(0) | |
956 | ||
957 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
958 | do { \ | |
959 | } while(0) | |
960 | ||
961 | #endif /* __KDEBUGALL */ |