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David Howellsec268152007-04-26 15:49:28 -07001/* internal AFS stuff
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 *
David Howells08e0e7c2007-04-26 15:55:03 -07003 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/compiler.h>
13#include <linux/kernel.h>
Tina Ruchandani7da1b852017-03-16 16:27:46 +000014#include <linux/ktime.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/fs.h>
16#include <linux/pagemap.h>
David Howells08e0e7c2007-04-26 15:55:03 -070017#include <linux/rxrpc.h>
David Howells00d3b7a2007-04-26 15:57:07 -070018#include <linux/key.h>
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040019#include <linux/workqueue.h>
Andrew Morton00c541e2007-05-31 00:40:52 -070020#include <linux/sched.h>
Christoph Hellwig80e50be2009-10-01 15:44:27 -070021#include <linux/fscache.h>
Jens Axboee1da0222010-04-22 11:58:18 +020022#include <linux/backing-dev.h>
David Howells8324f0b2016-08-30 09:49:29 +010023#include <net/af_rxrpc.h>
Andrew Morton00c541e2007-05-31 00:40:52 -070024
David Howells08e0e7c2007-04-26 15:55:03 -070025#include "afs.h"
26#include "afs_vl.h"
27
28#define AFS_CELL_MAX_ADDRS 15
29
David Howells31143d52007-05-09 02:33:46 -070030struct pagevec;
David Howells08e0e7c2007-04-26 15:55:03 -070031struct afs_call;
32
33typedef enum {
34 AFS_VL_NEW, /* new, uninitialised record */
35 AFS_VL_CREATING, /* creating record */
36 AFS_VL_VALID, /* record is pending */
37 AFS_VL_NO_VOLUME, /* no such volume available */
38 AFS_VL_UPDATING, /* update in progress */
39 AFS_VL_VOLUME_DELETED, /* volume was deleted */
40 AFS_VL_UNCERTAIN, /* uncertain state (update failed) */
41} __attribute__((packed)) afs_vlocation_state_t;
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
David Howells00d3b7a2007-04-26 15:57:07 -070043struct afs_mount_params {
44 bool rwpath; /* T if the parent should be considered R/W */
45 bool force; /* T to force cell type */
wangleibec5eb62010-08-11 09:38:04 +010046 bool autocell; /* T if set auto mount operation */
David Howells00d3b7a2007-04-26 15:57:07 -070047 afs_voltype_t type; /* type of volume requested */
48 int volnamesz; /* size of volume name */
49 const char *volname; /* name of volume to mount */
50 struct afs_cell *cell; /* cell in which to find volume */
51 struct afs_volume *volume; /* volume record */
52 struct key *key; /* key to use for secure mounting */
53};
54
Linus Torvalds1da177e2005-04-16 15:20:36 -070055/*
David Howells08e0e7c2007-04-26 15:55:03 -070056 * definition of how to wait for the completion of an operation
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 */
David Howells08e0e7c2007-04-26 15:55:03 -070058struct afs_wait_mode {
59 /* RxRPC received message notification */
David Howellsd0016482016-08-30 20:42:14 +010060 rxrpc_notify_rx_t notify_rx;
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
David Howells08e0e7c2007-04-26 15:55:03 -070062 /* synchronous call waiter and call dispatched notification */
63 int (*wait)(struct afs_call *call);
64
65 /* asynchronous call completion */
66 void (*async_complete)(void *reply, int error);
67};
68
69extern const struct afs_wait_mode afs_sync_call;
70extern const struct afs_wait_mode afs_async_call;
71
72/*
73 * a record of an in-progress RxRPC call
74 */
75struct afs_call {
76 const struct afs_call_type *type; /* type of call */
77 const struct afs_wait_mode *wait_mode; /* completion wait mode */
78 wait_queue_head_t waitq; /* processes awaiting completion */
79 struct work_struct async_work; /* asynchronous work processor */
80 struct work_struct work; /* actual work processor */
David Howells08e0e7c2007-04-26 15:55:03 -070081 struct rxrpc_call *rxcall; /* RxRPC call handle */
82 struct key *key; /* security for this call */
83 struct afs_server *server; /* server affected by incoming CM call */
84 void *request; /* request data (first part) */
David Howells31143d52007-05-09 02:33:46 -070085 struct address_space *mapping; /* page set */
86 struct afs_writeback *wb; /* writeback being performed */
David Howells08e0e7c2007-04-26 15:55:03 -070087 void *buffer; /* reply receive buffer */
88 void *reply; /* reply buffer (first part) */
89 void *reply2; /* reply buffer (second part) */
90 void *reply3; /* reply buffer (third part) */
David Howells260a9802007-04-26 15:59:35 -070091 void *reply4; /* reply buffer (fourth part) */
David Howells31143d52007-05-09 02:33:46 -070092 pgoff_t first; /* first page in mapping to deal with */
93 pgoff_t last; /* last page in mapping to deal with */
David Howellsd0016482016-08-30 20:42:14 +010094 size_t offset; /* offset into received data store */
David Howells08e0e7c2007-04-26 15:55:03 -070095 enum { /* call state */
96 AFS_CALL_REQUESTING, /* request is being sent for outgoing call */
97 AFS_CALL_AWAIT_REPLY, /* awaiting reply to outgoing call */
98 AFS_CALL_AWAIT_OP_ID, /* awaiting op ID on incoming call */
99 AFS_CALL_AWAIT_REQUEST, /* awaiting request data on incoming call */
100 AFS_CALL_REPLYING, /* replying to incoming call */
101 AFS_CALL_AWAIT_ACK, /* awaiting final ACK of incoming call */
David Howellsd0016482016-08-30 20:42:14 +0100102 AFS_CALL_COMPLETE, /* Completed or failed */
David Howells08e0e7c2007-04-26 15:55:03 -0700103 } state;
104 int error; /* error code */
David Howellsd0016482016-08-30 20:42:14 +0100105 u32 abort_code; /* Remote abort ID or 0 */
David Howells08e0e7c2007-04-26 15:55:03 -0700106 unsigned request_size; /* size of request data */
107 unsigned reply_max; /* maximum size of reply */
David Howells31143d52007-05-09 02:33:46 -0700108 unsigned first_offset; /* offset into mapping[first] */
Marc Dionneeaaad762017-03-16 16:27:44 +0000109 union {
110 unsigned last_to; /* amount of mapping[last] */
111 unsigned count2; /* count used in unmarshalling */
112 };
David Howells08e0e7c2007-04-26 15:55:03 -0700113 unsigned char unmarshall; /* unmarshalling phase */
114 bool incoming; /* T if incoming call */
David Howells31143d52007-05-09 02:33:46 -0700115 bool send_pages; /* T if data from mapping should be sent */
David Howellsd0016482016-08-30 20:42:14 +0100116 bool need_attention; /* T if RxRPC poked us */
David Howells08e0e7c2007-04-26 15:55:03 -0700117 u16 service_id; /* RxRPC service ID to call */
118 __be16 port; /* target UDP port */
David Howells50a2c952016-10-13 08:27:10 +0100119 u32 operation_ID; /* operation ID for an incoming call */
David Howells08e0e7c2007-04-26 15:55:03 -0700120 u32 count; /* count for use in unmarshalling */
121 __be32 tmp; /* place to extract temporary data */
David Howells31143d52007-05-09 02:33:46 -0700122 afs_dataversion_t store_version; /* updated version expected from store */
David Howells08e0e7c2007-04-26 15:55:03 -0700123};
124
125struct afs_call_type {
David Howells00d3b7a2007-04-26 15:57:07 -0700126 const char *name;
127
David Howells08e0e7c2007-04-26 15:55:03 -0700128 /* deliver request or reply data to an call
129 * - returning an error will cause the call to be aborted
130 */
David Howellsd0016482016-08-30 20:42:14 +0100131 int (*deliver)(struct afs_call *call);
David Howells08e0e7c2007-04-26 15:55:03 -0700132
133 /* map an abort code to an error number */
134 int (*abort_to_error)(u32 abort_code);
135
136 /* clean up a call */
137 void (*destructor)(struct afs_call *call);
138};
139
140/*
David Howells31143d52007-05-09 02:33:46 -0700141 * record of an outstanding writeback on a vnode
142 */
143struct afs_writeback {
144 struct list_head link; /* link in vnode->writebacks */
145 struct work_struct writer; /* work item to perform the writeback */
146 struct afs_vnode *vnode; /* vnode to which this write applies */
147 struct key *key; /* owner of this write */
148 wait_queue_head_t waitq; /* completion and ready wait queue */
149 pgoff_t first; /* first page in batch */
150 pgoff_t point; /* last page in current store op */
151 pgoff_t last; /* last page in batch (inclusive) */
152 unsigned offset_first; /* offset into first page of start of write */
153 unsigned to_last; /* offset into last page of end of write */
154 int num_conflicts; /* count of conflicting writes in list */
155 int usage;
156 bool conflicts; /* T if has dependent conflicts */
157 enum {
158 AFS_WBACK_SYNCING, /* synchronisation being performed */
159 AFS_WBACK_PENDING, /* write pending */
160 AFS_WBACK_CONFLICTING, /* conflicting writes posted */
161 AFS_WBACK_WRITING, /* writing back */
162 AFS_WBACK_COMPLETE /* the writeback record has been unlinked */
163 } state __attribute__((packed));
164};
165
166/*
David Howells08e0e7c2007-04-26 15:55:03 -0700167 * AFS superblock private data
168 * - there's one superblock per volume
169 */
170struct afs_super_info {
171 struct afs_volume *volume; /* volume record */
172 char rwparent; /* T if parent is R/W AFS volume */
173};
174
175static inline struct afs_super_info *AFS_FS_S(struct super_block *sb)
176{
177 return sb->s_fs_info;
178}
179
180extern struct file_system_type afs_fs_type;
181
182/*
183 * entry in the cached cell catalogue
184 */
185struct afs_cache_cell {
David Howells00d3b7a2007-04-26 15:57:07 -0700186 char name[AFS_MAXCELLNAME]; /* cell name (padded with NULs) */
187 struct in_addr vl_servers[15]; /* cached cell VL servers */
David Howells08e0e7c2007-04-26 15:55:03 -0700188};
189
190/*
191 * AFS cell record
192 */
193struct afs_cell {
194 atomic_t usage;
195 struct list_head link; /* main cell list link */
David Howells00d3b7a2007-04-26 15:57:07 -0700196 struct key *anonymous_key; /* anonymous user key for this cell */
David Howells08e0e7c2007-04-26 15:55:03 -0700197 struct list_head proc_link; /* /proc cell list link */
David Howells9b3f26c2009-04-03 16:42:41 +0100198#ifdef CONFIG_AFS_FSCACHE
199 struct fscache_cookie *cache; /* caching cookie */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200#endif
201
David Howells08e0e7c2007-04-26 15:55:03 -0700202 /* server record management */
203 rwlock_t servers_lock; /* active server list lock */
204 struct list_head servers; /* active server list */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
David Howells08e0e7c2007-04-26 15:55:03 -0700206 /* volume location record management */
207 struct rw_semaphore vl_sem; /* volume management serialisation semaphore */
208 struct list_head vl_list; /* cell's active VL record list */
209 spinlock_t vl_lock; /* vl_list lock */
210 unsigned short vl_naddrs; /* number of VL servers in addr list */
211 unsigned short vl_curr_svix; /* current server index */
212 struct in_addr vl_addrs[AFS_CELL_MAX_ADDRS]; /* cell VL server addresses */
213
214 char name[0]; /* cell name - must go last */
215};
216
217/*
218 * entry in the cached volume location catalogue
219 */
220struct afs_cache_vlocation {
David Howells00d3b7a2007-04-26 15:57:07 -0700221 /* volume name (lowercase, padded with NULs) */
222 uint8_t name[AFS_MAXVOLNAME + 1];
223
David Howells08e0e7c2007-04-26 15:55:03 -0700224 uint8_t nservers; /* number of entries used in servers[] */
225 uint8_t vidmask; /* voltype mask for vid[] */
226 uint8_t srvtmask[8]; /* voltype masks for servers[] */
227#define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */
228#define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */
229#define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */
230
231 afs_volid_t vid[3]; /* volume IDs for R/W, R/O and Bak volumes */
232 struct in_addr servers[8]; /* fileserver addresses */
233 time_t rtime; /* last retrieval time */
234};
235
236/*
237 * volume -> vnode hash table entry
238 */
239struct afs_cache_vhash {
240 afs_voltype_t vtype; /* which volume variation */
241 uint8_t hash_bucket; /* which hash bucket this represents */
242} __attribute__((packed));
243
244/*
245 * AFS volume location record
246 */
247struct afs_vlocation {
248 atomic_t usage;
Tina Ruchandani7da1b852017-03-16 16:27:46 +0000249 time64_t time_of_death; /* time at which put reduced usage to 0 */
David Howells08e0e7c2007-04-26 15:55:03 -0700250 struct list_head link; /* link in cell volume location list */
251 struct list_head grave; /* link in master graveyard list */
252 struct list_head update; /* link in master update list */
253 struct afs_cell *cell; /* cell to which volume belongs */
David Howells9b3f26c2009-04-03 16:42:41 +0100254#ifdef CONFIG_AFS_FSCACHE
255 struct fscache_cookie *cache; /* caching cookie */
David Howells08e0e7c2007-04-26 15:55:03 -0700256#endif
257 struct afs_cache_vlocation vldb; /* volume information DB record */
258 struct afs_volume *vols[3]; /* volume access record pointer (index by type) */
259 wait_queue_head_t waitq; /* status change waitqueue */
Tina Ruchandani7da1b852017-03-16 16:27:46 +0000260 time64_t update_at; /* time at which record should be updated */
David S. Miller39bf0942007-04-26 20:39:14 -0700261 spinlock_t lock; /* access lock */
David Howells08e0e7c2007-04-26 15:55:03 -0700262 afs_vlocation_state_t state; /* volume location state */
263 unsigned short upd_rej_cnt; /* ENOMEDIUM count during update */
264 unsigned short upd_busy_cnt; /* EBUSY count during update */
265 bool valid; /* T if valid */
266};
267
268/*
269 * AFS fileserver record
270 */
271struct afs_server {
272 atomic_t usage;
Tina Ruchandani7da1b852017-03-16 16:27:46 +0000273 time64_t time_of_death; /* time at which put reduced usage to 0 */
David Howells08e0e7c2007-04-26 15:55:03 -0700274 struct in_addr addr; /* server address */
275 struct afs_cell *cell; /* cell in which server resides */
276 struct list_head link; /* link in cell's server list */
277 struct list_head grave; /* link in master graveyard list */
278 struct rb_node master_rb; /* link in master by-addr tree */
279 struct rw_semaphore sem; /* access lock */
280
281 /* file service access */
282 struct rb_root fs_vnodes; /* vnodes backed by this server (ordered by FID) */
283 unsigned long fs_act_jif; /* time at which last activity occurred */
284 unsigned long fs_dead_jif; /* time at which no longer to be considered dead */
285 spinlock_t fs_lock; /* access lock */
286 int fs_state; /* 0 or reason FS currently marked dead (-errno) */
287
288 /* callback promise management */
289 struct rb_root cb_promises; /* vnode expiration list (ordered earliest first) */
290 struct delayed_work cb_updater; /* callback updater */
291 struct delayed_work cb_break_work; /* collected break dispatcher */
292 wait_queue_head_t cb_break_waitq; /* space available in cb_break waitqueue */
293 spinlock_t cb_lock; /* access lock */
294 struct afs_callback cb_break[64]; /* ring of callbacks awaiting breaking */
295 atomic_t cb_break_n; /* number of pending breaks */
296 u8 cb_break_head; /* head of callback breaking ring */
297 u8 cb_break_tail; /* tail of callback breaking ring */
298};
299
300/*
301 * AFS volume access record
302 */
303struct afs_volume {
304 atomic_t usage;
305 struct afs_cell *cell; /* cell to which belongs (unrefd ptr) */
306 struct afs_vlocation *vlocation; /* volume location */
David Howells9b3f26c2009-04-03 16:42:41 +0100307#ifdef CONFIG_AFS_FSCACHE
308 struct fscache_cookie *cache; /* caching cookie */
David Howells08e0e7c2007-04-26 15:55:03 -0700309#endif
310 afs_volid_t vid; /* volume ID */
311 afs_voltype_t type; /* type of volume */
312 char type_force; /* force volume type (suppress R/O -> R/W) */
313 unsigned short nservers; /* number of server slots filled */
314 unsigned short rjservers; /* number of servers discarded due to -ENOMEDIUM */
315 struct afs_server *servers[8]; /* servers on which volume resides (ordered) */
316 struct rw_semaphore server_sem; /* lock for accessing current server */
Jens Axboee1da0222010-04-22 11:58:18 +0200317 struct backing_dev_info bdi;
David Howells08e0e7c2007-04-26 15:55:03 -0700318};
319
320/*
321 * vnode catalogue entry
322 */
323struct afs_cache_vnode {
324 afs_vnodeid_t vnode_id; /* vnode ID */
325 unsigned vnode_unique; /* vnode ID uniquifier */
326 afs_dataversion_t data_version; /* data version */
327};
328
329/*
330 * AFS inode private data
331 */
332struct afs_vnode {
333 struct inode vfs_inode; /* the VFS's inode record */
334
335 struct afs_volume *volume; /* volume on which vnode resides */
336 struct afs_server *server; /* server currently supplying this file */
337 struct afs_fid fid; /* the file identifier for this inode */
338 struct afs_file_status status; /* AFS status info for this file */
David Howells9b3f26c2009-04-03 16:42:41 +0100339#ifdef CONFIG_AFS_FSCACHE
340 struct fscache_cookie *cache; /* caching cookie */
David Howells08e0e7c2007-04-26 15:55:03 -0700341#endif
David Howells00d3b7a2007-04-26 15:57:07 -0700342 struct afs_permits *permits; /* cache of permits so far obtained */
343 struct mutex permits_lock; /* lock for altering permits list */
David Howells260a9802007-04-26 15:59:35 -0700344 struct mutex validate_lock; /* lock for validating this vnode */
David Howells08e0e7c2007-04-26 15:55:03 -0700345 wait_queue_head_t update_waitq; /* status fetch waitqueue */
David Howells260a9802007-04-26 15:59:35 -0700346 int update_cnt; /* number of outstanding ops that will update the
David Howells08e0e7c2007-04-26 15:55:03 -0700347 * status */
David Howells31143d52007-05-09 02:33:46 -0700348 spinlock_t writeback_lock; /* lock for writebacks */
David Howells08e0e7c2007-04-26 15:55:03 -0700349 spinlock_t lock; /* waitqueue/flags lock */
350 unsigned long flags;
351#define AFS_VNODE_CB_BROKEN 0 /* set if vnode's callback was broken */
David Howells260a9802007-04-26 15:59:35 -0700352#define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */
David Howells08e0e7c2007-04-26 15:55:03 -0700353#define AFS_VNODE_MODIFIED 2 /* set if vnode's data modified */
354#define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */
355#define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */
356#define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */
David Howellse8d6c552007-07-15 23:40:12 -0700357#define AFS_VNODE_LOCKING 6 /* set if waiting for lock on vnode */
358#define AFS_VNODE_READLOCKED 7 /* set if vnode is read-locked on the server */
359#define AFS_VNODE_WRITELOCKED 8 /* set if vnode is write-locked on the server */
360#define AFS_VNODE_UNLOCKING 9 /* set if vnode is being unlocked on the server */
wangleibec5eb62010-08-11 09:38:04 +0100361#define AFS_VNODE_AUTOCELL 10 /* set if Vnode is an auto mount point */
362#define AFS_VNODE_PSEUDODIR 11 /* set if Vnode is a pseudo directory */
David Howells08e0e7c2007-04-26 15:55:03 -0700363
David Howells00d3b7a2007-04-26 15:57:07 -0700364 long acl_order; /* ACL check count (callback break count) */
365
David Howells31143d52007-05-09 02:33:46 -0700366 struct list_head writebacks; /* alterations in pagecache that need writing */
David Howellse8d6c552007-07-15 23:40:12 -0700367 struct list_head pending_locks; /* locks waiting to be granted */
368 struct list_head granted_locks; /* locks granted on this file */
369 struct delayed_work lock_work; /* work to be done in locking */
370 struct key *unlock_key; /* key to be used in unlocking */
David Howells31143d52007-05-09 02:33:46 -0700371
David Howells08e0e7c2007-04-26 15:55:03 -0700372 /* outstanding callback notification on this file */
373 struct rb_node server_rb; /* link in server->fs_vnodes */
374 struct rb_node cb_promise; /* link in server->cb_promises */
375 struct work_struct cb_broken_work; /* work to be done on callback break */
Tina Ruchandani9329ae42017-03-16 16:27:46 +0000376 time64_t cb_expires; /* time at which callback expires */
377 time64_t cb_expires_at; /* time used to order cb_promise */
David Howells08e0e7c2007-04-26 15:55:03 -0700378 unsigned cb_version; /* callback version */
379 unsigned cb_expiry; /* callback expiry time */
380 afs_callback_type_t cb_type; /* type of callback */
381 bool cb_promised; /* true if promise still holds */
382};
383
David Howells00d3b7a2007-04-26 15:57:07 -0700384/*
385 * cached security record for one user's attempt to access a vnode
386 */
387struct afs_permit {
388 struct key *key; /* RxRPC ticket holding a security context */
389 afs_access_t access_mask; /* access mask for this key */
390};
391
392/*
393 * cache of security records from attempts to access a vnode
394 */
395struct afs_permits {
396 struct rcu_head rcu; /* disposal procedure */
397 int count; /* number of records */
398 struct afs_permit permits[0]; /* the permits so far examined */
399};
400
David Howellsb908fe62007-04-26 15:58:17 -0700401/*
402 * record of one of a system's set of network interfaces
403 */
404struct afs_interface {
David Howellsb908fe62007-04-26 15:58:17 -0700405 struct in_addr address; /* IPv4 address bound to interface */
406 struct in_addr netmask; /* netmask applied to address */
407 unsigned mtu; /* MTU of interface */
408};
409
410/*
411 * UUID definition [internet draft]
412 * - the timestamp is a 60-bit value, split 32/16/12, and goes in 100ns
413 * increments since midnight 15th October 1582
414 * - add AFS_UUID_TO_UNIX_TIME to convert unix time in 100ns units to UUID
415 * time
416 * - the clock sequence is a 14-bit counter to avoid duplicate times
417 */
418struct afs_uuid {
419 u32 time_low; /* low part of timestamp */
420 u16 time_mid; /* mid part of timestamp */
421 u16 time_hi_and_version; /* high part of timestamp and version */
David Howellsb1bdb692007-04-27 15:28:45 -0700422#define AFS_UUID_TO_UNIX_TIME 0x01b21dd213814000ULL
David Howellsb908fe62007-04-26 15:58:17 -0700423#define AFS_UUID_TIMEHI_MASK 0x0fff
424#define AFS_UUID_VERSION_TIME 0x1000 /* time-based UUID */
425#define AFS_UUID_VERSION_NAME 0x3000 /* name-based UUID */
426#define AFS_UUID_VERSION_RANDOM 0x4000 /* (pseudo-)random generated UUID */
427 u8 clock_seq_hi_and_reserved; /* clock seq hi and variant */
428#define AFS_UUID_CLOCKHI_MASK 0x3f
429#define AFS_UUID_VARIANT_STD 0x80
430 u8 clock_seq_low; /* clock seq low */
431 u8 node[6]; /* spatially unique node ID (MAC addr) */
432};
433
David Howells08e0e7c2007-04-26 15:55:03 -0700434/*****************************************************************************/
435/*
David Howells9b3f26c2009-04-03 16:42:41 +0100436 * cache.c
437 */
438#ifdef CONFIG_AFS_FSCACHE
439extern struct fscache_netfs afs_cache_netfs;
440extern struct fscache_cookie_def afs_cell_cache_index_def;
441extern struct fscache_cookie_def afs_vlocation_cache_index_def;
442extern struct fscache_cookie_def afs_volume_cache_index_def;
443extern struct fscache_cookie_def afs_vnode_cache_index_def;
444#else
445#define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL)
446#define afs_vlocation_cache_index_def (*(struct fscache_cookie_def *) NULL)
447#define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL)
448#define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL)
449#endif
450
451/*
David Howells08e0e7c2007-04-26 15:55:03 -0700452 * callback.c
453 */
454extern void afs_init_callback_state(struct afs_server *);
455extern void afs_broken_callback_work(struct work_struct *);
456extern void afs_break_callbacks(struct afs_server *, size_t,
457 struct afs_callback[]);
David Howells260a9802007-04-26 15:59:35 -0700458extern void afs_discard_callback_on_delete(struct afs_vnode *);
David Howells08e0e7c2007-04-26 15:55:03 -0700459extern void afs_give_up_callback(struct afs_vnode *);
460extern void afs_dispatch_give_up_callbacks(struct work_struct *);
461extern void afs_flush_callback_breaks(struct afs_server *);
462extern int __init afs_callback_update_init(void);
David Howellsfbb3fcb2007-05-03 03:12:46 -0700463extern void afs_callback_update_kill(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464
465/*
466 * cell.c
467 */
468extern struct rw_semaphore afs_proc_cells_sem;
469extern struct list_head afs_proc_cells;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470
David Howells08e0e7c2007-04-26 15:55:03 -0700471#define afs_get_cell(C) do { atomic_inc(&(C)->usage); } while(0)
472extern int afs_cell_init(char *);
wangleibec5eb62010-08-11 09:38:04 +0100473extern struct afs_cell *afs_cell_create(const char *, unsigned, char *, bool);
474extern struct afs_cell *afs_cell_lookup(const char *, unsigned, bool);
David Howells08e0e7c2007-04-26 15:55:03 -0700475extern struct afs_cell *afs_grab_cell(struct afs_cell *);
476extern void afs_put_cell(struct afs_cell *);
477extern void afs_cell_purge(void);
478
479/*
480 * cmservice.c
481 */
482extern bool afs_cm_incoming_call(struct afs_call *);
483
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484/*
485 * dir.c
486 */
Arjan van de Ven754661f2007-02-12 00:55:38 -0800487extern const struct inode_operations afs_dir_inode_operations;
Al Virod61dcce2011-01-12 20:04:20 -0500488extern const struct dentry_operations afs_fs_dentry_operations;
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800489extern const struct file_operations afs_dir_file_operations;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490
491/*
492 * file.c
493 */
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700494extern const struct address_space_operations afs_fs_aops;
Arjan van de Ven754661f2007-02-12 00:55:38 -0800495extern const struct inode_operations afs_file_inode_operations;
David Howells00d3b7a2007-04-26 15:57:07 -0700496extern const struct file_operations afs_file_operations;
497
498extern int afs_open(struct inode *, struct file *);
499extern int afs_release(struct inode *, struct file *);
Sami Tolvanen53f4adf2018-03-02 09:02:16 -0800500extern int afs_page_filler(struct file *, struct page *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502/*
David Howellse8d6c552007-07-15 23:40:12 -0700503 * flock.c
504 */
505extern void __exit afs_kill_lock_manager(void);
506extern void afs_lock_work(struct work_struct *);
507extern void afs_lock_may_be_available(struct afs_vnode *);
508extern int afs_lock(struct file *, int, struct file_lock *);
509extern int afs_flock(struct file *, int, struct file_lock *);
510
511/*
David Howells08e0e7c2007-04-26 15:55:03 -0700512 * fsclient.c
513 */
David Howells00d3b7a2007-04-26 15:57:07 -0700514extern int afs_fs_fetch_file_status(struct afs_server *, struct key *,
515 struct afs_vnode *, struct afs_volsync *,
David Howells08e0e7c2007-04-26 15:55:03 -0700516 const struct afs_wait_mode *);
517extern int afs_fs_give_up_callbacks(struct afs_server *,
518 const struct afs_wait_mode *);
David Howells00d3b7a2007-04-26 15:57:07 -0700519extern int afs_fs_fetch_data(struct afs_server *, struct key *,
520 struct afs_vnode *, off_t, size_t, struct page *,
David Howells08e0e7c2007-04-26 15:55:03 -0700521 const struct afs_wait_mode *);
David Howells260a9802007-04-26 15:59:35 -0700522extern int afs_fs_create(struct afs_server *, struct key *,
523 struct afs_vnode *, const char *, umode_t,
524 struct afs_fid *, struct afs_file_status *,
525 struct afs_callback *,
526 const struct afs_wait_mode *);
527extern int afs_fs_remove(struct afs_server *, struct key *,
528 struct afs_vnode *, const char *, bool,
529 const struct afs_wait_mode *);
530extern int afs_fs_link(struct afs_server *, struct key *, struct afs_vnode *,
531 struct afs_vnode *, const char *,
532 const struct afs_wait_mode *);
533extern int afs_fs_symlink(struct afs_server *, struct key *,
534 struct afs_vnode *, const char *, const char *,
535 struct afs_fid *, struct afs_file_status *,
536 const struct afs_wait_mode *);
537extern int afs_fs_rename(struct afs_server *, struct key *,
538 struct afs_vnode *, const char *,
539 struct afs_vnode *, const char *,
540 const struct afs_wait_mode *);
David Howells31143d52007-05-09 02:33:46 -0700541extern int afs_fs_store_data(struct afs_server *, struct afs_writeback *,
542 pgoff_t, pgoff_t, unsigned, unsigned,
543 const struct afs_wait_mode *);
544extern int afs_fs_setattr(struct afs_server *, struct key *,
545 struct afs_vnode *, struct iattr *,
546 const struct afs_wait_mode *);
David Howells45222b92007-05-10 22:22:20 -0700547extern int afs_fs_get_volume_status(struct afs_server *, struct key *,
548 struct afs_vnode *,
549 struct afs_volume_status *,
550 const struct afs_wait_mode *);
David Howellse8d6c552007-07-15 23:40:12 -0700551extern int afs_fs_set_lock(struct afs_server *, struct key *,
552 struct afs_vnode *, afs_lock_type_t,
553 const struct afs_wait_mode *);
554extern int afs_fs_extend_lock(struct afs_server *, struct key *,
555 struct afs_vnode *,
556 const struct afs_wait_mode *);
557extern int afs_fs_release_lock(struct afs_server *, struct key *,
558 struct afs_vnode *,
559 const struct afs_wait_mode *);
David Howells08e0e7c2007-04-26 15:55:03 -0700560
561/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 * inode.c
563 */
wangleibec5eb62010-08-11 09:38:04 +0100564extern struct inode *afs_iget_autocell(struct inode *, const char *, int,
565 struct key *);
David Howells00d3b7a2007-04-26 15:57:07 -0700566extern struct inode *afs_iget(struct super_block *, struct key *,
David Howells260a9802007-04-26 15:59:35 -0700567 struct afs_fid *, struct afs_file_status *,
568 struct afs_callback *);
David Howells416351f2007-05-09 02:33:45 -0700569extern void afs_zap_data(struct afs_vnode *);
David Howells260a9802007-04-26 15:59:35 -0700570extern int afs_validate(struct afs_vnode *, struct key *);
David Howells416351f2007-05-09 02:33:45 -0700571extern int afs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
David Howells31143d52007-05-09 02:33:46 -0700572extern int afs_setattr(struct dentry *, struct iattr *);
Al Virob57922d2010-06-07 14:34:48 -0400573extern void afs_evict_inode(struct inode *);
wangleibec5eb62010-08-11 09:38:04 +0100574extern int afs_drop_inode(struct inode *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575
576/*
577 * main.c
578 */
Tejun Heo0ad53ee2011-01-14 15:56:37 +0000579extern struct workqueue_struct *afs_wq;
David Howellsb908fe62007-04-26 15:58:17 -0700580extern struct afs_uuid afs_uuid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581
582/*
David Howells08e0e7c2007-04-26 15:55:03 -0700583 * misc.c
584 */
585extern int afs_abort_to_error(u32);
586
587/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 * mntpt.c
589 */
Arjan van de Ven754661f2007-02-12 00:55:38 -0800590extern const struct inode_operations afs_mntpt_inode_operations;
wangleibec5eb62010-08-11 09:38:04 +0100591extern const struct inode_operations afs_autocell_inode_operations;
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800592extern const struct file_operations afs_mntpt_file_operations;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593
David Howellsd18610b2011-01-14 19:04:05 +0000594extern struct vfsmount *afs_d_automount(struct path *);
David Howells00d3b7a2007-04-26 15:57:07 -0700595extern int afs_mntpt_check_symlink(struct afs_vnode *, struct key *);
David Howells08e0e7c2007-04-26 15:55:03 -0700596extern void afs_mntpt_kill_timer(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597
598/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 * proc.c
600 */
601extern int afs_proc_init(void);
602extern void afs_proc_cleanup(void);
David Howellsec268152007-04-26 15:49:28 -0700603extern int afs_proc_cell_setup(struct afs_cell *);
604extern void afs_proc_cell_remove(struct afs_cell *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605
David Howells08e0e7c2007-04-26 15:55:03 -0700606/*
607 * rxrpc.c
608 */
David Howells8324f0b2016-08-30 09:49:29 +0100609extern struct socket *afs_socket;
610
David Howells08e0e7c2007-04-26 15:55:03 -0700611extern int afs_open_socket(void);
612extern void afs_close_socket(void);
613extern int afs_make_call(struct in_addr *, struct afs_call *, gfp_t,
614 const struct afs_wait_mode *);
615extern struct afs_call *afs_alloc_flat_call(const struct afs_call_type *,
616 size_t, size_t);
617extern void afs_flat_call_destructor(struct afs_call *);
David Howells08e0e7c2007-04-26 15:55:03 -0700618extern void afs_send_empty_reply(struct afs_call *);
David Howellsb908fe62007-04-26 15:58:17 -0700619extern void afs_send_simple_reply(struct afs_call *, const void *, size_t);
David Howellsd0016482016-08-30 20:42:14 +0100620extern int afs_extract_data(struct afs_call *, void *, size_t, bool);
David Howells08e0e7c2007-04-26 15:55:03 -0700621
David Howellsd0016482016-08-30 20:42:14 +0100622static inline int afs_transfer_reply(struct afs_call *call)
David Howells372ee162016-08-03 14:11:40 +0100623{
David Howellsd0016482016-08-30 20:42:14 +0100624 return afs_extract_data(call, call->buffer, call->reply_max, false);
David Howells372ee162016-08-03 14:11:40 +0100625}
626
David Howells08e0e7c2007-04-26 15:55:03 -0700627/*
David Howells00d3b7a2007-04-26 15:57:07 -0700628 * security.c
629 */
630extern void afs_clear_permits(struct afs_vnode *);
631extern void afs_cache_permit(struct afs_vnode *, struct key *, long);
David Howells416351f2007-05-09 02:33:45 -0700632extern void afs_zap_permits(struct rcu_head *);
David Howells00d3b7a2007-04-26 15:57:07 -0700633extern struct key *afs_request_key(struct afs_cell *);
Al Viro10556cb2011-06-20 19:28:19 -0400634extern int afs_permission(struct inode *, int);
David Howells00d3b7a2007-04-26 15:57:07 -0700635
636/*
David Howells08e0e7c2007-04-26 15:55:03 -0700637 * server.c
638 */
639extern spinlock_t afs_server_peer_lock;
640
David Howells260a9802007-04-26 15:59:35 -0700641#define afs_get_server(S) \
642do { \
643 _debug("GET SERVER %d", atomic_read(&(S)->usage)); \
644 atomic_inc(&(S)->usage); \
645} while(0)
David Howells08e0e7c2007-04-26 15:55:03 -0700646
647extern struct afs_server *afs_lookup_server(struct afs_cell *,
648 const struct in_addr *);
David Howells8324f0b2016-08-30 09:49:29 +0100649extern struct afs_server *afs_find_server(const struct sockaddr_rxrpc *);
David Howells08e0e7c2007-04-26 15:55:03 -0700650extern void afs_put_server(struct afs_server *);
651extern void __exit afs_purge_servers(void);
652
653/*
David Howells00d3b7a2007-04-26 15:57:07 -0700654 * super.c
655 */
656extern int afs_fs_init(void);
657extern void afs_fs_exit(void);
658
659/*
David Howellsb908fe62007-04-26 15:58:17 -0700660 * use-rtnetlink.c
661 */
662extern int afs_get_ipv4_interfaces(struct afs_interface *, size_t, bool);
David Howellsec9c9482007-05-03 03:29:41 -0700663extern int afs_get_MAC_address(u8 *, size_t);
David Howellsb908fe62007-04-26 15:58:17 -0700664
665/*
David Howells08e0e7c2007-04-26 15:55:03 -0700666 * vlclient.c
667 */
David Howells00d3b7a2007-04-26 15:57:07 -0700668extern int afs_vl_get_entry_by_name(struct in_addr *, struct key *,
669 const char *, struct afs_cache_vlocation *,
David Howells08e0e7c2007-04-26 15:55:03 -0700670 const struct afs_wait_mode *);
David Howells00d3b7a2007-04-26 15:57:07 -0700671extern int afs_vl_get_entry_by_id(struct in_addr *, struct key *,
672 afs_volid_t, afs_voltype_t,
David Howells08e0e7c2007-04-26 15:55:03 -0700673 struct afs_cache_vlocation *,
674 const struct afs_wait_mode *);
675
676/*
677 * vlocation.c
678 */
679#define afs_get_vlocation(V) do { atomic_inc(&(V)->usage); } while(0)
680
681extern int __init afs_vlocation_update_init(void);
682extern struct afs_vlocation *afs_vlocation_lookup(struct afs_cell *,
David Howells00d3b7a2007-04-26 15:57:07 -0700683 struct key *,
David Howells08e0e7c2007-04-26 15:55:03 -0700684 const char *, size_t);
685extern void afs_put_vlocation(struct afs_vlocation *);
David Howellsfbb3fcb2007-05-03 03:12:46 -0700686extern void afs_vlocation_purge(void);
David Howells08e0e7c2007-04-26 15:55:03 -0700687
688/*
689 * vnode.c
690 */
David Howells08e0e7c2007-04-26 15:55:03 -0700691static inline struct afs_vnode *AFS_FS_I(struct inode *inode)
692{
693 return container_of(inode, struct afs_vnode, vfs_inode);
694}
695
696static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode)
697{
698 return &vnode->vfs_inode;
699}
700
David Howells260a9802007-04-26 15:59:35 -0700701extern void afs_vnode_finalise_status_update(struct afs_vnode *,
702 struct afs_server *);
David Howells00d3b7a2007-04-26 15:57:07 -0700703extern int afs_vnode_fetch_status(struct afs_vnode *, struct afs_vnode *,
704 struct key *);
705extern int afs_vnode_fetch_data(struct afs_vnode *, struct key *,
706 off_t, size_t, struct page *);
David Howells260a9802007-04-26 15:59:35 -0700707extern int afs_vnode_create(struct afs_vnode *, struct key *, const char *,
708 umode_t, struct afs_fid *, struct afs_file_status *,
709 struct afs_callback *, struct afs_server **);
710extern int afs_vnode_remove(struct afs_vnode *, struct key *, const char *,
711 bool);
712extern int afs_vnode_link(struct afs_vnode *, struct afs_vnode *, struct key *,
713 const char *);
714extern int afs_vnode_symlink(struct afs_vnode *, struct key *, const char *,
715 const char *, struct afs_fid *,
716 struct afs_file_status *, struct afs_server **);
717extern int afs_vnode_rename(struct afs_vnode *, struct afs_vnode *,
718 struct key *, const char *, const char *);
David Howells31143d52007-05-09 02:33:46 -0700719extern int afs_vnode_store_data(struct afs_writeback *, pgoff_t, pgoff_t,
720 unsigned, unsigned);
721extern int afs_vnode_setattr(struct afs_vnode *, struct key *, struct iattr *);
David Howells45222b92007-05-10 22:22:20 -0700722extern int afs_vnode_get_volume_status(struct afs_vnode *, struct key *,
723 struct afs_volume_status *);
David Howellse8d6c552007-07-15 23:40:12 -0700724extern int afs_vnode_set_lock(struct afs_vnode *, struct key *,
725 afs_lock_type_t);
726extern int afs_vnode_extend_lock(struct afs_vnode *, struct key *);
727extern int afs_vnode_release_lock(struct afs_vnode *, struct key *);
David Howells08e0e7c2007-04-26 15:55:03 -0700728
729/*
730 * volume.c
731 */
David Howells08e0e7c2007-04-26 15:55:03 -0700732#define afs_get_volume(V) do { atomic_inc(&(V)->usage); } while(0)
733
734extern void afs_put_volume(struct afs_volume *);
David Howells00d3b7a2007-04-26 15:57:07 -0700735extern struct afs_volume *afs_volume_lookup(struct afs_mount_params *);
David Howells08e0e7c2007-04-26 15:55:03 -0700736extern struct afs_server *afs_volume_pick_fileserver(struct afs_vnode *);
737extern int afs_volume_release_fileserver(struct afs_vnode *,
738 struct afs_server *, int);
739
David Howells31143d52007-05-09 02:33:46 -0700740/*
741 * write.c
742 */
743extern int afs_set_page_dirty(struct page *);
744extern void afs_put_writeback(struct afs_writeback *);
Nick Piggin15b46502008-10-15 22:04:32 -0700745extern int afs_write_begin(struct file *file, struct address_space *mapping,
746 loff_t pos, unsigned len, unsigned flags,
747 struct page **pagep, void **fsdata);
748extern int afs_write_end(struct file *file, struct address_space *mapping,
749 loff_t pos, unsigned len, unsigned copied,
750 struct page *page, void *fsdata);
David Howells31143d52007-05-09 02:33:46 -0700751extern int afs_writepage(struct page *, struct writeback_control *);
752extern int afs_writepages(struct address_space *, struct writeback_control *);
David Howells31143d52007-05-09 02:33:46 -0700753extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *);
Al Viro50b55512014-04-03 14:13:46 -0400754extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *);
David Howells31143d52007-05-09 02:33:46 -0700755extern int afs_writeback_all(struct afs_vnode *);
David Howells7286fad2017-03-16 16:27:45 +0000756extern int afs_flush(struct file *, fl_owner_t);
Josef Bacik02c24a82011-07-16 20:44:56 -0400757extern int afs_fsync(struct file *, loff_t, loff_t, int);
David Howells31143d52007-05-09 02:33:46 -0700758
759
David Howells08e0e7c2007-04-26 15:55:03 -0700760/*****************************************************************************/
761/*
762 * debug tracing
763 */
764extern unsigned afs_debug;
765
766#define dbgprintk(FMT,...) \
Sven Schnellead16df82008-04-03 10:44:01 +0100767 printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__)
David Howells08e0e7c2007-04-26 15:55:03 -0700768
Harvey Harrison530b6412008-04-30 00:55:09 -0700769#define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
770#define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
David Howells08e0e7c2007-04-26 15:55:03 -0700771#define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__)
772
773
774#if defined(__KDEBUG)
775#define _enter(FMT,...) kenter(FMT,##__VA_ARGS__)
776#define _leave(FMT,...) kleave(FMT,##__VA_ARGS__)
777#define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__)
778
779#elif defined(CONFIG_AFS_DEBUG)
780#define AFS_DEBUG_KENTER 0x01
781#define AFS_DEBUG_KLEAVE 0x02
782#define AFS_DEBUG_KDEBUG 0x04
783
784#define _enter(FMT,...) \
785do { \
786 if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \
787 kenter(FMT,##__VA_ARGS__); \
788} while (0)
789
790#define _leave(FMT,...) \
791do { \
792 if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \
793 kleave(FMT,##__VA_ARGS__); \
794} while (0)
795
796#define _debug(FMT,...) \
797do { \
798 if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \
799 kdebug(FMT,##__VA_ARGS__); \
800} while (0)
801
802#else
David Howells12fdff32010-08-12 16:54:57 +0100803#define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
804#define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
805#define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__)
David Howells08e0e7c2007-04-26 15:55:03 -0700806#endif
807
808/*
809 * debug assertion checking
810 */
811#if 1 // defined(__KDEBUGALL)
812
813#define ASSERT(X) \
814do { \
815 if (unlikely(!(X))) { \
816 printk(KERN_ERR "\n"); \
817 printk(KERN_ERR "AFS: Assertion failed\n"); \
818 BUG(); \
819 } \
820} while(0)
821
822#define ASSERTCMP(X, OP, Y) \
823do { \
824 if (unlikely(!((X) OP (Y)))) { \
825 printk(KERN_ERR "\n"); \
826 printk(KERN_ERR "AFS: Assertion failed\n"); \
827 printk(KERN_ERR "%lu " #OP " %lu is false\n", \
828 (unsigned long)(X), (unsigned long)(Y)); \
829 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
830 (unsigned long)(X), (unsigned long)(Y)); \
831 BUG(); \
832 } \
833} while(0)
834
David Howells416351f2007-05-09 02:33:45 -0700835#define ASSERTRANGE(L, OP1, N, OP2, H) \
836do { \
837 if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \
838 printk(KERN_ERR "\n"); \
839 printk(KERN_ERR "AFS: Assertion failed\n"); \
840 printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \
841 (unsigned long)(L), (unsigned long)(N), \
842 (unsigned long)(H)); \
843 printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \
844 (unsigned long)(L), (unsigned long)(N), \
845 (unsigned long)(H)); \
846 BUG(); \
847 } \
848} while(0)
849
David Howells08e0e7c2007-04-26 15:55:03 -0700850#define ASSERTIF(C, X) \
851do { \
852 if (unlikely((C) && !(X))) { \
853 printk(KERN_ERR "\n"); \
854 printk(KERN_ERR "AFS: Assertion failed\n"); \
855 BUG(); \
856 } \
857} while(0)
858
859#define ASSERTIFCMP(C, X, OP, Y) \
860do { \
861 if (unlikely((C) && !((X) OP (Y)))) { \
862 printk(KERN_ERR "\n"); \
863 printk(KERN_ERR "AFS: Assertion failed\n"); \
864 printk(KERN_ERR "%lu " #OP " %lu is false\n", \
865 (unsigned long)(X), (unsigned long)(Y)); \
866 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
867 (unsigned long)(X), (unsigned long)(Y)); \
868 BUG(); \
869 } \
870} while(0)
871
872#else
873
874#define ASSERT(X) \
875do { \
876} while(0)
877
878#define ASSERTCMP(X, OP, Y) \
879do { \
880} while(0)
881
David Howells416351f2007-05-09 02:33:45 -0700882#define ASSERTRANGE(L, OP1, N, OP2, H) \
883do { \
884} while(0)
885
David Howells08e0e7c2007-04-26 15:55:03 -0700886#define ASSERTIF(C, X) \
887do { \
888} while(0)
889
890#define ASSERTIFCMP(C, X, OP, Y) \
891do { \
892} while(0)
893
894#endif /* __KDEBUGALL */