3 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
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.
12 #include <linux/compiler.h>
13 #include <linux/kernel.h>
15 #include <linux/pagemap.h>
16 #include <linux/skbuff.h>
17 #include <linux/rxrpc.h>
18 #include <linux/key.h>
22 #define AFS_CELL_MAX_ADDRS 15
27 AFS_VL_NEW
, /* new, uninitialised record */
28 AFS_VL_CREATING
, /* creating record */
29 AFS_VL_VALID
, /* record is pending */
30 AFS_VL_NO_VOLUME
, /* no such volume available */
31 AFS_VL_UPDATING
, /* update in progress */
32 AFS_VL_VOLUME_DELETED
, /* volume was deleted */
33 AFS_VL_UNCERTAIN
, /* uncertain state (update failed) */
34 } __attribute__((packed
)) afs_vlocation_state_t
;
36 struct afs_mount_params
{
37 bool rwpath
; /* T if the parent should be considered R/W */
38 bool force
; /* T to force cell type */
39 afs_voltype_t type
; /* type of volume requested */
40 int volnamesz
; /* size of volume name */
41 const char *volname
; /* name of volume to mount */
42 struct afs_cell
*cell
; /* cell in which to find volume */
43 struct afs_volume
*volume
; /* volume record */
44 struct key
*key
; /* key to use for secure mounting */
48 * definition of how to wait for the completion of an operation
50 struct afs_wait_mode
{
51 /* RxRPC received message notification */
52 void (*rx_wakeup
)(struct afs_call
*call
);
54 /* synchronous call waiter and call dispatched notification */
55 int (*wait
)(struct afs_call
*call
);
57 /* asynchronous call completion */
58 void (*async_complete
)(void *reply
, int error
);
61 extern const struct afs_wait_mode afs_sync_call
;
62 extern const struct afs_wait_mode afs_async_call
;
65 * a record of an in-progress RxRPC call
68 const struct afs_call_type
*type
; /* type of call */
69 const struct afs_wait_mode
*wait_mode
; /* completion wait mode */
70 wait_queue_head_t waitq
; /* processes awaiting completion */
71 struct work_struct async_work
; /* asynchronous work processor */
72 struct work_struct work
; /* actual work processor */
73 struct sk_buff_head rx_queue
; /* received packets */
74 struct rxrpc_call
*rxcall
; /* RxRPC call handle */
75 struct key
*key
; /* security for this call */
76 struct afs_server
*server
; /* server affected by incoming CM call */
77 void *request
; /* request data (first part) */
78 void *request2
; /* request data (second part) */
79 void *buffer
; /* reply receive buffer */
80 void *reply
; /* reply buffer (first part) */
81 void *reply2
; /* reply buffer (second part) */
82 void *reply3
; /* reply buffer (third part) */
83 void *reply4
; /* reply buffer (fourth part) */
84 enum { /* call state */
85 AFS_CALL_REQUESTING
, /* request is being sent for outgoing call */
86 AFS_CALL_AWAIT_REPLY
, /* awaiting reply to outgoing call */
87 AFS_CALL_AWAIT_OP_ID
, /* awaiting op ID on incoming call */
88 AFS_CALL_AWAIT_REQUEST
, /* awaiting request data on incoming call */
89 AFS_CALL_REPLYING
, /* replying to incoming call */
90 AFS_CALL_AWAIT_ACK
, /* awaiting final ACK of incoming call */
91 AFS_CALL_COMPLETE
, /* successfully completed */
92 AFS_CALL_BUSY
, /* server was busy */
93 AFS_CALL_ABORTED
, /* call was aborted */
94 AFS_CALL_ERROR
, /* call failed due to error */
96 int error
; /* error code */
97 unsigned request_size
; /* size of request data */
98 unsigned reply_max
; /* maximum size of reply */
99 unsigned reply_size
; /* current size of reply */
100 unsigned short offset
; /* offset into received data store */
101 unsigned char unmarshall
; /* unmarshalling phase */
102 bool incoming
; /* T if incoming call */
103 u16 service_id
; /* RxRPC service ID to call */
104 __be16 port
; /* target UDP port */
105 __be32 operation_ID
; /* operation ID for an incoming call */
106 u32 count
; /* count for use in unmarshalling */
107 __be32 tmp
; /* place to extract temporary data */
110 struct afs_call_type
{
113 /* deliver request or reply data to an call
114 * - returning an error will cause the call to be aborted
116 int (*deliver
)(struct afs_call
*call
, struct sk_buff
*skb
,
119 /* map an abort code to an error number */
120 int (*abort_to_error
)(u32 abort_code
);
122 /* clean up a call */
123 void (*destructor
)(struct afs_call
*call
);
127 * AFS superblock private data
128 * - there's one superblock per volume
130 struct afs_super_info
{
131 struct afs_volume
*volume
; /* volume record */
132 char rwparent
; /* T if parent is R/W AFS volume */
135 static inline struct afs_super_info
*AFS_FS_S(struct super_block
*sb
)
137 return sb
->s_fs_info
;
140 extern struct file_system_type afs_fs_type
;
143 * entry in the cached cell catalogue
145 struct afs_cache_cell
{
146 char name
[AFS_MAXCELLNAME
]; /* cell name (padded with NULs) */
147 struct in_addr vl_servers
[15]; /* cached cell VL servers */
155 struct list_head link
; /* main cell list link */
156 struct key
*anonymous_key
; /* anonymous user key for this cell */
157 struct list_head proc_link
; /* /proc cell list link */
158 struct proc_dir_entry
*proc_dir
; /* /proc dir for this cell */
159 #ifdef AFS_CACHING_SUPPORT
160 struct cachefs_cookie
*cache
; /* caching cookie */
163 /* server record management */
164 rwlock_t servers_lock
; /* active server list lock */
165 struct list_head servers
; /* active server list */
167 /* volume location record management */
168 struct rw_semaphore vl_sem
; /* volume management serialisation semaphore */
169 struct list_head vl_list
; /* cell's active VL record list */
170 spinlock_t vl_lock
; /* vl_list lock */
171 unsigned short vl_naddrs
; /* number of VL servers in addr list */
172 unsigned short vl_curr_svix
; /* current server index */
173 struct in_addr vl_addrs
[AFS_CELL_MAX_ADDRS
]; /* cell VL server addresses */
175 char name
[0]; /* cell name - must go last */
179 * entry in the cached volume location catalogue
181 struct afs_cache_vlocation
{
182 /* volume name (lowercase, padded with NULs) */
183 uint8_t name
[AFS_MAXVOLNAME
+ 1];
185 uint8_t nservers
; /* number of entries used in servers[] */
186 uint8_t vidmask
; /* voltype mask for vid[] */
187 uint8_t srvtmask
[8]; /* voltype masks for servers[] */
188 #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */
189 #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */
190 #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */
192 afs_volid_t vid
[3]; /* volume IDs for R/W, R/O and Bak volumes */
193 struct in_addr servers
[8]; /* fileserver addresses */
194 time_t rtime
; /* last retrieval time */
198 * volume -> vnode hash table entry
200 struct afs_cache_vhash
{
201 afs_voltype_t vtype
; /* which volume variation */
202 uint8_t hash_bucket
; /* which hash bucket this represents */
203 } __attribute__((packed
));
206 * AFS volume location record
208 struct afs_vlocation
{
210 time_t time_of_death
; /* time at which put reduced usage to 0 */
211 struct list_head link
; /* link in cell volume location list */
212 struct list_head grave
; /* link in master graveyard list */
213 struct list_head update
; /* link in master update list */
214 struct afs_cell
*cell
; /* cell to which volume belongs */
215 #ifdef AFS_CACHING_SUPPORT
216 struct cachefs_cookie
*cache
; /* caching cookie */
218 struct afs_cache_vlocation vldb
; /* volume information DB record */
219 struct afs_volume
*vols
[3]; /* volume access record pointer (index by type) */
220 wait_queue_head_t waitq
; /* status change waitqueue */
221 time_t update_at
; /* time at which record should be updated */
222 spinlock_t lock
; /* access lock */
223 afs_vlocation_state_t state
; /* volume location state */
224 unsigned short upd_rej_cnt
; /* ENOMEDIUM count during update */
225 unsigned short upd_busy_cnt
; /* EBUSY count during update */
226 bool valid
; /* T if valid */
230 * AFS fileserver record
234 time_t time_of_death
; /* time at which put reduced usage to 0 */
235 struct in_addr addr
; /* server address */
236 struct afs_cell
*cell
; /* cell in which server resides */
237 struct list_head link
; /* link in cell's server list */
238 struct list_head grave
; /* link in master graveyard list */
239 struct rb_node master_rb
; /* link in master by-addr tree */
240 struct rw_semaphore sem
; /* access lock */
242 /* file service access */
243 struct rb_root fs_vnodes
; /* vnodes backed by this server (ordered by FID) */
244 unsigned long fs_act_jif
; /* time at which last activity occurred */
245 unsigned long fs_dead_jif
; /* time at which no longer to be considered dead */
246 spinlock_t fs_lock
; /* access lock */
247 int fs_state
; /* 0 or reason FS currently marked dead (-errno) */
249 /* callback promise management */
250 struct rb_root cb_promises
; /* vnode expiration list (ordered earliest first) */
251 struct delayed_work cb_updater
; /* callback updater */
252 struct delayed_work cb_break_work
; /* collected break dispatcher */
253 wait_queue_head_t cb_break_waitq
; /* space available in cb_break waitqueue */
254 spinlock_t cb_lock
; /* access lock */
255 struct afs_callback cb_break
[64]; /* ring of callbacks awaiting breaking */
256 atomic_t cb_break_n
; /* number of pending breaks */
257 u8 cb_break_head
; /* head of callback breaking ring */
258 u8 cb_break_tail
; /* tail of callback breaking ring */
262 * AFS volume access record
266 struct afs_cell
*cell
; /* cell to which belongs (unrefd ptr) */
267 struct afs_vlocation
*vlocation
; /* volume location */
268 #ifdef AFS_CACHING_SUPPORT
269 struct cachefs_cookie
*cache
; /* caching cookie */
271 afs_volid_t vid
; /* volume ID */
272 afs_voltype_t type
; /* type of volume */
273 char type_force
; /* force volume type (suppress R/O -> R/W) */
274 unsigned short nservers
; /* number of server slots filled */
275 unsigned short rjservers
; /* number of servers discarded due to -ENOMEDIUM */
276 struct afs_server
*servers
[8]; /* servers on which volume resides (ordered) */
277 struct rw_semaphore server_sem
; /* lock for accessing current server */
281 * vnode catalogue entry
283 struct afs_cache_vnode
{
284 afs_vnodeid_t vnode_id
; /* vnode ID */
285 unsigned vnode_unique
; /* vnode ID uniquifier */
286 afs_dataversion_t data_version
; /* data version */
290 * AFS inode private data
293 struct inode vfs_inode
; /* the VFS's inode record */
295 struct afs_volume
*volume
; /* volume on which vnode resides */
296 struct afs_server
*server
; /* server currently supplying this file */
297 struct afs_fid fid
; /* the file identifier for this inode */
298 struct afs_file_status status
; /* AFS status info for this file */
299 #ifdef AFS_CACHING_SUPPORT
300 struct cachefs_cookie
*cache
; /* caching cookie */
302 struct afs_permits
*permits
; /* cache of permits so far obtained */
303 struct mutex permits_lock
; /* lock for altering permits list */
304 struct mutex validate_lock
; /* lock for validating this vnode */
305 wait_queue_head_t update_waitq
; /* status fetch waitqueue */
306 int update_cnt
; /* number of outstanding ops that will update the
308 spinlock_t lock
; /* waitqueue/flags lock */
310 #define AFS_VNODE_CB_BROKEN 0 /* set if vnode's callback was broken */
311 #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */
312 #define AFS_VNODE_MODIFIED 2 /* set if vnode's data modified */
313 #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */
314 #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */
315 #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */
317 long acl_order
; /* ACL check count (callback break count) */
319 /* outstanding callback notification on this file */
320 struct rb_node server_rb
; /* link in server->fs_vnodes */
321 struct rb_node cb_promise
; /* link in server->cb_promises */
322 struct work_struct cb_broken_work
; /* work to be done on callback break */
323 time_t cb_expires
; /* time at which callback expires */
324 time_t cb_expires_at
; /* time used to order cb_promise */
325 unsigned cb_version
; /* callback version */
326 unsigned cb_expiry
; /* callback expiry time */
327 afs_callback_type_t cb_type
; /* type of callback */
328 bool cb_promised
; /* true if promise still holds */
332 * cached security record for one user's attempt to access a vnode
335 struct key
*key
; /* RxRPC ticket holding a security context */
336 afs_access_t access_mask
; /* access mask for this key */
340 * cache of security records from attempts to access a vnode
343 struct rcu_head rcu
; /* disposal procedure */
344 int count
; /* number of records */
345 struct afs_permit permits
[0]; /* the permits so far examined */
349 * record of one of a system's set of network interfaces
351 struct afs_interface
{
352 struct in_addr address
; /* IPv4 address bound to interface */
353 struct in_addr netmask
; /* netmask applied to address */
354 unsigned mtu
; /* MTU of interface */
358 * UUID definition [internet draft]
359 * - the timestamp is a 60-bit value, split 32/16/12, and goes in 100ns
360 * increments since midnight 15th October 1582
361 * - add AFS_UUID_TO_UNIX_TIME to convert unix time in 100ns units to UUID
363 * - the clock sequence is a 14-bit counter to avoid duplicate times
366 u32 time_low
; /* low part of timestamp */
367 u16 time_mid
; /* mid part of timestamp */
368 u16 time_hi_and_version
; /* high part of timestamp and version */
369 #define AFS_UUID_TO_UNIX_TIME 0x01b21dd213814000ULL
370 #define AFS_UUID_TIMEHI_MASK 0x0fff
371 #define AFS_UUID_VERSION_TIME 0x1000 /* time-based UUID */
372 #define AFS_UUID_VERSION_NAME 0x3000 /* name-based UUID */
373 #define AFS_UUID_VERSION_RANDOM 0x4000 /* (pseudo-)random generated UUID */
374 u8 clock_seq_hi_and_reserved
; /* clock seq hi and variant */
375 #define AFS_UUID_CLOCKHI_MASK 0x3f
376 #define AFS_UUID_VARIANT_STD 0x80
377 u8 clock_seq_low
; /* clock seq low */
378 u8 node
[6]; /* spatially unique node ID (MAC addr) */
381 /*****************************************************************************/
385 extern void afs_init_callback_state(struct afs_server
*);
386 extern void afs_broken_callback_work(struct work_struct
*);
387 extern void afs_break_callbacks(struct afs_server
*, size_t,
388 struct afs_callback
[]);
389 extern void afs_discard_callback_on_delete(struct afs_vnode
*);
390 extern void afs_give_up_callback(struct afs_vnode
*);
391 extern void afs_dispatch_give_up_callbacks(struct work_struct
*);
392 extern void afs_flush_callback_breaks(struct afs_server
*);
393 extern int __init
afs_callback_update_init(void);
394 extern void afs_callback_update_kill(void);
399 extern struct rw_semaphore afs_proc_cells_sem
;
400 extern struct list_head afs_proc_cells
;
401 #ifdef AFS_CACHING_SUPPORT
402 extern struct cachefs_index_def afs_cache_cell_index_def
;
405 #define afs_get_cell(C) do { atomic_inc(&(C)->usage); } while(0)
406 extern int afs_cell_init(char *);
407 extern struct afs_cell
*afs_cell_create(const char *, char *);
408 extern struct afs_cell
*afs_cell_lookup(const char *, unsigned);
409 extern struct afs_cell
*afs_grab_cell(struct afs_cell
*);
410 extern void afs_put_cell(struct afs_cell
*);
411 extern void afs_cell_purge(void);
416 extern bool afs_cm_incoming_call(struct afs_call
*);
421 extern const struct inode_operations afs_dir_inode_operations
;
422 extern const struct file_operations afs_dir_file_operations
;
424 extern int afs_permission(struct inode
*, int, struct nameidata
*);
429 extern const struct address_space_operations afs_fs_aops
;
430 extern const struct inode_operations afs_file_inode_operations
;
431 extern const struct file_operations afs_file_operations
;
433 extern int afs_open(struct inode
*, struct file
*);
434 extern int afs_release(struct inode
*, struct file
*);
439 extern int afs_fs_fetch_file_status(struct afs_server
*, struct key
*,
440 struct afs_vnode
*, struct afs_volsync
*,
441 const struct afs_wait_mode
*);
442 extern int afs_fs_give_up_callbacks(struct afs_server
*,
443 const struct afs_wait_mode
*);
444 extern int afs_fs_fetch_data(struct afs_server
*, struct key
*,
445 struct afs_vnode
*, off_t
, size_t, struct page
*,
446 const struct afs_wait_mode
*);
447 extern int afs_fs_create(struct afs_server
*, struct key
*,
448 struct afs_vnode
*, const char *, umode_t
,
449 struct afs_fid
*, struct afs_file_status
*,
450 struct afs_callback
*,
451 const struct afs_wait_mode
*);
452 extern int afs_fs_remove(struct afs_server
*, struct key
*,
453 struct afs_vnode
*, const char *, bool,
454 const struct afs_wait_mode
*);
455 extern int afs_fs_link(struct afs_server
*, struct key
*, struct afs_vnode
*,
456 struct afs_vnode
*, const char *,
457 const struct afs_wait_mode
*);
458 extern int afs_fs_symlink(struct afs_server
*, struct key
*,
459 struct afs_vnode
*, const char *, const char *,
460 struct afs_fid
*, struct afs_file_status
*,
461 const struct afs_wait_mode
*);
462 extern int afs_fs_rename(struct afs_server
*, struct key
*,
463 struct afs_vnode
*, const char *,
464 struct afs_vnode
*, const char *,
465 const struct afs_wait_mode
*);
470 extern struct inode
*afs_iget(struct super_block
*, struct key
*,
471 struct afs_fid
*, struct afs_file_status
*,
472 struct afs_callback
*);
473 extern void afs_zap_data(struct afs_vnode
*);
474 extern int afs_validate(struct afs_vnode
*, struct key
*);
475 extern int afs_getattr(struct vfsmount
*, struct dentry
*, struct kstat
*);
476 extern void afs_clear_inode(struct inode
*);
481 extern struct afs_uuid afs_uuid
;
482 #ifdef AFS_CACHING_SUPPORT
483 extern struct cachefs_netfs afs_cache_netfs
;
489 extern int afs_abort_to_error(u32
);
494 extern const struct inode_operations afs_mntpt_inode_operations
;
495 extern const struct file_operations afs_mntpt_file_operations
;
496 extern unsigned long afs_mntpt_expiry_timeout
;
498 extern int afs_mntpt_check_symlink(struct afs_vnode
*, struct key
*);
499 extern void afs_mntpt_kill_timer(void);
500 extern void afs_umount_begin(struct vfsmount
*, int);
505 extern int afs_proc_init(void);
506 extern void afs_proc_cleanup(void);
507 extern int afs_proc_cell_setup(struct afs_cell
*);
508 extern void afs_proc_cell_remove(struct afs_cell
*);
513 extern int afs_open_socket(void);
514 extern void afs_close_socket(void);
515 extern int afs_make_call(struct in_addr
*, struct afs_call
*, gfp_t
,
516 const struct afs_wait_mode
*);
517 extern struct afs_call
*afs_alloc_flat_call(const struct afs_call_type
*,
519 extern void afs_flat_call_destructor(struct afs_call
*);
520 extern void afs_transfer_reply(struct afs_call
*, struct sk_buff
*);
521 extern void afs_send_empty_reply(struct afs_call
*);
522 extern void afs_send_simple_reply(struct afs_call
*, const void *, size_t);
523 extern int afs_extract_data(struct afs_call
*, struct sk_buff
*, bool, void *,
529 extern void afs_clear_permits(struct afs_vnode
*);
530 extern void afs_cache_permit(struct afs_vnode
*, struct key
*, long);
531 extern void afs_zap_permits(struct rcu_head
*);
532 extern struct key
*afs_request_key(struct afs_cell
*);
533 extern int afs_permission(struct inode
*, int, struct nameidata
*);
538 extern spinlock_t afs_server_peer_lock
;
540 #define afs_get_server(S) \
542 _debug("GET SERVER %d", atomic_read(&(S)->usage)); \
543 atomic_inc(&(S)->usage); \
546 extern struct afs_server
*afs_lookup_server(struct afs_cell
*,
547 const struct in_addr
*);
548 extern struct afs_server
*afs_find_server(const struct in_addr
*);
549 extern void afs_put_server(struct afs_server
*);
550 extern void __exit
afs_purge_servers(void);
555 extern int afs_fs_init(void);
556 extern void afs_fs_exit(void);
561 extern int afs_get_ipv4_interfaces(struct afs_interface
*, size_t, bool);
562 extern int afs_get_MAC_address(u8
*, size_t);
567 #ifdef AFS_CACHING_SUPPORT
568 extern struct cachefs_index_def afs_vlocation_cache_index_def
;
571 extern int afs_vl_get_entry_by_name(struct in_addr
*, struct key
*,
572 const char *, struct afs_cache_vlocation
*,
573 const struct afs_wait_mode
*);
574 extern int afs_vl_get_entry_by_id(struct in_addr
*, struct key
*,
575 afs_volid_t
, afs_voltype_t
,
576 struct afs_cache_vlocation
*,
577 const struct afs_wait_mode
*);
582 #define afs_get_vlocation(V) do { atomic_inc(&(V)->usage); } while(0)
584 extern int __init
afs_vlocation_update_init(void);
585 extern struct afs_vlocation
*afs_vlocation_lookup(struct afs_cell
*,
587 const char *, size_t);
588 extern void afs_put_vlocation(struct afs_vlocation
*);
589 extern void afs_vlocation_purge(void);
594 #ifdef AFS_CACHING_SUPPORT
595 extern struct cachefs_index_def afs_vnode_cache_index_def
;
598 extern struct afs_timer_ops afs_vnode_cb_timed_out_ops
;
600 static inline struct afs_vnode
*AFS_FS_I(struct inode
*inode
)
602 return container_of(inode
, struct afs_vnode
, vfs_inode
);
605 static inline struct inode
*AFS_VNODE_TO_I(struct afs_vnode
*vnode
)
607 return &vnode
->vfs_inode
;
610 extern void afs_vnode_finalise_status_update(struct afs_vnode
*,
611 struct afs_server
*);
612 extern int afs_vnode_fetch_status(struct afs_vnode
*, struct afs_vnode
*,
614 extern int afs_vnode_fetch_data(struct afs_vnode
*, struct key
*,
615 off_t
, size_t, struct page
*);
616 extern int afs_vnode_create(struct afs_vnode
*, struct key
*, const char *,
617 umode_t
, struct afs_fid
*, struct afs_file_status
*,
618 struct afs_callback
*, struct afs_server
**);
619 extern int afs_vnode_remove(struct afs_vnode
*, struct key
*, const char *,
621 extern int afs_vnode_link(struct afs_vnode
*, struct afs_vnode
*, struct key
*,
623 extern int afs_vnode_symlink(struct afs_vnode
*, struct key
*, const char *,
624 const char *, struct afs_fid
*,
625 struct afs_file_status
*, struct afs_server
**);
626 extern int afs_vnode_rename(struct afs_vnode
*, struct afs_vnode
*,
627 struct key
*, const char *, const char *);
632 #ifdef AFS_CACHING_SUPPORT
633 extern struct cachefs_index_def afs_volume_cache_index_def
;
636 #define afs_get_volume(V) do { atomic_inc(&(V)->usage); } while(0)
638 extern void afs_put_volume(struct afs_volume
*);
639 extern struct afs_volume
*afs_volume_lookup(struct afs_mount_params
*);
640 extern struct afs_server
*afs_volume_pick_fileserver(struct afs_vnode
*);
641 extern int afs_volume_release_fileserver(struct afs_vnode
*,
642 struct afs_server
*, int);
644 /*****************************************************************************/
648 extern unsigned afs_debug
;
650 #define dbgprintk(FMT,...) \
651 printk("[%x%-6.6s] "FMT"\n", smp_processor_id(), current->comm ,##__VA_ARGS__)
653 /* make sure we maintain the format strings, even when debugging is disabled */
654 static inline __attribute__((format(printf
,1,2)))
655 void _dbprintk(const char *fmt
, ...)
659 #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__FUNCTION__ ,##__VA_ARGS__)
660 #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__FUNCTION__ ,##__VA_ARGS__)
661 #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__)
664 #if defined(__KDEBUG)
665 #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__)
666 #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__)
667 #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__)
669 #elif defined(CONFIG_AFS_DEBUG)
670 #define AFS_DEBUG_KENTER 0x01
671 #define AFS_DEBUG_KLEAVE 0x02
672 #define AFS_DEBUG_KDEBUG 0x04
674 #define _enter(FMT,...) \
676 if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \
677 kenter(FMT,##__VA_ARGS__); \
680 #define _leave(FMT,...) \
682 if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \
683 kleave(FMT,##__VA_ARGS__); \
686 #define _debug(FMT,...) \
688 if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \
689 kdebug(FMT,##__VA_ARGS__); \
693 #define _enter(FMT,...) _dbprintk("==> %s("FMT")",__FUNCTION__ ,##__VA_ARGS__)
694 #define _leave(FMT,...) _dbprintk("<== %s()"FMT"",__FUNCTION__ ,##__VA_ARGS__)
695 #define _debug(FMT,...) _dbprintk(" "FMT ,##__VA_ARGS__)
699 * debug assertion checking
701 #if 1 // defined(__KDEBUGALL)
705 if (unlikely(!(X))) { \
706 printk(KERN_ERR "\n"); \
707 printk(KERN_ERR "AFS: Assertion failed\n"); \
712 #define ASSERTCMP(X, OP, Y) \
714 if (unlikely(!((X) OP (Y)))) { \
715 printk(KERN_ERR "\n"); \
716 printk(KERN_ERR "AFS: Assertion failed\n"); \
717 printk(KERN_ERR "%lu " #OP " %lu is false\n", \
718 (unsigned long)(X), (unsigned long)(Y)); \
719 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
720 (unsigned long)(X), (unsigned long)(Y)); \
725 #define ASSERTRANGE(L, OP1, N, OP2, H) \
727 if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \
728 printk(KERN_ERR "\n"); \
729 printk(KERN_ERR "AFS: Assertion failed\n"); \
730 printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \
731 (unsigned long)(L), (unsigned long)(N), \
732 (unsigned long)(H)); \
733 printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \
734 (unsigned long)(L), (unsigned long)(N), \
735 (unsigned long)(H)); \
740 #define ASSERTIF(C, X) \
742 if (unlikely((C) && !(X))) { \
743 printk(KERN_ERR "\n"); \
744 printk(KERN_ERR "AFS: Assertion failed\n"); \
749 #define ASSERTIFCMP(C, X, OP, Y) \
751 if (unlikely((C) && !((X) OP (Y)))) { \
752 printk(KERN_ERR "\n"); \
753 printk(KERN_ERR "AFS: Assertion failed\n"); \
754 printk(KERN_ERR "%lu " #OP " %lu is false\n", \
755 (unsigned long)(X), (unsigned long)(Y)); \
756 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
757 (unsigned long)(X), (unsigned long)(Y)); \
768 #define ASSERTCMP(X, OP, Y) \
772 #define ASSERTRANGE(L, OP1, N, OP2, H) \
776 #define ASSERTIF(C, X) \
780 #define ASSERTIFCMP(C, X, OP, Y) \
784 #endif /* __KDEBUGALL */