1
2
3
4
5
6
7
8#include <linux/compiler.h>
9#include <linux/kernel.h>
10#include <linux/ktime.h>
11#include <linux/fs.h>
12#include <linux/pagemap.h>
13#include <linux/rxrpc.h>
14#include <linux/key.h>
15#include <linux/workqueue.h>
16#include <linux/sched.h>
17#include <linux/fscache.h>
18#include <linux/backing-dev.h>
19#include <linux/uuid.h>
20#include <linux/mm_types.h>
21#include <linux/dns_resolver.h>
22#include <net/net_namespace.h>
23#include <net/netns/generic.h>
24#include <net/sock.h>
25#include <net/af_rxrpc.h>
26
27#include "afs.h"
28#include "afs_vl.h"
29
30#define AFS_CELL_MAX_ADDRS 15
31
32struct pagevec;
33struct afs_call;
34
35
36
37
38
39enum afs_flock_mode {
40 afs_flock_mode_unset,
41 afs_flock_mode_local,
42 afs_flock_mode_openafs,
43 afs_flock_mode_strict,
44 afs_flock_mode_write,
45};
46
47struct afs_fs_context {
48 bool force;
49 bool autocell;
50 bool dyn_root;
51 bool no_cell;
52 enum afs_flock_mode flock_mode;
53 afs_voltype_t type;
54 unsigned int volnamesz;
55 const char *volname;
56 struct afs_net *net;
57 struct afs_cell *cell;
58 struct afs_volume *volume;
59 struct key *key;
60};
61
62enum afs_call_state {
63 AFS_CALL_CL_REQUESTING,
64 AFS_CALL_CL_AWAIT_REPLY,
65 AFS_CALL_CL_PROC_REPLY,
66 AFS_CALL_SV_AWAIT_OP_ID,
67 AFS_CALL_SV_AWAIT_REQUEST,
68 AFS_CALL_SV_REPLYING,
69 AFS_CALL_SV_AWAIT_ACK,
70 AFS_CALL_COMPLETE,
71};
72
73
74
75
76struct afs_addr_list {
77 struct rcu_head rcu;
78 refcount_t usage;
79 u32 version;
80 unsigned char max_addrs;
81 unsigned char nr_addrs;
82 unsigned char preferred;
83 unsigned char nr_ipv4;
84 enum dns_record_source source:8;
85 enum dns_lookup_status status:8;
86 unsigned long failed;
87 unsigned long responded;
88 struct sockaddr_rxrpc addrs[];
89#define AFS_MAX_ADDRESSES ((unsigned int)(sizeof(unsigned long) * 8))
90};
91
92
93
94
95struct afs_call {
96 const struct afs_call_type *type;
97 struct afs_addr_list *alist;
98 wait_queue_head_t waitq;
99 struct work_struct async_work;
100 struct work_struct work;
101 struct rxrpc_call *rxcall;
102 struct key *key;
103 struct afs_net *net;
104 struct afs_server *server;
105 struct afs_vlserver *vlserver;
106 void *request;
107 struct iov_iter def_iter;
108 struct iov_iter *iter;
109 union {
110 struct kvec kvec[1];
111 struct bio_vec bvec[1];
112 };
113 void *buffer;
114 union {
115 long ret0;
116 struct afs_addr_list *ret_alist;
117 struct afs_vldb_entry *ret_vldb;
118 char *ret_str;
119 };
120 struct afs_operation *op;
121 unsigned int server_index;
122 atomic_t usage;
123 enum afs_call_state state;
124 spinlock_t state_lock;
125 int error;
126 u32 abort_code;
127 unsigned int max_lifespan;
128 unsigned request_size;
129 unsigned reply_max;
130 unsigned count2;
131 unsigned char unmarshall;
132 unsigned char addr_ix;
133 bool drop_ref;
134 bool send_pages;
135 bool need_attention;
136 bool async;
137 bool upgrade;
138 bool have_reply_time;
139 bool intr;
140 bool unmarshalling_error;
141 u16 service_id;
142 unsigned int debug_id;
143 u32 operation_ID;
144 u32 count;
145 union {
146 struct {
147 __be32 tmp_u;
148 __be32 tmp;
149 } __attribute__((packed));
150 __be64 tmp64;
151 };
152 ktime_t reply_time;
153};
154
155struct afs_call_type {
156 const char *name;
157 unsigned int op;
158
159
160
161
162 int (*deliver)(struct afs_call *call);
163
164
165 void (*destructor)(struct afs_call *call);
166
167
168 void (*work)(struct work_struct *work);
169
170
171 void (*done)(struct afs_call *call);
172};
173
174
175
176
177struct afs_wb_key {
178 refcount_t usage;
179 struct key *key;
180 struct list_head vnode_link;
181};
182
183
184
185
186struct afs_file {
187 struct key *key;
188 struct afs_wb_key *wb;
189};
190
191static inline struct key *afs_file_key(struct file *file)
192{
193 struct afs_file *af = file->private_data;
194
195 return af->key;
196}
197
198
199
200
201struct afs_read {
202 loff_t pos;
203 loff_t len;
204 loff_t actual_len;
205 loff_t remain;
206 loff_t file_size;
207 afs_dataversion_t data_version;
208 refcount_t usage;
209 unsigned int index;
210 unsigned int nr_pages;
211 unsigned int offset;
212 struct afs_vnode *vnode;
213 void (*page_done)(struct afs_read *);
214 struct page **pages;
215 struct page *array[];
216};
217
218
219
220
221
222struct afs_super_info {
223 struct net *net_ns;
224 struct afs_cell *cell;
225 struct afs_volume *volume;
226 enum afs_flock_mode flock_mode:8;
227 bool dyn_root;
228};
229
230static inline struct afs_super_info *AFS_FS_S(struct super_block *sb)
231{
232 return sb->s_fs_info;
233}
234
235extern struct file_system_type afs_fs_type;
236
237
238
239
240struct afs_sysnames {
241#define AFS_NR_SYSNAME 16
242 char *subs[AFS_NR_SYSNAME];
243 refcount_t usage;
244 unsigned short nr;
245 char blank[1];
246};
247
248
249
250
251struct afs_net {
252 struct net *net;
253 struct afs_uuid uuid;
254 bool live;
255
256
257 struct socket *socket;
258 struct afs_call *spare_incoming_call;
259 struct work_struct charge_preallocation_work;
260 struct mutex socket_mutex;
261 atomic_t nr_outstanding_calls;
262 atomic_t nr_superblocks;
263
264
265 struct rb_root cells;
266 struct afs_cell *ws_cell;
267 struct work_struct cells_manager;
268 struct timer_list cells_timer;
269 atomic_t cells_outstanding;
270 struct rw_semaphore cells_lock;
271 struct mutex cells_alias_lock;
272
273 struct mutex proc_cells_lock;
274 struct hlist_head proc_cells;
275
276
277
278
279
280 seqlock_t fs_lock;
281 struct rb_root fs_servers;
282 struct list_head fs_probe_fast;
283 struct list_head fs_probe_slow;
284 struct hlist_head fs_proc;
285
286 struct hlist_head fs_addresses4;
287 struct hlist_head fs_addresses6;
288 seqlock_t fs_addr_lock;
289
290 struct work_struct fs_manager;
291 struct timer_list fs_timer;
292
293 struct work_struct fs_prober;
294 struct timer_list fs_probe_timer;
295 atomic_t servers_outstanding;
296
297
298 struct mutex lock_manager_mutex;
299
300
301 struct super_block *dynroot_sb;
302 struct proc_dir_entry *proc_afs;
303 struct afs_sysnames *sysnames;
304 rwlock_t sysnames_lock;
305
306
307 atomic_t n_lookup;
308 atomic_t n_reval;
309 atomic_t n_inval;
310 atomic_t n_relpg;
311 atomic_t n_read_dir;
312 atomic_t n_dir_cr;
313 atomic_t n_dir_rm;
314 atomic_t n_stores;
315 atomic_long_t n_store_bytes;
316 atomic_long_t n_fetch_bytes;
317 atomic_t n_fetches;
318};
319
320extern const char afs_init_sysname[];
321
322enum afs_cell_state {
323 AFS_CELL_UNSET,
324 AFS_CELL_ACTIVATING,
325 AFS_CELL_ACTIVE,
326 AFS_CELL_DEACTIVATING,
327 AFS_CELL_INACTIVE,
328 AFS_CELL_FAILED,
329 AFS_CELL_REMOVED,
330};
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351struct afs_cell {
352 union {
353 struct rcu_head rcu;
354 struct rb_node net_node;
355 };
356 struct afs_net *net;
357 struct afs_cell *alias_of;
358 struct afs_volume *root_volume;
359 struct key *anonymous_key;
360 struct work_struct manager;
361 struct hlist_node proc_link;
362#ifdef CONFIG_AFS_FSCACHE
363 struct fscache_cookie *cache;
364#endif
365 time64_t dns_expiry;
366 time64_t last_inactive;
367 atomic_t ref;
368 atomic_t active;
369 unsigned long flags;
370#define AFS_CELL_FL_NO_GC 0
371#define AFS_CELL_FL_DO_LOOKUP 1
372#define AFS_CELL_FL_CHECK_ALIAS 2
373 enum afs_cell_state state;
374 short error;
375 enum dns_record_source dns_source:8;
376 enum dns_lookup_status dns_status:8;
377 unsigned int dns_lookup_count;
378 unsigned int debug_id;
379
380
381 struct rb_root volumes;
382 struct hlist_head proc_volumes;
383 seqlock_t volume_lock;
384
385
386 struct rb_root fs_servers;
387 seqlock_t fs_lock;
388
389
390 rwlock_t vl_servers_lock;
391 struct afs_vlserver_list __rcu *vl_servers;
392
393 u8 name_len;
394 char *name;
395};
396
397
398
399
400struct afs_vlserver {
401 struct rcu_head rcu;
402 struct afs_addr_list __rcu *addresses;
403 unsigned long flags;
404#define AFS_VLSERVER_FL_PROBED 0
405#define AFS_VLSERVER_FL_PROBING 1
406#define AFS_VLSERVER_FL_IS_YFS 2
407#define AFS_VLSERVER_FL_RESPONDING 3
408 rwlock_t lock;
409 atomic_t usage;
410 unsigned int rtt;
411
412
413 wait_queue_head_t probe_wq;
414 atomic_t probe_outstanding;
415 spinlock_t probe_lock;
416 struct {
417 unsigned int rtt;
418 u32 abort_code;
419 short error;
420 unsigned short flags;
421#define AFS_VLSERVER_PROBE_RESPONDED 0x01
422#define AFS_VLSERVER_PROBE_IS_YFS 0x02
423#define AFS_VLSERVER_PROBE_NOT_YFS 0x04
424#define AFS_VLSERVER_PROBE_LOCAL_FAILURE 0x08
425 } probe;
426
427 u16 port;
428 u16 name_len;
429 char name[];
430};
431
432
433
434
435struct afs_vlserver_entry {
436 u16 priority;
437 u16 weight;
438 enum dns_record_source source:8;
439 enum dns_lookup_status status:8;
440 struct afs_vlserver *server;
441};
442
443struct afs_vlserver_list {
444 struct rcu_head rcu;
445 atomic_t usage;
446 u8 nr_servers;
447 u8 index;
448 u8 preferred;
449 enum dns_record_source source:8;
450 enum dns_lookup_status status:8;
451 rwlock_t lock;
452 struct afs_vlserver_entry servers[];
453};
454
455
456
457
458
459
460struct afs_vldb_entry {
461 afs_volid_t vid[3];
462
463 unsigned long flags;
464#define AFS_VLDB_HAS_RW 0
465#define AFS_VLDB_HAS_RO 1
466#define AFS_VLDB_HAS_BAK 2
467#define AFS_VLDB_QUERY_VALID 3
468#define AFS_VLDB_QUERY_ERROR 4
469
470 uuid_t fs_server[AFS_NMAXNSERVERS];
471 u32 addr_version[AFS_NMAXNSERVERS];
472 u8 fs_mask[AFS_NMAXNSERVERS];
473#define AFS_VOL_VTM_RW 0x01
474#define AFS_VOL_VTM_RO 0x02
475#define AFS_VOL_VTM_BAK 0x04
476 short error;
477 u8 nr_servers;
478 u8 name_len;
479 u8 name[AFS_MAXVOLNAME + 1];
480};
481
482
483
484
485struct afs_server {
486 struct rcu_head rcu;
487 union {
488 uuid_t uuid;
489 struct afs_uuid _uuid;
490 };
491
492 struct afs_addr_list __rcu *addresses;
493 struct afs_cell *cell;
494 struct rb_node uuid_rb;
495 struct afs_server __rcu *uuid_next;
496 struct afs_server *uuid_prev;
497 struct list_head probe_link;
498 struct hlist_node addr4_link;
499 struct hlist_node addr6_link;
500 struct hlist_node proc_link;
501 struct afs_server *gc_next;
502 time64_t unuse_time;
503 unsigned long flags;
504#define AFS_SERVER_FL_RESPONDING 0
505#define AFS_SERVER_FL_UPDATING 1
506#define AFS_SERVER_FL_NEEDS_UPDATE 2
507#define AFS_SERVER_FL_NOT_READY 4
508#define AFS_SERVER_FL_NOT_FOUND 5
509#define AFS_SERVER_FL_VL_FAIL 6
510#define AFS_SERVER_FL_MAY_HAVE_CB 8
511#define AFS_SERVER_FL_IS_YFS 16
512#define AFS_SERVER_FL_NO_IBULK 17
513#define AFS_SERVER_FL_NO_RM2 18
514 atomic_t ref;
515 atomic_t active;
516 u32 addr_version;
517 unsigned int rtt;
518 unsigned int debug_id;
519
520
521 rwlock_t fs_lock;
522
523
524 unsigned cb_s_break;
525
526
527 unsigned long probed_at;
528 wait_queue_head_t probe_wq;
529 atomic_t probe_outstanding;
530 spinlock_t probe_lock;
531 struct {
532 unsigned int rtt;
533 u32 abort_code;
534 short error;
535 bool responded:1;
536 bool is_yfs:1;
537 bool not_yfs:1;
538 bool local_failure:1;
539 } probe;
540};
541
542
543
544
545struct afs_server_entry {
546 struct afs_server *server;
547};
548
549struct afs_server_list {
550 afs_volid_t vids[AFS_MAXTYPES];
551 refcount_t usage;
552 unsigned char nr_servers;
553 unsigned char preferred;
554 unsigned short vnovol_mask;
555 unsigned int seq;
556 rwlock_t lock;
557 struct afs_server_entry servers[];
558};
559
560
561
562
563struct afs_volume {
564 union {
565 struct rcu_head rcu;
566 afs_volid_t vid;
567 };
568 atomic_t usage;
569 time64_t update_at;
570 struct afs_cell *cell;
571 struct rb_node cell_node;
572 struct hlist_node proc_link;
573 struct super_block __rcu *sb;
574 unsigned long flags;
575#define AFS_VOLUME_NEEDS_UPDATE 0
576#define AFS_VOLUME_UPDATING 1
577#define AFS_VOLUME_WAIT 2
578#define AFS_VOLUME_DELETED 3
579#define AFS_VOLUME_OFFLINE 4
580#define AFS_VOLUME_BUSY 5
581#define AFS_VOLUME_MAYBE_NO_IBULK 6
582#ifdef CONFIG_AFS_FSCACHE
583 struct fscache_cookie *cache;
584#endif
585 struct afs_server_list __rcu *servers;
586 rwlock_t servers_lock;
587 unsigned int servers_seq;
588
589 unsigned cb_v_break;
590 rwlock_t cb_v_break_lock;
591
592 afs_voltype_t type;
593 char type_force;
594 u8 name_len;
595 u8 name[AFS_MAXVOLNAME + 1];
596};
597
598enum afs_lock_state {
599 AFS_VNODE_LOCK_NONE,
600 AFS_VNODE_LOCK_WAITING_FOR_CB,
601 AFS_VNODE_LOCK_SETTING,
602 AFS_VNODE_LOCK_GRANTED,
603 AFS_VNODE_LOCK_EXTENDING,
604 AFS_VNODE_LOCK_NEED_UNLOCK,
605 AFS_VNODE_LOCK_UNLOCKING,
606 AFS_VNODE_LOCK_DELETED,
607};
608
609
610
611
612
613
614
615struct afs_vnode {
616 struct inode vfs_inode;
617
618 struct afs_volume *volume;
619 struct afs_fid fid;
620 struct afs_file_status status;
621 afs_dataversion_t invalid_before;
622#ifdef CONFIG_AFS_FSCACHE
623 struct fscache_cookie *cache;
624#endif
625 struct afs_permits __rcu *permit_cache;
626 struct mutex io_lock;
627 struct rw_semaphore validate_lock;
628 struct rw_semaphore rmdir_lock;
629 struct key *silly_key;
630 spinlock_t wb_lock;
631 spinlock_t lock;
632 unsigned long flags;
633#define AFS_VNODE_CB_PROMISED 0
634#define AFS_VNODE_UNSET 1
635#define AFS_VNODE_DIR_VALID 2
636#define AFS_VNODE_ZAP_DATA 3
637#define AFS_VNODE_DELETED 4
638#define AFS_VNODE_MOUNTPOINT 5
639#define AFS_VNODE_AUTOCELL 6
640#define AFS_VNODE_PSEUDODIR 7
641#define AFS_VNODE_NEW_CONTENT 8
642#define AFS_VNODE_SILLY_DELETED 9
643
644 struct list_head wb_keys;
645 struct list_head pending_locks;
646 struct list_head granted_locks;
647 struct delayed_work lock_work;
648 struct key *lock_key;
649 ktime_t locked_at;
650 enum afs_lock_state lock_state : 8;
651 afs_lock_type_t lock_type : 8;
652
653
654 void *cb_server;
655 unsigned int cb_s_break;
656 unsigned int cb_v_break;
657 unsigned int cb_break;
658 seqlock_t cb_lock;
659
660 time64_t cb_expires_at;
661};
662
663static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode)
664{
665#ifdef CONFIG_AFS_FSCACHE
666 return vnode->cache;
667#else
668 return NULL;
669#endif
670}
671
672
673
674
675struct afs_permit {
676 struct key *key;
677 afs_access_t access;
678};
679
680
681
682
683
684struct afs_permits {
685 struct rcu_head rcu;
686 struct hlist_node hash_node;
687 unsigned long h;
688 refcount_t usage;
689 unsigned short nr_permits;
690 bool invalidated;
691 struct afs_permit permits[];
692};
693
694
695
696
697struct afs_error {
698 short error;
699 bool responded;
700};
701
702
703
704
705struct afs_addr_cursor {
706 struct afs_addr_list *alist;
707 unsigned long tried;
708 signed char index;
709 bool responded;
710 unsigned short nr_iterations;
711 short error;
712 u32 abort_code;
713};
714
715
716
717
718struct afs_vl_cursor {
719 struct afs_addr_cursor ac;
720 struct afs_cell *cell;
721 struct afs_vlserver_list *server_list;
722 struct afs_vlserver *server;
723 struct key *key;
724 unsigned long untried;
725 short index;
726 short error;
727 unsigned short flags;
728#define AFS_VL_CURSOR_STOP 0x0001
729#define AFS_VL_CURSOR_RETRY 0x0002
730#define AFS_VL_CURSOR_RETRIED 0x0004
731 unsigned short nr_iterations;
732};
733
734
735
736
737struct afs_operation_ops {
738 void (*issue_afs_rpc)(struct afs_operation *op);
739 void (*issue_yfs_rpc)(struct afs_operation *op);
740 void (*success)(struct afs_operation *op);
741 void (*aborted)(struct afs_operation *op);
742 void (*edit_dir)(struct afs_operation *op);
743 void (*put)(struct afs_operation *op);
744};
745
746struct afs_vnode_param {
747 struct afs_vnode *vnode;
748 struct afs_fid fid;
749 struct afs_status_cb scb;
750 afs_dataversion_t dv_before;
751 unsigned int cb_break_before;
752 u8 dv_delta;
753 bool put_vnode:1;
754 bool need_io_lock:1;
755 bool update_ctime:1;
756 bool set_size:1;
757 bool op_unlinked:1;
758 bool speculative:1;
759};
760
761
762
763
764
765struct afs_operation {
766 struct afs_net *net;
767 struct key *key;
768 const struct afs_call_type *type;
769 const struct afs_operation_ops *ops;
770
771
772 struct afs_volume *volume;
773 struct afs_vnode_param file[2];
774 struct afs_vnode_param *more_files;
775 struct afs_volsync volsync;
776 struct dentry *dentry;
777 struct dentry *dentry_2;
778 struct timespec64 mtime;
779 struct timespec64 ctime;
780 short nr_files;
781 short error;
782 unsigned int debug_id;
783
784 unsigned int cb_v_break;
785 unsigned int cb_s_break;
786
787 union {
788 struct {
789 int which;
790 } fetch_status;
791 struct {
792 int reason;
793 mode_t mode;
794 const char *symlink;
795 } create;
796 struct {
797 bool need_rehash;
798 } unlink;
799 struct {
800 struct dentry *rehash;
801 struct dentry *tmp;
802 bool new_negative;
803 } rename;
804 struct {
805 struct afs_read *req;
806 } fetch;
807 struct {
808 afs_lock_type_t type;
809 } lock;
810 struct {
811 struct address_space *mapping;
812 pgoff_t first;
813 pgoff_t last;
814 unsigned first_offset;
815 unsigned last_to;
816 bool laundering;
817 } store;
818 struct {
819 struct iattr *attr;
820 loff_t old_i_size;
821 } setattr;
822 struct afs_acl *acl;
823 struct yfs_acl *yacl;
824 struct {
825 struct afs_volume_status vs;
826 struct kstatfs *buf;
827 } volstatus;
828 };
829
830
831 struct afs_addr_cursor ac;
832 struct afs_server_list *server_list;
833 struct afs_server *server;
834 struct afs_call *call;
835 unsigned long untried;
836 short index;
837 unsigned short nr_iterations;
838
839 unsigned int flags;
840#define AFS_OPERATION_STOP 0x0001
841#define AFS_OPERATION_VBUSY 0x0002
842#define AFS_OPERATION_VMOVED 0x0004
843#define AFS_OPERATION_VNOVOL 0x0008
844#define AFS_OPERATION_CUR_ONLY 0x0010
845#define AFS_OPERATION_NO_VSLEEP 0x0020
846#define AFS_OPERATION_UNINTR 0x0040
847#define AFS_OPERATION_DOWNGRADE 0x0080
848#define AFS_OPERATION_LOCK_0 0x0100
849#define AFS_OPERATION_LOCK_1 0x0200
850#define AFS_OPERATION_TRIED_ALL 0x0400
851#define AFS_OPERATION_RETRY_SERVER 0x0800
852#define AFS_OPERATION_DIR_CONFLICT 0x1000
853};
854
855
856
857
858struct afs_vnode_cache_aux {
859 u64 data_version;
860} __packed;
861
862
863
864
865
866
867
868#ifdef CONFIG_64BIT
869#define __AFS_PAGE_PRIV_MASK 0x7fffffffUL
870#define __AFS_PAGE_PRIV_SHIFT 32
871#define __AFS_PAGE_PRIV_MMAPPED 0x80000000UL
872#else
873#define __AFS_PAGE_PRIV_MASK 0x7fffUL
874#define __AFS_PAGE_PRIV_SHIFT 16
875#define __AFS_PAGE_PRIV_MMAPPED 0x8000UL
876#endif
877
878static inline unsigned int afs_page_dirty_resolution(void)
879{
880 int shift = PAGE_SHIFT - (__AFS_PAGE_PRIV_SHIFT - 1);
881 return (shift > 0) ? shift : 0;
882}
883
884static inline size_t afs_page_dirty_from(unsigned long priv)
885{
886 unsigned long x = priv & __AFS_PAGE_PRIV_MASK;
887
888
889 return x << afs_page_dirty_resolution();
890}
891
892static inline size_t afs_page_dirty_to(unsigned long priv)
893{
894 unsigned long x = (priv >> __AFS_PAGE_PRIV_SHIFT) & __AFS_PAGE_PRIV_MASK;
895
896
897 return (x + 1) << afs_page_dirty_resolution();
898}
899
900static inline unsigned long afs_page_dirty(size_t from, size_t to)
901{
902 unsigned int res = afs_page_dirty_resolution();
903 from >>= res;
904 to = (to - 1) >> res;
905 return (to << __AFS_PAGE_PRIV_SHIFT) | from;
906}
907
908static inline unsigned long afs_page_dirty_mmapped(unsigned long priv)
909{
910 return priv | __AFS_PAGE_PRIV_MMAPPED;
911}
912
913static inline bool afs_is_page_dirty_mmapped(unsigned long priv)
914{
915 return priv & __AFS_PAGE_PRIV_MMAPPED;
916}
917
918#include <trace/events/afs.h>
919
920
921
922
923
924static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist)
925{
926 if (alist)
927 refcount_inc(&alist->usage);
928 return alist;
929}
930extern struct afs_addr_list *afs_alloc_addrlist(unsigned int,
931 unsigned short,
932 unsigned short);
933extern void afs_put_addrlist(struct afs_addr_list *);
934extern struct afs_vlserver_list *afs_parse_text_addrs(struct afs_net *,
935 const char *, size_t, char,
936 unsigned short, unsigned short);
937extern struct afs_vlserver_list *afs_dns_query(struct afs_cell *, time64_t *);
938extern bool afs_iterate_addresses(struct afs_addr_cursor *);
939extern int afs_end_cursor(struct afs_addr_cursor *);
940
941extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16);
942extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16);
943
944
945
946
947#ifdef CONFIG_AFS_FSCACHE
948extern struct fscache_netfs afs_cache_netfs;
949extern struct fscache_cookie_def afs_cell_cache_index_def;
950extern struct fscache_cookie_def afs_volume_cache_index_def;
951extern struct fscache_cookie_def afs_vnode_cache_index_def;
952#else
953#define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL)
954#define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL)
955#define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL)
956#endif
957
958
959
960
961extern void afs_init_callback_state(struct afs_server *);
962extern void __afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason);
963extern void afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason);
964extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break *);
965
966static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode)
967{
968 return vnode->cb_break + vnode->cb_v_break;
969}
970
971static inline bool afs_cb_is_broken(unsigned int cb_break,
972 const struct afs_vnode *vnode)
973{
974 return cb_break != (vnode->cb_break + vnode->volume->cb_v_break);
975}
976
977
978
979
980extern int afs_cell_init(struct afs_net *, const char *);
981extern struct afs_cell *afs_find_cell(struct afs_net *, const char *, unsigned,
982 enum afs_cell_trace);
983extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned,
984 const char *, bool);
985extern struct afs_cell *afs_use_cell(struct afs_cell *, enum afs_cell_trace);
986extern void afs_unuse_cell(struct afs_net *, struct afs_cell *, enum afs_cell_trace);
987extern struct afs_cell *afs_get_cell(struct afs_cell *, enum afs_cell_trace);
988extern void afs_see_cell(struct afs_cell *, enum afs_cell_trace);
989extern void afs_put_cell(struct afs_cell *, enum afs_cell_trace);
990extern void afs_queue_cell(struct afs_cell *, enum afs_cell_trace);
991extern void afs_manage_cells(struct work_struct *);
992extern void afs_cells_timer(struct timer_list *);
993extern void __net_exit afs_cell_purge(struct afs_net *);
994
995
996
997
998extern bool afs_cm_incoming_call(struct afs_call *);
999
1000
1001
1002
1003extern const struct file_operations afs_dir_file_operations;
1004extern const struct inode_operations afs_dir_inode_operations;
1005extern const struct address_space_operations afs_dir_aops;
1006extern const struct dentry_operations afs_fs_dentry_operations;
1007
1008extern void afs_d_release(struct dentry *);
1009extern void afs_check_for_remote_deletion(struct afs_operation *);
1010
1011
1012
1013
1014extern void afs_edit_dir_add(struct afs_vnode *, struct qstr *, struct afs_fid *,
1015 enum afs_edit_dir_reason);
1016extern void afs_edit_dir_remove(struct afs_vnode *, struct qstr *, enum afs_edit_dir_reason);
1017
1018
1019
1020
1021extern int afs_sillyrename(struct afs_vnode *, struct afs_vnode *,
1022 struct dentry *, struct key *);
1023extern int afs_silly_iput(struct dentry *, struct inode *);
1024
1025
1026
1027
1028extern const struct inode_operations afs_dynroot_inode_operations;
1029extern const struct dentry_operations afs_dynroot_dentry_operations;
1030
1031extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *);
1032extern int afs_dynroot_mkdir(struct afs_net *, struct afs_cell *);
1033extern void afs_dynroot_rmdir(struct afs_net *, struct afs_cell *);
1034extern int afs_dynroot_populate(struct super_block *);
1035extern void afs_dynroot_depopulate(struct super_block *);
1036
1037
1038
1039
1040extern const struct address_space_operations afs_fs_aops;
1041extern const struct inode_operations afs_file_inode_operations;
1042extern const struct file_operations afs_file_operations;
1043
1044extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *);
1045extern void afs_put_wb_key(struct afs_wb_key *);
1046extern int afs_open(struct inode *, struct file *);
1047extern int afs_release(struct inode *, struct file *);
1048extern int afs_fetch_data(struct afs_vnode *, struct key *, struct afs_read *);
1049extern int afs_page_filler(void *, struct page *);
1050extern void afs_put_read(struct afs_read *);
1051
1052static inline struct afs_read *afs_get_read(struct afs_read *req)
1053{
1054 refcount_inc(&req->usage);
1055 return req;
1056}
1057
1058
1059
1060
1061extern struct workqueue_struct *afs_lock_manager;
1062
1063extern void afs_lock_op_done(struct afs_call *);
1064extern void afs_lock_work(struct work_struct *);
1065extern void afs_lock_may_be_available(struct afs_vnode *);
1066extern int afs_lock(struct file *, int, struct file_lock *);
1067extern int afs_flock(struct file *, int, struct file_lock *);
1068
1069
1070
1071
1072extern void afs_fs_fetch_status(struct afs_operation *);
1073extern void afs_fs_fetch_data(struct afs_operation *);
1074extern void afs_fs_create_file(struct afs_operation *);
1075extern void afs_fs_make_dir(struct afs_operation *);
1076extern void afs_fs_remove_file(struct afs_operation *);
1077extern void afs_fs_remove_dir(struct afs_operation *);
1078extern void afs_fs_link(struct afs_operation *);
1079extern void afs_fs_symlink(struct afs_operation *);
1080extern void afs_fs_rename(struct afs_operation *);
1081extern void afs_fs_store_data(struct afs_operation *);
1082extern void afs_fs_setattr(struct afs_operation *);
1083extern void afs_fs_get_volume_status(struct afs_operation *);
1084extern void afs_fs_set_lock(struct afs_operation *);
1085extern void afs_fs_extend_lock(struct afs_operation *);
1086extern void afs_fs_release_lock(struct afs_operation *);
1087extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *,
1088 struct afs_addr_cursor *, struct key *);
1089extern bool afs_fs_get_capabilities(struct afs_net *, struct afs_server *,
1090 struct afs_addr_cursor *, struct key *);
1091extern void afs_fs_inline_bulk_status(struct afs_operation *);
1092
1093struct afs_acl {
1094 u32 size;
1095 u8 data[];
1096};
1097
1098extern void afs_fs_fetch_acl(struct afs_operation *);
1099extern void afs_fs_store_acl(struct afs_operation *);
1100
1101
1102
1103
1104extern struct afs_operation *afs_alloc_operation(struct key *, struct afs_volume *);
1105extern int afs_put_operation(struct afs_operation *);
1106extern bool afs_begin_vnode_operation(struct afs_operation *);
1107extern void afs_wait_for_operation(struct afs_operation *);
1108extern int afs_do_sync_operation(struct afs_operation *);
1109
1110static inline void afs_op_nomem(struct afs_operation *op)
1111{
1112 op->error = -ENOMEM;
1113}
1114
1115static inline void afs_op_set_vnode(struct afs_operation *op, unsigned int n,
1116 struct afs_vnode *vnode)
1117{
1118 op->file[n].vnode = vnode;
1119 op->file[n].need_io_lock = true;
1120}
1121
1122static inline void afs_op_set_fid(struct afs_operation *op, unsigned int n,
1123 const struct afs_fid *fid)
1124{
1125 op->file[n].fid = *fid;
1126}
1127
1128
1129
1130
1131extern void afs_fileserver_probe_result(struct afs_call *);
1132extern void afs_fs_probe_fileserver(struct afs_net *, struct afs_server *, struct key *, bool);
1133extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long);
1134extern void afs_probe_fileserver(struct afs_net *, struct afs_server *);
1135extern void afs_fs_probe_dispatcher(struct work_struct *);
1136extern int afs_wait_for_one_fs_probe(struct afs_server *, bool);
1137extern void afs_fs_probe_cleanup(struct afs_net *);
1138
1139
1140
1141
1142extern const struct afs_operation_ops afs_fetch_status_operation;
1143
1144extern void afs_vnode_commit_status(struct afs_operation *, struct afs_vnode_param *);
1145extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *);
1146extern int afs_ilookup5_test_by_fid(struct inode *, void *);
1147extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool);
1148extern struct inode *afs_iget(struct afs_operation *, struct afs_vnode_param *);
1149extern struct inode *afs_root_iget(struct super_block *, struct key *);
1150extern bool afs_check_validity(struct afs_vnode *);
1151extern int afs_validate(struct afs_vnode *, struct key *);
1152extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int);
1153extern int afs_setattr(struct dentry *, struct iattr *);
1154extern void afs_evict_inode(struct inode *);
1155extern int afs_drop_inode(struct inode *);
1156
1157
1158
1159
1160extern struct workqueue_struct *afs_wq;
1161extern int afs_net_id;
1162
1163static inline struct afs_net *afs_net(struct net *net)
1164{
1165 return net_generic(net, afs_net_id);
1166}
1167
1168static inline struct afs_net *afs_sb2net(struct super_block *sb)
1169{
1170 return afs_net(AFS_FS_S(sb)->net_ns);
1171}
1172
1173static inline struct afs_net *afs_d2net(struct dentry *dentry)
1174{
1175 return afs_sb2net(dentry->d_sb);
1176}
1177
1178static inline struct afs_net *afs_i2net(struct inode *inode)
1179{
1180 return afs_sb2net(inode->i_sb);
1181}
1182
1183static inline struct afs_net *afs_v2net(struct afs_vnode *vnode)
1184{
1185 return afs_i2net(&vnode->vfs_inode);
1186}
1187
1188static inline struct afs_net *afs_sock2net(struct sock *sk)
1189{
1190 return net_generic(sock_net(sk), afs_net_id);
1191}
1192
1193static inline void __afs_stat(atomic_t *s)
1194{
1195 atomic_inc(s);
1196}
1197
1198#define afs_stat_v(vnode, n) __afs_stat(&afs_v2net(vnode)->n)
1199
1200
1201
1202
1203extern int afs_abort_to_error(u32);
1204extern void afs_prioritise_error(struct afs_error *, int, u32);
1205
1206
1207
1208
1209extern const struct inode_operations afs_mntpt_inode_operations;
1210extern const struct inode_operations afs_autocell_inode_operations;
1211extern const struct file_operations afs_mntpt_file_operations;
1212
1213extern struct vfsmount *afs_d_automount(struct path *);
1214extern void afs_mntpt_kill_timer(void);
1215
1216
1217
1218
1219#ifdef CONFIG_PROC_FS
1220extern int __net_init afs_proc_init(struct afs_net *);
1221extern void __net_exit afs_proc_cleanup(struct afs_net *);
1222extern int afs_proc_cell_setup(struct afs_cell *);
1223extern void afs_proc_cell_remove(struct afs_cell *);
1224extern void afs_put_sysnames(struct afs_sysnames *);
1225#else
1226static inline int afs_proc_init(struct afs_net *net) { return 0; }
1227static inline void afs_proc_cleanup(struct afs_net *net) {}
1228static inline int afs_proc_cell_setup(struct afs_cell *cell) { return 0; }
1229static inline void afs_proc_cell_remove(struct afs_cell *cell) {}
1230static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {}
1231#endif
1232
1233
1234
1235
1236extern bool afs_select_fileserver(struct afs_operation *);
1237extern void afs_dump_edestaddrreq(const struct afs_operation *);
1238
1239
1240
1241
1242extern struct workqueue_struct *afs_async_calls;
1243
1244extern int __net_init afs_open_socket(struct afs_net *);
1245extern void __net_exit afs_close_socket(struct afs_net *);
1246extern void afs_charge_preallocation(struct work_struct *);
1247extern void afs_put_call(struct afs_call *);
1248extern void afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t);
1249extern long afs_wait_for_call_to_complete(struct afs_call *, struct afs_addr_cursor *);
1250extern struct afs_call *afs_alloc_flat_call(struct afs_net *,
1251 const struct afs_call_type *,
1252 size_t, size_t);
1253extern void afs_flat_call_destructor(struct afs_call *);
1254extern void afs_send_empty_reply(struct afs_call *);
1255extern void afs_send_simple_reply(struct afs_call *, const void *, size_t);
1256extern int afs_extract_data(struct afs_call *, bool);
1257extern int afs_protocol_error(struct afs_call *, enum afs_eproto_cause);
1258
1259static inline void afs_make_op_call(struct afs_operation *op, struct afs_call *call,
1260 gfp_t gfp)
1261{
1262 op->call = call;
1263 op->type = call->type;
1264 call->op = op;
1265 call->key = op->key;
1266 call->intr = !(op->flags & AFS_OPERATION_UNINTR);
1267 afs_make_call(&op->ac, call, gfp);
1268}
1269
1270static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size)
1271{
1272 call->kvec[0].iov_base = buf;
1273 call->kvec[0].iov_len = size;
1274 iov_iter_kvec(&call->def_iter, READ, call->kvec, 1, size);
1275}
1276
1277static inline void afs_extract_to_tmp(struct afs_call *call)
1278{
1279 afs_extract_begin(call, &call->tmp, sizeof(call->tmp));
1280}
1281
1282static inline void afs_extract_to_tmp64(struct afs_call *call)
1283{
1284 afs_extract_begin(call, &call->tmp64, sizeof(call->tmp64));
1285}
1286
1287static inline void afs_extract_discard(struct afs_call *call, size_t size)
1288{
1289 iov_iter_discard(&call->def_iter, READ, size);
1290}
1291
1292static inline void afs_extract_to_buf(struct afs_call *call, size_t size)
1293{
1294 afs_extract_begin(call, call->buffer, size);
1295}
1296
1297static inline int afs_transfer_reply(struct afs_call *call)
1298{
1299 return afs_extract_data(call, false);
1300}
1301
1302static inline bool afs_check_call_state(struct afs_call *call,
1303 enum afs_call_state state)
1304{
1305 return READ_ONCE(call->state) == state;
1306}
1307
1308static inline bool afs_set_call_state(struct afs_call *call,
1309 enum afs_call_state from,
1310 enum afs_call_state to)
1311{
1312 bool ok = false;
1313
1314 spin_lock_bh(&call->state_lock);
1315 if (call->state == from) {
1316 call->state = to;
1317 trace_afs_call_state(call, from, to, 0, 0);
1318 ok = true;
1319 }
1320 spin_unlock_bh(&call->state_lock);
1321 return ok;
1322}
1323
1324static inline void afs_set_call_complete(struct afs_call *call,
1325 int error, u32 remote_abort)
1326{
1327 enum afs_call_state state;
1328 bool ok = false;
1329
1330 spin_lock_bh(&call->state_lock);
1331 state = call->state;
1332 if (state != AFS_CALL_COMPLETE) {
1333 call->abort_code = remote_abort;
1334 call->error = error;
1335 call->state = AFS_CALL_COMPLETE;
1336 trace_afs_call_state(call, state, AFS_CALL_COMPLETE,
1337 error, remote_abort);
1338 ok = true;
1339 }
1340 spin_unlock_bh(&call->state_lock);
1341 if (ok) {
1342 trace_afs_call_done(call);
1343
1344
1345
1346
1347
1348 if (call->drop_ref)
1349 afs_put_call(call);
1350 }
1351}
1352
1353
1354
1355
1356extern void afs_put_permits(struct afs_permits *);
1357extern void afs_clear_permits(struct afs_vnode *);
1358extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int,
1359 struct afs_status_cb *);
1360extern void afs_zap_permits(struct rcu_head *);
1361extern struct key *afs_request_key(struct afs_cell *);
1362extern struct key *afs_request_key_rcu(struct afs_cell *);
1363extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *);
1364extern int afs_permission(struct inode *, int);
1365extern void __exit afs_clean_up_permit_cache(void);
1366
1367
1368
1369
1370extern spinlock_t afs_server_peer_lock;
1371
1372extern struct afs_server *afs_find_server(struct afs_net *,
1373 const struct sockaddr_rxrpc *);
1374extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *);
1375extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *, u32);
1376extern struct afs_server *afs_get_server(struct afs_server *, enum afs_server_trace);
1377extern struct afs_server *afs_use_server(struct afs_server *, enum afs_server_trace);
1378extern void afs_unuse_server(struct afs_net *, struct afs_server *, enum afs_server_trace);
1379extern void afs_unuse_server_notime(struct afs_net *, struct afs_server *, enum afs_server_trace);
1380extern void afs_put_server(struct afs_net *, struct afs_server *, enum afs_server_trace);
1381extern void afs_manage_servers(struct work_struct *);
1382extern void afs_servers_timer(struct timer_list *);
1383extern void afs_fs_probe_timer(struct timer_list *);
1384extern void __net_exit afs_purge_servers(struct afs_net *);
1385extern bool afs_check_server_record(struct afs_operation *, struct afs_server *);
1386
1387static inline void afs_inc_servers_outstanding(struct afs_net *net)
1388{
1389 atomic_inc(&net->servers_outstanding);
1390}
1391
1392static inline void afs_dec_servers_outstanding(struct afs_net *net)
1393{
1394 if (atomic_dec_and_test(&net->servers_outstanding))
1395 wake_up_var(&net->servers_outstanding);
1396}
1397
1398static inline bool afs_is_probing_server(struct afs_server *server)
1399{
1400 return list_empty(&server->probe_link);
1401}
1402
1403
1404
1405
1406static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist)
1407{
1408 refcount_inc(&slist->usage);
1409 return slist;
1410}
1411
1412extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *);
1413extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *,
1414 struct afs_vldb_entry *,
1415 u8);
1416extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *);
1417
1418
1419
1420
1421extern int __init afs_fs_init(void);
1422extern void afs_fs_exit(void);
1423
1424
1425
1426
1427extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *,
1428 const char *, int);
1429extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *, const uuid_t *);
1430extern struct afs_call *afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *,
1431 struct key *, struct afs_vlserver *, unsigned int);
1432extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *, const uuid_t *);
1433extern char *afs_yfsvl_get_cell_name(struct afs_vl_cursor *);
1434
1435
1436
1437
1438extern int afs_cell_detect_alias(struct afs_cell *, struct key *);
1439
1440
1441
1442
1443extern void afs_vlserver_probe_result(struct afs_call *);
1444extern int afs_send_vl_probes(struct afs_net *, struct key *, struct afs_vlserver_list *);
1445extern int afs_wait_for_vl_probes(struct afs_vlserver_list *, unsigned long);
1446
1447
1448
1449
1450extern bool afs_begin_vlserver_operation(struct afs_vl_cursor *,
1451 struct afs_cell *, struct key *);
1452extern bool afs_select_vlserver(struct afs_vl_cursor *);
1453extern bool afs_select_current_vlserver(struct afs_vl_cursor *);
1454extern int afs_end_vlserver_operation(struct afs_vl_cursor *);
1455
1456
1457
1458
1459static inline struct afs_vlserver *afs_get_vlserver(struct afs_vlserver *vlserver)
1460{
1461 atomic_inc(&vlserver->usage);
1462 return vlserver;
1463}
1464
1465static inline struct afs_vlserver_list *afs_get_vlserverlist(struct afs_vlserver_list *vllist)
1466{
1467 if (vllist)
1468 atomic_inc(&vllist->usage);
1469 return vllist;
1470}
1471
1472extern struct afs_vlserver *afs_alloc_vlserver(const char *, size_t, unsigned short);
1473extern void afs_put_vlserver(struct afs_net *, struct afs_vlserver *);
1474extern struct afs_vlserver_list *afs_alloc_vlserver_list(unsigned int);
1475extern void afs_put_vlserverlist(struct afs_net *, struct afs_vlserver_list *);
1476extern struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *,
1477 const void *, size_t);
1478
1479
1480
1481
1482extern struct afs_volume *afs_create_volume(struct afs_fs_context *);
1483extern void afs_activate_volume(struct afs_volume *);
1484extern void afs_deactivate_volume(struct afs_volume *);
1485extern struct afs_volume *afs_get_volume(struct afs_volume *, enum afs_volume_trace);
1486extern void afs_put_volume(struct afs_net *, struct afs_volume *, enum afs_volume_trace);
1487extern int afs_check_volume_status(struct afs_volume *, struct afs_operation *);
1488
1489
1490
1491
1492extern int afs_set_page_dirty(struct page *);
1493extern int afs_write_begin(struct file *file, struct address_space *mapping,
1494 loff_t pos, unsigned len, unsigned flags,
1495 struct page **pagep, void **fsdata);
1496extern int afs_write_end(struct file *file, struct address_space *mapping,
1497 loff_t pos, unsigned len, unsigned copied,
1498 struct page *page, void *fsdata);
1499extern int afs_writepage(struct page *, struct writeback_control *);
1500extern int afs_writepages(struct address_space *, struct writeback_control *);
1501extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *);
1502extern int afs_fsync(struct file *, loff_t, loff_t, int);
1503extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf);
1504extern void afs_prune_wb_keys(struct afs_vnode *);
1505extern int afs_launder_page(struct page *);
1506
1507
1508
1509
1510extern const struct xattr_handler *afs_xattr_handlers[];
1511extern ssize_t afs_listxattr(struct dentry *, char *, size_t);
1512
1513
1514
1515
1516extern void yfs_fs_fetch_data(struct afs_operation *);
1517extern void yfs_fs_create_file(struct afs_operation *);
1518extern void yfs_fs_make_dir(struct afs_operation *);
1519extern void yfs_fs_remove_file2(struct afs_operation *);
1520extern void yfs_fs_remove_file(struct afs_operation *);
1521extern void yfs_fs_remove_dir(struct afs_operation *);
1522extern void yfs_fs_link(struct afs_operation *);
1523extern void yfs_fs_symlink(struct afs_operation *);
1524extern void yfs_fs_rename(struct afs_operation *);
1525extern void yfs_fs_store_data(struct afs_operation *);
1526extern void yfs_fs_setattr(struct afs_operation *);
1527extern void yfs_fs_get_volume_status(struct afs_operation *);
1528extern void yfs_fs_set_lock(struct afs_operation *);
1529extern void yfs_fs_extend_lock(struct afs_operation *);
1530extern void yfs_fs_release_lock(struct afs_operation *);
1531extern void yfs_fs_fetch_status(struct afs_operation *);
1532extern void yfs_fs_inline_bulk_status(struct afs_operation *);
1533
1534struct yfs_acl {
1535 struct afs_acl *acl;
1536 struct afs_acl *vol_acl;
1537 u32 inherit_flag;
1538 u32 num_cleaned;
1539 unsigned int flags;
1540#define YFS_ACL_WANT_ACL 0x01
1541#define YFS_ACL_WANT_VOL_ACL 0x02
1542};
1543
1544extern void yfs_free_opaque_acl(struct yfs_acl *);
1545extern void yfs_fs_fetch_opaque_acl(struct afs_operation *);
1546extern void yfs_fs_store_opaque_acl2(struct afs_operation *);
1547
1548
1549
1550
1551static inline struct afs_vnode *AFS_FS_I(struct inode *inode)
1552{
1553 return container_of(inode, struct afs_vnode, vfs_inode);
1554}
1555
1556static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode)
1557{
1558 return &vnode->vfs_inode;
1559}
1560
1561
1562
1563
1564
1565
1566static inline void afs_update_dentry_version(struct afs_operation *op,
1567 struct afs_vnode_param *dir_vp,
1568 struct dentry *dentry)
1569{
1570 if (!op->error)
1571 dentry->d_fsdata =
1572 (void *)(unsigned long)dir_vp->scb.status.data_version;
1573}
1574
1575
1576
1577
1578
1579
1580static inline void afs_check_dir_conflict(struct afs_operation *op,
1581 struct afs_vnode_param *dvp)
1582{
1583 if (dvp->dv_before + dvp->dv_delta != dvp->scb.status.data_version)
1584 op->flags |= AFS_OPERATION_DIR_CONFLICT;
1585}
1586
1587static inline int afs_io_error(struct afs_call *call, enum afs_io_error where)
1588{
1589 trace_afs_io_error(call->debug_id, -EIO, where);
1590 return -EIO;
1591}
1592
1593static inline int afs_bad(struct afs_vnode *vnode, enum afs_file_error where)
1594{
1595 trace_afs_file_error(vnode, -EIO, where);
1596 return -EIO;
1597}
1598
1599
1600
1601
1602
1603extern unsigned afs_debug;
1604
1605#define dbgprintk(FMT,...) \
1606 printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__)
1607
1608#define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
1609#define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
1610#define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__)
1611
1612
1613#if defined(__KDEBUG)
1614#define _enter(FMT,...) kenter(FMT,##__VA_ARGS__)
1615#define _leave(FMT,...) kleave(FMT,##__VA_ARGS__)
1616#define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__)
1617
1618#elif defined(CONFIG_AFS_DEBUG)
1619#define AFS_DEBUG_KENTER 0x01
1620#define AFS_DEBUG_KLEAVE 0x02
1621#define AFS_DEBUG_KDEBUG 0x04
1622
1623#define _enter(FMT,...) \
1624do { \
1625 if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \
1626 kenter(FMT,##__VA_ARGS__); \
1627} while (0)
1628
1629#define _leave(FMT,...) \
1630do { \
1631 if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \
1632 kleave(FMT,##__VA_ARGS__); \
1633} while (0)
1634
1635#define _debug(FMT,...) \
1636do { \
1637 if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \
1638 kdebug(FMT,##__VA_ARGS__); \
1639} while (0)
1640
1641#else
1642#define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
1643#define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
1644#define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__)
1645#endif
1646
1647
1648
1649
1650#if 1
1651
1652#define ASSERT(X) \
1653do { \
1654 if (unlikely(!(X))) { \
1655 printk(KERN_ERR "\n"); \
1656 printk(KERN_ERR "AFS: Assertion failed\n"); \
1657 BUG(); \
1658 } \
1659} while(0)
1660
1661#define ASSERTCMP(X, OP, Y) \
1662do { \
1663 if (unlikely(!((X) OP (Y)))) { \
1664 printk(KERN_ERR "\n"); \
1665 printk(KERN_ERR "AFS: Assertion failed\n"); \
1666 printk(KERN_ERR "%lu " #OP " %lu is false\n", \
1667 (unsigned long)(X), (unsigned long)(Y)); \
1668 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
1669 (unsigned long)(X), (unsigned long)(Y)); \
1670 BUG(); \
1671 } \
1672} while(0)
1673
1674#define ASSERTRANGE(L, OP1, N, OP2, H) \
1675do { \
1676 if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \
1677 printk(KERN_ERR "\n"); \
1678 printk(KERN_ERR "AFS: Assertion failed\n"); \
1679 printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \
1680 (unsigned long)(L), (unsigned long)(N), \
1681 (unsigned long)(H)); \
1682 printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \
1683 (unsigned long)(L), (unsigned long)(N), \
1684 (unsigned long)(H)); \
1685 BUG(); \
1686 } \
1687} while(0)
1688
1689#define ASSERTIF(C, X) \
1690do { \
1691 if (unlikely((C) && !(X))) { \
1692 printk(KERN_ERR "\n"); \
1693 printk(KERN_ERR "AFS: Assertion failed\n"); \
1694 BUG(); \
1695 } \
1696} while(0)
1697
1698#define ASSERTIFCMP(C, X, OP, Y) \
1699do { \
1700 if (unlikely((C) && !((X) OP (Y)))) { \
1701 printk(KERN_ERR "\n"); \
1702 printk(KERN_ERR "AFS: Assertion failed\n"); \
1703 printk(KERN_ERR "%lu " #OP " %lu is false\n", \
1704 (unsigned long)(X), (unsigned long)(Y)); \
1705 printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \
1706 (unsigned long)(X), (unsigned long)(Y)); \
1707 BUG(); \
1708 } \
1709} while(0)
1710
1711#else
1712
1713#define ASSERT(X) \
1714do { \
1715} while(0)
1716
1717#define ASSERTCMP(X, OP, Y) \
1718do { \
1719} while(0)
1720
1721#define ASSERTRANGE(L, OP1, N, OP2, H) \
1722do { \
1723} while(0)
1724
1725#define ASSERTIF(C, X) \
1726do { \
1727} while(0)
1728
1729#define ASSERTIFCMP(C, X, OP, Y) \
1730do { \
1731} while(0)
1732
1733#endif
1734