Commit | Line | Data |
---|---|---|
2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
ec26815a | 2 | /* internal AFS stuff |
1da177e4 | 3 | * |
08e0e7c8 | 4 | * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. |
1da177e4 | 5 | * Written by David Howells (dhowells@redhat.com) |
1da177e4 LT |
6 | */ |
7 | ||
1da177e4 LT |
8 | #include <linux/compiler.h> |
9 | #include <linux/kernel.h> | |
8a79790b | 10 | #include <linux/ktime.h> |
1da177e4 LT |
11 | #include <linux/fs.h> |
12 | #include <linux/pagemap.h> | |
08e0e7c8 | 13 | #include <linux/rxrpc.h> |
00d3b7a4 | 14 | #include <linux/key.h> |
e8edc6e0 | 15 | #include <linux/workqueue.h> |
00c541ea | 16 | #include <linux/sched.h> |
80e50be4 | 17 | #include <linux/fscache.h> |
e1da0222 | 18 | #include <linux/backing-dev.h> |
ff548773 | 19 | #include <linux/uuid.h> |
0722f186 | 20 | #include <linux/mm_types.h> |
0a5143f2 | 21 | #include <linux/dns_resolver.h> |
f044c884 | 22 | #include <net/net_namespace.h> |
5b86d4ff DH |
23 | #include <net/netns/generic.h> |
24 | #include <net/sock.h> | |
8324f0bc | 25 | #include <net/af_rxrpc.h> |
00c541ea | 26 | |
08e0e7c8 DH |
27 | #include "afs.h" |
28 | #include "afs_vl.h" | |
29 | ||
30 | #define AFS_CELL_MAX_ADDRS 15 | |
31 | ||
31143d5d | 32 | struct pagevec; |
08e0e7c8 DH |
33 | struct afs_call; |
34 | ||
6c6c1d63 DH |
35 | /* |
36 | * Partial file-locking emulation mode. (The problem being that AFS3 only | |
37 | * allows whole-file locks and no upgrading/downgrading). | |
38 | */ | |
39 | enum afs_flock_mode { | |
40 | afs_flock_mode_unset, | |
41 | afs_flock_mode_local, /* Local locking only */ | |
42 | afs_flock_mode_openafs, /* Don't get server lock for a partial lock */ | |
43 | afs_flock_mode_strict, /* Always get a server lock for a partial lock */ | |
44 | afs_flock_mode_write, /* Get an exclusive server lock for a partial lock */ | |
45 | }; | |
46 | ||
13fcc683 | 47 | struct afs_fs_context { |
00d3b7a4 | 48 | bool force; /* T to force cell type */ |
bec5eb61 | 49 | bool autocell; /* T if set auto mount operation */ |
4d673da1 | 50 | bool dyn_root; /* T if dynamic root */ |
13fcc683 | 51 | bool no_cell; /* T if the source is "none" (for dynroot) */ |
6c6c1d63 | 52 | enum afs_flock_mode flock_mode; /* Partial file-locking emulation mode */ |
00d3b7a4 | 53 | afs_voltype_t type; /* type of volume requested */ |
13fcc683 | 54 | unsigned int volnamesz; /* size of volume name */ |
00d3b7a4 | 55 | const char *volname; /* name of volume to mount */ |
5b86d4ff | 56 | struct afs_net *net; /* the AFS net namespace stuff */ |
00d3b7a4 DH |
57 | struct afs_cell *cell; /* cell in which to find volume */ |
58 | struct afs_volume *volume; /* volume record */ | |
59 | struct key *key; /* key to use for secure mounting */ | |
60 | }; | |
61 | ||
c435ee34 DH |
62 | struct afs_iget_data { |
63 | struct afs_fid fid; | |
64 | struct afs_volume *volume; /* volume on which resides */ | |
b8359153 DH |
65 | unsigned int cb_v_break; /* Pre-fetch volume break count */ |
66 | unsigned int cb_s_break; /* Pre-fetch server break count */ | |
c435ee34 DH |
67 | }; |
68 | ||
8e8d7f13 | 69 | enum afs_call_state { |
98bf40cd DH |
70 | AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */ |
71 | AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */ | |
72 | AFS_CALL_CL_PROC_REPLY, /* Client: rxrpc call complete; processing reply */ | |
73 | AFS_CALL_SV_AWAIT_OP_ID, /* Server: Awaiting op ID */ | |
74 | AFS_CALL_SV_AWAIT_REQUEST, /* Server: Awaiting request data */ | |
75 | AFS_CALL_SV_REPLYING, /* Server: Replying */ | |
76 | AFS_CALL_SV_AWAIT_ACK, /* Server: Awaiting final ACK */ | |
77 | AFS_CALL_COMPLETE, /* Completed or failed */ | |
8e8d7f13 | 78 | }; |
f044c884 | 79 | |
8b2a464c DH |
80 | /* |
81 | * List of server addresses. | |
82 | */ | |
83 | struct afs_addr_list { | |
84 | struct rcu_head rcu; /* Must be first */ | |
85 | refcount_t usage; | |
d2ddc776 | 86 | u32 version; /* Version */ |
68eb64c3 DH |
87 | unsigned char max_addrs; |
88 | unsigned char nr_addrs; | |
3bf0fb6f | 89 | unsigned char preferred; /* Preferred address */ |
68eb64c3 | 90 | unsigned char nr_ipv4; /* Number of IPv4 addresses */ |
0a5143f2 DH |
91 | enum dns_record_source source:8; |
92 | enum dns_lookup_status status:8; | |
bf99a53c | 93 | unsigned long probed; /* Mask of servers that have been probed */ |
3bf0fb6f DH |
94 | unsigned long failed; /* Mask of addrs that failed locally/ICMP */ |
95 | unsigned long responded; /* Mask of addrs that responded */ | |
8b2a464c | 96 | struct sockaddr_rxrpc addrs[]; |
68eb64c3 | 97 | #define AFS_MAX_ADDRESSES ((unsigned int)(sizeof(unsigned long) * 8)) |
8b2a464c DH |
98 | }; |
99 | ||
08e0e7c8 DH |
100 | /* |
101 | * a record of an in-progress RxRPC call | |
102 | */ | |
103 | struct afs_call { | |
104 | const struct afs_call_type *type; /* type of call */ | |
3bf0fb6f | 105 | struct afs_addr_list *alist; /* Address is alist[addr_ix] */ |
08e0e7c8 | 106 | wait_queue_head_t waitq; /* processes awaiting completion */ |
341f741f | 107 | struct work_struct async_work; /* async I/O processor */ |
08e0e7c8 | 108 | struct work_struct work; /* actual work processor */ |
08e0e7c8 DH |
109 | struct rxrpc_call *rxcall; /* RxRPC call handle */ |
110 | struct key *key; /* security for this call */ | |
f044c884 | 111 | struct afs_net *net; /* The network namespace */ |
a6853b9c DH |
112 | struct afs_server *server; /* The fileserver record if fs op (pins ref) */ |
113 | struct afs_vlserver *vlserver; /* The vlserver record if vl op */ | |
d2ddc776 | 114 | struct afs_cb_interest *cbi; /* Callback interest for server used */ |
a58823ac | 115 | struct afs_vnode *lvnode; /* vnode being locked */ |
08e0e7c8 | 116 | void *request; /* request data (first part) */ |
4343d008 | 117 | struct address_space *mapping; /* Pages being written from */ |
12bdcf33 DH |
118 | struct iov_iter iter; /* Buffer iterator */ |
119 | struct iov_iter *_iter; /* Iterator currently in use */ | |
120 | union { /* Convenience for ->iter */ | |
121 | struct kvec kvec[1]; | |
122 | struct bio_vec bvec[1]; | |
123 | }; | |
08e0e7c8 | 124 | void *buffer; /* reply receive buffer */ |
ffba718e DH |
125 | union { |
126 | long ret0; /* Value to reply with instead of 0 */ | |
127 | struct afs_addr_list *ret_alist; | |
128 | struct afs_vldb_entry *ret_vldb; | |
129 | struct afs_acl *ret_acl; | |
130 | }; | |
131 | struct afs_fid *out_fid; | |
a58823ac | 132 | struct afs_status_cb *out_dir_scb; |
87182759 | 133 | struct afs_status_cb *out_scb; |
ffba718e DH |
134 | struct yfs_acl *out_yacl; |
135 | struct afs_volsync *out_volsync; | |
136 | struct afs_volume_status *out_volstatus; | |
137 | struct afs_read *read_request; | |
138 | unsigned int server_index; | |
31143d5d DH |
139 | pgoff_t first; /* first page in mapping to deal with */ |
140 | pgoff_t last; /* last page in mapping to deal with */ | |
341f741f | 141 | atomic_t usage; |
8e8d7f13 | 142 | enum afs_call_state state; |
98bf40cd | 143 | spinlock_t state_lock; |
08e0e7c8 | 144 | int error; /* error code */ |
d001648e | 145 | u32 abort_code; /* Remote abort ID or 0 */ |
3bf0fb6f | 146 | u32 epoch; |
94f699c9 | 147 | unsigned int max_lifespan; /* Maximum lifespan to set if not 0 */ |
08e0e7c8 DH |
148 | unsigned request_size; /* size of request data */ |
149 | unsigned reply_max; /* maximum size of reply */ | |
31143d5d | 150 | unsigned first_offset; /* offset into mapping[first] */ |
bcd89270 MD |
151 | union { |
152 | unsigned last_to; /* amount of mapping[last] */ | |
153 | unsigned count2; /* count used in unmarshalling */ | |
154 | }; | |
08e0e7c8 | 155 | unsigned char unmarshall; /* unmarshalling phase */ |
3bf0fb6f | 156 | unsigned char addr_ix; /* Address in ->alist */ |
08e0e7c8 | 157 | bool incoming; /* T if incoming call */ |
31143d5d | 158 | bool send_pages; /* T if data from mapping should be sent */ |
d001648e | 159 | bool need_attention; /* T if RxRPC poked us */ |
56ff9c83 | 160 | bool async; /* T if asynchronous */ |
a68f4a27 | 161 | bool upgrade; /* T to request service upgrade */ |
4571577f | 162 | bool have_reply_time; /* T if have got reply_time */ |
20b8391f | 163 | bool intr; /* T if interruptible */ |
bf99a53c | 164 | u16 service_id; /* Actual service ID (after upgrade) */ |
a25e21f0 | 165 | unsigned int debug_id; /* Trace ID */ |
50a2c953 | 166 | u32 operation_ID; /* operation ID for an incoming call */ |
08e0e7c8 | 167 | u32 count; /* count for use in unmarshalling */ |
12bdcf33 DH |
168 | union { /* place to extract temporary data */ |
169 | struct { | |
170 | __be32 tmp_u; | |
171 | __be32 tmp; | |
172 | } __attribute__((packed)); | |
173 | __be64 tmp64; | |
174 | }; | |
12d8e95a | 175 | ktime_t reply_time; /* Time of first reply packet */ |
08e0e7c8 DH |
176 | }; |
177 | ||
178 | struct afs_call_type { | |
00d3b7a4 | 179 | const char *name; |
025db80c | 180 | unsigned int op; /* Really enum afs_fs_operation */ |
00d3b7a4 | 181 | |
08e0e7c8 DH |
182 | /* deliver request or reply data to an call |
183 | * - returning an error will cause the call to be aborted | |
184 | */ | |
d001648e | 185 | int (*deliver)(struct afs_call *call); |
08e0e7c8 | 186 | |
08e0e7c8 DH |
187 | /* clean up a call */ |
188 | void (*destructor)(struct afs_call *call); | |
341f741f DH |
189 | |
190 | /* Work function */ | |
191 | void (*work)(struct work_struct *work); | |
3bf0fb6f DH |
192 | |
193 | /* Call done function (gets called immediately on success or failure) */ | |
194 | void (*done)(struct afs_call *call); | |
08e0e7c8 DH |
195 | }; |
196 | ||
4343d008 DH |
197 | /* |
198 | * Key available for writeback on a file. | |
199 | */ | |
200 | struct afs_wb_key { | |
201 | refcount_t usage; | |
202 | struct key *key; | |
203 | struct list_head vnode_link; /* Link in vnode->wb_keys */ | |
204 | }; | |
205 | ||
215804a9 DH |
206 | /* |
207 | * AFS open file information record. Pointed to by file->private_data. | |
208 | */ | |
209 | struct afs_file { | |
210 | struct key *key; /* The key this file was opened with */ | |
4343d008 | 211 | struct afs_wb_key *wb; /* Writeback key record for this file */ |
215804a9 DH |
212 | }; |
213 | ||
214 | static inline struct key *afs_file_key(struct file *file) | |
215 | { | |
216 | struct afs_file *af = file->private_data; | |
217 | ||
218 | return af->key; | |
219 | } | |
220 | ||
196ee9cd DH |
221 | /* |
222 | * Record of an outstanding read operation on a vnode. | |
223 | */ | |
224 | struct afs_read { | |
225 | loff_t pos; /* Where to start reading */ | |
e8e581a8 | 226 | loff_t len; /* How much we're asking for */ |
196ee9cd | 227 | loff_t actual_len; /* How much we're actually getting */ |
6a0e3999 | 228 | loff_t remain; /* Amount remaining */ |
f3ddee8d DH |
229 | loff_t file_size; /* File size returned by server */ |
230 | afs_dataversion_t data_version; /* Version number returned by server */ | |
231 | refcount_t usage; | |
196ee9cd | 232 | unsigned int index; /* Which page we're reading into */ |
196ee9cd | 233 | unsigned int nr_pages; |
12bdcf33 | 234 | unsigned int offset; /* offset into current page */ |
a58823ac DH |
235 | struct afs_vnode *vnode; |
236 | void (*page_done)(struct afs_read *); | |
f3ddee8d DH |
237 | struct page **pages; |
238 | struct page *array[]; | |
196ee9cd DH |
239 | }; |
240 | ||
08e0e7c8 DH |
241 | /* |
242 | * AFS superblock private data | |
243 | * - there's one superblock per volume | |
244 | */ | |
245 | struct afs_super_info { | |
5b86d4ff | 246 | struct net *net_ns; /* Network namespace */ |
49566f6f | 247 | struct afs_cell *cell; /* The cell in which the volume resides */ |
08e0e7c8 | 248 | struct afs_volume *volume; /* volume record */ |
6c6c1d63 | 249 | enum afs_flock_mode flock_mode:8; /* File locking emulation mode */ |
4d673da1 | 250 | bool dyn_root; /* True if dynamic root */ |
08e0e7c8 | 251 | }; |
1da177e4 | 252 | |
08e0e7c8 DH |
253 | static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) |
254 | { | |
255 | return sb->s_fs_info; | |
1da177e4 LT |
256 | } |
257 | ||
08e0e7c8 DH |
258 | extern struct file_system_type afs_fs_type; |
259 | ||
6f8880d8 DH |
260 | /* |
261 | * Set of substitutes for @sys. | |
262 | */ | |
263 | struct afs_sysnames { | |
264 | #define AFS_NR_SYSNAME 16 | |
265 | char *subs[AFS_NR_SYSNAME]; | |
266 | refcount_t usage; | |
267 | unsigned short nr; | |
6f8880d8 DH |
268 | char blank[1]; |
269 | }; | |
270 | ||
f044c884 DH |
271 | /* |
272 | * AFS network namespace record. | |
273 | */ | |
274 | struct afs_net { | |
5b86d4ff | 275 | struct net *net; /* Backpointer to the owning net namespace */ |
f044c884 DH |
276 | struct afs_uuid uuid; |
277 | bool live; /* F if this namespace is being removed */ | |
278 | ||
279 | /* AF_RXRPC I/O stuff */ | |
280 | struct socket *socket; | |
281 | struct afs_call *spare_incoming_call; | |
282 | struct work_struct charge_preallocation_work; | |
283 | struct mutex socket_mutex; | |
284 | atomic_t nr_outstanding_calls; | |
285 | atomic_t nr_superblocks; | |
286 | ||
287 | /* Cell database */ | |
989782dc | 288 | struct rb_root cells; |
1588def9 | 289 | struct afs_cell __rcu *ws_cell; |
989782dc DH |
290 | struct work_struct cells_manager; |
291 | struct timer_list cells_timer; | |
292 | atomic_t cells_outstanding; | |
293 | seqlock_t cells_lock; | |
f044c884 | 294 | |
0da0b7fd | 295 | struct mutex proc_cells_lock; |
6b3944e4 | 296 | struct hlist_head proc_cells; |
f044c884 | 297 | |
d2ddc776 DH |
298 | /* Known servers. Theoretically each fileserver can only be in one |
299 | * cell, but in practice, people create aliases and subsets and there's | |
300 | * no easy way to distinguish them. | |
301 | */ | |
302 | seqlock_t fs_lock; /* For fs_servers */ | |
303 | struct rb_root fs_servers; /* afs_server (by server UUID or address) */ | |
304 | struct list_head fs_updates; /* afs_server (by update_at) */ | |
305 | struct hlist_head fs_proc; /* procfs servers list */ | |
f044c884 | 306 | |
d2ddc776 DH |
307 | struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */ |
308 | struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */ | |
309 | seqlock_t fs_addr_lock; /* For fs_addresses[46] */ | |
f044c884 | 310 | |
d2ddc776 DH |
311 | struct work_struct fs_manager; |
312 | struct timer_list fs_timer; | |
59fa1c4a | 313 | atomic_t servers_outstanding; |
f044c884 | 314 | |
d2ddc776 DH |
315 | /* File locking renewal management */ |
316 | struct mutex lock_manager_mutex; | |
317 | ||
f044c884 | 318 | /* Misc */ |
0da0b7fd | 319 | struct super_block *dynroot_sb; /* Dynamic root mount superblock */ |
d55b4da4 | 320 | struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ |
6f8880d8 DH |
321 | struct afs_sysnames *sysnames; |
322 | rwlock_t sysnames_lock; | |
d55b4da4 DH |
323 | |
324 | /* Statistics counters */ | |
325 | atomic_t n_lookup; /* Number of lookups done */ | |
326 | atomic_t n_reval; /* Number of dentries needing revalidation */ | |
327 | atomic_t n_inval; /* Number of invalidations by the server */ | |
f3ddee8d | 328 | atomic_t n_relpg; /* Number of invalidations by releasepage */ |
d55b4da4 | 329 | atomic_t n_read_dir; /* Number of directory pages read */ |
63a4681f DH |
330 | atomic_t n_dir_cr; /* Number of directory entry creation edits */ |
331 | atomic_t n_dir_rm; /* Number of directory entry removal edits */ | |
76a5cb6f DH |
332 | atomic_t n_stores; /* Number of store ops */ |
333 | atomic_long_t n_store_bytes; /* Number of bytes stored */ | |
334 | atomic_long_t n_fetch_bytes; /* Number of bytes fetched */ | |
335 | atomic_t n_fetches; /* Number of data fetch ops */ | |
f044c884 DH |
336 | }; |
337 | ||
6f8880d8 | 338 | extern const char afs_init_sysname[]; |
f044c884 | 339 | |
989782dc DH |
340 | enum afs_cell_state { |
341 | AFS_CELL_UNSET, | |
342 | AFS_CELL_ACTIVATING, | |
343 | AFS_CELL_ACTIVE, | |
344 | AFS_CELL_DEACTIVATING, | |
345 | AFS_CELL_INACTIVE, | |
346 | AFS_CELL_FAILED, | |
347 | }; | |
348 | ||
08e0e7c8 | 349 | /* |
d2ddc776 DH |
350 | * AFS cell record. |
351 | * | |
352 | * This is a tricky concept to get right as it is possible to create aliases | |
353 | * simply by pointing AFSDB/SRV records for two names at the same set of VL | |
354 | * servers; it is also possible to do things like setting up two sets of VL | |
355 | * servers, one of which provides a superset of the volumes provided by the | |
356 | * other (for internal/external division, for example). | |
357 | * | |
358 | * Cells only exist in the sense that (a) a cell's name maps to a set of VL | |
359 | * servers and (b) a cell's name is used by the client to select the key to use | |
360 | * for authentication and encryption. The cell name is not typically used in | |
361 | * the protocol. | |
362 | * | |
363 | * There is no easy way to determine if two cells are aliases or one is a | |
364 | * subset of another. | |
08e0e7c8 DH |
365 | */ |
366 | struct afs_cell { | |
989782dc DH |
367 | union { |
368 | struct rcu_head rcu; | |
369 | struct rb_node net_node; /* Node in net->cells */ | |
370 | }; | |
371 | struct afs_net *net; | |
00d3b7a4 | 372 | struct key *anonymous_key; /* anonymous user key for this cell */ |
989782dc | 373 | struct work_struct manager; /* Manager for init/deinit/dns */ |
6b3944e4 | 374 | struct hlist_node proc_link; /* /proc cell list link */ |
9b3f26c9 DH |
375 | #ifdef CONFIG_AFS_FSCACHE |
376 | struct fscache_cookie *cache; /* caching cookie */ | |
08e0e7c8 | 377 | #endif |
989782dc DH |
378 | time64_t dns_expiry; /* Time AFSDB/SRV record expires */ |
379 | time64_t last_inactive; /* Time of last drop of usage count */ | |
380 | atomic_t usage; | |
381 | unsigned long flags; | |
d5c32c89 DH |
382 | #define AFS_CELL_FL_NO_GC 0 /* The cell was added manually, don't auto-gc */ |
383 | #define AFS_CELL_FL_DO_LOOKUP 1 /* DNS lookup requested */ | |
989782dc DH |
384 | enum afs_cell_state state; |
385 | short error; | |
d5c32c89 DH |
386 | enum dns_record_source dns_source:8; /* Latest source of data from lookup */ |
387 | enum dns_lookup_status dns_status:8; /* Latest status of data from lookup */ | |
388 | unsigned int dns_lookup_count; /* Counter of DNS lookups */ | |
989782dc | 389 | |
d2ddc776 DH |
390 | /* Active fileserver interaction state. */ |
391 | struct list_head proc_volumes; /* procfs volume list */ | |
392 | rwlock_t proc_lock; | |
989782dc | 393 | |
d2ddc776 | 394 | /* VL server list. */ |
0a5143f2 DH |
395 | rwlock_t vl_servers_lock; /* Lock on vl_servers */ |
396 | struct afs_vlserver_list __rcu *vl_servers; | |
397 | ||
989782dc DH |
398 | u8 name_len; /* Length of name */ |
399 | char name[64 + 1]; /* Cell name, case-flattened and NUL-padded */ | |
08e0e7c8 DH |
400 | }; |
401 | ||
0a5143f2 DH |
402 | /* |
403 | * Volume Location server record. | |
404 | */ | |
405 | struct afs_vlserver { | |
406 | struct rcu_head rcu; | |
407 | struct afs_addr_list __rcu *addresses; /* List of addresses for this VL server */ | |
408 | unsigned long flags; | |
409 | #define AFS_VLSERVER_FL_PROBED 0 /* The VL server has been probed */ | |
410 | #define AFS_VLSERVER_FL_PROBING 1 /* VL server is being probed */ | |
3bf0fb6f | 411 | #define AFS_VLSERVER_FL_IS_YFS 2 /* Server is YFS not AFS */ |
0a5143f2 DH |
412 | rwlock_t lock; /* Lock on addresses */ |
413 | atomic_t usage; | |
3bf0fb6f DH |
414 | |
415 | /* Probe state */ | |
416 | wait_queue_head_t probe_wq; | |
417 | atomic_t probe_outstanding; | |
418 | spinlock_t probe_lock; | |
419 | struct { | |
420 | unsigned int rtt; /* RTT as ktime/64 */ | |
421 | u32 abort_code; | |
422 | short error; | |
423 | bool have_result; | |
424 | bool responded:1; | |
425 | bool is_yfs:1; | |
426 | bool not_yfs:1; | |
427 | bool local_failure:1; | |
428 | } probe; | |
429 | ||
0a5143f2 | 430 | u16 port; |
3bf0fb6f | 431 | u16 name_len; /* Length of name */ |
0a5143f2 DH |
432 | char name[]; /* Server name, case-flattened */ |
433 | }; | |
434 | ||
435 | /* | |
436 | * Weighted list of Volume Location servers. | |
437 | */ | |
438 | struct afs_vlserver_entry { | |
439 | u16 priority; /* Preference (as SRV) */ | |
440 | u16 weight; /* Weight (as SRV) */ | |
441 | enum dns_record_source source:8; | |
442 | enum dns_lookup_status status:8; | |
443 | struct afs_vlserver *server; | |
444 | }; | |
445 | ||
446 | struct afs_vlserver_list { | |
447 | struct rcu_head rcu; | |
448 | atomic_t usage; | |
449 | u8 nr_servers; | |
450 | u8 index; /* Server currently in use */ | |
3bf0fb6f | 451 | u8 preferred; /* Preferred server */ |
0a5143f2 DH |
452 | enum dns_record_source source:8; |
453 | enum dns_lookup_status status:8; | |
454 | rwlock_t lock; | |
455 | struct afs_vlserver_entry servers[]; | |
456 | }; | |
457 | ||
08e0e7c8 | 458 | /* |
d2ddc776 DH |
459 | * Cached VLDB entry. |
460 | * | |
461 | * This is pointed to by cell->vldb_entries, indexed by name. | |
08e0e7c8 | 462 | */ |
d2ddc776 DH |
463 | struct afs_vldb_entry { |
464 | afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */ | |
00d3b7a4 | 465 | |
d2ddc776 DH |
466 | unsigned long flags; |
467 | #define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */ | |
468 | #define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */ | |
469 | #define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */ | |
470 | #define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */ | |
471 | #define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */ | |
472 | ||
473 | uuid_t fs_server[AFS_NMAXNSERVERS]; | |
474 | u8 fs_mask[AFS_NMAXNSERVERS]; | |
08e0e7c8 DH |
475 | #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ |
476 | #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ | |
477 | #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ | |
d2ddc776 DH |
478 | short error; |
479 | u8 nr_servers; /* Number of server records */ | |
480 | u8 name_len; | |
481 | u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ | |
08e0e7c8 DH |
482 | }; |
483 | ||
484 | /* | |
d2ddc776 | 485 | * Record of fileserver with which we're actively communicating. |
08e0e7c8 DH |
486 | */ |
487 | struct afs_server { | |
d2ddc776 DH |
488 | struct rcu_head rcu; |
489 | union { | |
490 | uuid_t uuid; /* Server ID */ | |
491 | struct afs_uuid _uuid; | |
492 | }; | |
493 | ||
494 | struct afs_addr_list __rcu *addresses; | |
495 | struct rb_node uuid_rb; /* Link in net->servers */ | |
496 | struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ | |
497 | struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ | |
498 | struct hlist_node proc_link; /* Link in net->fs_proc */ | |
499 | struct afs_server *gc_next; /* Next server in manager's list */ | |
500 | time64_t put_time; /* Time at which last put */ | |
501 | time64_t update_at; /* Time at which to next update the record */ | |
c435ee34 | 502 | unsigned long flags; |
d2ddc776 DH |
503 | #define AFS_SERVER_FL_NOT_READY 1 /* The record is not ready for use */ |
504 | #define AFS_SERVER_FL_NOT_FOUND 2 /* VL server says no such server */ | |
505 | #define AFS_SERVER_FL_VL_FAIL 3 /* Failed to access VL server */ | |
506 | #define AFS_SERVER_FL_UPDATING 4 | |
507 | #define AFS_SERVER_FL_PROBED 5 /* The fileserver has been probed */ | |
508 | #define AFS_SERVER_FL_PROBING 6 /* Fileserver is being probed */ | |
5cf9dd55 | 509 | #define AFS_SERVER_FL_NO_IBULK 7 /* Fileserver doesn't support FS.InlineBulkStatus */ |
f2686b09 | 510 | #define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */ |
30062bd1 DH |
511 | #define AFS_SERVER_FL_IS_YFS 9 /* Server is YFS not AFS */ |
512 | #define AFS_SERVER_FL_NO_RM2 10 /* Fileserver doesn't support YFS.RemoveFile2 */ | |
3bf0fb6f | 513 | #define AFS_SERVER_FL_HAVE_EPOCH 11 /* ->epoch is valid */ |
d2ddc776 DH |
514 | atomic_t usage; |
515 | u32 addr_version; /* Address list version */ | |
3bf0fb6f | 516 | u32 cm_epoch; /* Server RxRPC epoch */ |
45218193 | 517 | unsigned int debug_id; /* Debugging ID for traces */ |
08e0e7c8 DH |
518 | |
519 | /* file service access */ | |
d2ddc776 | 520 | rwlock_t fs_lock; /* access lock */ |
08e0e7c8 DH |
521 | |
522 | /* callback promise management */ | |
47ea0f2e | 523 | struct hlist_head cb_volumes; /* List of volume interests on this server */ |
c435ee34 DH |
524 | unsigned cb_s_break; /* Break-everything counter. */ |
525 | rwlock_t cb_break_lock; /* Volume finding lock */ | |
3bf0fb6f DH |
526 | |
527 | /* Probe state */ | |
528 | wait_queue_head_t probe_wq; | |
529 | atomic_t probe_outstanding; | |
530 | spinlock_t probe_lock; | |
531 | struct { | |
532 | unsigned int rtt; /* RTT as ktime/64 */ | |
533 | u32 abort_code; | |
534 | u32 cm_epoch; | |
535 | short error; | |
536 | bool have_result; | |
537 | bool responded:1; | |
538 | bool is_yfs:1; | |
539 | bool not_yfs:1; | |
540 | bool local_failure:1; | |
541 | bool no_epoch:1; | |
542 | bool cm_probed:1; | |
543 | bool said_rebooted:1; | |
544 | bool said_inconsistent:1; | |
545 | } probe; | |
c435ee34 DH |
546 | }; |
547 | ||
47ea0f2e DH |
548 | /* |
549 | * Volume collation in the server's callback interest list. | |
550 | */ | |
551 | struct afs_vol_interest { | |
552 | struct hlist_node srv_link; /* Link in server->cb_volumes */ | |
553 | struct hlist_head cb_interests; /* List of callback interests on the server */ | |
f642404a DH |
554 | union { |
555 | struct rcu_head rcu; | |
556 | afs_volid_t vid; /* Volume ID to match */ | |
557 | }; | |
47ea0f2e DH |
558 | unsigned int usage; |
559 | }; | |
560 | ||
c435ee34 DH |
561 | /* |
562 | * Interest by a superblock on a server. | |
563 | */ | |
564 | struct afs_cb_interest { | |
47ea0f2e DH |
565 | struct hlist_node cb_vlink; /* Link in vol_interest->cb_interests */ |
566 | struct afs_vol_interest *vol_interest; | |
c435ee34 DH |
567 | struct afs_server *server; /* Server on which this interest resides */ |
568 | struct super_block *sb; /* Superblock on which inodes reside */ | |
f642404a DH |
569 | union { |
570 | struct rcu_head rcu; | |
571 | afs_volid_t vid; /* Volume ID to match */ | |
572 | }; | |
c435ee34 | 573 | refcount_t usage; |
08e0e7c8 DH |
574 | }; |
575 | ||
576 | /* | |
d2ddc776 DH |
577 | * Replaceable server list. |
578 | */ | |
579 | struct afs_server_entry { | |
580 | struct afs_server *server; | |
581 | struct afs_cb_interest *cb_interest; | |
582 | }; | |
583 | ||
584 | struct afs_server_list { | |
585 | refcount_t usage; | |
3bf0fb6f DH |
586 | unsigned char nr_servers; |
587 | unsigned char preferred; /* Preferred server */ | |
d2ddc776 DH |
588 | unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ |
589 | unsigned int seq; /* Set to ->servers_seq when installed */ | |
d4a96bec | 590 | rwlock_t lock; |
d2ddc776 DH |
591 | struct afs_server_entry servers[]; |
592 | }; | |
593 | ||
594 | /* | |
595 | * Live AFS volume management. | |
08e0e7c8 DH |
596 | */ |
597 | struct afs_volume { | |
d2ddc776 | 598 | afs_volid_t vid; /* volume ID */ |
08e0e7c8 | 599 | atomic_t usage; |
d2ddc776 DH |
600 | time64_t update_at; /* Time at which to next update */ |
601 | struct afs_cell *cell; /* Cell to which belongs (pins ref) */ | |
602 | struct list_head proc_link; /* Link in cell->vl_proc */ | |
603 | unsigned long flags; | |
604 | #define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */ | |
605 | #define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */ | |
606 | #define AFS_VOLUME_WAIT 2 /* - T if users must wait for update */ | |
607 | #define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */ | |
608 | #define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */ | |
609 | #define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */ | |
9b3f26c9 DH |
610 | #ifdef CONFIG_AFS_FSCACHE |
611 | struct fscache_cookie *cache; /* caching cookie */ | |
08e0e7c8 | 612 | #endif |
d2ddc776 DH |
613 | struct afs_server_list *servers; /* List of servers on which volume resides */ |
614 | rwlock_t servers_lock; /* Lock for ->servers */ | |
615 | unsigned int servers_seq; /* Incremented each time ->servers changes */ | |
616 | ||
68251f0a | 617 | unsigned cb_v_break; /* Break-everything counter. */ |
90fa9b64 | 618 | rwlock_t cb_v_break_lock; |
68251f0a | 619 | |
08e0e7c8 | 620 | afs_voltype_t type; /* type of volume */ |
d2ddc776 | 621 | short error; |
08e0e7c8 | 622 | char type_force; /* force volume type (suppress R/O -> R/W) */ |
d2ddc776 DH |
623 | u8 name_len; |
624 | u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ | |
08e0e7c8 DH |
625 | }; |
626 | ||
0fafdc9f DH |
627 | enum afs_lock_state { |
628 | AFS_VNODE_LOCK_NONE, /* The vnode has no lock on the server */ | |
629 | AFS_VNODE_LOCK_WAITING_FOR_CB, /* We're waiting for the server to break the callback */ | |
630 | AFS_VNODE_LOCK_SETTING, /* We're asking the server for a lock */ | |
631 | AFS_VNODE_LOCK_GRANTED, /* We have a lock on the server */ | |
632 | AFS_VNODE_LOCK_EXTENDING, /* We're extending a lock on the server */ | |
633 | AFS_VNODE_LOCK_NEED_UNLOCK, /* We need to unlock on the server */ | |
634 | AFS_VNODE_LOCK_UNLOCKING, /* We're telling the server to unlock */ | |
cdfb26b4 | 635 | AFS_VNODE_LOCK_DELETED, /* The vnode has been deleted whilst we have a lock */ |
0fafdc9f DH |
636 | }; |
637 | ||
08e0e7c8 | 638 | /* |
f8de483e DH |
639 | * AFS inode private data. |
640 | * | |
641 | * Note that afs_alloc_inode() *must* reset anything that could incorrectly | |
642 | * leak from one inode to another. | |
08e0e7c8 DH |
643 | */ |
644 | struct afs_vnode { | |
645 | struct inode vfs_inode; /* the VFS's inode record */ | |
646 | ||
647 | struct afs_volume *volume; /* volume on which vnode resides */ | |
08e0e7c8 DH |
648 | struct afs_fid fid; /* the file identifier for this inode */ |
649 | struct afs_file_status status; /* AFS status info for this file */ | |
a4ff7401 | 650 | afs_dataversion_t invalid_before; /* Child dentries are invalid before this */ |
9b3f26c9 DH |
651 | #ifdef CONFIG_AFS_FSCACHE |
652 | struct fscache_cookie *cache; /* caching cookie */ | |
08e0e7c8 | 653 | #endif |
fe342cf7 | 654 | struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */ |
d2ddc776 | 655 | struct mutex io_lock; /* Lock for serialising I/O on this mutex */ |
b61f7dcf | 656 | struct rw_semaphore validate_lock; /* lock for validating this vnode */ |
79ddbfa5 DH |
657 | struct rw_semaphore rmdir_lock; /* Lock for rmdir vs sillyrename */ |
658 | struct key *silly_key; /* Silly rename key */ | |
4343d008 | 659 | spinlock_t wb_lock; /* lock for wb_keys */ |
08e0e7c8 DH |
660 | spinlock_t lock; /* waitqueue/flags lock */ |
661 | unsigned long flags; | |
c435ee34 | 662 | #define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */ |
260a9803 | 663 | #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ |
f3ddee8d | 664 | #define AFS_VNODE_DIR_VALID 2 /* Set if dir contents are valid */ |
08e0e7c8 DH |
665 | #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ |
666 | #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ | |
667 | #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ | |
0fafdc9f DH |
668 | #define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ |
669 | #define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ | |
5a813276 | 670 | #define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */ |
08e0e7c8 | 671 | |
4343d008 | 672 | struct list_head wb_keys; /* List of keys available for writeback */ |
e8d6c554 DH |
673 | struct list_head pending_locks; /* locks waiting to be granted */ |
674 | struct list_head granted_locks; /* locks granted on this file */ | |
675 | struct delayed_work lock_work; /* work to be done in locking */ | |
0fafdc9f | 676 | struct key *lock_key; /* Key to be used in lock ops */ |
a690f60a | 677 | ktime_t locked_at; /* Time at which lock obtained */ |
0fafdc9f DH |
678 | enum afs_lock_state lock_state : 8; |
679 | afs_lock_type_t lock_type : 8; | |
31143d5d | 680 | |
08e0e7c8 | 681 | /* outstanding callback notification on this file */ |
f642404a | 682 | struct afs_cb_interest __rcu *cb_interest; /* Server on which this resides */ |
c435ee34 | 683 | unsigned int cb_s_break; /* Mass break counter on ->server */ |
68251f0a | 684 | unsigned int cb_v_break; /* Mass break counter on ->volume */ |
c435ee34 DH |
685 | unsigned int cb_break; /* Break counter on vnode */ |
686 | seqlock_t cb_lock; /* Lock for ->cb_interest, ->status, ->cb_*break */ | |
687 | ||
688 | time64_t cb_expires_at; /* time at which callback expires */ | |
08e0e7c8 DH |
689 | }; |
690 | ||
12bdcf33 DH |
691 | static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode) |
692 | { | |
693 | #ifdef CONFIG_AFS_FSCACHE | |
694 | return vnode->cache; | |
695 | #else | |
696 | return NULL; | |
697 | #endif | |
698 | } | |
699 | ||
00d3b7a4 DH |
700 | /* |
701 | * cached security record for one user's attempt to access a vnode | |
702 | */ | |
703 | struct afs_permit { | |
704 | struct key *key; /* RxRPC ticket holding a security context */ | |
be080a6f | 705 | afs_access_t access; /* CallerAccess value for this key */ |
00d3b7a4 DH |
706 | }; |
707 | ||
708 | /* | |
be080a6f DH |
709 | * Immutable cache of CallerAccess records from attempts to access vnodes. |
710 | * These may be shared between multiple vnodes. | |
00d3b7a4 DH |
711 | */ |
712 | struct afs_permits { | |
be080a6f DH |
713 | struct rcu_head rcu; |
714 | struct hlist_node hash_node; /* Link in hash */ | |
715 | unsigned long h; /* Hash value for this permit list */ | |
716 | refcount_t usage; | |
717 | unsigned short nr_permits; /* Number of records */ | |
718 | bool invalidated; /* Invalidated due to key change */ | |
719 | struct afs_permit permits[]; /* List of permits sorted by key pointer */ | |
00d3b7a4 DH |
720 | }; |
721 | ||
4584ae96 DH |
722 | /* |
723 | * Error prioritisation and accumulation. | |
724 | */ | |
725 | struct afs_error { | |
726 | short error; /* Accumulated error */ | |
727 | bool responded; /* T if server responded */ | |
728 | }; | |
729 | ||
8b2a464c DH |
730 | /* |
731 | * Cursor for iterating over a server's address list. | |
732 | */ | |
733 | struct afs_addr_cursor { | |
734 | struct afs_addr_list *alist; /* Current address list (pins ref) */ | |
3bf0fb6f DH |
735 | unsigned long tried; /* Tried addresses */ |
736 | signed char index; /* Current address */ | |
8b2a464c | 737 | bool responded; /* T if the current address responded */ |
744bcd71 | 738 | unsigned short nr_iterations; /* Number of address iterations */ |
3bf0fb6f DH |
739 | short error; |
740 | u32 abort_code; | |
8b2a464c DH |
741 | }; |
742 | ||
0a5143f2 DH |
743 | /* |
744 | * Cursor for iterating over a set of volume location servers. | |
745 | */ | |
746 | struct afs_vl_cursor { | |
747 | struct afs_addr_cursor ac; | |
748 | struct afs_cell *cell; /* The cell we're querying */ | |
749 | struct afs_vlserver_list *server_list; /* Current server list (pins ref) */ | |
3bf0fb6f | 750 | struct afs_vlserver *server; /* Server on which this resides */ |
0a5143f2 | 751 | struct key *key; /* Key for the server */ |
3bf0fb6f DH |
752 | unsigned long untried; /* Bitmask of untried servers */ |
753 | short index; /* Current server */ | |
0a5143f2 DH |
754 | short error; |
755 | unsigned short flags; | |
756 | #define AFS_VL_CURSOR_STOP 0x0001 /* Set to cease iteration */ | |
757 | #define AFS_VL_CURSOR_RETRY 0x0002 /* Set to do a retry */ | |
758 | #define AFS_VL_CURSOR_RETRIED 0x0004 /* Set if started a retry */ | |
744bcd71 | 759 | unsigned short nr_iterations; /* Number of server iterations */ |
0a5143f2 DH |
760 | }; |
761 | ||
8b2a464c DH |
762 | /* |
763 | * Cursor for iterating over a set of fileservers. | |
764 | */ | |
765 | struct afs_fs_cursor { | |
a58823ac | 766 | const struct afs_call_type *type; /* Type of call done */ |
8b2a464c | 767 | struct afs_addr_cursor ac; |
d2ddc776 DH |
768 | struct afs_vnode *vnode; |
769 | struct afs_server_list *server_list; /* Current server list (pins ref) */ | |
770 | struct afs_cb_interest *cbi; /* Server on which this resides (pins ref) */ | |
771 | struct key *key; /* Key for the server */ | |
3bf0fb6f | 772 | unsigned long untried; /* Bitmask of untried servers */ |
d2ddc776 DH |
773 | unsigned int cb_break; /* cb_break + cb_s_break before the call */ |
774 | unsigned int cb_break_2; /* cb_break + cb_s_break (2nd vnode) */ | |
3bf0fb6f | 775 | short index; /* Current server */ |
e7f680f4 | 776 | short error; |
d2ddc776 DH |
777 | unsigned short flags; |
778 | #define AFS_FS_CURSOR_STOP 0x0001 /* Set to cease iteration */ | |
779 | #define AFS_FS_CURSOR_VBUSY 0x0002 /* Set if seen VBUSY */ | |
780 | #define AFS_FS_CURSOR_VMOVED 0x0004 /* Set if seen VMOVED */ | |
781 | #define AFS_FS_CURSOR_VNOVOL 0x0008 /* Set if seen VNOVOL */ | |
782 | #define AFS_FS_CURSOR_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ | |
783 | #define AFS_FS_CURSOR_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ | |
20b8391f | 784 | #define AFS_FS_CURSOR_INTR 0x0040 /* Set if op is interruptible */ |
744bcd71 | 785 | unsigned short nr_iterations; /* Number of server iterations */ |
8b2a464c DH |
786 | }; |
787 | ||
402cb8dd DH |
788 | /* |
789 | * Cache auxiliary data. | |
790 | */ | |
791 | struct afs_vnode_cache_aux { | |
792 | u64 data_version; | |
793 | } __packed; | |
794 | ||
98bf40cd DH |
795 | #include <trace/events/afs.h> |
796 | ||
08e0e7c8 | 797 | /*****************************************************************************/ |
8b2a464c DH |
798 | /* |
799 | * addr_list.c | |
800 | */ | |
801 | static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist) | |
802 | { | |
803 | if (alist) | |
804 | refcount_inc(&alist->usage); | |
805 | return alist; | |
806 | } | |
807 | extern struct afs_addr_list *afs_alloc_addrlist(unsigned int, | |
808 | unsigned short, | |
809 | unsigned short); | |
810 | extern void afs_put_addrlist(struct afs_addr_list *); | |
0a5143f2 DH |
811 | extern struct afs_vlserver_list *afs_parse_text_addrs(struct afs_net *, |
812 | const char *, size_t, char, | |
813 | unsigned short, unsigned short); | |
814 | extern struct afs_vlserver_list *afs_dns_query(struct afs_cell *, time64_t *); | |
8b2a464c DH |
815 | extern bool afs_iterate_addresses(struct afs_addr_cursor *); |
816 | extern int afs_end_cursor(struct afs_addr_cursor *); | |
8b2a464c | 817 | |
bf99a53c DH |
818 | extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16); |
819 | extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16); | |
d2ddc776 | 820 | |
9b3f26c9 DH |
821 | /* |
822 | * cache.c | |
823 | */ | |
824 | #ifdef CONFIG_AFS_FSCACHE | |
825 | extern struct fscache_netfs afs_cache_netfs; | |
826 | extern struct fscache_cookie_def afs_cell_cache_index_def; | |
9b3f26c9 DH |
827 | extern struct fscache_cookie_def afs_volume_cache_index_def; |
828 | extern struct fscache_cookie_def afs_vnode_cache_index_def; | |
829 | #else | |
830 | #define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL) | |
9b3f26c9 DH |
831 | #define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL) |
832 | #define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL) | |
833 | #endif | |
834 | ||
08e0e7c8 DH |
835 | /* |
836 | * callback.c | |
837 | */ | |
838 | extern void afs_init_callback_state(struct afs_server *); | |
051d2525 DH |
839 | extern void __afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); |
840 | extern void afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); | |
841 | extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break *); | |
c435ee34 | 842 | |
d4a96bec DH |
843 | extern int afs_register_server_cb_interest(struct afs_vnode *, |
844 | struct afs_server_list *, unsigned int); | |
c435ee34 | 845 | extern void afs_put_cb_interest(struct afs_net *, struct afs_cb_interest *); |
d2ddc776 | 846 | extern void afs_clear_callback_interests(struct afs_net *, struct afs_server_list *); |
c435ee34 DH |
847 | |
848 | static inline struct afs_cb_interest *afs_get_cb_interest(struct afs_cb_interest *cbi) | |
849 | { | |
d4a96bec DH |
850 | if (cbi) |
851 | refcount_inc(&cbi->usage); | |
c435ee34 DH |
852 | return cbi; |
853 | } | |
08e0e7c8 | 854 | |
68251f0a DH |
855 | static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode) |
856 | { | |
eeba1e9c | 857 | return vnode->cb_break + vnode->cb_v_break; |
68251f0a DH |
858 | } |
859 | ||
18ac6185 DH |
860 | static inline bool afs_cb_is_broken(unsigned int cb_break, |
861 | const struct afs_vnode *vnode, | |
862 | const struct afs_cb_interest *cbi) | |
68251f0a | 863 | { |
18ac6185 | 864 | return !cbi || cb_break != (vnode->cb_break + |
18ac6185 | 865 | vnode->volume->cb_v_break); |
68251f0a DH |
866 | } |
867 | ||
1da177e4 LT |
868 | /* |
869 | * cell.c | |
870 | */ | |
989782dc DH |
871 | extern int afs_cell_init(struct afs_net *, const char *); |
872 | extern struct afs_cell *afs_lookup_cell_rcu(struct afs_net *, const char *, unsigned); | |
873 | extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned, | |
874 | const char *, bool); | |
8b2a464c | 875 | extern struct afs_cell *afs_get_cell(struct afs_cell *); |
9ed900b1 | 876 | extern void afs_put_cell(struct afs_net *, struct afs_cell *); |
989782dc DH |
877 | extern void afs_manage_cells(struct work_struct *); |
878 | extern void afs_cells_timer(struct timer_list *); | |
f044c884 | 879 | extern void __net_exit afs_cell_purge(struct afs_net *); |
08e0e7c8 DH |
880 | |
881 | /* | |
882 | * cmservice.c | |
883 | */ | |
884 | extern bool afs_cm_incoming_call(struct afs_call *); | |
885 | ||
1da177e4 LT |
886 | /* |
887 | * dir.c | |
888 | */ | |
4d673da1 | 889 | extern const struct file_operations afs_dir_file_operations; |
754661f1 | 890 | extern const struct inode_operations afs_dir_inode_operations; |
f3ddee8d | 891 | extern const struct address_space_operations afs_dir_aops; |
d61dcce2 | 892 | extern const struct dentry_operations afs_fs_dentry_operations; |
4d673da1 | 893 | |
66c7e1d3 DH |
894 | extern void afs_d_release(struct dentry *); |
895 | ||
63a4681f DH |
896 | /* |
897 | * dir_edit.c | |
898 | */ | |
899 | extern void afs_edit_dir_add(struct afs_vnode *, struct qstr *, struct afs_fid *, | |
900 | enum afs_edit_dir_reason); | |
901 | extern void afs_edit_dir_remove(struct afs_vnode *, struct qstr *, enum afs_edit_dir_reason); | |
902 | ||
79ddbfa5 DH |
903 | /* |
904 | * dir_silly.c | |
905 | */ | |
906 | extern int afs_sillyrename(struct afs_vnode *, struct afs_vnode *, | |
907 | struct dentry *, struct key *); | |
908 | extern int afs_silly_iput(struct dentry *, struct inode *); | |
909 | ||
66c7e1d3 DH |
910 | /* |
911 | * dynroot.c | |
912 | */ | |
913 | extern const struct file_operations afs_dynroot_file_operations; | |
914 | extern const struct inode_operations afs_dynroot_inode_operations; | |
915 | extern const struct dentry_operations afs_dynroot_dentry_operations; | |
916 | ||
917 | extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *); | |
0da0b7fd DH |
918 | extern int afs_dynroot_mkdir(struct afs_net *, struct afs_cell *); |
919 | extern void afs_dynroot_rmdir(struct afs_net *, struct afs_cell *); | |
920 | extern int afs_dynroot_populate(struct super_block *); | |
921 | extern void afs_dynroot_depopulate(struct super_block *); | |
1da177e4 LT |
922 | |
923 | /* | |
924 | * file.c | |
925 | */ | |
f5e54d6e | 926 | extern const struct address_space_operations afs_fs_aops; |
754661f1 | 927 | extern const struct inode_operations afs_file_inode_operations; |
00d3b7a4 DH |
928 | extern const struct file_operations afs_file_operations; |
929 | ||
4343d008 DH |
930 | extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *); |
931 | extern void afs_put_wb_key(struct afs_wb_key *); | |
00d3b7a4 DH |
932 | extern int afs_open(struct inode *, struct file *); |
933 | extern int afs_release(struct inode *, struct file *); | |
d2ddc776 | 934 | extern int afs_fetch_data(struct afs_vnode *, struct key *, struct afs_read *); |
f6d335c0 | 935 | extern int afs_page_filler(void *, struct page *); |
196ee9cd | 936 | extern void afs_put_read(struct afs_read *); |
1da177e4 | 937 | |
e8d6c554 DH |
938 | /* |
939 | * flock.c | |
940 | */ | |
f044c884 DH |
941 | extern struct workqueue_struct *afs_lock_manager; |
942 | ||
a690f60a | 943 | extern void afs_lock_op_done(struct afs_call *); |
e8d6c554 DH |
944 | extern void afs_lock_work(struct work_struct *); |
945 | extern void afs_lock_may_be_available(struct afs_vnode *); | |
946 | extern int afs_lock(struct file *, int, struct file_lock *); | |
947 | extern int afs_flock(struct file *, int, struct file_lock *); | |
948 | ||
08e0e7c8 DH |
949 | /* |
950 | * fsclient.c | |
951 | */ | |
a58823ac DH |
952 | extern int afs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_status_cb *, |
953 | struct afs_volsync *); | |
d2ddc776 | 954 | extern int afs_fs_give_up_callbacks(struct afs_net *, struct afs_server *); |
a58823ac DH |
955 | extern int afs_fs_fetch_data(struct afs_fs_cursor *, struct afs_status_cb *, struct afs_read *); |
956 | extern int afs_fs_create(struct afs_fs_cursor *, const char *, umode_t, | |
957 | struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *); | |
958 | extern int afs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool, | |
959 | struct afs_status_cb *); | |
960 | extern int afs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, | |
961 | struct afs_status_cb *, struct afs_status_cb *); | |
962 | extern int afs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, | |
963 | struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *); | |
d2ddc776 | 964 | extern int afs_fs_rename(struct afs_fs_cursor *, const char *, |
a58823ac DH |
965 | struct afs_vnode *, const char *, |
966 | struct afs_status_cb *, struct afs_status_cb *); | |
4343d008 | 967 | extern int afs_fs_store_data(struct afs_fs_cursor *, struct address_space *, |
a58823ac DH |
968 | pgoff_t, pgoff_t, unsigned, unsigned, struct afs_status_cb *); |
969 | extern int afs_fs_setattr(struct afs_fs_cursor *, struct iattr *, struct afs_status_cb *); | |
d2ddc776 | 970 | extern int afs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *); |
a58823ac DH |
971 | extern int afs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t, struct afs_status_cb *); |
972 | extern int afs_fs_extend_lock(struct afs_fs_cursor *, struct afs_status_cb *); | |
973 | extern int afs_fs_release_lock(struct afs_fs_cursor *, struct afs_status_cb *); | |
d2ddc776 DH |
974 | extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, |
975 | struct afs_addr_cursor *, struct key *); | |
0b9bf381 DH |
976 | extern struct afs_call *afs_fs_get_capabilities(struct afs_net *, struct afs_server *, |
977 | struct afs_addr_cursor *, struct key *, | |
978 | unsigned int); | |
5cf9dd55 | 979 | extern int afs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, |
87182759 DH |
980 | struct afs_fid *, struct afs_status_cb *, |
981 | unsigned int, struct afs_volsync *); | |
5cf9dd55 | 982 | extern int afs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, |
a58823ac DH |
983 | struct afs_fid *, struct afs_status_cb *, |
984 | struct afs_volsync *); | |
08e0e7c8 | 985 | |
260f082b DH |
986 | struct afs_acl { |
987 | u32 size; | |
988 | u8 data[]; | |
989 | }; | |
990 | ||
a58823ac DH |
991 | extern struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *, struct afs_status_cb *); |
992 | extern int afs_fs_store_acl(struct afs_fs_cursor *, const struct afs_acl *, | |
993 | struct afs_status_cb *); | |
260f082b | 994 | |
3bf0fb6f DH |
995 | /* |
996 | * fs_probe.c | |
997 | */ | |
998 | extern void afs_fileserver_probe_result(struct afs_call *); | |
999 | extern int afs_probe_fileservers(struct afs_net *, struct key *, struct afs_server_list *); | |
1000 | extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long); | |
1001 | ||
1da177e4 LT |
1002 | /* |
1003 | * inode.c | |
1004 | */ | |
a58823ac DH |
1005 | extern void afs_vnode_commit_status(struct afs_fs_cursor *, |
1006 | struct afs_vnode *, | |
1007 | unsigned int, | |
1008 | const afs_dataversion_t *, | |
1009 | struct afs_status_cb *); | |
1010 | extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *); | |
c435ee34 | 1011 | extern int afs_iget5_test(struct inode *, void *); |
4d673da1 | 1012 | extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); |
00d3b7a4 | 1013 | extern struct inode *afs_iget(struct super_block *, struct key *, |
b8359153 | 1014 | struct afs_iget_data *, struct afs_status_cb *, |
b134d687 DH |
1015 | struct afs_cb_interest *, |
1016 | struct afs_vnode *); | |
416351f2 | 1017 | extern void afs_zap_data(struct afs_vnode *); |
c925bd0a | 1018 | extern bool afs_check_validity(struct afs_vnode *); |
260a9803 | 1019 | extern int afs_validate(struct afs_vnode *, struct key *); |
a528d35e | 1020 | extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int); |
31143d5d | 1021 | extern int afs_setattr(struct dentry *, struct iattr *); |
b57922d9 | 1022 | extern void afs_evict_inode(struct inode *); |
bec5eb61 | 1023 | extern int afs_drop_inode(struct inode *); |
1da177e4 LT |
1024 | |
1025 | /* | |
1026 | * main.c | |
1027 | */ | |
0ad53eee | 1028 | extern struct workqueue_struct *afs_wq; |
5b86d4ff | 1029 | extern int afs_net_id; |
f044c884 | 1030 | |
5b86d4ff | 1031 | static inline struct afs_net *afs_net(struct net *net) |
f044c884 | 1032 | { |
5b86d4ff | 1033 | return net_generic(net, afs_net_id); |
f044c884 DH |
1034 | } |
1035 | ||
5b86d4ff | 1036 | static inline struct afs_net *afs_sb2net(struct super_block *sb) |
f044c884 | 1037 | { |
5b86d4ff | 1038 | return afs_net(AFS_FS_S(sb)->net_ns); |
f044c884 DH |
1039 | } |
1040 | ||
5b86d4ff | 1041 | static inline struct afs_net *afs_d2net(struct dentry *dentry) |
f044c884 | 1042 | { |
5b86d4ff | 1043 | return afs_sb2net(dentry->d_sb); |
f044c884 DH |
1044 | } |
1045 | ||
5b86d4ff | 1046 | static inline struct afs_net *afs_i2net(struct inode *inode) |
f044c884 | 1047 | { |
5b86d4ff | 1048 | return afs_sb2net(inode->i_sb); |
f044c884 DH |
1049 | } |
1050 | ||
5b86d4ff | 1051 | static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) |
f044c884 | 1052 | { |
5b86d4ff | 1053 | return afs_i2net(&vnode->vfs_inode); |
f044c884 DH |
1054 | } |
1055 | ||
5b86d4ff | 1056 | static inline struct afs_net *afs_sock2net(struct sock *sk) |
f044c884 | 1057 | { |
5b86d4ff | 1058 | return net_generic(sock_net(sk), afs_net_id); |
f044c884 | 1059 | } |
1da177e4 | 1060 | |
d55b4da4 DH |
1061 | static inline void __afs_stat(atomic_t *s) |
1062 | { | |
1063 | atomic_inc(s); | |
1064 | } | |
1065 | ||
1066 | #define afs_stat_v(vnode, n) __afs_stat(&afs_v2net(vnode)->n) | |
1067 | ||
08e0e7c8 DH |
1068 | /* |
1069 | * misc.c | |
1070 | */ | |
1071 | extern int afs_abort_to_error(u32); | |
4584ae96 | 1072 | extern void afs_prioritise_error(struct afs_error *, int, u32); |
08e0e7c8 | 1073 | |
1da177e4 LT |
1074 | /* |
1075 | * mntpt.c | |
1076 | */ | |
754661f1 | 1077 | extern const struct inode_operations afs_mntpt_inode_operations; |
bec5eb61 | 1078 | extern const struct inode_operations afs_autocell_inode_operations; |
4b6f5d20 | 1079 | extern const struct file_operations afs_mntpt_file_operations; |
1da177e4 | 1080 | |
d18610b0 | 1081 | extern struct vfsmount *afs_d_automount(struct path *); |
08e0e7c8 | 1082 | extern void afs_mntpt_kill_timer(void); |
1da177e4 | 1083 | |
1da177e4 LT |
1084 | /* |
1085 | * proc.c | |
1086 | */ | |
b6cfbeca | 1087 | #ifdef CONFIG_PROC_FS |
f044c884 DH |
1088 | extern int __net_init afs_proc_init(struct afs_net *); |
1089 | extern void __net_exit afs_proc_cleanup(struct afs_net *); | |
5b86d4ff DH |
1090 | extern int afs_proc_cell_setup(struct afs_cell *); |
1091 | extern void afs_proc_cell_remove(struct afs_cell *); | |
6f8880d8 | 1092 | extern void afs_put_sysnames(struct afs_sysnames *); |
b6cfbeca DH |
1093 | #else |
1094 | static inline int afs_proc_init(struct afs_net *net) { return 0; } | |
1095 | static inline void afs_proc_cleanup(struct afs_net *net) {} | |
1096 | static inline int afs_proc_cell_setup(struct afs_cell *cell) { return 0; } | |
1097 | static inline void afs_proc_cell_remove(struct afs_cell *cell) {} | |
1098 | static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {} | |
1099 | #endif | |
1da177e4 | 1100 | |
d2ddc776 DH |
1101 | /* |
1102 | * rotate.c | |
1103 | */ | |
1104 | extern bool afs_begin_vnode_operation(struct afs_fs_cursor *, struct afs_vnode *, | |
20b8391f | 1105 | struct key *, bool); |
d2ddc776 DH |
1106 | extern bool afs_select_fileserver(struct afs_fs_cursor *); |
1107 | extern bool afs_select_current_fileserver(struct afs_fs_cursor *); | |
1108 | extern int afs_end_vnode_operation(struct afs_fs_cursor *); | |
1109 | ||
08e0e7c8 DH |
1110 | /* |
1111 | * rxrpc.c | |
1112 | */ | |
f044c884 | 1113 | extern struct workqueue_struct *afs_async_calls; |
8324f0bc | 1114 | |
f044c884 DH |
1115 | extern int __net_init afs_open_socket(struct afs_net *); |
1116 | extern void __net_exit afs_close_socket(struct afs_net *); | |
1117 | extern void afs_charge_preallocation(struct work_struct *); | |
341f741f | 1118 | extern void afs_put_call(struct afs_call *); |
0b9bf381 DH |
1119 | extern void afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t); |
1120 | extern long afs_wait_for_call_to_complete(struct afs_call *, struct afs_addr_cursor *); | |
f044c884 DH |
1121 | extern struct afs_call *afs_alloc_flat_call(struct afs_net *, |
1122 | const struct afs_call_type *, | |
08e0e7c8 DH |
1123 | size_t, size_t); |
1124 | extern void afs_flat_call_destructor(struct afs_call *); | |
08e0e7c8 | 1125 | extern void afs_send_empty_reply(struct afs_call *); |
b908fe6b | 1126 | extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); |
12bdcf33 | 1127 | extern int afs_extract_data(struct afs_call *, bool); |
160cb957 | 1128 | extern int afs_protocol_error(struct afs_call *, int, enum afs_eproto_cause); |
08e0e7c8 | 1129 | |
20b8391f DH |
1130 | static inline void afs_set_fc_call(struct afs_call *call, struct afs_fs_cursor *fc) |
1131 | { | |
1132 | call->intr = fc->flags & AFS_FS_CURSOR_INTR; | |
a58823ac | 1133 | fc->type = call->type; |
20b8391f DH |
1134 | } |
1135 | ||
12bdcf33 DH |
1136 | static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size) |
1137 | { | |
1138 | call->kvec[0].iov_base = buf; | |
1139 | call->kvec[0].iov_len = size; | |
1140 | iov_iter_kvec(&call->iter, READ, call->kvec, 1, size); | |
1141 | } | |
1142 | ||
1143 | static inline void afs_extract_to_tmp(struct afs_call *call) | |
1144 | { | |
1145 | afs_extract_begin(call, &call->tmp, sizeof(call->tmp)); | |
1146 | } | |
1147 | ||
1148 | static inline void afs_extract_to_tmp64(struct afs_call *call) | |
1149 | { | |
1150 | afs_extract_begin(call, &call->tmp64, sizeof(call->tmp64)); | |
1151 | } | |
1152 | ||
1153 | static inline void afs_extract_discard(struct afs_call *call, size_t size) | |
1154 | { | |
1155 | iov_iter_discard(&call->iter, READ, size); | |
1156 | } | |
1157 | ||
1158 | static inline void afs_extract_to_buf(struct afs_call *call, size_t size) | |
1159 | { | |
1160 | afs_extract_begin(call, call->buffer, size); | |
1161 | } | |
1162 | ||
d001648e | 1163 | static inline int afs_transfer_reply(struct afs_call *call) |
372ee163 | 1164 | { |
12bdcf33 | 1165 | return afs_extract_data(call, false); |
372ee163 DH |
1166 | } |
1167 | ||
98bf40cd DH |
1168 | static inline bool afs_check_call_state(struct afs_call *call, |
1169 | enum afs_call_state state) | |
1170 | { | |
1171 | return READ_ONCE(call->state) == state; | |
1172 | } | |
1173 | ||
1174 | static inline bool afs_set_call_state(struct afs_call *call, | |
1175 | enum afs_call_state from, | |
1176 | enum afs_call_state to) | |
1177 | { | |
1178 | bool ok = false; | |
1179 | ||
1180 | spin_lock_bh(&call->state_lock); | |
1181 | if (call->state == from) { | |
1182 | call->state = to; | |
1183 | trace_afs_call_state(call, from, to, 0, 0); | |
1184 | ok = true; | |
1185 | } | |
1186 | spin_unlock_bh(&call->state_lock); | |
1187 | return ok; | |
1188 | } | |
1189 | ||
1190 | static inline void afs_set_call_complete(struct afs_call *call, | |
1191 | int error, u32 remote_abort) | |
1192 | { | |
1193 | enum afs_call_state state; | |
1194 | bool ok = false; | |
1195 | ||
1196 | spin_lock_bh(&call->state_lock); | |
1197 | state = call->state; | |
1198 | if (state != AFS_CALL_COMPLETE) { | |
1199 | call->abort_code = remote_abort; | |
1200 | call->error = error; | |
1201 | call->state = AFS_CALL_COMPLETE; | |
1202 | trace_afs_call_state(call, state, AFS_CALL_COMPLETE, | |
1203 | error, remote_abort); | |
1204 | ok = true; | |
1205 | } | |
1206 | spin_unlock_bh(&call->state_lock); | |
1207 | if (ok) | |
1208 | trace_afs_call_done(call); | |
1209 | } | |
1210 | ||
00d3b7a4 DH |
1211 | /* |
1212 | * security.c | |
1213 | */ | |
be080a6f | 1214 | extern void afs_put_permits(struct afs_permits *); |
00d3b7a4 | 1215 | extern void afs_clear_permits(struct afs_vnode *); |
a58823ac DH |
1216 | extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int, |
1217 | struct afs_status_cb *); | |
416351f2 | 1218 | extern void afs_zap_permits(struct rcu_head *); |
00d3b7a4 | 1219 | extern struct key *afs_request_key(struct afs_cell *); |
8b6a666a | 1220 | extern struct key *afs_request_key_rcu(struct afs_cell *); |
0fafdc9f | 1221 | extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); |
10556cb2 | 1222 | extern int afs_permission(struct inode *, int); |
be080a6f | 1223 | extern void __exit afs_clean_up_permit_cache(void); |
00d3b7a4 | 1224 | |
08e0e7c8 DH |
1225 | /* |
1226 | * server.c | |
1227 | */ | |
1228 | extern spinlock_t afs_server_peer_lock; | |
1229 | ||
f044c884 DH |
1230 | extern struct afs_server *afs_find_server(struct afs_net *, |
1231 | const struct sockaddr_rxrpc *); | |
d2ddc776 DH |
1232 | extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); |
1233 | extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *); | |
45218193 DH |
1234 | extern struct afs_server *afs_get_server(struct afs_server *, enum afs_server_trace); |
1235 | extern void afs_put_server(struct afs_net *, struct afs_server *, enum afs_server_trace); | |
d2ddc776 DH |
1236 | extern void afs_manage_servers(struct work_struct *); |
1237 | extern void afs_servers_timer(struct timer_list *); | |
f044c884 | 1238 | extern void __net_exit afs_purge_servers(struct afs_net *); |
d2ddc776 | 1239 | extern bool afs_check_server_record(struct afs_fs_cursor *, struct afs_server *); |
08e0e7c8 | 1240 | |
00d3b7a4 | 1241 | /* |
d2ddc776 | 1242 | * server_list.c |
00d3b7a4 | 1243 | */ |
d2ddc776 DH |
1244 | static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist) |
1245 | { | |
1246 | refcount_inc(&slist->usage); | |
1247 | return slist; | |
1248 | } | |
00d3b7a4 | 1249 | |
d2ddc776 DH |
1250 | extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); |
1251 | extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, | |
1252 | struct afs_vldb_entry *, | |
1253 | u8); | |
1254 | extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); | |
08e0e7c8 DH |
1255 | |
1256 | /* | |
d2ddc776 | 1257 | * super.c |
08e0e7c8 | 1258 | */ |
d2ddc776 | 1259 | extern int __init afs_fs_init(void); |
5b86d4ff | 1260 | extern void afs_fs_exit(void); |
08e0e7c8 DH |
1261 | |
1262 | /* | |
d2ddc776 | 1263 | * vlclient.c |
08e0e7c8 | 1264 | */ |
0a5143f2 DH |
1265 | extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *, |
1266 | const char *, int); | |
1267 | extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *, const uuid_t *); | |
0b9bf381 DH |
1268 | extern struct afs_call *afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, |
1269 | struct key *, struct afs_vlserver *, unsigned int); | |
0a5143f2 DH |
1270 | extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *, const uuid_t *); |
1271 | ||
3bf0fb6f DH |
1272 | /* |
1273 | * vl_probe.c | |
1274 | */ | |
1275 | extern void afs_vlserver_probe_result(struct afs_call *); | |
1276 | extern int afs_send_vl_probes(struct afs_net *, struct key *, struct afs_vlserver_list *); | |
1277 | extern int afs_wait_for_vl_probes(struct afs_vlserver_list *, unsigned long); | |
1278 | ||
0a5143f2 DH |
1279 | /* |
1280 | * vl_rotate.c | |
1281 | */ | |
1282 | extern bool afs_begin_vlserver_operation(struct afs_vl_cursor *, | |
1283 | struct afs_cell *, struct key *); | |
1284 | extern bool afs_select_vlserver(struct afs_vl_cursor *); | |
1285 | extern bool afs_select_current_vlserver(struct afs_vl_cursor *); | |
1286 | extern int afs_end_vlserver_operation(struct afs_vl_cursor *); | |
1287 | ||
1288 | /* | |
1289 | * vlserver_list.c | |
1290 | */ | |
1291 | static inline struct afs_vlserver *afs_get_vlserver(struct afs_vlserver *vlserver) | |
1292 | { | |
1293 | atomic_inc(&vlserver->usage); | |
1294 | return vlserver; | |
1295 | } | |
1296 | ||
1297 | static inline struct afs_vlserver_list *afs_get_vlserverlist(struct afs_vlserver_list *vllist) | |
1298 | { | |
1299 | if (vllist) | |
1300 | atomic_inc(&vllist->usage); | |
1301 | return vllist; | |
1302 | } | |
1303 | ||
1304 | extern struct afs_vlserver *afs_alloc_vlserver(const char *, size_t, unsigned short); | |
1305 | extern void afs_put_vlserver(struct afs_net *, struct afs_vlserver *); | |
1306 | extern struct afs_vlserver_list *afs_alloc_vlserver_list(unsigned int); | |
1307 | extern void afs_put_vlserverlist(struct afs_net *, struct afs_vlserver_list *); | |
1308 | extern struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *, | |
1309 | const void *, size_t); | |
08e0e7c8 DH |
1310 | |
1311 | /* | |
1312 | * volume.c | |
1313 | */ | |
d2ddc776 | 1314 | static inline struct afs_volume *__afs_get_volume(struct afs_volume *volume) |
49566f6f DH |
1315 | { |
1316 | if (volume) | |
1317 | atomic_inc(&volume->usage); | |
1318 | return volume; | |
1319 | } | |
08e0e7c8 | 1320 | |
13fcc683 | 1321 | extern struct afs_volume *afs_create_volume(struct afs_fs_context *); |
d2ddc776 DH |
1322 | extern void afs_activate_volume(struct afs_volume *); |
1323 | extern void afs_deactivate_volume(struct afs_volume *); | |
9ed900b1 | 1324 | extern void afs_put_volume(struct afs_cell *, struct afs_volume *); |
d2ddc776 | 1325 | extern int afs_check_volume_status(struct afs_volume *, struct key *); |
08e0e7c8 | 1326 | |
31143d5d DH |
1327 | /* |
1328 | * write.c | |
1329 | */ | |
1330 | extern int afs_set_page_dirty(struct page *); | |
15b4650e NP |
1331 | extern int afs_write_begin(struct file *file, struct address_space *mapping, |
1332 | loff_t pos, unsigned len, unsigned flags, | |
1333 | struct page **pagep, void **fsdata); | |
1334 | extern int afs_write_end(struct file *file, struct address_space *mapping, | |
1335 | loff_t pos, unsigned len, unsigned copied, | |
1336 | struct page *page, void *fsdata); | |
31143d5d DH |
1337 | extern int afs_writepage(struct page *, struct writeback_control *); |
1338 | extern int afs_writepages(struct address_space *, struct writeback_control *); | |
50b5551d | 1339 | extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); |
02c24a82 | 1340 | extern int afs_fsync(struct file *, loff_t, loff_t, int); |
0722f186 | 1341 | extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf); |
4343d008 DH |
1342 | extern void afs_prune_wb_keys(struct afs_vnode *); |
1343 | extern int afs_launder_page(struct page *); | |
31143d5d | 1344 | |
d3e3b7ea DH |
1345 | /* |
1346 | * xattr.c | |
1347 | */ | |
1348 | extern const struct xattr_handler *afs_xattr_handlers[]; | |
1349 | extern ssize_t afs_listxattr(struct dentry *, char *, size_t); | |
31143d5d | 1350 | |
30062bd1 DH |
1351 | /* |
1352 | * yfsclient.c | |
1353 | */ | |
a58823ac DH |
1354 | extern int yfs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_status_cb *, |
1355 | struct afs_volsync *); | |
1356 | extern int yfs_fs_fetch_data(struct afs_fs_cursor *, struct afs_status_cb *, struct afs_read *); | |
1357 | extern int yfs_fs_create_file(struct afs_fs_cursor *, const char *, umode_t, struct afs_status_cb *, | |
1358 | struct afs_fid *, struct afs_status_cb *); | |
1359 | extern int yfs_fs_make_dir(struct afs_fs_cursor *, const char *, umode_t, struct afs_status_cb *, | |
1360 | struct afs_fid *, struct afs_status_cb *); | |
1361 | extern int yfs_fs_remove_file2(struct afs_fs_cursor *, struct afs_vnode *, const char *, | |
1362 | struct afs_status_cb *, struct afs_status_cb *); | |
1363 | extern int yfs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool, | |
1364 | struct afs_status_cb *); | |
1365 | extern int yfs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, | |
1366 | struct afs_status_cb *, struct afs_status_cb *); | |
1367 | extern int yfs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, | |
1368 | struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *); | |
1369 | extern int yfs_fs_rename(struct afs_fs_cursor *, const char *, struct afs_vnode *, const char *, | |
1370 | struct afs_status_cb *, struct afs_status_cb *); | |
30062bd1 | 1371 | extern int yfs_fs_store_data(struct afs_fs_cursor *, struct address_space *, |
a58823ac DH |
1372 | pgoff_t, pgoff_t, unsigned, unsigned, struct afs_status_cb *); |
1373 | extern int yfs_fs_setattr(struct afs_fs_cursor *, struct iattr *, struct afs_status_cb *); | |
30062bd1 | 1374 | extern int yfs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *); |
a58823ac DH |
1375 | extern int yfs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t, struct afs_status_cb *); |
1376 | extern int yfs_fs_extend_lock(struct afs_fs_cursor *, struct afs_status_cb *); | |
1377 | extern int yfs_fs_release_lock(struct afs_fs_cursor *, struct afs_status_cb *); | |
30062bd1 | 1378 | extern int yfs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, |
a58823ac DH |
1379 | struct afs_fid *, struct afs_status_cb *, |
1380 | struct afs_volsync *); | |
30062bd1 | 1381 | extern int yfs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, |
87182759 DH |
1382 | struct afs_fid *, struct afs_status_cb *, |
1383 | unsigned int, struct afs_volsync *); | |
d2ddc776 | 1384 | |
ae46578b DH |
1385 | struct yfs_acl { |
1386 | struct afs_acl *acl; /* Dir/file/symlink ACL */ | |
1387 | struct afs_acl *vol_acl; /* Whole volume ACL */ | |
1388 | u32 inherit_flag; /* True if ACL is inherited from parent dir */ | |
1389 | u32 num_cleaned; /* Number of ACEs removed due to subject removal */ | |
1390 | unsigned int flags; | |
1391 | #define YFS_ACL_WANT_ACL 0x01 /* Set if caller wants ->acl */ | |
1392 | #define YFS_ACL_WANT_VOL_ACL 0x02 /* Set if caller wants ->vol_acl */ | |
1393 | }; | |
1394 | ||
1395 | extern void yfs_free_opaque_acl(struct yfs_acl *); | |
a58823ac DH |
1396 | extern struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *, struct yfs_acl *, |
1397 | struct afs_status_cb *); | |
1398 | extern int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *, const struct afs_acl *, | |
1399 | struct afs_status_cb *); | |
ae46578b | 1400 | |
d2ddc776 DH |
1401 | /* |
1402 | * Miscellaneous inline functions. | |
1403 | */ | |
1404 | static inline struct afs_vnode *AFS_FS_I(struct inode *inode) | |
1405 | { | |
1406 | return container_of(inode, struct afs_vnode, vfs_inode); | |
1407 | } | |
1408 | ||
1409 | static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) | |
1410 | { | |
1411 | return &vnode->vfs_inode; | |
1412 | } | |
1413 | ||
d2ddc776 DH |
1414 | static inline void afs_check_for_remote_deletion(struct afs_fs_cursor *fc, |
1415 | struct afs_vnode *vnode) | |
1416 | { | |
1417 | if (fc->ac.error == -ENOENT) { | |
1418 | set_bit(AFS_VNODE_DELETED, &vnode->flags); | |
051d2525 | 1419 | afs_break_callback(vnode, afs_cb_break_for_deleted); |
d2ddc776 DH |
1420 | } |
1421 | } | |
1422 | ||
f51375cd DH |
1423 | static inline int afs_io_error(struct afs_call *call, enum afs_io_error where) |
1424 | { | |
1425 | trace_afs_io_error(call->debug_id, -EIO, where); | |
1426 | return -EIO; | |
1427 | } | |
1428 | ||
1429 | static inline int afs_bad(struct afs_vnode *vnode, enum afs_file_error where) | |
1430 | { | |
1431 | trace_afs_file_error(vnode, -EIO, where); | |
1432 | return -EIO; | |
1433 | } | |
d2ddc776 | 1434 | |
08e0e7c8 DH |
1435 | /*****************************************************************************/ |
1436 | /* | |
1437 | * debug tracing | |
1438 | */ | |
1439 | extern unsigned afs_debug; | |
1440 | ||
1441 | #define dbgprintk(FMT,...) \ | |
ad16df84 | 1442 | printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) |
08e0e7c8 | 1443 | |
530b6412 HH |
1444 | #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1445 | #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
08e0e7c8 DH |
1446 | #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) |
1447 | ||
1448 | ||
1449 | #if defined(__KDEBUG) | |
1450 | #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) | |
1451 | #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) | |
1452 | #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) | |
1453 | ||
1454 | #elif defined(CONFIG_AFS_DEBUG) | |
1455 | #define AFS_DEBUG_KENTER 0x01 | |
1456 | #define AFS_DEBUG_KLEAVE 0x02 | |
1457 | #define AFS_DEBUG_KDEBUG 0x04 | |
1458 | ||
1459 | #define _enter(FMT,...) \ | |
1460 | do { \ | |
1461 | if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ | |
1462 | kenter(FMT,##__VA_ARGS__); \ | |
1463 | } while (0) | |
1464 | ||
1465 | #define _leave(FMT,...) \ | |
1466 | do { \ | |
1467 | if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ | |
1468 | kleave(FMT,##__VA_ARGS__); \ | |
1469 | } while (0) | |
1470 | ||
1471 | #define _debug(FMT,...) \ | |
1472 | do { \ | |
1473 | if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ | |
1474 | kdebug(FMT,##__VA_ARGS__); \ | |
1475 | } while (0) | |
1476 | ||
1477 | #else | |
12fdff3f DH |
1478 | #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1479 | #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
1480 | #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) | |
08e0e7c8 DH |
1481 | #endif |
1482 | ||
1483 | /* | |
1484 | * debug assertion checking | |
1485 | */ | |
1486 | #if 1 // defined(__KDEBUGALL) | |
1487 | ||
1488 | #define ASSERT(X) \ | |
1489 | do { \ | |
1490 | if (unlikely(!(X))) { \ | |
1491 | printk(KERN_ERR "\n"); \ | |
1492 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
1493 | BUG(); \ | |
1494 | } \ | |
1495 | } while(0) | |
1496 | ||
1497 | #define ASSERTCMP(X, OP, Y) \ | |
1498 | do { \ | |
1499 | if (unlikely(!((X) OP (Y)))) { \ | |
1500 | printk(KERN_ERR "\n"); \ | |
1501 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
1502 | printk(KERN_ERR "%lu " #OP " %lu is false\n", \ | |
1503 | (unsigned long)(X), (unsigned long)(Y)); \ | |
1504 | printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ | |
1505 | (unsigned long)(X), (unsigned long)(Y)); \ | |
1506 | BUG(); \ | |
1507 | } \ | |
1508 | } while(0) | |
1509 | ||
416351f2 DH |
1510 | #define ASSERTRANGE(L, OP1, N, OP2, H) \ |
1511 | do { \ | |
1512 | if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ | |
1513 | printk(KERN_ERR "\n"); \ | |
1514 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
1515 | printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ | |
1516 | (unsigned long)(L), (unsigned long)(N), \ | |
1517 | (unsigned long)(H)); \ | |
1518 | printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ | |
1519 | (unsigned long)(L), (unsigned long)(N), \ | |
1520 | (unsigned long)(H)); \ | |
1521 | BUG(); \ | |
1522 | } \ | |
1523 | } while(0) | |
1524 | ||
08e0e7c8 DH |
1525 | #define ASSERTIF(C, X) \ |
1526 | do { \ | |
1527 | if (unlikely((C) && !(X))) { \ | |
1528 | printk(KERN_ERR "\n"); \ | |
1529 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
1530 | BUG(); \ | |
1531 | } \ | |
1532 | } while(0) | |
1533 | ||
1534 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1535 | do { \ | |
1536 | if (unlikely((C) && !((X) OP (Y)))) { \ | |
1537 | printk(KERN_ERR "\n"); \ | |
1538 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
1539 | printk(KERN_ERR "%lu " #OP " %lu is false\n", \ | |
1540 | (unsigned long)(X), (unsigned long)(Y)); \ | |
1541 | printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ | |
1542 | (unsigned long)(X), (unsigned long)(Y)); \ | |
1543 | BUG(); \ | |
1544 | } \ | |
1545 | } while(0) | |
1546 | ||
1547 | #else | |
1548 | ||
1549 | #define ASSERT(X) \ | |
1550 | do { \ | |
1551 | } while(0) | |
1552 | ||
1553 | #define ASSERTCMP(X, OP, Y) \ | |
1554 | do { \ | |
1555 | } while(0) | |
1556 | ||
416351f2 DH |
1557 | #define ASSERTRANGE(L, OP1, N, OP2, H) \ |
1558 | do { \ | |
1559 | } while(0) | |
1560 | ||
08e0e7c8 DH |
1561 | #define ASSERTIF(C, X) \ |
1562 | do { \ | |
1563 | } while(0) | |
1564 | ||
1565 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1566 | do { \ | |
1567 | } while(0) | |
1568 | ||
1569 | #endif /* __KDEBUGALL */ |