Commit | Line | Data |
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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 | 11 | #include <linux/fs.h> |
5970e15d | 12 | #include <linux/filelock.h> |
1da177e4 | 13 | #include <linux/pagemap.h> |
08e0e7c8 | 14 | #include <linux/rxrpc.h> |
00d3b7a4 | 15 | #include <linux/key.h> |
e8edc6e0 | 16 | #include <linux/workqueue.h> |
00c541ea | 17 | #include <linux/sched.h> |
80e50be4 | 18 | #include <linux/fscache.h> |
e1da0222 | 19 | #include <linux/backing-dev.h> |
ff548773 | 20 | #include <linux/uuid.h> |
0722f186 | 21 | #include <linux/mm_types.h> |
0a5143f2 | 22 | #include <linux/dns_resolver.h> |
f044c884 | 23 | #include <net/net_namespace.h> |
5b86d4ff DH |
24 | #include <net/netns/generic.h> |
25 | #include <net/sock.h> | |
8324f0bc | 26 | #include <net/af_rxrpc.h> |
00c541ea | 27 | |
08e0e7c8 DH |
28 | #include "afs.h" |
29 | #include "afs_vl.h" | |
30 | ||
31 | #define AFS_CELL_MAX_ADDRS 15 | |
32 | ||
31143d5d | 33 | struct pagevec; |
08e0e7c8 | 34 | struct afs_call; |
c4508464 | 35 | struct afs_vnode; |
08e0e7c8 | 36 | |
6c6c1d63 DH |
37 | /* |
38 | * Partial file-locking emulation mode. (The problem being that AFS3 only | |
39 | * allows whole-file locks and no upgrading/downgrading). | |
40 | */ | |
41 | enum afs_flock_mode { | |
42 | afs_flock_mode_unset, | |
43 | afs_flock_mode_local, /* Local locking only */ | |
44 | afs_flock_mode_openafs, /* Don't get server lock for a partial lock */ | |
45 | afs_flock_mode_strict, /* Always get a server lock for a partial lock */ | |
46 | afs_flock_mode_write, /* Get an exclusive server lock for a partial lock */ | |
47 | }; | |
48 | ||
13fcc683 | 49 | struct afs_fs_context { |
00d3b7a4 | 50 | bool force; /* T to force cell type */ |
bec5eb61 | 51 | bool autocell; /* T if set auto mount operation */ |
4d673da1 | 52 | bool dyn_root; /* T if dynamic root */ |
13fcc683 | 53 | bool no_cell; /* T if the source is "none" (for dynroot) */ |
6c6c1d63 | 54 | enum afs_flock_mode flock_mode; /* Partial file-locking emulation mode */ |
00d3b7a4 | 55 | afs_voltype_t type; /* type of volume requested */ |
13fcc683 | 56 | unsigned int volnamesz; /* size of volume name */ |
00d3b7a4 | 57 | const char *volname; /* name of volume to mount */ |
5b86d4ff | 58 | struct afs_net *net; /* the AFS net namespace stuff */ |
00d3b7a4 DH |
59 | struct afs_cell *cell; /* cell in which to find volume */ |
60 | struct afs_volume *volume; /* volume record */ | |
61 | struct key *key; /* key to use for secure mounting */ | |
62 | }; | |
63 | ||
8e8d7f13 | 64 | enum afs_call_state { |
98bf40cd DH |
65 | AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */ |
66 | AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */ | |
67 | AFS_CALL_CL_PROC_REPLY, /* Client: rxrpc call complete; processing reply */ | |
68 | AFS_CALL_SV_AWAIT_OP_ID, /* Server: Awaiting op ID */ | |
69 | AFS_CALL_SV_AWAIT_REQUEST, /* Server: Awaiting request data */ | |
70 | AFS_CALL_SV_REPLYING, /* Server: Replying */ | |
71 | AFS_CALL_SV_AWAIT_ACK, /* Server: Awaiting final ACK */ | |
72 | AFS_CALL_COMPLETE, /* Completed or failed */ | |
8e8d7f13 | 73 | }; |
f044c884 | 74 | |
8b2a464c DH |
75 | /* |
76 | * List of server addresses. | |
77 | */ | |
78 | struct afs_addr_list { | |
ddd2b85f | 79 | struct rcu_head rcu; |
8b2a464c | 80 | refcount_t usage; |
d2ddc776 | 81 | u32 version; /* Version */ |
68eb64c3 DH |
82 | unsigned char max_addrs; |
83 | unsigned char nr_addrs; | |
3bf0fb6f | 84 | unsigned char preferred; /* Preferred address */ |
68eb64c3 | 85 | unsigned char nr_ipv4; /* Number of IPv4 addresses */ |
0a5143f2 DH |
86 | enum dns_record_source source:8; |
87 | enum dns_lookup_status status:8; | |
3bf0fb6f DH |
88 | unsigned long failed; /* Mask of addrs that failed locally/ICMP */ |
89 | unsigned long responded; /* Mask of addrs that responded */ | |
8b2a464c | 90 | struct sockaddr_rxrpc addrs[]; |
68eb64c3 | 91 | #define AFS_MAX_ADDRESSES ((unsigned int)(sizeof(unsigned long) * 8)) |
8b2a464c DH |
92 | }; |
93 | ||
08e0e7c8 DH |
94 | /* |
95 | * a record of an in-progress RxRPC call | |
96 | */ | |
97 | struct afs_call { | |
98 | const struct afs_call_type *type; /* type of call */ | |
3bf0fb6f | 99 | struct afs_addr_list *alist; /* Address is alist[addr_ix] */ |
08e0e7c8 | 100 | wait_queue_head_t waitq; /* processes awaiting completion */ |
341f741f | 101 | struct work_struct async_work; /* async I/O processor */ |
08e0e7c8 | 102 | struct work_struct work; /* actual work processor */ |
08e0e7c8 DH |
103 | struct rxrpc_call *rxcall; /* RxRPC call handle */ |
104 | struct key *key; /* security for this call */ | |
f044c884 | 105 | struct afs_net *net; /* The network namespace */ |
a6853b9c DH |
106 | struct afs_server *server; /* The fileserver record if fs op (pins ref) */ |
107 | struct afs_vlserver *vlserver; /* The vlserver record if vl op */ | |
08e0e7c8 | 108 | void *request; /* request data (first part) */ |
f105da1a | 109 | size_t iov_len; /* Size of *iter to be used */ |
fc276122 | 110 | struct iov_iter def_iter; /* Default buffer/data iterator */ |
bd80d8a8 | 111 | struct iov_iter *write_iter; /* Iterator defining write to be made */ |
fc276122 DH |
112 | struct iov_iter *iter; /* Iterator currently in use */ |
113 | union { /* Convenience for ->def_iter */ | |
12bdcf33 DH |
114 | struct kvec kvec[1]; |
115 | struct bio_vec bvec[1]; | |
116 | }; | |
08e0e7c8 | 117 | void *buffer; /* reply receive buffer */ |
ffba718e DH |
118 | union { |
119 | long ret0; /* Value to reply with instead of 0 */ | |
120 | struct afs_addr_list *ret_alist; | |
121 | struct afs_vldb_entry *ret_vldb; | |
c3e9f888 | 122 | char *ret_str; |
ffba718e | 123 | }; |
e49c7b2f | 124 | struct afs_operation *op; |
ffba718e | 125 | unsigned int server_index; |
c56f9ec8 | 126 | refcount_t ref; |
8e8d7f13 | 127 | enum afs_call_state state; |
98bf40cd | 128 | spinlock_t state_lock; |
08e0e7c8 | 129 | int error; /* error code */ |
d001648e | 130 | u32 abort_code; /* Remote abort ID or 0 */ |
94f699c9 | 131 | unsigned int max_lifespan; /* Maximum lifespan to set if not 0 */ |
08e0e7c8 DH |
132 | unsigned request_size; /* size of request data */ |
133 | unsigned reply_max; /* maximum size of reply */ | |
e49c7b2f | 134 | unsigned count2; /* count used in unmarshalling */ |
08e0e7c8 | 135 | unsigned char unmarshall; /* unmarshalling phase */ |
3bf0fb6f | 136 | unsigned char addr_ix; /* Address in ->alist */ |
dde9f095 | 137 | bool drop_ref; /* T if need to drop ref for incoming call */ |
d001648e | 138 | bool need_attention; /* T if RxRPC poked us */ |
56ff9c83 | 139 | bool async; /* T if asynchronous */ |
a68f4a27 | 140 | bool upgrade; /* T to request service upgrade */ |
20b8391f | 141 | bool intr; /* T if interruptible */ |
38355eec | 142 | bool unmarshalling_error; /* T if an unmarshalling error occurred */ |
bf99a53c | 143 | u16 service_id; /* Actual service ID (after upgrade) */ |
a25e21f0 | 144 | unsigned int debug_id; /* Trace ID */ |
50a2c953 | 145 | u32 operation_ID; /* operation ID for an incoming call */ |
08e0e7c8 | 146 | u32 count; /* count for use in unmarshalling */ |
12bdcf33 DH |
147 | union { /* place to extract temporary data */ |
148 | struct { | |
149 | __be32 tmp_u; | |
150 | __be32 tmp; | |
151 | } __attribute__((packed)); | |
152 | __be64 tmp64; | |
153 | }; | |
7903192c | 154 | ktime_t issue_time; /* Time of issue of operation */ |
08e0e7c8 DH |
155 | }; |
156 | ||
157 | struct afs_call_type { | |
00d3b7a4 | 158 | const char *name; |
025db80c | 159 | unsigned int op; /* Really enum afs_fs_operation */ |
00d3b7a4 | 160 | |
08e0e7c8 DH |
161 | /* deliver request or reply data to an call |
162 | * - returning an error will cause the call to be aborted | |
163 | */ | |
d001648e | 164 | int (*deliver)(struct afs_call *call); |
08e0e7c8 | 165 | |
08e0e7c8 DH |
166 | /* clean up a call */ |
167 | void (*destructor)(struct afs_call *call); | |
341f741f DH |
168 | |
169 | /* Work function */ | |
170 | void (*work)(struct work_struct *work); | |
3bf0fb6f DH |
171 | |
172 | /* Call done function (gets called immediately on success or failure) */ | |
173 | void (*done)(struct afs_call *call); | |
08e0e7c8 DH |
174 | }; |
175 | ||
4343d008 DH |
176 | /* |
177 | * Key available for writeback on a file. | |
178 | */ | |
179 | struct afs_wb_key { | |
180 | refcount_t usage; | |
181 | struct key *key; | |
182 | struct list_head vnode_link; /* Link in vnode->wb_keys */ | |
183 | }; | |
184 | ||
215804a9 DH |
185 | /* |
186 | * AFS open file information record. Pointed to by file->private_data. | |
187 | */ | |
188 | struct afs_file { | |
189 | struct key *key; /* The key this file was opened with */ | |
4343d008 | 190 | struct afs_wb_key *wb; /* Writeback key record for this file */ |
215804a9 DH |
191 | }; |
192 | ||
193 | static inline struct key *afs_file_key(struct file *file) | |
194 | { | |
195 | struct afs_file *af = file->private_data; | |
196 | ||
197 | return af->key; | |
198 | } | |
199 | ||
196ee9cd DH |
200 | /* |
201 | * Record of an outstanding read operation on a vnode. | |
202 | */ | |
203 | struct afs_read { | |
204 | loff_t pos; /* Where to start reading */ | |
e8e581a8 | 205 | loff_t len; /* How much we're asking for */ |
196ee9cd | 206 | loff_t actual_len; /* How much we're actually getting */ |
f3ddee8d | 207 | loff_t file_size; /* File size returned by server */ |
c69bf479 | 208 | struct key *key; /* The key to use to reissue the read */ |
c4508464 | 209 | struct afs_vnode *vnode; /* The file being read into. */ |
6a19114b | 210 | struct netfs_io_subrequest *subreq; /* Fscache helper read request this belongs to */ |
f3ddee8d DH |
211 | afs_dataversion_t data_version; /* Version number returned by server */ |
212 | refcount_t usage; | |
c4508464 | 213 | unsigned int call_debug_id; |
196ee9cd | 214 | unsigned int nr_pages; |
c4508464 DH |
215 | int error; |
216 | void (*done)(struct afs_read *); | |
217 | void (*cleanup)(struct afs_read *); | |
218 | struct iov_iter *iter; /* Iterator representing the buffer */ | |
219 | struct iov_iter def_iter; /* Default iterator */ | |
196ee9cd DH |
220 | }; |
221 | ||
08e0e7c8 DH |
222 | /* |
223 | * AFS superblock private data | |
224 | * - there's one superblock per volume | |
225 | */ | |
226 | struct afs_super_info { | |
5b86d4ff | 227 | struct net *net_ns; /* Network namespace */ |
49566f6f | 228 | struct afs_cell *cell; /* The cell in which the volume resides */ |
08e0e7c8 | 229 | struct afs_volume *volume; /* volume record */ |
6c6c1d63 | 230 | enum afs_flock_mode flock_mode:8; /* File locking emulation mode */ |
4d673da1 | 231 | bool dyn_root; /* True if dynamic root */ |
08e0e7c8 | 232 | }; |
1da177e4 | 233 | |
08e0e7c8 DH |
234 | static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) |
235 | { | |
236 | return sb->s_fs_info; | |
1da177e4 LT |
237 | } |
238 | ||
08e0e7c8 DH |
239 | extern struct file_system_type afs_fs_type; |
240 | ||
6f8880d8 DH |
241 | /* |
242 | * Set of substitutes for @sys. | |
243 | */ | |
244 | struct afs_sysnames { | |
245 | #define AFS_NR_SYSNAME 16 | |
246 | char *subs[AFS_NR_SYSNAME]; | |
247 | refcount_t usage; | |
248 | unsigned short nr; | |
6f8880d8 DH |
249 | char blank[1]; |
250 | }; | |
251 | ||
f044c884 DH |
252 | /* |
253 | * AFS network namespace record. | |
254 | */ | |
255 | struct afs_net { | |
5b86d4ff | 256 | struct net *net; /* Backpointer to the owning net namespace */ |
f044c884 DH |
257 | struct afs_uuid uuid; |
258 | bool live; /* F if this namespace is being removed */ | |
259 | ||
260 | /* AF_RXRPC I/O stuff */ | |
261 | struct socket *socket; | |
262 | struct afs_call *spare_incoming_call; | |
263 | struct work_struct charge_preallocation_work; | |
264 | struct mutex socket_mutex; | |
265 | atomic_t nr_outstanding_calls; | |
266 | atomic_t nr_superblocks; | |
267 | ||
268 | /* Cell database */ | |
989782dc | 269 | struct rb_root cells; |
92e3cc91 | 270 | struct afs_cell *ws_cell; |
989782dc DH |
271 | struct work_struct cells_manager; |
272 | struct timer_list cells_timer; | |
273 | atomic_t cells_outstanding; | |
92e3cc91 | 274 | struct rw_semaphore cells_lock; |
8a070a96 | 275 | struct mutex cells_alias_lock; |
f044c884 | 276 | |
0da0b7fd | 277 | struct mutex proc_cells_lock; |
6b3944e4 | 278 | struct hlist_head proc_cells; |
f044c884 | 279 | |
d2ddc776 DH |
280 | /* Known servers. Theoretically each fileserver can only be in one |
281 | * cell, but in practice, people create aliases and subsets and there's | |
282 | * no easy way to distinguish them. | |
283 | */ | |
f6cbb368 | 284 | seqlock_t fs_lock; /* For fs_servers, fs_probe_*, fs_proc */ |
d2ddc776 | 285 | struct rb_root fs_servers; /* afs_server (by server UUID or address) */ |
f6cbb368 DH |
286 | struct list_head fs_probe_fast; /* List of afs_server to probe at 30s intervals */ |
287 | struct list_head fs_probe_slow; /* List of afs_server to probe at 5m intervals */ | |
d2ddc776 | 288 | struct hlist_head fs_proc; /* procfs servers list */ |
f044c884 | 289 | |
d2ddc776 DH |
290 | struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */ |
291 | struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */ | |
292 | seqlock_t fs_addr_lock; /* For fs_addresses[46] */ | |
f044c884 | 293 | |
d2ddc776 DH |
294 | struct work_struct fs_manager; |
295 | struct timer_list fs_timer; | |
f6cbb368 DH |
296 | |
297 | struct work_struct fs_prober; | |
298 | struct timer_list fs_probe_timer; | |
59fa1c4a | 299 | atomic_t servers_outstanding; |
f044c884 | 300 | |
d2ddc776 DH |
301 | /* File locking renewal management */ |
302 | struct mutex lock_manager_mutex; | |
303 | ||
f044c884 | 304 | /* Misc */ |
0da0b7fd | 305 | struct super_block *dynroot_sb; /* Dynamic root mount superblock */ |
d55b4da4 | 306 | struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ |
6f8880d8 DH |
307 | struct afs_sysnames *sysnames; |
308 | rwlock_t sysnames_lock; | |
d55b4da4 DH |
309 | |
310 | /* Statistics counters */ | |
311 | atomic_t n_lookup; /* Number of lookups done */ | |
312 | atomic_t n_reval; /* Number of dentries needing revalidation */ | |
313 | atomic_t n_inval; /* Number of invalidations by the server */ | |
508cae68 | 314 | atomic_t n_relpg; /* Number of invalidations by release_folio */ |
d55b4da4 | 315 | atomic_t n_read_dir; /* Number of directory pages read */ |
63a4681f DH |
316 | atomic_t n_dir_cr; /* Number of directory entry creation edits */ |
317 | atomic_t n_dir_rm; /* Number of directory entry removal edits */ | |
76a5cb6f DH |
318 | atomic_t n_stores; /* Number of store ops */ |
319 | atomic_long_t n_store_bytes; /* Number of bytes stored */ | |
320 | atomic_long_t n_fetch_bytes; /* Number of bytes fetched */ | |
321 | atomic_t n_fetches; /* Number of data fetch ops */ | |
f044c884 DH |
322 | }; |
323 | ||
6f8880d8 | 324 | extern const char afs_init_sysname[]; |
f044c884 | 325 | |
989782dc DH |
326 | enum afs_cell_state { |
327 | AFS_CELL_UNSET, | |
328 | AFS_CELL_ACTIVATING, | |
329 | AFS_CELL_ACTIVE, | |
330 | AFS_CELL_DEACTIVATING, | |
331 | AFS_CELL_INACTIVE, | |
332 | AFS_CELL_FAILED, | |
1d0e850a | 333 | AFS_CELL_REMOVED, |
989782dc DH |
334 | }; |
335 | ||
08e0e7c8 | 336 | /* |
d2ddc776 DH |
337 | * AFS cell record. |
338 | * | |
339 | * This is a tricky concept to get right as it is possible to create aliases | |
340 | * simply by pointing AFSDB/SRV records for two names at the same set of VL | |
341 | * servers; it is also possible to do things like setting up two sets of VL | |
342 | * servers, one of which provides a superset of the volumes provided by the | |
343 | * other (for internal/external division, for example). | |
344 | * | |
345 | * Cells only exist in the sense that (a) a cell's name maps to a set of VL | |
346 | * servers and (b) a cell's name is used by the client to select the key to use | |
347 | * for authentication and encryption. The cell name is not typically used in | |
348 | * the protocol. | |
349 | * | |
8a070a96 DH |
350 | * Two cells are determined to be aliases if they have an explicit alias (YFS |
351 | * only), share any VL servers in common or have at least one volume in common. | |
352 | * "In common" means that the address list of the VL servers or the fileservers | |
353 | * share at least one endpoint. | |
08e0e7c8 DH |
354 | */ |
355 | struct afs_cell { | |
989782dc DH |
356 | union { |
357 | struct rcu_head rcu; | |
358 | struct rb_node net_node; /* Node in net->cells */ | |
359 | }; | |
360 | struct afs_net *net; | |
8a070a96 DH |
361 | struct afs_cell *alias_of; /* The cell this is an alias of */ |
362 | struct afs_volume *root_volume; /* The root.cell volume if there is one */ | |
00d3b7a4 | 363 | struct key *anonymous_key; /* anonymous user key for this cell */ |
989782dc | 364 | struct work_struct manager; /* Manager for init/deinit/dns */ |
6b3944e4 | 365 | struct hlist_node proc_link; /* /proc cell list link */ |
989782dc DH |
366 | time64_t dns_expiry; /* Time AFSDB/SRV record expires */ |
367 | time64_t last_inactive; /* Time of last drop of usage count */ | |
c56f9ec8 | 368 | refcount_t ref; /* Struct refcount */ |
88c853c3 | 369 | atomic_t active; /* Active usage counter */ |
989782dc | 370 | unsigned long flags; |
d5c32c89 DH |
371 | #define AFS_CELL_FL_NO_GC 0 /* The cell was added manually, don't auto-gc */ |
372 | #define AFS_CELL_FL_DO_LOOKUP 1 /* DNS lookup requested */ | |
8a070a96 | 373 | #define AFS_CELL_FL_CHECK_ALIAS 2 /* Need to check for aliases */ |
989782dc DH |
374 | enum afs_cell_state state; |
375 | short error; | |
d5c32c89 DH |
376 | enum dns_record_source dns_source:8; /* Latest source of data from lookup */ |
377 | enum dns_lookup_status dns_status:8; /* Latest status of data from lookup */ | |
378 | unsigned int dns_lookup_count; /* Counter of DNS lookups */ | |
dca54a7b | 379 | unsigned int debug_id; |
989782dc | 380 | |
20325960 DH |
381 | /* The volumes belonging to this cell */ |
382 | struct rb_root volumes; /* Tree of volumes on this server */ | |
383 | struct hlist_head proc_volumes; /* procfs volume list */ | |
384 | seqlock_t volume_lock; /* For volumes */ | |
385 | ||
d2ddc776 | 386 | /* Active fileserver interaction state. */ |
20325960 DH |
387 | struct rb_root fs_servers; /* afs_server (by server UUID) */ |
388 | seqlock_t fs_lock; /* For fs_servers */ | |
6e0e99d5 DH |
389 | struct rw_semaphore fs_open_mmaps_lock; |
390 | struct list_head fs_open_mmaps; /* List of vnodes that are mmapped */ | |
4fe6a946 | 391 | atomic_t fs_s_break; /* Counter of CB.InitCallBackState messages */ |
989782dc | 392 | |
d2ddc776 | 393 | /* VL server list. */ |
0a5143f2 DH |
394 | rwlock_t vl_servers_lock; /* Lock on vl_servers */ |
395 | struct afs_vlserver_list __rcu *vl_servers; | |
396 | ||
989782dc | 397 | u8 name_len; /* Length of name */ |
719fdd32 | 398 | char *name; /* Cell name, case-flattened and NUL-padded */ |
08e0e7c8 DH |
399 | }; |
400 | ||
0a5143f2 DH |
401 | /* |
402 | * Volume Location server record. | |
403 | */ | |
404 | struct afs_vlserver { | |
405 | struct rcu_head rcu; | |
406 | struct afs_addr_list __rcu *addresses; /* List of addresses for this VL server */ | |
407 | unsigned long flags; | |
408 | #define AFS_VLSERVER_FL_PROBED 0 /* The VL server has been probed */ | |
409 | #define AFS_VLSERVER_FL_PROBING 1 /* VL server is being probed */ | |
3bf0fb6f | 410 | #define AFS_VLSERVER_FL_IS_YFS 2 /* Server is YFS not AFS */ |
b95b3094 | 411 | #define AFS_VLSERVER_FL_RESPONDING 3 /* VL server is responding */ |
0a5143f2 | 412 | rwlock_t lock; /* Lock on addresses */ |
c56f9ec8 | 413 | refcount_t ref; |
b95b3094 | 414 | unsigned int rtt; /* Server's current RTT in uS */ |
3bf0fb6f DH |
415 | |
416 | /* Probe state */ | |
417 | wait_queue_head_t probe_wq; | |
418 | atomic_t probe_outstanding; | |
419 | spinlock_t probe_lock; | |
420 | struct { | |
b95b3094 | 421 | unsigned int rtt; /* RTT in uS */ |
3bf0fb6f DH |
422 | u32 abort_code; |
423 | short error; | |
fb72cd3d DH |
424 | unsigned short flags; |
425 | #define AFS_VLSERVER_PROBE_RESPONDED 0x01 /* At least once response (may be abort) */ | |
426 | #define AFS_VLSERVER_PROBE_IS_YFS 0x02 /* The peer appears to be YFS */ | |
427 | #define AFS_VLSERVER_PROBE_NOT_YFS 0x04 /* The peer appears not to be YFS */ | |
428 | #define AFS_VLSERVER_PROBE_LOCAL_FAILURE 0x08 /* A local failure prevented a probe */ | |
3bf0fb6f DH |
429 | } probe; |
430 | ||
0a5143f2 | 431 | u16 port; |
3bf0fb6f | 432 | u16 name_len; /* Length of name */ |
0a5143f2 DH |
433 | char name[]; /* Server name, case-flattened */ |
434 | }; | |
435 | ||
436 | /* | |
437 | * Weighted list of Volume Location servers. | |
438 | */ | |
439 | struct afs_vlserver_entry { | |
440 | u16 priority; /* Preference (as SRV) */ | |
441 | u16 weight; /* Weight (as SRV) */ | |
442 | enum dns_record_source source:8; | |
443 | enum dns_lookup_status status:8; | |
444 | struct afs_vlserver *server; | |
445 | }; | |
446 | ||
447 | struct afs_vlserver_list { | |
448 | struct rcu_head rcu; | |
c56f9ec8 | 449 | refcount_t ref; |
0a5143f2 DH |
450 | u8 nr_servers; |
451 | u8 index; /* Server currently in use */ | |
3bf0fb6f | 452 | u8 preferred; /* Preferred server */ |
0a5143f2 DH |
453 | enum dns_record_source source:8; |
454 | enum dns_lookup_status status:8; | |
455 | rwlock_t lock; | |
456 | struct afs_vlserver_entry servers[]; | |
457 | }; | |
458 | ||
08e0e7c8 | 459 | /* |
d2ddc776 DH |
460 | * Cached VLDB entry. |
461 | * | |
462 | * This is pointed to by cell->vldb_entries, indexed by name. | |
08e0e7c8 | 463 | */ |
d2ddc776 DH |
464 | struct afs_vldb_entry { |
465 | afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */ | |
00d3b7a4 | 466 | |
d2ddc776 DH |
467 | unsigned long flags; |
468 | #define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */ | |
469 | #define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */ | |
470 | #define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */ | |
471 | #define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */ | |
472 | #define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */ | |
473 | ||
474 | uuid_t fs_server[AFS_NMAXNSERVERS]; | |
81006805 | 475 | u32 addr_version[AFS_NMAXNSERVERS]; /* Registration change counters */ |
d2ddc776 | 476 | u8 fs_mask[AFS_NMAXNSERVERS]; |
08e0e7c8 DH |
477 | #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ |
478 | #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ | |
479 | #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ | |
d2ddc776 DH |
480 | short error; |
481 | u8 nr_servers; /* Number of server records */ | |
482 | u8 name_len; | |
483 | u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ | |
08e0e7c8 DH |
484 | }; |
485 | ||
486 | /* | |
d2ddc776 | 487 | * Record of fileserver with which we're actively communicating. |
08e0e7c8 DH |
488 | */ |
489 | struct afs_server { | |
d2ddc776 DH |
490 | struct rcu_head rcu; |
491 | union { | |
492 | uuid_t uuid; /* Server ID */ | |
493 | struct afs_uuid _uuid; | |
494 | }; | |
495 | ||
496 | struct afs_addr_list __rcu *addresses; | |
20325960 | 497 | struct afs_cell *cell; /* Cell to which belongs (pins ref) */ |
3c4c4075 DH |
498 | struct rb_node uuid_rb; /* Link in net->fs_servers */ |
499 | struct afs_server __rcu *uuid_next; /* Next server with same UUID */ | |
500 | struct afs_server *uuid_prev; /* Previous server with same UUID */ | |
f6cbb368 | 501 | struct list_head probe_link; /* Link in net->fs_probe_list */ |
d2ddc776 DH |
502 | struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ |
503 | struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ | |
504 | struct hlist_node proc_link; /* Link in net->fs_proc */ | |
6e0e99d5 | 505 | struct work_struct initcb_work; /* Work for CB.InitCallBackState* */ |
d2ddc776 | 506 | struct afs_server *gc_next; /* Next server in manager's list */ |
977e5f8e | 507 | time64_t unuse_time; /* Time at which last unused */ |
c435ee34 | 508 | unsigned long flags; |
f3c130e6 | 509 | #define AFS_SERVER_FL_RESPONDING 0 /* The server is responding */ |
32275d3f DH |
510 | #define AFS_SERVER_FL_UPDATING 1 |
511 | #define AFS_SERVER_FL_NEEDS_UPDATE 2 /* Fileserver address list is out of date */ | |
512 | #define AFS_SERVER_FL_NOT_READY 4 /* The record is not ready for use */ | |
513 | #define AFS_SERVER_FL_NOT_FOUND 5 /* VL server says no such server */ | |
514 | #define AFS_SERVER_FL_VL_FAIL 6 /* Failed to access VL server */ | |
f2686b09 | 515 | #define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */ |
32275d3f DH |
516 | #define AFS_SERVER_FL_IS_YFS 16 /* Server is YFS not AFS */ |
517 | #define AFS_SERVER_FL_NO_IBULK 17 /* Fileserver doesn't support FS.InlineBulkStatus */ | |
518 | #define AFS_SERVER_FL_NO_RM2 18 /* Fileserver doesn't support YFS.RemoveFile2 */ | |
b537a3c2 | 519 | #define AFS_SERVER_FL_HAS_FS64 19 /* Fileserver supports FS.{Fetch,Store}Data64 */ |
c56f9ec8 | 520 | refcount_t ref; /* Object refcount */ |
977e5f8e | 521 | atomic_t active; /* Active user count */ |
d2ddc776 | 522 | u32 addr_version; /* Address list version */ |
f3c130e6 | 523 | unsigned int rtt; /* Server's current RTT in uS */ |
45218193 | 524 | unsigned int debug_id; /* Debugging ID for traces */ |
08e0e7c8 DH |
525 | |
526 | /* file service access */ | |
d2ddc776 | 527 | rwlock_t fs_lock; /* access lock */ |
08e0e7c8 DH |
528 | |
529 | /* callback promise management */ | |
c435ee34 | 530 | unsigned cb_s_break; /* Break-everything counter. */ |
3bf0fb6f DH |
531 | |
532 | /* Probe state */ | |
f6cbb368 | 533 | unsigned long probed_at; /* Time last probe was dispatched (jiffies) */ |
3bf0fb6f DH |
534 | wait_queue_head_t probe_wq; |
535 | atomic_t probe_outstanding; | |
536 | spinlock_t probe_lock; | |
537 | struct { | |
f3c130e6 | 538 | unsigned int rtt; /* RTT in uS */ |
3bf0fb6f | 539 | u32 abort_code; |
3bf0fb6f | 540 | short error; |
3bf0fb6f DH |
541 | bool responded:1; |
542 | bool is_yfs:1; | |
543 | bool not_yfs:1; | |
544 | bool local_failure:1; | |
3bf0fb6f | 545 | } probe; |
c435ee34 DH |
546 | }; |
547 | ||
08e0e7c8 | 548 | /* |
194d28cf | 549 | * Replaceable volume server list. |
d2ddc776 DH |
550 | */ |
551 | struct afs_server_entry { | |
552 | struct afs_server *server; | |
d2ddc776 DH |
553 | }; |
554 | ||
555 | struct afs_server_list { | |
194d28cf | 556 | afs_volid_t vids[AFS_MAXTYPES]; /* Volume IDs */ |
d2ddc776 | 557 | refcount_t usage; |
3bf0fb6f DH |
558 | unsigned char nr_servers; |
559 | unsigned char preferred; /* Preferred server */ | |
d2ddc776 DH |
560 | unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ |
561 | unsigned int seq; /* Set to ->servers_seq when installed */ | |
d4a96bec | 562 | rwlock_t lock; |
d2ddc776 DH |
563 | struct afs_server_entry servers[]; |
564 | }; | |
565 | ||
566 | /* | |
567 | * Live AFS volume management. | |
08e0e7c8 DH |
568 | */ |
569 | struct afs_volume { | |
20325960 DH |
570 | union { |
571 | struct rcu_head rcu; | |
572 | afs_volid_t vid; /* volume ID */ | |
573 | }; | |
c56f9ec8 | 574 | refcount_t ref; |
d2ddc776 DH |
575 | time64_t update_at; /* Time at which to next update */ |
576 | struct afs_cell *cell; /* Cell to which belongs (pins ref) */ | |
20325960 DH |
577 | struct rb_node cell_node; /* Link in cell->volumes */ |
578 | struct hlist_node proc_link; /* Link in cell->proc_volumes */ | |
579 | struct super_block __rcu *sb; /* Superblock on which inodes reside */ | |
d2ddc776 DH |
580 | unsigned long flags; |
581 | #define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */ | |
582 | #define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */ | |
583 | #define AFS_VOLUME_WAIT 2 /* - T if users must wait for update */ | |
584 | #define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */ | |
585 | #define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */ | |
586 | #define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */ | |
20325960 | 587 | #define AFS_VOLUME_MAYBE_NO_IBULK 6 /* - T if some servers don't have InlineBulkStatus */ |
9b3f26c9 | 588 | #ifdef CONFIG_AFS_FSCACHE |
523d27cd | 589 | struct fscache_volume *cache; /* Caching cookie */ |
08e0e7c8 | 590 | #endif |
8a070a96 | 591 | struct afs_server_list __rcu *servers; /* List of servers on which volume resides */ |
d2ddc776 DH |
592 | rwlock_t servers_lock; /* Lock for ->servers */ |
593 | unsigned int servers_seq; /* Incremented each time ->servers changes */ | |
594 | ||
68251f0a | 595 | unsigned cb_v_break; /* Break-everything counter. */ |
90fa9b64 | 596 | rwlock_t cb_v_break_lock; |
68251f0a | 597 | |
08e0e7c8 DH |
598 | afs_voltype_t type; /* type of volume */ |
599 | char type_force; /* force volume type (suppress R/O -> R/W) */ | |
d2ddc776 DH |
600 | u8 name_len; |
601 | u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ | |
08e0e7c8 DH |
602 | }; |
603 | ||
0fafdc9f DH |
604 | enum afs_lock_state { |
605 | AFS_VNODE_LOCK_NONE, /* The vnode has no lock on the server */ | |
606 | AFS_VNODE_LOCK_WAITING_FOR_CB, /* We're waiting for the server to break the callback */ | |
607 | AFS_VNODE_LOCK_SETTING, /* We're asking the server for a lock */ | |
608 | AFS_VNODE_LOCK_GRANTED, /* We have a lock on the server */ | |
609 | AFS_VNODE_LOCK_EXTENDING, /* We're extending a lock on the server */ | |
610 | AFS_VNODE_LOCK_NEED_UNLOCK, /* We need to unlock on the server */ | |
611 | AFS_VNODE_LOCK_UNLOCKING, /* We're telling the server to unlock */ | |
cdfb26b4 | 612 | AFS_VNODE_LOCK_DELETED, /* The vnode has been deleted whilst we have a lock */ |
0fafdc9f DH |
613 | }; |
614 | ||
08e0e7c8 | 615 | /* |
f8de483e DH |
616 | * AFS inode private data. |
617 | * | |
618 | * Note that afs_alloc_inode() *must* reset anything that could incorrectly | |
619 | * leak from one inode to another. | |
08e0e7c8 DH |
620 | */ |
621 | struct afs_vnode { | |
874c8ca1 | 622 | struct netfs_inode netfs; /* Netfslib context and vfs inode */ |
08e0e7c8 | 623 | struct afs_volume *volume; /* volume on which vnode resides */ |
08e0e7c8 DH |
624 | struct afs_fid fid; /* the file identifier for this inode */ |
625 | struct afs_file_status status; /* AFS status info for this file */ | |
a4ff7401 | 626 | afs_dataversion_t invalid_before; /* Child dentries are invalid before this */ |
fe342cf7 | 627 | struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */ |
d2ddc776 | 628 | struct mutex io_lock; /* Lock for serialising I/O on this mutex */ |
b61f7dcf | 629 | struct rw_semaphore validate_lock; /* lock for validating this vnode */ |
79ddbfa5 DH |
630 | struct rw_semaphore rmdir_lock; /* Lock for rmdir vs sillyrename */ |
631 | struct key *silly_key; /* Silly rename key */ | |
4343d008 | 632 | spinlock_t wb_lock; /* lock for wb_keys */ |
08e0e7c8 DH |
633 | spinlock_t lock; /* waitqueue/flags lock */ |
634 | unsigned long flags; | |
c435ee34 | 635 | #define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */ |
260a9803 | 636 | #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ |
f3ddee8d | 637 | #define AFS_VNODE_DIR_VALID 2 /* Set if dir contents are valid */ |
08e0e7c8 DH |
638 | #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ |
639 | #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ | |
640 | #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ | |
0fafdc9f DH |
641 | #define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ |
642 | #define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ | |
5a813276 | 643 | #define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */ |
b6489a49 | 644 | #define AFS_VNODE_SILLY_DELETED 9 /* Set if file has been silly-deleted */ |
22650f14 | 645 | #define AFS_VNODE_MODIFYING 10 /* Set if we're performing a modification op */ |
08e0e7c8 | 646 | |
4343d008 | 647 | struct list_head wb_keys; /* List of keys available for writeback */ |
e8d6c554 DH |
648 | struct list_head pending_locks; /* locks waiting to be granted */ |
649 | struct list_head granted_locks; /* locks granted on this file */ | |
650 | struct delayed_work lock_work; /* work to be done in locking */ | |
0fafdc9f | 651 | struct key *lock_key; /* Key to be used in lock ops */ |
a690f60a | 652 | ktime_t locked_at; /* Time at which lock obtained */ |
0fafdc9f DH |
653 | enum afs_lock_state lock_state : 8; |
654 | afs_lock_type_t lock_type : 8; | |
31143d5d | 655 | |
08e0e7c8 | 656 | /* outstanding callback notification on this file */ |
6e0e99d5 DH |
657 | struct work_struct cb_work; /* Work for mmap'd files */ |
658 | struct list_head cb_mmap_link; /* Link in cell->fs_open_mmaps */ | |
20325960 | 659 | void *cb_server; /* Server with callback/filelock */ |
6e0e99d5 | 660 | atomic_t cb_nr_mmap; /* Number of mmaps */ |
4fe6a946 | 661 | unsigned int cb_fs_s_break; /* Mass server break counter (cell->fs_s_break) */ |
c435ee34 | 662 | unsigned int cb_s_break; /* Mass break counter on ->server */ |
68251f0a | 663 | unsigned int cb_v_break; /* Mass break counter on ->volume */ |
c435ee34 | 664 | unsigned int cb_break; /* Break counter on vnode */ |
20325960 | 665 | seqlock_t cb_lock; /* Lock for ->cb_server, ->status, ->cb_*break */ |
c435ee34 DH |
666 | |
667 | time64_t cb_expires_at; /* time at which callback expires */ | |
08e0e7c8 DH |
668 | }; |
669 | ||
12bdcf33 DH |
670 | static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode) |
671 | { | |
672 | #ifdef CONFIG_AFS_FSCACHE | |
e81fb419 | 673 | return netfs_i_cookie(&vnode->netfs); |
12bdcf33 DH |
674 | #else |
675 | return NULL; | |
676 | #endif | |
677 | } | |
678 | ||
bc899ee1 DH |
679 | static inline void afs_vnode_set_cache(struct afs_vnode *vnode, |
680 | struct fscache_cookie *cookie) | |
681 | { | |
682 | #ifdef CONFIG_AFS_FSCACHE | |
874c8ca1 | 683 | vnode->netfs.cache = cookie; |
bc899ee1 DH |
684 | #endif |
685 | } | |
686 | ||
00d3b7a4 DH |
687 | /* |
688 | * cached security record for one user's attempt to access a vnode | |
689 | */ | |
690 | struct afs_permit { | |
691 | struct key *key; /* RxRPC ticket holding a security context */ | |
be080a6f | 692 | afs_access_t access; /* CallerAccess value for this key */ |
00d3b7a4 DH |
693 | }; |
694 | ||
695 | /* | |
be080a6f DH |
696 | * Immutable cache of CallerAccess records from attempts to access vnodes. |
697 | * These may be shared between multiple vnodes. | |
00d3b7a4 DH |
698 | */ |
699 | struct afs_permits { | |
be080a6f DH |
700 | struct rcu_head rcu; |
701 | struct hlist_node hash_node; /* Link in hash */ | |
702 | unsigned long h; /* Hash value for this permit list */ | |
703 | refcount_t usage; | |
704 | unsigned short nr_permits; /* Number of records */ | |
705 | bool invalidated; /* Invalidated due to key change */ | |
706 | struct afs_permit permits[]; /* List of permits sorted by key pointer */ | |
00d3b7a4 DH |
707 | }; |
708 | ||
4584ae96 DH |
709 | /* |
710 | * Error prioritisation and accumulation. | |
711 | */ | |
712 | struct afs_error { | |
713 | short error; /* Accumulated error */ | |
714 | bool responded; /* T if server responded */ | |
715 | }; | |
716 | ||
8b2a464c DH |
717 | /* |
718 | * Cursor for iterating over a server's address list. | |
719 | */ | |
720 | struct afs_addr_cursor { | |
721 | struct afs_addr_list *alist; /* Current address list (pins ref) */ | |
3bf0fb6f DH |
722 | unsigned long tried; /* Tried addresses */ |
723 | signed char index; /* Current address */ | |
8b2a464c | 724 | bool responded; /* T if the current address responded */ |
744bcd71 | 725 | unsigned short nr_iterations; /* Number of address iterations */ |
3bf0fb6f DH |
726 | short error; |
727 | u32 abort_code; | |
8b2a464c DH |
728 | }; |
729 | ||
0a5143f2 DH |
730 | /* |
731 | * Cursor for iterating over a set of volume location servers. | |
732 | */ | |
733 | struct afs_vl_cursor { | |
734 | struct afs_addr_cursor ac; | |
735 | struct afs_cell *cell; /* The cell we're querying */ | |
736 | struct afs_vlserver_list *server_list; /* Current server list (pins ref) */ | |
3bf0fb6f | 737 | struct afs_vlserver *server; /* Server on which this resides */ |
0a5143f2 | 738 | struct key *key; /* Key for the server */ |
3bf0fb6f DH |
739 | unsigned long untried; /* Bitmask of untried servers */ |
740 | short index; /* Current server */ | |
0a5143f2 DH |
741 | short error; |
742 | unsigned short flags; | |
743 | #define AFS_VL_CURSOR_STOP 0x0001 /* Set to cease iteration */ | |
744 | #define AFS_VL_CURSOR_RETRY 0x0002 /* Set to do a retry */ | |
745 | #define AFS_VL_CURSOR_RETRIED 0x0004 /* Set if started a retry */ | |
744bcd71 | 746 | unsigned short nr_iterations; /* Number of server iterations */ |
0a5143f2 DH |
747 | }; |
748 | ||
8b2a464c | 749 | /* |
e49c7b2f DH |
750 | * Fileserver operation methods. |
751 | */ | |
752 | struct afs_operation_ops { | |
753 | void (*issue_afs_rpc)(struct afs_operation *op); | |
754 | void (*issue_yfs_rpc)(struct afs_operation *op); | |
755 | void (*success)(struct afs_operation *op); | |
756 | void (*aborted)(struct afs_operation *op); | |
dc419184 | 757 | void (*failed)(struct afs_operation *op); |
e49c7b2f DH |
758 | void (*edit_dir)(struct afs_operation *op); |
759 | void (*put)(struct afs_operation *op); | |
760 | }; | |
761 | ||
762 | struct afs_vnode_param { | |
763 | struct afs_vnode *vnode; | |
764 | struct afs_fid fid; /* Fid to access */ | |
765 | struct afs_status_cb scb; /* Returned status and callback promise */ | |
766 | afs_dataversion_t dv_before; /* Data version before the call */ | |
767 | unsigned int cb_break_before; /* cb_break + cb_s_break before the call */ | |
768 | u8 dv_delta; /* Expected change in data version */ | |
793fe82e DH |
769 | bool put_vnode:1; /* T if we have a ref on the vnode */ |
770 | bool need_io_lock:1; /* T if we need the I/O lock on this */ | |
771 | bool update_ctime:1; /* Need to update the ctime */ | |
772 | bool set_size:1; /* Must update i_size */ | |
b6489a49 | 773 | bool op_unlinked:1; /* True if file was unlinked by op */ |
a9e5c87c | 774 | bool speculative:1; /* T if speculative status fetch (no vnode lock) */ |
22650f14 | 775 | bool modification:1; /* Set if the content gets modified */ |
e49c7b2f DH |
776 | }; |
777 | ||
778 | /* | |
779 | * Fileserver operation wrapper, handling server and address rotation | |
780 | * asynchronously. May make simultaneous calls to multiple servers. | |
8b2a464c | 781 | */ |
a310082f | 782 | struct afs_operation { |
e49c7b2f DH |
783 | struct afs_net *net; /* Network namespace */ |
784 | struct key *key; /* Key for the cell */ | |
a58823ac | 785 | const struct afs_call_type *type; /* Type of call done */ |
e49c7b2f DH |
786 | const struct afs_operation_ops *ops; |
787 | ||
788 | /* Parameters/results for the operation */ | |
789 | struct afs_volume *volume; /* Volume being accessed */ | |
790 | struct afs_vnode_param file[2]; | |
791 | struct afs_vnode_param *more_files; | |
792 | struct afs_volsync volsync; | |
793 | struct dentry *dentry; /* Dentry to be altered */ | |
794 | struct dentry *dentry_2; /* Second dentry to be altered */ | |
795 | struct timespec64 mtime; /* Modification time to record */ | |
da8d0755 | 796 | struct timespec64 ctime; /* Change time to set */ |
e49c7b2f DH |
797 | short nr_files; /* Number of entries in file[], more_files */ |
798 | short error; | |
e49c7b2f DH |
799 | unsigned int debug_id; |
800 | ||
801 | unsigned int cb_v_break; /* Volume break counter before op */ | |
802 | unsigned int cb_s_break; /* Server break counter before op */ | |
803 | ||
804 | union { | |
805 | struct { | |
806 | int which; /* Which ->file[] to fetch for */ | |
807 | } fetch_status; | |
808 | struct { | |
809 | int reason; /* enum afs_edit_dir_reason */ | |
810 | mode_t mode; | |
811 | const char *symlink; | |
812 | } create; | |
813 | struct { | |
814 | bool need_rehash; | |
815 | } unlink; | |
816 | struct { | |
817 | struct dentry *rehash; | |
818 | struct dentry *tmp; | |
819 | bool new_negative; | |
820 | } rename; | |
821 | struct { | |
822 | struct afs_read *req; | |
823 | } fetch; | |
824 | struct { | |
e49c7b2f DH |
825 | afs_lock_type_t type; |
826 | } lock; | |
827 | struct { | |
bd80d8a8 DH |
828 | struct iov_iter *write_iter; |
829 | loff_t pos; | |
830 | loff_t size; | |
831 | loff_t i_size; | |
bd80d8a8 | 832 | bool laundering; /* Laundering page, PG_writeback not set */ |
e49c7b2f DH |
833 | } store; |
834 | struct { | |
835 | struct iattr *attr; | |
ec0fa0b6 | 836 | loff_t old_i_size; |
e49c7b2f DH |
837 | } setattr; |
838 | struct afs_acl *acl; | |
839 | struct yfs_acl *yacl; | |
840 | struct { | |
841 | struct afs_volume_status vs; | |
842 | struct kstatfs *buf; | |
843 | } volstatus; | |
844 | }; | |
845 | ||
846 | /* Fileserver iteration state */ | |
8b2a464c | 847 | struct afs_addr_cursor ac; |
d2ddc776 | 848 | struct afs_server_list *server_list; /* Current server list (pins ref) */ |
20325960 | 849 | struct afs_server *server; /* Server we're using (ref pinned by server_list) */ |
e49c7b2f | 850 | struct afs_call *call; |
3bf0fb6f | 851 | unsigned long untried; /* Bitmask of untried servers */ |
3bf0fb6f | 852 | short index; /* Current server */ |
e49c7b2f DH |
853 | unsigned short nr_iterations; /* Number of server iterations */ |
854 | ||
855 | unsigned int flags; | |
8409f67b DH |
856 | #define AFS_OPERATION_STOP 0x0001 /* Set to cease iteration */ |
857 | #define AFS_OPERATION_VBUSY 0x0002 /* Set if seen VBUSY */ | |
858 | #define AFS_OPERATION_VMOVED 0x0004 /* Set if seen VMOVED */ | |
859 | #define AFS_OPERATION_VNOVOL 0x0008 /* Set if seen VNOVOL */ | |
860 | #define AFS_OPERATION_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ | |
861 | #define AFS_OPERATION_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ | |
862 | #define AFS_OPERATION_UNINTR 0x0040 /* Set if op is uninterruptible */ | |
863 | #define AFS_OPERATION_DOWNGRADE 0x0080 /* Set to retry with downgraded opcode */ | |
864 | #define AFS_OPERATION_LOCK_0 0x0100 /* Set if have io_lock on file[0] */ | |
865 | #define AFS_OPERATION_LOCK_1 0x0200 /* Set if have io_lock on file[1] */ | |
866 | #define AFS_OPERATION_TRIED_ALL 0x0400 /* Set if we've tried all the fileservers */ | |
867 | #define AFS_OPERATION_RETRY_SERVER 0x0800 /* Set if we should retry the current server */ | |
b6489a49 | 868 | #define AFS_OPERATION_DIR_CONFLICT 0x1000 /* Set if we detected a 3rd-party dir change */ |
8b2a464c DH |
869 | }; |
870 | ||
402cb8dd DH |
871 | /* |
872 | * Cache auxiliary data. | |
873 | */ | |
874 | struct afs_vnode_cache_aux { | |
523d27cd | 875 | __be64 data_version; |
402cb8dd DH |
876 | } __packed; |
877 | ||
523d27cd DH |
878 | static inline void afs_set_cache_aux(struct afs_vnode *vnode, |
879 | struct afs_vnode_cache_aux *aux) | |
880 | { | |
881 | aux->data_version = cpu_to_be64(vnode->status.data_version); | |
882 | } | |
883 | ||
884 | static inline void afs_invalidate_cache(struct afs_vnode *vnode, unsigned int flags) | |
885 | { | |
886 | struct afs_vnode_cache_aux aux; | |
887 | ||
888 | afs_set_cache_aux(vnode, &aux); | |
889 | fscache_invalidate(afs_vnode_cache(vnode), &aux, | |
874c8ca1 | 890 | i_size_read(&vnode->netfs.inode), flags); |
523d27cd DH |
891 | } |
892 | ||
185f0c70 | 893 | /* |
78525c74 | 894 | * We use folio->private to hold the amount of the folio that we've written to, |
185f0c70 | 895 | * splitting the field into two parts. However, we need to represent a range |
78525c74 | 896 | * 0...FOLIO_SIZE, so we reduce the resolution if the size of the folio |
2d9900f2 | 897 | * exceeds what we can encode. |
185f0c70 | 898 | */ |
65dd2d60 | 899 | #ifdef CONFIG_64BIT |
78525c74 DH |
900 | #define __AFS_FOLIO_PRIV_MASK 0x7fffffffUL |
901 | #define __AFS_FOLIO_PRIV_SHIFT 32 | |
902 | #define __AFS_FOLIO_PRIV_MMAPPED 0x80000000UL | |
185f0c70 | 903 | #else |
78525c74 DH |
904 | #define __AFS_FOLIO_PRIV_MASK 0x7fffUL |
905 | #define __AFS_FOLIO_PRIV_SHIFT 16 | |
906 | #define __AFS_FOLIO_PRIV_MMAPPED 0x8000UL | |
185f0c70 DH |
907 | #endif |
908 | ||
78525c74 | 909 | static inline unsigned int afs_folio_dirty_resolution(struct folio *folio) |
2d9900f2 | 910 | { |
78525c74 | 911 | int shift = folio_shift(folio) - (__AFS_FOLIO_PRIV_SHIFT - 1); |
2d9900f2 DH |
912 | return (shift > 0) ? shift : 0; |
913 | } | |
914 | ||
78525c74 | 915 | static inline size_t afs_folio_dirty_from(struct folio *folio, unsigned long priv) |
185f0c70 | 916 | { |
78525c74 | 917 | unsigned long x = priv & __AFS_FOLIO_PRIV_MASK; |
2d9900f2 DH |
918 | |
919 | /* The lower bound is inclusive */ | |
78525c74 | 920 | return x << afs_folio_dirty_resolution(folio); |
185f0c70 DH |
921 | } |
922 | ||
78525c74 | 923 | static inline size_t afs_folio_dirty_to(struct folio *folio, unsigned long priv) |
185f0c70 | 924 | { |
78525c74 | 925 | unsigned long x = (priv >> __AFS_FOLIO_PRIV_SHIFT) & __AFS_FOLIO_PRIV_MASK; |
2d9900f2 DH |
926 | |
927 | /* The upper bound is immediately beyond the region */ | |
78525c74 | 928 | return (x + 1) << afs_folio_dirty_resolution(folio); |
185f0c70 DH |
929 | } |
930 | ||
78525c74 | 931 | static inline unsigned long afs_folio_dirty(struct folio *folio, size_t from, size_t to) |
185f0c70 | 932 | { |
78525c74 | 933 | unsigned int res = afs_folio_dirty_resolution(folio); |
2d9900f2 DH |
934 | from >>= res; |
935 | to = (to - 1) >> res; | |
78525c74 | 936 | return (to << __AFS_FOLIO_PRIV_SHIFT) | from; |
185f0c70 DH |
937 | } |
938 | ||
78525c74 | 939 | static inline unsigned long afs_folio_dirty_mmapped(unsigned long priv) |
f86726a6 | 940 | { |
78525c74 | 941 | return priv | __AFS_FOLIO_PRIV_MMAPPED; |
f86726a6 DH |
942 | } |
943 | ||
78525c74 | 944 | static inline bool afs_is_folio_dirty_mmapped(unsigned long priv) |
f86726a6 | 945 | { |
78525c74 | 946 | return priv & __AFS_FOLIO_PRIV_MMAPPED; |
f86726a6 DH |
947 | } |
948 | ||
98bf40cd DH |
949 | #include <trace/events/afs.h> |
950 | ||
08e0e7c8 | 951 | /*****************************************************************************/ |
8b2a464c DH |
952 | /* |
953 | * addr_list.c | |
954 | */ | |
955 | static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist) | |
956 | { | |
957 | if (alist) | |
958 | refcount_inc(&alist->usage); | |
959 | return alist; | |
960 | } | |
961 | extern struct afs_addr_list *afs_alloc_addrlist(unsigned int, | |
962 | unsigned short, | |
963 | unsigned short); | |
964 | extern void afs_put_addrlist(struct afs_addr_list *); | |
0a5143f2 DH |
965 | extern struct afs_vlserver_list *afs_parse_text_addrs(struct afs_net *, |
966 | const char *, size_t, char, | |
967 | unsigned short, unsigned short); | |
968 | extern struct afs_vlserver_list *afs_dns_query(struct afs_cell *, time64_t *); | |
8b2a464c DH |
969 | extern bool afs_iterate_addresses(struct afs_addr_cursor *); |
970 | extern int afs_end_cursor(struct afs_addr_cursor *); | |
8b2a464c | 971 | |
bf99a53c DH |
972 | extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16); |
973 | extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16); | |
d2ddc776 | 974 | |
08e0e7c8 DH |
975 | /* |
976 | * callback.c | |
977 | */ | |
6e0e99d5 DH |
978 | extern void afs_invalidate_mmap_work(struct work_struct *); |
979 | extern void afs_server_init_callback_work(struct work_struct *work); | |
08e0e7c8 | 980 | extern void afs_init_callback_state(struct afs_server *); |
051d2525 DH |
981 | extern void __afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); |
982 | extern void afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); | |
983 | extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break *); | |
c435ee34 | 984 | |
68251f0a DH |
985 | static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode) |
986 | { | |
eeba1e9c | 987 | return vnode->cb_break + vnode->cb_v_break; |
68251f0a DH |
988 | } |
989 | ||
18ac6185 | 990 | static inline bool afs_cb_is_broken(unsigned int cb_break, |
20325960 | 991 | const struct afs_vnode *vnode) |
68251f0a | 992 | { |
20325960 | 993 | return cb_break != (vnode->cb_break + vnode->volume->cb_v_break); |
68251f0a DH |
994 | } |
995 | ||
1da177e4 LT |
996 | /* |
997 | * cell.c | |
998 | */ | |
989782dc | 999 | extern int afs_cell_init(struct afs_net *, const char *); |
dca54a7b DH |
1000 | extern struct afs_cell *afs_find_cell(struct afs_net *, const char *, unsigned, |
1001 | enum afs_cell_trace); | |
989782dc DH |
1002 | extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned, |
1003 | const char *, bool); | |
dca54a7b DH |
1004 | extern struct afs_cell *afs_use_cell(struct afs_cell *, enum afs_cell_trace); |
1005 | extern void afs_unuse_cell(struct afs_net *, struct afs_cell *, enum afs_cell_trace); | |
1006 | extern struct afs_cell *afs_get_cell(struct afs_cell *, enum afs_cell_trace); | |
1007 | extern void afs_see_cell(struct afs_cell *, enum afs_cell_trace); | |
1008 | extern void afs_put_cell(struct afs_cell *, enum afs_cell_trace); | |
1009 | extern void afs_queue_cell(struct afs_cell *, enum afs_cell_trace); | |
989782dc DH |
1010 | extern void afs_manage_cells(struct work_struct *); |
1011 | extern void afs_cells_timer(struct timer_list *); | |
f044c884 | 1012 | extern void __net_exit afs_cell_purge(struct afs_net *); |
08e0e7c8 DH |
1013 | |
1014 | /* | |
1015 | * cmservice.c | |
1016 | */ | |
1017 | extern bool afs_cm_incoming_call(struct afs_call *); | |
1018 | ||
1da177e4 LT |
1019 | /* |
1020 | * dir.c | |
1021 | */ | |
4d673da1 | 1022 | extern const struct file_operations afs_dir_file_operations; |
754661f1 | 1023 | extern const struct inode_operations afs_dir_inode_operations; |
f3ddee8d | 1024 | extern const struct address_space_operations afs_dir_aops; |
d61dcce2 | 1025 | extern const struct dentry_operations afs_fs_dentry_operations; |
4d673da1 | 1026 | |
66c7e1d3 | 1027 | extern void afs_d_release(struct dentry *); |
728279a5 | 1028 | extern void afs_check_for_remote_deletion(struct afs_operation *); |
66c7e1d3 | 1029 | |
63a4681f DH |
1030 | /* |
1031 | * dir_edit.c | |
1032 | */ | |
1033 | extern void afs_edit_dir_add(struct afs_vnode *, struct qstr *, struct afs_fid *, | |
1034 | enum afs_edit_dir_reason); | |
1035 | extern void afs_edit_dir_remove(struct afs_vnode *, struct qstr *, enum afs_edit_dir_reason); | |
1036 | ||
79ddbfa5 DH |
1037 | /* |
1038 | * dir_silly.c | |
1039 | */ | |
1040 | extern int afs_sillyrename(struct afs_vnode *, struct afs_vnode *, | |
1041 | struct dentry *, struct key *); | |
1042 | extern int afs_silly_iput(struct dentry *, struct inode *); | |
1043 | ||
66c7e1d3 DH |
1044 | /* |
1045 | * dynroot.c | |
1046 | */ | |
66c7e1d3 DH |
1047 | extern const struct inode_operations afs_dynroot_inode_operations; |
1048 | extern const struct dentry_operations afs_dynroot_dentry_operations; | |
1049 | ||
1050 | extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *); | |
0da0b7fd DH |
1051 | extern int afs_dynroot_mkdir(struct afs_net *, struct afs_cell *); |
1052 | extern void afs_dynroot_rmdir(struct afs_net *, struct afs_cell *); | |
1053 | extern int afs_dynroot_populate(struct super_block *); | |
1054 | extern void afs_dynroot_depopulate(struct super_block *); | |
1da177e4 LT |
1055 | |
1056 | /* | |
1057 | * file.c | |
1058 | */ | |
75bd228d DH |
1059 | extern const struct address_space_operations afs_file_aops; |
1060 | extern const struct address_space_operations afs_symlink_aops; | |
754661f1 | 1061 | extern const struct inode_operations afs_file_inode_operations; |
00d3b7a4 | 1062 | extern const struct file_operations afs_file_operations; |
6a19114b | 1063 | extern const struct netfs_request_ops afs_req_ops; |
00d3b7a4 | 1064 | |
4343d008 DH |
1065 | extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *); |
1066 | extern void afs_put_wb_key(struct afs_wb_key *); | |
00d3b7a4 DH |
1067 | extern int afs_open(struct inode *, struct file *); |
1068 | extern int afs_release(struct inode *, struct file *); | |
c69bf479 | 1069 | extern int afs_fetch_data(struct afs_vnode *, struct afs_read *); |
5cbf0398 | 1070 | extern struct afs_read *afs_alloc_read(gfp_t); |
196ee9cd | 1071 | extern void afs_put_read(struct afs_read *); |
c7f75ef3 | 1072 | extern int afs_write_inode(struct inode *, struct writeback_control *); |
1da177e4 | 1073 | |
d4438a25 DH |
1074 | static inline struct afs_read *afs_get_read(struct afs_read *req) |
1075 | { | |
1076 | refcount_inc(&req->usage); | |
1077 | return req; | |
1078 | } | |
1079 | ||
e8d6c554 DH |
1080 | /* |
1081 | * flock.c | |
1082 | */ | |
f044c884 DH |
1083 | extern struct workqueue_struct *afs_lock_manager; |
1084 | ||
a690f60a | 1085 | extern void afs_lock_op_done(struct afs_call *); |
e8d6c554 DH |
1086 | extern void afs_lock_work(struct work_struct *); |
1087 | extern void afs_lock_may_be_available(struct afs_vnode *); | |
1088 | extern int afs_lock(struct file *, int, struct file_lock *); | |
1089 | extern int afs_flock(struct file *, int, struct file_lock *); | |
1090 | ||
08e0e7c8 DH |
1091 | /* |
1092 | * fsclient.c | |
1093 | */ | |
e49c7b2f DH |
1094 | extern void afs_fs_fetch_status(struct afs_operation *); |
1095 | extern void afs_fs_fetch_data(struct afs_operation *); | |
1096 | extern void afs_fs_create_file(struct afs_operation *); | |
1097 | extern void afs_fs_make_dir(struct afs_operation *); | |
1098 | extern void afs_fs_remove_file(struct afs_operation *); | |
1099 | extern void afs_fs_remove_dir(struct afs_operation *); | |
1100 | extern void afs_fs_link(struct afs_operation *); | |
1101 | extern void afs_fs_symlink(struct afs_operation *); | |
1102 | extern void afs_fs_rename(struct afs_operation *); | |
1103 | extern void afs_fs_store_data(struct afs_operation *); | |
1104 | extern void afs_fs_setattr(struct afs_operation *); | |
1105 | extern void afs_fs_get_volume_status(struct afs_operation *); | |
1106 | extern void afs_fs_set_lock(struct afs_operation *); | |
1107 | extern void afs_fs_extend_lock(struct afs_operation *); | |
1108 | extern void afs_fs_release_lock(struct afs_operation *); | |
d2ddc776 DH |
1109 | extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, |
1110 | struct afs_addr_cursor *, struct key *); | |
f6cbb368 DH |
1111 | extern bool afs_fs_get_capabilities(struct afs_net *, struct afs_server *, |
1112 | struct afs_addr_cursor *, struct key *); | |
e49c7b2f | 1113 | extern void afs_fs_inline_bulk_status(struct afs_operation *); |
08e0e7c8 | 1114 | |
260f082b DH |
1115 | struct afs_acl { |
1116 | u32 size; | |
1117 | u8 data[]; | |
1118 | }; | |
1119 | ||
e49c7b2f DH |
1120 | extern void afs_fs_fetch_acl(struct afs_operation *); |
1121 | extern void afs_fs_store_acl(struct afs_operation *); | |
1122 | ||
1123 | /* | |
1124 | * fs_operation.c | |
1125 | */ | |
1126 | extern struct afs_operation *afs_alloc_operation(struct key *, struct afs_volume *); | |
1127 | extern int afs_put_operation(struct afs_operation *); | |
1128 | extern bool afs_begin_vnode_operation(struct afs_operation *); | |
1129 | extern void afs_wait_for_operation(struct afs_operation *); | |
1130 | extern int afs_do_sync_operation(struct afs_operation *); | |
1131 | ||
1132 | static inline void afs_op_nomem(struct afs_operation *op) | |
1133 | { | |
1134 | op->error = -ENOMEM; | |
1135 | } | |
1136 | ||
1137 | static inline void afs_op_set_vnode(struct afs_operation *op, unsigned int n, | |
1138 | struct afs_vnode *vnode) | |
1139 | { | |
1140 | op->file[n].vnode = vnode; | |
1141 | op->file[n].need_io_lock = true; | |
1142 | } | |
1143 | ||
1144 | static inline void afs_op_set_fid(struct afs_operation *op, unsigned int n, | |
1145 | const struct afs_fid *fid) | |
1146 | { | |
1147 | op->file[n].fid = *fid; | |
1148 | } | |
260f082b | 1149 | |
3bf0fb6f DH |
1150 | /* |
1151 | * fs_probe.c | |
1152 | */ | |
1153 | extern void afs_fileserver_probe_result(struct afs_call *); | |
f6cbb368 | 1154 | extern void afs_fs_probe_fileserver(struct afs_net *, struct afs_server *, struct key *, bool); |
3bf0fb6f | 1155 | extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long); |
8409f67b | 1156 | extern void afs_probe_fileserver(struct afs_net *, struct afs_server *); |
f6cbb368 | 1157 | extern void afs_fs_probe_dispatcher(struct work_struct *); |
8409f67b | 1158 | extern int afs_wait_for_one_fs_probe(struct afs_server *, bool); |
5481fc6e | 1159 | extern void afs_fs_probe_cleanup(struct afs_net *); |
3bf0fb6f | 1160 | |
1da177e4 LT |
1161 | /* |
1162 | * inode.c | |
1163 | */ | |
b6489a49 DH |
1164 | extern const struct afs_operation_ops afs_fetch_status_operation; |
1165 | ||
e49c7b2f | 1166 | extern void afs_vnode_commit_status(struct afs_operation *, struct afs_vnode_param *); |
a58823ac | 1167 | extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *); |
e49c7b2f | 1168 | extern int afs_ilookup5_test_by_fid(struct inode *, void *); |
4d673da1 | 1169 | extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); |
e49c7b2f DH |
1170 | extern struct inode *afs_iget(struct afs_operation *, struct afs_vnode_param *); |
1171 | extern struct inode *afs_root_iget(struct super_block *, struct key *); | |
c925bd0a | 1172 | extern bool afs_check_validity(struct afs_vnode *); |
260a9803 | 1173 | extern int afs_validate(struct afs_vnode *, struct key *); |
0050d7f5 | 1174 | bool afs_pagecache_valid(struct afs_vnode *); |
b74d24f7 | 1175 | extern int afs_getattr(struct mnt_idmap *idmap, const struct path *, |
549c7297 | 1176 | struct kstat *, u32, unsigned int); |
c1632a0f | 1177 | extern int afs_setattr(struct mnt_idmap *idmap, struct dentry *, struct iattr *); |
b57922d9 | 1178 | extern void afs_evict_inode(struct inode *); |
bec5eb61 | 1179 | extern int afs_drop_inode(struct inode *); |
1da177e4 LT |
1180 | |
1181 | /* | |
1182 | * main.c | |
1183 | */ | |
0ad53eee | 1184 | extern struct workqueue_struct *afs_wq; |
5b86d4ff | 1185 | extern int afs_net_id; |
f044c884 | 1186 | |
5b86d4ff | 1187 | static inline struct afs_net *afs_net(struct net *net) |
f044c884 | 1188 | { |
5b86d4ff | 1189 | return net_generic(net, afs_net_id); |
f044c884 DH |
1190 | } |
1191 | ||
5b86d4ff | 1192 | static inline struct afs_net *afs_sb2net(struct super_block *sb) |
f044c884 | 1193 | { |
5b86d4ff | 1194 | return afs_net(AFS_FS_S(sb)->net_ns); |
f044c884 DH |
1195 | } |
1196 | ||
5b86d4ff | 1197 | static inline struct afs_net *afs_d2net(struct dentry *dentry) |
f044c884 | 1198 | { |
5b86d4ff | 1199 | return afs_sb2net(dentry->d_sb); |
f044c884 DH |
1200 | } |
1201 | ||
5b86d4ff | 1202 | static inline struct afs_net *afs_i2net(struct inode *inode) |
f044c884 | 1203 | { |
5b86d4ff | 1204 | return afs_sb2net(inode->i_sb); |
f044c884 DH |
1205 | } |
1206 | ||
5b86d4ff | 1207 | static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) |
f044c884 | 1208 | { |
874c8ca1 | 1209 | return afs_i2net(&vnode->netfs.inode); |
f044c884 DH |
1210 | } |
1211 | ||
5b86d4ff | 1212 | static inline struct afs_net *afs_sock2net(struct sock *sk) |
f044c884 | 1213 | { |
5b86d4ff | 1214 | return net_generic(sock_net(sk), afs_net_id); |
f044c884 | 1215 | } |
1da177e4 | 1216 | |
d55b4da4 DH |
1217 | static inline void __afs_stat(atomic_t *s) |
1218 | { | |
1219 | atomic_inc(s); | |
1220 | } | |
1221 | ||
1222 | #define afs_stat_v(vnode, n) __afs_stat(&afs_v2net(vnode)->n) | |
1223 | ||
08e0e7c8 DH |
1224 | /* |
1225 | * misc.c | |
1226 | */ | |
1227 | extern int afs_abort_to_error(u32); | |
4584ae96 | 1228 | extern void afs_prioritise_error(struct afs_error *, int, u32); |
08e0e7c8 | 1229 | |
1da177e4 LT |
1230 | /* |
1231 | * mntpt.c | |
1232 | */ | |
754661f1 | 1233 | extern const struct inode_operations afs_mntpt_inode_operations; |
bec5eb61 | 1234 | extern const struct inode_operations afs_autocell_inode_operations; |
4b6f5d20 | 1235 | extern const struct file_operations afs_mntpt_file_operations; |
1da177e4 | 1236 | |
d18610b0 | 1237 | extern struct vfsmount *afs_d_automount(struct path *); |
08e0e7c8 | 1238 | extern void afs_mntpt_kill_timer(void); |
1da177e4 | 1239 | |
1da177e4 LT |
1240 | /* |
1241 | * proc.c | |
1242 | */ | |
b6cfbeca | 1243 | #ifdef CONFIG_PROC_FS |
f044c884 DH |
1244 | extern int __net_init afs_proc_init(struct afs_net *); |
1245 | extern void __net_exit afs_proc_cleanup(struct afs_net *); | |
5b86d4ff DH |
1246 | extern int afs_proc_cell_setup(struct afs_cell *); |
1247 | extern void afs_proc_cell_remove(struct afs_cell *); | |
6f8880d8 | 1248 | extern void afs_put_sysnames(struct afs_sysnames *); |
b6cfbeca DH |
1249 | #else |
1250 | static inline int afs_proc_init(struct afs_net *net) { return 0; } | |
1251 | static inline void afs_proc_cleanup(struct afs_net *net) {} | |
1252 | static inline int afs_proc_cell_setup(struct afs_cell *cell) { return 0; } | |
1253 | static inline void afs_proc_cell_remove(struct afs_cell *cell) {} | |
1254 | static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {} | |
1255 | #endif | |
1da177e4 | 1256 | |
d2ddc776 DH |
1257 | /* |
1258 | * rotate.c | |
1259 | */ | |
a310082f | 1260 | extern bool afs_select_fileserver(struct afs_operation *); |
e49c7b2f | 1261 | extern void afs_dump_edestaddrreq(const struct afs_operation *); |
d2ddc776 | 1262 | |
08e0e7c8 DH |
1263 | /* |
1264 | * rxrpc.c | |
1265 | */ | |
f044c884 | 1266 | extern struct workqueue_struct *afs_async_calls; |
8324f0bc | 1267 | |
f044c884 DH |
1268 | extern int __net_init afs_open_socket(struct afs_net *); |
1269 | extern void __net_exit afs_close_socket(struct afs_net *); | |
1270 | extern void afs_charge_preallocation(struct work_struct *); | |
341f741f | 1271 | extern void afs_put_call(struct afs_call *); |
0b9bf381 DH |
1272 | extern void afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t); |
1273 | extern long afs_wait_for_call_to_complete(struct afs_call *, struct afs_addr_cursor *); | |
f044c884 DH |
1274 | extern struct afs_call *afs_alloc_flat_call(struct afs_net *, |
1275 | const struct afs_call_type *, | |
08e0e7c8 DH |
1276 | size_t, size_t); |
1277 | extern void afs_flat_call_destructor(struct afs_call *); | |
08e0e7c8 | 1278 | extern void afs_send_empty_reply(struct afs_call *); |
b908fe6b | 1279 | extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); |
12bdcf33 | 1280 | extern int afs_extract_data(struct afs_call *, bool); |
7126ead9 | 1281 | extern int afs_protocol_error(struct afs_call *, enum afs_eproto_cause); |
08e0e7c8 | 1282 | |
e49c7b2f DH |
1283 | static inline void afs_make_op_call(struct afs_operation *op, struct afs_call *call, |
1284 | gfp_t gfp) | |
20b8391f | 1285 | { |
e49c7b2f | 1286 | op->call = call; |
a310082f | 1287 | op->type = call->type; |
e49c7b2f DH |
1288 | call->op = op; |
1289 | call->key = op->key; | |
e49c7b2f DH |
1290 | call->intr = !(op->flags & AFS_OPERATION_UNINTR); |
1291 | afs_make_call(&op->ac, call, gfp); | |
20b8391f DH |
1292 | } |
1293 | ||
12bdcf33 DH |
1294 | static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size) |
1295 | { | |
f105da1a | 1296 | call->iov_len = size; |
12bdcf33 DH |
1297 | call->kvec[0].iov_base = buf; |
1298 | call->kvec[0].iov_len = size; | |
de4eda9d | 1299 | iov_iter_kvec(&call->def_iter, ITER_DEST, call->kvec, 1, size); |
12bdcf33 DH |
1300 | } |
1301 | ||
1302 | static inline void afs_extract_to_tmp(struct afs_call *call) | |
1303 | { | |
f105da1a | 1304 | call->iov_len = sizeof(call->tmp); |
12bdcf33 DH |
1305 | afs_extract_begin(call, &call->tmp, sizeof(call->tmp)); |
1306 | } | |
1307 | ||
1308 | static inline void afs_extract_to_tmp64(struct afs_call *call) | |
1309 | { | |
f105da1a | 1310 | call->iov_len = sizeof(call->tmp64); |
12bdcf33 DH |
1311 | afs_extract_begin(call, &call->tmp64, sizeof(call->tmp64)); |
1312 | } | |
1313 | ||
1314 | static inline void afs_extract_discard(struct afs_call *call, size_t size) | |
1315 | { | |
f105da1a | 1316 | call->iov_len = size; |
de4eda9d | 1317 | iov_iter_discard(&call->def_iter, ITER_DEST, size); |
12bdcf33 DH |
1318 | } |
1319 | ||
1320 | static inline void afs_extract_to_buf(struct afs_call *call, size_t size) | |
1321 | { | |
f105da1a | 1322 | call->iov_len = size; |
12bdcf33 DH |
1323 | afs_extract_begin(call, call->buffer, size); |
1324 | } | |
1325 | ||
d001648e | 1326 | static inline int afs_transfer_reply(struct afs_call *call) |
372ee163 | 1327 | { |
12bdcf33 | 1328 | return afs_extract_data(call, false); |
372ee163 DH |
1329 | } |
1330 | ||
98bf40cd DH |
1331 | static inline bool afs_check_call_state(struct afs_call *call, |
1332 | enum afs_call_state state) | |
1333 | { | |
1334 | return READ_ONCE(call->state) == state; | |
1335 | } | |
1336 | ||
1337 | static inline bool afs_set_call_state(struct afs_call *call, | |
1338 | enum afs_call_state from, | |
1339 | enum afs_call_state to) | |
1340 | { | |
1341 | bool ok = false; | |
1342 | ||
1343 | spin_lock_bh(&call->state_lock); | |
1344 | if (call->state == from) { | |
1345 | call->state = to; | |
1346 | trace_afs_call_state(call, from, to, 0, 0); | |
1347 | ok = true; | |
1348 | } | |
1349 | spin_unlock_bh(&call->state_lock); | |
1350 | return ok; | |
1351 | } | |
1352 | ||
1353 | static inline void afs_set_call_complete(struct afs_call *call, | |
1354 | int error, u32 remote_abort) | |
1355 | { | |
1356 | enum afs_call_state state; | |
1357 | bool ok = false; | |
1358 | ||
1359 | spin_lock_bh(&call->state_lock); | |
1360 | state = call->state; | |
1361 | if (state != AFS_CALL_COMPLETE) { | |
1362 | call->abort_code = remote_abort; | |
1363 | call->error = error; | |
1364 | call->state = AFS_CALL_COMPLETE; | |
1365 | trace_afs_call_state(call, state, AFS_CALL_COMPLETE, | |
1366 | error, remote_abort); | |
1367 | ok = true; | |
1368 | } | |
1369 | spin_unlock_bh(&call->state_lock); | |
dde9f095 | 1370 | if (ok) { |
98bf40cd | 1371 | trace_afs_call_done(call); |
dde9f095 DH |
1372 | |
1373 | /* Asynchronous calls have two refs to release - one from the alloc and | |
1374 | * one queued with the work item - and we can't just deallocate the | |
1375 | * call because the work item may be queued again. | |
1376 | */ | |
1377 | if (call->drop_ref) | |
1378 | afs_put_call(call); | |
1379 | } | |
98bf40cd DH |
1380 | } |
1381 | ||
00d3b7a4 DH |
1382 | /* |
1383 | * security.c | |
1384 | */ | |
be080a6f | 1385 | extern void afs_put_permits(struct afs_permits *); |
00d3b7a4 | 1386 | extern void afs_clear_permits(struct afs_vnode *); |
a58823ac DH |
1387 | extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int, |
1388 | struct afs_status_cb *); | |
00d3b7a4 | 1389 | extern struct key *afs_request_key(struct afs_cell *); |
8b6a666a | 1390 | extern struct key *afs_request_key_rcu(struct afs_cell *); |
0fafdc9f | 1391 | extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); |
4609e1f1 | 1392 | extern int afs_permission(struct mnt_idmap *, struct inode *, int); |
be080a6f | 1393 | extern void __exit afs_clean_up_permit_cache(void); |
00d3b7a4 | 1394 | |
08e0e7c8 DH |
1395 | /* |
1396 | * server.c | |
1397 | */ | |
1398 | extern spinlock_t afs_server_peer_lock; | |
1399 | ||
f044c884 DH |
1400 | extern struct afs_server *afs_find_server(struct afs_net *, |
1401 | const struct sockaddr_rxrpc *); | |
d2ddc776 | 1402 | extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); |
81006805 | 1403 | extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *, u32); |
45218193 | 1404 | extern struct afs_server *afs_get_server(struct afs_server *, enum afs_server_trace); |
977e5f8e DH |
1405 | extern struct afs_server *afs_use_server(struct afs_server *, enum afs_server_trace); |
1406 | extern void afs_unuse_server(struct afs_net *, struct afs_server *, enum afs_server_trace); | |
1407 | extern void afs_unuse_server_notime(struct afs_net *, struct afs_server *, enum afs_server_trace); | |
45218193 | 1408 | extern void afs_put_server(struct afs_net *, struct afs_server *, enum afs_server_trace); |
d2ddc776 DH |
1409 | extern void afs_manage_servers(struct work_struct *); |
1410 | extern void afs_servers_timer(struct timer_list *); | |
f6cbb368 | 1411 | extern void afs_fs_probe_timer(struct timer_list *); |
f044c884 | 1412 | extern void __net_exit afs_purge_servers(struct afs_net *); |
a310082f | 1413 | extern bool afs_check_server_record(struct afs_operation *, struct afs_server *); |
08e0e7c8 | 1414 | |
f6cbb368 DH |
1415 | static inline void afs_inc_servers_outstanding(struct afs_net *net) |
1416 | { | |
1417 | atomic_inc(&net->servers_outstanding); | |
1418 | } | |
1419 | ||
1420 | static inline void afs_dec_servers_outstanding(struct afs_net *net) | |
1421 | { | |
1422 | if (atomic_dec_and_test(&net->servers_outstanding)) | |
1423 | wake_up_var(&net->servers_outstanding); | |
1424 | } | |
1425 | ||
1426 | static inline bool afs_is_probing_server(struct afs_server *server) | |
1427 | { | |
1428 | return list_empty(&server->probe_link); | |
1429 | } | |
1430 | ||
00d3b7a4 | 1431 | /* |
d2ddc776 | 1432 | * server_list.c |
00d3b7a4 | 1433 | */ |
d2ddc776 DH |
1434 | static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist) |
1435 | { | |
1436 | refcount_inc(&slist->usage); | |
1437 | return slist; | |
1438 | } | |
00d3b7a4 | 1439 | |
d2ddc776 DH |
1440 | extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); |
1441 | extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, | |
1442 | struct afs_vldb_entry *, | |
1443 | u8); | |
1444 | extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); | |
08e0e7c8 DH |
1445 | |
1446 | /* | |
d2ddc776 | 1447 | * super.c |
08e0e7c8 | 1448 | */ |
d2ddc776 | 1449 | extern int __init afs_fs_init(void); |
5b86d4ff | 1450 | extern void afs_fs_exit(void); |
08e0e7c8 DH |
1451 | |
1452 | /* | |
d2ddc776 | 1453 | * vlclient.c |
08e0e7c8 | 1454 | */ |
0a5143f2 DH |
1455 | extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *, |
1456 | const char *, int); | |
1457 | extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *, const uuid_t *); | |
0b9bf381 DH |
1458 | extern struct afs_call *afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, |
1459 | struct key *, struct afs_vlserver *, unsigned int); | |
0a5143f2 | 1460 | extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *, const uuid_t *); |
c3e9f888 | 1461 | extern char *afs_yfsvl_get_cell_name(struct afs_vl_cursor *); |
0a5143f2 | 1462 | |
8a070a96 DH |
1463 | /* |
1464 | * vl_alias.c | |
1465 | */ | |
1466 | extern int afs_cell_detect_alias(struct afs_cell *, struct key *); | |
1467 | ||
3bf0fb6f DH |
1468 | /* |
1469 | * vl_probe.c | |
1470 | */ | |
1471 | extern void afs_vlserver_probe_result(struct afs_call *); | |
1472 | extern int afs_send_vl_probes(struct afs_net *, struct key *, struct afs_vlserver_list *); | |
1473 | extern int afs_wait_for_vl_probes(struct afs_vlserver_list *, unsigned long); | |
1474 | ||
0a5143f2 DH |
1475 | /* |
1476 | * vl_rotate.c | |
1477 | */ | |
1478 | extern bool afs_begin_vlserver_operation(struct afs_vl_cursor *, | |
1479 | struct afs_cell *, struct key *); | |
1480 | extern bool afs_select_vlserver(struct afs_vl_cursor *); | |
1481 | extern bool afs_select_current_vlserver(struct afs_vl_cursor *); | |
1482 | extern int afs_end_vlserver_operation(struct afs_vl_cursor *); | |
1483 | ||
1484 | /* | |
1485 | * vlserver_list.c | |
1486 | */ | |
1487 | static inline struct afs_vlserver *afs_get_vlserver(struct afs_vlserver *vlserver) | |
1488 | { | |
c56f9ec8 | 1489 | refcount_inc(&vlserver->ref); |
0a5143f2 DH |
1490 | return vlserver; |
1491 | } | |
1492 | ||
1493 | static inline struct afs_vlserver_list *afs_get_vlserverlist(struct afs_vlserver_list *vllist) | |
1494 | { | |
1495 | if (vllist) | |
c56f9ec8 | 1496 | refcount_inc(&vllist->ref); |
0a5143f2 DH |
1497 | return vllist; |
1498 | } | |
1499 | ||
1500 | extern struct afs_vlserver *afs_alloc_vlserver(const char *, size_t, unsigned short); | |
1501 | extern void afs_put_vlserver(struct afs_net *, struct afs_vlserver *); | |
1502 | extern struct afs_vlserver_list *afs_alloc_vlserver_list(unsigned int); | |
1503 | extern void afs_put_vlserverlist(struct afs_net *, struct afs_vlserver_list *); | |
1504 | extern struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *, | |
1505 | const void *, size_t); | |
08e0e7c8 DH |
1506 | |
1507 | /* | |
1508 | * volume.c | |
1509 | */ | |
13fcc683 | 1510 | extern struct afs_volume *afs_create_volume(struct afs_fs_context *); |
523d27cd | 1511 | extern int afs_activate_volume(struct afs_volume *); |
d2ddc776 | 1512 | extern void afs_deactivate_volume(struct afs_volume *); |
cca37d45 DH |
1513 | extern struct afs_volume *afs_get_volume(struct afs_volume *, enum afs_volume_trace); |
1514 | extern void afs_put_volume(struct afs_net *, struct afs_volume *, enum afs_volume_trace); | |
a310082f | 1515 | extern int afs_check_volume_status(struct afs_volume *, struct afs_operation *); |
08e0e7c8 | 1516 | |
31143d5d DH |
1517 | /* |
1518 | * write.c | |
1519 | */ | |
c7f75ef3 | 1520 | #ifdef CONFIG_AFS_FSCACHE |
8fb72b4a | 1521 | bool afs_dirty_folio(struct address_space *, struct folio *); |
c7f75ef3 | 1522 | #else |
8fb72b4a | 1523 | #define afs_dirty_folio filemap_dirty_folio |
c7f75ef3 | 1524 | #endif |
15b4650e | 1525 | extern int afs_write_begin(struct file *file, struct address_space *mapping, |
9d6b0cd7 | 1526 | loff_t pos, unsigned len, |
15b4650e NP |
1527 | struct page **pagep, void **fsdata); |
1528 | extern int afs_write_end(struct file *file, struct address_space *mapping, | |
1529 | loff_t pos, unsigned len, unsigned copied, | |
1530 | struct page *page, void *fsdata); | |
31143d5d DH |
1531 | extern int afs_writepage(struct page *, struct writeback_control *); |
1532 | extern int afs_writepages(struct address_space *, struct writeback_control *); | |
50b5551d | 1533 | extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); |
02c24a82 | 1534 | extern int afs_fsync(struct file *, loff_t, loff_t, int); |
0722f186 | 1535 | extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf); |
4343d008 | 1536 | extern void afs_prune_wb_keys(struct afs_vnode *); |
a42442dd | 1537 | int afs_launder_folio(struct folio *); |
31143d5d | 1538 | |
d3e3b7ea DH |
1539 | /* |
1540 | * xattr.c | |
1541 | */ | |
1542 | extern const struct xattr_handler *afs_xattr_handlers[]; | |
31143d5d | 1543 | |
30062bd1 DH |
1544 | /* |
1545 | * yfsclient.c | |
1546 | */ | |
e49c7b2f DH |
1547 | extern void yfs_fs_fetch_data(struct afs_operation *); |
1548 | extern void yfs_fs_create_file(struct afs_operation *); | |
1549 | extern void yfs_fs_make_dir(struct afs_operation *); | |
1550 | extern void yfs_fs_remove_file2(struct afs_operation *); | |
1551 | extern void yfs_fs_remove_file(struct afs_operation *); | |
1552 | extern void yfs_fs_remove_dir(struct afs_operation *); | |
1553 | extern void yfs_fs_link(struct afs_operation *); | |
1554 | extern void yfs_fs_symlink(struct afs_operation *); | |
1555 | extern void yfs_fs_rename(struct afs_operation *); | |
1556 | extern void yfs_fs_store_data(struct afs_operation *); | |
1557 | extern void yfs_fs_setattr(struct afs_operation *); | |
1558 | extern void yfs_fs_get_volume_status(struct afs_operation *); | |
1559 | extern void yfs_fs_set_lock(struct afs_operation *); | |
1560 | extern void yfs_fs_extend_lock(struct afs_operation *); | |
1561 | extern void yfs_fs_release_lock(struct afs_operation *); | |
1562 | extern void yfs_fs_fetch_status(struct afs_operation *); | |
1563 | extern void yfs_fs_inline_bulk_status(struct afs_operation *); | |
d2ddc776 | 1564 | |
ae46578b DH |
1565 | struct yfs_acl { |
1566 | struct afs_acl *acl; /* Dir/file/symlink ACL */ | |
1567 | struct afs_acl *vol_acl; /* Whole volume ACL */ | |
1568 | u32 inherit_flag; /* True if ACL is inherited from parent dir */ | |
1569 | u32 num_cleaned; /* Number of ACEs removed due to subject removal */ | |
1570 | unsigned int flags; | |
1571 | #define YFS_ACL_WANT_ACL 0x01 /* Set if caller wants ->acl */ | |
1572 | #define YFS_ACL_WANT_VOL_ACL 0x02 /* Set if caller wants ->vol_acl */ | |
1573 | }; | |
1574 | ||
1575 | extern void yfs_free_opaque_acl(struct yfs_acl *); | |
e49c7b2f DH |
1576 | extern void yfs_fs_fetch_opaque_acl(struct afs_operation *); |
1577 | extern void yfs_fs_store_opaque_acl2(struct afs_operation *); | |
ae46578b | 1578 | |
d2ddc776 DH |
1579 | /* |
1580 | * Miscellaneous inline functions. | |
1581 | */ | |
1582 | static inline struct afs_vnode *AFS_FS_I(struct inode *inode) | |
1583 | { | |
874c8ca1 | 1584 | return container_of(inode, struct afs_vnode, netfs.inode); |
d2ddc776 DH |
1585 | } |
1586 | ||
1587 | static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) | |
1588 | { | |
874c8ca1 | 1589 | return &vnode->netfs.inode; |
d2ddc776 DH |
1590 | } |
1591 | ||
e49c7b2f DH |
1592 | /* |
1593 | * Note that a dentry got changed. We need to set d_fsdata to the data version | |
1594 | * number derived from the result of the operation. It doesn't matter if | |
1595 | * d_fsdata goes backwards as we'll just revalidate. | |
1596 | */ | |
1597 | static inline void afs_update_dentry_version(struct afs_operation *op, | |
1598 | struct afs_vnode_param *dir_vp, | |
1599 | struct dentry *dentry) | |
1600 | { | |
1601 | if (!op->error) | |
1602 | dentry->d_fsdata = | |
1603 | (void *)(unsigned long)dir_vp->scb.status.data_version; | |
1604 | } | |
1605 | ||
9d37e1ca DH |
1606 | /* |
1607 | * Set the file size and block count. Estimate the number of 512 bytes blocks | |
1608 | * used, rounded up to nearest 1K for consistency with other AFS clients. | |
1609 | */ | |
1610 | static inline void afs_set_i_size(struct afs_vnode *vnode, u64 size) | |
1611 | { | |
874c8ca1 DH |
1612 | i_size_write(&vnode->netfs.inode, size); |
1613 | vnode->netfs.inode.i_blocks = ((size + 1023) >> 10) << 1; | |
9d37e1ca DH |
1614 | } |
1615 | ||
b6489a49 DH |
1616 | /* |
1617 | * Check for a conflicting operation on a directory that we just unlinked from. | |
1618 | * If someone managed to sneak a link or an unlink in on the file we just | |
1619 | * unlinked, we won't be able to trust nlink on an AFS file (but not YFS). | |
1620 | */ | |
1621 | static inline void afs_check_dir_conflict(struct afs_operation *op, | |
1622 | struct afs_vnode_param *dvp) | |
1623 | { | |
1624 | if (dvp->dv_before + dvp->dv_delta != dvp->scb.status.data_version) | |
1625 | op->flags |= AFS_OPERATION_DIR_CONFLICT; | |
1626 | } | |
1627 | ||
f51375cd DH |
1628 | static inline int afs_io_error(struct afs_call *call, enum afs_io_error where) |
1629 | { | |
1630 | trace_afs_io_error(call->debug_id, -EIO, where); | |
1631 | return -EIO; | |
1632 | } | |
1633 | ||
1634 | static inline int afs_bad(struct afs_vnode *vnode, enum afs_file_error where) | |
1635 | { | |
1636 | trace_afs_file_error(vnode, -EIO, where); | |
1637 | return -EIO; | |
1638 | } | |
d2ddc776 | 1639 | |
08e0e7c8 DH |
1640 | /*****************************************************************************/ |
1641 | /* | |
1642 | * debug tracing | |
1643 | */ | |
1644 | extern unsigned afs_debug; | |
1645 | ||
1646 | #define dbgprintk(FMT,...) \ | |
ad16df84 | 1647 | printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) |
08e0e7c8 | 1648 | |
530b6412 HH |
1649 | #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1650 | #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
08e0e7c8 DH |
1651 | #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) |
1652 | ||
1653 | ||
1654 | #if defined(__KDEBUG) | |
1655 | #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) | |
1656 | #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) | |
1657 | #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) | |
1658 | ||
1659 | #elif defined(CONFIG_AFS_DEBUG) | |
1660 | #define AFS_DEBUG_KENTER 0x01 | |
1661 | #define AFS_DEBUG_KLEAVE 0x02 | |
1662 | #define AFS_DEBUG_KDEBUG 0x04 | |
1663 | ||
1664 | #define _enter(FMT,...) \ | |
1665 | do { \ | |
1666 | if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ | |
1667 | kenter(FMT,##__VA_ARGS__); \ | |
1668 | } while (0) | |
1669 | ||
1670 | #define _leave(FMT,...) \ | |
1671 | do { \ | |
1672 | if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ | |
1673 | kleave(FMT,##__VA_ARGS__); \ | |
1674 | } while (0) | |
1675 | ||
1676 | #define _debug(FMT,...) \ | |
1677 | do { \ | |
1678 | if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ | |
1679 | kdebug(FMT,##__VA_ARGS__); \ | |
1680 | } while (0) | |
1681 | ||
1682 | #else | |
12fdff3f DH |
1683 | #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
1684 | #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) | |
1685 | #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) | |
08e0e7c8 DH |
1686 | #endif |
1687 | ||
1688 | /* | |
1689 | * debug assertion checking | |
1690 | */ | |
1691 | #if 1 // defined(__KDEBUGALL) | |
1692 | ||
1693 | #define ASSERT(X) \ | |
1694 | do { \ | |
1695 | if (unlikely(!(X))) { \ | |
1696 | printk(KERN_ERR "\n"); \ | |
1697 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
1698 | BUG(); \ | |
1699 | } \ | |
1700 | } while(0) | |
1701 | ||
1702 | #define ASSERTCMP(X, OP, Y) \ | |
1703 | do { \ | |
1704 | if (unlikely(!((X) OP (Y)))) { \ | |
1705 | printk(KERN_ERR "\n"); \ | |
1706 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
1707 | printk(KERN_ERR "%lu " #OP " %lu is false\n", \ | |
1708 | (unsigned long)(X), (unsigned long)(Y)); \ | |
1709 | printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ | |
1710 | (unsigned long)(X), (unsigned long)(Y)); \ | |
1711 | BUG(); \ | |
1712 | } \ | |
1713 | } while(0) | |
1714 | ||
416351f2 DH |
1715 | #define ASSERTRANGE(L, OP1, N, OP2, H) \ |
1716 | do { \ | |
1717 | if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ | |
1718 | printk(KERN_ERR "\n"); \ | |
1719 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
1720 | printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ | |
1721 | (unsigned long)(L), (unsigned long)(N), \ | |
1722 | (unsigned long)(H)); \ | |
1723 | printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ | |
1724 | (unsigned long)(L), (unsigned long)(N), \ | |
1725 | (unsigned long)(H)); \ | |
1726 | BUG(); \ | |
1727 | } \ | |
1728 | } while(0) | |
1729 | ||
08e0e7c8 DH |
1730 | #define ASSERTIF(C, X) \ |
1731 | do { \ | |
1732 | if (unlikely((C) && !(X))) { \ | |
1733 | printk(KERN_ERR "\n"); \ | |
1734 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
1735 | BUG(); \ | |
1736 | } \ | |
1737 | } while(0) | |
1738 | ||
1739 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1740 | do { \ | |
1741 | if (unlikely((C) && !((X) OP (Y)))) { \ | |
1742 | printk(KERN_ERR "\n"); \ | |
1743 | printk(KERN_ERR "AFS: Assertion failed\n"); \ | |
1744 | printk(KERN_ERR "%lu " #OP " %lu is false\n", \ | |
1745 | (unsigned long)(X), (unsigned long)(Y)); \ | |
1746 | printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ | |
1747 | (unsigned long)(X), (unsigned long)(Y)); \ | |
1748 | BUG(); \ | |
1749 | } \ | |
1750 | } while(0) | |
1751 | ||
1752 | #else | |
1753 | ||
1754 | #define ASSERT(X) \ | |
1755 | do { \ | |
1756 | } while(0) | |
1757 | ||
1758 | #define ASSERTCMP(X, OP, Y) \ | |
1759 | do { \ | |
1760 | } while(0) | |
1761 | ||
416351f2 DH |
1762 | #define ASSERTRANGE(L, OP1, N, OP2, H) \ |
1763 | do { \ | |
1764 | } while(0) | |
1765 | ||
08e0e7c8 DH |
1766 | #define ASSERTIF(C, X) \ |
1767 | do { \ | |
1768 | } while(0) | |
1769 | ||
1770 | #define ASSERTIFCMP(C, X, OP, Y) \ | |
1771 | do { \ | |
1772 | } while(0) | |
1773 | ||
1774 | #endif /* __KDEBUGALL */ |