Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/include/linux/nfs_fs.h | |
3 | * | |
4 | * Copyright (C) 1992 Rick Sladkey | |
5 | * | |
6 | * OS-specific nfs filesystem definitions and declarations | |
7 | */ | |
8 | ||
9 | #ifndef _LINUX_NFS_FS_H | |
10 | #define _LINUX_NFS_FS_H | |
11 | ||
e18fa700 JG |
12 | #include <linux/magic.h> |
13 | ||
03bf4b70 | 14 | /* Default timeout values */ |
259875ef TM |
15 | #define NFS_DEF_UDP_TIMEO (11) |
16 | #define NFS_DEF_UDP_RETRANS (3) | |
17 | #define NFS_DEF_TCP_TIMEO (600) | |
18 | #define NFS_DEF_TCP_RETRANS (2) | |
19 | ||
03bf4b70 CL |
20 | #define NFS_MAX_UDP_TIMEOUT (60*HZ) |
21 | #define NFS_MAX_TCP_TIMEOUT (600*HZ) | |
22 | ||
0e0cab74 CL |
23 | #define NFS_DEF_ACREGMIN (3) |
24 | #define NFS_DEF_ACREGMAX (60) | |
25 | #define NFS_DEF_ACDIRMIN (30) | |
26 | #define NFS_DEF_ACDIRMAX (60) | |
27 | ||
1da177e4 LT |
28 | /* |
29 | * When flushing a cluster of dirty pages, there can be different | |
30 | * strategies: | |
31 | */ | |
1da177e4 | 32 | #define FLUSH_SYNC 1 /* file being synced, or contention */ |
1da177e4 LT |
33 | #define FLUSH_STABLE 4 /* commit to stable storage */ |
34 | #define FLUSH_LOWPRI 8 /* low priority background flush */ | |
35 | #define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */ | |
b31268ac TM |
36 | #define FLUSH_COND_STABLE 32 /* conditional stable write - only stable |
37 | * if everything fits in one RPC */ | |
1da177e4 LT |
38 | |
39 | #ifdef __KERNEL__ | |
40 | ||
e27d359e TM |
41 | /* |
42 | * Enable dprintk() debugging support for nfs client. | |
43 | */ | |
44 | #ifdef CONFIG_NFS_DEBUG | |
45 | # define NFS_DEBUG | |
46 | #endif | |
47 | ||
7f1cbe51 DW |
48 | #include <linux/in.h> |
49 | #include <linux/mm.h> | |
50 | #include <linux/pagemap.h> | |
1c3c07e9 | 51 | #include <linux/rbtree.h> |
7f1cbe51 DW |
52 | #include <linux/rwsem.h> |
53 | #include <linux/wait.h> | |
54 | ||
55 | #include <linux/sunrpc/debug.h> | |
56 | #include <linux/sunrpc/auth.h> | |
57 | #include <linux/sunrpc/clnt.h> | |
58 | ||
59 | #include <linux/nfs.h> | |
60 | #include <linux/nfs2.h> | |
61 | #include <linux/nfs3.h> | |
62 | #include <linux/nfs4.h> | |
63 | #include <linux/nfs_xdr.h> | |
7f1cbe51 DW |
64 | #include <linux/nfs_fs_sb.h> |
65 | ||
7f1cbe51 DW |
66 | #include <linux/mempool.h> |
67 | ||
68 | /* | |
69 | * These are the default flags for swap requests | |
70 | */ | |
71 | #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) | |
72 | ||
1da177e4 LT |
73 | /* |
74 | * NFSv3/v4 Access mode cache entry | |
75 | */ | |
76 | struct nfs_access_entry { | |
1c3c07e9 | 77 | struct rb_node rb_node; |
cfcea3e8 | 78 | struct list_head lru; |
1da177e4 LT |
79 | unsigned long jiffies; |
80 | struct rpc_cred * cred; | |
81 | int mask; | |
82 | }; | |
83 | ||
f11ac8db TM |
84 | struct nfs_lock_context { |
85 | atomic_t count; | |
86 | struct list_head list; | |
87 | struct nfs_open_context *open_context; | |
88 | fl_owner_t lockowner; | |
89 | pid_t pid; | |
90 | }; | |
91 | ||
1da177e4 LT |
92 | struct nfs4_state; |
93 | struct nfs_open_context { | |
f11ac8db | 94 | struct nfs_lock_context lock_context; |
3d4ff43d | 95 | struct dentry *dentry; |
1da177e4 LT |
96 | struct rpc_cred *cred; |
97 | struct nfs4_state *state; | |
dc0b027d | 98 | fmode_t mode; |
7b159fc1 TM |
99 | |
100 | unsigned long flags; | |
101 | #define NFS_CONTEXT_ERROR_WRITE (0) | |
1da177e4 LT |
102 | int error; |
103 | ||
104 | struct list_head list; | |
82be417a | 105 | struct nfs4_threshold *mdsthreshold; |
480c2006 | 106 | }; |
00a92642 | 107 | |
480c2006 BS |
108 | struct nfs_open_dir_context { |
109 | struct rpc_cred *cred; | |
0c030806 | 110 | unsigned long attr_gencount; |
00a92642 | 111 | __u64 dir_cookie; |
8ef2ce3e | 112 | __u64 dup_cookie; |
0c030806 | 113 | signed char duped; |
1da177e4 LT |
114 | }; |
115 | ||
116 | /* | |
117 | * NFSv4 delegation | |
118 | */ | |
119 | struct nfs_delegation; | |
120 | ||
5c6a9f7d AG |
121 | struct posix_acl; |
122 | ||
1da177e4 LT |
123 | /* |
124 | * nfs fs inode data in memory | |
125 | */ | |
126 | struct nfs_inode { | |
127 | /* | |
128 | * The 64bit 'inode number' | |
129 | */ | |
130 | __u64 fileid; | |
131 | ||
132 | /* | |
133 | * NFS file handle | |
134 | */ | |
135 | struct nfs_fh fh; | |
136 | ||
137 | /* | |
138 | * Various flags | |
139 | */ | |
412d582e CL |
140 | unsigned long flags; /* atomic bit ops */ |
141 | unsigned long cache_validity; /* bit mask */ | |
1da177e4 LT |
142 | |
143 | /* | |
24bd68f4 | 144 | * read_cache_jiffies is when we started read-caching this inode. |
1da177e4 LT |
145 | * attrtimeo is for how long the cached information is assumed |
146 | * to be valid. A successful attribute revalidation doubles | |
147 | * attrtimeo (up to acregmax/acdirmax), a failure resets it to | |
148 | * acregmin/acdirmin. | |
149 | * | |
150 | * We need to revalidate the cached attrs for this inode if | |
151 | * | |
64672d55 PS |
152 | * jiffies - read_cache_jiffies >= attrtimeo |
153 | * | |
154 | * Please note the comparison is greater than or equal | |
155 | * so that zero timeout values can be specified. | |
1da177e4 | 156 | */ |
1da177e4 LT |
157 | unsigned long read_cache_jiffies; |
158 | unsigned long attrtimeo; | |
159 | unsigned long attrtimeo_timestamp; | |
1da177e4 | 160 | |
4704f0e2 | 161 | unsigned long attr_gencount; |
1da177e4 LT |
162 | /* "Generation counter" for the attribute cache. This is |
163 | * bumped whenever we update the metadata on the | |
164 | * server. | |
165 | */ | |
166 | unsigned long cache_change_attribute; | |
1da177e4 | 167 | |
1c3c07e9 | 168 | struct rb_root access_cache; |
cfcea3e8 TM |
169 | struct list_head access_cache_entry_lru; |
170 | struct list_head access_cache_inode_lru; | |
5c6a9f7d AG |
171 | #ifdef CONFIG_NFS_V3_ACL |
172 | struct posix_acl *acl_access; | |
173 | struct posix_acl *acl_default; | |
174 | #endif | |
1da177e4 LT |
175 | |
176 | /* | |
177 | * This is the cookie verifier used for NFSv3 readdir | |
178 | * operations | |
179 | */ | |
bc4785cd | 180 | __be32 cookieverf[2]; |
1da177e4 | 181 | |
fb8a1f11 | 182 | unsigned long npages; |
ea2cf228 | 183 | struct nfs_mds_commit_info commit_info; |
1da177e4 LT |
184 | |
185 | /* Open contexts for shared mmap writes */ | |
186 | struct list_head open_files; | |
187 | ||
565277f6 TM |
188 | /* Number of in-flight sillydelete RPC calls */ |
189 | atomic_t silly_count; | |
190 | /* List of deferred sillydelete requests */ | |
191 | struct hlist_head silly_list; | |
192 | wait_queue_head_t waitqueue; | |
193 | ||
89d77c8f | 194 | #if IS_ENABLED(CONFIG_NFS_V4) |
e50a1c2e | 195 | struct nfs4_cached_acl *nfs4_acl; |
1da177e4 LT |
196 | /* NFSv4 state */ |
197 | struct list_head open_states; | |
5b22216e | 198 | struct nfs_delegation __rcu *delegation; |
bd7bf9d5 | 199 | fmode_t delegation_state; |
1da177e4 | 200 | struct rw_semaphore rwsem; |
e5e94017 BH |
201 | |
202 | /* pNFS layout information */ | |
203 | struct pnfs_layout_hdr *layout; | |
1da177e4 | 204 | #endif /* CONFIG_NFS_V4*/ |
2701d086 AA |
205 | /* how many bytes have been written/read and how many bytes queued up */ |
206 | __u64 write_io; | |
207 | __u64 read_io; | |
ef79c097 DH |
208 | #ifdef CONFIG_NFS_FSCACHE |
209 | struct fscache_cookie *fscache; | |
210 | #endif | |
1da177e4 LT |
211 | struct inode vfs_inode; |
212 | }; | |
213 | ||
214 | /* | |
55296809 | 215 | * Cache validity bit flags |
1da177e4 | 216 | */ |
55296809 CL |
217 | #define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */ |
218 | #define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */ | |
219 | #define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */ | |
220 | #define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ | |
221 | #define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ | |
222 | #define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ | |
412c77ce | 223 | #define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */ |
55296809 CL |
224 | |
225 | /* | |
412d582e | 226 | * Bit offsets in flags field |
55296809 | 227 | */ |
691beb13 TM |
228 | #define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */ |
229 | #define NFS_INO_STALE (1) /* possible stale inode */ | |
230 | #define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */ | |
72cb77f4 | 231 | #define NFS_INO_FLUSHING (4) /* inode is flushing out data */ |
ef79c097 DH |
232 | #define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */ |
233 | #define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */ | |
71d0a611 | 234 | #define NFS_INO_COMMIT (7) /* inode is committing unstable writes */ |
863a3c6c | 235 | #define NFS_INO_LAYOUTCOMMIT (9) /* layoutcommit required */ |
92407e75 | 236 | #define NFS_INO_LAYOUTCOMMITTING (10) /* layoutcommit inflight */ |
1da177e4 | 237 | |
99fadcd7 | 238 | static inline struct nfs_inode *NFS_I(const struct inode *inode) |
1da177e4 LT |
239 | { |
240 | return container_of(inode, struct nfs_inode, vfs_inode); | |
241 | } | |
99fadcd7 BH |
242 | |
243 | static inline struct nfs_server *NFS_SB(const struct super_block *s) | |
244 | { | |
245 | return (struct nfs_server *)(s->s_fs_info); | |
246 | } | |
247 | ||
248 | static inline struct nfs_fh *NFS_FH(const struct inode *inode) | |
249 | { | |
250 | return &NFS_I(inode)->fh; | |
251 | } | |
252 | ||
253 | static inline struct nfs_server *NFS_SERVER(const struct inode *inode) | |
254 | { | |
255 | return NFS_SB(inode->i_sb); | |
256 | } | |
257 | ||
258 | static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode) | |
259 | { | |
260 | return NFS_SERVER(inode)->client; | |
261 | } | |
262 | ||
263 | static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode) | |
264 | { | |
265 | return NFS_SERVER(inode)->nfs_client->rpc_ops; | |
266 | } | |
267 | ||
99fadcd7 BH |
268 | static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode) |
269 | { | |
270 | struct nfs_server *nfss = NFS_SERVER(inode); | |
271 | return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin; | |
272 | } | |
273 | ||
274 | static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode) | |
275 | { | |
276 | struct nfs_server *nfss = NFS_SERVER(inode); | |
277 | return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax; | |
278 | } | |
279 | ||
280 | static inline int NFS_STALE(const struct inode *inode) | |
281 | { | |
282 | return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags); | |
283 | } | |
284 | ||
ef79c097 DH |
285 | static inline int NFS_FSCACHE(const struct inode *inode) |
286 | { | |
287 | return test_bit(NFS_INO_FSCACHE, &NFS_I(inode)->flags); | |
288 | } | |
289 | ||
99fadcd7 BH |
290 | static inline __u64 NFS_FILEID(const struct inode *inode) |
291 | { | |
292 | return NFS_I(inode)->fileid; | |
293 | } | |
294 | ||
295 | static inline void set_nfs_fileid(struct inode *inode, __u64 fileid) | |
296 | { | |
297 | NFS_I(inode)->fileid = fileid; | |
298 | } | |
1da177e4 | 299 | |
decf491f TM |
300 | static inline void nfs_mark_for_revalidate(struct inode *inode) |
301 | { | |
38478b24 TM |
302 | struct nfs_inode *nfsi = NFS_I(inode); |
303 | ||
decf491f | 304 | spin_lock(&inode->i_lock); |
38478b24 | 305 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS; |
f3821110 | 306 | if (S_ISDIR(inode->i_mode)) |
38478b24 | 307 | nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
decf491f TM |
308 | spin_unlock(&inode->i_lock); |
309 | } | |
310 | ||
1da177e4 LT |
311 | static inline int nfs_server_capable(struct inode *inode, int cap) |
312 | { | |
313 | return NFS_SERVER(inode)->caps & cap; | |
314 | } | |
315 | ||
d75340cc TM |
316 | static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf) |
317 | { | |
318 | dentry->d_time = verf; | |
319 | } | |
320 | ||
1da177e4 LT |
321 | /** |
322 | * nfs_save_change_attribute - Returns the inode attribute change cookie | |
8edb0182 | 323 | * @dir - pointer to parent directory inode |
1da177e4 LT |
324 | * The "change attribute" is updated every time we finish an operation |
325 | * that will result in a metadata change on the server. | |
326 | */ | |
8edb0182 | 327 | static inline unsigned long nfs_save_change_attribute(struct inode *dir) |
1da177e4 | 328 | { |
8edb0182 | 329 | return NFS_I(dir)->cache_change_attribute; |
1da177e4 LT |
330 | } |
331 | ||
332 | /** | |
4b841736 TM |
333 | * nfs_verify_change_attribute - Detects NFS remote directory changes |
334 | * @dir - pointer to parent directory inode | |
1da177e4 | 335 | * @chattr - previously saved change attribute |
4b841736 TM |
336 | * Return "false" if the verifiers doesn't match the change attribute. |
337 | * This would usually indicate that the directory contents have changed on | |
338 | * the server, and that any dentries need revalidating. | |
1da177e4 | 339 | */ |
4b841736 | 340 | static inline int nfs_verify_change_attribute(struct inode *dir, unsigned long chattr) |
1da177e4 | 341 | { |
4b841736 | 342 | return chattr == NFS_I(dir)->cache_change_attribute; |
1da177e4 LT |
343 | } |
344 | ||
345 | /* | |
346 | * linux/fs/nfs/inode.c | |
347 | */ | |
29884df0 | 348 | extern int nfs_sync_mapping(struct address_space *mapping); |
cd9ae2b6 | 349 | extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping); |
1da177e4 | 350 | extern void nfs_zap_caches(struct inode *); |
c4812998 | 351 | extern void nfs_invalidate_atime(struct inode *); |
1da177e4 LT |
352 | extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, |
353 | struct nfs_fattr *); | |
354 | extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); | |
decf491f | 355 | extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); |
70ca8852 | 356 | extern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr); |
1da177e4 | 357 | extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
10556cb2 | 358 | extern int nfs_permission(struct inode *, int); |
1da177e4 LT |
359 | extern int nfs_open(struct inode *, struct file *); |
360 | extern int nfs_release(struct inode *, struct file *); | |
361 | extern int nfs_attribute_timeout(struct inode *inode); | |
362 | extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); | |
363 | extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); | |
44b11874 | 364 | extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); |
1da177e4 | 365 | extern int nfs_setattr(struct dentry *, struct iattr *); |
65e4308d | 366 | extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr); |
1da177e4 LT |
367 | extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); |
368 | extern void put_nfs_open_context(struct nfs_open_context *ctx); | |
dc0b027d | 369 | extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode); |
5ede7b1c | 370 | extern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f_mode); |
cd9a1c0e | 371 | extern void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx); |
f11ac8db TM |
372 | extern struct nfs_lock_context *nfs_get_lock_context(struct nfs_open_context *ctx); |
373 | extern void nfs_put_lock_context(struct nfs_lock_context *l_ctx); | |
f43bf0be | 374 | extern u64 nfs_compat_user_ino64(u64 fileid); |
4704f0e2 | 375 | extern void nfs_fattr_init(struct nfs_fattr *fattr); |
56463e50 | 376 | extern unsigned long nfs_inc_attr_generation_counter(void); |
1da177e4 | 377 | |
2d36bfde TM |
378 | extern struct nfs_fattr *nfs_alloc_fattr(void); |
379 | ||
380 | static inline void nfs_free_fattr(const struct nfs_fattr *fattr) | |
381 | { | |
382 | kfree(fattr); | |
383 | } | |
384 | ||
385 | extern struct nfs_fh *nfs_alloc_fhandle(void); | |
386 | ||
387 | static inline void nfs_free_fhandle(const struct nfs_fh *fh) | |
388 | { | |
389 | kfree(fh); | |
390 | } | |
391 | ||
e27d359e | 392 | #ifdef NFS_DEBUG |
d8e0539e WAA |
393 | extern u32 _nfs_display_fhandle_hash(const struct nfs_fh *fh); |
394 | static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh) | |
395 | { | |
396 | return _nfs_display_fhandle_hash(fh); | |
397 | } | |
20d27e92 CL |
398 | extern void _nfs_display_fhandle(const struct nfs_fh *fh, const char *caption); |
399 | #define nfs_display_fhandle(fh, caption) \ | |
400 | do { \ | |
401 | if (unlikely(nfs_debug & NFSDBG_FACILITY)) \ | |
402 | _nfs_display_fhandle(fh, caption); \ | |
403 | } while (0) | |
404 | #else | |
d8e0539e WAA |
405 | static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh) |
406 | { | |
9304a812 | 407 | return 0; |
d8e0539e | 408 | } |
20d27e92 CL |
409 | static inline void nfs_display_fhandle(const struct nfs_fh *fh, |
410 | const char *caption) | |
411 | { | |
412 | } | |
413 | #endif | |
414 | ||
56463e50 CL |
415 | /* |
416 | * linux/fs/nfs/nfsroot.c | |
417 | */ | |
418 | extern int nfs_root_data(char **root_device, char **root_data); /*__init*/ | |
1da177e4 | 419 | /* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ |
5a874db4 | 420 | extern __be32 root_nfs_parse_addr(char *name); /*__init*/ |
0e574af1 | 421 | |
1da177e4 LT |
422 | /* |
423 | * linux/fs/nfs/file.c | |
424 | */ | |
4b6f5d20 | 425 | extern const struct file_operations nfs_file_operations; |
89d77c8f | 426 | #if IS_ENABLED(CONFIG_NFS_V4) |
1788ea6e JL |
427 | extern const struct file_operations nfs4_file_operations; |
428 | #endif /* CONFIG_NFS_V4 */ | |
f5e54d6e | 429 | extern const struct address_space_operations nfs_file_aops; |
11de3b11 | 430 | extern const struct address_space_operations nfs_dir_aops; |
1da177e4 | 431 | |
c03025d5 TM |
432 | static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) |
433 | { | |
434 | return filp->private_data; | |
435 | } | |
436 | ||
1da177e4 LT |
437 | static inline struct rpc_cred *nfs_file_cred(struct file *file) |
438 | { | |
504e5189 NB |
439 | if (file != NULL) { |
440 | struct nfs_open_context *ctx = | |
441 | nfs_file_open_context(file); | |
442 | if (ctx) | |
443 | return ctx->cred; | |
444 | } | |
1da177e4 LT |
445 | return NULL; |
446 | } | |
447 | ||
b7fa0554 AG |
448 | /* |
449 | * linux/fs/nfs/xattr.c | |
450 | */ | |
451 | #ifdef CONFIG_NFS_V3_ACL | |
452 | extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); | |
453 | extern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t); | |
454 | extern int nfs3_setxattr(struct dentry *, const char *, | |
455 | const void *, size_t, int); | |
456 | extern int nfs3_removexattr (struct dentry *, const char *name); | |
457 | #else | |
458 | # define nfs3_listxattr NULL | |
459 | # define nfs3_getxattr NULL | |
460 | # define nfs3_setxattr NULL | |
461 | # define nfs3_removexattr NULL | |
462 | #endif | |
463 | ||
1da177e4 LT |
464 | /* |
465 | * linux/fs/nfs/direct.c | |
466 | */ | |
467 | extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, | |
468 | unsigned long); | |
027445c3 BP |
469 | extern ssize_t nfs_file_direct_read(struct kiocb *iocb, |
470 | const struct iovec *iov, unsigned long nr_segs, | |
a564b8f0 | 471 | loff_t pos, bool uio); |
027445c3 BP |
472 | extern ssize_t nfs_file_direct_write(struct kiocb *iocb, |
473 | const struct iovec *iov, unsigned long nr_segs, | |
a564b8f0 | 474 | loff_t pos, bool uio); |
1da177e4 LT |
475 | |
476 | /* | |
477 | * linux/fs/nfs/dir.c | |
478 | */ | |
4b6f5d20 | 479 | extern const struct file_operations nfs_dir_operations; |
f786aa90 | 480 | extern const struct dentry_operations nfs_dentry_operations; |
1da177e4 | 481 | |
bfc69a45 | 482 | extern void nfs_force_lookup_revalidate(struct inode *dir); |
1da177e4 | 483 | extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); |
af22f94a TM |
484 | extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags); |
485 | extern void nfs_access_zap_cache(struct inode *inode); | |
1da177e4 LT |
486 | |
487 | /* | |
488 | * linux/fs/nfs/symlink.c | |
489 | */ | |
c5ef1c42 | 490 | extern const struct inode_operations nfs_symlink_inode_operations; |
1da177e4 | 491 | |
a72b4422 TM |
492 | /* |
493 | * linux/fs/nfs/sysctl.c | |
494 | */ | |
495 | #ifdef CONFIG_SYSCTL | |
496 | extern int nfs_register_sysctl(void); | |
497 | extern void nfs_unregister_sysctl(void); | |
498 | #else | |
7fd105e7 | 499 | #define nfs_register_sysctl() 0 |
a72b4422 TM |
500 | #define nfs_unregister_sysctl() do { } while(0) |
501 | #endif | |
502 | ||
55a97593 TM |
503 | /* |
504 | * linux/fs/nfs/namespace.c | |
505 | */ | |
c5ef1c42 AV |
506 | extern const struct inode_operations nfs_mountpoint_inode_operations; |
507 | extern const struct inode_operations nfs_referral_inode_operations; | |
51d8fa6a TM |
508 | extern int nfs_mountpoint_expiry_timeout; |
509 | extern void nfs_release_automount_timer(void); | |
55a97593 | 510 | |
1da177e4 LT |
511 | /* |
512 | * linux/fs/nfs/unlink.c | |
513 | */ | |
e4eff1a6 | 514 | extern void nfs_complete_unlink(struct dentry *dentry, struct inode *); |
565277f6 TM |
515 | extern void nfs_block_sillyrename(struct dentry *dentry); |
516 | extern void nfs_unblock_sillyrename(struct dentry *dentry); | |
779c5179 | 517 | extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry); |
1da177e4 LT |
518 | |
519 | /* | |
520 | * linux/fs/nfs/write.c | |
521 | */ | |
89a09141 | 522 | extern int nfs_congestion_kb; |
1da177e4 LT |
523 | extern int nfs_writepage(struct page *page, struct writeback_control *wbc); |
524 | extern int nfs_writepages(struct address_space *, struct writeback_control *); | |
525 | extern int nfs_flush_incompatible(struct file *file, struct page *page); | |
526 | extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); | |
13602896 | 527 | extern void nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); |
1da177e4 LT |
528 | |
529 | /* | |
530 | * Try to write back everything synchronously (but check the | |
531 | * return value!) | |
532 | */ | |
1c75950b TM |
533 | extern int nfs_wb_all(struct inode *inode); |
534 | extern int nfs_wb_page(struct inode *inode, struct page* page); | |
1b3b4a1a | 535 | extern int nfs_wb_page_cancel(struct inode *inode, struct page* page); |
89d77c8f | 536 | #if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) |
b608b283 | 537 | extern int nfs_commit_inode(struct inode *, int); |
0b7c0153 FI |
538 | extern struct nfs_commit_data *nfs_commitdata_alloc(void); |
539 | extern void nfs_commit_free(struct nfs_commit_data *data); | |
77a63f3d TM |
540 | #else |
541 | static inline int | |
542 | nfs_commit_inode(struct inode *inode, int how) | |
543 | { | |
544 | return 0; | |
545 | } | |
1da177e4 LT |
546 | #endif |
547 | ||
548 | static inline int | |
549 | nfs_have_writebacks(struct inode *inode) | |
550 | { | |
551 | return NFS_I(inode)->npages != 0; | |
552 | } | |
553 | ||
1da177e4 LT |
554 | /* |
555 | * linux/fs/nfs/read.c | |
556 | */ | |
557 | extern int nfs_readpage(struct file *, struct page *); | |
558 | extern int nfs_readpages(struct file *, struct address_space *, | |
559 | struct list_head *, unsigned); | |
ec06c096 | 560 | extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); |
f42b293d DH |
561 | extern int nfs_readpage_async(struct nfs_open_context *, struct inode *, |
562 | struct page *); | |
963d8fe5 | 563 | |
b7fa0554 AG |
564 | /* |
565 | * linux/fs/nfs3proc.c | |
566 | */ | |
567 | #ifdef CONFIG_NFS_V3_ACL | |
568 | extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); | |
569 | extern int nfs3_proc_setacl(struct inode *inode, int type, | |
570 | struct posix_acl *acl); | |
055ffbea | 571 | extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, |
d3fb6120 | 572 | umode_t mode); |
5c6a9f7d | 573 | extern void nfs3_forget_cached_acls(struct inode *inode); |
055ffbea AG |
574 | #else |
575 | static inline int nfs3_proc_set_default_acl(struct inode *dir, | |
576 | struct inode *inode, | |
d3fb6120 | 577 | umode_t mode) |
055ffbea AG |
578 | { |
579 | return 0; | |
580 | } | |
5c6a9f7d AG |
581 | |
582 | static inline void nfs3_forget_cached_acls(struct inode *inode) | |
583 | { | |
584 | } | |
b7fa0554 AG |
585 | #endif /* CONFIG_NFS_V3_ACL */ |
586 | ||
1da177e4 LT |
587 | /* |
588 | * inline functions | |
589 | */ | |
590 | ||
433c9237 | 591 | static inline loff_t nfs_size_to_loff_t(__u64 size) |
1da177e4 | 592 | { |
433c9237 CL |
593 | if (size > (__u64) OFFSET_MAX - 1) |
594 | return OFFSET_MAX - 1; | |
1da177e4 LT |
595 | return (loff_t) size; |
596 | } | |
597 | ||
598 | static inline ino_t | |
599 | nfs_fileid_to_ino_t(u64 fileid) | |
600 | { | |
601 | ino_t ino = (ino_t) fileid; | |
602 | if (sizeof(ino_t) < sizeof(u64)) | |
603 | ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; | |
604 | return ino; | |
605 | } | |
606 | ||
1da177e4 LT |
607 | #define NFS_JUKEBOX_RETRY_TIME (5 * HZ) |
608 | ||
1da177e4 LT |
609 | #endif /* __KERNEL__ */ |
610 | ||
611 | /* | |
612 | * NFS debug flags | |
613 | */ | |
614 | #define NFSDBG_VFS 0x0001 | |
615 | #define NFSDBG_DIRCACHE 0x0002 | |
616 | #define NFSDBG_LOOKUPCACHE 0x0004 | |
617 | #define NFSDBG_PAGECACHE 0x0008 | |
618 | #define NFSDBG_PROC 0x0010 | |
619 | #define NFSDBG_XDR 0x0020 | |
620 | #define NFSDBG_FILE 0x0040 | |
621 | #define NFSDBG_ROOT 0x0080 | |
622 | #define NFSDBG_CALLBACK 0x0100 | |
24c8dbbb | 623 | #define NFSDBG_CLIENT 0x0200 |
f1828993 | 624 | #define NFSDBG_MOUNT 0x0400 |
c6a6f19e | 625 | #define NFSDBG_FSCACHE 0x0800 |
85e174ba | 626 | #define NFSDBG_PNFS 0x1000 |
7ab672ce | 627 | #define NFSDBG_PNFS_LD 0x2000 |
e3c0fb7e | 628 | #define NFSDBG_STATE 0x4000 |
1da177e4 LT |
629 | #define NFSDBG_ALL 0xFFFF |
630 | ||
631 | #ifdef __KERNEL__ | |
4dc2eaec | 632 | |
1da177e4 LT |
633 | # undef ifdebug |
634 | # ifdef NFS_DEBUG | |
635 | # define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) | |
6f00866d | 636 | # define NFS_IFDEBUG(x) x |
1da177e4 LT |
637 | # else |
638 | # define ifdebug(fac) if (0) | |
6f00866d | 639 | # define NFS_IFDEBUG(x) |
1da177e4 LT |
640 | # endif |
641 | #endif /* __KERNEL */ | |
642 | ||
643 | #endif |