Commit | Line | Data |
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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 CL |
14 | /* Default timeout values */ |
15 | #define NFS_MAX_UDP_TIMEOUT (60*HZ) | |
16 | #define NFS_MAX_TCP_TIMEOUT (600*HZ) | |
17 | ||
1da177e4 LT |
18 | /* |
19 | * When flushing a cluster of dirty pages, there can be different | |
20 | * strategies: | |
21 | */ | |
1da177e4 | 22 | #define FLUSH_SYNC 1 /* file being synced, or contention */ |
1da177e4 LT |
23 | #define FLUSH_STABLE 4 /* commit to stable storage */ |
24 | #define FLUSH_LOWPRI 8 /* low priority background flush */ | |
25 | #define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */ | |
70b9ecbd | 26 | #define FLUSH_NOCOMMIT 32 /* Don't send the NFSv3/v4 COMMIT */ |
d2ccddf0 | 27 | #define FLUSH_INVALIDATE 64 /* Invalidate the page cache */ |
4d770ccf | 28 | #define FLUSH_NOWRITEPAGE 128 /* Don't call writepage() */ |
1da177e4 LT |
29 | |
30 | #ifdef __KERNEL__ | |
31 | ||
7f1cbe51 DW |
32 | #include <linux/in.h> |
33 | #include <linux/mm.h> | |
88be9f99 | 34 | #include <linux/namei.h> |
7f1cbe51 | 35 | #include <linux/pagemap.h> |
1c3c07e9 | 36 | #include <linux/rbtree.h> |
7f1cbe51 DW |
37 | #include <linux/rwsem.h> |
38 | #include <linux/wait.h> | |
39 | ||
40 | #include <linux/sunrpc/debug.h> | |
41 | #include <linux/sunrpc/auth.h> | |
42 | #include <linux/sunrpc/clnt.h> | |
43 | ||
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs2.h> | |
46 | #include <linux/nfs3.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_xdr.h> | |
49 | ||
50 | #include <linux/nfs_fs_sb.h> | |
51 | ||
52 | #include <linux/rwsem.h> | |
53 | #include <linux/mempool.h> | |
54 | ||
55 | /* | |
56 | * These are the default flags for swap requests | |
57 | */ | |
58 | #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) | |
59 | ||
1da177e4 LT |
60 | /* |
61 | * NFSv3/v4 Access mode cache entry | |
62 | */ | |
63 | struct nfs_access_entry { | |
1c3c07e9 | 64 | struct rb_node rb_node; |
cfcea3e8 | 65 | struct list_head lru; |
1da177e4 LT |
66 | unsigned long jiffies; |
67 | struct rpc_cred * cred; | |
68 | int mask; | |
69 | }; | |
70 | ||
71 | struct nfs4_state; | |
72 | struct nfs_open_context { | |
73 | atomic_t count; | |
88be9f99 | 74 | struct path path; |
1da177e4 LT |
75 | struct rpc_cred *cred; |
76 | struct nfs4_state *state; | |
77 | fl_owner_t lockowner; | |
78 | int mode; | |
79 | int error; | |
80 | ||
81 | struct list_head list; | |
00a92642 | 82 | |
00a92642 | 83 | __u64 dir_cookie; |
1da177e4 LT |
84 | }; |
85 | ||
86 | /* | |
87 | * NFSv4 delegation | |
88 | */ | |
89 | struct nfs_delegation; | |
90 | ||
5c6a9f7d AG |
91 | struct posix_acl; |
92 | ||
1da177e4 LT |
93 | /* |
94 | * nfs fs inode data in memory | |
95 | */ | |
96 | struct nfs_inode { | |
97 | /* | |
98 | * The 64bit 'inode number' | |
99 | */ | |
100 | __u64 fileid; | |
101 | ||
102 | /* | |
103 | * NFS file handle | |
104 | */ | |
105 | struct nfs_fh fh; | |
106 | ||
107 | /* | |
108 | * Various flags | |
109 | */ | |
412d582e CL |
110 | unsigned long flags; /* atomic bit ops */ |
111 | unsigned long cache_validity; /* bit mask */ | |
1da177e4 LT |
112 | |
113 | /* | |
24bd68f4 | 114 | * read_cache_jiffies is when we started read-caching this inode. |
1da177e4 LT |
115 | * attrtimeo is for how long the cached information is assumed |
116 | * to be valid. A successful attribute revalidation doubles | |
117 | * attrtimeo (up to acregmax/acdirmax), a failure resets it to | |
118 | * acregmin/acdirmin. | |
119 | * | |
120 | * We need to revalidate the cached attrs for this inode if | |
121 | * | |
122 | * jiffies - read_cache_jiffies > attrtimeo | |
1da177e4 | 123 | */ |
1da177e4 LT |
124 | unsigned long read_cache_jiffies; |
125 | unsigned long attrtimeo; | |
126 | unsigned long attrtimeo_timestamp; | |
127 | __u64 change_attr; /* v4 only */ | |
128 | ||
33801147 | 129 | unsigned long last_updated; |
1da177e4 LT |
130 | /* "Generation counter" for the attribute cache. This is |
131 | * bumped whenever we update the metadata on the | |
132 | * server. | |
133 | */ | |
134 | unsigned long cache_change_attribute; | |
135 | /* | |
136 | * Counter indicating the number of outstanding requests that | |
137 | * will cause a file data update. | |
138 | */ | |
139 | atomic_t data_updates; | |
140 | ||
1c3c07e9 | 141 | struct rb_root access_cache; |
cfcea3e8 TM |
142 | struct list_head access_cache_entry_lru; |
143 | struct list_head access_cache_inode_lru; | |
5c6a9f7d AG |
144 | #ifdef CONFIG_NFS_V3_ACL |
145 | struct posix_acl *acl_access; | |
146 | struct posix_acl *acl_default; | |
147 | #endif | |
1da177e4 LT |
148 | |
149 | /* | |
150 | * This is the cookie verifier used for NFSv3 readdir | |
151 | * operations | |
152 | */ | |
bc4785cd | 153 | __be32 cookieverf[2]; |
1da177e4 LT |
154 | |
155 | /* | |
156 | * This is the list of dirty unwritten pages. | |
157 | */ | |
158 | spinlock_t req_lock; | |
1da177e4 LT |
159 | struct radix_tree_root nfs_page_tree; |
160 | ||
dce34ce2 | 161 | unsigned long ncommit, |
1da177e4 LT |
162 | npages; |
163 | ||
164 | /* Open contexts for shared mmap writes */ | |
165 | struct list_head open_files; | |
166 | ||
1da177e4 | 167 | #ifdef CONFIG_NFS_V4 |
e50a1c2e | 168 | struct nfs4_cached_acl *nfs4_acl; |
1da177e4 LT |
169 | /* NFSv4 state */ |
170 | struct list_head open_states; | |
171 | struct nfs_delegation *delegation; | |
172 | int delegation_state; | |
173 | struct rw_semaphore rwsem; | |
174 | #endif /* CONFIG_NFS_V4*/ | |
1da177e4 LT |
175 | struct inode vfs_inode; |
176 | }; | |
177 | ||
178 | /* | |
55296809 | 179 | * Cache validity bit flags |
1da177e4 | 180 | */ |
55296809 CL |
181 | #define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */ |
182 | #define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */ | |
183 | #define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */ | |
184 | #define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ | |
185 | #define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ | |
186 | #define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ | |
187 | ||
188 | /* | |
412d582e | 189 | * Bit offsets in flags field |
55296809 | 190 | */ |
412d582e CL |
191 | #define NFS_INO_REVALIDATING (0) /* revalidating attrs */ |
192 | #define NFS_INO_ADVISE_RDPLUS (1) /* advise readdirplus */ | |
193 | #define NFS_INO_STALE (2) /* possible stale inode */ | |
cfcea3e8 | 194 | #define NFS_INO_ACL_LRU_SET (3) /* Inode is on the LRU list */ |
1da177e4 LT |
195 | |
196 | static inline struct nfs_inode *NFS_I(struct inode *inode) | |
197 | { | |
198 | return container_of(inode, struct nfs_inode, vfs_inode); | |
199 | } | |
200 | #define NFS_SB(s) ((struct nfs_server *)(s->s_fs_info)) | |
201 | ||
202 | #define NFS_FH(inode) (&NFS_I(inode)->fh) | |
203 | #define NFS_SERVER(inode) (NFS_SB(inode->i_sb)) | |
204 | #define NFS_CLIENT(inode) (NFS_SERVER(inode)->client) | |
8fa5c000 | 205 | #define NFS_PROTO(inode) (NFS_SERVER(inode)->nfs_client->rpc_ops) |
1da177e4 LT |
206 | #define NFS_COOKIEVERF(inode) (NFS_I(inode)->cookieverf) |
207 | #define NFS_READTIME(inode) (NFS_I(inode)->read_cache_jiffies) | |
208 | #define NFS_CHANGE_ATTR(inode) (NFS_I(inode)->change_attr) | |
209 | #define NFS_ATTRTIMEO(inode) (NFS_I(inode)->attrtimeo) | |
210 | #define NFS_MINATTRTIMEO(inode) \ | |
211 | (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmin \ | |
212 | : NFS_SERVER(inode)->acregmin) | |
213 | #define NFS_MAXATTRTIMEO(inode) \ | |
214 | (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmax \ | |
215 | : NFS_SERVER(inode)->acregmax) | |
216 | #define NFS_ATTRTIMEO_UPDATE(inode) (NFS_I(inode)->attrtimeo_timestamp) | |
217 | ||
218 | #define NFS_FLAGS(inode) (NFS_I(inode)->flags) | |
412d582e | 219 | #define NFS_STALE(inode) (test_bit(NFS_INO_STALE, &NFS_FLAGS(inode))) |
1da177e4 LT |
220 | |
221 | #define NFS_FILEID(inode) (NFS_I(inode)->fileid) | |
222 | ||
223 | static inline int nfs_caches_unstable(struct inode *inode) | |
224 | { | |
225 | return atomic_read(&NFS_I(inode)->data_updates) != 0; | |
226 | } | |
227 | ||
decf491f TM |
228 | static inline void nfs_mark_for_revalidate(struct inode *inode) |
229 | { | |
38478b24 TM |
230 | struct nfs_inode *nfsi = NFS_I(inode); |
231 | ||
decf491f | 232 | spin_lock(&inode->i_lock); |
38478b24 TM |
233 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS; |
234 | if (S_ISDIR(inode->i_mode)) | |
235 | nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; | |
decf491f TM |
236 | spin_unlock(&inode->i_lock); |
237 | } | |
238 | ||
1da177e4 LT |
239 | static inline void NFS_CACHEINV(struct inode *inode) |
240 | { | |
decf491f TM |
241 | if (!nfs_caches_unstable(inode)) |
242 | nfs_mark_for_revalidate(inode); | |
1da177e4 LT |
243 | } |
244 | ||
245 | static inline int nfs_server_capable(struct inode *inode, int cap) | |
246 | { | |
247 | return NFS_SERVER(inode)->caps & cap; | |
248 | } | |
249 | ||
250 | static inline int NFS_USE_READDIRPLUS(struct inode *inode) | |
251 | { | |
412d582e | 252 | return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode)); |
1da177e4 LT |
253 | } |
254 | ||
255 | /** | |
256 | * nfs_save_change_attribute - Returns the inode attribute change cookie | |
257 | * @inode - pointer to inode | |
258 | * The "change attribute" is updated every time we finish an operation | |
259 | * that will result in a metadata change on the server. | |
260 | */ | |
261 | static inline long nfs_save_change_attribute(struct inode *inode) | |
262 | { | |
263 | return NFS_I(inode)->cache_change_attribute; | |
264 | } | |
265 | ||
266 | /** | |
267 | * nfs_verify_change_attribute - Detects NFS inode cache updates | |
268 | * @inode - pointer to inode | |
269 | * @chattr - previously saved change attribute | |
270 | * Return "false" if metadata has been updated (or is in the process of | |
271 | * being updated) since the change attribute was saved. | |
272 | */ | |
273 | static inline int nfs_verify_change_attribute(struct inode *inode, unsigned long chattr) | |
274 | { | |
275 | return !nfs_caches_unstable(inode) | |
913a70fc | 276 | && time_after_eq(chattr, NFS_I(inode)->cache_change_attribute); |
1da177e4 LT |
277 | } |
278 | ||
279 | /* | |
280 | * linux/fs/nfs/inode.c | |
281 | */ | |
29884df0 | 282 | extern int nfs_sync_mapping(struct address_space *mapping); |
cd9ae2b6 | 283 | extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping); |
1da177e4 LT |
284 | extern void nfs_zap_caches(struct inode *); |
285 | extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, | |
286 | struct nfs_fattr *); | |
287 | extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); | |
decf491f | 288 | extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); |
1da177e4 LT |
289 | extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
290 | extern int nfs_permission(struct inode *, int, struct nameidata *); | |
291 | extern int nfs_access_get_cached(struct inode *, struct rpc_cred *, struct nfs_access_entry *); | |
292 | extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *); | |
1c3c07e9 | 293 | extern void nfs_access_zap_cache(struct inode *inode); |
1da177e4 LT |
294 | extern int nfs_open(struct inode *, struct file *); |
295 | extern int nfs_release(struct inode *, struct file *); | |
296 | extern int nfs_attribute_timeout(struct inode *inode); | |
297 | extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); | |
298 | extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); | |
44b11874 | 299 | extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); |
717d44e8 | 300 | extern int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping); |
1da177e4 | 301 | extern int nfs_setattr(struct dentry *, struct iattr *); |
65e4308d | 302 | extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr); |
1da177e4 LT |
303 | extern void nfs_begin_attr_update(struct inode *); |
304 | extern void nfs_end_attr_update(struct inode *); | |
305 | extern void nfs_begin_data_update(struct inode *); | |
306 | extern void nfs_end_data_update(struct inode *); | |
1da177e4 LT |
307 | extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); |
308 | extern void put_nfs_open_context(struct nfs_open_context *ctx); | |
d530838b | 309 | extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode); |
1da177e4 LT |
310 | |
311 | /* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ | |
5a874db4 | 312 | extern __be32 root_nfs_parse_addr(char *name); /*__init*/ |
1da177e4 | 313 | |
0e574af1 TM |
314 | static inline void nfs_fattr_init(struct nfs_fattr *fattr) |
315 | { | |
316 | fattr->valid = 0; | |
33801147 | 317 | fattr->time_start = jiffies; |
0e574af1 TM |
318 | } |
319 | ||
1da177e4 LT |
320 | /* |
321 | * linux/fs/nfs/file.c | |
322 | */ | |
c5ef1c42 | 323 | extern const struct inode_operations nfs_file_inode_operations; |
b7fa0554 | 324 | #ifdef CONFIG_NFS_V3 |
c5ef1c42 | 325 | extern const struct inode_operations nfs3_file_inode_operations; |
b7fa0554 | 326 | #endif /* CONFIG_NFS_V3 */ |
4b6f5d20 | 327 | extern const struct file_operations nfs_file_operations; |
f5e54d6e | 328 | extern const struct address_space_operations nfs_file_aops; |
1da177e4 LT |
329 | |
330 | static inline struct rpc_cred *nfs_file_cred(struct file *file) | |
331 | { | |
332 | if (file != NULL) { | |
333 | struct nfs_open_context *ctx; | |
334 | ||
335 | ctx = (struct nfs_open_context*)file->private_data; | |
336 | return ctx->cred; | |
337 | } | |
338 | return NULL; | |
339 | } | |
340 | ||
b7fa0554 AG |
341 | /* |
342 | * linux/fs/nfs/xattr.c | |
343 | */ | |
344 | #ifdef CONFIG_NFS_V3_ACL | |
345 | extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); | |
346 | extern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t); | |
347 | extern int nfs3_setxattr(struct dentry *, const char *, | |
348 | const void *, size_t, int); | |
349 | extern int nfs3_removexattr (struct dentry *, const char *name); | |
350 | #else | |
351 | # define nfs3_listxattr NULL | |
352 | # define nfs3_getxattr NULL | |
353 | # define nfs3_setxattr NULL | |
354 | # define nfs3_removexattr NULL | |
355 | #endif | |
356 | ||
1da177e4 LT |
357 | /* |
358 | * linux/fs/nfs/direct.c | |
359 | */ | |
360 | extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, | |
361 | unsigned long); | |
027445c3 BP |
362 | extern ssize_t nfs_file_direct_read(struct kiocb *iocb, |
363 | const struct iovec *iov, unsigned long nr_segs, | |
364 | loff_t pos); | |
365 | extern ssize_t nfs_file_direct_write(struct kiocb *iocb, | |
366 | const struct iovec *iov, unsigned long nr_segs, | |
367 | loff_t pos); | |
1da177e4 LT |
368 | |
369 | /* | |
370 | * linux/fs/nfs/dir.c | |
371 | */ | |
c5ef1c42 | 372 | extern const struct inode_operations nfs_dir_inode_operations; |
b7fa0554 | 373 | #ifdef CONFIG_NFS_V3 |
c5ef1c42 | 374 | extern const struct inode_operations nfs3_dir_inode_operations; |
b7fa0554 | 375 | #endif /* CONFIG_NFS_V3 */ |
4b6f5d20 | 376 | extern const struct file_operations nfs_dir_operations; |
1da177e4 LT |
377 | extern struct dentry_operations nfs_dentry_operations; |
378 | ||
379 | extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); | |
380 | ||
381 | /* | |
382 | * linux/fs/nfs/symlink.c | |
383 | */ | |
c5ef1c42 | 384 | extern const struct inode_operations nfs_symlink_inode_operations; |
1da177e4 | 385 | |
a72b4422 TM |
386 | /* |
387 | * linux/fs/nfs/sysctl.c | |
388 | */ | |
389 | #ifdef CONFIG_SYSCTL | |
390 | extern int nfs_register_sysctl(void); | |
391 | extern void nfs_unregister_sysctl(void); | |
392 | #else | |
7fd105e7 | 393 | #define nfs_register_sysctl() 0 |
a72b4422 TM |
394 | #define nfs_unregister_sysctl() do { } while(0) |
395 | #endif | |
396 | ||
55a97593 TM |
397 | /* |
398 | * linux/fs/nfs/namespace.c | |
399 | */ | |
51d8fa6a | 400 | extern struct list_head nfs_automount_list; |
c5ef1c42 AV |
401 | extern const struct inode_operations nfs_mountpoint_inode_operations; |
402 | extern const struct inode_operations nfs_referral_inode_operations; | |
51d8fa6a TM |
403 | extern int nfs_mountpoint_expiry_timeout; |
404 | extern void nfs_release_automount_timer(void); | |
55a97593 | 405 | |
1da177e4 LT |
406 | /* |
407 | * linux/fs/nfs/unlink.c | |
408 | */ | |
409 | extern int nfs_async_unlink(struct dentry *); | |
410 | extern void nfs_complete_unlink(struct dentry *); | |
411 | ||
412 | /* | |
413 | * linux/fs/nfs/write.c | |
414 | */ | |
89a09141 | 415 | extern int nfs_congestion_kb; |
1da177e4 LT |
416 | extern int nfs_writepage(struct page *page, struct writeback_control *wbc); |
417 | extern int nfs_writepages(struct address_space *, struct writeback_control *); | |
418 | extern int nfs_flush_incompatible(struct file *file, struct page *page); | |
419 | extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); | |
462d5b32 CL |
420 | extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); |
421 | extern void nfs_writedata_release(void *); | |
1a54533e | 422 | extern int nfs_set_page_dirty(struct page *); |
1da177e4 LT |
423 | |
424 | /* | |
425 | * Try to write back everything synchronously (but check the | |
426 | * return value!) | |
427 | */ | |
1c75950b TM |
428 | extern long nfs_sync_mapping_wait(struct address_space *, struct writeback_control *, int); |
429 | extern int nfs_sync_mapping_range(struct address_space *, loff_t, loff_t, int); | |
430 | extern int nfs_wb_all(struct inode *inode); | |
431 | extern int nfs_wb_page(struct inode *inode, struct page* page); | |
61822ab5 | 432 | extern int nfs_wb_page_priority(struct inode *inode, struct page* page, int how); |
1da177e4 | 433 | #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) |
3da28eb1 | 434 | extern int nfs_commit_inode(struct inode *, int); |
8aca67f0 TM |
435 | extern struct nfs_write_data *nfs_commit_alloc(void); |
436 | extern void nfs_commit_free(struct nfs_write_data *wdata); | |
fad61490 | 437 | extern void nfs_commit_release(void *wdata); |
1da177e4 LT |
438 | #else |
439 | static inline int | |
3da28eb1 | 440 | nfs_commit_inode(struct inode *inode, int how) |
1da177e4 LT |
441 | { |
442 | return 0; | |
443 | } | |
444 | #endif | |
445 | ||
446 | static inline int | |
447 | nfs_have_writebacks(struct inode *inode) | |
448 | { | |
449 | return NFS_I(inode)->npages != 0; | |
450 | } | |
451 | ||
1da177e4 | 452 | /* |
e4e20512 | 453 | * Allocate nfs_write_data structures |
1da177e4 | 454 | */ |
8d5658c9 | 455 | extern struct nfs_write_data *nfs_writedata_alloc(unsigned int npages); |
1da177e4 | 456 | |
1da177e4 LT |
457 | /* |
458 | * linux/fs/nfs/read.c | |
459 | */ | |
460 | extern int nfs_readpage(struct file *, struct page *); | |
461 | extern int nfs_readpages(struct file *, struct address_space *, | |
462 | struct list_head *, unsigned); | |
ec06c096 TM |
463 | extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); |
464 | extern void nfs_readdata_release(void *data); | |
963d8fe5 | 465 | |
1da177e4 | 466 | /* |
e4e20512 | 467 | * Allocate nfs_read_data structures |
1da177e4 | 468 | */ |
8d5658c9 | 469 | extern struct nfs_read_data *nfs_readdata_alloc(unsigned int npages); |
1da177e4 | 470 | |
b7fa0554 AG |
471 | /* |
472 | * linux/fs/nfs3proc.c | |
473 | */ | |
474 | #ifdef CONFIG_NFS_V3_ACL | |
475 | extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); | |
476 | extern int nfs3_proc_setacl(struct inode *inode, int type, | |
477 | struct posix_acl *acl); | |
055ffbea AG |
478 | extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, |
479 | mode_t mode); | |
5c6a9f7d | 480 | extern void nfs3_forget_cached_acls(struct inode *inode); |
055ffbea AG |
481 | #else |
482 | static inline int nfs3_proc_set_default_acl(struct inode *dir, | |
483 | struct inode *inode, | |
484 | mode_t mode) | |
485 | { | |
486 | return 0; | |
487 | } | |
5c6a9f7d AG |
488 | |
489 | static inline void nfs3_forget_cached_acls(struct inode *inode) | |
490 | { | |
491 | } | |
b7fa0554 AG |
492 | #endif /* CONFIG_NFS_V3_ACL */ |
493 | ||
1da177e4 LT |
494 | /* |
495 | * linux/fs/mount_clnt.c | |
496 | * (Used only by nfsroot module) | |
497 | */ | |
498 | extern int nfsroot_mount(struct sockaddr_in *, char *, struct nfs_fh *, | |
499 | int, int); | |
500 | ||
501 | /* | |
502 | * inline functions | |
503 | */ | |
504 | ||
505 | static inline loff_t | |
506 | nfs_size_to_loff_t(__u64 size) | |
507 | { | |
508 | loff_t maxsz = (((loff_t) ULONG_MAX) << PAGE_CACHE_SHIFT) + PAGE_CACHE_SIZE - 1; | |
509 | if (size > maxsz) | |
510 | return maxsz; | |
511 | return (loff_t) size; | |
512 | } | |
513 | ||
514 | static inline ino_t | |
515 | nfs_fileid_to_ino_t(u64 fileid) | |
516 | { | |
517 | ino_t ino = (ino_t) fileid; | |
518 | if (sizeof(ino_t) < sizeof(u64)) | |
519 | ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; | |
520 | return ino; | |
521 | } | |
522 | ||
523 | /* NFS root */ | |
524 | ||
525 | extern void * nfs_root_data(void); | |
526 | ||
527 | #define nfs_wait_event(clnt, wq, condition) \ | |
528 | ({ \ | |
529 | int __retval = 0; \ | |
530 | if (clnt->cl_intr) { \ | |
531 | sigset_t oldmask; \ | |
532 | rpc_clnt_sigmask(clnt, &oldmask); \ | |
533 | __retval = wait_event_interruptible(wq, condition); \ | |
534 | rpc_clnt_sigunmask(clnt, &oldmask); \ | |
535 | } else \ | |
536 | wait_event(wq, condition); \ | |
537 | __retval; \ | |
538 | }) | |
539 | ||
540 | #define NFS_JUKEBOX_RETRY_TIME (5 * HZ) | |
541 | ||
1da177e4 LT |
542 | #endif /* __KERNEL__ */ |
543 | ||
544 | /* | |
545 | * NFS debug flags | |
546 | */ | |
547 | #define NFSDBG_VFS 0x0001 | |
548 | #define NFSDBG_DIRCACHE 0x0002 | |
549 | #define NFSDBG_LOOKUPCACHE 0x0004 | |
550 | #define NFSDBG_PAGECACHE 0x0008 | |
551 | #define NFSDBG_PROC 0x0010 | |
552 | #define NFSDBG_XDR 0x0020 | |
553 | #define NFSDBG_FILE 0x0040 | |
554 | #define NFSDBG_ROOT 0x0080 | |
555 | #define NFSDBG_CALLBACK 0x0100 | |
24c8dbbb | 556 | #define NFSDBG_CLIENT 0x0200 |
1da177e4 LT |
557 | #define NFSDBG_ALL 0xFFFF |
558 | ||
559 | #ifdef __KERNEL__ | |
4dc2eaec BH |
560 | |
561 | /* | |
562 | * Enable debugging support for nfs client. | |
563 | * Requires RPC_DEBUG. | |
564 | */ | |
565 | #ifdef RPC_DEBUG | |
566 | # define NFS_DEBUG | |
567 | #endif | |
568 | ||
1da177e4 LT |
569 | # undef ifdebug |
570 | # ifdef NFS_DEBUG | |
571 | # define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) | |
572 | # else | |
573 | # define ifdebug(fac) if (0) | |
574 | # endif | |
575 | #endif /* __KERNEL */ | |
576 | ||
577 | #endif |