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 | ||
12 | #include <linux/config.h> | |
13 | #include <linux/in.h> | |
14 | #include <linux/mm.h> | |
15 | #include <linux/pagemap.h> | |
16 | #include <linux/rwsem.h> | |
17 | #include <linux/wait.h> | |
1da177e4 LT |
18 | |
19 | #include <linux/nfs_fs_sb.h> | |
20 | ||
21 | #include <linux/sunrpc/debug.h> | |
22 | #include <linux/sunrpc/auth.h> | |
23 | #include <linux/sunrpc/clnt.h> | |
24 | ||
25 | #include <linux/nfs.h> | |
26 | #include <linux/nfs2.h> | |
27 | #include <linux/nfs3.h> | |
28 | #include <linux/nfs4.h> | |
29 | #include <linux/nfs_xdr.h> | |
30 | #include <linux/rwsem.h> | |
1da177e4 LT |
31 | #include <linux/mempool.h> |
32 | ||
33 | /* | |
34 | * Enable debugging support for nfs client. | |
35 | * Requires RPC_DEBUG. | |
36 | */ | |
37 | #ifdef RPC_DEBUG | |
38 | # define NFS_DEBUG | |
39 | #endif | |
40 | ||
03bf4b70 CL |
41 | /* Default timeout values */ |
42 | #define NFS_MAX_UDP_TIMEOUT (60*HZ) | |
43 | #define NFS_MAX_TCP_TIMEOUT (600*HZ) | |
44 | ||
1da177e4 LT |
45 | /* |
46 | * superblock magic number for NFS | |
47 | */ | |
48 | #define NFS_SUPER_MAGIC 0x6969 | |
49 | ||
50 | /* | |
51 | * These are the default flags for swap requests | |
52 | */ | |
53 | #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) | |
54 | ||
1da177e4 LT |
55 | /* |
56 | * When flushing a cluster of dirty pages, there can be different | |
57 | * strategies: | |
58 | */ | |
1da177e4 | 59 | #define FLUSH_SYNC 1 /* file being synced, or contention */ |
1da177e4 LT |
60 | #define FLUSH_STABLE 4 /* commit to stable storage */ |
61 | #define FLUSH_LOWPRI 8 /* low priority background flush */ | |
62 | #define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */ | |
70b9ecbd | 63 | #define FLUSH_NOCOMMIT 32 /* Don't send the NFSv3/v4 COMMIT */ |
1da177e4 LT |
64 | |
65 | #ifdef __KERNEL__ | |
66 | ||
67 | /* | |
68 | * NFSv3/v4 Access mode cache entry | |
69 | */ | |
70 | struct nfs_access_entry { | |
71 | unsigned long jiffies; | |
72 | struct rpc_cred * cred; | |
73 | int mask; | |
74 | }; | |
75 | ||
76 | struct nfs4_state; | |
77 | struct nfs_open_context { | |
78 | atomic_t count; | |
b92dccf6 | 79 | struct vfsmount *vfsmnt; |
1da177e4 LT |
80 | struct dentry *dentry; |
81 | struct rpc_cred *cred; | |
82 | struct nfs4_state *state; | |
83 | fl_owner_t lockowner; | |
84 | int mode; | |
85 | int error; | |
86 | ||
87 | struct list_head list; | |
00a92642 | 88 | |
00a92642 | 89 | __u64 dir_cookie; |
1da177e4 LT |
90 | }; |
91 | ||
92 | /* | |
93 | * NFSv4 delegation | |
94 | */ | |
95 | struct nfs_delegation; | |
96 | ||
5c6a9f7d AG |
97 | struct posix_acl; |
98 | ||
1da177e4 LT |
99 | /* |
100 | * nfs fs inode data in memory | |
101 | */ | |
102 | struct nfs_inode { | |
103 | /* | |
104 | * The 64bit 'inode number' | |
105 | */ | |
106 | __u64 fileid; | |
107 | ||
108 | /* | |
109 | * NFS file handle | |
110 | */ | |
111 | struct nfs_fh fh; | |
112 | ||
113 | /* | |
114 | * Various flags | |
115 | */ | |
412d582e CL |
116 | unsigned long flags; /* atomic bit ops */ |
117 | unsigned long cache_validity; /* bit mask */ | |
1da177e4 LT |
118 | |
119 | /* | |
24bd68f4 | 120 | * read_cache_jiffies is when we started read-caching this inode. |
1da177e4 LT |
121 | * attrtimeo is for how long the cached information is assumed |
122 | * to be valid. A successful attribute revalidation doubles | |
123 | * attrtimeo (up to acregmax/acdirmax), a failure resets it to | |
124 | * acregmin/acdirmin. | |
125 | * | |
126 | * We need to revalidate the cached attrs for this inode if | |
127 | * | |
128 | * jiffies - read_cache_jiffies > attrtimeo | |
1da177e4 | 129 | */ |
1da177e4 LT |
130 | unsigned long read_cache_jiffies; |
131 | unsigned long attrtimeo; | |
132 | unsigned long attrtimeo_timestamp; | |
133 | __u64 change_attr; /* v4 only */ | |
134 | ||
33801147 | 135 | unsigned long last_updated; |
1da177e4 LT |
136 | /* "Generation counter" for the attribute cache. This is |
137 | * bumped whenever we update the metadata on the | |
138 | * server. | |
139 | */ | |
140 | unsigned long cache_change_attribute; | |
141 | /* | |
142 | * Counter indicating the number of outstanding requests that | |
143 | * will cause a file data update. | |
144 | */ | |
145 | atomic_t data_updates; | |
146 | ||
147 | struct nfs_access_entry cache_access; | |
5c6a9f7d AG |
148 | #ifdef CONFIG_NFS_V3_ACL |
149 | struct posix_acl *acl_access; | |
150 | struct posix_acl *acl_default; | |
151 | #endif | |
1da177e4 LT |
152 | |
153 | /* | |
154 | * This is the cookie verifier used for NFSv3 readdir | |
155 | * operations | |
156 | */ | |
157 | __u32 cookieverf[2]; | |
158 | ||
159 | /* | |
160 | * This is the list of dirty unwritten pages. | |
161 | */ | |
162 | spinlock_t req_lock; | |
163 | struct list_head dirty; | |
164 | struct list_head commit; | |
165 | struct radix_tree_root nfs_page_tree; | |
166 | ||
167 | unsigned int ndirty, | |
168 | ncommit, | |
169 | npages; | |
170 | ||
171 | /* Open contexts for shared mmap writes */ | |
172 | struct list_head open_files; | |
173 | ||
1da177e4 | 174 | #ifdef CONFIG_NFS_V4 |
e50a1c2e | 175 | struct nfs4_cached_acl *nfs4_acl; |
1da177e4 LT |
176 | /* NFSv4 state */ |
177 | struct list_head open_states; | |
178 | struct nfs_delegation *delegation; | |
179 | int delegation_state; | |
180 | struct rw_semaphore rwsem; | |
181 | #endif /* CONFIG_NFS_V4*/ | |
1da177e4 LT |
182 | struct inode vfs_inode; |
183 | }; | |
184 | ||
185 | /* | |
55296809 | 186 | * Cache validity bit flags |
1da177e4 | 187 | */ |
55296809 CL |
188 | #define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */ |
189 | #define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */ | |
190 | #define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */ | |
191 | #define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ | |
192 | #define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ | |
193 | #define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ | |
194 | ||
195 | /* | |
412d582e | 196 | * Bit offsets in flags field |
55296809 | 197 | */ |
412d582e CL |
198 | #define NFS_INO_REVALIDATING (0) /* revalidating attrs */ |
199 | #define NFS_INO_ADVISE_RDPLUS (1) /* advise readdirplus */ | |
200 | #define NFS_INO_STALE (2) /* possible stale inode */ | |
1da177e4 LT |
201 | |
202 | static inline struct nfs_inode *NFS_I(struct inode *inode) | |
203 | { | |
204 | return container_of(inode, struct nfs_inode, vfs_inode); | |
205 | } | |
206 | #define NFS_SB(s) ((struct nfs_server *)(s->s_fs_info)) | |
207 | ||
208 | #define NFS_FH(inode) (&NFS_I(inode)->fh) | |
209 | #define NFS_SERVER(inode) (NFS_SB(inode->i_sb)) | |
210 | #define NFS_CLIENT(inode) (NFS_SERVER(inode)->client) | |
211 | #define NFS_PROTO(inode) (NFS_SERVER(inode)->rpc_ops) | |
212 | #define NFS_ADDR(inode) (RPC_PEERADDR(NFS_CLIENT(inode))) | |
213 | #define NFS_COOKIEVERF(inode) (NFS_I(inode)->cookieverf) | |
214 | #define NFS_READTIME(inode) (NFS_I(inode)->read_cache_jiffies) | |
215 | #define NFS_CHANGE_ATTR(inode) (NFS_I(inode)->change_attr) | |
216 | #define NFS_ATTRTIMEO(inode) (NFS_I(inode)->attrtimeo) | |
217 | #define NFS_MINATTRTIMEO(inode) \ | |
218 | (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmin \ | |
219 | : NFS_SERVER(inode)->acregmin) | |
220 | #define NFS_MAXATTRTIMEO(inode) \ | |
221 | (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmax \ | |
222 | : NFS_SERVER(inode)->acregmax) | |
223 | #define NFS_ATTRTIMEO_UPDATE(inode) (NFS_I(inode)->attrtimeo_timestamp) | |
224 | ||
225 | #define NFS_FLAGS(inode) (NFS_I(inode)->flags) | |
412d582e | 226 | #define NFS_STALE(inode) (test_bit(NFS_INO_STALE, &NFS_FLAGS(inode))) |
1da177e4 LT |
227 | |
228 | #define NFS_FILEID(inode) (NFS_I(inode)->fileid) | |
229 | ||
230 | static inline int nfs_caches_unstable(struct inode *inode) | |
231 | { | |
232 | return atomic_read(&NFS_I(inode)->data_updates) != 0; | |
233 | } | |
234 | ||
decf491f TM |
235 | static inline void nfs_mark_for_revalidate(struct inode *inode) |
236 | { | |
237 | spin_lock(&inode->i_lock); | |
238 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS; | |
239 | spin_unlock(&inode->i_lock); | |
240 | } | |
241 | ||
1da177e4 LT |
242 | static inline void NFS_CACHEINV(struct inode *inode) |
243 | { | |
decf491f TM |
244 | if (!nfs_caches_unstable(inode)) |
245 | nfs_mark_for_revalidate(inode); | |
1da177e4 LT |
246 | } |
247 | ||
248 | static inline int nfs_server_capable(struct inode *inode, int cap) | |
249 | { | |
250 | return NFS_SERVER(inode)->caps & cap; | |
251 | } | |
252 | ||
253 | static inline int NFS_USE_READDIRPLUS(struct inode *inode) | |
254 | { | |
412d582e | 255 | return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode)); |
1da177e4 LT |
256 | } |
257 | ||
258 | /** | |
259 | * nfs_save_change_attribute - Returns the inode attribute change cookie | |
260 | * @inode - pointer to inode | |
261 | * The "change attribute" is updated every time we finish an operation | |
262 | * that will result in a metadata change on the server. | |
263 | */ | |
264 | static inline long nfs_save_change_attribute(struct inode *inode) | |
265 | { | |
266 | return NFS_I(inode)->cache_change_attribute; | |
267 | } | |
268 | ||
269 | /** | |
270 | * nfs_verify_change_attribute - Detects NFS inode cache updates | |
271 | * @inode - pointer to inode | |
272 | * @chattr - previously saved change attribute | |
273 | * Return "false" if metadata has been updated (or is in the process of | |
274 | * being updated) since the change attribute was saved. | |
275 | */ | |
276 | static inline int nfs_verify_change_attribute(struct inode *inode, unsigned long chattr) | |
277 | { | |
278 | return !nfs_caches_unstable(inode) | |
913a70fc | 279 | && time_after_eq(chattr, NFS_I(inode)->cache_change_attribute); |
1da177e4 LT |
280 | } |
281 | ||
282 | /* | |
283 | * linux/fs/nfs/inode.c | |
284 | */ | |
29884df0 | 285 | extern int nfs_sync_mapping(struct address_space *mapping); |
1da177e4 LT |
286 | extern void nfs_zap_caches(struct inode *); |
287 | extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, | |
288 | struct nfs_fattr *); | |
289 | extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); | |
decf491f | 290 | extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); |
1da177e4 LT |
291 | extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
292 | extern int nfs_permission(struct inode *, int, struct nameidata *); | |
293 | extern int nfs_access_get_cached(struct inode *, struct rpc_cred *, struct nfs_access_entry *); | |
294 | extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *); | |
295 | extern int nfs_open(struct inode *, struct file *); | |
296 | extern int nfs_release(struct inode *, struct file *); | |
297 | extern int nfs_attribute_timeout(struct inode *inode); | |
298 | extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); | |
299 | extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); | |
7d52e862 | 300 | extern void nfs_revalidate_mapping(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. */ | |
312 | extern u32 root_nfs_parse_addr(char *name); /*__init*/ | |
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 | */ | |
323 | extern struct inode_operations nfs_file_inode_operations; | |
b7fa0554 AG |
324 | #ifdef CONFIG_NFS_V3 |
325 | extern struct inode_operations nfs3_file_inode_operations; | |
326 | #endif /* CONFIG_NFS_V3 */ | |
1da177e4 LT |
327 | extern struct file_operations nfs_file_operations; |
328 | extern struct address_space_operations nfs_file_aops; | |
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); | |
362 | extern ssize_t nfs_file_direct_read(struct kiocb *iocb, char __user *buf, | |
363 | size_t count, loff_t pos); | |
364 | extern ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, | |
365 | size_t count, loff_t pos); | |
366 | ||
367 | /* | |
368 | * linux/fs/nfs/dir.c | |
369 | */ | |
370 | extern struct inode_operations nfs_dir_inode_operations; | |
b7fa0554 AG |
371 | #ifdef CONFIG_NFS_V3 |
372 | extern struct inode_operations nfs3_dir_inode_operations; | |
373 | #endif /* CONFIG_NFS_V3 */ | |
1da177e4 LT |
374 | extern struct file_operations nfs_dir_operations; |
375 | extern struct dentry_operations nfs_dentry_operations; | |
376 | ||
377 | extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); | |
378 | ||
379 | /* | |
380 | * linux/fs/nfs/symlink.c | |
381 | */ | |
382 | extern struct inode_operations nfs_symlink_inode_operations; | |
383 | ||
a72b4422 TM |
384 | /* |
385 | * linux/fs/nfs/sysctl.c | |
386 | */ | |
387 | #ifdef CONFIG_SYSCTL | |
388 | extern int nfs_register_sysctl(void); | |
389 | extern void nfs_unregister_sysctl(void); | |
390 | #else | |
7fd105e7 | 391 | #define nfs_register_sysctl() 0 |
a72b4422 TM |
392 | #define nfs_unregister_sysctl() do { } while(0) |
393 | #endif | |
394 | ||
1da177e4 LT |
395 | /* |
396 | * linux/fs/nfs/unlink.c | |
397 | */ | |
398 | extern int nfs_async_unlink(struct dentry *); | |
399 | extern void nfs_complete_unlink(struct dentry *); | |
400 | ||
401 | /* | |
402 | * linux/fs/nfs/write.c | |
403 | */ | |
404 | extern int nfs_writepage(struct page *page, struct writeback_control *wbc); | |
405 | extern int nfs_writepages(struct address_space *, struct writeback_control *); | |
406 | extern int nfs_flush_incompatible(struct file *file, struct page *page); | |
407 | extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); | |
462d5b32 CL |
408 | extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); |
409 | extern void nfs_writedata_release(void *); | |
1da177e4 | 410 | |
e17b1fc4 TM |
411 | #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) |
412 | struct nfs_write_data *nfs_commit_alloc(unsigned int pagecount); | |
413 | void nfs_commit_free(struct nfs_write_data *p); | |
414 | #endif | |
415 | ||
1da177e4 LT |
416 | /* |
417 | * Try to write back everything synchronously (but check the | |
418 | * return value!) | |
419 | */ | |
c42de9dd | 420 | extern int nfs_sync_inode_wait(struct inode *, unsigned long, unsigned int, int); |
1da177e4 | 421 | #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) |
3da28eb1 | 422 | extern int nfs_commit_inode(struct inode *, int); |
fad61490 | 423 | extern void nfs_commit_release(void *wdata); |
1da177e4 LT |
424 | #else |
425 | static inline int | |
3da28eb1 | 426 | nfs_commit_inode(struct inode *inode, int how) |
1da177e4 LT |
427 | { |
428 | return 0; | |
429 | } | |
430 | #endif | |
431 | ||
432 | static inline int | |
433 | nfs_have_writebacks(struct inode *inode) | |
434 | { | |
435 | return NFS_I(inode)->npages != 0; | |
436 | } | |
437 | ||
438 | static inline int | |
439 | nfs_wb_all(struct inode *inode) | |
440 | { | |
c42de9dd | 441 | int error = nfs_sync_inode_wait(inode, 0, 0, 0); |
1da177e4 LT |
442 | return (error < 0) ? error : 0; |
443 | } | |
444 | ||
445 | /* | |
446 | * Write back all requests on one page - we do this before reading it. | |
447 | */ | |
448 | static inline int nfs_wb_page_priority(struct inode *inode, struct page* page, int how) | |
449 | { | |
c42de9dd TM |
450 | int error = nfs_sync_inode_wait(inode, page->index, 1, |
451 | how | FLUSH_STABLE); | |
1da177e4 LT |
452 | return (error < 0) ? error : 0; |
453 | } | |
454 | ||
455 | static inline int nfs_wb_page(struct inode *inode, struct page* page) | |
456 | { | |
457 | return nfs_wb_page_priority(inode, page, 0); | |
458 | } | |
459 | ||
460 | /* | |
461 | * Allocate and free nfs_write_data structures | |
462 | */ | |
3feb2d49 TM |
463 | extern struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount); |
464 | extern void nfs_writedata_free(struct nfs_write_data *p); | |
1da177e4 | 465 | |
1da177e4 LT |
466 | /* |
467 | * linux/fs/nfs/read.c | |
468 | */ | |
469 | extern int nfs_readpage(struct file *, struct page *); | |
470 | extern int nfs_readpages(struct file *, struct address_space *, | |
471 | struct list_head *, unsigned); | |
ec06c096 TM |
472 | extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); |
473 | extern void nfs_readdata_release(void *data); | |
963d8fe5 | 474 | |
1da177e4 LT |
475 | /* |
476 | * Allocate and free nfs_read_data structures | |
477 | */ | |
3feb2d49 TM |
478 | extern struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount); |
479 | extern void nfs_readdata_free(struct nfs_read_data *p); | |
1da177e4 | 480 | |
b7fa0554 AG |
481 | /* |
482 | * linux/fs/nfs3proc.c | |
483 | */ | |
484 | #ifdef CONFIG_NFS_V3_ACL | |
485 | extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); | |
486 | extern int nfs3_proc_setacl(struct inode *inode, int type, | |
487 | struct posix_acl *acl); | |
055ffbea AG |
488 | extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, |
489 | mode_t mode); | |
5c6a9f7d | 490 | extern void nfs3_forget_cached_acls(struct inode *inode); |
055ffbea AG |
491 | #else |
492 | static inline int nfs3_proc_set_default_acl(struct inode *dir, | |
493 | struct inode *inode, | |
494 | mode_t mode) | |
495 | { | |
496 | return 0; | |
497 | } | |
5c6a9f7d AG |
498 | |
499 | static inline void nfs3_forget_cached_acls(struct inode *inode) | |
500 | { | |
501 | } | |
b7fa0554 AG |
502 | #endif /* CONFIG_NFS_V3_ACL */ |
503 | ||
1da177e4 LT |
504 | /* |
505 | * linux/fs/mount_clnt.c | |
506 | * (Used only by nfsroot module) | |
507 | */ | |
508 | extern int nfsroot_mount(struct sockaddr_in *, char *, struct nfs_fh *, | |
509 | int, int); | |
510 | ||
511 | /* | |
512 | * inline functions | |
513 | */ | |
514 | ||
515 | static inline loff_t | |
516 | nfs_size_to_loff_t(__u64 size) | |
517 | { | |
518 | loff_t maxsz = (((loff_t) ULONG_MAX) << PAGE_CACHE_SHIFT) + PAGE_CACHE_SIZE - 1; | |
519 | if (size > maxsz) | |
520 | return maxsz; | |
521 | return (loff_t) size; | |
522 | } | |
523 | ||
524 | static inline ino_t | |
525 | nfs_fileid_to_ino_t(u64 fileid) | |
526 | { | |
527 | ino_t ino = (ino_t) fileid; | |
528 | if (sizeof(ino_t) < sizeof(u64)) | |
529 | ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; | |
530 | return ino; | |
531 | } | |
532 | ||
533 | /* NFS root */ | |
534 | ||
535 | extern void * nfs_root_data(void); | |
536 | ||
537 | #define nfs_wait_event(clnt, wq, condition) \ | |
538 | ({ \ | |
539 | int __retval = 0; \ | |
540 | if (clnt->cl_intr) { \ | |
541 | sigset_t oldmask; \ | |
542 | rpc_clnt_sigmask(clnt, &oldmask); \ | |
543 | __retval = wait_event_interruptible(wq, condition); \ | |
544 | rpc_clnt_sigunmask(clnt, &oldmask); \ | |
545 | } else \ | |
546 | wait_event(wq, condition); \ | |
547 | __retval; \ | |
548 | }) | |
549 | ||
550 | #define NFS_JUKEBOX_RETRY_TIME (5 * HZ) | |
551 | ||
1da177e4 LT |
552 | #endif /* __KERNEL__ */ |
553 | ||
554 | /* | |
555 | * NFS debug flags | |
556 | */ | |
557 | #define NFSDBG_VFS 0x0001 | |
558 | #define NFSDBG_DIRCACHE 0x0002 | |
559 | #define NFSDBG_LOOKUPCACHE 0x0004 | |
560 | #define NFSDBG_PAGECACHE 0x0008 | |
561 | #define NFSDBG_PROC 0x0010 | |
562 | #define NFSDBG_XDR 0x0020 | |
563 | #define NFSDBG_FILE 0x0040 | |
564 | #define NFSDBG_ROOT 0x0080 | |
565 | #define NFSDBG_CALLBACK 0x0100 | |
566 | #define NFSDBG_ALL 0xFFFF | |
567 | ||
568 | #ifdef __KERNEL__ | |
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 |