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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 | 32 | #include <linux/in.h> |
3bec63db | 33 | #include <linux/kref.h> |
7f1cbe51 | 34 | #include <linux/mm.h> |
88be9f99 | 35 | #include <linux/namei.h> |
7f1cbe51 | 36 | #include <linux/pagemap.h> |
1c3c07e9 | 37 | #include <linux/rbtree.h> |
7f1cbe51 DW |
38 | #include <linux/rwsem.h> |
39 | #include <linux/wait.h> | |
40 | ||
41 | #include <linux/sunrpc/debug.h> | |
42 | #include <linux/sunrpc/auth.h> | |
43 | #include <linux/sunrpc/clnt.h> | |
44 | ||
45 | #include <linux/nfs.h> | |
46 | #include <linux/nfs2.h> | |
47 | #include <linux/nfs3.h> | |
48 | #include <linux/nfs4.h> | |
49 | #include <linux/nfs_xdr.h> | |
7f1cbe51 DW |
50 | #include <linux/nfs_fs_sb.h> |
51 | ||
7f1cbe51 DW |
52 | #include <linux/mempool.h> |
53 | ||
54 | /* | |
55 | * These are the default flags for swap requests | |
56 | */ | |
57 | #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) | |
58 | ||
1da177e4 LT |
59 | /* |
60 | * NFSv3/v4 Access mode cache entry | |
61 | */ | |
62 | struct nfs_access_entry { | |
1c3c07e9 | 63 | struct rb_node rb_node; |
cfcea3e8 | 64 | struct list_head lru; |
1da177e4 LT |
65 | unsigned long jiffies; |
66 | struct rpc_cred * cred; | |
67 | int mask; | |
68 | }; | |
69 | ||
70 | struct nfs4_state; | |
71 | struct nfs_open_context { | |
5e11934d | 72 | atomic_t count; |
88be9f99 | 73 | struct path path; |
1da177e4 LT |
74 | struct rpc_cred *cred; |
75 | struct nfs4_state *state; | |
76 | fl_owner_t lockowner; | |
77 | int mode; | |
7b159fc1 TM |
78 | |
79 | unsigned long flags; | |
80 | #define NFS_CONTEXT_ERROR_WRITE (0) | |
1da177e4 LT |
81 | int error; |
82 | ||
83 | struct list_head list; | |
00a92642 | 84 | |
00a92642 | 85 | __u64 dir_cookie; |
1da177e4 LT |
86 | }; |
87 | ||
88 | /* | |
89 | * NFSv4 delegation | |
90 | */ | |
91 | struct nfs_delegation; | |
92 | ||
5c6a9f7d AG |
93 | struct posix_acl; |
94 | ||
1da177e4 LT |
95 | /* |
96 | * nfs fs inode data in memory | |
97 | */ | |
98 | struct nfs_inode { | |
99 | /* | |
100 | * The 64bit 'inode number' | |
101 | */ | |
102 | __u64 fileid; | |
103 | ||
104 | /* | |
105 | * NFS file handle | |
106 | */ | |
107 | struct nfs_fh fh; | |
108 | ||
109 | /* | |
110 | * Various flags | |
111 | */ | |
412d582e CL |
112 | unsigned long flags; /* atomic bit ops */ |
113 | unsigned long cache_validity; /* bit mask */ | |
1da177e4 LT |
114 | |
115 | /* | |
24bd68f4 | 116 | * read_cache_jiffies is when we started read-caching this inode. |
1da177e4 LT |
117 | * attrtimeo is for how long the cached information is assumed |
118 | * to be valid. A successful attribute revalidation doubles | |
119 | * attrtimeo (up to acregmax/acdirmax), a failure resets it to | |
120 | * acregmin/acdirmin. | |
121 | * | |
122 | * We need to revalidate the cached attrs for this inode if | |
123 | * | |
124 | * jiffies - read_cache_jiffies > attrtimeo | |
1da177e4 | 125 | */ |
1da177e4 LT |
126 | unsigned long read_cache_jiffies; |
127 | unsigned long attrtimeo; | |
128 | unsigned long attrtimeo_timestamp; | |
129 | __u64 change_attr; /* v4 only */ | |
130 | ||
33801147 | 131 | unsigned long last_updated; |
1da177e4 LT |
132 | /* "Generation counter" for the attribute cache. This is |
133 | * bumped whenever we update the metadata on the | |
134 | * server. | |
135 | */ | |
136 | unsigned long cache_change_attribute; | |
1da177e4 | 137 | |
1c3c07e9 | 138 | struct rb_root access_cache; |
cfcea3e8 TM |
139 | struct list_head access_cache_entry_lru; |
140 | struct list_head access_cache_inode_lru; | |
5c6a9f7d AG |
141 | #ifdef CONFIG_NFS_V3_ACL |
142 | struct posix_acl *acl_access; | |
143 | struct posix_acl *acl_default; | |
144 | #endif | |
1da177e4 LT |
145 | |
146 | /* | |
147 | * This is the cookie verifier used for NFSv3 readdir | |
148 | * operations | |
149 | */ | |
bc4785cd | 150 | __be32 cookieverf[2]; |
1da177e4 LT |
151 | |
152 | /* | |
153 | * This is the list of dirty unwritten pages. | |
154 | */ | |
1da177e4 LT |
155 | struct radix_tree_root nfs_page_tree; |
156 | ||
dce34ce2 | 157 | unsigned long ncommit, |
1da177e4 LT |
158 | npages; |
159 | ||
160 | /* Open contexts for shared mmap writes */ | |
161 | struct list_head open_files; | |
162 | ||
1da177e4 | 163 | #ifdef CONFIG_NFS_V4 |
e50a1c2e | 164 | struct nfs4_cached_acl *nfs4_acl; |
1da177e4 LT |
165 | /* NFSv4 state */ |
166 | struct list_head open_states; | |
167 | struct nfs_delegation *delegation; | |
168 | int delegation_state; | |
169 | struct rw_semaphore rwsem; | |
170 | #endif /* CONFIG_NFS_V4*/ | |
1da177e4 LT |
171 | struct inode vfs_inode; |
172 | }; | |
173 | ||
174 | /* | |
55296809 | 175 | * Cache validity bit flags |
1da177e4 | 176 | */ |
55296809 CL |
177 | #define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */ |
178 | #define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */ | |
179 | #define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */ | |
180 | #define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ | |
181 | #define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ | |
182 | #define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ | |
412c77ce | 183 | #define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */ |
55296809 CL |
184 | |
185 | /* | |
412d582e | 186 | * Bit offsets in flags field |
55296809 | 187 | */ |
412d582e CL |
188 | #define NFS_INO_REVALIDATING (0) /* revalidating attrs */ |
189 | #define NFS_INO_ADVISE_RDPLUS (1) /* advise readdirplus */ | |
190 | #define NFS_INO_STALE (2) /* possible stale inode */ | |
cfcea3e8 | 191 | #define NFS_INO_ACL_LRU_SET (3) /* Inode is on the LRU list */ |
1da177e4 LT |
192 | |
193 | static inline struct nfs_inode *NFS_I(struct inode *inode) | |
194 | { | |
195 | return container_of(inode, struct nfs_inode, vfs_inode); | |
196 | } | |
197 | #define NFS_SB(s) ((struct nfs_server *)(s->s_fs_info)) | |
198 | ||
199 | #define NFS_FH(inode) (&NFS_I(inode)->fh) | |
200 | #define NFS_SERVER(inode) (NFS_SB(inode->i_sb)) | |
201 | #define NFS_CLIENT(inode) (NFS_SERVER(inode)->client) | |
8fa5c000 | 202 | #define NFS_PROTO(inode) (NFS_SERVER(inode)->nfs_client->rpc_ops) |
1da177e4 | 203 | #define NFS_COOKIEVERF(inode) (NFS_I(inode)->cookieverf) |
1da177e4 LT |
204 | #define NFS_MINATTRTIMEO(inode) \ |
205 | (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmin \ | |
206 | : NFS_SERVER(inode)->acregmin) | |
207 | #define NFS_MAXATTRTIMEO(inode) \ | |
208 | (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmax \ | |
209 | : NFS_SERVER(inode)->acregmax) | |
1da177e4 LT |
210 | |
211 | #define NFS_FLAGS(inode) (NFS_I(inode)->flags) | |
412d582e | 212 | #define NFS_STALE(inode) (test_bit(NFS_INO_STALE, &NFS_FLAGS(inode))) |
1da177e4 LT |
213 | |
214 | #define NFS_FILEID(inode) (NFS_I(inode)->fileid) | |
215 | ||
decf491f TM |
216 | static inline void nfs_mark_for_revalidate(struct inode *inode) |
217 | { | |
38478b24 TM |
218 | struct nfs_inode *nfsi = NFS_I(inode); |
219 | ||
decf491f | 220 | spin_lock(&inode->i_lock); |
38478b24 | 221 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS; |
f3821110 | 222 | if (S_ISDIR(inode->i_mode)) |
38478b24 | 223 | nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
decf491f TM |
224 | spin_unlock(&inode->i_lock); |
225 | } | |
226 | ||
1da177e4 LT |
227 | static inline int nfs_server_capable(struct inode *inode, int cap) |
228 | { | |
229 | return NFS_SERVER(inode)->caps & cap; | |
230 | } | |
231 | ||
232 | static inline int NFS_USE_READDIRPLUS(struct inode *inode) | |
233 | { | |
412d582e | 234 | return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode)); |
1da177e4 LT |
235 | } |
236 | ||
d75340cc TM |
237 | static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf) |
238 | { | |
239 | dentry->d_time = verf; | |
240 | } | |
241 | ||
1da177e4 LT |
242 | /** |
243 | * nfs_save_change_attribute - Returns the inode attribute change cookie | |
8edb0182 | 244 | * @dir - pointer to parent directory inode |
1da177e4 LT |
245 | * The "change attribute" is updated every time we finish an operation |
246 | * that will result in a metadata change on the server. | |
247 | */ | |
8edb0182 | 248 | static inline unsigned long nfs_save_change_attribute(struct inode *dir) |
1da177e4 | 249 | { |
8edb0182 | 250 | return NFS_I(dir)->cache_change_attribute; |
1da177e4 LT |
251 | } |
252 | ||
253 | /** | |
4b841736 TM |
254 | * nfs_verify_change_attribute - Detects NFS remote directory changes |
255 | * @dir - pointer to parent directory inode | |
1da177e4 | 256 | * @chattr - previously saved change attribute |
4b841736 TM |
257 | * Return "false" if the verifiers doesn't match the change attribute. |
258 | * This would usually indicate that the directory contents have changed on | |
259 | * the server, and that any dentries need revalidating. | |
1da177e4 | 260 | */ |
4b841736 | 261 | static inline int nfs_verify_change_attribute(struct inode *dir, unsigned long chattr) |
1da177e4 | 262 | { |
4b841736 | 263 | return chattr == NFS_I(dir)->cache_change_attribute; |
1da177e4 LT |
264 | } |
265 | ||
266 | /* | |
267 | * linux/fs/nfs/inode.c | |
268 | */ | |
29884df0 | 269 | extern int nfs_sync_mapping(struct address_space *mapping); |
cd9ae2b6 | 270 | extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping); |
1da177e4 | 271 | extern void nfs_zap_caches(struct inode *); |
c4812998 | 272 | extern void nfs_invalidate_atime(struct inode *); |
1da177e4 LT |
273 | extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, |
274 | struct nfs_fattr *); | |
275 | extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); | |
decf491f | 276 | extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); |
70ca8852 | 277 | extern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr); |
1da177e4 LT |
278 | extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
279 | extern int nfs_permission(struct inode *, int, struct nameidata *); | |
1da177e4 LT |
280 | extern int nfs_open(struct inode *, struct file *); |
281 | extern int nfs_release(struct inode *, struct file *); | |
282 | extern int nfs_attribute_timeout(struct inode *inode); | |
283 | extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); | |
284 | extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); | |
44b11874 | 285 | extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); |
717d44e8 | 286 | extern int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping); |
1da177e4 | 287 | extern int nfs_setattr(struct dentry *, struct iattr *); |
65e4308d | 288 | extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr); |
1da177e4 LT |
289 | extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); |
290 | extern void put_nfs_open_context(struct nfs_open_context *ctx); | |
d530838b | 291 | extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode); |
1da177e4 LT |
292 | |
293 | /* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ | |
5a874db4 | 294 | extern __be32 root_nfs_parse_addr(char *name); /*__init*/ |
1da177e4 | 295 | |
0e574af1 TM |
296 | static inline void nfs_fattr_init(struct nfs_fattr *fattr) |
297 | { | |
298 | fattr->valid = 0; | |
33801147 | 299 | fattr->time_start = jiffies; |
0e574af1 TM |
300 | } |
301 | ||
1da177e4 LT |
302 | /* |
303 | * linux/fs/nfs/file.c | |
304 | */ | |
c5ef1c42 | 305 | extern const struct inode_operations nfs_file_inode_operations; |
b7fa0554 | 306 | #ifdef CONFIG_NFS_V3 |
c5ef1c42 | 307 | extern const struct inode_operations nfs3_file_inode_operations; |
b7fa0554 | 308 | #endif /* CONFIG_NFS_V3 */ |
4b6f5d20 | 309 | extern const struct file_operations nfs_file_operations; |
f5e54d6e | 310 | extern const struct address_space_operations nfs_file_aops; |
1da177e4 | 311 | |
c03025d5 TM |
312 | static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) |
313 | { | |
314 | return filp->private_data; | |
315 | } | |
316 | ||
1da177e4 LT |
317 | static inline struct rpc_cred *nfs_file_cred(struct file *file) |
318 | { | |
cd3758e3 TM |
319 | if (file != NULL) |
320 | return nfs_file_open_context(file)->cred; | |
1da177e4 LT |
321 | return NULL; |
322 | } | |
323 | ||
b7fa0554 AG |
324 | /* |
325 | * linux/fs/nfs/xattr.c | |
326 | */ | |
327 | #ifdef CONFIG_NFS_V3_ACL | |
328 | extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); | |
329 | extern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t); | |
330 | extern int nfs3_setxattr(struct dentry *, const char *, | |
331 | const void *, size_t, int); | |
332 | extern int nfs3_removexattr (struct dentry *, const char *name); | |
333 | #else | |
334 | # define nfs3_listxattr NULL | |
335 | # define nfs3_getxattr NULL | |
336 | # define nfs3_setxattr NULL | |
337 | # define nfs3_removexattr NULL | |
338 | #endif | |
339 | ||
1da177e4 LT |
340 | /* |
341 | * linux/fs/nfs/direct.c | |
342 | */ | |
343 | extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, | |
344 | unsigned long); | |
027445c3 BP |
345 | extern ssize_t nfs_file_direct_read(struct kiocb *iocb, |
346 | const struct iovec *iov, unsigned long nr_segs, | |
347 | loff_t pos); | |
348 | extern ssize_t nfs_file_direct_write(struct kiocb *iocb, | |
349 | const struct iovec *iov, unsigned long nr_segs, | |
350 | loff_t pos); | |
1da177e4 LT |
351 | |
352 | /* | |
353 | * linux/fs/nfs/dir.c | |
354 | */ | |
c5ef1c42 | 355 | extern const struct inode_operations nfs_dir_inode_operations; |
b7fa0554 | 356 | #ifdef CONFIG_NFS_V3 |
c5ef1c42 | 357 | extern const struct inode_operations nfs3_dir_inode_operations; |
b7fa0554 | 358 | #endif /* CONFIG_NFS_V3 */ |
4b6f5d20 | 359 | extern const struct file_operations nfs_dir_operations; |
1da177e4 LT |
360 | extern struct dentry_operations nfs_dentry_operations; |
361 | ||
362 | extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); | |
af22f94a TM |
363 | extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags); |
364 | extern void nfs_access_zap_cache(struct inode *inode); | |
1da177e4 LT |
365 | |
366 | /* | |
367 | * linux/fs/nfs/symlink.c | |
368 | */ | |
c5ef1c42 | 369 | extern const struct inode_operations nfs_symlink_inode_operations; |
1da177e4 | 370 | |
a72b4422 TM |
371 | /* |
372 | * linux/fs/nfs/sysctl.c | |
373 | */ | |
374 | #ifdef CONFIG_SYSCTL | |
375 | extern int nfs_register_sysctl(void); | |
376 | extern void nfs_unregister_sysctl(void); | |
377 | #else | |
7fd105e7 | 378 | #define nfs_register_sysctl() 0 |
a72b4422 TM |
379 | #define nfs_unregister_sysctl() do { } while(0) |
380 | #endif | |
381 | ||
55a97593 TM |
382 | /* |
383 | * linux/fs/nfs/namespace.c | |
384 | */ | |
51d8fa6a | 385 | extern struct list_head nfs_automount_list; |
c5ef1c42 AV |
386 | extern const struct inode_operations nfs_mountpoint_inode_operations; |
387 | extern const struct inode_operations nfs_referral_inode_operations; | |
51d8fa6a TM |
388 | extern int nfs_mountpoint_expiry_timeout; |
389 | extern void nfs_release_automount_timer(void); | |
55a97593 | 390 | |
1da177e4 LT |
391 | /* |
392 | * linux/fs/nfs/unlink.c | |
393 | */ | |
e4eff1a6 TM |
394 | extern int nfs_async_unlink(struct inode *dir, struct dentry *dentry); |
395 | extern void nfs_complete_unlink(struct dentry *dentry, struct inode *); | |
1da177e4 LT |
396 | |
397 | /* | |
398 | * linux/fs/nfs/write.c | |
399 | */ | |
89a09141 | 400 | extern int nfs_congestion_kb; |
1da177e4 LT |
401 | extern int nfs_writepage(struct page *page, struct writeback_control *wbc); |
402 | extern int nfs_writepages(struct address_space *, struct writeback_control *); | |
403 | extern int nfs_flush_incompatible(struct file *file, struct page *page); | |
404 | extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); | |
462d5b32 CL |
405 | extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); |
406 | extern void nfs_writedata_release(void *); | |
1da177e4 LT |
407 | |
408 | /* | |
409 | * Try to write back everything synchronously (but check the | |
410 | * return value!) | |
411 | */ | |
1c75950b | 412 | extern long nfs_sync_mapping_wait(struct address_space *, struct writeback_control *, int); |
1c75950b | 413 | extern int nfs_wb_all(struct inode *inode); |
ed90ef51 | 414 | extern int nfs_wb_nocommit(struct inode *inode); |
1c75950b | 415 | extern int nfs_wb_page(struct inode *inode, struct page* page); |
61822ab5 | 416 | extern int nfs_wb_page_priority(struct inode *inode, struct page* page, int how); |
1b3b4a1a | 417 | extern int nfs_wb_page_cancel(struct inode *inode, struct page* page); |
1da177e4 | 418 | #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) |
3da28eb1 | 419 | extern int nfs_commit_inode(struct inode *, int); |
8aca67f0 TM |
420 | extern struct nfs_write_data *nfs_commit_alloc(void); |
421 | extern void nfs_commit_free(struct nfs_write_data *wdata); | |
fad61490 | 422 | extern void nfs_commit_release(void *wdata); |
1da177e4 LT |
423 | #else |
424 | static inline int | |
3da28eb1 | 425 | nfs_commit_inode(struct inode *inode, int how) |
1da177e4 LT |
426 | { |
427 | return 0; | |
428 | } | |
429 | #endif | |
430 | ||
431 | static inline int | |
432 | nfs_have_writebacks(struct inode *inode) | |
433 | { | |
434 | return NFS_I(inode)->npages != 0; | |
435 | } | |
436 | ||
1da177e4 | 437 | /* |
e4e20512 | 438 | * Allocate nfs_write_data structures |
1da177e4 | 439 | */ |
8d5658c9 | 440 | extern struct nfs_write_data *nfs_writedata_alloc(unsigned int npages); |
1da177e4 | 441 | |
1da177e4 LT |
442 | /* |
443 | * linux/fs/nfs/read.c | |
444 | */ | |
445 | extern int nfs_readpage(struct file *, struct page *); | |
446 | extern int nfs_readpages(struct file *, struct address_space *, | |
447 | struct list_head *, unsigned); | |
ec06c096 TM |
448 | extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); |
449 | extern void nfs_readdata_release(void *data); | |
963d8fe5 | 450 | |
1da177e4 | 451 | /* |
e4e20512 | 452 | * Allocate nfs_read_data structures |
1da177e4 | 453 | */ |
8d5658c9 | 454 | extern struct nfs_read_data *nfs_readdata_alloc(unsigned int npages); |
1da177e4 | 455 | |
b7fa0554 AG |
456 | /* |
457 | * linux/fs/nfs3proc.c | |
458 | */ | |
459 | #ifdef CONFIG_NFS_V3_ACL | |
460 | extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); | |
461 | extern int nfs3_proc_setacl(struct inode *inode, int type, | |
462 | struct posix_acl *acl); | |
055ffbea AG |
463 | extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, |
464 | mode_t mode); | |
5c6a9f7d | 465 | extern void nfs3_forget_cached_acls(struct inode *inode); |
055ffbea AG |
466 | #else |
467 | static inline int nfs3_proc_set_default_acl(struct inode *dir, | |
468 | struct inode *inode, | |
469 | mode_t mode) | |
470 | { | |
471 | return 0; | |
472 | } | |
5c6a9f7d AG |
473 | |
474 | static inline void nfs3_forget_cached_acls(struct inode *inode) | |
475 | { | |
476 | } | |
b7fa0554 AG |
477 | #endif /* CONFIG_NFS_V3_ACL */ |
478 | ||
1da177e4 LT |
479 | /* |
480 | * linux/fs/mount_clnt.c | |
1da177e4 | 481 | */ |
3ea97309 CL |
482 | extern int nfs_mount(struct sockaddr *, size_t, char *, char *, |
483 | int, int, struct nfs_fh *); | |
1da177e4 LT |
484 | |
485 | /* | |
486 | * inline functions | |
487 | */ | |
488 | ||
433c9237 | 489 | static inline loff_t nfs_size_to_loff_t(__u64 size) |
1da177e4 | 490 | { |
433c9237 CL |
491 | if (size > (__u64) OFFSET_MAX - 1) |
492 | return OFFSET_MAX - 1; | |
1da177e4 LT |
493 | return (loff_t) size; |
494 | } | |
495 | ||
496 | static inline ino_t | |
497 | nfs_fileid_to_ino_t(u64 fileid) | |
498 | { | |
499 | ino_t ino = (ino_t) fileid; | |
500 | if (sizeof(ino_t) < sizeof(u64)) | |
501 | ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; | |
502 | return ino; | |
503 | } | |
504 | ||
505 | /* NFS root */ | |
506 | ||
507 | extern void * nfs_root_data(void); | |
508 | ||
509 | #define nfs_wait_event(clnt, wq, condition) \ | |
510 | ({ \ | |
511 | int __retval = 0; \ | |
512 | if (clnt->cl_intr) { \ | |
513 | sigset_t oldmask; \ | |
514 | rpc_clnt_sigmask(clnt, &oldmask); \ | |
515 | __retval = wait_event_interruptible(wq, condition); \ | |
516 | rpc_clnt_sigunmask(clnt, &oldmask); \ | |
517 | } else \ | |
518 | wait_event(wq, condition); \ | |
519 | __retval; \ | |
520 | }) | |
521 | ||
522 | #define NFS_JUKEBOX_RETRY_TIME (5 * HZ) | |
523 | ||
1da177e4 LT |
524 | #endif /* __KERNEL__ */ |
525 | ||
526 | /* | |
527 | * NFS debug flags | |
528 | */ | |
529 | #define NFSDBG_VFS 0x0001 | |
530 | #define NFSDBG_DIRCACHE 0x0002 | |
531 | #define NFSDBG_LOOKUPCACHE 0x0004 | |
532 | #define NFSDBG_PAGECACHE 0x0008 | |
533 | #define NFSDBG_PROC 0x0010 | |
534 | #define NFSDBG_XDR 0x0020 | |
535 | #define NFSDBG_FILE 0x0040 | |
536 | #define NFSDBG_ROOT 0x0080 | |
537 | #define NFSDBG_CALLBACK 0x0100 | |
24c8dbbb | 538 | #define NFSDBG_CLIENT 0x0200 |
f1828993 | 539 | #define NFSDBG_MOUNT 0x0400 |
1da177e4 LT |
540 | #define NFSDBG_ALL 0xFFFF |
541 | ||
542 | #ifdef __KERNEL__ | |
4dc2eaec BH |
543 | |
544 | /* | |
545 | * Enable debugging support for nfs client. | |
546 | * Requires RPC_DEBUG. | |
547 | */ | |
548 | #ifdef RPC_DEBUG | |
549 | # define NFS_DEBUG | |
550 | #endif | |
551 | ||
1da177e4 LT |
552 | # undef ifdebug |
553 | # ifdef NFS_DEBUG | |
554 | # define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) | |
555 | # else | |
556 | # define ifdebug(fac) if (0) | |
557 | # endif | |
558 | #endif /* __KERNEL */ | |
559 | ||
560 | #endif |