Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #ifndef _LINUX_NFS_FS_H |
| 9 | #define _LINUX_NFS_FS_H |
| 10 | |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 11 | #include <uapi/linux/nfs_fs.h> |
Jeff Garzik | e18fa70 | 2006-09-24 11:13:19 -0400 | [diff] [blame] | 12 | |
David Woodhouse | 7f1cbe5 | 2006-09-12 20:36:02 -0700 | [diff] [blame] | 13 | |
Trond Myklebust | e27d359 | 2012-03-18 14:07:42 -0400 | [diff] [blame] | 14 | /* |
| 15 | * Enable dprintk() debugging support for nfs client. |
| 16 | */ |
| 17 | #ifdef CONFIG_NFS_DEBUG |
| 18 | # define NFS_DEBUG |
| 19 | #endif |
| 20 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/in.h> |
| 22 | #include <linux/mm.h> |
| 23 | #include <linux/pagemap.h> |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 24 | #include <linux/rbtree.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/rwsem.h> |
| 26 | #include <linux/wait.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/sunrpc/debug.h> |
| 29 | #include <linux/sunrpc/auth.h> |
| 30 | #include <linux/sunrpc/clnt.h> |
| 31 | |
| 32 | #include <linux/nfs.h> |
| 33 | #include <linux/nfs2.h> |
| 34 | #include <linux/nfs3.h> |
| 35 | #include <linux/nfs4.h> |
| 36 | #include <linux/nfs_xdr.h> |
Trond Myklebust | 8b4bdcf | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 37 | #include <linux/nfs_fs_sb.h> |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/mempool.h> |
| 40 | |
| 41 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | * These are the default flags for swap requests |
| 43 | */ |
| 44 | #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) |
| 45 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | * NFSv3/v4 Access mode cache entry |
| 48 | */ |
| 49 | struct nfs_access_entry { |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 50 | struct rb_node rb_node; |
Trond Myklebust | cfcea3e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 51 | struct list_head lru; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | unsigned long jiffies; |
| 53 | struct rpc_cred * cred; |
| 54 | int mask; |
| 55 | }; |
| 56 | |
Trond Myklebust | 2a36915 | 2012-08-13 18:54:45 -0400 | [diff] [blame] | 57 | struct nfs_lockowner { |
| 58 | fl_owner_t l_owner; |
| 59 | pid_t l_pid; |
| 60 | }; |
| 61 | |
Trond Myklebust | 577b423 | 2013-04-08 21:38:12 -0400 | [diff] [blame] | 62 | #define NFS_IO_INPROGRESS 0 |
| 63 | struct nfs_io_counter { |
| 64 | unsigned long flags; |
| 65 | atomic_t io_count; |
| 66 | }; |
| 67 | |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 68 | struct nfs_lock_context { |
| 69 | atomic_t count; |
| 70 | struct list_head list; |
| 71 | struct nfs_open_context *open_context; |
Trond Myklebust | 2a36915 | 2012-08-13 18:54:45 -0400 | [diff] [blame] | 72 | struct nfs_lockowner lockowner; |
Trond Myklebust | 577b423 | 2013-04-08 21:38:12 -0400 | [diff] [blame] | 73 | struct nfs_io_counter io_count; |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 74 | }; |
| 75 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | struct nfs4_state; |
| 77 | struct nfs_open_context { |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 78 | struct nfs_lock_context lock_context; |
Al Viro | 3d4ff43 | 2011-06-22 18:40:12 -0400 | [diff] [blame] | 79 | struct dentry *dentry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | struct rpc_cred *cred; |
| 81 | struct nfs4_state *state; |
Trond Myklebust | dc0b027 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 82 | fmode_t mode; |
Trond Myklebust | 7b159fc | 2007-07-25 14:09:54 -0400 | [diff] [blame] | 83 | |
| 84 | unsigned long flags; |
| 85 | #define NFS_CONTEXT_ERROR_WRITE (0) |
Trond Myklebust | 05990d1 | 2012-09-11 16:01:22 -0400 | [diff] [blame] | 86 | #define NFS_CONTEXT_RESEND_WRITES (1) |
Trond Myklebust | c58c844 | 2013-03-18 19:45:14 -0400 | [diff] [blame] | 87 | #define NFS_CONTEXT_BAD (2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | int error; |
| 89 | |
| 90 | struct list_head list; |
Andy Adamson | 82be417 | 2012-05-23 05:02:35 -0400 | [diff] [blame] | 91 | struct nfs4_threshold *mdsthreshold; |
Bryan Schumaker | 480c200 | 2011-03-23 14:48:29 -0400 | [diff] [blame] | 92 | }; |
Olivier Galibert | 00a9264 | 2005-06-22 17:16:29 +0000 | [diff] [blame] | 93 | |
Bryan Schumaker | 480c200 | 2011-03-23 14:48:29 -0400 | [diff] [blame] | 94 | struct nfs_open_dir_context { |
| 95 | struct rpc_cred *cred; |
Trond Myklebust | 0c03080 | 2011-07-30 12:45:35 -0400 | [diff] [blame] | 96 | unsigned long attr_gencount; |
Olivier Galibert | 00a9264 | 2005-06-22 17:16:29 +0000 | [diff] [blame] | 97 | __u64 dir_cookie; |
Bryan Schumaker | 8ef2ce3 | 2011-03-23 15:04:31 -0400 | [diff] [blame] | 98 | __u64 dup_cookie; |
Trond Myklebust | 0c03080 | 2011-07-30 12:45:35 -0400 | [diff] [blame] | 99 | signed char duped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | }; |
| 101 | |
| 102 | /* |
| 103 | * NFSv4 delegation |
| 104 | */ |
| 105 | struct nfs_delegation; |
| 106 | |
Andreas Gruenbacher | 5c6a9f7 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 107 | struct posix_acl; |
| 108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | /* |
| 110 | * nfs fs inode data in memory |
| 111 | */ |
| 112 | struct nfs_inode { |
| 113 | /* |
| 114 | * The 64bit 'inode number' |
| 115 | */ |
| 116 | __u64 fileid; |
| 117 | |
| 118 | /* |
| 119 | * NFS file handle |
| 120 | */ |
| 121 | struct nfs_fh fh; |
| 122 | |
| 123 | /* |
| 124 | * Various flags |
| 125 | */ |
Chuck Lever | 412d582 | 2005-08-18 11:24:11 -0700 | [diff] [blame] | 126 | unsigned long flags; /* atomic bit ops */ |
| 127 | unsigned long cache_validity; /* bit mask */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | /* |
Goldwyn Rodrigues | 24bd68f | 2006-03-20 13:44:11 -0500 | [diff] [blame] | 130 | * read_cache_jiffies is when we started read-caching this inode. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | * attrtimeo is for how long the cached information is assumed |
| 132 | * to be valid. A successful attribute revalidation doubles |
| 133 | * attrtimeo (up to acregmax/acdirmax), a failure resets it to |
| 134 | * acregmin/acdirmin. |
| 135 | * |
| 136 | * We need to revalidate the cached attrs for this inode if |
| 137 | * |
Peter Staubach | 64672d5 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 138 | * jiffies - read_cache_jiffies >= attrtimeo |
| 139 | * |
| 140 | * Please note the comparison is greater than or equal |
| 141 | * so that zero timeout values can be specified. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | unsigned long read_cache_jiffies; |
| 144 | unsigned long attrtimeo; |
| 145 | unsigned long attrtimeo_timestamp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 147 | unsigned long attr_gencount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | /* "Generation counter" for the attribute cache. This is |
| 149 | * bumped whenever we update the metadata on the |
| 150 | * server. |
| 151 | */ |
| 152 | unsigned long cache_change_attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 154 | struct rb_root access_cache; |
Trond Myklebust | cfcea3e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 155 | struct list_head access_cache_entry_lru; |
| 156 | struct list_head access_cache_inode_lru; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | |
| 158 | /* |
| 159 | * This is the cookie verifier used for NFSv3 readdir |
| 160 | * operations |
| 161 | */ |
Al Viro | bc4785c | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 162 | __be32 cookieverf[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Trond Myklebust | fb8a1f1 | 2009-03-11 14:10:29 -0400 | [diff] [blame] | 164 | unsigned long npages; |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 165 | struct nfs_mds_commit_info commit_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
| 167 | /* Open contexts for shared mmap writes */ |
| 168 | struct list_head open_files; |
| 169 | |
Trond Myklebust | 565277f | 2007-10-15 18:17:53 -0400 | [diff] [blame] | 170 | /* Number of in-flight sillydelete RPC calls */ |
| 171 | atomic_t silly_count; |
| 172 | /* List of deferred sillydelete requests */ |
| 173 | struct hlist_head silly_list; |
| 174 | wait_queue_head_t waitqueue; |
| 175 | |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 176 | #if IS_ENABLED(CONFIG_NFS_V4) |
J. Bruce Fields | e50a1c2 | 2005-06-22 17:16:23 +0000 | [diff] [blame] | 177 | struct nfs4_cached_acl *nfs4_acl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | /* NFSv4 state */ |
| 179 | struct list_head open_states; |
Arnd Bergmann | 5b22216 | 2010-03-03 10:20:10 +0100 | [diff] [blame] | 180 | struct nfs_delegation __rcu *delegation; |
Trond Myklebust | bd7bf9d | 2008-12-23 15:21:53 -0500 | [diff] [blame] | 181 | fmode_t delegation_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | struct rw_semaphore rwsem; |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 183 | |
| 184 | /* pNFS layout information */ |
| 185 | struct pnfs_layout_hdr *layout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | #endif /* CONFIG_NFS_V4*/ |
Andy Adamson | 2701d08 | 2012-05-24 13:13:24 -0400 | [diff] [blame] | 187 | /* how many bytes have been written/read and how many bytes queued up */ |
| 188 | __u64 write_io; |
| 189 | __u64 read_io; |
David Howells | ef79c09 | 2009-04-03 16:42:43 +0100 | [diff] [blame] | 190 | #ifdef CONFIG_NFS_FSCACHE |
| 191 | struct fscache_cookie *fscache; |
| 192 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | struct inode vfs_inode; |
| 194 | }; |
| 195 | |
| 196 | /* |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 197 | * Cache validity bit flags |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | */ |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 199 | #define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */ |
| 200 | #define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */ |
| 201 | #define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */ |
| 202 | #define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ |
| 203 | #define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ |
| 204 | #define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ |
Trond Myklebust | 412c77c | 2007-07-03 16:10:55 -0400 | [diff] [blame] | 205 | #define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */ |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 206 | #define NFS_INO_INVALID_LABEL 0x0080 /* cached label is invalid */ |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 207 | |
| 208 | /* |
Chuck Lever | 412d582 | 2005-08-18 11:24:11 -0700 | [diff] [blame] | 209 | * Bit offsets in flags field |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 210 | */ |
Trond Myklebust | 691beb1 | 2008-10-05 14:48:22 -0400 | [diff] [blame] | 211 | #define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */ |
| 212 | #define NFS_INO_STALE (1) /* possible stale inode */ |
| 213 | #define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */ |
Trond Myklebust | 72cb77f | 2009-03-11 14:10:30 -0400 | [diff] [blame] | 214 | #define NFS_INO_FLUSHING (4) /* inode is flushing out data */ |
David Howells | ef79c09 | 2009-04-03 16:42:43 +0100 | [diff] [blame] | 215 | #define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */ |
| 216 | #define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */ |
Trond Myklebust | 71d0a61 | 2010-04-22 15:35:57 -0400 | [diff] [blame] | 217 | #define NFS_INO_COMMIT (7) /* inode is committing unstable writes */ |
Andy Adamson | 863a3c6 | 2011-03-23 13:27:54 +0000 | [diff] [blame] | 218 | #define NFS_INO_LAYOUTCOMMIT (9) /* layoutcommit required */ |
Peng Tao | 92407e7 | 2011-10-23 20:21:17 -0700 | [diff] [blame] | 219 | #define NFS_INO_LAYOUTCOMMITTING (10) /* layoutcommit inflight */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 221 | static inline struct nfs_inode *NFS_I(const struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | { |
| 223 | return container_of(inode, struct nfs_inode, vfs_inode); |
| 224 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 226 | static inline struct nfs_server *NFS_SB(const struct super_block *s) |
| 227 | { |
| 228 | return (struct nfs_server *)(s->s_fs_info); |
| 229 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 231 | static inline struct nfs_fh *NFS_FH(const struct inode *inode) |
| 232 | { |
| 233 | return &NFS_I(inode)->fh; |
| 234 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 236 | static inline struct nfs_server *NFS_SERVER(const struct inode *inode) |
| 237 | { |
| 238 | return NFS_SB(inode->i_sb); |
| 239 | } |
| 240 | |
| 241 | static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode) |
| 242 | { |
| 243 | return NFS_SERVER(inode)->client; |
| 244 | } |
| 245 | |
| 246 | static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode) |
| 247 | { |
| 248 | return NFS_SERVER(inode)->nfs_client->rpc_ops; |
| 249 | } |
| 250 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 251 | static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode) |
| 252 | { |
| 253 | struct nfs_server *nfss = NFS_SERVER(inode); |
| 254 | return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin; |
| 255 | } |
| 256 | |
| 257 | static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode) |
| 258 | { |
| 259 | struct nfs_server *nfss = NFS_SERVER(inode); |
| 260 | return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax; |
| 261 | } |
| 262 | |
| 263 | static inline int NFS_STALE(const struct inode *inode) |
| 264 | { |
| 265 | return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags); |
| 266 | } |
| 267 | |
David Howells | f1fe29b | 2013-09-27 11:20:03 +0100 | [diff] [blame] | 268 | static inline struct fscache_cookie *nfs_i_fscache(struct inode *inode) |
David Howells | ef79c09 | 2009-04-03 16:42:43 +0100 | [diff] [blame] | 269 | { |
David Howells | f1fe29b | 2013-09-27 11:20:03 +0100 | [diff] [blame] | 270 | #ifdef CONFIG_NFS_FSCACHE |
| 271 | return NFS_I(inode)->fscache; |
| 272 | #else |
| 273 | return NULL; |
| 274 | #endif |
David Howells | ef79c09 | 2009-04-03 16:42:43 +0100 | [diff] [blame] | 275 | } |
| 276 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 277 | static inline __u64 NFS_FILEID(const struct inode *inode) |
| 278 | { |
| 279 | return NFS_I(inode)->fileid; |
| 280 | } |
| 281 | |
| 282 | static inline void set_nfs_fileid(struct inode *inode, __u64 fileid) |
| 283 | { |
| 284 | NFS_I(inode)->fileid = fileid; |
| 285 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 287 | static inline void nfs_mark_for_revalidate(struct inode *inode) |
| 288 | { |
Trond Myklebust | 38478b2 | 2006-05-25 01:40:57 -0400 | [diff] [blame] | 289 | struct nfs_inode *nfsi = NFS_I(inode); |
| 290 | |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 291 | spin_lock(&inode->i_lock); |
Trond Myklebust | 38478b2 | 2006-05-25 01:40:57 -0400 | [diff] [blame] | 292 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS; |
Trond Myklebust | f382111 | 2007-10-01 10:00:23 -0400 | [diff] [blame] | 293 | if (S_ISDIR(inode->i_mode)) |
Trond Myklebust | 38478b2 | 2006-05-25 01:40:57 -0400 | [diff] [blame] | 294 | nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 295 | spin_unlock(&inode->i_lock); |
| 296 | } |
| 297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | static inline int nfs_server_capable(struct inode *inode, int cap) |
| 299 | { |
| 300 | return NFS_SERVER(inode)->caps & cap; |
| 301 | } |
| 302 | |
Trond Myklebust | d75340c | 2007-10-01 21:42:01 -0400 | [diff] [blame] | 303 | static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf) |
| 304 | { |
| 305 | dentry->d_time = verf; |
| 306 | } |
| 307 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | /** |
| 309 | * nfs_save_change_attribute - Returns the inode attribute change cookie |
Trond Myklebust | 8edb018 | 2007-09-29 17:14:03 -0400 | [diff] [blame] | 310 | * @dir - pointer to parent directory inode |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | * The "change attribute" is updated every time we finish an operation |
| 312 | * that will result in a metadata change on the server. |
| 313 | */ |
Trond Myklebust | 8edb018 | 2007-09-29 17:14:03 -0400 | [diff] [blame] | 314 | static inline unsigned long nfs_save_change_attribute(struct inode *dir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | { |
Trond Myklebust | 8edb018 | 2007-09-29 17:14:03 -0400 | [diff] [blame] | 316 | return NFS_I(dir)->cache_change_attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | } |
| 318 | |
| 319 | /** |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 320 | * nfs_verify_change_attribute - Detects NFS remote directory changes |
| 321 | * @dir - pointer to parent directory inode |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | * @chattr - previously saved change attribute |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 323 | * Return "false" if the verifiers doesn't match the change attribute. |
| 324 | * This would usually indicate that the directory contents have changed on |
| 325 | * the server, and that any dentries need revalidating. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | */ |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 327 | static inline int nfs_verify_change_attribute(struct inode *dir, unsigned long chattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | { |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 329 | return chattr == NFS_I(dir)->cache_change_attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | /* |
| 333 | * linux/fs/nfs/inode.c |
| 334 | */ |
Trond Myklebust | 29884df | 2005-12-13 16:13:54 -0500 | [diff] [blame] | 335 | extern int nfs_sync_mapping(struct address_space *mapping); |
Trond Myklebust | cd9ae2b | 2006-10-19 23:28:40 -0700 | [diff] [blame] | 336 | extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | extern void nfs_zap_caches(struct inode *); |
Trond Myklebust | c481299 | 2007-09-28 17:11:45 -0400 | [diff] [blame] | 338 | extern void nfs_invalidate_atime(struct inode *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 340 | struct nfs_fattr *, struct nfs4_label *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 342 | extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 343 | extern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
Weston Andros Adamson | 6168f62 | 2012-09-10 14:00:46 -0400 | [diff] [blame] | 345 | extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *); |
| 346 | extern void nfs_access_set_mask(struct nfs_access_entry *, u32); |
Al Viro | 10556cb | 2011-06-20 19:28:19 -0400 | [diff] [blame] | 347 | extern int nfs_permission(struct inode *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | extern int nfs_open(struct inode *, struct file *); |
| 349 | extern int nfs_release(struct inode *, struct file *); |
| 350 | extern int nfs_attribute_timeout(struct inode *inode); |
Scott Mayhew | 43f291c | 2013-07-05 17:49:30 -0400 | [diff] [blame] | 351 | extern int nfs_attribute_cache_expired(struct inode *inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); |
| 353 | extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); |
Trond Myklebust | 44b1187 | 2006-05-25 01:40:59 -0400 | [diff] [blame] | 354 | extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | extern int nfs_setattr(struct dentry *, struct iattr *); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 356 | extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr); |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 357 | extern void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr, |
| 358 | struct nfs4_label *label); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); |
| 360 | extern void put_nfs_open_context(struct nfs_open_context *ctx); |
Trond Myklebust | dc0b027 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 361 | extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode); |
Al Viro | 5ede7b1 | 2011-10-23 18:49:54 -0400 | [diff] [blame] | 362 | extern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f_mode); |
Trond Myklebust | c45ffdd | 2013-05-29 13:34:46 -0400 | [diff] [blame] | 363 | extern void nfs_inode_attach_open_context(struct nfs_open_context *ctx); |
Trond Myklebust | cd9a1c0 | 2010-09-17 10:56:50 -0400 | [diff] [blame] | 364 | extern void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx); |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 365 | extern struct nfs_lock_context *nfs_get_lock_context(struct nfs_open_context *ctx); |
| 366 | extern void nfs_put_lock_context(struct nfs_lock_context *l_ctx); |
Trond Myklebust | f43bf0b | 2007-10-09 12:01:04 -0400 | [diff] [blame] | 367 | extern u64 nfs_compat_user_ino64(u64 fileid); |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 368 | extern void nfs_fattr_init(struct nfs_fattr *fattr); |
Chuck Lever | 56463e5 | 2010-09-17 10:54:37 -0400 | [diff] [blame] | 369 | extern unsigned long nfs_inc_attr_generation_counter(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | |
Trond Myklebust | 2d36bfde | 2010-04-16 16:22:45 -0400 | [diff] [blame] | 371 | extern struct nfs_fattr *nfs_alloc_fattr(void); |
| 372 | |
| 373 | static inline void nfs_free_fattr(const struct nfs_fattr *fattr) |
| 374 | { |
| 375 | kfree(fattr); |
| 376 | } |
| 377 | |
| 378 | extern struct nfs_fh *nfs_alloc_fhandle(void); |
| 379 | |
| 380 | static inline void nfs_free_fhandle(const struct nfs_fh *fh) |
| 381 | { |
| 382 | kfree(fh); |
| 383 | } |
| 384 | |
Trond Myklebust | e27d359 | 2012-03-18 14:07:42 -0400 | [diff] [blame] | 385 | #ifdef NFS_DEBUG |
Weston Andros Adamson | d8e0539 | 2012-03-06 20:46:43 -0500 | [diff] [blame] | 386 | extern u32 _nfs_display_fhandle_hash(const struct nfs_fh *fh); |
| 387 | static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh) |
| 388 | { |
| 389 | return _nfs_display_fhandle_hash(fh); |
| 390 | } |
Chuck Lever | 20d27e9 | 2012-03-01 17:01:31 -0500 | [diff] [blame] | 391 | extern void _nfs_display_fhandle(const struct nfs_fh *fh, const char *caption); |
| 392 | #define nfs_display_fhandle(fh, caption) \ |
| 393 | do { \ |
| 394 | if (unlikely(nfs_debug & NFSDBG_FACILITY)) \ |
| 395 | _nfs_display_fhandle(fh, caption); \ |
| 396 | } while (0) |
| 397 | #else |
Weston Andros Adamson | d8e0539 | 2012-03-06 20:46:43 -0500 | [diff] [blame] | 398 | static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh) |
| 399 | { |
Stephen Rothwell | 9304a81 | 2012-03-20 19:26:42 +1100 | [diff] [blame] | 400 | return 0; |
Weston Andros Adamson | d8e0539 | 2012-03-06 20:46:43 -0500 | [diff] [blame] | 401 | } |
Chuck Lever | 20d27e9 | 2012-03-01 17:01:31 -0500 | [diff] [blame] | 402 | static inline void nfs_display_fhandle(const struct nfs_fh *fh, |
| 403 | const char *caption) |
| 404 | { |
| 405 | } |
| 406 | #endif |
| 407 | |
Chuck Lever | 56463e5 | 2010-09-17 10:54:37 -0400 | [diff] [blame] | 408 | /* |
| 409 | * linux/fs/nfs/nfsroot.c |
| 410 | */ |
| 411 | extern int nfs_root_data(char **root_device, char **root_data); /*__init*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | /* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ |
Al Viro | 5a874db | 2006-11-08 00:19:38 -0800 | [diff] [blame] | 413 | extern __be32 root_nfs_parse_addr(char *name); /*__init*/ |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | /* |
| 416 | * linux/fs/nfs/file.c |
| 417 | */ |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 418 | extern const struct file_operations nfs_file_operations; |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 419 | #if IS_ENABLED(CONFIG_NFS_V4) |
Jeff Layton | 1788ea6 | 2011-11-04 13:31:21 -0400 | [diff] [blame] | 420 | extern const struct file_operations nfs4_file_operations; |
| 421 | #endif /* CONFIG_NFS_V4 */ |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 422 | extern const struct address_space_operations nfs_file_aops; |
Trond Myklebust | 11de3b1 | 2010-12-01 14:17:06 -0500 | [diff] [blame] | 423 | extern const struct address_space_operations nfs_dir_aops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
Trond Myklebust | c03025d | 2007-08-10 17:44:28 -0400 | [diff] [blame] | 425 | static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) |
| 426 | { |
| 427 | return filp->private_data; |
| 428 | } |
| 429 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | static inline struct rpc_cred *nfs_file_cred(struct file *file) |
| 431 | { |
Neil Brown | 504e518 | 2008-10-16 14:15:16 +1100 | [diff] [blame] | 432 | if (file != NULL) { |
| 433 | struct nfs_open_context *ctx = |
| 434 | nfs_file_open_context(file); |
| 435 | if (ctx) |
| 436 | return ctx->cred; |
| 437 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | return NULL; |
| 439 | } |
| 440 | |
| 441 | /* |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 442 | * linux/fs/nfs/xattr.c |
| 443 | */ |
| 444 | #ifdef CONFIG_NFS_V3_ACL |
| 445 | extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); |
| 446 | extern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t); |
| 447 | extern int nfs3_setxattr(struct dentry *, const char *, |
| 448 | const void *, size_t, int); |
| 449 | extern int nfs3_removexattr (struct dentry *, const char *name); |
| 450 | #else |
| 451 | # define nfs3_listxattr NULL |
| 452 | # define nfs3_getxattr NULL |
| 453 | # define nfs3_setxattr NULL |
| 454 | # define nfs3_removexattr NULL |
| 455 | #endif |
| 456 | |
| 457 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | * linux/fs/nfs/direct.c |
| 459 | */ |
| 460 | extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, |
| 461 | unsigned long); |
Badari Pulavarty | 027445c | 2006-09-30 23:28:46 -0700 | [diff] [blame] | 462 | extern ssize_t nfs_file_direct_read(struct kiocb *iocb, |
| 463 | const struct iovec *iov, unsigned long nr_segs, |
Mel Gorman | a564b8f | 2012-07-31 16:45:12 -0700 | [diff] [blame] | 464 | loff_t pos, bool uio); |
Badari Pulavarty | 027445c | 2006-09-30 23:28:46 -0700 | [diff] [blame] | 465 | extern ssize_t nfs_file_direct_write(struct kiocb *iocb, |
| 466 | const struct iovec *iov, unsigned long nr_segs, |
Mel Gorman | a564b8f | 2012-07-31 16:45:12 -0700 | [diff] [blame] | 467 | loff_t pos, bool uio); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | |
| 469 | /* |
| 470 | * linux/fs/nfs/dir.c |
| 471 | */ |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 472 | extern const struct file_operations nfs_dir_operations; |
Al Viro | f786aa9 | 2009-02-20 05:51:22 +0000 | [diff] [blame] | 473 | extern const struct dentry_operations nfs_dentry_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
Trond Myklebust | bfc69a4 | 2007-10-15 18:18:29 -0400 | [diff] [blame] | 475 | extern void nfs_force_lookup_revalidate(struct inode *dir); |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 476 | extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, |
| 477 | struct nfs_fattr *fattr, struct nfs4_label *label); |
Trond Myklebust | af22f94 | 2007-08-10 17:45:10 -0400 | [diff] [blame] | 478 | extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags); |
| 479 | extern void nfs_access_zap_cache(struct inode *inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
| 481 | /* |
| 482 | * linux/fs/nfs/symlink.c |
| 483 | */ |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 484 | extern const struct inode_operations nfs_symlink_inode_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | |
| 486 | /* |
Trond Myklebust | a72b442 | 2006-01-03 09:55:41 +0100 | [diff] [blame] | 487 | * linux/fs/nfs/sysctl.c |
| 488 | */ |
| 489 | #ifdef CONFIG_SYSCTL |
| 490 | extern int nfs_register_sysctl(void); |
| 491 | extern void nfs_unregister_sysctl(void); |
| 492 | #else |
Stephen Rothwell | 7fd105e | 2006-02-20 18:28:08 -0800 | [diff] [blame] | 493 | #define nfs_register_sysctl() 0 |
Trond Myklebust | a72b442 | 2006-01-03 09:55:41 +0100 | [diff] [blame] | 494 | #define nfs_unregister_sysctl() do { } while(0) |
| 495 | #endif |
| 496 | |
| 497 | /* |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 498 | * linux/fs/nfs/namespace.c |
| 499 | */ |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 500 | extern const struct inode_operations nfs_mountpoint_inode_operations; |
| 501 | extern const struct inode_operations nfs_referral_inode_operations; |
Trond Myklebust | 51d8fa6 | 2006-06-09 09:34:20 -0400 | [diff] [blame] | 502 | extern int nfs_mountpoint_expiry_timeout; |
| 503 | extern void nfs_release_automount_timer(void); |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 504 | |
| 505 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | * linux/fs/nfs/unlink.c |
| 507 | */ |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 508 | extern void nfs_complete_unlink(struct dentry *dentry, struct inode *); |
Trond Myklebust | ba6c059 | 2013-08-30 12:24:25 -0400 | [diff] [blame] | 509 | extern void nfs_wait_on_sillyrename(struct dentry *dentry); |
Trond Myklebust | 565277f | 2007-10-15 18:17:53 -0400 | [diff] [blame] | 510 | extern void nfs_block_sillyrename(struct dentry *dentry); |
| 511 | extern void nfs_unblock_sillyrename(struct dentry *dentry); |
Jeff Layton | 779c517 | 2010-09-17 17:31:30 -0400 | [diff] [blame] | 512 | extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
| 514 | /* |
| 515 | * linux/fs/nfs/write.c |
| 516 | */ |
Peter Zijlstra | 89a0914 | 2007-03-16 13:38:26 -0800 | [diff] [blame] | 517 | extern int nfs_congestion_kb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | extern int nfs_writepage(struct page *page, struct writeback_control *wbc); |
| 519 | extern int nfs_writepages(struct address_space *, struct writeback_control *); |
| 520 | extern int nfs_flush_incompatible(struct file *file, struct page *page); |
| 521 | extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); |
Fred Isaman | 1360289 | 2011-02-11 15:42:38 +0000 | [diff] [blame] | 522 | extern void nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | |
| 524 | /* |
| 525 | * Try to write back everything synchronously (but check the |
| 526 | * return value!) |
| 527 | */ |
Trond Myklebust | 1c75950 | 2006-10-09 16:18:38 -0400 | [diff] [blame] | 528 | extern int nfs_wb_all(struct inode *inode); |
| 529 | extern int nfs_wb_page(struct inode *inode, struct page* page); |
Trond Myklebust | 1b3b4a1 | 2007-08-28 10:29:36 -0400 | [diff] [blame] | 530 | extern int nfs_wb_page_cancel(struct inode *inode, struct page* page); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 531 | #if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) |
Trond Myklebust | b608b28 | 2010-07-30 15:31:54 -0400 | [diff] [blame] | 532 | extern int nfs_commit_inode(struct inode *, int); |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 533 | extern struct nfs_commit_data *nfs_commitdata_alloc(void); |
| 534 | extern void nfs_commit_free(struct nfs_commit_data *data); |
Trond Myklebust | 77a63f3 | 2010-08-01 13:40:40 -0400 | [diff] [blame] | 535 | #else |
| 536 | static inline int |
| 537 | nfs_commit_inode(struct inode *inode, int how) |
| 538 | { |
| 539 | return 0; |
| 540 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | #endif |
| 542 | |
| 543 | static inline int |
| 544 | nfs_have_writebacks(struct inode *inode) |
| 545 | { |
| 546 | return NFS_I(inode)->npages != 0; |
| 547 | } |
| 548 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | * linux/fs/nfs/read.c |
| 551 | */ |
| 552 | extern int nfs_readpage(struct file *, struct page *); |
| 553 | extern int nfs_readpages(struct file *, struct address_space *, |
| 554 | struct list_head *, unsigned); |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 555 | extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); |
David Howells | f42b293 | 2009-04-03 16:42:44 +0100 | [diff] [blame] | 556 | extern int nfs_readpage_async(struct nfs_open_context *, struct inode *, |
| 557 | struct page *); |
Trond Myklebust | 963d8fe | 2006-01-03 09:55:04 +0100 | [diff] [blame] | 558 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | /* |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 560 | * linux/fs/nfs3proc.c |
| 561 | */ |
| 562 | #ifdef CONFIG_NFS_V3_ACL |
Christoph Hellwig | 013cdf1 | 2013-12-20 05:16:53 -0800 | [diff] [blame^] | 563 | extern struct posix_acl *nfs3_get_acl(struct inode *inode, int type); |
| 564 | extern int nfs3_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
| 565 | extern int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, |
| 566 | struct posix_acl *dfacl); |
| 567 | extern const struct xattr_handler *nfs3_xattr_handlers[]; |
Andreas Gruenbacher | 055ffbe | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 568 | #else |
Christoph Hellwig | 013cdf1 | 2013-12-20 05:16:53 -0800 | [diff] [blame^] | 569 | static inline int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, |
| 570 | struct posix_acl *dfacl) |
Andreas Gruenbacher | 055ffbe | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 571 | { |
| 572 | return 0; |
| 573 | } |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 574 | #endif /* CONFIG_NFS_V3_ACL */ |
| 575 | |
| 576 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | * inline functions |
| 578 | */ |
| 579 | |
Chuck Lever | 433c923 | 2007-07-01 12:12:14 -0400 | [diff] [blame] | 580 | static inline loff_t nfs_size_to_loff_t(__u64 size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | { |
Chuck Lever | 433c923 | 2007-07-01 12:12:14 -0400 | [diff] [blame] | 582 | if (size > (__u64) OFFSET_MAX - 1) |
| 583 | return OFFSET_MAX - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | return (loff_t) size; |
| 585 | } |
| 586 | |
| 587 | static inline ino_t |
| 588 | nfs_fileid_to_ino_t(u64 fileid) |
| 589 | { |
| 590 | ino_t ino = (ino_t) fileid; |
| 591 | if (sizeof(ino_t) < sizeof(u64)) |
| 592 | ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; |
| 593 | return ino; |
| 594 | } |
| 595 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | #define NFS_JUKEBOX_RETRY_TIME (5 * HZ) |
| 597 | |
Benny Halevy | 4dc2eae | 2006-12-20 22:29:46 +0200 | [diff] [blame] | 598 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | # undef ifdebug |
| 600 | # ifdef NFS_DEBUG |
| 601 | # define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) |
Trond Myklebust | 6f00866 | 2012-03-20 14:12:46 -0400 | [diff] [blame] | 602 | # define NFS_IFDEBUG(x) x |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | # else |
| 604 | # define ifdebug(fac) if (0) |
Trond Myklebust | 6f00866 | 2012-03-20 14:12:46 -0400 | [diff] [blame] | 605 | # define NFS_IFDEBUG(x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | # endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | #endif |