blob: 311e15cc8af0c961074714a738bc87ff4b7021d5 [file] [log] [blame]
Trond Myklebust4ce79712005-06-22 17:16:21 +00001/*
2 * linux/fs/nfs/nfs4_fs.h
3 *
4 * Copyright (C) 2005 Trond Myklebust
5 *
6 * NFSv4-specific filesystem definitions and declarations
7 */
8
9#ifndef __LINUX_FS_NFS_NFS4_FS_H
10#define __LINUX_FS_NFS_NFS4_FS_H
11
12#ifdef CONFIG_NFS_V4
13
14struct idmap;
15
16/*
17 * In a seqid-mutating op, this macro controls which error return
18 * values trigger incrementation of the seqid.
19 *
20 * from rfc 3010:
21 * The client MUST monotonically increment the sequence number for the
22 * CLOSE, LOCK, LOCKU, OPEN, OPEN_CONFIRM, and OPEN_DOWNGRADE
23 * operations. This is true even in the event that the previous
24 * operation that used the sequence number received an error. The only
25 * exception to this rule is if the previous operation received one of
26 * the following errors: NFSERR_STALE_CLIENTID, NFSERR_STALE_STATEID,
27 * NFSERR_BAD_STATEID, NFSERR_BAD_SEQID, NFSERR_BADXDR,
28 * NFSERR_RESOURCE, NFSERR_NOFILEHANDLE.
29 *
30 */
31#define seqid_mutating_err(err) \
32(((err) != NFSERR_STALE_CLIENTID) && \
33 ((err) != NFSERR_STALE_STATEID) && \
34 ((err) != NFSERR_BAD_STATEID) && \
35 ((err) != NFSERR_BAD_SEQID) && \
36 ((err) != NFSERR_BAD_XDR) && \
37 ((err) != NFSERR_RESOURCE) && \
38 ((err) != NFSERR_NOFILEHANDLE))
39
40enum nfs4_client_state {
Trond Myklebuste005e802008-12-23 15:21:48 -050041 NFS4CLNT_MANAGER_RUNNING = 0,
Trond Myklebuste598d842008-12-23 15:21:42 -050042 NFS4CLNT_CHECK_LEASE,
Trond Myklebust58d97142006-01-03 09:55:24 +010043 NFS4CLNT_LEASE_EXPIRED,
Trond Myklebustb79a4a12008-12-23 15:21:41 -050044 NFS4CLNT_RECLAIM_REBOOT,
45 NFS4CLNT_RECLAIM_NOGRACE,
Trond Myklebust707fb4b2008-12-23 15:21:47 -050046 NFS4CLNT_DELEGRETURN,
Andy Adamson6df08182009-12-04 15:55:05 -050047 NFS4CLNT_SESSION_RESET,
Andy Adamsonb9efa1b2010-01-20 16:06:27 -050048 NFS4CLNT_RECALL_SLOT,
Trond Myklebust4ce79712005-06-22 17:16:21 +000049};
50
Trond Myklebusta2118c32010-06-16 09:52:26 -040051enum nfs4_session_state {
Trond Myklebust1055d762010-06-16 09:52:27 -040052 NFS4_SESSION_INITING,
Trond Myklebusta2118c32010-06-16 09:52:26 -040053 NFS4_SESSION_DRAINING,
54};
55
Trond Myklebust97dc1352010-06-16 09:52:26 -040056struct nfs4_minor_version_ops {
57 u32 minor_version;
58
59 int (*call_sync)(struct nfs_server *server,
60 struct rpc_message *msg,
61 struct nfs4_sequence_args *args,
62 struct nfs4_sequence_res *res,
63 int cache_reply);
Trond Myklebuste047a102010-06-16 09:52:27 -040064 int (*validate_stateid)(struct nfs_delegation *,
65 const nfs4_stateid *);
Trond Myklebustc48f4f32010-06-16 09:52:27 -040066 const struct nfs4_state_recovery_ops *reboot_recovery_ops;
67 const struct nfs4_state_recovery_ops *nograce_recovery_ops;
68 const struct nfs4_state_maintenance_ops *state_renewal_ops;
Trond Myklebust97dc1352010-06-16 09:52:26 -040069};
70
Trond Myklebust4ce79712005-06-22 17:16:21 +000071/*
Trond Myklebustcee54fc2005-10-18 14:20:12 -070072 * struct rpc_sequence ensures that RPC calls are sent in the exact
73 * order that they appear on the list.
74 */
75struct rpc_sequence {
76 struct rpc_wait_queue wait; /* RPC call delay queue */
77 spinlock_t lock; /* Protects the list */
78 struct list_head list; /* Defines sequence of RPC calls */
79};
80
81#define NFS_SEQID_CONFIRMED 1
82struct nfs_seqid_counter {
83 struct rpc_sequence *sequence;
84 int flags;
85 u32 counter;
86};
87
88struct nfs_seqid {
Trond Myklebustcee54fc2005-10-18 14:20:12 -070089 struct nfs_seqid_counter *sequence;
Trond Myklebust4e513362005-10-20 14:22:41 -070090 struct list_head list;
Trond Myklebustcee54fc2005-10-18 14:20:12 -070091};
92
93static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status)
94{
95 if (seqid_mutating_err(-status))
96 seqid->flags |= NFS_SEQID_CONFIRMED;
97}
98
Trond Myklebust9f958ab2007-07-02 13:58:33 -040099struct nfs_unique_id {
100 struct rb_node rb_node;
101 __u64 id;
102};
103
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700104/*
Trond Myklebust4ce79712005-06-22 17:16:21 +0000105 * NFS4 state_owners and lock_owners are simply labels for ordered
106 * sequences of RPC calls. Their sole purpose is to provide once-only
107 * semantics by allowing the server to identify replayed requests.
Trond Myklebust4ce79712005-06-22 17:16:21 +0000108 */
109struct nfs4_state_owner {
Trond Myklebust9f958ab2007-07-02 13:58:33 -0400110 struct nfs_unique_id so_owner_id;
Trond Myklebust6f2e64d2007-07-06 10:53:21 -0400111 struct nfs_server *so_server;
Trond Myklebust9f958ab2007-07-02 13:58:33 -0400112 struct rb_node so_client_node;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000113
114 struct rpc_cred *so_cred; /* Associated cred */
Trond Myklebust9f958ab2007-07-02 13:58:33 -0400115
116 spinlock_t so_lock;
117 atomic_t so_count;
Trond Myklebust7eff03a2008-12-23 15:21:43 -0500118 unsigned long so_flags;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000119 struct list_head so_states;
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700120 struct nfs_seqid_counter so_seqid;
121 struct rpc_sequence so_sequence;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000122};
123
Trond Myklebust7eff03a2008-12-23 15:21:43 -0500124enum {
125 NFS_OWNER_RECLAIM_REBOOT,
126 NFS_OWNER_RECLAIM_NOGRACE
127};
128
Alexandros Batsakisafe6c272009-12-09 01:50:14 -0800129#define NFS_LOCK_NEW 0
130#define NFS_LOCK_RECLAIM 1
131#define NFS_LOCK_EXPIRED 2
132
Trond Myklebust4ce79712005-06-22 17:16:21 +0000133/*
134 * struct nfs4_state maintains the client-side state for a given
135 * (state_owner,inode) tuple (OPEN) or state_owner (LOCK).
136 *
137 * OPEN:
138 * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server,
139 * we need to know how many files are open for reading or writing on a
140 * given inode. This information too is stored here.
141 *
142 * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN)
143 */
144
Trond Myklebust77041ed2010-07-01 12:49:11 -0400145struct nfs4_lock_owner {
146 unsigned int lo_type;
147#define NFS4_ANY_LOCK_TYPE (0U)
148#define NFS4_FLOCK_LOCK_TYPE (1U << 0)
149#define NFS4_POSIX_LOCK_TYPE (1U << 1)
150 union {
151 fl_owner_t posix_owner;
152 pid_t flock_owner;
153 } lo_u;
154};
155
Trond Myklebust4ce79712005-06-22 17:16:21 +0000156struct nfs4_lock_state {
157 struct list_head ls_locks; /* Other lock stateids */
Trond Myklebust8d0a8a92005-06-22 17:16:32 +0000158 struct nfs4_state * ls_state; /* Pointer to open state */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000159#define NFS_LOCK_INITIALIZED 1
160 int ls_flags;
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700161 struct nfs_seqid_counter ls_seqid;
Trond Myklebustd0dc3702008-01-10 16:07:54 -0500162 struct rpc_sequence ls_sequence;
Trond Myklebust9f958ab2007-07-02 13:58:33 -0400163 struct nfs_unique_id ls_id;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000164 nfs4_stateid ls_stateid;
165 atomic_t ls_count;
Trond Myklebust77041ed2010-07-01 12:49:11 -0400166 struct nfs4_lock_owner ls_owner;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000167};
168
169/* bits for nfs4_state->flags */
170enum {
171 LK_STATE_IN_USE,
Trond Myklebust003707c2007-07-05 18:07:55 -0400172 NFS_DELEGATED_STATE, /* Current stateid is delegation */
173 NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */
174 NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */
175 NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */
Trond Myklebustb79a4a12008-12-23 15:21:41 -0500176 NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */
177 NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */
Trond Myklebust8e469eb2010-01-26 15:42:30 -0500178 NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000179};
180
181struct nfs4_state {
182 struct list_head open_states; /* List of states for the same state_owner */
183 struct list_head inode_states; /* List of states for the same inode */
184 struct list_head lock_states; /* List of subservient lock stateids */
185
186 struct nfs4_state_owner *owner; /* Pointer to the open owner */
187 struct inode *inode; /* Pointer to the inode */
188
189 unsigned long flags; /* Do we hold any locks? */
Trond Myklebust8d0a8a92005-06-22 17:16:32 +0000190 spinlock_t state_lock; /* Protects the lock_states list */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000191
Trond Myklebust8bda4e42007-07-09 10:45:42 -0400192 seqlock_t seqlock; /* Protects the stateid/open_stateid */
Trond Myklebust003707c2007-07-05 18:07:55 -0400193 nfs4_stateid stateid; /* Current stateid: may be delegation */
194 nfs4_stateid open_stateid; /* OPEN stateid */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000195
Trond Myklebust8bda4e42007-07-09 10:45:42 -0400196 /* The following 3 fields are protected by owner->so_lock */
Trond Myklebust003707c2007-07-05 18:07:55 -0400197 unsigned int n_rdonly; /* Number of read-only references */
198 unsigned int n_wronly; /* Number of write-only references */
199 unsigned int n_rdwr; /* Number of read/write references */
Trond Myklebustdc0b0272008-12-23 15:21:56 -0500200 fmode_t state; /* State on the server (R,W, or RW) */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000201 atomic_t count;
202};
203
204
205struct nfs4_exception {
206 long timeout;
207 int retry;
Trond Myklebust9e33bed2008-12-23 15:21:46 -0500208 struct nfs4_state *state;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000209};
210
211struct nfs4_state_recovery_ops {
Trond Myklebust7eff03a2008-12-23 15:21:43 -0500212 int owner_flag_bit;
Trond Myklebustb79a4a12008-12-23 15:21:41 -0500213 int state_flag_bit;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000214 int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *);
215 int (*recover_lock)(struct nfs4_state *, struct file_lock *);
Andy Adamson591d71c2009-04-01 09:22:47 -0400216 int (*establish_clid)(struct nfs_client *, struct rpc_cred *);
Andy Adamson90a16612009-04-01 09:22:48 -0400217 struct rpc_cred * (*get_clid_cred)(struct nfs_client *);
Ricardo Labiagafce5c832009-12-05 16:08:41 -0500218 int (*reclaim_complete)(struct nfs_client *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000219};
220
Benny Halevy29fba382009-04-01 09:22:44 -0400221struct nfs4_state_maintenance_ops {
222 int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *);
Andy Adamsona7b72102009-04-01 09:22:46 -0400223 struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *);
Benny Halevy8e69514f2009-04-01 09:22:45 -0400224 int (*renew_lease)(struct nfs_client *, struct rpc_cred *);
Benny Halevy29fba382009-04-01 09:22:44 -0400225};
226
Al Virof786aa92009-02-20 05:51:22 +0000227extern const struct dentry_operations nfs4_dentry_operations;
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -0800228extern const struct inode_operations nfs4_dir_inode_operations;
J. Bruce Fields6b3b5492005-06-22 17:16:22 +0000229
230/* inode.c */
231extern ssize_t nfs4_getxattr(struct dentry *, const char *, void *, size_t);
232extern int nfs4_setxattr(struct dentry *, const char *, const void *, size_t, int);
233extern ssize_t nfs4_listxattr(struct dentry *, char *, size_t);
234
Trond Myklebust4ce79712005-06-22 17:16:21 +0000235
236/* nfs4proc.c */
Trond Myklebustbb8b27e2010-04-16 16:43:06 -0400237extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *);
238extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *);
Andy Adamson4d643d12009-12-04 15:52:24 -0500239extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred);
David Howellsadfa6f92006-08-22 20:06:08 -0400240extern int nfs4_proc_async_renew(struct nfs_client *, struct rpc_cred *);
241extern int nfs4_proc_renew(struct nfs_client *, struct rpc_cred *);
Andy Adamson591d71c2009-04-01 09:22:47 -0400242extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
Andy Adamson4d643d12009-12-04 15:52:24 -0500243extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
Trond Myklebust8535b2b2010-05-13 12:51:01 -0400244extern int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait);
Trond Myklebust02a913a2005-10-18 14:20:17 -0700245extern struct dentry *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *);
246extern int nfs4_open_revalidate(struct inode *, struct dentry *, int, struct nameidata *);
Trond Myklebust55a97592006-06-09 09:34:19 -0400247extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle);
Trond Myklebust56659e92007-07-17 21:52:39 -0400248extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
Manoj Naik7aaa0b32006-06-09 09:34:23 -0400249 struct nfs4_fs_locations *fs_locations, struct page *page);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -0400250extern void nfs4_release_lockowner(const struct nfs4_lock_state *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000251
Andy Adamson557134a2009-04-01 09:21:53 -0400252#if defined(CONFIG_NFS_V4_1)
Trond Myklebust035168a2010-06-16 09:52:26 -0400253static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server)
254{
255 return server->nfs_client->cl_session;
256}
257
258extern int nfs4_setup_sequence(const struct nfs_server *server,
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400259 struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
260 int cache_reply, struct rpc_task *task);
Andy Adamson557134a2009-04-01 09:21:53 -0400261extern void nfs4_destroy_session(struct nfs4_session *session);
262extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp);
Trond Myklebustf26468f2009-12-05 19:32:11 -0500263extern int nfs4_proc_create_session(struct nfs_client *);
Andy Adamsonc3fad1b2009-04-01 09:22:39 -0400264extern int nfs4_proc_destroy_session(struct nfs4_session *);
Trond Myklebustfccba802009-07-21 16:48:07 -0400265extern int nfs4_init_session(struct nfs_server *server);
Ricardo Labiaga9430fb62009-12-06 12:23:46 -0500266extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
267 struct nfs_fsinfo *fsinfo);
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400268#else /* CONFIG_NFS_v4_1 */
Trond Myklebust035168a2010-06-16 09:52:26 -0400269static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server)
270{
271 return NULL;
272}
273
274static inline int nfs4_setup_sequence(const struct nfs_server *server,
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400275 struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
276 int cache_reply, struct rpc_task *task)
277{
278 return 0;
279}
Trond Myklebustfccba802009-07-21 16:48:07 -0400280
281static inline int nfs4_init_session(struct nfs_server *server)
282{
283 return 0;
284}
Andy Adamson557134a2009-04-01 09:21:53 -0400285#endif /* CONFIG_NFS_V4_1 */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000286
Trond Myklebust97dc1352010-06-16 09:52:26 -0400287extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[];
Benny Halevy29fba382009-04-01 09:22:44 -0400288
Trond Myklebust4ce79712005-06-22 17:16:21 +0000289extern const u32 nfs4_fattr_bitmap[2];
290extern const u32 nfs4_statfs_bitmap[2];
291extern const u32 nfs4_pathconf_bitmap[2];
292extern const u32 nfs4_fsinfo_bitmap[2];
Manoj Naik830b8e32006-06-09 09:34:25 -0400293extern const u32 nfs4_fs_locations_bitmap[2];
Trond Myklebust4ce79712005-06-22 17:16:21 +0000294
295/* nfs4renewd.c */
David Howellsadfa6f92006-08-22 20:06:08 -0400296extern void nfs4_schedule_state_renewal(struct nfs_client *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000297extern void nfs4_renewd_prepare_shutdown(struct nfs_server *);
David Howellsadfa6f92006-08-22 20:06:08 -0400298extern void nfs4_kill_renewd(struct nfs_client *);
David Howells65f27f32006-11-22 14:55:48 +0000299extern void nfs4_renew_state(struct work_struct *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000300
301/* nfs4state.c */
Andy Adamsona7b72102009-04-01 09:22:46 -0400302struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp);
Trond Myklebust6dc9d572008-12-23 15:21:41 -0500303struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp);
Andy Adamsona7b72102009-04-01 09:22:46 -0400304#if defined(CONFIG_NFS_V4_1)
305struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp);
Andy Adamsonb4b82602009-04-01 09:22:49 -0400306struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp);
Andy Adamsona7b72102009-04-01 09:22:46 -0400307#endif /* CONFIG_NFS_V4_1 */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000308
309extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
310extern void nfs4_put_state_owner(struct nfs4_state_owner *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000311extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
312extern void nfs4_put_open_state(struct nfs4_state *);
Trond Myklebustdc0b0272008-12-23 15:21:56 -0500313extern void nfs4_close_state(struct path *, struct nfs4_state *, fmode_t);
314extern void nfs4_close_sync(struct path *, struct nfs4_state *, fmode_t);
315extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t);
David Howellsadfa6f92006-08-22 20:06:08 -0400316extern void nfs4_schedule_state_recovery(struct nfs_client *);
Trond Myklebustb0d3ded2008-12-23 15:21:50 -0500317extern void nfs4_schedule_state_manager(struct nfs_client *);
Trond Myklebust9e33bed2008-12-23 15:21:46 -0500318extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state);
Trond Myklebusta2c0b9e2010-01-26 15:42:47 -0500319extern int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state);
Alexandros Batsakis0629e372009-12-05 13:46:14 -0500320extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
Andy Adamsonb9efa1b2010-01-20 16:06:27 -0500321extern void nfs41_handle_recall_slot(struct nfs_client *clp);
Trond Myklebustfaf5f492005-10-18 14:20:15 -0700322extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
Trond Myklebust8d0a8a92005-06-22 17:16:32 +0000323extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl);
Trond Myklebust77041ed2010-07-01 12:49:11 -0400324extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t, pid_t);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000325
Trond Myklebust8535b2b2010-05-13 12:51:01 -0400326extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask);
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700327extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task);
328extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid);
329extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid);
Trond Myklebust72211db2009-12-15 14:47:36 -0500330extern void nfs_release_seqid(struct nfs_seqid *seqid);
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700331extern void nfs_free_seqid(struct nfs_seqid *seqid);
332
Trond Myklebust4ce79712005-06-22 17:16:21 +0000333extern const nfs4_stateid zero_stateid;
334
335/* nfs4xdr.c */
Al Viro0dbb4c62006-10-19 23:28:49 -0700336extern __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000337extern struct rpc_procinfo nfs4_procedures[];
338
339struct nfs4_mount_data;
340
341/* callback_xdr.c */
342extern struct svc_version nfs4_callback_version1;
Alexandros Batsakis07bccc22009-12-05 13:19:01 -0500343extern struct svc_version nfs4_callback_version4;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000344
345#else
346
Trond Myklebust4a35bd42007-06-05 10:31:33 -0400347#define nfs4_close_state(a, b, c) do { } while (0)
Olof Johanssone9a40452007-10-19 20:41:49 -0500348#define nfs4_close_sync(a, b, c) do { } while (0)
Trond Myklebust4ce79712005-06-22 17:16:21 +0000349
350#endif /* CONFIG_NFS_V4 */
351#endif /* __LINUX_FS_NFS_NFS4_FS.H */