blob: 8d75021020b31f44f0fcb9ec6f1ff05a8b39b313 [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
Trond Myklebust4ce79712005-06-22 17:16:21 +000016enum nfs4_client_state {
Trond Myklebuste005e802008-12-23 15:21:48 -050017 NFS4CLNT_MANAGER_RUNNING = 0,
Trond Myklebuste598d842008-12-23 15:21:42 -050018 NFS4CLNT_CHECK_LEASE,
Trond Myklebust58d9714a2006-01-03 09:55:24 +010019 NFS4CLNT_LEASE_EXPIRED,
Trond Myklebustb79a4a12008-12-23 15:21:41 -050020 NFS4CLNT_RECLAIM_REBOOT,
21 NFS4CLNT_RECLAIM_NOGRACE,
Trond Myklebust707fb4b2008-12-23 15:21:47 -050022 NFS4CLNT_DELEGRETURN,
Andy Adamson6df08182009-12-04 15:55:05 -050023 NFS4CLNT_SESSION_RESET,
Andy Adamsonb9efa1b2010-01-20 16:06:27 -050024 NFS4CLNT_RECALL_SLOT,
Trond Myklebustfd954ae2011-04-24 14:28:18 -040025 NFS4CLNT_LEASE_CONFIRM,
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -040026 NFS4CLNT_SERVER_SCOPE_MISMATCH,
Trond Myklebust4ce79712005-06-22 17:16:21 +000027};
28
Trond Myklebusta2118c32010-06-16 09:52:26 -040029enum nfs4_session_state {
Trond Myklebust1055d762010-06-16 09:52:27 -040030 NFS4_SESSION_INITING,
Trond Myklebusta2118c32010-06-16 09:52:26 -040031 NFS4_SESSION_DRAINING,
32};
33
Trond Myklebust2f60ea62011-08-24 15:07:37 -040034#define NFS4_RENEW_TIMEOUT 0x01
35#define NFS4_RENEW_DELEGATION_CB 0x02
36
Trond Myklebust97dc1352010-06-16 09:52:26 -040037struct nfs4_minor_version_ops {
38 u32 minor_version;
39
Bryan Schumaker7c513052011-03-24 17:12:24 +000040 int (*call_sync)(struct rpc_clnt *clnt,
41 struct nfs_server *server,
Trond Myklebust97dc1352010-06-16 09:52:26 -040042 struct rpc_message *msg,
43 struct nfs4_sequence_args *args,
44 struct nfs4_sequence_res *res,
45 int cache_reply);
Trond Myklebust36281ca2012-03-04 18:13:56 -050046 bool (*match_stateid)(const nfs4_stateid *,
Trond Myklebuste047a102010-06-16 09:52:27 -040047 const nfs4_stateid *);
Bryan Schumakerfca78d62011-06-02 14:59:07 -040048 int (*find_root_sec)(struct nfs_server *, struct nfs_fh *,
49 struct nfs_fsinfo *);
Trond Myklebustc48f4f32010-06-16 09:52:27 -040050 const struct nfs4_state_recovery_ops *reboot_recovery_ops;
51 const struct nfs4_state_recovery_ops *nograce_recovery_ops;
52 const struct nfs4_state_maintenance_ops *state_renewal_ops;
Trond Myklebust97dc1352010-06-16 09:52:26 -040053};
54
Trond Myklebust48c22eb2012-01-17 22:04:25 -050055struct nfs_unique_id {
56 struct rb_node rb_node;
57 __u64 id;
58};
59
Trond Myklebustcee54fc2005-10-18 14:20:12 -070060#define NFS_SEQID_CONFIRMED 1
61struct nfs_seqid_counter {
Trond Myklebust95b72eb2012-04-20 19:24:51 -040062 ktime_t create_time;
Trond Myklebust48c22eb2012-01-17 22:04:25 -050063 int owner_id;
Trond Myklebustcee54fc2005-10-18 14:20:12 -070064 int flags;
65 u32 counter;
Trond Myklebust7ba127a2012-01-17 22:04:25 -050066 spinlock_t lock; /* Protects the list */
67 struct list_head list; /* Defines sequence of RPC calls */
68 struct rpc_wait_queue wait; /* RPC call delay queue */
Trond Myklebustcee54fc2005-10-18 14:20:12 -070069};
70
71struct nfs_seqid {
Trond Myklebustcee54fc2005-10-18 14:20:12 -070072 struct nfs_seqid_counter *sequence;
Trond Myklebust4e513362005-10-20 14:22:41 -070073 struct list_head list;
Trond Myklebust4601df22012-01-20 18:47:05 -050074 struct rpc_task *task;
Trond Myklebustcee54fc2005-10-18 14:20:12 -070075};
76
77static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status)
78{
79 if (seqid_mutating_err(-status))
80 seqid->flags |= NFS_SEQID_CONFIRMED;
81}
82
83/*
Trond Myklebust4ce79712005-06-22 17:16:21 +000084 * NFS4 state_owners and lock_owners are simply labels for ordered
85 * sequences of RPC calls. Their sole purpose is to provide once-only
86 * semantics by allowing the server to identify replayed requests.
Trond Myklebust4ce79712005-06-22 17:16:21 +000087 */
88struct nfs4_state_owner {
Trond Myklebust6f2e64d2007-07-06 10:53:21 -040089 struct nfs_server *so_server;
Chuck Lever0aaaf5c2011-12-06 16:13:48 -050090 struct list_head so_lru;
91 unsigned long so_expires;
Chuck Lever24d292b2010-12-24 01:32:43 +000092 struct rb_node so_server_node;
Trond Myklebust4ce79712005-06-22 17:16:21 +000093
94 struct rpc_cred *so_cred; /* Associated cred */
Trond Myklebust9f958ab2007-07-02 13:58:33 -040095
96 spinlock_t so_lock;
97 atomic_t so_count;
Trond Myklebust7eff03a2008-12-23 15:21:43 -050098 unsigned long so_flags;
Trond Myklebust4ce79712005-06-22 17:16:21 +000099 struct list_head so_states;
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700100 struct nfs_seqid_counter so_seqid;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000101};
102
Trond Myklebust7eff03a2008-12-23 15:21:43 -0500103enum {
104 NFS_OWNER_RECLAIM_REBOOT,
105 NFS_OWNER_RECLAIM_NOGRACE
106};
107
Alexandros Batsakisafe6c272009-12-09 01:50:14 -0800108#define NFS_LOCK_NEW 0
109#define NFS_LOCK_RECLAIM 1
110#define NFS_LOCK_EXPIRED 2
111
Trond Myklebust4ce79712005-06-22 17:16:21 +0000112/*
113 * struct nfs4_state maintains the client-side state for a given
114 * (state_owner,inode) tuple (OPEN) or state_owner (LOCK).
115 *
116 * OPEN:
117 * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server,
118 * we need to know how many files are open for reading or writing on a
119 * given inode. This information too is stored here.
120 *
121 * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN)
122 */
123
Trond Myklebust77041ed2010-07-01 12:49:11 -0400124struct nfs4_lock_owner {
125 unsigned int lo_type;
126#define NFS4_ANY_LOCK_TYPE (0U)
127#define NFS4_FLOCK_LOCK_TYPE (1U << 0)
128#define NFS4_POSIX_LOCK_TYPE (1U << 1)
129 union {
130 fl_owner_t posix_owner;
131 pid_t flock_owner;
132 } lo_u;
133};
134
Trond Myklebust4ce79712005-06-22 17:16:21 +0000135struct nfs4_lock_state {
136 struct list_head ls_locks; /* Other lock stateids */
Trond Myklebust8d0a8a92005-06-22 17:16:32 +0000137 struct nfs4_state * ls_state; /* Pointer to open state */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000138#define NFS_LOCK_INITIALIZED 1
139 int ls_flags;
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700140 struct nfs_seqid_counter ls_seqid;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000141 nfs4_stateid ls_stateid;
142 atomic_t ls_count;
Trond Myklebust77041ed2010-07-01 12:49:11 -0400143 struct nfs4_lock_owner ls_owner;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000144};
145
146/* bits for nfs4_state->flags */
147enum {
148 LK_STATE_IN_USE,
Trond Myklebust003707c2007-07-05 18:07:55 -0400149 NFS_DELEGATED_STATE, /* Current stateid is delegation */
150 NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */
151 NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */
152 NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */
Trond Myklebustb79a4a12008-12-23 15:21:41 -0500153 NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */
154 NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */
Trond Myklebust8e469eb2010-01-26 15:42:30 -0500155 NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000156};
157
158struct nfs4_state {
159 struct list_head open_states; /* List of states for the same state_owner */
160 struct list_head inode_states; /* List of states for the same inode */
161 struct list_head lock_states; /* List of subservient lock stateids */
162
163 struct nfs4_state_owner *owner; /* Pointer to the open owner */
164 struct inode *inode; /* Pointer to the inode */
165
166 unsigned long flags; /* Do we hold any locks? */
Trond Myklebust8d0a8a92005-06-22 17:16:32 +0000167 spinlock_t state_lock; /* Protects the lock_states list */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000168
Trond Myklebust8bda4e42007-07-09 10:45:42 -0400169 seqlock_t seqlock; /* Protects the stateid/open_stateid */
Trond Myklebust003707c2007-07-05 18:07:55 -0400170 nfs4_stateid stateid; /* Current stateid: may be delegation */
171 nfs4_stateid open_stateid; /* OPEN stateid */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000172
Trond Myklebust8bda4e42007-07-09 10:45:42 -0400173 /* The following 3 fields are protected by owner->so_lock */
Trond Myklebust003707c2007-07-05 18:07:55 -0400174 unsigned int n_rdonly; /* Number of read-only references */
175 unsigned int n_wronly; /* Number of write-only references */
176 unsigned int n_rdwr; /* Number of read/write references */
Trond Myklebustdc0b0272008-12-23 15:21:56 -0500177 fmode_t state; /* State on the server (R,W, or RW) */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000178 atomic_t count;
179};
180
181
182struct nfs4_exception {
183 long timeout;
184 int retry;
Trond Myklebust9e33bed2008-12-23 15:21:46 -0500185 struct nfs4_state *state;
Trond Myklebust3114ea72012-03-07 16:39:06 -0500186 struct inode *inode;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000187};
188
189struct nfs4_state_recovery_ops {
Trond Myklebust7eff03a2008-12-23 15:21:43 -0500190 int owner_flag_bit;
Trond Myklebustb79a4a12008-12-23 15:21:41 -0500191 int state_flag_bit;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000192 int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *);
193 int (*recover_lock)(struct nfs4_state *, struct file_lock *);
Andy Adamson591d71c2009-04-01 09:22:47 -0400194 int (*establish_clid)(struct nfs_client *, struct rpc_cred *);
Andy Adamson90a16612009-04-01 09:22:48 -0400195 struct rpc_cred * (*get_clid_cred)(struct nfs_client *);
Ricardo Labiagafce5c832009-12-05 16:08:41 -0500196 int (*reclaim_complete)(struct nfs_client *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000197};
198
Benny Halevy29fba382009-04-01 09:22:44 -0400199struct nfs4_state_maintenance_ops {
Trond Myklebust2f60ea62011-08-24 15:07:37 -0400200 int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned);
Andy Adamsona7b72102009-04-01 09:22:46 -0400201 struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *);
Benny Halevy8e69514f2009-04-01 09:22:45 -0400202 int (*renew_lease)(struct nfs_client *, struct rpc_cred *);
Benny Halevy29fba382009-04-01 09:22:44 -0400203};
204
Al Virof786aa92009-02-20 05:51:22 +0000205extern const struct dentry_operations nfs4_dentry_operations;
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -0800206extern const struct inode_operations nfs4_dir_inode_operations;
J. Bruce Fields6b3b5492005-06-22 17:16:22 +0000207
Bryan Schumaker72de53e2012-04-27 13:27:40 -0400208/* nfs4namespace.c */
209struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *);
210
Trond Myklebust4ce79712005-06-22 17:16:21 +0000211/* nfs4proc.c */
Trond Myklebustbb8b27e2010-04-16 16:43:06 -0400212extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *);
213extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *);
Andy Adamson4d643d12009-12-04 15:52:24 -0500214extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred);
Andy Adamson591d71c2009-04-01 09:22:47 -0400215extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
Andy Adamson4d643d12009-12-04 15:52:24 -0500216extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
Al Viro643168c2011-06-22 18:20:23 -0400217extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc);
Trond Myklebust55a97592006-06-09 09:34:19 -0400218extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle);
Bryan Schumakerf05d1472012-04-27 13:27:41 -0400219extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *,
220 struct nfs4_fs_locations *, struct page *);
221extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, struct qstr *,
222 struct nfs_fh *, struct nfs_fattr *);
Bryan Schumaker72de53e2012-04-27 13:27:40 -0400223extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
Trond Myklebustcf470c32012-03-07 13:49:12 -0500224extern int nfs4_release_lockowner(struct nfs4_lock_state *);
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +0000225extern const struct xattr_handler *nfs4_xattr_handlers[];
Trond Myklebust4ce79712005-06-22 17:16:21 +0000226
Andy Adamson557134a2009-04-01 09:21:53 -0400227#if defined(CONFIG_NFS_V4_1)
Trond Myklebust035168a2010-06-16 09:52:26 -0400228static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server)
229{
230 return server->nfs_client->cl_session;
231}
232
Trond Myklebust961a8282012-01-17 22:57:37 -0500233extern bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy);
Trond Myklebust035168a2010-06-16 09:52:26 -0400234extern int nfs4_setup_sequence(const struct nfs_server *server,
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400235 struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
Trond Myklebust9d12b212012-01-17 22:04:25 -0500236 struct rpc_task *task);
Andy Adamsondc70d7b2011-03-01 01:34:19 +0000237extern int nfs41_setup_sequence(struct nfs4_session *session,
238 struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
Trond Myklebust9d12b212012-01-17 22:04:25 -0500239 struct rpc_task *task);
Andy Adamson557134a2009-04-01 09:21:53 -0400240extern void nfs4_destroy_session(struct nfs4_session *session);
241extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp);
Trond Myklebustf26468f2009-12-05 19:32:11 -0500242extern int nfs4_proc_create_session(struct nfs_client *);
Andy Adamsonc3fad1b2009-04-01 09:22:39 -0400243extern int nfs4_proc_destroy_session(struct nfs4_session *);
Trond Myklebustfccba802009-07-21 16:48:07 -0400244extern int nfs4_init_session(struct nfs_server *server);
Ricardo Labiaga9430fb62009-12-06 12:23:46 -0500245extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
246 struct nfs_fsinfo *fsinfo);
Andy Adamson863a3c62011-03-23 13:27:54 +0000247extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data,
Andy Adamsonef311532011-03-12 02:58:10 -0500248 bool sync);
Andy Adamson94de8b22011-03-01 01:34:12 +0000249
250static inline bool
251is_ds_only_client(struct nfs_client *clp)
252{
253 return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) ==
254 EXCHGID4_FLAG_USE_PNFS_DS;
255}
Andy Adamsond83217c2011-03-01 01:34:17 +0000256
257static inline bool
258is_ds_client(struct nfs_client *clp)
259{
260 return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS;
261}
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400262#else /* CONFIG_NFS_v4_1 */
Trond Myklebust035168a2010-06-16 09:52:26 -0400263static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server)
264{
265 return NULL;
266}
267
268static inline int nfs4_setup_sequence(const struct nfs_server *server,
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400269 struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
Trond Myklebust9d12b212012-01-17 22:04:25 -0500270 struct rpc_task *task)
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400271{
272 return 0;
273}
Trond Myklebustfccba802009-07-21 16:48:07 -0400274
275static inline int nfs4_init_session(struct nfs_server *server)
276{
277 return 0;
278}
Andy Adamson94de8b22011-03-01 01:34:12 +0000279
280static inline bool
281is_ds_only_client(struct nfs_client *clp)
282{
283 return false;
284}
Andy Adamsond83217c2011-03-01 01:34:17 +0000285
286static inline bool
287is_ds_client(struct nfs_client *clp)
288{
289 return false;
290}
Andy Adamson557134a2009-04-01 09:21:53 -0400291#endif /* CONFIG_NFS_V4_1 */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000292
Trond Myklebust97dc1352010-06-16 09:52:26 -0400293extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[];
Benny Halevy29fba382009-04-01 09:22:44 -0400294
Trond Myklebust4ce79712005-06-22 17:16:21 +0000295extern const u32 nfs4_fattr_bitmap[2];
296extern const u32 nfs4_statfs_bitmap[2];
297extern const u32 nfs4_pathconf_bitmap[2];
Fred Isamandae100c2011-07-30 20:52:37 -0400298extern const u32 nfs4_fsinfo_bitmap[3];
Manoj Naik830b8e32006-06-09 09:34:25 -0400299extern const u32 nfs4_fs_locations_bitmap[2];
Trond Myklebust4ce79712005-06-22 17:16:21 +0000300
301/* nfs4renewd.c */
David Howellsadfa6f92006-08-22 20:06:08 -0400302extern void nfs4_schedule_state_renewal(struct nfs_client *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000303extern void nfs4_renewd_prepare_shutdown(struct nfs_server *);
David Howellsadfa6f92006-08-22 20:06:08 -0400304extern void nfs4_kill_renewd(struct nfs_client *);
David Howells65f27f32006-11-22 14:55:48 +0000305extern void nfs4_renew_state(struct work_struct *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000306
307/* nfs4state.c */
Andy Adamsona7b72102009-04-01 09:22:46 -0400308struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp);
Trond Myklebust6dc9d572008-12-23 15:21:41 -0500309struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp);
Andy Adamsona7b72102009-04-01 09:22:46 -0400310#if defined(CONFIG_NFS_V4_1)
311struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp);
Andy Adamsonb4b82602009-04-01 09:22:49 -0400312struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp);
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500313extern void nfs4_schedule_session_recovery(struct nfs4_session *);
314#else
315static inline void nfs4_schedule_session_recovery(struct nfs4_session *session)
316{
317}
Andy Adamsona7b72102009-04-01 09:22:46 -0400318#endif /* CONFIG_NFS_V4_1 */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000319
Trond Myklebustd1e284d2012-01-17 22:04:24 -0500320extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000321extern void nfs4_put_state_owner(struct nfs4_state_owner *);
Chuck Lever0aaaf5c2011-12-06 16:13:48 -0500322extern void nfs4_purge_state_owners(struct nfs_server *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000323extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
324extern void nfs4_put_open_state(struct nfs4_state *);
Al Viro643168c2011-06-22 18:20:23 -0400325extern void nfs4_close_state(struct nfs4_state *, fmode_t);
326extern void nfs4_close_sync(struct nfs4_state *, fmode_t);
Trond Myklebustdc0b0272008-12-23 15:21:56 -0500327extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t);
Trond Myklebusta1d0b5e2012-03-05 19:56:44 -0500328extern void nfs_inode_find_state_and_recover(struct inode *inode,
329 const nfs4_stateid *stateid);
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500330extern void nfs4_schedule_lease_recovery(struct nfs_client *);
Trond Myklebustb0d3ded2008-12-23 15:21:50 -0500331extern void nfs4_schedule_state_manager(struct nfs_client *);
Trond Myklebust042b60b2011-08-24 15:07:37 -0400332extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp);
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500333extern void nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *);
Alexandros Batsakis0629e372009-12-05 13:46:14 -0500334extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
Andy Adamsonb9efa1b2010-01-20 16:06:27 -0500335extern void nfs41_handle_recall_slot(struct nfs_client *clp);
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -0400336extern void nfs41_handle_server_scope(struct nfs_client *,
337 struct server_scope **);
Trond Myklebustfaf5f492005-10-18 14:20:15 -0700338extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
Trond Myklebust8d0a8a92005-06-22 17:16:32 +0000339extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl);
Trond Myklebust4fc87962012-03-08 17:42:01 -0500340extern void nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *,
341 fmode_t, fl_owner_t, pid_t);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000342
Trond Myklebust8535b2b2010-05-13 12:51:01 -0400343extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask);
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700344extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task);
345extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid);
346extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid);
Trond Myklebust72211db2009-12-15 14:47:36 -0500347extern void nfs_release_seqid(struct nfs_seqid *seqid);
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700348extern void nfs_free_seqid(struct nfs_seqid *seqid);
349
Trond Myklebust5ae67c42012-03-19 16:17:18 -0400350extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp);
Trond Myklebustcf470c32012-03-07 13:49:12 -0500351
Trond Myklebust4ce79712005-06-22 17:16:21 +0000352extern const nfs4_stateid zero_stateid;
353
354/* nfs4xdr.c */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000355extern struct rpc_procinfo nfs4_procedures[];
356
357struct nfs4_mount_data;
358
359/* callback_xdr.c */
360extern struct svc_version nfs4_callback_version1;
Alexandros Batsakis07bccc22009-12-05 13:19:01 -0500361extern struct svc_version nfs4_callback_version4;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000362
Trond Myklebustf597c532012-03-04 18:13:56 -0500363static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src)
364{
Trond Myklebust2d2f24a2012-03-04 18:13:57 -0500365 memcpy(dst, src, sizeof(*dst));
Trond Myklebustf597c532012-03-04 18:13:56 -0500366}
367
368static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src)
369{
Trond Myklebust2d2f24a2012-03-04 18:13:57 -0500370 return memcmp(dst, src, sizeof(*dst)) == 0;
Trond Myklebustf597c532012-03-04 18:13:56 -0500371}
372
Trond Myklebust4ce79712005-06-22 17:16:21 +0000373#else
374
Al Viro643168c2011-06-22 18:20:23 -0400375#define nfs4_close_state(a, b) do { } while (0)
376#define nfs4_close_sync(a, b) do { } while (0)
Trond Myklebust4ce79712005-06-22 17:16:21 +0000377
378#endif /* CONFIG_NFS_V4 */
379#endif /* __LINUX_FS_NFS_NFS4_FS.H */