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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
Bryan Schumaker89d77c82012-07-30 16:05:25 -040012#if IS_ENABLED(CONFIG_NFS_V4)
Trond Myklebust4ce79712005-06-22 17:16:21 +000013
Trond Myklebust33021272012-11-26 13:13:29 -050014#define NFS4_MAX_LOOP_ON_RECOVER (10)
15
Trond Myklebustc137afa2013-02-07 14:41:11 -050016#include <linux/seqlock.h>
17
Trond Myklebust4ce79712005-06-22 17:16:21 +000018struct idmap;
19
Trond Myklebust4ce79712005-06-22 17:16:21 +000020enum nfs4_client_state {
Trond Myklebuste005e802008-12-23 15:21:48 -050021 NFS4CLNT_MANAGER_RUNNING = 0,
Trond Myklebuste598d842008-12-23 15:21:42 -050022 NFS4CLNT_CHECK_LEASE,
Trond Myklebust58d97142006-01-03 09:55:24 +010023 NFS4CLNT_LEASE_EXPIRED,
Trond Myklebustb79a4a12008-12-23 15:21:41 -050024 NFS4CLNT_RECLAIM_REBOOT,
25 NFS4CLNT_RECLAIM_NOGRACE,
Trond Myklebust707fb4b2008-12-23 15:21:47 -050026 NFS4CLNT_DELEGRETURN,
Andy Adamson6df08182009-12-04 15:55:05 -050027 NFS4CLNT_SESSION_RESET,
Trond Myklebustfd954ae2011-04-24 14:28:18 -040028 NFS4CLNT_LEASE_CONFIRM,
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -040029 NFS4CLNT_SERVER_SCOPE_MISMATCH,
Chuck Lever2c820d92012-05-21 22:45:33 -040030 NFS4CLNT_PURGE_STATE,
Weston Andros Adamsona9e64442012-05-24 12:26:37 -040031 NFS4CLNT_BIND_CONN_TO_SESSION,
Trond Myklebust4ce79712005-06-22 17:16:21 +000032};
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,
Trond Myklebustfd0c0952012-11-01 14:43:38 -040044 struct nfs4_sequence_res *res);
Trond Myklebust36281ca2012-03-04 18:13:56 -050045 bool (*match_stateid)(const nfs4_stateid *,
Trond Myklebuste047a102010-06-16 09:52:27 -040046 const nfs4_stateid *);
Bryan Schumakerfca78d62011-06-02 14:59:07 -040047 int (*find_root_sec)(struct nfs_server *, struct nfs_fh *,
48 struct nfs_fsinfo *);
Trond Myklebustc48f4f32010-06-16 09:52:27 -040049 const struct nfs4_state_recovery_ops *reboot_recovery_ops;
50 const struct nfs4_state_recovery_ops *nograce_recovery_ops;
51 const struct nfs4_state_maintenance_ops *state_renewal_ops;
Trond Myklebust97dc1352010-06-16 09:52:26 -040052};
53
Trond Myklebustcee54fc2005-10-18 14:20:12 -070054#define NFS_SEQID_CONFIRMED 1
55struct nfs_seqid_counter {
Trond Myklebust95b72eb2012-04-20 19:24:51 -040056 ktime_t create_time;
Trond Myklebust48c22eb2012-01-17 22:04:25 -050057 int owner_id;
Trond Myklebustcee54fc2005-10-18 14:20:12 -070058 int flags;
59 u32 counter;
Trond Myklebust7ba127a2012-01-17 22:04:25 -050060 spinlock_t lock; /* Protects the list */
61 struct list_head list; /* Defines sequence of RPC calls */
62 struct rpc_wait_queue wait; /* RPC call delay queue */
Trond Myklebustcee54fc2005-10-18 14:20:12 -070063};
64
65struct nfs_seqid {
Trond Myklebustcee54fc2005-10-18 14:20:12 -070066 struct nfs_seqid_counter *sequence;
Trond Myklebust4e513362005-10-20 14:22:41 -070067 struct list_head list;
Trond Myklebust4601df22012-01-20 18:47:05 -050068 struct rpc_task *task;
Trond Myklebustcee54fc2005-10-18 14:20:12 -070069};
70
71static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status)
72{
73 if (seqid_mutating_err(-status))
74 seqid->flags |= NFS_SEQID_CONFIRMED;
75}
76
77/*
Trond Myklebust4ce79712005-06-22 17:16:21 +000078 * NFS4 state_owners and lock_owners are simply labels for ordered
79 * sequences of RPC calls. Their sole purpose is to provide once-only
80 * semantics by allowing the server to identify replayed requests.
Trond Myklebust4ce79712005-06-22 17:16:21 +000081 */
82struct nfs4_state_owner {
Trond Myklebust6f2e64d2007-07-06 10:53:21 -040083 struct nfs_server *so_server;
Chuck Lever0aaaf5c2011-12-06 16:13:48 -050084 struct list_head so_lru;
85 unsigned long so_expires;
Chuck Lever24d292b2010-12-24 01:32:43 +000086 struct rb_node so_server_node;
Trond Myklebust4ce79712005-06-22 17:16:21 +000087
88 struct rpc_cred *so_cred; /* Associated cred */
Trond Myklebust9f958ab2007-07-02 13:58:33 -040089
90 spinlock_t so_lock;
91 atomic_t so_count;
Trond Myklebust7eff03a2008-12-23 15:21:43 -050092 unsigned long so_flags;
Trond Myklebust4ce79712005-06-22 17:16:21 +000093 struct list_head so_states;
Trond Myklebustcee54fc2005-10-18 14:20:12 -070094 struct nfs_seqid_counter so_seqid;
Trond Myklebustc137afa2013-02-07 14:41:11 -050095 seqcount_t so_reclaim_seqcount;
Trond Myklebust65b62a22013-02-07 10:54:07 -050096 struct mutex so_delegreturn_mutex;
Trond Myklebust4ce79712005-06-22 17:16:21 +000097};
98
Trond Myklebust7eff03a2008-12-23 15:21:43 -050099enum {
100 NFS_OWNER_RECLAIM_REBOOT,
101 NFS_OWNER_RECLAIM_NOGRACE
102};
103
Alexandros Batsakisafe6c272009-12-09 01:50:14 -0800104#define NFS_LOCK_NEW 0
105#define NFS_LOCK_RECLAIM 1
106#define NFS_LOCK_EXPIRED 2
107
Trond Myklebust4ce79712005-06-22 17:16:21 +0000108/*
109 * struct nfs4_state maintains the client-side state for a given
110 * (state_owner,inode) tuple (OPEN) or state_owner (LOCK).
111 *
112 * OPEN:
113 * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server,
114 * we need to know how many files are open for reading or writing on a
115 * given inode. This information too is stored here.
116 *
117 * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN)
118 */
119
Trond Myklebust77041ed2010-07-01 12:49:11 -0400120struct nfs4_lock_owner {
121 unsigned int lo_type;
122#define NFS4_ANY_LOCK_TYPE (0U)
123#define NFS4_FLOCK_LOCK_TYPE (1U << 0)
124#define NFS4_POSIX_LOCK_TYPE (1U << 1)
125 union {
126 fl_owner_t posix_owner;
127 pid_t flock_owner;
128 } lo_u;
129};
130
Trond Myklebust4ce79712005-06-22 17:16:21 +0000131struct nfs4_lock_state {
132 struct list_head ls_locks; /* Other lock stateids */
Trond Myklebust8d0a8a92005-06-22 17:16:32 +0000133 struct nfs4_state * ls_state; /* Pointer to open state */
Trond Myklebust795a88c2012-09-10 13:26:49 -0400134#define NFS_LOCK_INITIALIZED 0
135 unsigned long ls_flags;
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700136 struct nfs_seqid_counter ls_seqid;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000137 nfs4_stateid ls_stateid;
138 atomic_t ls_count;
Trond Myklebust77041ed2010-07-01 12:49:11 -0400139 struct nfs4_lock_owner ls_owner;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000140};
141
142/* bits for nfs4_state->flags */
143enum {
144 LK_STATE_IN_USE,
Trond Myklebust003707c2007-07-05 18:07:55 -0400145 NFS_DELEGATED_STATE, /* Current stateid is delegation */
146 NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */
147 NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */
148 NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */
Trond Myklebustb79a4a12008-12-23 15:21:41 -0500149 NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */
150 NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */
Trond Myklebust8e469eb2010-01-26 15:42:30 -0500151 NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000152};
153
154struct nfs4_state {
155 struct list_head open_states; /* List of states for the same state_owner */
156 struct list_head inode_states; /* List of states for the same inode */
157 struct list_head lock_states; /* List of subservient lock stateids */
158
159 struct nfs4_state_owner *owner; /* Pointer to the open owner */
160 struct inode *inode; /* Pointer to the inode */
161
162 unsigned long flags; /* Do we hold any locks? */
Trond Myklebust8d0a8a92005-06-22 17:16:32 +0000163 spinlock_t state_lock; /* Protects the lock_states list */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000164
Trond Myklebust8bda4e42007-07-09 10:45:42 -0400165 seqlock_t seqlock; /* Protects the stateid/open_stateid */
Trond Myklebust003707c2007-07-05 18:07:55 -0400166 nfs4_stateid stateid; /* Current stateid: may be delegation */
167 nfs4_stateid open_stateid; /* OPEN stateid */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000168
Trond Myklebust8bda4e42007-07-09 10:45:42 -0400169 /* The following 3 fields are protected by owner->so_lock */
Trond Myklebust003707c2007-07-05 18:07:55 -0400170 unsigned int n_rdonly; /* Number of read-only references */
171 unsigned int n_wronly; /* Number of write-only references */
172 unsigned int n_rdwr; /* Number of read/write references */
Trond Myklebustdc0b0272008-12-23 15:21:56 -0500173 fmode_t state; /* State on the server (R,W, or RW) */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000174 atomic_t count;
175};
176
177
178struct nfs4_exception {
179 long timeout;
180 int retry;
Trond Myklebust9e33bed2008-12-23 15:21:46 -0500181 struct nfs4_state *state;
Trond Myklebust3114ea72012-03-07 16:39:06 -0500182 struct inode *inode;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000183};
184
185struct nfs4_state_recovery_ops {
Trond Myklebust7eff03a2008-12-23 15:21:43 -0500186 int owner_flag_bit;
Trond Myklebustb79a4a12008-12-23 15:21:41 -0500187 int state_flag_bit;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000188 int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *);
189 int (*recover_lock)(struct nfs4_state *, struct file_lock *);
Andy Adamson591d71c2009-04-01 09:22:47 -0400190 int (*establish_clid)(struct nfs_client *, struct rpc_cred *);
Andy Adamson90a16612009-04-01 09:22:48 -0400191 struct rpc_cred * (*get_clid_cred)(struct nfs_client *);
Ricardo Labiagafce5c832009-12-05 16:08:41 -0500192 int (*reclaim_complete)(struct nfs_client *);
Chuck Lever05f4c352012-09-14 17:24:32 -0400193 int (*detect_trunking)(struct nfs_client *, struct nfs_client **,
194 struct rpc_cred *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000195};
196
Benny Halevy29fba382009-04-01 09:22:44 -0400197struct nfs4_state_maintenance_ops {
Trond Myklebust2f60ea62011-08-24 15:07:37 -0400198 int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned);
Andy Adamsona7b72102009-04-01 09:22:46 -0400199 struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *);
Benny Halevy8e69514f2009-04-01 09:22:45 -0400200 int (*renew_lease)(struct nfs_client *, struct rpc_cred *);
Benny Halevy29fba382009-04-01 09:22:44 -0400201};
202
Al Virof786aa92009-02-20 05:51:22 +0000203extern const struct dentry_operations nfs4_dentry_operations;
Bryan Schumaker73a79702012-07-16 16:39:12 -0400204
205/* dir.c */
206int nfs_atomic_open(struct inode *, struct dentry *, struct file *,
207 unsigned, umode_t, int *);
J. Bruce Fields6b3b5492005-06-22 17:16:22 +0000208
bjschuma@gmail.com1ae811e2012-08-08 13:57:06 -0400209/* super.c */
210extern struct file_system_type nfs4_fs_type;
211
Bryan Schumaker72de53e2012-04-27 13:27:40 -0400212/* nfs4namespace.c */
Bryan Schumaker2671bfc2012-04-27 13:27:44 -0400213rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *);
Bryan Schumaker72de53e2012-04-27 13:27:40 -0400214struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *);
Bryan Schumaker281cad42012-04-27 13:27:45 -0400215struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *,
216 struct nfs_fh *, struct nfs_fattr *);
Bryan Schumaker72de53e2012-04-27 13:27:40 -0400217
Trond Myklebust4ce79712005-06-22 17:16:21 +0000218/* nfs4proc.c */
Trond Myklebustbb8b27e2010-04-16 16:43:06 -0400219extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *);
220extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *);
Bryan Schumaker3028eb22012-05-10 15:07:30 -0400221extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
Trond Myklebust2cf047c2012-05-25 17:57:41 -0400222extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred);
Andy Adamson4d643d12009-12-04 15:52:24 -0500223extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred);
Trond Myklebust66245532012-05-25 17:18:09 -0400224extern int nfs4_destroy_clientid(struct nfs_client *clp);
Andy Adamson591d71c2009-04-01 09:22:47 -0400225extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
Andy Adamson4d643d12009-12-04 15:52:24 -0500226extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
Trond Myklebust1f7977c2012-09-20 20:31:51 -0400227extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait);
Trond Myklebust55a97592006-06-09 09:34:19 -0400228extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle);
Bryan Schumakerf05d1472012-04-27 13:27:41 -0400229extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *,
230 struct nfs4_fs_locations *, struct page *);
231extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, struct qstr *,
232 struct nfs_fh *, struct nfs_fattr *);
Bryan Schumaker72de53e2012-04-27 13:27:40 -0400233extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
Trond Myklebustcf470c32012-03-07 13:49:12 -0500234extern int nfs4_release_lockowner(struct nfs4_lock_state *);
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +0000235extern const struct xattr_handler *nfs4_xattr_handlers[];
Trond Myklebust4ce79712005-06-22 17:16:21 +0000236
Andy Adamson557134a2009-04-01 09:21:53 -0400237#if defined(CONFIG_NFS_V4_1)
Trond Myklebust035168a2010-06-16 09:52:26 -0400238static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server)
239{
240 return server->nfs_client->cl_session;
241}
242
243extern int nfs4_setup_sequence(const struct nfs_server *server,
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400244 struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
Trond Myklebust9d12b212012-01-17 22:04:25 -0500245 struct rpc_task *task);
Andy Adamsondc70d7b2011-03-01 01:34:19 +0000246extern int nfs41_setup_sequence(struct nfs4_session *session,
247 struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
Trond Myklebust9d12b212012-01-17 22:04:25 -0500248 struct rpc_task *task);
Trond Myklebust848f5bd2012-05-25 17:51:23 -0400249extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *);
250extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *);
Ricardo Labiaga9430fb62009-12-06 12:23:46 -0500251extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
252 struct nfs_fsinfo *fsinfo);
Andy Adamson863a3c62011-03-23 13:27:54 +0000253extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data,
Andy Adamsonef311532011-03-12 02:58:10 -0500254 bool sync);
Andy Adamson94de8b22011-03-01 01:34:12 +0000255
256static inline bool
257is_ds_only_client(struct nfs_client *clp)
258{
259 return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) ==
260 EXCHGID4_FLAG_USE_PNFS_DS;
261}
Andy Adamsond83217c2011-03-01 01:34:17 +0000262
263static inline bool
264is_ds_client(struct nfs_client *clp)
265{
266 return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS;
267}
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,
Trond Myklebust9d12b212012-01-17 22:04:25 -0500276 struct rpc_task *task)
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400277{
Trond Myklebustd9afbd12012-10-22 20:28:44 -0400278 rpc_call_start(task);
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400279 return 0;
280}
Trond Myklebustfccba802009-07-21 16:48:07 -0400281
Andy Adamson94de8b22011-03-01 01:34:12 +0000282static inline bool
283is_ds_only_client(struct nfs_client *clp)
284{
285 return false;
286}
Andy Adamsond83217c2011-03-01 01:34:17 +0000287
288static inline bool
289is_ds_client(struct nfs_client *clp)
290{
291 return false;
292}
Andy Adamson557134a2009-04-01 09:21:53 -0400293#endif /* CONFIG_NFS_V4_1 */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000294
Trond Myklebust97dc1352010-06-16 09:52:26 -0400295extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[];
Benny Halevy29fba382009-04-01 09:22:44 -0400296
Trond Myklebust1549210f2012-06-05 09:16:47 -0400297extern const u32 nfs4_fattr_bitmap[3];
Trond Myklebust4ce79712005-06-22 17:16:21 +0000298extern const u32 nfs4_statfs_bitmap[2];
299extern const u32 nfs4_pathconf_bitmap[2];
Fred Isamandae100c2011-07-30 20:52:37 -0400300extern const u32 nfs4_fsinfo_bitmap[3];
Manoj Naik830b8e32006-06-09 09:34:25 -0400301extern const u32 nfs4_fs_locations_bitmap[2];
Trond Myklebust4ce79712005-06-22 17:16:21 +0000302
Bryan Schumakercdb7ece2012-06-20 15:53:45 -0400303void nfs4_free_client(struct nfs_client *);
304
Bryan Schumaker6663ee72012-06-20 15:53:46 -0400305struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *);
306
Trond Myklebust4ce79712005-06-22 17:16:21 +0000307/* nfs4renewd.c */
David Howellsadfa6f92006-08-22 20:06:08 -0400308extern void nfs4_schedule_state_renewal(struct nfs_client *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000309extern void nfs4_renewd_prepare_shutdown(struct nfs_server *);
David Howellsadfa6f92006-08-22 20:06:08 -0400310extern void nfs4_kill_renewd(struct nfs_client *);
David Howells65f27f32006-11-22 14:55:48 +0000311extern void nfs4_renew_state(struct work_struct *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000312
313/* nfs4state.c */
Andy Adamsona7b72102009-04-01 09:22:46 -0400314struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp);
Trond Myklebustfe20d7d2012-11-21 22:49:36 -0500315struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp);
Trond Myklebust6dc9d572008-12-23 15:21:41 -0500316struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp);
Chuck Lever05f4c352012-09-14 17:24:32 -0400317int nfs4_discover_server_trunking(struct nfs_client *clp,
318 struct nfs_client **);
319int nfs40_discover_server_trunking(struct nfs_client *clp,
320 struct nfs_client **, struct rpc_cred *);
Andy Adamsona7b72102009-04-01 09:22:46 -0400321#if defined(CONFIG_NFS_V4_1)
Andy Adamsonb4b82602009-04-01 09:22:49 -0400322struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp);
Chuck Lever05f4c352012-09-14 17:24:32 -0400323int nfs41_discover_server_trunking(struct nfs_client *clp,
324 struct nfs_client **, struct rpc_cred *);
Trond Myklebust9f594792012-05-27 13:02:53 -0400325extern void nfs4_schedule_session_recovery(struct nfs4_session *, int);
Trond Myklebustac074832012-11-21 09:06:11 -0500326extern void nfs41_server_notify_target_slotid_update(struct nfs_client *clp);
Trond Myklebustc10e4492012-11-26 16:16:54 -0500327extern void nfs41_server_notify_highest_slotid_update(struct nfs_client *clp);
Trond Myklebust5d633602012-11-23 13:09:38 -0500328
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500329#else
Trond Myklebust9f594792012-05-27 13:02:53 -0400330static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err)
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500331{
332}
Andy Adamsona7b72102009-04-01 09:22:46 -0400333#endif /* CONFIG_NFS_V4_1 */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000334
Trond Myklebustd1e284d2012-01-17 22:04:24 -0500335extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000336extern void nfs4_put_state_owner(struct nfs4_state_owner *);
Chuck Lever0aaaf5c2011-12-06 16:13:48 -0500337extern void nfs4_purge_state_owners(struct nfs_server *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000338extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
339extern void nfs4_put_open_state(struct nfs4_state *);
Al Viro643168c2011-06-22 18:20:23 -0400340extern void nfs4_close_state(struct nfs4_state *, fmode_t);
341extern void nfs4_close_sync(struct nfs4_state *, fmode_t);
Trond Myklebustdc0b0272008-12-23 15:21:56 -0500342extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t);
Trond Myklebusta1d0b5e2012-03-05 19:56:44 -0500343extern void nfs_inode_find_state_and_recover(struct inode *inode,
344 const nfs4_stateid *stateid);
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500345extern void nfs4_schedule_lease_recovery(struct nfs_client *);
Trond Myklebust33021272012-11-26 13:13:29 -0500346extern int nfs4_wait_clnt_recover(struct nfs_client *clp);
347extern int nfs4_client_recover_expired_lease(struct nfs_client *clp);
Trond Myklebustb0d3ded2008-12-23 15:21:50 -0500348extern void nfs4_schedule_state_manager(struct nfs_client *);
Trond Myklebust042b60b2011-08-24 15:07:37 -0400349extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp);
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500350extern void nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *);
Alexandros Batsakis0629e372009-12-05 13:46:14 -0500351extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -0400352extern void nfs41_handle_server_scope(struct nfs_client *,
Chuck Lever79d4e1f2012-05-21 22:44:31 -0400353 struct nfs41_server_scope **);
Trond Myklebustfaf5f492005-10-18 14:20:15 -0700354extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
Trond Myklebust8d0a8a92005-06-22 17:16:32 +0000355extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl);
Trond Myklebust4fc87962012-03-08 17:42:01 -0500356extern void nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *,
Trond Myklebust2a369152012-08-13 18:54:45 -0400357 fmode_t, const struct nfs_lockowner *);
Trond Myklebust4ce79712005-06-22 17:16:21 +0000358
Trond Myklebust8535b2b2010-05-13 12:51:01 -0400359extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask);
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700360extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task);
361extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid);
362extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid);
Trond Myklebust72211db2009-12-15 14:47:36 -0500363extern void nfs_release_seqid(struct nfs_seqid *seqid);
Trond Myklebustcee54fc2005-10-18 14:20:12 -0700364extern void nfs_free_seqid(struct nfs_seqid *seqid);
365
Trond Myklebust5ae67c42012-03-19 16:17:18 -0400366extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp);
Trond Myklebustcf470c32012-03-07 13:49:12 -0500367
Trond Myklebust4ce79712005-06-22 17:16:21 +0000368extern const nfs4_stateid zero_stateid;
369
Bryan Schumaker129d1972012-07-16 16:39:13 -0400370/* nfs4super.c */
Bryan Schumakerfbdefd62012-07-16 16:39:20 -0400371struct nfs_mount_info;
Bryan Schumakerab7017a2012-07-30 16:05:16 -0400372extern struct nfs_subversion nfs_v4;
Bryan Schumakerff9099f22012-07-30 16:05:18 -0400373struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *);
Bryan Schumakerfac1e8e2012-07-30 16:05:22 -0400374extern bool nfs4_disable_idmapping;
375extern unsigned short max_session_slots;
376extern unsigned short send_implementation_id;
Bryan Schumaker89d77c82012-07-30 16:05:25 -0400377
Chuck Lever6f2ea7f2012-09-14 17:24:41 -0400378#define NFS4_CLIENT_ID_UNIQ_LEN (64)
379extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN];
380
Bryan Schumaker466bfe72012-07-16 16:39:14 -0400381/* nfs4sysctl.c */
382#ifdef CONFIG_SYSCTL
383int nfs4_register_sysctl(void);
384void nfs4_unregister_sysctl(void);
385#else
386static inline int nfs4_register_sysctl(void)
387{
388 return 0;
389}
390
Randy Dunlap0add3e82012-07-27 11:49:26 -0700391static inline void nfs4_unregister_sysctl(void)
Bryan Schumaker466bfe72012-07-16 16:39:14 -0400392{
393}
394#endif
395
Trond Myklebust4ce79712005-06-22 17:16:21 +0000396/* nfs4xdr.c */
Trond Myklebust4ce79712005-06-22 17:16:21 +0000397extern struct rpc_procinfo nfs4_procedures[];
398
399struct nfs4_mount_data;
400
401/* callback_xdr.c */
402extern struct svc_version nfs4_callback_version1;
Alexandros Batsakis07bccc22009-12-05 13:19:01 -0500403extern struct svc_version nfs4_callback_version4;
Trond Myklebust4ce79712005-06-22 17:16:21 +0000404
Trond Myklebustf597c532012-03-04 18:13:56 -0500405static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src)
406{
Trond Myklebust2d2f24a2012-03-04 18:13:57 -0500407 memcpy(dst, src, sizeof(*dst));
Trond Myklebustf597c532012-03-04 18:13:56 -0500408}
409
410static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src)
411{
Trond Myklebust2d2f24a2012-03-04 18:13:57 -0500412 return memcmp(dst, src, sizeof(*dst)) == 0;
Trond Myklebustf597c532012-03-04 18:13:56 -0500413}
414
Trond Myklebust4ce79712005-06-22 17:16:21 +0000415#else
416
Al Viro643168c2011-06-22 18:20:23 -0400417#define nfs4_close_state(a, b) do { } while (0)
418#define nfs4_close_sync(a, b) do { } while (0)
Trond Myklebust4ce79712005-06-22 17:16:21 +0000419
420#endif /* CONFIG_NFS_V4 */
421#endif /* __LINUX_FS_NFS_NFS4_FS.H */