Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 1 | /* |
| 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 | |
| 14 | struct 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 | |
| 40 | enum nfs4_client_state { |
Trond Myklebust | e005e80 | 2008-12-23 15:21:48 -0500 | [diff] [blame] | 41 | NFS4CLNT_MANAGER_RUNNING = 0, |
Trond Myklebust | e598d84 | 2008-12-23 15:21:42 -0500 | [diff] [blame] | 42 | NFS4CLNT_CHECK_LEASE, |
Trond Myklebust | 58d9714a | 2006-01-03 09:55:24 +0100 | [diff] [blame] | 43 | NFS4CLNT_LEASE_EXPIRED, |
Trond Myklebust | b79a4a1 | 2008-12-23 15:21:41 -0500 | [diff] [blame] | 44 | NFS4CLNT_RECLAIM_REBOOT, |
| 45 | NFS4CLNT_RECLAIM_NOGRACE, |
Trond Myklebust | 707fb4b | 2008-12-23 15:21:47 -0500 | [diff] [blame] | 46 | NFS4CLNT_DELEGRETURN, |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 47 | NFS4CLNT_LAYOUTRECALL, |
Andy Adamson | 6df0818 | 2009-12-04 15:55:05 -0500 | [diff] [blame] | 48 | NFS4CLNT_SESSION_RESET, |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 49 | NFS4CLNT_RECALL_SLOT, |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 50 | }; |
| 51 | |
Trond Myklebust | a2118c3 | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 52 | enum nfs4_session_state { |
Trond Myklebust | 1055d76 | 2010-06-16 09:52:27 -0400 | [diff] [blame] | 53 | NFS4_SESSION_INITING, |
Trond Myklebust | a2118c3 | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 54 | NFS4_SESSION_DRAINING, |
| 55 | }; |
| 56 | |
Trond Myklebust | 97dc135 | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 57 | struct nfs4_minor_version_ops { |
| 58 | u32 minor_version; |
| 59 | |
| 60 | int (*call_sync)(struct nfs_server *server, |
| 61 | struct rpc_message *msg, |
| 62 | struct nfs4_sequence_args *args, |
| 63 | struct nfs4_sequence_res *res, |
| 64 | int cache_reply); |
Trond Myklebust | e047a10 | 2010-06-16 09:52:27 -0400 | [diff] [blame] | 65 | int (*validate_stateid)(struct nfs_delegation *, |
| 66 | const nfs4_stateid *); |
Trond Myklebust | c48f4f3 | 2010-06-16 09:52:27 -0400 | [diff] [blame] | 67 | const struct nfs4_state_recovery_ops *reboot_recovery_ops; |
| 68 | const struct nfs4_state_recovery_ops *nograce_recovery_ops; |
| 69 | const struct nfs4_state_maintenance_ops *state_renewal_ops; |
Trond Myklebust | 97dc135 | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 70 | }; |
| 71 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 72 | /* |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 73 | * struct rpc_sequence ensures that RPC calls are sent in the exact |
| 74 | * order that they appear on the list. |
| 75 | */ |
| 76 | struct rpc_sequence { |
| 77 | struct rpc_wait_queue wait; /* RPC call delay queue */ |
| 78 | spinlock_t lock; /* Protects the list */ |
| 79 | struct list_head list; /* Defines sequence of RPC calls */ |
| 80 | }; |
| 81 | |
| 82 | #define NFS_SEQID_CONFIRMED 1 |
| 83 | struct nfs_seqid_counter { |
| 84 | struct rpc_sequence *sequence; |
| 85 | int flags; |
| 86 | u32 counter; |
| 87 | }; |
| 88 | |
| 89 | struct nfs_seqid { |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 90 | struct nfs_seqid_counter *sequence; |
Trond Myklebust | 4e51336 | 2005-10-20 14:22:41 -0700 | [diff] [blame] | 91 | struct list_head list; |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 92 | }; |
| 93 | |
| 94 | static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) |
| 95 | { |
| 96 | if (seqid_mutating_err(-status)) |
| 97 | seqid->flags |= NFS_SEQID_CONFIRMED; |
| 98 | } |
| 99 | |
Trond Myklebust | 9f958ab | 2007-07-02 13:58:33 -0400 | [diff] [blame] | 100 | struct nfs_unique_id { |
| 101 | struct rb_node rb_node; |
| 102 | __u64 id; |
| 103 | }; |
| 104 | |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 105 | /* |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 106 | * NFS4 state_owners and lock_owners are simply labels for ordered |
| 107 | * sequences of RPC calls. Their sole purpose is to provide once-only |
| 108 | * semantics by allowing the server to identify replayed requests. |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 109 | */ |
| 110 | struct nfs4_state_owner { |
Trond Myklebust | 9f958ab | 2007-07-02 13:58:33 -0400 | [diff] [blame] | 111 | struct nfs_unique_id so_owner_id; |
Trond Myklebust | 6f2e64d | 2007-07-06 10:53:21 -0400 | [diff] [blame] | 112 | struct nfs_server *so_server; |
Chuck Lever | 24d292b | 2010-12-24 01:32:43 +0000 | [diff] [blame] | 113 | struct rb_node so_server_node; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 114 | |
| 115 | struct rpc_cred *so_cred; /* Associated cred */ |
Trond Myklebust | 9f958ab | 2007-07-02 13:58:33 -0400 | [diff] [blame] | 116 | |
| 117 | spinlock_t so_lock; |
| 118 | atomic_t so_count; |
Trond Myklebust | 7eff03a | 2008-12-23 15:21:43 -0500 | [diff] [blame] | 119 | unsigned long so_flags; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 120 | struct list_head so_states; |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 121 | struct nfs_seqid_counter so_seqid; |
| 122 | struct rpc_sequence so_sequence; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 123 | }; |
| 124 | |
Trond Myklebust | 7eff03a | 2008-12-23 15:21:43 -0500 | [diff] [blame] | 125 | enum { |
| 126 | NFS_OWNER_RECLAIM_REBOOT, |
| 127 | NFS_OWNER_RECLAIM_NOGRACE |
| 128 | }; |
| 129 | |
Alexandros Batsakis | afe6c27 | 2009-12-09 01:50:14 -0800 | [diff] [blame] | 130 | #define NFS_LOCK_NEW 0 |
| 131 | #define NFS_LOCK_RECLAIM 1 |
| 132 | #define NFS_LOCK_EXPIRED 2 |
| 133 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 134 | /* |
| 135 | * struct nfs4_state maintains the client-side state for a given |
| 136 | * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). |
| 137 | * |
| 138 | * OPEN: |
| 139 | * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, |
| 140 | * we need to know how many files are open for reading or writing on a |
| 141 | * given inode. This information too is stored here. |
| 142 | * |
| 143 | * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) |
| 144 | */ |
| 145 | |
Trond Myklebust | 77041ed | 2010-07-01 12:49:11 -0400 | [diff] [blame] | 146 | struct nfs4_lock_owner { |
| 147 | unsigned int lo_type; |
| 148 | #define NFS4_ANY_LOCK_TYPE (0U) |
| 149 | #define NFS4_FLOCK_LOCK_TYPE (1U << 0) |
| 150 | #define NFS4_POSIX_LOCK_TYPE (1U << 1) |
| 151 | union { |
| 152 | fl_owner_t posix_owner; |
| 153 | pid_t flock_owner; |
| 154 | } lo_u; |
| 155 | }; |
| 156 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 157 | struct nfs4_lock_state { |
| 158 | struct list_head ls_locks; /* Other lock stateids */ |
Trond Myklebust | 8d0a8a9 | 2005-06-22 17:16:32 +0000 | [diff] [blame] | 159 | struct nfs4_state * ls_state; /* Pointer to open state */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 160 | #define NFS_LOCK_INITIALIZED 1 |
| 161 | int ls_flags; |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 162 | struct nfs_seqid_counter ls_seqid; |
Trond Myklebust | d0dc370 | 2008-01-10 16:07:54 -0500 | [diff] [blame] | 163 | struct rpc_sequence ls_sequence; |
Trond Myklebust | 9f958ab | 2007-07-02 13:58:33 -0400 | [diff] [blame] | 164 | struct nfs_unique_id ls_id; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 165 | nfs4_stateid ls_stateid; |
| 166 | atomic_t ls_count; |
Trond Myklebust | 77041ed | 2010-07-01 12:49:11 -0400 | [diff] [blame] | 167 | struct nfs4_lock_owner ls_owner; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 168 | }; |
| 169 | |
| 170 | /* bits for nfs4_state->flags */ |
| 171 | enum { |
| 172 | LK_STATE_IN_USE, |
Trond Myklebust | 003707c | 2007-07-05 18:07:55 -0400 | [diff] [blame] | 173 | NFS_DELEGATED_STATE, /* Current stateid is delegation */ |
| 174 | NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ |
| 175 | NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ |
| 176 | NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ |
Trond Myklebust | b79a4a1 | 2008-12-23 15:21:41 -0500 | [diff] [blame] | 177 | NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ |
| 178 | NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ |
Trond Myklebust | 8e469eb | 2010-01-26 15:42:30 -0500 | [diff] [blame] | 179 | NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 180 | }; |
| 181 | |
| 182 | struct nfs4_state { |
| 183 | struct list_head open_states; /* List of states for the same state_owner */ |
| 184 | struct list_head inode_states; /* List of states for the same inode */ |
| 185 | struct list_head lock_states; /* List of subservient lock stateids */ |
| 186 | |
| 187 | struct nfs4_state_owner *owner; /* Pointer to the open owner */ |
| 188 | struct inode *inode; /* Pointer to the inode */ |
| 189 | |
| 190 | unsigned long flags; /* Do we hold any locks? */ |
Trond Myklebust | 8d0a8a9 | 2005-06-22 17:16:32 +0000 | [diff] [blame] | 191 | spinlock_t state_lock; /* Protects the lock_states list */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 192 | |
Trond Myklebust | 8bda4e4 | 2007-07-09 10:45:42 -0400 | [diff] [blame] | 193 | seqlock_t seqlock; /* Protects the stateid/open_stateid */ |
Trond Myklebust | 003707c | 2007-07-05 18:07:55 -0400 | [diff] [blame] | 194 | nfs4_stateid stateid; /* Current stateid: may be delegation */ |
| 195 | nfs4_stateid open_stateid; /* OPEN stateid */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 196 | |
Trond Myklebust | 8bda4e4 | 2007-07-09 10:45:42 -0400 | [diff] [blame] | 197 | /* The following 3 fields are protected by owner->so_lock */ |
Trond Myklebust | 003707c | 2007-07-05 18:07:55 -0400 | [diff] [blame] | 198 | unsigned int n_rdonly; /* Number of read-only references */ |
| 199 | unsigned int n_wronly; /* Number of write-only references */ |
| 200 | unsigned int n_rdwr; /* Number of read/write references */ |
Trond Myklebust | dc0b027 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 201 | fmode_t state; /* State on the server (R,W, or RW) */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 202 | atomic_t count; |
| 203 | }; |
| 204 | |
| 205 | |
| 206 | struct nfs4_exception { |
| 207 | long timeout; |
| 208 | int retry; |
Trond Myklebust | 9e33bed | 2008-12-23 15:21:46 -0500 | [diff] [blame] | 209 | struct nfs4_state *state; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 210 | }; |
| 211 | |
| 212 | struct nfs4_state_recovery_ops { |
Trond Myklebust | 7eff03a | 2008-12-23 15:21:43 -0500 | [diff] [blame] | 213 | int owner_flag_bit; |
Trond Myklebust | b79a4a1 | 2008-12-23 15:21:41 -0500 | [diff] [blame] | 214 | int state_flag_bit; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 215 | int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); |
| 216 | int (*recover_lock)(struct nfs4_state *, struct file_lock *); |
Andy Adamson | 591d71c | 2009-04-01 09:22:47 -0400 | [diff] [blame] | 217 | int (*establish_clid)(struct nfs_client *, struct rpc_cred *); |
Andy Adamson | 90a1661 | 2009-04-01 09:22:48 -0400 | [diff] [blame] | 218 | struct rpc_cred * (*get_clid_cred)(struct nfs_client *); |
Ricardo Labiaga | fce5c83 | 2009-12-05 16:08:41 -0500 | [diff] [blame] | 219 | int (*reclaim_complete)(struct nfs_client *); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 220 | }; |
| 221 | |
Benny Halevy | 29fba38 | 2009-04-01 09:22:44 -0400 | [diff] [blame] | 222 | struct nfs4_state_maintenance_ops { |
| 223 | int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *); |
Andy Adamson | a7b7210 | 2009-04-01 09:22:46 -0400 | [diff] [blame] | 224 | struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); |
Benny Halevy | 8e69514f | 2009-04-01 09:22:45 -0400 | [diff] [blame] | 225 | int (*renew_lease)(struct nfs_client *, struct rpc_cred *); |
Benny Halevy | 29fba38 | 2009-04-01 09:22:44 -0400 | [diff] [blame] | 226 | }; |
| 227 | |
Al Viro | f786aa9 | 2009-02-20 05:51:22 +0000 | [diff] [blame] | 228 | extern const struct dentry_operations nfs4_dentry_operations; |
Arjan van de Ven | 92e1d5b | 2007-02-12 00:55:39 -0800 | [diff] [blame] | 229 | extern const struct inode_operations nfs4_dir_inode_operations; |
J. Bruce Fields | 6b3b549 | 2005-06-22 17:16:22 +0000 | [diff] [blame] | 230 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 231 | /* nfs4proc.c */ |
Trond Myklebust | bb8b27e | 2010-04-16 16:43:06 -0400 | [diff] [blame] | 232 | extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); |
| 233 | extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); |
Andy Adamson | 4d643d1 | 2009-12-04 15:52:24 -0500 | [diff] [blame] | 234 | extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred); |
David Howells | adfa6f9 | 2006-08-22 20:06:08 -0400 | [diff] [blame] | 235 | extern int nfs4_proc_async_renew(struct nfs_client *, struct rpc_cred *); |
| 236 | extern int nfs4_proc_renew(struct nfs_client *, struct rpc_cred *); |
Andy Adamson | 591d71c | 2009-04-01 09:22:47 -0400 | [diff] [blame] | 237 | extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); |
Andy Adamson | 4d643d1 | 2009-12-04 15:52:24 -0500 | [diff] [blame] | 238 | extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 239 | extern int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc); |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 240 | extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); |
Trond Myklebust | 56659e9 | 2007-07-17 21:52:39 -0400 | [diff] [blame] | 241 | extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
Manoj Naik | 7aaa0b3 | 2006-06-09 09:34:23 -0400 | [diff] [blame] | 242 | struct nfs4_fs_locations *fs_locations, struct page *page); |
Trond Myklebust | d3c7b7c | 2010-07-01 12:49:01 -0400 | [diff] [blame] | 243 | extern void nfs4_release_lockowner(const struct nfs4_lock_state *); |
Aneesh Kumar K.V | 64c2ce8 | 2010-12-09 11:35:25 +0000 | [diff] [blame] | 244 | extern const struct xattr_handler *nfs4_xattr_handlers[]; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 245 | |
Andy Adamson | 557134a | 2009-04-01 09:21:53 -0400 | [diff] [blame] | 246 | #if defined(CONFIG_NFS_V4_1) |
Trond Myklebust | 035168a | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 247 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
| 248 | { |
| 249 | return server->nfs_client->cl_session; |
| 250 | } |
| 251 | |
| 252 | extern int nfs4_setup_sequence(const struct nfs_server *server, |
Andy Adamson | fbcd4ab | 2009-04-01 09:22:15 -0400 | [diff] [blame] | 253 | struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, |
| 254 | int cache_reply, struct rpc_task *task); |
Andy Adamson | 557134a | 2009-04-01 09:21:53 -0400 | [diff] [blame] | 255 | extern void nfs4_destroy_session(struct nfs4_session *session); |
| 256 | extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp); |
Trond Myklebust | f26468f | 2009-12-05 19:32:11 -0500 | [diff] [blame] | 257 | extern int nfs4_proc_create_session(struct nfs_client *); |
Andy Adamson | c3fad1b | 2009-04-01 09:22:39 -0400 | [diff] [blame] | 258 | extern int nfs4_proc_destroy_session(struct nfs4_session *); |
Trond Myklebust | fccba80 | 2009-07-21 16:48:07 -0400 | [diff] [blame] | 259 | extern int nfs4_init_session(struct nfs_server *server); |
Ricardo Labiaga | 9430fb6 | 2009-12-06 12:23:46 -0500 | [diff] [blame] | 260 | extern int nfs4_proc_get_lease_time(struct nfs_client *clp, |
| 261 | struct nfs_fsinfo *fsinfo); |
Andy Adamson | 94de8b2 | 2011-03-01 01:34:12 +0000 | [diff] [blame] | 262 | |
| 263 | static inline bool |
| 264 | is_ds_only_client(struct nfs_client *clp) |
| 265 | { |
| 266 | return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == |
| 267 | EXCHGID4_FLAG_USE_PNFS_DS; |
| 268 | } |
Andy Adamson | d83217c | 2011-03-01 01:34:17 +0000 | [diff] [blame^] | 269 | |
| 270 | static inline bool |
| 271 | is_ds_client(struct nfs_client *clp) |
| 272 | { |
| 273 | return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; |
| 274 | } |
Andy Adamson | fbcd4ab | 2009-04-01 09:22:15 -0400 | [diff] [blame] | 275 | #else /* CONFIG_NFS_v4_1 */ |
Trond Myklebust | 035168a | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 276 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
| 277 | { |
| 278 | return NULL; |
| 279 | } |
| 280 | |
| 281 | static inline int nfs4_setup_sequence(const struct nfs_server *server, |
Andy Adamson | fbcd4ab | 2009-04-01 09:22:15 -0400 | [diff] [blame] | 282 | struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, |
| 283 | int cache_reply, struct rpc_task *task) |
| 284 | { |
| 285 | return 0; |
| 286 | } |
Trond Myklebust | fccba80 | 2009-07-21 16:48:07 -0400 | [diff] [blame] | 287 | |
| 288 | static inline int nfs4_init_session(struct nfs_server *server) |
| 289 | { |
| 290 | return 0; |
| 291 | } |
Andy Adamson | 94de8b2 | 2011-03-01 01:34:12 +0000 | [diff] [blame] | 292 | |
| 293 | static inline bool |
| 294 | is_ds_only_client(struct nfs_client *clp) |
| 295 | { |
| 296 | return false; |
| 297 | } |
Andy Adamson | d83217c | 2011-03-01 01:34:17 +0000 | [diff] [blame^] | 298 | |
| 299 | static inline bool |
| 300 | is_ds_client(struct nfs_client *clp) |
| 301 | { |
| 302 | return false; |
| 303 | } |
Andy Adamson | 557134a | 2009-04-01 09:21:53 -0400 | [diff] [blame] | 304 | #endif /* CONFIG_NFS_V4_1 */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 305 | |
Trond Myklebust | 97dc135 | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 306 | extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |
Benny Halevy | 29fba38 | 2009-04-01 09:22:44 -0400 | [diff] [blame] | 307 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 308 | extern const u32 nfs4_fattr_bitmap[2]; |
| 309 | extern const u32 nfs4_statfs_bitmap[2]; |
| 310 | extern const u32 nfs4_pathconf_bitmap[2]; |
| 311 | extern const u32 nfs4_fsinfo_bitmap[2]; |
Manoj Naik | 830b8e3 | 2006-06-09 09:34:25 -0400 | [diff] [blame] | 312 | extern const u32 nfs4_fs_locations_bitmap[2]; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 313 | |
| 314 | /* nfs4renewd.c */ |
David Howells | adfa6f9 | 2006-08-22 20:06:08 -0400 | [diff] [blame] | 315 | extern void nfs4_schedule_state_renewal(struct nfs_client *); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 316 | extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); |
David Howells | adfa6f9 | 2006-08-22 20:06:08 -0400 | [diff] [blame] | 317 | extern void nfs4_kill_renewd(struct nfs_client *); |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 318 | extern void nfs4_renew_state(struct work_struct *); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 319 | |
| 320 | /* nfs4state.c */ |
Andy Adamson | a7b7210 | 2009-04-01 09:22:46 -0400 | [diff] [blame] | 321 | struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp); |
Trond Myklebust | 6dc9d57 | 2008-12-23 15:21:41 -0500 | [diff] [blame] | 322 | struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); |
Andy Adamson | a7b7210 | 2009-04-01 09:22:46 -0400 | [diff] [blame] | 323 | #if defined(CONFIG_NFS_V4_1) |
| 324 | struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); |
Andy Adamson | b4b8260 | 2009-04-01 09:22:49 -0400 | [diff] [blame] | 325 | struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp); |
Trond Myklebust | 0400a6b | 2011-03-09 16:00:53 -0500 | [diff] [blame] | 326 | extern void nfs4_schedule_session_recovery(struct nfs4_session *); |
| 327 | #else |
| 328 | static inline void nfs4_schedule_session_recovery(struct nfs4_session *session) |
| 329 | { |
| 330 | } |
Andy Adamson | a7b7210 | 2009-04-01 09:22:46 -0400 | [diff] [blame] | 331 | #endif /* CONFIG_NFS_V4_1 */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 332 | |
| 333 | extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *); |
| 334 | extern void nfs4_put_state_owner(struct nfs4_state_owner *); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 335 | extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); |
| 336 | extern void nfs4_put_open_state(struct nfs4_state *); |
Trond Myklebust | dc0b027 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 337 | extern void nfs4_close_state(struct path *, struct nfs4_state *, fmode_t); |
| 338 | extern void nfs4_close_sync(struct path *, struct nfs4_state *, fmode_t); |
| 339 | extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); |
Trond Myklebust | 0400a6b | 2011-03-09 16:00:53 -0500 | [diff] [blame] | 340 | extern void nfs4_schedule_lease_recovery(struct nfs_client *); |
Trond Myklebust | b0d3ded | 2008-12-23 15:21:50 -0500 | [diff] [blame] | 341 | extern void nfs4_schedule_state_manager(struct nfs_client *); |
Trond Myklebust | 0400a6b | 2011-03-09 16:00:53 -0500 | [diff] [blame] | 342 | extern void nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); |
Alexandros Batsakis | 0629e37 | 2009-12-05 13:46:14 -0500 | [diff] [blame] | 343 | extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags); |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 344 | extern void nfs41_handle_recall_slot(struct nfs_client *clp); |
Trond Myklebust | faf5f49 | 2005-10-18 14:20:15 -0700 | [diff] [blame] | 345 | extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); |
Trond Myklebust | 8d0a8a9 | 2005-06-22 17:16:32 +0000 | [diff] [blame] | 346 | extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); |
Trond Myklebust | 77041ed | 2010-07-01 12:49:11 -0400 | [diff] [blame] | 347 | extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t, pid_t); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 348 | |
Trond Myklebust | 8535b2b | 2010-05-13 12:51:01 -0400 | [diff] [blame] | 349 | extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 350 | extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); |
| 351 | extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); |
| 352 | extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); |
Trond Myklebust | 72211db | 2009-12-15 14:47:36 -0500 | [diff] [blame] | 353 | extern void nfs_release_seqid(struct nfs_seqid *seqid); |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 354 | extern void nfs_free_seqid(struct nfs_seqid *seqid); |
| 355 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 356 | extern const nfs4_stateid zero_stateid; |
| 357 | |
| 358 | /* nfs4xdr.c */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 359 | extern struct rpc_procinfo nfs4_procedures[]; |
| 360 | |
| 361 | struct nfs4_mount_data; |
| 362 | |
| 363 | /* callback_xdr.c */ |
| 364 | extern struct svc_version nfs4_callback_version1; |
Alexandros Batsakis | 07bccc2 | 2009-12-05 13:19:01 -0500 | [diff] [blame] | 365 | extern struct svc_version nfs4_callback_version4; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 366 | |
| 367 | #else |
| 368 | |
Trond Myklebust | 4a35bd4 | 2007-06-05 10:31:33 -0400 | [diff] [blame] | 369 | #define nfs4_close_state(a, b, c) do { } while (0) |
Olof Johansson | e9a4045 | 2007-10-19 20:41:49 -0500 | [diff] [blame] | 370 | #define nfs4_close_sync(a, b, c) do { } while (0) |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 371 | |
| 372 | #endif /* CONFIG_NFS_V4 */ |
| 373 | #endif /* __LINUX_FS_NFS_NFS4_FS.H */ |