14ce79717STrond Myklebust /* 24ce79717STrond Myklebust * linux/fs/nfs/nfs4_fs.h 34ce79717STrond Myklebust * 44ce79717STrond Myklebust * Copyright (C) 2005 Trond Myklebust 54ce79717STrond Myklebust * 64ce79717STrond Myklebust * NFSv4-specific filesystem definitions and declarations 74ce79717STrond Myklebust */ 84ce79717STrond Myklebust 94ce79717STrond Myklebust #ifndef __LINUX_FS_NFS_NFS4_FS_H 104ce79717STrond Myklebust #define __LINUX_FS_NFS_NFS4_FS_H 114ce79717STrond Myklebust 124ce79717STrond Myklebust #ifdef CONFIG_NFS_V4 134ce79717STrond Myklebust 144ce79717STrond Myklebust struct idmap; 154ce79717STrond Myklebust 164ce79717STrond Myklebust enum nfs4_client_state { 17e005e804STrond Myklebust NFS4CLNT_MANAGER_RUNNING = 0, 18e598d843STrond Myklebust NFS4CLNT_CHECK_LEASE, 1958d9714aSTrond Myklebust NFS4CLNT_LEASE_EXPIRED, 20b79a4a1bSTrond Myklebust NFS4CLNT_RECLAIM_REBOOT, 21b79a4a1bSTrond Myklebust NFS4CLNT_RECLAIM_NOGRACE, 22707fb4b3STrond Myklebust NFS4CLNT_DELEGRETURN, 2343f1b3daSFred Isaman NFS4CLNT_LAYOUTRECALL, 246df08189SAndy Adamson NFS4CLNT_SESSION_RESET, 25b9efa1b2SAndy Adamson NFS4CLNT_RECALL_SLOT, 26fd954ae1STrond Myklebust NFS4CLNT_LEASE_CONFIRM, 2778fe0f41SWeston Andros Adamson NFS4CLNT_SERVER_SCOPE_MISMATCH, 284ce79717STrond Myklebust }; 294ce79717STrond Myklebust 30a2118c33STrond Myklebust enum nfs4_session_state { 311055d76dSTrond Myklebust NFS4_SESSION_INITING, 32a2118c33STrond Myklebust NFS4_SESSION_DRAINING, 33a2118c33STrond Myklebust }; 34a2118c33STrond Myklebust 352f60ea6bSTrond Myklebust #define NFS4_RENEW_TIMEOUT 0x01 362f60ea6bSTrond Myklebust #define NFS4_RENEW_DELEGATION_CB 0x02 372f60ea6bSTrond Myklebust 3897dc1359STrond Myklebust struct nfs4_minor_version_ops { 3997dc1359STrond Myklebust u32 minor_version; 4097dc1359STrond Myklebust 417c513058SBryan Schumaker int (*call_sync)(struct rpc_clnt *clnt, 427c513058SBryan Schumaker struct nfs_server *server, 4397dc1359STrond Myklebust struct rpc_message *msg, 4497dc1359STrond Myklebust struct nfs4_sequence_args *args, 4597dc1359STrond Myklebust struct nfs4_sequence_res *res, 4697dc1359STrond Myklebust int cache_reply); 47e047a10cSTrond Myklebust int (*validate_stateid)(struct nfs_delegation *, 48e047a10cSTrond Myklebust const nfs4_stateid *); 49fca78d6dSBryan Schumaker int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, 50fca78d6dSBryan Schumaker struct nfs_fsinfo *); 51c48f4f35STrond Myklebust const struct nfs4_state_recovery_ops *reboot_recovery_ops; 52c48f4f35STrond Myklebust const struct nfs4_state_recovery_ops *nograce_recovery_ops; 53c48f4f35STrond Myklebust const struct nfs4_state_maintenance_ops *state_renewal_ops; 5497dc1359STrond Myklebust }; 5597dc1359STrond Myklebust 5648c22eb2STrond Myklebust struct nfs_unique_id { 5748c22eb2STrond Myklebust struct rb_node rb_node; 5848c22eb2STrond Myklebust __u64 id; 5948c22eb2STrond Myklebust }; 6048c22eb2STrond Myklebust 61cee54fc9STrond Myklebust #define NFS_SEQID_CONFIRMED 1 62cee54fc9STrond Myklebust struct nfs_seqid_counter { 6348c22eb2STrond Myklebust int owner_id; 64cee54fc9STrond Myklebust int flags; 65cee54fc9STrond Myklebust u32 counter; 667ba127abSTrond Myklebust spinlock_t lock; /* Protects the list */ 677ba127abSTrond Myklebust struct list_head list; /* Defines sequence of RPC calls */ 687ba127abSTrond Myklebust struct rpc_wait_queue wait; /* RPC call delay queue */ 69cee54fc9STrond Myklebust }; 70cee54fc9STrond Myklebust 71cee54fc9STrond Myklebust struct nfs_seqid { 72cee54fc9STrond Myklebust struct nfs_seqid_counter *sequence; 734e51336aSTrond Myklebust struct list_head list; 74cee54fc9STrond Myklebust }; 75cee54fc9STrond Myklebust 76cee54fc9STrond Myklebust static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) 77cee54fc9STrond Myklebust { 78cee54fc9STrond Myklebust if (seqid_mutating_err(-status)) 79cee54fc9STrond Myklebust seqid->flags |= NFS_SEQID_CONFIRMED; 80cee54fc9STrond Myklebust } 81cee54fc9STrond Myklebust 82cee54fc9STrond Myklebust /* 834ce79717STrond Myklebust * NFS4 state_owners and lock_owners are simply labels for ordered 844ce79717STrond Myklebust * sequences of RPC calls. Their sole purpose is to provide once-only 854ce79717STrond Myklebust * semantics by allowing the server to identify replayed requests. 864ce79717STrond Myklebust */ 874ce79717STrond Myklebust struct nfs4_state_owner { 886f2e64d3STrond Myklebust struct nfs_server *so_server; 890aaaf5c4SChuck Lever struct list_head so_lru; 900aaaf5c4SChuck Lever unsigned long so_expires; 9124d292b8SChuck Lever struct rb_node so_server_node; 924ce79717STrond Myklebust 934ce79717STrond Myklebust struct rpc_cred *so_cred; /* Associated cred */ 949f958ab8STrond Myklebust 959f958ab8STrond Myklebust spinlock_t so_lock; 969f958ab8STrond Myklebust atomic_t so_count; 977eff03aeSTrond Myklebust unsigned long so_flags; 984ce79717STrond Myklebust struct list_head so_states; 99cee54fc9STrond Myklebust struct nfs_seqid_counter so_seqid; 1004ce79717STrond Myklebust }; 1014ce79717STrond Myklebust 1027eff03aeSTrond Myklebust enum { 1037eff03aeSTrond Myklebust NFS_OWNER_RECLAIM_REBOOT, 1047eff03aeSTrond Myklebust NFS_OWNER_RECLAIM_NOGRACE 1057eff03aeSTrond Myklebust }; 1067eff03aeSTrond Myklebust 107afe6c27cSAlexandros Batsakis #define NFS_LOCK_NEW 0 108afe6c27cSAlexandros Batsakis #define NFS_LOCK_RECLAIM 1 109afe6c27cSAlexandros Batsakis #define NFS_LOCK_EXPIRED 2 110afe6c27cSAlexandros Batsakis 1114ce79717STrond Myklebust /* 1124ce79717STrond Myklebust * struct nfs4_state maintains the client-side state for a given 1134ce79717STrond Myklebust * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). 1144ce79717STrond Myklebust * 1154ce79717STrond Myklebust * OPEN: 1164ce79717STrond Myklebust * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, 1174ce79717STrond Myklebust * we need to know how many files are open for reading or writing on a 1184ce79717STrond Myklebust * given inode. This information too is stored here. 1194ce79717STrond Myklebust * 1204ce79717STrond Myklebust * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) 1214ce79717STrond Myklebust */ 1224ce79717STrond Myklebust 12377041ed9STrond Myklebust struct nfs4_lock_owner { 12477041ed9STrond Myklebust unsigned int lo_type; 12577041ed9STrond Myklebust #define NFS4_ANY_LOCK_TYPE (0U) 12677041ed9STrond Myklebust #define NFS4_FLOCK_LOCK_TYPE (1U << 0) 12777041ed9STrond Myklebust #define NFS4_POSIX_LOCK_TYPE (1U << 1) 12877041ed9STrond Myklebust union { 12977041ed9STrond Myklebust fl_owner_t posix_owner; 13077041ed9STrond Myklebust pid_t flock_owner; 13177041ed9STrond Myklebust } lo_u; 13277041ed9STrond Myklebust }; 13377041ed9STrond Myklebust 1344ce79717STrond Myklebust struct nfs4_lock_state { 1354ce79717STrond Myklebust struct list_head ls_locks; /* Other lock stateids */ 1368d0a8a9dSTrond Myklebust struct nfs4_state * ls_state; /* Pointer to open state */ 1374ce79717STrond Myklebust #define NFS_LOCK_INITIALIZED 1 1384ce79717STrond Myklebust int ls_flags; 139cee54fc9STrond Myklebust struct nfs_seqid_counter ls_seqid; 1404ce79717STrond Myklebust nfs4_stateid ls_stateid; 1414ce79717STrond Myklebust atomic_t ls_count; 14277041ed9STrond Myklebust struct nfs4_lock_owner ls_owner; 1434ce79717STrond Myklebust }; 1444ce79717STrond Myklebust 1454ce79717STrond Myklebust /* bits for nfs4_state->flags */ 1464ce79717STrond Myklebust enum { 1474ce79717STrond Myklebust LK_STATE_IN_USE, 148003707c7STrond Myklebust NFS_DELEGATED_STATE, /* Current stateid is delegation */ 149003707c7STrond Myklebust NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ 150003707c7STrond Myklebust NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ 151003707c7STrond Myklebust NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ 152b79a4a1bSTrond Myklebust NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ 153b79a4a1bSTrond Myklebust NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ 1548e469ebdSTrond Myklebust NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ 1554ce79717STrond Myklebust }; 1564ce79717STrond Myklebust 1574ce79717STrond Myklebust struct nfs4_state { 1584ce79717STrond Myklebust struct list_head open_states; /* List of states for the same state_owner */ 1594ce79717STrond Myklebust struct list_head inode_states; /* List of states for the same inode */ 1604ce79717STrond Myklebust struct list_head lock_states; /* List of subservient lock stateids */ 1614ce79717STrond Myklebust 1624ce79717STrond Myklebust struct nfs4_state_owner *owner; /* Pointer to the open owner */ 1634ce79717STrond Myklebust struct inode *inode; /* Pointer to the inode */ 1644ce79717STrond Myklebust 1654ce79717STrond Myklebust unsigned long flags; /* Do we hold any locks? */ 1668d0a8a9dSTrond Myklebust spinlock_t state_lock; /* Protects the lock_states list */ 1674ce79717STrond Myklebust 1688bda4e4cSTrond Myklebust seqlock_t seqlock; /* Protects the stateid/open_stateid */ 169003707c7STrond Myklebust nfs4_stateid stateid; /* Current stateid: may be delegation */ 170003707c7STrond Myklebust nfs4_stateid open_stateid; /* OPEN stateid */ 1714ce79717STrond Myklebust 1728bda4e4cSTrond Myklebust /* The following 3 fields are protected by owner->so_lock */ 173003707c7STrond Myklebust unsigned int n_rdonly; /* Number of read-only references */ 174003707c7STrond Myklebust unsigned int n_wronly; /* Number of write-only references */ 175003707c7STrond Myklebust unsigned int n_rdwr; /* Number of read/write references */ 176dc0b027dSTrond Myklebust fmode_t state; /* State on the server (R,W, or RW) */ 1774ce79717STrond Myklebust atomic_t count; 1784ce79717STrond Myklebust }; 1794ce79717STrond Myklebust 1804ce79717STrond Myklebust 1814ce79717STrond Myklebust struct nfs4_exception { 1824ce79717STrond Myklebust long timeout; 1834ce79717STrond Myklebust int retry; 1849e33bed5STrond Myklebust struct nfs4_state *state; 1854ce79717STrond Myklebust }; 1864ce79717STrond Myklebust 1874ce79717STrond Myklebust struct nfs4_state_recovery_ops { 1887eff03aeSTrond Myklebust int owner_flag_bit; 189b79a4a1bSTrond Myklebust int state_flag_bit; 1904ce79717STrond Myklebust int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); 1914ce79717STrond Myklebust int (*recover_lock)(struct nfs4_state *, struct file_lock *); 192591d71cbSAndy Adamson int (*establish_clid)(struct nfs_client *, struct rpc_cred *); 19390a16617SAndy Adamson struct rpc_cred * (*get_clid_cred)(struct nfs_client *); 194fce5c838SRicardo Labiaga int (*reclaim_complete)(struct nfs_client *); 1954ce79717STrond Myklebust }; 1964ce79717STrond Myklebust 19729fba38bSBenny Halevy struct nfs4_state_maintenance_ops { 1982f60ea6bSTrond Myklebust int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); 199a7b72103SAndy Adamson struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); 2008e69514fSBenny Halevy int (*renew_lease)(struct nfs_client *, struct rpc_cred *); 20129fba38bSBenny Halevy }; 20229fba38bSBenny Halevy 203f786aa90SAl Viro extern const struct dentry_operations nfs4_dentry_operations; 20492e1d5beSArjan van de Ven extern const struct inode_operations nfs4_dir_inode_operations; 2056b3b5496SJ. Bruce Fields 2064ce79717STrond Myklebust /* nfs4proc.c */ 207bb8b27e5STrond Myklebust extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); 208bb8b27e5STrond Myklebust extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); 2094d643d1dSAndy Adamson extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred); 210591d71cbSAndy Adamson extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); 2114d643d1dSAndy Adamson extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); 212643168c2SAl Viro extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc); 21355a97593STrond Myklebust extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); 21456659e99STrond Myklebust extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, 2157aaa0b3bSManoj Naik struct nfs4_fs_locations *fs_locations, struct page *page); 216d3c7b7ccSTrond Myklebust extern void nfs4_release_lockowner(const struct nfs4_lock_state *); 21764c2ce8bSAneesh Kumar K.V extern const struct xattr_handler *nfs4_xattr_handlers[]; 2184ce79717STrond Myklebust 219557134a3SAndy Adamson #if defined(CONFIG_NFS_V4_1) 220035168abSTrond Myklebust static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) 221035168abSTrond Myklebust { 222035168abSTrond Myklebust return server->nfs_client->cl_session; 223035168abSTrond Myklebust } 224035168abSTrond Myklebust 225961a828dSTrond Myklebust extern bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy); 226035168abSTrond Myklebust extern int nfs4_setup_sequence(const struct nfs_server *server, 227fbcd4abcSAndy Adamson struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, 2289d12b216STrond Myklebust struct rpc_task *task); 229dc70d7b3SAndy Adamson extern int nfs41_setup_sequence(struct nfs4_session *session, 230dc70d7b3SAndy Adamson struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, 2319d12b216STrond Myklebust struct rpc_task *task); 232557134a3SAndy Adamson extern void nfs4_destroy_session(struct nfs4_session *session); 233557134a3SAndy Adamson extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp); 234f26468fbSTrond Myklebust extern int nfs4_proc_create_session(struct nfs_client *); 235c3fad1b1SAndy Adamson extern int nfs4_proc_destroy_session(struct nfs4_session *); 236fccba804STrond Myklebust extern int nfs4_init_session(struct nfs_server *server); 2379430fb6bSRicardo Labiaga extern int nfs4_proc_get_lease_time(struct nfs_client *clp, 2389430fb6bSRicardo Labiaga struct nfs_fsinfo *fsinfo); 239863a3c6cSAndy Adamson extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, 240ef311537SAndy Adamson bool sync); 24194de8b27SAndy Adamson 24294de8b27SAndy Adamson static inline bool 24394de8b27SAndy Adamson is_ds_only_client(struct nfs_client *clp) 24494de8b27SAndy Adamson { 24594de8b27SAndy Adamson return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == 24694de8b27SAndy Adamson EXCHGID4_FLAG_USE_PNFS_DS; 24794de8b27SAndy Adamson } 248d83217c1SAndy Adamson 249d83217c1SAndy Adamson static inline bool 250d83217c1SAndy Adamson is_ds_client(struct nfs_client *clp) 251d83217c1SAndy Adamson { 252d83217c1SAndy Adamson return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; 253d83217c1SAndy Adamson } 254fbcd4abcSAndy Adamson #else /* CONFIG_NFS_v4_1 */ 255035168abSTrond Myklebust static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) 256035168abSTrond Myklebust { 257035168abSTrond Myklebust return NULL; 258035168abSTrond Myklebust } 259035168abSTrond Myklebust 260035168abSTrond Myklebust static inline int nfs4_setup_sequence(const struct nfs_server *server, 261fbcd4abcSAndy Adamson struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, 2629d12b216STrond Myklebust struct rpc_task *task) 263fbcd4abcSAndy Adamson { 264fbcd4abcSAndy Adamson return 0; 265fbcd4abcSAndy Adamson } 266fccba804STrond Myklebust 267fccba804STrond Myklebust static inline int nfs4_init_session(struct nfs_server *server) 268fccba804STrond Myklebust { 269fccba804STrond Myklebust return 0; 270fccba804STrond Myklebust } 27194de8b27SAndy Adamson 27294de8b27SAndy Adamson static inline bool 27394de8b27SAndy Adamson is_ds_only_client(struct nfs_client *clp) 27494de8b27SAndy Adamson { 27594de8b27SAndy Adamson return false; 27694de8b27SAndy Adamson } 277d83217c1SAndy Adamson 278d83217c1SAndy Adamson static inline bool 279d83217c1SAndy Adamson is_ds_client(struct nfs_client *clp) 280d83217c1SAndy Adamson { 281d83217c1SAndy Adamson return false; 282d83217c1SAndy Adamson } 283557134a3SAndy Adamson #endif /* CONFIG_NFS_V4_1 */ 2844ce79717STrond Myklebust 28597dc1359STrond Myklebust extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; 28629fba38bSBenny Halevy 2874ce79717STrond Myklebust extern const u32 nfs4_fattr_bitmap[2]; 2884ce79717STrond Myklebust extern const u32 nfs4_statfs_bitmap[2]; 2894ce79717STrond Myklebust extern const u32 nfs4_pathconf_bitmap[2]; 290dae100c2SFred Isaman extern const u32 nfs4_fsinfo_bitmap[3]; 291830b8e33SManoj Naik extern const u32 nfs4_fs_locations_bitmap[2]; 2924ce79717STrond Myklebust 2934ce79717STrond Myklebust /* nfs4renewd.c */ 294adfa6f98SDavid Howells extern void nfs4_schedule_state_renewal(struct nfs_client *); 2954ce79717STrond Myklebust extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); 296adfa6f98SDavid Howells extern void nfs4_kill_renewd(struct nfs_client *); 29765f27f38SDavid Howells extern void nfs4_renew_state(struct work_struct *); 2984ce79717STrond Myklebust 2994ce79717STrond Myklebust /* nfs4state.c */ 300a7b72103SAndy Adamson struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp); 3016dc9d57aSTrond Myklebust struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); 302a7b72103SAndy Adamson #if defined(CONFIG_NFS_V4_1) 303a7b72103SAndy Adamson struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); 304b4b82607SAndy Adamson struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp); 3050400a6b0STrond Myklebust extern void nfs4_schedule_session_recovery(struct nfs4_session *); 3060400a6b0STrond Myklebust #else 3070400a6b0STrond Myklebust static inline void nfs4_schedule_session_recovery(struct nfs4_session *session) 3080400a6b0STrond Myklebust { 3090400a6b0STrond Myklebust } 310a7b72103SAndy Adamson #endif /* CONFIG_NFS_V4_1 */ 3114ce79717STrond Myklebust 312d1e284d5STrond Myklebust extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); 3134ce79717STrond Myklebust extern void nfs4_put_state_owner(struct nfs4_state_owner *); 3140aaaf5c4SChuck Lever extern void nfs4_purge_state_owners(struct nfs_server *); 3154ce79717STrond Myklebust extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); 3164ce79717STrond Myklebust extern void nfs4_put_open_state(struct nfs4_state *); 317643168c2SAl Viro extern void nfs4_close_state(struct nfs4_state *, fmode_t); 318643168c2SAl Viro extern void nfs4_close_sync(struct nfs4_state *, fmode_t); 319dc0b027dSTrond Myklebust extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); 3200400a6b0STrond Myklebust extern void nfs4_schedule_lease_recovery(struct nfs_client *); 321b0d3ded1STrond Myklebust extern void nfs4_schedule_state_manager(struct nfs_client *); 322042b60beSTrond Myklebust extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); 3230400a6b0STrond Myklebust extern void nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); 3240629e370SAlexandros Batsakis extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags); 325b9efa1b2SAndy Adamson extern void nfs41_handle_recall_slot(struct nfs_client *clp); 32678fe0f41SWeston Andros Adamson extern void nfs41_handle_server_scope(struct nfs_client *, 32778fe0f41SWeston Andros Adamson struct server_scope **); 328faf5f49cSTrond Myklebust extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); 3298d0a8a9dSTrond Myklebust extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); 33077041ed9STrond Myklebust extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t, pid_t); 3314ce79717STrond Myklebust 3328535b2beSTrond Myklebust extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); 333cee54fc9STrond Myklebust extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); 334cee54fc9STrond Myklebust extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); 335cee54fc9STrond Myklebust extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); 33672211dbeSTrond Myklebust extern void nfs_release_seqid(struct nfs_seqid *seqid); 337cee54fc9STrond Myklebust extern void nfs_free_seqid(struct nfs_seqid *seqid); 338cee54fc9STrond Myklebust 3394ce79717STrond Myklebust extern const nfs4_stateid zero_stateid; 3404ce79717STrond Myklebust 3414ce79717STrond Myklebust /* nfs4xdr.c */ 3424ce79717STrond Myklebust extern struct rpc_procinfo nfs4_procedures[]; 3434ce79717STrond Myklebust 3444ce79717STrond Myklebust struct nfs4_mount_data; 3454ce79717STrond Myklebust 3464ce79717STrond Myklebust /* callback_xdr.c */ 3474ce79717STrond Myklebust extern struct svc_version nfs4_callback_version1; 34807bccc2dSAlexandros Batsakis extern struct svc_version nfs4_callback_version4; 3494ce79717STrond Myklebust 3504ce79717STrond Myklebust #else 3514ce79717STrond Myklebust 352643168c2SAl Viro #define nfs4_close_state(a, b) do { } while (0) 353643168c2SAl Viro #define nfs4_close_sync(a, b) do { } while (0) 3544ce79717STrond Myklebust 3554ce79717STrond Myklebust #endif /* CONFIG_NFS_V4 */ 3564ce79717STrond Myklebust #endif /* __LINUX_FS_NFS_NFS4_FS.H */ 357