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 1289d77c8fSBryan Schumaker #if IS_ENABLED(CONFIG_NFS_V4) 134ce79717STrond Myklebust 1433021279STrond Myklebust #define NFS4_MAX_LOOP_ON_RECOVER (10) 1533021279STrond Myklebust 16c137afabSTrond Myklebust #include <linux/seqlock.h> 17c137afabSTrond Myklebust 184ce79717STrond Myklebust struct idmap; 194ce79717STrond Myklebust 204ce79717STrond Myklebust enum nfs4_client_state { 21e005e804STrond Myklebust NFS4CLNT_MANAGER_RUNNING = 0, 22e598d843STrond Myklebust NFS4CLNT_CHECK_LEASE, 2358d9714aSTrond Myklebust NFS4CLNT_LEASE_EXPIRED, 24b79a4a1bSTrond Myklebust NFS4CLNT_RECLAIM_REBOOT, 25b79a4a1bSTrond Myklebust NFS4CLNT_RECLAIM_NOGRACE, 26707fb4b3STrond Myklebust NFS4CLNT_DELEGRETURN, 276df08189SAndy Adamson NFS4CLNT_SESSION_RESET, 28fd954ae1STrond Myklebust NFS4CLNT_LEASE_CONFIRM, 2978fe0f41SWeston Andros Adamson NFS4CLNT_SERVER_SCOPE_MISMATCH, 302c820d9aSChuck Lever NFS4CLNT_PURGE_STATE, 31a9e64442SWeston Andros Adamson NFS4CLNT_BIND_CONN_TO_SESSION, 324ce79717STrond Myklebust }; 334ce79717STrond Myklebust 342f60ea6bSTrond Myklebust #define NFS4_RENEW_TIMEOUT 0x01 352f60ea6bSTrond Myklebust #define NFS4_RENEW_DELEGATION_CB 0x02 362f60ea6bSTrond Myklebust 3797dc1359STrond Myklebust struct nfs4_minor_version_ops { 3897dc1359STrond Myklebust u32 minor_version; 3939c6daaeSTrond Myklebust unsigned init_caps; 4097dc1359STrond Myklebust 41abf79bb3SChuck Lever int (*init_client)(struct nfs_client *); 42abf79bb3SChuck Lever void (*shutdown_client)(struct nfs_client *); 4336281caaSTrond Myklebust bool (*match_stateid)(const nfs4_stateid *, 44e047a10cSTrond Myklebust const nfs4_stateid *); 45fca78d6dSBryan Schumaker int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, 46fca78d6dSBryan Schumaker struct nfs_fsinfo *); 47c8b2d0bfSTrond Myklebust int (*free_lock_state)(struct nfs_server *, 48c8b2d0bfSTrond Myklebust struct nfs4_lock_state *); 499915ea7eSChuck Lever const struct rpc_call_ops *call_sync_ops; 50c48f4f35STrond Myklebust const struct nfs4_state_recovery_ops *reboot_recovery_ops; 51c48f4f35STrond Myklebust const struct nfs4_state_recovery_ops *nograce_recovery_ops; 52c48f4f35STrond Myklebust const struct nfs4_state_maintenance_ops *state_renewal_ops; 53ec011fe8SChuck Lever const struct nfs4_mig_recovery_ops *mig_recovery_ops; 5497dc1359STrond Myklebust }; 5597dc1359STrond Myklebust 56cee54fc9STrond Myklebust #define NFS_SEQID_CONFIRMED 1 57cee54fc9STrond Myklebust struct nfs_seqid_counter { 5895b72eb0STrond Myklebust ktime_t create_time; 5948c22eb2STrond Myklebust int owner_id; 60cee54fc9STrond Myklebust int flags; 61cee54fc9STrond Myklebust u32 counter; 627ba127abSTrond Myklebust spinlock_t lock; /* Protects the list */ 637ba127abSTrond Myklebust struct list_head list; /* Defines sequence of RPC calls */ 647ba127abSTrond Myklebust struct rpc_wait_queue wait; /* RPC call delay queue */ 65cee54fc9STrond Myklebust }; 66cee54fc9STrond Myklebust 67cee54fc9STrond Myklebust struct nfs_seqid { 68cee54fc9STrond Myklebust struct nfs_seqid_counter *sequence; 694e51336aSTrond Myklebust struct list_head list; 704601df20STrond Myklebust struct rpc_task *task; 71cee54fc9STrond Myklebust }; 72cee54fc9STrond Myklebust 73cee54fc9STrond Myklebust static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) 74cee54fc9STrond Myklebust { 75cee54fc9STrond Myklebust if (seqid_mutating_err(-status)) 76cee54fc9STrond Myklebust seqid->flags |= NFS_SEQID_CONFIRMED; 77cee54fc9STrond Myklebust } 78cee54fc9STrond Myklebust 79cee54fc9STrond Myklebust /* 804ce79717STrond Myklebust * NFS4 state_owners and lock_owners are simply labels for ordered 814ce79717STrond Myklebust * sequences of RPC calls. Their sole purpose is to provide once-only 824ce79717STrond Myklebust * semantics by allowing the server to identify replayed requests. 834ce79717STrond Myklebust */ 844ce79717STrond Myklebust struct nfs4_state_owner { 856f2e64d3STrond Myklebust struct nfs_server *so_server; 860aaaf5c4SChuck Lever struct list_head so_lru; 870aaaf5c4SChuck Lever unsigned long so_expires; 8824d292b8SChuck Lever struct rb_node so_server_node; 894ce79717STrond Myklebust 904ce79717STrond Myklebust struct rpc_cred *so_cred; /* Associated cred */ 919f958ab8STrond Myklebust 929f958ab8STrond Myklebust spinlock_t so_lock; 939f958ab8STrond Myklebust atomic_t so_count; 947eff03aeSTrond Myklebust unsigned long so_flags; 954ce79717STrond Myklebust struct list_head so_states; 96cee54fc9STrond Myklebust struct nfs_seqid_counter so_seqid; 97c137afabSTrond Myklebust seqcount_t so_reclaim_seqcount; 9865b62a29STrond Myklebust struct mutex so_delegreturn_mutex; 994ce79717STrond Myklebust }; 1004ce79717STrond Myklebust 1017eff03aeSTrond Myklebust enum { 1027eff03aeSTrond Myklebust NFS_OWNER_RECLAIM_REBOOT, 1037eff03aeSTrond Myklebust NFS_OWNER_RECLAIM_NOGRACE 1047eff03aeSTrond Myklebust }; 1057eff03aeSTrond Myklebust 106afe6c27cSAlexandros Batsakis #define NFS_LOCK_NEW 0 107afe6c27cSAlexandros Batsakis #define NFS_LOCK_RECLAIM 1 108afe6c27cSAlexandros Batsakis #define NFS_LOCK_EXPIRED 2 109afe6c27cSAlexandros Batsakis 1104ce79717STrond Myklebust /* 1114ce79717STrond Myklebust * struct nfs4_state maintains the client-side state for a given 1124ce79717STrond Myklebust * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). 1134ce79717STrond Myklebust * 1144ce79717STrond Myklebust * OPEN: 1154ce79717STrond Myklebust * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, 1164ce79717STrond Myklebust * we need to know how many files are open for reading or writing on a 1174ce79717STrond Myklebust * given inode. This information too is stored here. 1184ce79717STrond Myklebust * 1194ce79717STrond Myklebust * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) 1204ce79717STrond Myklebust */ 1214ce79717STrond Myklebust 12277041ed9STrond Myklebust struct nfs4_lock_owner { 12377041ed9STrond Myklebust unsigned int lo_type; 12477041ed9STrond Myklebust #define NFS4_ANY_LOCK_TYPE (0U) 12577041ed9STrond Myklebust #define NFS4_FLOCK_LOCK_TYPE (1U << 0) 12677041ed9STrond Myklebust #define NFS4_POSIX_LOCK_TYPE (1U << 1) 12777041ed9STrond Myklebust union { 12877041ed9STrond Myklebust fl_owner_t posix_owner; 12977041ed9STrond Myklebust pid_t flock_owner; 13077041ed9STrond Myklebust } lo_u; 13177041ed9STrond Myklebust }; 13277041ed9STrond Myklebust 1334ce79717STrond Myklebust struct nfs4_lock_state { 1344ce79717STrond Myklebust struct list_head ls_locks; /* Other lock stateids */ 1358d0a8a9dSTrond Myklebust struct nfs4_state * ls_state; /* Pointer to open state */ 136795a88c9STrond Myklebust #define NFS_LOCK_INITIALIZED 0 137ef1820f9SNeilBrown #define NFS_LOCK_LOST 1 138795a88c9STrond Myklebust unsigned long 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 */ 14992b40e93STrond Myklebust NFS_OPEN_STATE, /* OPEN stateid is set */ 150003707c7STrond Myklebust NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ 151003707c7STrond Myklebust NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ 152003707c7STrond Myklebust NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ 153b79a4a1bSTrond Myklebust NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ 154b79a4a1bSTrond Myklebust NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ 1558e469ebdSTrond Myklebust NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ 1565d422301STrond Myklebust NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ 1574ce79717STrond Myklebust }; 1584ce79717STrond Myklebust 1594ce79717STrond Myklebust struct nfs4_state { 1604ce79717STrond Myklebust struct list_head open_states; /* List of states for the same state_owner */ 1614ce79717STrond Myklebust struct list_head inode_states; /* List of states for the same inode */ 1624ce79717STrond Myklebust struct list_head lock_states; /* List of subservient lock stateids */ 1634ce79717STrond Myklebust 1644ce79717STrond Myklebust struct nfs4_state_owner *owner; /* Pointer to the open owner */ 1654ce79717STrond Myklebust struct inode *inode; /* Pointer to the inode */ 1664ce79717STrond Myklebust 1674ce79717STrond Myklebust unsigned long flags; /* Do we hold any locks? */ 1688d0a8a9dSTrond Myklebust spinlock_t state_lock; /* Protects the lock_states list */ 1694ce79717STrond Myklebust 1708bda4e4cSTrond Myklebust seqlock_t seqlock; /* Protects the stateid/open_stateid */ 171003707c7STrond Myklebust nfs4_stateid stateid; /* Current stateid: may be delegation */ 172003707c7STrond Myklebust nfs4_stateid open_stateid; /* OPEN stateid */ 1734ce79717STrond Myklebust 1748bda4e4cSTrond Myklebust /* The following 3 fields are protected by owner->so_lock */ 175003707c7STrond Myklebust unsigned int n_rdonly; /* Number of read-only references */ 176003707c7STrond Myklebust unsigned int n_wronly; /* Number of write-only references */ 177003707c7STrond Myklebust unsigned int n_rdwr; /* Number of read/write references */ 178dc0b027dSTrond Myklebust fmode_t state; /* State on the server (R,W, or RW) */ 1794ce79717STrond Myklebust atomic_t count; 1804ce79717STrond Myklebust }; 1814ce79717STrond Myklebust 1824ce79717STrond Myklebust 1834ce79717STrond Myklebust struct nfs4_exception { 1844ce79717STrond Myklebust long timeout; 1854ce79717STrond Myklebust int retry; 1869e33bed5STrond Myklebust struct nfs4_state *state; 1873114ea7aSTrond Myklebust struct inode *inode; 1884ce79717STrond Myklebust }; 1894ce79717STrond Myklebust 1904ce79717STrond Myklebust struct nfs4_state_recovery_ops { 1917eff03aeSTrond Myklebust int owner_flag_bit; 192b79a4a1bSTrond Myklebust int state_flag_bit; 1934ce79717STrond Myklebust int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); 1944ce79717STrond Myklebust int (*recover_lock)(struct nfs4_state *, struct file_lock *); 195591d71cbSAndy Adamson int (*establish_clid)(struct nfs_client *, struct rpc_cred *); 196965e9c23STrond Myklebust int (*reclaim_complete)(struct nfs_client *, struct rpc_cred *); 19705f4c350SChuck Lever int (*detect_trunking)(struct nfs_client *, struct nfs_client **, 19805f4c350SChuck Lever struct rpc_cred *); 1994ce79717STrond Myklebust }; 2004ce79717STrond Myklebust 20129fba38bSBenny Halevy struct nfs4_state_maintenance_ops { 2022f60ea6bSTrond Myklebust int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); 203a7b72103SAndy Adamson struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); 2048e69514fSBenny Halevy int (*renew_lease)(struct nfs_client *, struct rpc_cred *); 20529fba38bSBenny Halevy }; 20629fba38bSBenny Halevy 207ec011fe8SChuck Lever struct nfs4_mig_recovery_ops { 208b03d735bSChuck Lever int (*get_locations)(struct inode *, struct nfs4_fs_locations *, 209b03d735bSChuck Lever struct page *, struct rpc_cred *); 210ec011fe8SChuck Lever }; 211ec011fe8SChuck Lever 212f786aa90SAl Viro extern const struct dentry_operations nfs4_dentry_operations; 21373a79706SBryan Schumaker 21473a79706SBryan Schumaker /* dir.c */ 21573a79706SBryan Schumaker int nfs_atomic_open(struct inode *, struct dentry *, struct file *, 21673a79706SBryan Schumaker unsigned, umode_t, int *); 2176b3b5496SJ. Bruce Fields 2181ae811eeSbjschuma@gmail.com /* super.c */ 2191ae811eeSbjschuma@gmail.com extern struct file_system_type nfs4_fs_type; 2201ae811eeSbjschuma@gmail.com 22172de53ecSBryan Schumaker /* nfs4namespace.c */ 2222671bfc3SBryan Schumaker rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *); 22372de53ecSBryan Schumaker struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *); 224281cad46SBryan Schumaker struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *, 225281cad46SBryan Schumaker struct nfs_fh *, struct nfs_fattr *); 226800c06a5SChuck Lever int nfs4_replace_transport(struct nfs_server *server, 227800c06a5SChuck Lever const struct nfs4_fs_locations *locations); 22872de53ecSBryan Schumaker 2294ce79717STrond Myklebust /* nfs4proc.c */ 230bb8b27e5STrond Myklebust extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); 231bb8b27e5STrond Myklebust extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); 2325e6b1990STrond Myklebust extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); 2332cf047c9STrond Myklebust extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred); 2344d643d1dSAndy Adamson extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred); 23566245539STrond Myklebust extern int nfs4_destroy_clientid(struct nfs_client *clp); 236591d71cbSAndy Adamson extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); 2374d643d1dSAndy Adamson extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); 2381f7977c1STrond Myklebust extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait); 23955a97593STrond Myklebust extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); 240f05d147fSBryan Schumaker extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, 241f05d147fSBryan Schumaker struct nfs4_fs_locations *, struct page *); 242b03d735bSChuck Lever extern int nfs4_proc_get_locations(struct inode *, struct nfs4_fs_locations *, 243b03d735bSChuck Lever struct page *page, struct rpc_cred *); 244f05d147fSBryan Schumaker extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, struct qstr *, 245f05d147fSBryan Schumaker struct nfs_fh *, struct nfs_fattr *); 24672de53ecSBryan Schumaker extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); 24764c2ce8bSAneesh Kumar K.V extern const struct xattr_handler *nfs4_xattr_handlers[]; 2485521abfdSTrond Myklebust extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, 2499b206149STrond Myklebust const struct nfs_open_context *ctx, 2509b206149STrond Myklebust const struct nfs_lock_context *l_ctx, 2519b206149STrond Myklebust fmode_t fmode); 2524ce79717STrond Myklebust 253557134a3SAndy Adamson #if defined(CONFIG_NFS_V4_1) 254035168abSTrond Myklebust static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) 255035168abSTrond Myklebust { 256035168abSTrond Myklebust return server->nfs_client->cl_session; 257035168abSTrond Myklebust } 258035168abSTrond Myklebust 259dc70d7b3SAndy Adamson extern int nfs41_setup_sequence(struct nfs4_session *session, 260dc70d7b3SAndy Adamson struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, 2619d12b216STrond Myklebust struct rpc_task *task); 262848f5bdaSTrond Myklebust extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); 263848f5bdaSTrond Myklebust extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); 2649430fb6bSRicardo Labiaga extern int nfs4_proc_get_lease_time(struct nfs_client *clp, 2659430fb6bSRicardo Labiaga struct nfs_fsinfo *fsinfo); 266863a3c6cSAndy Adamson extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, 267ef311537SAndy Adamson bool sync); 26894de8b27SAndy Adamson 26994de8b27SAndy Adamson static inline bool 27094de8b27SAndy Adamson is_ds_only_client(struct nfs_client *clp) 27194de8b27SAndy Adamson { 27294de8b27SAndy Adamson return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == 27394de8b27SAndy Adamson EXCHGID4_FLAG_USE_PNFS_DS; 27494de8b27SAndy Adamson } 275d83217c1SAndy Adamson 276d83217c1SAndy Adamson static inline bool 277d83217c1SAndy Adamson is_ds_client(struct nfs_client *clp) 278d83217c1SAndy Adamson { 279d83217c1SAndy Adamson return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; 280d83217c1SAndy Adamson } 281ab4c2361SWeston Andros Adamson 2828c21c62cSWeston Andros Adamson static inline bool 2838c21c62cSWeston Andros Adamson _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, 284ab4c2361SWeston Andros Adamson struct rpc_clnt **clntp, struct rpc_message *msg) 285ab4c2361SWeston Andros Adamson { 286ab4c2361SWeston Andros Adamson struct rpc_cred *newcred = NULL; 287ab4c2361SWeston Andros Adamson rpc_authflavor_t flavor; 288ab4c2361SWeston Andros Adamson 289ab4c2361SWeston Andros Adamson if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { 290ab4c2361SWeston Andros Adamson spin_lock(&clp->cl_lock); 291ab4c2361SWeston Andros Adamson if (clp->cl_machine_cred != NULL) 292ade33ff5SWeston Andros Adamson /* don't call get_rpccred on the machine cred - 293ade33ff5SWeston Andros Adamson * a reference will be held for life of clp */ 294ade33ff5SWeston Andros Adamson newcred = clp->cl_machine_cred; 295ab4c2361SWeston Andros Adamson spin_unlock(&clp->cl_lock); 296ab4c2361SWeston Andros Adamson msg->rpc_cred = newcred; 297ab4c2361SWeston Andros Adamson 298ab4c2361SWeston Andros Adamson flavor = clp->cl_rpcclient->cl_auth->au_flavor; 299312cd958SWeston Andros Adamson WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I && 300ab4c2361SWeston Andros Adamson flavor != RPC_AUTH_GSS_KRB5P); 301ab4c2361SWeston Andros Adamson *clntp = clp->cl_rpcclient; 3028c21c62cSWeston Andros Adamson 3038c21c62cSWeston Andros Adamson return true; 304ab4c2361SWeston Andros Adamson } 3058c21c62cSWeston Andros Adamson return false; 3068c21c62cSWeston Andros Adamson } 3078c21c62cSWeston Andros Adamson 3088c21c62cSWeston Andros Adamson /* 3098c21c62cSWeston Andros Adamson * Function responsible for determining if an rpc_message should use the 3108c21c62cSWeston Andros Adamson * machine cred under SP4_MACH_CRED and if so switching the credential and 3118c21c62cSWeston Andros Adamson * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). 3128c21c62cSWeston Andros Adamson * Should be called before rpc_call_sync/rpc_call_async. 3138c21c62cSWeston Andros Adamson */ 3148c21c62cSWeston Andros Adamson static inline void 3158c21c62cSWeston Andros Adamson nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, 3168c21c62cSWeston Andros Adamson struct rpc_clnt **clntp, struct rpc_message *msg) 3178c21c62cSWeston Andros Adamson { 3188c21c62cSWeston Andros Adamson _nfs4_state_protect(clp, sp4_mode, clntp, msg); 3198c21c62cSWeston Andros Adamson } 3208c21c62cSWeston Andros Adamson 3218c21c62cSWeston Andros Adamson /* 3228c21c62cSWeston Andros Adamson * Special wrapper to nfs4_state_protect for write. 3238c21c62cSWeston Andros Adamson * If WRITE can use machine cred but COMMIT cannot, make sure all writes 3248c21c62cSWeston Andros Adamson * that use machine cred use NFS_FILE_SYNC. 3258c21c62cSWeston Andros Adamson */ 3268c21c62cSWeston Andros Adamson static inline void 3278c21c62cSWeston Andros Adamson nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, 3288c21c62cSWeston Andros Adamson struct rpc_message *msg, struct nfs_write_data *wdata) 3298c21c62cSWeston Andros Adamson { 3308c21c62cSWeston Andros Adamson if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && 3318c21c62cSWeston Andros Adamson !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) 3328c21c62cSWeston Andros Adamson wdata->args.stable = NFS_FILE_SYNC; 333ab4c2361SWeston Andros Adamson } 334fbcd4abcSAndy Adamson #else /* CONFIG_NFS_v4_1 */ 335035168abSTrond Myklebust static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) 336035168abSTrond Myklebust { 337035168abSTrond Myklebust return NULL; 338035168abSTrond Myklebust } 339035168abSTrond Myklebust 34094de8b27SAndy Adamson static inline bool 34194de8b27SAndy Adamson is_ds_only_client(struct nfs_client *clp) 34294de8b27SAndy Adamson { 34394de8b27SAndy Adamson return false; 34494de8b27SAndy Adamson } 345d83217c1SAndy Adamson 346d83217c1SAndy Adamson static inline bool 347d83217c1SAndy Adamson is_ds_client(struct nfs_client *clp) 348d83217c1SAndy Adamson { 349d83217c1SAndy Adamson return false; 350d83217c1SAndy Adamson } 351ab4c2361SWeston Andros Adamson 352ab4c2361SWeston Andros Adamson static inline void 353ab4c2361SWeston Andros Adamson nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, 354ab4c2361SWeston Andros Adamson struct rpc_clnt **clntp, struct rpc_message *msg) 355ab4c2361SWeston Andros Adamson { 356ab4c2361SWeston Andros Adamson } 3578c21c62cSWeston Andros Adamson 3588c21c62cSWeston Andros Adamson static inline void 3598c21c62cSWeston Andros Adamson nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, 3608c21c62cSWeston Andros Adamson struct rpc_message *msg, struct nfs_write_data *wdata) 3618c21c62cSWeston Andros Adamson { 3628c21c62cSWeston Andros Adamson } 363557134a3SAndy Adamson #endif /* CONFIG_NFS_V4_1 */ 3644ce79717STrond Myklebust 36597dc1359STrond Myklebust extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; 36629fba38bSBenny Halevy 3671549210fSTrond Myklebust extern const u32 nfs4_fattr_bitmap[3]; 368a09df2caSDavid Quigley extern const u32 nfs4_statfs_bitmap[3]; 369a09df2caSDavid Quigley extern const u32 nfs4_pathconf_bitmap[3]; 370dae100c2SFred Isaman extern const u32 nfs4_fsinfo_bitmap[3]; 371a09df2caSDavid Quigley extern const u32 nfs4_fs_locations_bitmap[3]; 3724ce79717STrond Myklebust 373abf79bb3SChuck Lever void nfs40_shutdown_client(struct nfs_client *); 374abf79bb3SChuck Lever void nfs41_shutdown_client(struct nfs_client *); 375abf79bb3SChuck Lever int nfs40_init_client(struct nfs_client *); 376abf79bb3SChuck Lever int nfs41_init_client(struct nfs_client *); 377cdb7ecedSBryan Schumaker void nfs4_free_client(struct nfs_client *); 378cdb7ecedSBryan Schumaker 3796663ee7fSBryan Schumaker struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); 3806663ee7fSBryan Schumaker 3814ce79717STrond Myklebust /* nfs4renewd.c */ 382adfa6f98SDavid Howells extern void nfs4_schedule_state_renewal(struct nfs_client *); 3834ce79717STrond Myklebust extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); 384adfa6f98SDavid Howells extern void nfs4_kill_renewd(struct nfs_client *); 38565f27f38SDavid Howells extern void nfs4_renew_state(struct work_struct *); 3864ce79717STrond Myklebust 3874ce79717STrond Myklebust /* nfs4state.c */ 38873d8bde5SChuck Lever struct rpc_cred *nfs4_get_clid_cred(struct nfs_client *clp); 389fe20d7d5STrond Myklebust struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); 3906dc9d57aSTrond Myklebust struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); 39105f4c350SChuck Lever int nfs4_discover_server_trunking(struct nfs_client *clp, 39205f4c350SChuck Lever struct nfs_client **); 39305f4c350SChuck Lever int nfs40_discover_server_trunking(struct nfs_client *clp, 39405f4c350SChuck Lever struct nfs_client **, struct rpc_cred *); 395a7b72103SAndy Adamson #if defined(CONFIG_NFS_V4_1) 39605f4c350SChuck Lever int nfs41_discover_server_trunking(struct nfs_client *clp, 39705f4c350SChuck Lever struct nfs_client **, struct rpc_cred *); 3989f594791STrond Myklebust extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); 399ac074835STrond Myklebust extern void nfs41_server_notify_target_slotid_update(struct nfs_client *clp); 400c10e4498STrond Myklebust extern void nfs41_server_notify_highest_slotid_update(struct nfs_client *clp); 4015d63360dSTrond Myklebust 4020400a6b0STrond Myklebust #else 4039f594791STrond Myklebust static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) 4040400a6b0STrond Myklebust { 4050400a6b0STrond Myklebust } 406a7b72103SAndy Adamson #endif /* CONFIG_NFS_V4_1 */ 4074ce79717STrond Myklebust 408d1e284d5STrond Myklebust extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); 4094ce79717STrond Myklebust extern void nfs4_put_state_owner(struct nfs4_state_owner *); 4100aaaf5c4SChuck Lever extern void nfs4_purge_state_owners(struct nfs_server *); 4114ce79717STrond Myklebust extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); 4124ce79717STrond Myklebust extern void nfs4_put_open_state(struct nfs4_state *); 413643168c2SAl Viro extern void nfs4_close_state(struct nfs4_state *, fmode_t); 414643168c2SAl Viro extern void nfs4_close_sync(struct nfs4_state *, fmode_t); 415dc0b027dSTrond Myklebust extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); 416a1d0b5eeSTrond Myklebust extern void nfs_inode_find_state_and_recover(struct inode *inode, 417a1d0b5eeSTrond Myklebust const nfs4_stateid *stateid); 4180400a6b0STrond Myklebust extern void nfs4_schedule_lease_recovery(struct nfs_client *); 41933021279STrond Myklebust extern int nfs4_wait_clnt_recover(struct nfs_client *clp); 42033021279STrond Myklebust extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); 421b0d3ded1STrond Myklebust extern void nfs4_schedule_state_manager(struct nfs_client *); 422042b60beSTrond Myklebust extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); 4235d422301STrond Myklebust extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); 4240629e370SAlexandros Batsakis extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags); 42578fe0f41SWeston Andros Adamson extern void nfs41_handle_server_scope(struct nfs_client *, 42679d4e1f0SChuck Lever struct nfs41_server_scope **); 427faf5f49cSTrond Myklebust extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); 4288d0a8a9dSTrond Myklebust extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); 4295521abfdSTrond Myklebust extern int nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *, 4302a369153STrond Myklebust fmode_t, const struct nfs_lockowner *); 4314ce79717STrond Myklebust 4328535b2beSTrond Myklebust extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); 433cee54fc9STrond Myklebust extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); 434cee54fc9STrond Myklebust extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); 435cee54fc9STrond Myklebust extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); 43672211dbeSTrond Myklebust extern void nfs_release_seqid(struct nfs_seqid *seqid); 437cee54fc9STrond Myklebust extern void nfs_free_seqid(struct nfs_seqid *seqid); 438cee54fc9STrond Myklebust 4395ae67c4fSTrond Myklebust extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); 440cf470c3eSTrond Myklebust 4414ce79717STrond Myklebust extern const nfs4_stateid zero_stateid; 4424ce79717STrond Myklebust 443129d1977SBryan Schumaker /* nfs4super.c */ 444fbdefd64SBryan Schumaker struct nfs_mount_info; 445ab7017a3SBryan Schumaker extern struct nfs_subversion nfs_v4; 446ff9099f2SBryan Schumaker struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); 447fac1e8e4SBryan Schumaker extern bool nfs4_disable_idmapping; 448fac1e8e4SBryan Schumaker extern unsigned short max_session_slots; 449fac1e8e4SBryan Schumaker extern unsigned short send_implementation_id; 450f6de7a39STrond Myklebust extern bool recover_lost_locks; 45189d77c8fSBryan Schumaker 4526f2ea7f2SChuck Lever #define NFS4_CLIENT_ID_UNIQ_LEN (64) 4536f2ea7f2SChuck Lever extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; 4546f2ea7f2SChuck Lever 455466bfe7fSBryan Schumaker /* nfs4sysctl.c */ 456466bfe7fSBryan Schumaker #ifdef CONFIG_SYSCTL 457466bfe7fSBryan Schumaker int nfs4_register_sysctl(void); 458466bfe7fSBryan Schumaker void nfs4_unregister_sysctl(void); 459466bfe7fSBryan Schumaker #else 460466bfe7fSBryan Schumaker static inline int nfs4_register_sysctl(void) 461466bfe7fSBryan Schumaker { 462466bfe7fSBryan Schumaker return 0; 463466bfe7fSBryan Schumaker } 464466bfe7fSBryan Schumaker 4650add3e85SRandy Dunlap static inline void nfs4_unregister_sysctl(void) 466466bfe7fSBryan Schumaker { 467466bfe7fSBryan Schumaker } 468466bfe7fSBryan Schumaker #endif 469466bfe7fSBryan Schumaker 4704ce79717STrond Myklebust /* nfs4xdr.c */ 4714ce79717STrond Myklebust extern struct rpc_procinfo nfs4_procedures[]; 4724ce79717STrond Myklebust 4734ce79717STrond Myklebust struct nfs4_mount_data; 4744ce79717STrond Myklebust 4754ce79717STrond Myklebust /* callback_xdr.c */ 4764ce79717STrond Myklebust extern struct svc_version nfs4_callback_version1; 47707bccc2dSAlexandros Batsakis extern struct svc_version nfs4_callback_version4; 4784ce79717STrond Myklebust 479f597c537STrond Myklebust static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) 480f597c537STrond Myklebust { 4812d2f24adSTrond Myklebust memcpy(dst, src, sizeof(*dst)); 482f597c537STrond Myklebust } 483f597c537STrond Myklebust 484f597c537STrond Myklebust static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) 485f597c537STrond Myklebust { 4862d2f24adSTrond Myklebust return memcmp(dst, src, sizeof(*dst)) == 0; 487f597c537STrond Myklebust } 488f597c537STrond Myklebust 4895d422301STrond Myklebust static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) 4905d422301STrond Myklebust { 4915d422301STrond Myklebust return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; 4925d422301STrond Myklebust } 4935d422301STrond Myklebust 4944ce79717STrond Myklebust #else 4954ce79717STrond Myklebust 496643168c2SAl Viro #define nfs4_close_state(a, b) do { } while (0) 497643168c2SAl Viro #define nfs4_close_sync(a, b) do { } while (0) 4988c21c62cSWeston Andros Adamson #define nfs4_state_protect(a, b, c, d) do { } while (0) 4998c21c62cSWeston Andros Adamson #define nfs4_state_protect_write(a, b, c, d) do { } while (0) 5004ce79717STrond Myklebust 5014ce79717STrond Myklebust #endif /* CONFIG_NFS_V4 */ 5024ce79717STrond Myklebust #endif /* __LINUX_FS_NFS_NFS4_FS.H */ 503