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 12694e096fSAnna Schumaker #if defined(CONFIG_NFS_V4_2) 13694e096fSAnna Schumaker #define NFS4_MAX_MINOR_VERSION 2 14694e096fSAnna Schumaker #elif defined(CONFIG_NFS_V4_1) 15694e096fSAnna Schumaker #define NFS4_MAX_MINOR_VERSION 1 16694e096fSAnna Schumaker #else 17694e096fSAnna Schumaker #define NFS4_MAX_MINOR_VERSION 0 18694e096fSAnna Schumaker #endif 19694e096fSAnna Schumaker 2089d77c8fSBryan Schumaker #if IS_ENABLED(CONFIG_NFS_V4) 214ce79717STrond Myklebust 2233021279STrond Myklebust #define NFS4_MAX_LOOP_ON_RECOVER (10) 2333021279STrond Myklebust 24c137afabSTrond Myklebust #include <linux/seqlock.h> 25c137afabSTrond Myklebust 264ce79717STrond Myklebust struct idmap; 274ce79717STrond Myklebust 284ce79717STrond Myklebust enum nfs4_client_state { 29e005e804STrond Myklebust NFS4CLNT_MANAGER_RUNNING = 0, 30e598d843STrond Myklebust NFS4CLNT_CHECK_LEASE, 3158d9714aSTrond Myklebust NFS4CLNT_LEASE_EXPIRED, 32b79a4a1bSTrond Myklebust NFS4CLNT_RECLAIM_REBOOT, 33b79a4a1bSTrond Myklebust NFS4CLNT_RECLAIM_NOGRACE, 34707fb4b3STrond Myklebust NFS4CLNT_DELEGRETURN, 356df08189SAndy Adamson NFS4CLNT_SESSION_RESET, 36fd954ae1STrond Myklebust NFS4CLNT_LEASE_CONFIRM, 3778fe0f41SWeston Andros Adamson NFS4CLNT_SERVER_SCOPE_MISMATCH, 382c820d9aSChuck Lever NFS4CLNT_PURGE_STATE, 39a9e64442SWeston Andros Adamson NFS4CLNT_BIND_CONN_TO_SESSION, 40c9fdeb28SChuck Lever NFS4CLNT_MOVED, 41b7f7a66eSChuck Lever NFS4CLNT_LEASE_MOVED, 424ce79717STrond Myklebust }; 434ce79717STrond Myklebust 442f60ea6bSTrond Myklebust #define NFS4_RENEW_TIMEOUT 0x01 452f60ea6bSTrond Myklebust #define NFS4_RENEW_DELEGATION_CB 0x02 462f60ea6bSTrond Myklebust 4797dc1359STrond Myklebust struct nfs4_minor_version_ops { 4897dc1359STrond Myklebust u32 minor_version; 4939c6daaeSTrond Myklebust unsigned init_caps; 5097dc1359STrond Myklebust 51abf79bb3SChuck Lever int (*init_client)(struct nfs_client *); 52abf79bb3SChuck Lever void (*shutdown_client)(struct nfs_client *); 5336281caaSTrond Myklebust bool (*match_stateid)(const nfs4_stateid *, 54e047a10cSTrond Myklebust const nfs4_stateid *); 55fca78d6dSBryan Schumaker int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, 56fca78d6dSBryan Schumaker struct nfs_fsinfo *); 57c8b2d0bfSTrond Myklebust int (*free_lock_state)(struct nfs_server *, 58c8b2d0bfSTrond Myklebust struct nfs4_lock_state *); 599915ea7eSChuck Lever const struct rpc_call_ops *call_sync_ops; 60c48f4f35STrond Myklebust const struct nfs4_state_recovery_ops *reboot_recovery_ops; 61c48f4f35STrond Myklebust const struct nfs4_state_recovery_ops *nograce_recovery_ops; 62c48f4f35STrond Myklebust const struct nfs4_state_maintenance_ops *state_renewal_ops; 63ec011fe8SChuck Lever const struct nfs4_mig_recovery_ops *mig_recovery_ops; 6497dc1359STrond Myklebust }; 6597dc1359STrond Myklebust 66cee54fc9STrond Myklebust #define NFS_SEQID_CONFIRMED 1 67cee54fc9STrond Myklebust struct nfs_seqid_counter { 6895b72eb0STrond Myklebust ktime_t create_time; 6948c22eb2STrond Myklebust int owner_id; 70cee54fc9STrond Myklebust int flags; 71cee54fc9STrond Myklebust u32 counter; 727ba127abSTrond Myklebust spinlock_t lock; /* Protects the list */ 737ba127abSTrond Myklebust struct list_head list; /* Defines sequence of RPC calls */ 747ba127abSTrond Myklebust struct rpc_wait_queue wait; /* RPC call delay queue */ 75cee54fc9STrond Myklebust }; 76cee54fc9STrond Myklebust 77cee54fc9STrond Myklebust struct nfs_seqid { 78cee54fc9STrond Myklebust struct nfs_seqid_counter *sequence; 794e51336aSTrond Myklebust struct list_head list; 804601df20STrond Myklebust struct rpc_task *task; 81cee54fc9STrond Myklebust }; 82cee54fc9STrond Myklebust 83cee54fc9STrond Myklebust static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) 84cee54fc9STrond Myklebust { 85cee54fc9STrond Myklebust if (seqid_mutating_err(-status)) 86cee54fc9STrond Myklebust seqid->flags |= NFS_SEQID_CONFIRMED; 87cee54fc9STrond Myklebust } 88cee54fc9STrond Myklebust 89cee54fc9STrond Myklebust /* 904ce79717STrond Myklebust * NFS4 state_owners and lock_owners are simply labels for ordered 914ce79717STrond Myklebust * sequences of RPC calls. Their sole purpose is to provide once-only 924ce79717STrond Myklebust * semantics by allowing the server to identify replayed requests. 934ce79717STrond Myklebust */ 944ce79717STrond Myklebust struct nfs4_state_owner { 956f2e64d3STrond Myklebust struct nfs_server *so_server; 960aaaf5c4SChuck Lever struct list_head so_lru; 970aaaf5c4SChuck Lever unsigned long so_expires; 9824d292b8SChuck Lever struct rb_node so_server_node; 994ce79717STrond Myklebust 1004ce79717STrond Myklebust struct rpc_cred *so_cred; /* Associated cred */ 1019f958ab8STrond Myklebust 1029f958ab8STrond Myklebust spinlock_t so_lock; 1039f958ab8STrond Myklebust atomic_t so_count; 1047eff03aeSTrond Myklebust unsigned long so_flags; 1054ce79717STrond Myklebust struct list_head so_states; 106cee54fc9STrond Myklebust struct nfs_seqid_counter so_seqid; 107c137afabSTrond Myklebust seqcount_t so_reclaim_seqcount; 10865b62a29STrond Myklebust struct mutex so_delegreturn_mutex; 1094ce79717STrond Myklebust }; 1104ce79717STrond Myklebust 1117eff03aeSTrond Myklebust enum { 1127eff03aeSTrond Myklebust NFS_OWNER_RECLAIM_REBOOT, 1137eff03aeSTrond Myklebust NFS_OWNER_RECLAIM_NOGRACE 1147eff03aeSTrond Myklebust }; 1157eff03aeSTrond Myklebust 116afe6c27cSAlexandros Batsakis #define NFS_LOCK_NEW 0 117afe6c27cSAlexandros Batsakis #define NFS_LOCK_RECLAIM 1 118afe6c27cSAlexandros Batsakis #define NFS_LOCK_EXPIRED 2 119afe6c27cSAlexandros Batsakis 1204ce79717STrond Myklebust /* 1214ce79717STrond Myklebust * struct nfs4_state maintains the client-side state for a given 1224ce79717STrond Myklebust * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). 1234ce79717STrond Myklebust * 1244ce79717STrond Myklebust * OPEN: 1254ce79717STrond Myklebust * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, 1264ce79717STrond Myklebust * we need to know how many files are open for reading or writing on a 1274ce79717STrond Myklebust * given inode. This information too is stored here. 1284ce79717STrond Myklebust * 1294ce79717STrond Myklebust * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) 1304ce79717STrond Myklebust */ 1314ce79717STrond Myklebust 13277041ed9STrond Myklebust struct nfs4_lock_owner { 13377041ed9STrond Myklebust unsigned int lo_type; 13477041ed9STrond Myklebust #define NFS4_ANY_LOCK_TYPE (0U) 13577041ed9STrond Myklebust #define NFS4_FLOCK_LOCK_TYPE (1U << 0) 13677041ed9STrond Myklebust #define NFS4_POSIX_LOCK_TYPE (1U << 1) 13777041ed9STrond Myklebust union { 13877041ed9STrond Myklebust fl_owner_t posix_owner; 13977041ed9STrond Myklebust pid_t flock_owner; 14077041ed9STrond Myklebust } lo_u; 14177041ed9STrond Myklebust }; 14277041ed9STrond Myklebust 1434ce79717STrond Myklebust struct nfs4_lock_state { 1444ce79717STrond Myklebust struct list_head ls_locks; /* Other lock stateids */ 1458d0a8a9dSTrond Myklebust struct nfs4_state * ls_state; /* Pointer to open state */ 146795a88c9STrond Myklebust #define NFS_LOCK_INITIALIZED 0 147ef1820f9SNeilBrown #define NFS_LOCK_LOST 1 148795a88c9STrond Myklebust unsigned long ls_flags; 149cee54fc9STrond Myklebust struct nfs_seqid_counter ls_seqid; 1504ce79717STrond Myklebust nfs4_stateid ls_stateid; 1514ce79717STrond Myklebust atomic_t ls_count; 15277041ed9STrond Myklebust struct nfs4_lock_owner ls_owner; 1534ce79717STrond Myklebust }; 1544ce79717STrond Myklebust 1554ce79717STrond Myklebust /* bits for nfs4_state->flags */ 1564ce79717STrond Myklebust enum { 1574ce79717STrond Myklebust LK_STATE_IN_USE, 158003707c7STrond Myklebust NFS_DELEGATED_STATE, /* Current stateid is delegation */ 15992b40e93STrond Myklebust NFS_OPEN_STATE, /* OPEN stateid is set */ 160003707c7STrond Myklebust NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ 161003707c7STrond Myklebust NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ 162003707c7STrond Myklebust NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ 163b79a4a1bSTrond Myklebust NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ 164b79a4a1bSTrond Myklebust NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ 1658e469ebdSTrond Myklebust NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ 1665d422301STrond Myklebust NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ 1674ce79717STrond Myklebust }; 1684ce79717STrond Myklebust 1694ce79717STrond Myklebust struct nfs4_state { 1704ce79717STrond Myklebust struct list_head open_states; /* List of states for the same state_owner */ 1714ce79717STrond Myklebust struct list_head inode_states; /* List of states for the same inode */ 1724ce79717STrond Myklebust struct list_head lock_states; /* List of subservient lock stateids */ 1734ce79717STrond Myklebust 1744ce79717STrond Myklebust struct nfs4_state_owner *owner; /* Pointer to the open owner */ 1754ce79717STrond Myklebust struct inode *inode; /* Pointer to the inode */ 1764ce79717STrond Myklebust 1774ce79717STrond Myklebust unsigned long flags; /* Do we hold any locks? */ 1788d0a8a9dSTrond Myklebust spinlock_t state_lock; /* Protects the lock_states list */ 1794ce79717STrond Myklebust 1808bda4e4cSTrond Myklebust seqlock_t seqlock; /* Protects the stateid/open_stateid */ 181003707c7STrond Myklebust nfs4_stateid stateid; /* Current stateid: may be delegation */ 182003707c7STrond Myklebust nfs4_stateid open_stateid; /* OPEN stateid */ 1834ce79717STrond Myklebust 1848bda4e4cSTrond Myklebust /* The following 3 fields are protected by owner->so_lock */ 185003707c7STrond Myklebust unsigned int n_rdonly; /* Number of read-only references */ 186003707c7STrond Myklebust unsigned int n_wronly; /* Number of write-only references */ 187003707c7STrond Myklebust unsigned int n_rdwr; /* Number of read/write references */ 188dc0b027dSTrond Myklebust fmode_t state; /* State on the server (R,W, or RW) */ 1894ce79717STrond Myklebust atomic_t count; 1904ce79717STrond Myklebust }; 1914ce79717STrond Myklebust 1924ce79717STrond Myklebust 1934ce79717STrond Myklebust struct nfs4_exception { 1944ce79717STrond Myklebust long timeout; 1954ce79717STrond Myklebust int retry; 1969e33bed5STrond Myklebust struct nfs4_state *state; 1973114ea7aSTrond Myklebust struct inode *inode; 1984ce79717STrond Myklebust }; 1994ce79717STrond Myklebust 2004ce79717STrond Myklebust struct nfs4_state_recovery_ops { 2017eff03aeSTrond Myklebust int owner_flag_bit; 202b79a4a1bSTrond Myklebust int state_flag_bit; 2034ce79717STrond Myklebust int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); 2044ce79717STrond Myklebust int (*recover_lock)(struct nfs4_state *, struct file_lock *); 205591d71cbSAndy Adamson int (*establish_clid)(struct nfs_client *, struct rpc_cred *); 206965e9c23STrond Myklebust int (*reclaim_complete)(struct nfs_client *, struct rpc_cred *); 20705f4c350SChuck Lever int (*detect_trunking)(struct nfs_client *, struct nfs_client **, 20805f4c350SChuck Lever struct rpc_cred *); 2094ce79717STrond Myklebust }; 2104ce79717STrond Myklebust 21129fba38bSBenny Halevy struct nfs4_state_maintenance_ops { 2122f60ea6bSTrond Myklebust int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); 213a7b72103SAndy Adamson struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); 2148e69514fSBenny Halevy int (*renew_lease)(struct nfs_client *, struct rpc_cred *); 21529fba38bSBenny Halevy }; 21629fba38bSBenny Halevy 217ec011fe8SChuck Lever struct nfs4_mig_recovery_ops { 218b03d735bSChuck Lever int (*get_locations)(struct inode *, struct nfs4_fs_locations *, 219b03d735bSChuck Lever struct page *, struct rpc_cred *); 22044c99933SChuck Lever int (*fsid_present)(struct inode *, struct rpc_cred *); 221ec011fe8SChuck Lever }; 222ec011fe8SChuck Lever 223f786aa90SAl Viro extern const struct dentry_operations nfs4_dentry_operations; 22473a79706SBryan Schumaker 22573a79706SBryan Schumaker /* dir.c */ 22673a79706SBryan Schumaker int nfs_atomic_open(struct inode *, struct dentry *, struct file *, 22773a79706SBryan Schumaker unsigned, umode_t, int *); 2286b3b5496SJ. Bruce Fields 2291ae811eeSbjschuma@gmail.com /* super.c */ 2301ae811eeSbjschuma@gmail.com extern struct file_system_type nfs4_fs_type; 2311ae811eeSbjschuma@gmail.com 23272de53ecSBryan Schumaker /* nfs4namespace.c */ 23372de53ecSBryan Schumaker struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *); 234281cad46SBryan Schumaker struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *, 235281cad46SBryan Schumaker struct nfs_fh *, struct nfs_fattr *); 236800c06a5SChuck Lever int nfs4_replace_transport(struct nfs_server *server, 237800c06a5SChuck Lever const struct nfs4_fs_locations *locations); 23872de53ecSBryan Schumaker 2394ce79717STrond Myklebust /* nfs4proc.c */ 240bb8b27e5STrond Myklebust extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); 241bb8b27e5STrond Myklebust extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); 2425e6b1990STrond Myklebust extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); 2432cf047c9STrond Myklebust extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred); 2444d643d1dSAndy Adamson extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred); 24566245539STrond Myklebust extern int nfs4_destroy_clientid(struct nfs_client *clp); 246591d71cbSAndy Adamson extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); 2474d643d1dSAndy Adamson extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); 2481f7977c1STrond Myklebust extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait); 24955a97593STrond Myklebust extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); 250f05d147fSBryan Schumaker extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, 251f05d147fSBryan Schumaker struct nfs4_fs_locations *, struct page *); 252b03d735bSChuck Lever extern int nfs4_proc_get_locations(struct inode *, struct nfs4_fs_locations *, 253b03d735bSChuck Lever struct page *page, struct rpc_cred *); 25444c99933SChuck Lever extern int nfs4_proc_fsid_present(struct inode *, struct rpc_cred *); 255f05d147fSBryan Schumaker extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, struct qstr *, 256f05d147fSBryan Schumaker struct nfs_fh *, struct nfs_fattr *); 25772de53ecSBryan Schumaker extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); 25864c2ce8bSAneesh Kumar K.V extern const struct xattr_handler *nfs4_xattr_handlers[]; 2595521abfdSTrond Myklebust extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, 2609b206149STrond Myklebust const struct nfs_open_context *ctx, 2619b206149STrond Myklebust const struct nfs_lock_context *l_ctx, 2629b206149STrond Myklebust fmode_t fmode); 2634ce79717STrond Myklebust 264557134a3SAndy Adamson #if defined(CONFIG_NFS_V4_1) 265035168abSTrond Myklebust static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) 266035168abSTrond Myklebust { 267035168abSTrond Myklebust return server->nfs_client->cl_session; 268035168abSTrond Myklebust } 269035168abSTrond Myklebust 270dc70d7b3SAndy Adamson extern int nfs41_setup_sequence(struct nfs4_session *session, 271dc70d7b3SAndy Adamson struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, 2729d12b216STrond Myklebust struct rpc_task *task); 273848f5bdaSTrond Myklebust extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); 274848f5bdaSTrond Myklebust extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); 2759430fb6bSRicardo Labiaga extern int nfs4_proc_get_lease_time(struct nfs_client *clp, 2769430fb6bSRicardo Labiaga struct nfs_fsinfo *fsinfo); 277863a3c6cSAndy Adamson extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, 278ef311537SAndy Adamson bool sync); 27994de8b27SAndy Adamson 28094de8b27SAndy Adamson static inline bool 28194de8b27SAndy Adamson is_ds_only_client(struct nfs_client *clp) 28294de8b27SAndy Adamson { 28394de8b27SAndy Adamson return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == 28494de8b27SAndy Adamson EXCHGID4_FLAG_USE_PNFS_DS; 28594de8b27SAndy Adamson } 286d83217c1SAndy Adamson 287d83217c1SAndy Adamson static inline bool 288d83217c1SAndy Adamson is_ds_client(struct nfs_client *clp) 289d83217c1SAndy Adamson { 290d83217c1SAndy Adamson return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; 291d83217c1SAndy Adamson } 292ab4c2361SWeston Andros Adamson 2938c21c62cSWeston Andros Adamson static inline bool 2948c21c62cSWeston Andros Adamson _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, 295ab4c2361SWeston Andros Adamson struct rpc_clnt **clntp, struct rpc_message *msg) 296ab4c2361SWeston Andros Adamson { 297ab4c2361SWeston Andros Adamson struct rpc_cred *newcred = NULL; 298ab4c2361SWeston Andros Adamson rpc_authflavor_t flavor; 299ab4c2361SWeston Andros Adamson 300ab4c2361SWeston Andros Adamson if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { 301ab4c2361SWeston Andros Adamson spin_lock(&clp->cl_lock); 302ab4c2361SWeston Andros Adamson if (clp->cl_machine_cred != NULL) 303ade33ff5SWeston Andros Adamson /* don't call get_rpccred on the machine cred - 304ade33ff5SWeston Andros Adamson * a reference will be held for life of clp */ 305ade33ff5SWeston Andros Adamson newcred = clp->cl_machine_cred; 306ab4c2361SWeston Andros Adamson spin_unlock(&clp->cl_lock); 307ab4c2361SWeston Andros Adamson msg->rpc_cred = newcred; 308ab4c2361SWeston Andros Adamson 309ab4c2361SWeston Andros Adamson flavor = clp->cl_rpcclient->cl_auth->au_flavor; 310312cd958SWeston Andros Adamson WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I && 311ab4c2361SWeston Andros Adamson flavor != RPC_AUTH_GSS_KRB5P); 312ab4c2361SWeston Andros Adamson *clntp = clp->cl_rpcclient; 3138c21c62cSWeston Andros Adamson 3148c21c62cSWeston Andros Adamson return true; 315ab4c2361SWeston Andros Adamson } 3168c21c62cSWeston Andros Adamson return false; 3178c21c62cSWeston Andros Adamson } 3188c21c62cSWeston Andros Adamson 3198c21c62cSWeston Andros Adamson /* 3208c21c62cSWeston Andros Adamson * Function responsible for determining if an rpc_message should use the 3218c21c62cSWeston Andros Adamson * machine cred under SP4_MACH_CRED and if so switching the credential and 3228c21c62cSWeston Andros Adamson * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). 3238c21c62cSWeston Andros Adamson * Should be called before rpc_call_sync/rpc_call_async. 3248c21c62cSWeston Andros Adamson */ 3258c21c62cSWeston Andros Adamson static inline void 3268c21c62cSWeston Andros Adamson nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, 3278c21c62cSWeston Andros Adamson struct rpc_clnt **clntp, struct rpc_message *msg) 3288c21c62cSWeston Andros Adamson { 3298c21c62cSWeston Andros Adamson _nfs4_state_protect(clp, sp4_mode, clntp, msg); 3308c21c62cSWeston Andros Adamson } 3318c21c62cSWeston Andros Adamson 3328c21c62cSWeston Andros Adamson /* 3338c21c62cSWeston Andros Adamson * Special wrapper to nfs4_state_protect for write. 3348c21c62cSWeston Andros Adamson * If WRITE can use machine cred but COMMIT cannot, make sure all writes 3358c21c62cSWeston Andros Adamson * that use machine cred use NFS_FILE_SYNC. 3368c21c62cSWeston Andros Adamson */ 3378c21c62cSWeston Andros Adamson static inline void 3388c21c62cSWeston Andros Adamson nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, 3398c21c62cSWeston Andros Adamson struct rpc_message *msg, struct nfs_write_data *wdata) 3408c21c62cSWeston Andros Adamson { 3418c21c62cSWeston Andros Adamson if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && 3428c21c62cSWeston Andros Adamson !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) 3438c21c62cSWeston Andros Adamson wdata->args.stable = NFS_FILE_SYNC; 344ab4c2361SWeston Andros Adamson } 345fbcd4abcSAndy Adamson #else /* CONFIG_NFS_v4_1 */ 346035168abSTrond Myklebust static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) 347035168abSTrond Myklebust { 348035168abSTrond Myklebust return NULL; 349035168abSTrond Myklebust } 350035168abSTrond Myklebust 35194de8b27SAndy Adamson static inline bool 35294de8b27SAndy Adamson is_ds_only_client(struct nfs_client *clp) 35394de8b27SAndy Adamson { 35494de8b27SAndy Adamson return false; 35594de8b27SAndy Adamson } 356d83217c1SAndy Adamson 357d83217c1SAndy Adamson static inline bool 358d83217c1SAndy Adamson is_ds_client(struct nfs_client *clp) 359d83217c1SAndy Adamson { 360d83217c1SAndy Adamson return false; 361d83217c1SAndy Adamson } 362ab4c2361SWeston Andros Adamson 363ab4c2361SWeston Andros Adamson static inline void 364ab4c2361SWeston Andros Adamson nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, 365ab4c2361SWeston Andros Adamson struct rpc_clnt **clntp, struct rpc_message *msg) 366ab4c2361SWeston Andros Adamson { 367ab4c2361SWeston Andros Adamson } 3688c21c62cSWeston Andros Adamson 3698c21c62cSWeston Andros Adamson static inline void 3708c21c62cSWeston Andros Adamson nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, 3718c21c62cSWeston Andros Adamson struct rpc_message *msg, struct nfs_write_data *wdata) 3728c21c62cSWeston Andros Adamson { 3738c21c62cSWeston Andros Adamson } 374557134a3SAndy Adamson #endif /* CONFIG_NFS_V4_1 */ 3754ce79717STrond Myklebust 37697dc1359STrond Myklebust extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; 37729fba38bSBenny Halevy 3781549210fSTrond Myklebust extern const u32 nfs4_fattr_bitmap[3]; 379a09df2caSDavid Quigley extern const u32 nfs4_statfs_bitmap[3]; 380a09df2caSDavid Quigley extern const u32 nfs4_pathconf_bitmap[3]; 381dae100c2SFred Isaman extern const u32 nfs4_fsinfo_bitmap[3]; 382a09df2caSDavid Quigley extern const u32 nfs4_fs_locations_bitmap[3]; 3834ce79717STrond Myklebust 384abf79bb3SChuck Lever void nfs40_shutdown_client(struct nfs_client *); 385abf79bb3SChuck Lever void nfs41_shutdown_client(struct nfs_client *); 386abf79bb3SChuck Lever int nfs40_init_client(struct nfs_client *); 387abf79bb3SChuck Lever int nfs41_init_client(struct nfs_client *); 388cdb7ecedSBryan Schumaker void nfs4_free_client(struct nfs_client *); 389cdb7ecedSBryan Schumaker 3906663ee7fSBryan Schumaker struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); 3916663ee7fSBryan Schumaker 3924ce79717STrond Myklebust /* nfs4renewd.c */ 393adfa6f98SDavid Howells extern void nfs4_schedule_state_renewal(struct nfs_client *); 3944ce79717STrond Myklebust extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); 395adfa6f98SDavid Howells extern void nfs4_kill_renewd(struct nfs_client *); 39665f27f38SDavid Howells extern void nfs4_renew_state(struct work_struct *); 3974ce79717STrond Myklebust 3984ce79717STrond Myklebust /* nfs4state.c */ 39973d8bde5SChuck Lever struct rpc_cred *nfs4_get_clid_cred(struct nfs_client *clp); 400fe20d7d5STrond Myklebust struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); 4016dc9d57aSTrond Myklebust struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); 40205f4c350SChuck Lever int nfs4_discover_server_trunking(struct nfs_client *clp, 40305f4c350SChuck Lever struct nfs_client **); 40405f4c350SChuck Lever int nfs40_discover_server_trunking(struct nfs_client *clp, 40505f4c350SChuck Lever struct nfs_client **, struct rpc_cred *); 406a7b72103SAndy Adamson #if defined(CONFIG_NFS_V4_1) 40705f4c350SChuck Lever int nfs41_discover_server_trunking(struct nfs_client *clp, 40805f4c350SChuck Lever struct nfs_client **, struct rpc_cred *); 4099f594791STrond Myklebust extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); 410ac074835STrond Myklebust extern void nfs41_server_notify_target_slotid_update(struct nfs_client *clp); 411c10e4498STrond Myklebust extern void nfs41_server_notify_highest_slotid_update(struct nfs_client *clp); 4125d63360dSTrond Myklebust 4130400a6b0STrond Myklebust #else 4149f594791STrond Myklebust static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) 4150400a6b0STrond Myklebust { 4160400a6b0STrond Myklebust } 417a7b72103SAndy Adamson #endif /* CONFIG_NFS_V4_1 */ 4184ce79717STrond Myklebust 419d1e284d5STrond Myklebust extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); 4204ce79717STrond Myklebust extern void nfs4_put_state_owner(struct nfs4_state_owner *); 4210aaaf5c4SChuck Lever extern void nfs4_purge_state_owners(struct nfs_server *); 4224ce79717STrond Myklebust extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); 4234ce79717STrond Myklebust extern void nfs4_put_open_state(struct nfs4_state *); 424643168c2SAl Viro extern void nfs4_close_state(struct nfs4_state *, fmode_t); 425643168c2SAl Viro extern void nfs4_close_sync(struct nfs4_state *, fmode_t); 426dc0b027dSTrond Myklebust extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); 427a1d0b5eeSTrond Myklebust extern void nfs_inode_find_state_and_recover(struct inode *inode, 428a1d0b5eeSTrond Myklebust const nfs4_stateid *stateid); 4290400a6b0STrond Myklebust extern void nfs4_schedule_lease_recovery(struct nfs_client *); 43033021279STrond Myklebust extern int nfs4_wait_clnt_recover(struct nfs_client *clp); 43133021279STrond Myklebust extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); 432b0d3ded1STrond Myklebust extern void nfs4_schedule_state_manager(struct nfs_client *); 433042b60beSTrond Myklebust extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); 4345d422301STrond Myklebust extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); 435c9fdeb28SChuck Lever extern int nfs4_schedule_migration_recovery(const struct nfs_server *); 436b7f7a66eSChuck Lever extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *); 4370629e370SAlexandros Batsakis extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags); 43878fe0f41SWeston Andros Adamson extern void nfs41_handle_server_scope(struct nfs_client *, 43979d4e1f0SChuck Lever struct nfs41_server_scope **); 440faf5f49cSTrond Myklebust extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); 4418d0a8a9dSTrond Myklebust extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); 4425521abfdSTrond Myklebust extern int nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *, 4432a369153STrond Myklebust fmode_t, const struct nfs_lockowner *); 4444ce79717STrond Myklebust 4458535b2beSTrond Myklebust extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); 446cee54fc9STrond Myklebust extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); 447cee54fc9STrond Myklebust extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); 448cee54fc9STrond Myklebust extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); 44972211dbeSTrond Myklebust extern void nfs_release_seqid(struct nfs_seqid *seqid); 450cee54fc9STrond Myklebust extern void nfs_free_seqid(struct nfs_seqid *seqid); 451cee54fc9STrond Myklebust 4525ae67c4fSTrond Myklebust extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); 453cf470c3eSTrond Myklebust 4544ce79717STrond Myklebust extern const nfs4_stateid zero_stateid; 4554ce79717STrond Myklebust 456129d1977SBryan Schumaker /* nfs4super.c */ 457fbdefd64SBryan Schumaker struct nfs_mount_info; 458ab7017a3SBryan Schumaker extern struct nfs_subversion nfs_v4; 459ff9099f2SBryan Schumaker struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); 460fac1e8e4SBryan Schumaker extern bool nfs4_disable_idmapping; 461fac1e8e4SBryan Schumaker extern unsigned short max_session_slots; 462fac1e8e4SBryan Schumaker extern unsigned short send_implementation_id; 463f6de7a39STrond Myklebust extern bool recover_lost_locks; 46489d77c8fSBryan Schumaker 4656f2ea7f2SChuck Lever #define NFS4_CLIENT_ID_UNIQ_LEN (64) 4666f2ea7f2SChuck Lever extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; 4676f2ea7f2SChuck Lever 468466bfe7fSBryan Schumaker /* nfs4sysctl.c */ 469466bfe7fSBryan Schumaker #ifdef CONFIG_SYSCTL 470466bfe7fSBryan Schumaker int nfs4_register_sysctl(void); 471466bfe7fSBryan Schumaker void nfs4_unregister_sysctl(void); 472466bfe7fSBryan Schumaker #else 473466bfe7fSBryan Schumaker static inline int nfs4_register_sysctl(void) 474466bfe7fSBryan Schumaker { 475466bfe7fSBryan Schumaker return 0; 476466bfe7fSBryan Schumaker } 477466bfe7fSBryan Schumaker 4780add3e85SRandy Dunlap static inline void nfs4_unregister_sysctl(void) 479466bfe7fSBryan Schumaker { 480466bfe7fSBryan Schumaker } 481466bfe7fSBryan Schumaker #endif 482466bfe7fSBryan Schumaker 4834ce79717STrond Myklebust /* nfs4xdr.c */ 4844ce79717STrond Myklebust extern struct rpc_procinfo nfs4_procedures[]; 4854ce79717STrond Myklebust 4864ce79717STrond Myklebust struct nfs4_mount_data; 4874ce79717STrond Myklebust 4884ce79717STrond Myklebust /* callback_xdr.c */ 4894ce79717STrond Myklebust extern struct svc_version nfs4_callback_version1; 49007bccc2dSAlexandros Batsakis extern struct svc_version nfs4_callback_version4; 4914ce79717STrond Myklebust 492f597c537STrond Myklebust static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) 493f597c537STrond Myklebust { 4942d2f24adSTrond Myklebust memcpy(dst, src, sizeof(*dst)); 495f597c537STrond Myklebust } 496f597c537STrond Myklebust 497f597c537STrond Myklebust static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) 498f597c537STrond Myklebust { 4992d2f24adSTrond Myklebust return memcmp(dst, src, sizeof(*dst)) == 0; 500f597c537STrond Myklebust } 501f597c537STrond Myklebust 5025d422301STrond Myklebust static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) 5035d422301STrond Myklebust { 5045d422301STrond Myklebust return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; 5055d422301STrond Myklebust } 5065d422301STrond Myklebust 5074ce79717STrond Myklebust #else 5084ce79717STrond Myklebust 509643168c2SAl Viro #define nfs4_close_state(a, b) do { } while (0) 510643168c2SAl Viro #define nfs4_close_sync(a, b) do { } while (0) 5118c21c62cSWeston Andros Adamson #define nfs4_state_protect(a, b, c, d) do { } while (0) 5128c21c62cSWeston Andros Adamson #define nfs4_state_protect_write(a, b, c, d) do { } while (0) 5134ce79717STrond Myklebust 5144ce79717STrond Myklebust #endif /* CONFIG_NFS_V4 */ 5154ce79717STrond Myklebust #endif /* __LINUX_FS_NFS_NFS4_FS.H */ 516