projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/fs/nfs/delegation.h | |
| 3 | * | |
| 4 | * Copyright (c) Trond Myklebust | |
| 5 | * | |
| 6 | * Definitions pertaining to NFS delegated files | |
| 7 | */ | |
| 8 | #ifndef FS_NFS_DELEGATION_H | |
| 9 | #define FS_NFS_DELEGATION_H | |
| 10 | ||
| 89d77c8f | 11 | #if IS_ENABLED(CONFIG_NFS_V4) |
| 1da177e4 LT |
12 | /* |
| 13 | * NFSv4 delegation | |
| 14 | */ | |
| 15 | struct nfs_delegation { | |
| 16 | struct list_head super_list; | |
| 17 | struct rpc_cred *cred; | |
| 18 | struct inode *inode; | |
| 19 | nfs4_stateid stateid; | |
| bd7bf9d5 | 20 | fmode_t type; |
| 1da177e4 | 21 | loff_t maxsize; |
| beb2a5ec | 22 | __u64 change_attr; |
| 15c831bf | 23 | unsigned long flags; |
| 34310430 | 24 | spinlock_t lock; |
| 8383e460 | 25 | struct rcu_head rcu; |
| 1da177e4 LT |
26 | }; |
| 27 | ||
| 515d8611 TM |
28 | enum { |
| 29 | NFS_DELEGATION_NEED_RECLAIM = 0, | |
| 30 | NFS_DELEGATION_RETURN, | |
| b757144f | 31 | NFS_DELEGATION_RETURN_IF_CLOSED, |
| b7391f44 | 32 | NFS_DELEGATION_REFERENCED, |
| d25be546 | 33 | NFS_DELEGATION_RETURNING, |
| 515d8611 TM |
34 | }; |
| 35 | ||
| 1da177e4 LT |
36 | int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); |
| 37 | void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); | |
| 57ec14c5 | 38 | int nfs4_inode_return_delegation(struct inode *inode); |
| e047a10c | 39 | int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid); |
| e6f81075 | 40 | void nfs_inode_return_delegation_noreclaim(struct inode *inode); |
| 1da177e4 | 41 | |
| adfa6f98 | 42 | struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle); |
| eeebf916 | 43 | void nfs_server_return_all_delegations(struct nfs_server *); |
| adfa6f98 | 44 | void nfs_expire_all_delegations(struct nfs_client *clp); |
| 826e0013 | 45 | void nfs_expire_unused_delegation_types(struct nfs_client *clp, fmode_t flags); |
| b7391f44 | 46 | void nfs_expire_unreferenced_delegations(struct nfs_client *clp); |
| d18cc1fd | 47 | int nfs_client_return_marked_delegations(struct nfs_client *clp); |
| d3978bb3 | 48 | int nfs_delegations_present(struct nfs_client *clp); |
| a1d0b5ee | 49 | void nfs_remove_bad_delegation(struct inode *inode); |
| 1da177e4 | 50 | |
| adfa6f98 DH |
51 | void nfs_delegation_mark_reclaim(struct nfs_client *clp); |
| 52 | void nfs_delegation_reap_unclaimed(struct nfs_client *clp); | |
| 1da177e4 LT |
53 | |
| 54 | /* NFSv4 delegation-related procedures */ | |
| e6f81075 | 55 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync); |
| 13437e12 | 56 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid); |
| db4f2e63 | 57 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid); |
| 0032a7a7 | 58 | bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode, fmode_t flags); |
| 1da177e4 | 59 | |
| b7391f44 | 60 | void nfs_mark_delegation_referenced(struct nfs_delegation *delegation); |
| 011e2a7f | 61 | int nfs4_have_delegation(struct inode *inode, fmode_t flags); |
| 15bb3afe | 62 | int nfs4_check_delegation(struct inode *inode, fmode_t flags); |
| cae7a073 | 63 | |
| 1da177e4 LT |
64 | #endif |
| 65 | ||
| b4d2314b TM |
66 | static inline int nfs_have_delegated_attributes(struct inode *inode) |
| 67 | { | |
| 011e2a7f | 68 | return NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) && |
| b4d2314b TM |
69 | !(NFS_I(inode)->cache_validity & NFS_INO_REVAL_FORCED); |
| 70 | } | |
| 71 | ||
| 1da177e4 | 72 | #endif |