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; |
7d160a6c | 21 | unsigned long pagemod_limit; |
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, |
869f9dfa | 34 | NFS_DELEGATION_REVOKED, |
515d8611 TM |
35 | }; |
36 | ||
1da177e4 LT |
37 | int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); |
38 | void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); | |
57ec14c5 | 39 | int nfs4_inode_return_delegation(struct inode *inode); |
e047a10c | 40 | int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid); |
e6f81075 | 41 | void nfs_inode_return_delegation_noreclaim(struct inode *inode); |
1da177e4 | 42 | |
adfa6f98 | 43 | struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle); |
eeebf916 | 44 | void nfs_server_return_all_delegations(struct nfs_server *); |
adfa6f98 | 45 | void nfs_expire_all_delegations(struct nfs_client *clp); |
826e0013 | 46 | void nfs_expire_unused_delegation_types(struct nfs_client *clp, fmode_t flags); |
b7391f44 | 47 | void nfs_expire_unreferenced_delegations(struct nfs_client *clp); |
d18cc1fd | 48 | int nfs_client_return_marked_delegations(struct nfs_client *clp); |
d3978bb3 | 49 | int nfs_delegations_present(struct nfs_client *clp); |
a1d0b5ee | 50 | void nfs_remove_bad_delegation(struct inode *inode); |
1da177e4 | 51 | |
adfa6f98 DH |
52 | void nfs_delegation_mark_reclaim(struct nfs_client *clp); |
53 | void nfs_delegation_reap_unclaimed(struct nfs_client *clp); | |
1da177e4 LT |
54 | |
55 | /* NFSv4 delegation-related procedures */ | |
e6f81075 | 56 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync); |
24311f88 | 57 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid, fmode_t type); |
db4f2e63 | 58 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid); |
abf4e13c | 59 | bool nfs4_copy_delegation_stateid(struct inode *inode, fmode_t flags, nfs4_stateid *dst, struct rpc_cred **cred); |
1da177e4 | 60 | |
b7391f44 | 61 | void nfs_mark_delegation_referenced(struct nfs_delegation *delegation); |
011e2a7f | 62 | int nfs4_have_delegation(struct inode *inode, fmode_t flags); |
15bb3afe | 63 | int nfs4_check_delegation(struct inode *inode, fmode_t flags); |
5445b1fb | 64 | bool nfs4_delegation_flush_on_close(const struct inode *inode); |
cae7a073 | 65 | |
1da177e4 LT |
66 | #endif |
67 | ||
b4d2314b TM |
68 | static inline int nfs_have_delegated_attributes(struct inode *inode) |
69 | { | |
011e2a7f | 70 | return NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) && |
b4d2314b TM |
71 | !(NFS_I(inode)->cache_validity & NFS_INO_REVAL_FORCED); |
72 | } | |
73 | ||
1da177e4 | 74 | #endif |