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1da177e4 LT |
1 | /* vnode.h: AFS vnode record |
2 | * | |
3 | * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #ifndef _LINUX_AFS_VNODE_H | |
13 | #define _LINUX_AFS_VNODE_H | |
14 | ||
15 | #include <linux/fs.h> | |
16 | #include "server.h" | |
17 | #include "kafstimod.h" | |
18 | #include "cache.h" | |
19 | ||
20 | #ifdef __KERNEL__ | |
21 | ||
22 | struct afs_rxfs_fetch_descriptor; | |
23 | ||
24 | /*****************************************************************************/ | |
25 | /* | |
26 | * vnode catalogue entry | |
27 | */ | |
28 | struct afs_cache_vnode | |
29 | { | |
30 | afs_vnodeid_t vnode_id; /* vnode ID */ | |
31 | unsigned vnode_unique; /* vnode ID uniquifier */ | |
32 | afs_dataversion_t data_version; /* data version */ | |
33 | }; | |
34 | ||
35 | #ifdef AFS_CACHING_SUPPORT | |
36 | extern struct cachefs_index_def afs_vnode_cache_index_def; | |
37 | #endif | |
38 | ||
39 | /*****************************************************************************/ | |
40 | /* | |
41 | * AFS inode private data | |
42 | */ | |
43 | struct afs_vnode | |
44 | { | |
45 | struct inode vfs_inode; /* the VFS's inode record */ | |
46 | ||
47 | struct afs_volume *volume; /* volume on which vnode resides */ | |
48 | struct afs_fid fid; /* the file identifier for this inode */ | |
49 | struct afs_file_status status; /* AFS status info for this file */ | |
50 | #ifdef AFS_CACHING_SUPPORT | |
51 | struct cachefs_cookie *cache; /* caching cookie */ | |
52 | #endif | |
53 | ||
54 | wait_queue_head_t update_waitq; /* status fetch waitqueue */ | |
55 | unsigned update_cnt; /* number of outstanding ops that will update the | |
56 | * status */ | |
57 | spinlock_t lock; /* waitqueue/flags lock */ | |
58 | unsigned flags; | |
59 | #define AFS_VNODE_CHANGED 0x00000001 /* set if vnode reported changed by callback */ | |
60 | #define AFS_VNODE_DELETED 0x00000002 /* set if vnode deleted on server */ | |
61 | #define AFS_VNODE_MOUNTPOINT 0x00000004 /* set if vnode is a mountpoint symlink */ | |
62 | ||
63 | /* outstanding callback notification on this file */ | |
64 | struct afs_server *cb_server; /* server that made the current promise */ | |
65 | struct list_head cb_link; /* link in server's promises list */ | |
66 | struct list_head cb_hash_link; /* link in master callback hash */ | |
67 | struct afs_timer cb_timeout; /* timeout on promise */ | |
68 | unsigned cb_version; /* callback version */ | |
69 | unsigned cb_expiry; /* callback expiry time */ | |
70 | afs_callback_type_t cb_type; /* type of callback */ | |
71 | }; | |
72 | ||
73 | static inline struct afs_vnode *AFS_FS_I(struct inode *inode) | |
74 | { | |
75 | return container_of(inode,struct afs_vnode,vfs_inode); | |
76 | } | |
77 | ||
78 | static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) | |
79 | { | |
80 | return &vnode->vfs_inode; | |
81 | } | |
82 | ||
83 | extern int afs_vnode_fetch_status(struct afs_vnode *vnode); | |
84 | ||
85 | extern int afs_vnode_fetch_data(struct afs_vnode *vnode, | |
86 | struct afs_rxfs_fetch_descriptor *desc); | |
87 | ||
88 | extern int afs_vnode_give_up_callback(struct afs_vnode *vnode); | |
89 | ||
90 | extern struct afs_timer_ops afs_vnode_cb_timed_out_ops; | |
91 | ||
92 | #endif /* __KERNEL__ */ | |
93 | ||
94 | #endif /* _LINUX_AFS_VNODE_H */ |