| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |