95 строки
2.9 KiB
C
95 строки
2.9 KiB
C
/* vnode.h: AFS vnode record
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*
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* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_AFS_VNODE_H
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#define _LINUX_AFS_VNODE_H
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#include <linux/fs.h>
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#include "server.h"
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#include "kafstimod.h"
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#include "cache.h"
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#ifdef __KERNEL__
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struct afs_rxfs_fetch_descriptor;
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/*****************************************************************************/
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/*
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* vnode catalogue entry
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*/
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struct afs_cache_vnode
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{
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afs_vnodeid_t vnode_id; /* vnode ID */
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unsigned vnode_unique; /* vnode ID uniquifier */
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afs_dataversion_t data_version; /* data version */
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};
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#ifdef AFS_CACHING_SUPPORT
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extern struct cachefs_index_def afs_vnode_cache_index_def;
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#endif
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/*****************************************************************************/
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/*
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* AFS inode private data
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*/
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struct afs_vnode
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{
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struct inode vfs_inode; /* the VFS's inode record */
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struct afs_volume *volume; /* volume on which vnode resides */
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struct afs_fid fid; /* the file identifier for this inode */
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struct afs_file_status status; /* AFS status info for this file */
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#ifdef AFS_CACHING_SUPPORT
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struct cachefs_cookie *cache; /* caching cookie */
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#endif
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wait_queue_head_t update_waitq; /* status fetch waitqueue */
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unsigned update_cnt; /* number of outstanding ops that will update the
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* status */
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spinlock_t lock; /* waitqueue/flags lock */
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unsigned flags;
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#define AFS_VNODE_CHANGED 0x00000001 /* set if vnode reported changed by callback */
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#define AFS_VNODE_DELETED 0x00000002 /* set if vnode deleted on server */
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#define AFS_VNODE_MOUNTPOINT 0x00000004 /* set if vnode is a mountpoint symlink */
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/* outstanding callback notification on this file */
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struct afs_server *cb_server; /* server that made the current promise */
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struct list_head cb_link; /* link in server's promises list */
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struct list_head cb_hash_link; /* link in master callback hash */
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struct afs_timer cb_timeout; /* timeout on promise */
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unsigned cb_version; /* callback version */
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unsigned cb_expiry; /* callback expiry time */
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afs_callback_type_t cb_type; /* type of callback */
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};
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static inline struct afs_vnode *AFS_FS_I(struct inode *inode)
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{
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return container_of(inode,struct afs_vnode,vfs_inode);
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}
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static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode)
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{
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return &vnode->vfs_inode;
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}
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extern int afs_vnode_fetch_status(struct afs_vnode *vnode);
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extern int afs_vnode_fetch_data(struct afs_vnode *vnode,
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struct afs_rxfs_fetch_descriptor *desc);
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extern int afs_vnode_give_up_callback(struct afs_vnode *vnode);
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extern struct afs_timer_ops afs_vnode_cb_timed_out_ops;
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#endif /* __KERNEL__ */
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#endif /* _LINUX_AFS_VNODE_H */
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