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