1/*
2 * ntfs_hash.h - Defines for inode hash structures and operations for the NTFS
3 *		 kernel driver.
4 *
5 * Copyright (c) 2006-2011 Anton Altaparmakov.  All Rights Reserved.
6 * Portions Copyright (c) 2006-2011 Apple Inc.  All Rights Reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright notice,
12 *    this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright notice,
14 *    this list of conditions and the following disclaimer in the documentation
15 *    and/or other materials provided with the distribution.
16 * 3. Neither the name of Apple Inc. ("Apple") nor the names of its
17 *    contributors may be used to endorse or promote products derived from this
18 *    software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * ALTERNATIVELY, provided that this notice and licensing terms are retained in
32 * full, this file may be redistributed and/or modified under the terms of the
33 * GNU General Public License (GPL) Version 2, in which case the provisions of
34 * that version of the GPL will apply to you instead of the license terms
35 * above.  You can obtain a copy of the GPL Version 2 at
36 * http://developer.apple.com/opensource/licenses/gpl-2.txt.
37 */
38
39#ifndef _OSX_NTFS_HASH_H
40#define _OSX_NTFS_HASH_H
41
42#include <sys/cdefs.h>
43#include <sys/errno.h>
44#include <sys/mount.h>
45#include <sys/queue.h>
46
47#include <kern/locks.h>
48
49#include "ntfs_inode.h"
50#include "ntfs_volume.h"
51
52__private_extern__ lck_mtx_t ntfs_inode_hash_lock;
53
54__private_extern__ errno_t ntfs_inode_hash_init(void);
55__private_extern__ void ntfs_inode_hash_deinit(void);
56
57__private_extern__ ntfs_inode *ntfs_inode_hash_lookup(ntfs_volume *vol,
58		const ntfs_attr *na);
59__private_extern__ ntfs_inode *ntfs_inode_hash_get(ntfs_volume *vol,
60		const ntfs_attr *na);
61
62/**
63 * ntfs_inode_hash_rm_nolock - remove an ntfs inode from the ntfs inode hash
64 * @ni:		ntfs inode to remove from the hash
65 *
66 * Remove the ntfs inode @ni from the ntfs inode hash.
67 */
68static inline void ntfs_inode_hash_rm_nolock(ntfs_inode *ni)
69{
70	LIST_REMOVE(ni, hash);
71}
72
73__private_extern__ void ntfs_inode_hash_rm(ntfs_inode *ni);
74
75#endif /* !_OSX_NTFS_HASH_H */
76