1/*
2 * Copyright (c) 2005-2011 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28#ifndef _HFS_BTREEIO_H_
29#define _HFS_BTREEIO_H_
30
31#include <sys/appleapiopts.h>
32
33#ifdef KERNEL
34#ifdef __APPLE_API_PRIVATE
35
36#include "hfs.h"
37#include "hfscommon/headers/BTreesInternal.h"
38
39/* BTree accessor routines */
40extern OSStatus SetBTreeBlockSize(FileReference vp, ByteCount blockSize,
41				ItemCount minBlockCount);
42
43extern OSStatus GetBTreeBlock(FileReference vp, u_int32_t blockNum,
44				GetBlockOptions options, BlockDescriptor *block);
45
46extern OSStatus ReleaseBTreeBlock(FileReference vp, BlockDescPtr blockPtr,
47				ReleaseBlockOptions options);
48
49extern OSStatus ExtendBTreeFile(FileReference vp, FSSize minEOF, FSSize maxEOF);
50
51extern void ModifyBlockStart(FileReference vp, BlockDescPtr blockPtr);
52
53int hfs_create_attr_btree(struct hfsmount *hfsmp, u_int32_t nodesize, u_int32_t nodecnt);
54
55u_int16_t get_btree_nodesize(struct vnode *vp);
56
57#endif /* __APPLE_API_PRIVATE */
58#endif /* KERNEL */
59#endif /* ! _HFS_BTREEIO_H_ */
60