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Root/branches/iFabio/Chameleon/i386/include/IOKit/storage/IOFDiskPartitionScheme.h

Source at commit 296 created 12 years 10 months ago.
By ifabio, add i386 folder
1/*␊
2 * Copyright (c) 1998-2009 Apple Inc. All rights reserved.␊
3 *␊
4 * @APPLE_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. Please obtain a copy of the License at␊
10 * http://www.opensource.apple.com/apsl/ and read it before using this␊
11 * file.␊
12 * ␊
13 * The Original Code and all software distributed under the License are␊
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊
18 * Please see the License for the specific language governing rights and␊
19 * limitations under the License.␊
20 * ␊
21 * @APPLE_LICENSE_HEADER_END@␊
22 */␊
23␊
24/*␊
25 * This header contains the IOFDiskPartitionScheme class definition.␊
26 */␊
27␊
28#ifndef _IOFDISKPARTITIONSCHEME_H␊
29#define _IOFDISKPARTITIONSCHEME_H␊
30␊
31#include <IOKit/IOTypes.h>␊
32␊
33/*␊
34 * kIOFDiskPartitionSchemeClass is the name of the IOFDiskPartitionScheme class.␊
35 */␊
36␊
37#define kIOFDiskPartitionSchemeClass "IOFDiskPartitionScheme"␊
38␊
39/*␊
40 * FDisk Partition Map Definitions␊
41 */␊
42␊
43#pragma pack(push, 1) /* (enable 8-bit struct packing) */␊
44␊
45/* Structure constants. */␊
46␊
47#define DISK_BLK0SZ sizeof(struct disk_blk0) /* (size of partition map) */␊
48#define DISK_BOOTSZ 446 /* (size of boot code in map) */␊
49#define DISK_NPART 4 /* (number of entries in map) */␊
50␊
51/* Partition map entry. */␊
52␊
53struct fdisk_part␊
54{␊
55 UInt8 bootid; /* (is active boot partition?) */␊
56 UInt8 beghead; /* (beginning head) */␊
57 UInt8 begsect; /* (beginning sector; beginning cylinder, high 2 bits) */␊
58 UInt8 begcyl; /* (beginning cylinder, low 8 bits) */␊
59 UInt8 systid; /* (type) */␊
60 UInt8 endhead; /* (ending head) */␊
61 UInt8 endsect; /* (ending sector; ending cylinder, high 2 bits) */␊
62 UInt8 endcyl; /* (ending cylinder, low 8 bits) */␊
63 UInt32 relsect; /* (block start) */␊
64 UInt32 numsect; /* (block count) */␊
65};␊
66␊
67/* Partition map, as found in block zero of the disk (or extended partition). */␊
68␊
69struct disk_blk0␊
70{␊
71 UInt8 bootcode[DISK_BOOTSZ]; /* (boot code) */␊
72 struct fdisk_part parts[DISK_NPART]; /* (partition entries) */␊
73 UInt16 signature; /* (unique signature for map) */␊
74};␊
75␊
76/* Partition map signature (signature). */␊
77␊
78#define DISK_SIGNATURE 0xAA55␊
79␊
80/* Partition map entry types (systid). */␊
81␊
82#define FDISK_PARTITION_TYPE_01 "DOS_FAT_12"␊
83#define FDISK_PARTITION_TYPE_04 "DOS_FAT_16_S"␊
84#define FDISK_PARTITION_TYPE_06 "DOS_FAT_16"␊
85#define FDISK_PARTITION_TYPE_07 "Windows_NTFS"␊
86#define FDISK_PARTITION_TYPE_0B "DOS_FAT_32"␊
87#define FDISK_PARTITION_TYPE_0C "Windows_FAT_32"␊
88#define FDISK_PARTITION_TYPE_0E "Windows_FAT_16"␊
89#define FDISK_PARTITION_TYPE_42 "Windows_LDM"␊
90#define FDISK_PARTITION_TYPE_82 "Linux_Swap"␊
91#define FDISK_PARTITION_TYPE_83 "Linux"␊
92#define FDISK_PARTITION_TYPE_8E "Linux_LVM"␊
93#define FDISK_PARTITION_TYPE_A5 "FreeBSD"␊
94#define FDISK_PARTITION_TYPE_A6 "OpenBSD"␊
95#define FDISK_PARTITION_TYPE_A7 "Apple_Rhapsody_UFS"␊
96#define FDISK_PARTITION_TYPE_A8 "Apple_UFS"␊
97#define FDISK_PARTITION_TYPE_A9 "NetBSD"␊
98#define FDISK_PARTITION_TYPE_AB "Apple_Boot"␊
99#define FDISK_PARTITION_TYPE_AE "Apple_Encrypted"␊
100#define FDISK_PARTITION_TYPE_AF "Apple_HFS"␊
101#define FDISK_PARTITION_TYPE_FD "Linux_RAID"␊
102␊
103#pragma pack(pop) /* (reset to default struct packing) */␊
104␊
105#ifdef KERNEL␊
106#ifdef __cplusplus␊
107␊
108/*␊
109 * Kernel␊
110 */␊
111␊
112#include <IOKit/storage/IOPartitionScheme.h>␊
113␊
114/*␊
115 * Class␊
116 */␊
117␊
118class IOFDiskPartitionScheme : public IOPartitionScheme␊
119{␊
120 OSDeclareDefaultStructors(IOFDiskPartitionScheme);␊
121␊
122protected:␊
123␊
124 struct ExpansionData { /* */ };␊
125 ExpansionData * _expansionData;␊
126␊
127 OSSet * _partitions; /* (set of media objects representing partitions) */␊
128␊
129 /*␊
130 * Free all of this object's outstanding resources.␊
131 */␊
132␊
133 virtual void free(void);␊
134␊
135 /*␊
136 * Scan the provider media for an FDisk partition map. Returns the set␊
137 * of media objects representing each of the partitions (the retain for␊
138 * the set is passed to the caller), or null should no partition map be␊
139 * found. The default probe score can be adjusted up or down, based on␊
140 * the confidence of the scan.␊
141 */␊
142␊
143 virtual OSSet * scan(SInt32 * score);␊
144␊
145 /*␊
146 * Ask whether the given partition is extended.␊
147 */␊
148␊
149 virtual bool isPartitionExtended(fdisk_part * partition);␊
150␊
151 /*␊
152 * Ask whether the given partition is used.␊
153 */␊
154␊
155 virtual bool isPartitionUsed(fdisk_part * partition);␊
156␊
157 /*␊
158 * Ask whether the given partition appears to be corrupt. A partition that␊
159 * is corrupt will cause the failure of the FDisk partition map recognition␊
160 * altogether.␊
161 */␊
162␊
163 virtual bool isPartitionCorrupt( fdisk_part * partition,␊
164 UInt32 partitionID,␊
165 UInt32 fdiskBlock );␊
166␊
167 /*␊
168 * Ask whether the given partition appears to be invalid. A partition that␊
169 * is invalid will cause it to be skipped in the scan, but will not cause a␊
170 * failure of the FDisk partition map recognition.␊
171 */␊
172␊
173 virtual bool isPartitionInvalid( fdisk_part * partition,␊
174 UInt32 partitionID,␊
175 UInt32 fdiskBlock );␊
176␊
177 /*␊
178 * Instantiate a new media object to represent the given partition.␊
179 */␊
180␊
181 virtual IOMedia * instantiateMediaObject( fdisk_part * partition,␊
182 UInt32 partitionID,␊
183 UInt32 fdiskBlock );␊
184␊
185 /*␊
186 * Allocate a new media object (called from instantiateMediaObject).␊
187 */␊
188␊
189 virtual IOMedia * instantiateDesiredMediaObject( fdisk_part * partition,␊
190 UInt32 partitionID,␊
191 UInt32 fdiskBlock );␊
192␊
193#ifndef __LP64__␊
194 /*␊
195 * Attach the given media object to the device tree plane.␊
196 */␊
197␊
198 virtual bool attachMediaObjectToDeviceTree(IOMedia * media) __attribute__ ((deprecated));␊
199␊
200 /*␊
201 * Detach the given media object from the device tree plane.␊
202 */␊
203␊
204 virtual void detachMediaObjectFromDeviceTree(IOMedia * media) __attribute__ ((deprecated));␊
205#endif /* !__LP64__ */␊
206␊
207public:␊
208␊
209 /*␊
210 * Initialize this object's minimal state.␊
211 */␊
212␊
213 virtual bool init(OSDictionary * properties = 0);␊
214␊
215 /*␊
216 * Determine whether the provider media contains an FDisk partition map.␊
217 */␊
218␊
219 virtual IOService * probe(IOService * provider, SInt32 * score);␊
220␊
221 /*␊
222 * Publish the new media objects which represent our partitions.␊
223 */␊
224␊
225 virtual bool start(IOService * provider);␊
226␊
227 /*␊
228 * Clean up after the media objects we published before terminating.␊
229 */␊
230␊
231 virtual void stop(IOService * provider);␊
232␊
233 /*␊
234 * Request that the provider media be re-scanned for partitions.␊
235 */␊
236␊
237 virtual IOReturn requestProbe(IOOptionBits options);␊
238␊
239#ifdef __LP64__␊
240 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 0);␊
241 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 1);␊
242#else /* !__LP64__ */␊
243 OSMetaClassDeclareReservedUsed(IOFDiskPartitionScheme, 0);␊
244 OSMetaClassDeclareReservedUsed(IOFDiskPartitionScheme, 1);␊
245#endif /* !__LP64__ */␊
246 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 2);␊
247 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 3);␊
248 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 4);␊
249 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 5);␊
250 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 6);␊
251 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 7);␊
252 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 8);␊
253 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 9);␊
254 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 10);␊
255 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 11);␊
256 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 12);␊
257 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 13);␊
258 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 14);␊
259 OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 15);␊
260};␊
261␊
262#endif /* __cplusplus */␊
263#endif /* KERNEL */␊
264#endif /* !_IOFDISKPARTITIONSCHEME_H */␊
265

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