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Root/branches/rewrite/i386/include/IOKit/storage/IOAppleLabelScheme.h

Source at commit 1129 created 12 years 11 months ago.
By meklort, Change options.o so that it reloads the system config as well. Also change it so that it uses that config for variables (NOTE: if the calue exists in chameleonConfig, it's used instead.
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 IOAppleLabelScheme class definition.␊
26 */␊
27␊
28#ifndef _IOAPPLELABELSCHEME_H␊
29#define _IOAPPLELABELSCHEME_H␊
30␊
31#include <IOKit/IOTypes.h>␊
32␊
33/*␊
34 * kIOAppleLabelSchemeClass is the name of the IOAppleLabelScheme class.␊
35 */␊
36␊
37#define kIOAppleLabelSchemeClass "IOAppleLabelScheme"␊
38␊
39/*␊
40 * Apple Label Scheme Definitions␊
41 */␊
42␊
43#pragma pack(push, 1) /* (enable 8-bit struct packing) */␊
44␊
45/* Label scheme. */␊
46␊
47struct applelabel␊
48{␊
49 uint8_t al_boot0[416]; /* (reserved for boot area) */␊
50 uint16_t al_magic; /* (the magic number) */␊
51 uint16_t al_type; /* (label type) */␊
52 uint32_t al_flags; /* (generic flags) */␊
53 uint64_t al_offset; /* (offset of property area, bytes) */␊
54 uint32_t al_size; /* (size of property area, bytes) */␊
55 uint32_t al_checksum; /* (checksum of property area) */␊
56 uint8_t al_boot1[72]; /* (reserved for boot area) */␊
57};␊
58␊
59/* Label scheme signature (al_magic). */␊
60␊
61#define AL_MAGIC 0x414C␊
62␊
63/* Label scheme version (al_type). */␊
64␊
65#define AL_TYPE_DEFAULT 0x0000␊
66␊
67/* Label scheme flags (al_flags). */␊
68␊
69#define AL_FLAG_DEFAULT 0x00000000␊
70␊
71#pragma pack(pop) /* (reset to default struct packing) */␊
72␊
73#ifdef KERNEL␊
74#ifdef __cplusplus␊
75␊
76/*␊
77 * Kernel␊
78 */␊
79␊
80#include <IOKit/storage/IOFilterScheme.h>␊
81␊
82/*␊
83 * Class␊
84 */␊
85␊
86class IOAppleLabelScheme : public IOFilterScheme␊
87{␊
88 OSDeclareDefaultStructors(IOAppleLabelScheme);␊
89␊
90protected:␊
91␊
92 struct ExpansionData { /* */ };␊
93 ExpansionData * _expansionData;␊
94␊
95 IOMedia * _content;␊
96␊
97 /*␊
98 * Free all of this object's outstanding resources.␊
99 */␊
100␊
101 virtual void free(void);␊
102␊
103 /*␊
104 * Scan the provider media for an Apple label scheme.␊
105 */␊
106␊
107 virtual IOMedia * scan(SInt32 * score);␊
108␊
109 /*␊
110 * Ask whether the given content appears to be corrupt.␊
111 */␊
112␊
113 virtual bool isContentCorrupt(OSDictionary * properties);␊
114␊
115 /*␊
116 * Ask whether the given content appears to be invalid.␊
117 */␊
118␊
119 virtual bool isContentInvalid(OSDictionary * properties);␊
120␊
121 /*␊
122 * Instantiate a new media object to represent the given content.␊
123 */␊
124␊
125 virtual IOMedia * instantiateMediaObject(OSDictionary * properties);␊
126␊
127 /*␊
128 * Allocate a new media object (called from instantiateMediaObject).␊
129 */␊
130␊
131 virtual IOMedia * instantiateDesiredMediaObject(OSDictionary * properties);␊
132␊
133 /*␊
134 * Attach the given media object to the device tree plane.␊
135 */␊
136␊
137 virtual bool attachMediaObjectToDeviceTree(IOMedia * media);␊
138␊
139 /*␊
140 * Detach the given media object from the device tree plane.␊
141 */␊
142␊
143 virtual void detachMediaObjectFromDeviceTree(IOMedia * media);␊
144␊
145public:␊
146␊
147 /*␊
148 * Initialize this object's minimal state.␊
149 */␊
150␊
151 virtual bool init(OSDictionary * properties = 0);␊
152␊
153 /*␊
154 * Determine whether the provider media contains an Apple label scheme.␊
155 */␊
156␊
157 virtual IOService * probe(IOService * provider, SInt32 * score);␊
158␊
159 /*␊
160 * Publish the new media object which represents our content.␊
161 */␊
162␊
163 virtual bool start(IOService * provider);␊
164␊
165 /*␊
166 * Clean up after the media object we published before terminating.␊
167 */␊
168␊
169 virtual void stop(IOService * provider);␊
170␊
171 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 0);␊
172 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 1);␊
173 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 2);␊
174 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 3);␊
175 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 4);␊
176 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 5);␊
177 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 6);␊
178 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 7);␊
179 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 8);␊
180 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 9);␊
181 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 10);␊
182 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 11);␊
183 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 12);␊
184 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 13);␊
185 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 14);␊
186 OSMetaClassDeclareReservedUnused(IOAppleLabelScheme, 15);␊
187};␊
188␊
189#endif /* __cplusplus */␊
190#endif /* KERNEL */␊
191#endif /* !_IOAPPLELABELSCHEME_H */␊
192

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Revision: 1129