/* * Copyright (c) 1998-2012 Apple Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * This header contains the IOFDiskPartitionScheme class definition. */ #ifndef _IOFDISKPARTITIONSCHEME_H #define _IOFDISKPARTITIONSCHEME_H #include /* * kIOFDiskPartitionSchemeClass is the name of the IOFDiskPartitionScheme class. */ #define kIOFDiskPartitionSchemeClass "IOFDiskPartitionScheme" /* * FDisk Partition Map Definitions */ #pragma pack(push, 1) /* (enable 8-bit struct packing) */ /* Structure constants. */ #define DISK_BLK0SZ sizeof(struct disk_blk0) /* (size of partition map) */ #define DISK_BOOTSZ 446 /* (size of boot code in map) */ #define DISK_NPART 4 /* (number of entries in map) */ /* Partition map entry. */ struct fdisk_part { UInt8 bootid; /* (is active boot partition?) */ UInt8 beghead; /* (beginning head) */ UInt8 begsect; /* (beginning sector; beginning cylinder, high 2 bits) */ UInt8 begcyl; /* (beginning cylinder, low 8 bits) */ UInt8 systid; /* (type) */ UInt8 endhead; /* (ending head) */ UInt8 endsect; /* (ending sector; ending cylinder, high 2 bits) */ UInt8 endcyl; /* (ending cylinder, low 8 bits) */ UInt32 relsect; /* (block start) */ UInt32 numsect; /* (block count) */ }; /* Partition map, as found in block zero of the disk (or extended partition). */ struct disk_blk0 { UInt8 bootcode[DISK_BOOTSZ]; /* (boot code) */ struct fdisk_part parts[DISK_NPART]; /* (partition entries) */ UInt16 signature; /* (unique signature for map) */ }; /* Partition map signature (signature). */ #define DISK_SIGNATURE 0xAA55 /* Partition map entry types (systid). */ #define FDISK_PARTITION_TYPE_01 "DOS_FAT_12" #define FDISK_PARTITION_TYPE_04 "DOS_FAT_16_S" #define FDISK_PARTITION_TYPE_06 "DOS_FAT_16" #define FDISK_PARTITION_TYPE_07 "Windows_NTFS" #define FDISK_PARTITION_TYPE_0B "DOS_FAT_32" #define FDISK_PARTITION_TYPE_0C "Windows_FAT_32" #define FDISK_PARTITION_TYPE_0E "Windows_FAT_16" #define FDISK_PARTITION_TYPE_42 "Windows_LDM" #define FDISK_PARTITION_TYPE_82 "Linux_Swap" #define FDISK_PARTITION_TYPE_83 "Linux" #define FDISK_PARTITION_TYPE_8E "Linux_LVM" #define FDISK_PARTITION_TYPE_A5 "FreeBSD" #define FDISK_PARTITION_TYPE_A6 "OpenBSD" #define FDISK_PARTITION_TYPE_A7 "Apple_Rhapsody_UFS" #define FDISK_PARTITION_TYPE_A8 "Apple_UFS" #define FDISK_PARTITION_TYPE_A9 "NetBSD" #define FDISK_PARTITION_TYPE_AB "Apple_Boot" #define FDISK_PARTITION_TYPE_AE "Apple_Encrypted" #define FDISK_PARTITION_TYPE_AF "Apple_HFS" #define FDISK_PARTITION_TYPE_FD "Linux_RAID" #pragma pack(pop) /* (reset to default struct packing) */ #ifdef KERNEL #ifdef __cplusplus /* * Kernel */ #include /* * Class */ class IOFDiskPartitionScheme : public IOPartitionScheme { OSDeclareDefaultStructors(IOFDiskPartitionScheme); protected: struct ExpansionData { /* */ }; ExpansionData * _expansionData; OSSet * _partitions; /* (set of media objects representing partitions) */ /* * Free all of this object's outstanding resources. */ virtual void free(void); /* * Scan the provider media for an FDisk partition map. Returns the set * of media objects representing each of the partitions (the retain for * the set is passed to the caller), or null should no partition map be * found. The default probe score can be adjusted up or down, based on * the confidence of the scan. */ virtual OSSet * scan(SInt32 * score); /* * Ask whether the given partition is extended. */ virtual bool isPartitionExtended(fdisk_part * partition); /* * Ask whether the given partition is used. */ virtual bool isPartitionUsed(fdisk_part * partition); /* * Ask whether the given partition appears to be corrupt. A partition that * is corrupt will cause the failure of the FDisk partition map recognition * altogether. */ virtual bool isPartitionCorrupt( fdisk_part * partition, UInt32 partitionID, UInt32 fdiskBlock ); /* * Ask whether the given partition appears to be invalid. A partition that * is invalid will cause it to be skipped in the scan, but will not cause a * failure of the FDisk partition map recognition. */ virtual bool isPartitionInvalid( fdisk_part * partition, UInt32 partitionID, UInt32 fdiskBlock ); /* * Instantiate a new media object to represent the given partition. */ virtual IOMedia * instantiateMediaObject( fdisk_part * partition, UInt32 partitionID, UInt32 fdiskBlock ); /* * Allocate a new media object (called from instantiateMediaObject). */ virtual IOMedia * instantiateDesiredMediaObject( fdisk_part * partition, UInt32 partitionID, UInt32 fdiskBlock ); #ifndef __LP64__ /* * Attach the given media object to the device tree plane. */ virtual bool attachMediaObjectToDeviceTree(IOMedia * media) __attribute__ ((deprecated)); /* * Detach the given media object from the device tree plane. */ virtual void detachMediaObjectFromDeviceTree(IOMedia * media) __attribute__ ((deprecated)); #endif /* !__LP64__ */ public: /* * Initialize this object's minimal state. */ virtual bool init(OSDictionary * properties = 0); /* * Determine whether the provider media contains an FDisk partition map. */ virtual IOService * probe(IOService * provider, SInt32 * score); /* * Publish the new media objects which represent our partitions. */ virtual bool start(IOService * provider); /* * Clean up after the media objects we published before terminating. */ virtual void stop(IOService * provider); /* * Request that the provider media be re-scanned for partitions. */ virtual IOReturn requestProbe(IOOptionBits options); #ifdef __LP64__ OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 0); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 1); #else /* !__LP64__ */ OSMetaClassDeclareReservedUsed(IOFDiskPartitionScheme, 0); OSMetaClassDeclareReservedUsed(IOFDiskPartitionScheme, 1); #endif /* !__LP64__ */ OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 2); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 3); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 4); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 5); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 6); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 7); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 8); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 9); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 10); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 11); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 12); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 13); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 14); OSMetaClassDeclareReservedUnused(IOFDiskPartitionScheme, 15); }; #endif /* __cplusplus */ #endif /* KERNEL */ #endif /* !_IOFDISKPARTITIONSCHEME_H */