winioctl.h

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//

typedef enum _MEDIA_TYPE {
    Unknown,                // Format is unknown
    F5_1Pt2_512,            // 5.25", 1.2MB,  512 bytes/sector
    F3_1Pt44_512,           // 3.5",  1.44MB, 512 bytes/sector
    F3_2Pt88_512,           // 3.5",  2.88MB, 512 bytes/sector
    F3_20Pt8_512,           // 3.5",  20.8MB, 512 bytes/sector
    F3_720_512,             // 3.5",  720KB,  512 bytes/sector
    F5_360_512,             // 5.25", 360KB,  512 bytes/sector
    F5_320_512,             // 5.25", 320KB,  512 bytes/sector
    F5_320_1024,            // 5.25", 320KB,  1024 bytes/sector
    F5_180_512,             // 5.25", 180KB,  512 bytes/sector
    F5_160_512,             // 5.25", 160KB,  512 bytes/sector
    RemovableMedia,         // Removable media other than floppy
    FixedMedia,             // Fixed hard disk media
    F3_120M_512,            // 3.5", 120M Floppy
    F3_640_512,             // 3.5" ,  640KB,  512 bytes/sector
    F5_640_512,             // 5.25",  640KB,  512 bytes/sector
    F5_720_512,             // 5.25",  720KB,  512 bytes/sector
    F3_1Pt2_512,            // 3.5" ,  1.2Mb,  512 bytes/sector
    F3_1Pt23_1024,          // 3.5" ,  1.23Mb, 1024 bytes/sector
    F5_1Pt23_1024,          // 5.25",  1.23MB, 1024 bytes/sector
    F3_128Mb_512,           // 3.5" MO 128Mb   512 bytes/sector
    F3_230Mb_512,           // 3.5" MO 230Mb   512 bytes/sector
    F8_256_128              // 8",     256KB,  128 bytes/sector
} MEDIA_TYPE, *PMEDIA_TYPE;

//
// Define the input buffer structure for the driver, when
// it is called with IOCTL_DISK_FORMAT_TRACKS.
//

typedef struct _FORMAT_PARAMETERS {
   MEDIA_TYPE MediaType;
   DWORD StartCylinderNumber;
   DWORD EndCylinderNumber;
   DWORD StartHeadNumber;
   DWORD EndHeadNumber;
} FORMAT_PARAMETERS, *PFORMAT_PARAMETERS;

//
// Define the BAD_TRACK_NUMBER type. An array of elements of this type is
// returned by the driver on IOCTL_DISK_FORMAT_TRACKS requests, to indicate
// what tracks were bad during formatting. The length of that array is
// reported in the `Information' field of the I/O Status Block.
//

typedef WORD   BAD_TRACK_NUMBER;
typedef WORD   *PBAD_TRACK_NUMBER;

//
// Define the input buffer structure for the driver, when
// it is called with IOCTL_DISK_FORMAT_TRACKS_EX.
//

typedef struct _FORMAT_EX_PARAMETERS {
   MEDIA_TYPE MediaType;
   DWORD StartCylinderNumber;
   DWORD EndCylinderNumber;
   DWORD StartHeadNumber;
   DWORD EndHeadNumber;
   WORD   FormatGapLength;
   WORD   SectorsPerTrack;
   WORD   SectorNumber[1];
} FORMAT_EX_PARAMETERS, *PFORMAT_EX_PARAMETERS;

//
// The following structure is returned on an IOCTL_DISK_GET_DRIVE_GEOMETRY
// request and an array of them is returned on an IOCTL_DISK_GET_MEDIA_TYPES
// request.
//

typedef struct _DISK_GEOMETRY {
    LARGE_INTEGER Cylinders;
    MEDIA_TYPE MediaType;
    DWORD TracksPerCylinder;
    DWORD SectorsPerTrack;
    DWORD BytesPerSector;
} DISK_GEOMETRY, *PDISK_GEOMETRY;


//
// This wmi guid returns a DISK_GEOMETRY structure
//
#define WMI_DISK_GEOMETRY_GUID         { 0x25007f51, 0x57c2, 0x11d1, { 0xa5, 0x28, 0x0, 0xa0, 0xc9, 0x6, 0x29, 0x10 } }



//
// The following structure is returned on an IOCTL_DISK_GET_PARTITION_INFO
// and an IOCTL_DISK_GET_DRIVE_LAYOUT request.  It is also used in a request
// to change the drive layout, IOCTL_DISK_SET_DRIVE_LAYOUT.
//

typedef struct _PARTITION_INFORMATION {
    LARGE_INTEGER StartingOffset;
    LARGE_INTEGER PartitionLength;
    DWORD HiddenSectors;
    DWORD PartitionNumber;
    BYTE  PartitionType;
    BOOLEAN BootIndicator;
    BOOLEAN RecognizedPartition;
    BOOLEAN RewritePartition;
} PARTITION_INFORMATION, *PPARTITION_INFORMATION;

//
// The following structure is used to change the partition type of a
// specified disk partition using an IOCTL_DISK_SET_PARTITION_INFO
// request.
//

typedef struct _SET_PARTITION_INFORMATION {
    BYTE  PartitionType;
} SET_PARTITION_INFORMATION, *PSET_PARTITION_INFORMATION;

//
// The following structures is returned on an IOCTL_DISK_GET_DRIVE_LAYOUT
// request and given as input to an IOCTL_DISK_SET_DRIVE_LAYOUT request.
//

typedef struct _DRIVE_LAYOUT_INFORMATION {
    DWORD PartitionCount;
    DWORD Signature;
    PARTITION_INFORMATION PartitionEntry[1];
} DRIVE_LAYOUT_INFORMATION, *PDRIVE_LAYOUT_INFORMATION;

//
// The following structure is passed in on an IOCTL_DISK_VERIFY request.
// The offset and length parameters are both given in bytes.
//

typedef struct _VERIFY_INFORMATION {
    LARGE_INTEGER StartingOffset;
    DWORD Length;
} VERIFY_INFORMATION, *PVERIFY_INFORMATION;

//
// The following structure is passed in on an IOCTL_DISK_REASSIGN_BLOCKS
// request.
//

typedef struct _REASSIGN_BLOCKS {
    WORD   Reserved;
    WORD   Count;
    DWORD BlockNumber[1];
} REASSIGN_BLOCKS, *PREASSIGN_BLOCKS;

#if(_WIN32_WINNT >= 0x0400)
//
// IOCTL_DISK_CONTROLLER_NUMBER returns the controller and disk
// number for the handle.  This is used to determine if a disk
// is attached to the primary or secondary IDE controller.
//

typedef struct _DISK_CONTROLLER_NUMBER {
    DWORD ControllerNumber;
    DWORD DiskNumber;
} DISK_CONTROLLER_NUMBER, *PDISK_CONTROLLER_NUMBER;
#endif /* _WIN32_WINNT >= 0x0400 */

#if(_WIN32_WINNT >= 0x0500)


//
// IOCTL_DISK_SET_CACHE allows the caller to get or set the state of the disk
// read/write caches.
//
// If the structure is provided as the input buffer for the ioctl the read &
// write caches will be enabled or disabled depending on the parameters
// provided.
//
// If the structure is provided as an output buffer for the ioctl the state
// of the read & write caches will be returned. If both input and outut buffers
// are provided the output buffer will contain the cache state BEFORE any
// changes are made
//

typedef enum {
    EqualPriority,
    KeepPrefetchedData,
    KeepReadData
} DISK_CACHE_RETENTION_PRIORITY;


typedef struct _DISK_CACHE_INFORMATION {

    //
    // on return indicates that the device is capable of saving any parameters
    // in non-volatile storage.  On send indicates that the device should
    // save the state in non-volatile storage.
    //

    BOOLEAN ParametersSavable;

    //
    // Indicates whether the write and read caches are enabled.
    //

    BOOLEAN ReadCacheEnabled;
    BOOLEAN WriteCacheEnabled;

    //
    // Controls the likelyhood of data remaining in the cache depending on how
    // it got there.  Data cached from a READ or WRITE operation may be given
    // higher, lower or equal priority to data entered into the cache for other
    // means (like prefetch)
    //

    DISK_CACHE_RETENTION_PRIORITY ReadRetentionPriority;
    DISK_CACHE_RETENTION_PRIORITY WriteRetentionPriority;

    //
    // Requests for a larger number of blocks than this may have prefetching
    // disabled.  If this value is set to 0 prefetch will be disabled.
    //

    WORD   DisablePrefetchTransferLength;

    //
    // If TRUE then ScalarPrefetch (below) will be valid.  If FALSE then
    // the minimum and maximum values should be treated as a block count
    // (BlockPrefetch)
    //

    BOOLEAN PrefetchScalar;

    //
    // Contains the minimum and maximum amount of data which will be
    // will be prefetched into the cache on a disk operation.  This value
    // may either be a scalar multiplier of the transfer length of the request,
    // or an abolute number of disk blocks.  PrefetchScalar (above) indicates
    // which interpretation is used.
    //

    union {
        struct {
            WORD   Minimum;
            WORD   Maximum;

            //
            // The maximum number of blocks which will be prefetched - useful
            // with the scalar limits to set definite upper limits.
            //

            WORD   MaximumBlocks;
        } ScalarPrefetch;

        struct {
            WORD   Minimum;
            WORD   Maximum;
        } BlockPrefetch;
    };

} DISK_CACHE_INFORMATION, *PDISK_CACHE_INFORMATION;

//
// IOCTL_DISK_GROW_PARTITION will update the size of a partition
// by adding sectors to the length. The number of sectors must be
// predetermined by examining PARTITION_INFORMATION.
//

typedef struct _DISK_GROW_PARTITION {
    DWORD PartitionNumber;
    LARGE_INTEGER BytesToGrow;
} DISK_GROW_PARTITION, *PDISK_GROW_PARTITION;
#endif /* _WIN32_WINNT >= 0x0500 */

///////////////////////////////////////////////////////
//                                                   //
// The following structures define disk performance  //
// statistics: specifically the locations of all the //
// reads and writes which have occured on the disk.  //
//                                                   //
// To use these structures, you must issue an IOCTL_ //
// DISK_HIST_STRUCTURE (with a DISK_HISTOGRAM) to    //
// obtain the basic histogram information. The       //
// number of buckets which must allocated is part of //
// this structure. Allocate the required number of   //
// buckets and call an IOCTL_DISK_HIST_DATA to fill  //
// in the data                                       //
//                                                   //
///////////////////////////////////////////////////////

#define HIST_NO_OF_BUCKETS  24

typedef struct _HISTOGRAM_BUCKET {
    DWORD       Reads;
    DWORD       Writes;
} HISTOGRAM_BUCKET, *PHISTOGRAM_BUCKET;

#define HISTOGRAM_BUCKET_SIZE   sizeof(HISTOGRAM_BUCKET)

typedef struct _DISK_HISTOGRAM {
    LARGE_INTEGER   DiskSize;
    LARGE_INTEGER   Start;
    LARGE_INTEGER   End;
    LARGE_INTEGER   Average;
    LARGE_INTEGER   AverageRead;
    LARGE_INTEGER   AverageWrite;
    DWORD           Granularity;
    DWORD           Size;
    DWORD           ReadCount;
    DWORD           WriteCount;
    PHISTOGRAM_BUCKET  Histogram;
} DISK_HISTOGRAM, *PDISK_HISTOGRAM;

#define DISK_HISTOGRAM_SIZE sizeof(DISK_HISTOGRAM)

///////////////////////////////////////////////////////
//                                                   //
// The following structures define disk debugging    //
// capabilities. The IOCTLs are directed to one of   //
// the two disk filter drivers.                      //
//                                                   //
// DISKPERF is a utilty for collecting disk request  //
// statistics.                                       //
//                                                   //
// SIMBAD is a utility for injecting faults in       //
// IO requests to disks.                             //
//                                                   //
///////////////////////////////////////////////////////

//
// The following structure is exchanged on an IOCTL_DISK_GET_PERFORMANCE
// request. This ioctl collects summary disk request statistics used
// in measuring performance.
//

typedef struct _DISK_PERFORMANCE {
        LARGE_INTEGER BytesRead;
        LARGE_INTEGER BytesWritten;
        LARGE_INTEGER ReadTime;
        LARGE_INTEGER WriteTime;
        LARGE_INTEGER IdleTime;
        DWORD ReadCount;
        DWORD WriteCount;
        DWORD QueueDepth;
        DWORD SplitCount;