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83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
// +build windows
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package vhd
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import "syscall"
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//go:generate go run mksyscall_windows.go -output zvhd.go vhd.go
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//sys createVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, securityDescriptor *uintptr, flags uint32, providerSpecificFlags uint32, parameters *createVirtualDiskParameters, o *syscall.Overlapped, handle *syscall.Handle) (err error) [failretval != 0] = VirtDisk.CreateVirtualDisk
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type virtualStorageType struct {
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DeviceID uint32
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VendorID [16]byte
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}
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const virtualDiskAccessNONE uint32 = 0
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const virtualDiskAccessATTACHRO uint32 = 65536
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const virtualDiskAccessATTACHRW uint32 = 131072
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const virtualDiskAccessDETACH uint32 = 262144
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const virtualDiskAccessGETINFO uint32 = 524288
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const virtualDiskAccessCREATE uint32 = 1048576
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const virtualDiskAccessMETAOPS uint32 = 2097152
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const virtualDiskAccessREAD uint32 = 851968
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const virtualDiskAccessALL uint32 = 4128768
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const virtualDiskAccessWRITABLE uint32 = 3276800
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const createVirtualDiskFlagNone uint32 = 0
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const createVirtualDiskFlagFullPhysicalAllocation uint32 = 1
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const createVirtualDiskFlagPreventWritesToSourceDisk uint32 = 2
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const createVirtualDiskFlagDoNotCopyMetadataFromParent uint32 = 4
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type version2 struct {
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UniqueID [16]byte // GUID
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MaximumSize uint64
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BlockSizeInBytes uint32
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SectorSizeInBytes uint32
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ParentPath *uint16 // string
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SourcePath *uint16 // string
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OpenFlags uint32
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ParentVirtualStorageType virtualStorageType
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SourceVirtualStorageType virtualStorageType
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ResiliencyGUID [16]byte // GUID
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}
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type createVirtualDiskParameters struct {
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Version uint32 // Must always be set to 2
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Version2 version2
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}
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// CreateVhdx will create a simple vhdx file at the given path using default values.
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func CreateVhdx(path string, maxSizeInGb, blockSizeInMb uint32) error {
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var defaultType virtualStorageType
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parameters := createVirtualDiskParameters{
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Version: 2,
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Version2: version2{
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MaximumSize: uint64(maxSizeInGb) * 1024 * 1024 * 1024,
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BlockSizeInBytes: blockSizeInMb * 1024 * 1024,
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},
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}
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var handle syscall.Handle
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if err := createVirtualDisk(
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&defaultType,
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path,
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virtualDiskAccessNONE,
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nil,
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createVirtualDiskFlagNone,
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0,
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¶meters,
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nil,
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&handle); err != nil {
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return err
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}
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if err := syscall.CloseHandle(handle); err != nil {
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return err
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}
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return nil
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}
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