From e9604c63ae982883093e4d3c33867ce24416af05 Mon Sep 17 00:00:00 2001 From: Daniel Canter Date: Mon, 9 Nov 2020 17:13:17 -0800 Subject: [PATCH] Add new virtdisk calls/refactor vhd package This change adds bindings for AttachVirtualDisk and GetVirtualDiskPhysicalPath, some helper functions including one to create a differencing vhd, exports the create and open parameters, exports the create flags and adds a couple of missing flags. This will be used mainly to go hand in hand with the new computestorage calls added to hcsshim as all of the vhd creation and setup needs to be done manually for these calls. https://github.com/microsoft/hcsshim/pull/881. Signed-off-by: Daniel Canter --- vhd/vhd.go | 341 +++++++++++++++++++++++++++++++++++++++------------- vhd/zvhd.go | 54 ++++++--- 2 files changed, 297 insertions(+), 98 deletions(-) diff --git a/vhd/vhd.go b/vhd/vhd.go index 229ac255..91083a38 100644 --- a/vhd/vhd.go +++ b/vhd/vhd.go @@ -2,150 +2,323 @@ package vhd -import "syscall" +import ( + "fmt" + "syscall" + + "github.com/Microsoft/go-winio/pkg/guid" + "github.com/pkg/errors" + "golang.org/x/sys/windows" +) //go:generate go run mksyscall_windows.go -output zvhd.go vhd.go -//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 -//sys openVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, flags uint32, parameters *openVirtualDiskParameters, handle *syscall.Handle) (err error) [failretval != 0] = VirtDisk.OpenVirtualDisk -//sys detachVirtualDisk(handle syscall.Handle, flags uint32, providerSpecificFlags uint32) (err error) [failretval != 0] = VirtDisk.DetachVirtualDisk - -type virtualStorageType struct { - DeviceID uint32 - VendorID [16]byte -} +//sys createVirtualDisk(virtualStorageType *VirtualStorageType, path string, virtualDiskAccessMask uint32, securityDescriptor *uintptr, createVirtualDiskFlags uint32, providerSpecificFlags uint32, parameters *CreateVirtualDiskParameters, overlapped *syscall.Overlapped, handle *syscall.Handle) (err error) [failretval != 0] = virtdisk.CreateVirtualDisk +//sys openVirtualDisk(virtualStorageType *VirtualStorageType, path string, virtualDiskAccessMask uint32, openVirtualDiskFlags uint32, parameters *OpenVirtualDiskParameters, handle *syscall.Handle) (err error) [failretval != 0] = virtdisk.OpenVirtualDisk +//sys attachVirtualDisk(handle syscall.Handle, securityDescriptor *uintptr, attachVirtualDiskFlag uint32, providerSpecificFlags uint32, parameters *AttachVirtualDiskParameters, overlapped *syscall.Overlapped) (err error) [failretval != 0] = virtdisk.AttachVirtualDisk +//sys detachVirtualDisk(handle syscall.Handle, detachVirtualDiskFlags uint32, providerSpecificFlags uint32) (err error) [failretval != 0] = virtdisk.DetachVirtualDisk +//sys getVirtualDiskPhysicalPath(handle syscall.Handle, diskPathSizeInBytes *uint32, buffer *uint16) (err error) [failretval != 0] = virtdisk.GetVirtualDiskPhysicalPath type ( - createVirtualDiskFlag uint32 - VirtualDiskAccessMask uint32 + CreateVirtualDiskFlag uint32 VirtualDiskFlag uint32 + AttachVirtualDiskFlag uint32 + DetachVirtualDiskFlag uint32 + VirtualDiskAccessMask uint32 ) -const ( - // Flags for creating a VHD (not exported) - createVirtualDiskFlagNone createVirtualDiskFlag = 0 - createVirtualDiskFlagFullPhysicalAllocation createVirtualDiskFlag = 1 - createVirtualDiskFlagPreventWritesToSourceDisk createVirtualDiskFlag = 2 - createVirtualDiskFlagDoNotCopyMetadataFromParent createVirtualDiskFlag = 4 - - // Access Mask for opening a VHD - VirtualDiskAccessNone VirtualDiskAccessMask = 0 - VirtualDiskAccessAttachRO VirtualDiskAccessMask = 65536 - VirtualDiskAccessAttachRW VirtualDiskAccessMask = 131072 - VirtualDiskAccessDetach VirtualDiskAccessMask = 262144 - VirtualDiskAccessGetInfo VirtualDiskAccessMask = 524288 - VirtualDiskAccessCreate VirtualDiskAccessMask = 1048576 - VirtualDiskAccessMetaOps VirtualDiskAccessMask = 2097152 - VirtualDiskAccessRead VirtualDiskAccessMask = 851968 - VirtualDiskAccessAll VirtualDiskAccessMask = 4128768 - VirtualDiskAccessWritable VirtualDiskAccessMask = 3276800 - - // Flags for opening a VHD - OpenVirtualDiskFlagNone VirtualDiskFlag = 0 - OpenVirtualDiskFlagNoParents VirtualDiskFlag = 0x1 - OpenVirtualDiskFlagBlankFile VirtualDiskFlag = 0x2 - OpenVirtualDiskFlagBootDrive VirtualDiskFlag = 0x4 - OpenVirtualDiskFlagCachedIO VirtualDiskFlag = 0x8 - OpenVirtualDiskFlagCustomDiffChain VirtualDiskFlag = 0x10 - OpenVirtualDiskFlagParentCachedIO VirtualDiskFlag = 0x20 - OpenVirtualDiskFlagVhdSetFileOnly VirtualDiskFlag = 0x40 - OpenVirtualDiskFlagIgnoreRelativeParentLocator VirtualDiskFlag = 0x80 - OpenVirtualDiskFlagNoWriteHardening VirtualDiskFlag = 0x100 -) +type VirtualStorageType struct { + DeviceID uint32 + VendorID guid.GUID +} -type createVersion2 struct { - UniqueID [16]byte // GUID +type CreateVersion2 struct { + UniqueID guid.GUID MaximumSize uint64 BlockSizeInBytes uint32 SectorSizeInBytes uint32 + PhysicalSectorSizeInByte uint32 ParentPath *uint16 // string SourcePath *uint16 // string OpenFlags uint32 - ParentVirtualStorageType virtualStorageType - SourceVirtualStorageType virtualStorageType - ResiliencyGUID [16]byte // GUID + ParentVirtualStorageType VirtualStorageType + SourceVirtualStorageType VirtualStorageType + ResiliencyGUID guid.GUID } -type createVirtualDiskParameters struct { +type CreateVirtualDiskParameters struct { Version uint32 // Must always be set to 2 - Version2 createVersion2 + Version2 CreateVersion2 } -type openVersion2 struct { - GetInfoOnly int32 // bool but 4-byte aligned - ReadOnly int32 // bool but 4-byte aligned - ResiliencyGUID [16]byte // GUID +type OpenVersion2 struct { + GetInfoOnly bool + ReadOnly bool + ResiliencyGUID guid.GUID } -type openVirtualDiskParameters struct { +type OpenVirtualDiskParameters struct { Version uint32 // Must always be set to 2 - Version2 openVersion2 + Version2 OpenVersion2 } -// CreateVhdx will create a simple vhdx file at the given path using default values. -func CreateVhdx(path string, maxSizeInGb, blockSizeInMb uint32) error { - var ( - defaultType virtualStorageType - handle syscall.Handle - ) +type AttachVersion2 struct { + RestrictedOffset uint64 + RestrictedLength uint64 +} + +type AttachVirtualDiskParameters struct { + Version uint32 // Must always be set to 2 + Version2 AttachVersion2 +} + +const ( + VIRTUAL_STORAGE_TYPE_DEVICE_VHDX = 0x3 + + // Access Mask for opening a VHD + VirtualDiskAccessNone VirtualDiskAccessMask = 0x00000000 + VirtualDiskAccessAttachRO VirtualDiskAccessMask = 0x00010000 + VirtualDiskAccessAttachRW VirtualDiskAccessMask = 0x00020000 + VirtualDiskAccessDetach VirtualDiskAccessMask = 0x00040000 + VirtualDiskAccessGetInfo VirtualDiskAccessMask = 0x00080000 + VirtualDiskAccessCreate VirtualDiskAccessMask = 0x00100000 + VirtualDiskAccessMetaOps VirtualDiskAccessMask = 0x00200000 + VirtualDiskAccessRead VirtualDiskAccessMask = 0x000d0000 + VirtualDiskAccessAll VirtualDiskAccessMask = 0x003f0000 + VirtualDiskAccessWritable VirtualDiskAccessMask = 0x00320000 - parameters := createVirtualDiskParameters{ + // Flags for creating a VHD + CreateVirtualDiskFlagNone CreateVirtualDiskFlag = 0x0 + CreateVirtualDiskFlagFullPhysicalAllocation CreateVirtualDiskFlag = 0x1 + CreateVirtualDiskFlagPreventWritesToSourceDisk CreateVirtualDiskFlag = 0x2 + CreateVirtualDiskFlagDoNotCopyMetadataFromParent CreateVirtualDiskFlag = 0x4 + CreateVirtualDiskFlagCreateBackingStorage CreateVirtualDiskFlag = 0x8 + CreateVirtualDiskFlagUseChangeTrackingSourceLimit CreateVirtualDiskFlag = 0x10 + CreateVirtualDiskFlagPreserveParentChangeTrackingState CreateVirtualDiskFlag = 0x20 + CreateVirtualDiskFlagVhdSetUseOriginalBackingStorage CreateVirtualDiskFlag = 0x40 + CreateVirtualDiskFlagSparseFile CreateVirtualDiskFlag = 0x80 + CreateVirtualDiskFlagPmemCompatible CreateVirtualDiskFlag = 0x100 + CreateVirtualDiskFlagSupportCompressedVolumes CreateVirtualDiskFlag = 0x200 + + // Flags for opening a VHD + OpenVirtualDiskFlagNone VirtualDiskFlag = 0x00000000 + OpenVirtualDiskFlagNoParents VirtualDiskFlag = 0x00000001 + OpenVirtualDiskFlagBlankFile VirtualDiskFlag = 0x00000002 + OpenVirtualDiskFlagBootDrive VirtualDiskFlag = 0x00000004 + OpenVirtualDiskFlagCachedIO VirtualDiskFlag = 0x00000008 + OpenVirtualDiskFlagCustomDiffChain VirtualDiskFlag = 0x00000010 + OpenVirtualDiskFlagParentCachedIO VirtualDiskFlag = 0x00000020 + OpenVirtualDiskFlagVhdsetFileOnly VirtualDiskFlag = 0x00000040 + OpenVirtualDiskFlagIgnoreRelativeParentLocator VirtualDiskFlag = 0x00000080 + OpenVirtualDiskFlagNoWriteHardening VirtualDiskFlag = 0x00000100 + OpenVirtualDiskFlagSupportCompressedVolumes VirtualDiskFlag = 0x00000200 + + // Flags for attaching a VHD + AttachVirtualDiskFlagNone AttachVirtualDiskFlag = 0x00000000 + AttachVirtualDiskFlagReadOnly AttachVirtualDiskFlag = 0x00000001 + AttachVirtualDiskFlagNoDriveLetter AttachVirtualDiskFlag = 0x00000002 + AttachVirtualDiskFlagPermanentLifetime AttachVirtualDiskFlag = 0x00000004 + AttachVirtualDiskFlagNoLocalHost AttachVirtualDiskFlag = 0x00000008 + AttachVirtualDiskFlagNoSecurityDescriptor AttachVirtualDiskFlag = 0x00000010 + AttachVirtualDiskFlagBypassDefaultEncryptionPolicy AttachVirtualDiskFlag = 0x00000020 + AttachVirtualDiskFlagNonPnp AttachVirtualDiskFlag = 0x00000040 + AttachVirtualDiskFlagRestrictedRange AttachVirtualDiskFlag = 0x00000080 + AttachVirtualDiskFlagSinglePartition AttachVirtualDiskFlag = 0x00000100 + AttachVirtualDiskFlagRegisterVolume AttachVirtualDiskFlag = 0x00000200 + + // Flags for detaching a VHD + DetachVirtualDiskFlagNone DetachVirtualDiskFlag = 0x0 +) + +// CreateVhdx is a helper function to create a simple vhdx file at the given path using +// default values. +func CreateVhdx(path string, maxSizeInGb, blockSizeInMb uint32) error { + params := CreateVirtualDiskParameters{ Version: 2, - Version2: createVersion2{ + Version2: CreateVersion2{ MaximumSize: uint64(maxSizeInGb) * 1024 * 1024 * 1024, BlockSizeInBytes: blockSizeInMb * 1024 * 1024, }, } - if err := createVirtualDisk( - &defaultType, - path, - uint32(VirtualDiskAccessNone), - nil, - uint32(createVirtualDiskFlagNone), - 0, - ¶meters, - nil, - &handle); err != nil { + handle, err := CreateVirtualDisk(path, VirtualDiskAccessNone, CreateVirtualDiskFlagNone, ¶ms) + if err != nil { return err } if err := syscall.CloseHandle(handle); err != nil { return err } + return nil +} +// DetachVirtualDisk detaches a virtual hard disk by handle. +func DetachVirtualDisk(handle syscall.Handle) (err error) { + if err := detachVirtualDisk(handle, 0, 0); err != nil { + return errors.Wrap(err, "failed to detach virtual disk") + } return nil } -// DetachVhd detaches a mounted container layer vhd found at `path`. +// DetachVhd detaches a vhd found at `path`. func DetachVhd(path string) error { handle, err := OpenVirtualDisk( path, VirtualDiskAccessNone, - OpenVirtualDiskFlagCachedIO|OpenVirtualDiskFlagIgnoreRelativeParentLocator) + OpenVirtualDiskFlagCachedIO|OpenVirtualDiskFlagIgnoreRelativeParentLocator, + ) + if err != nil { + return err + } + defer syscall.CloseHandle(handle) + return DetachVirtualDisk(handle) +} + +// AttachVirtualDisk attaches a virtual hard disk for use. +func AttachVirtualDisk(handle syscall.Handle, attachVirtualDiskFlag AttachVirtualDiskFlag, parameters *AttachVirtualDiskParameters) (err error) { + if parameters.Version != 2 { + return fmt.Errorf("only version 2 VHDs are supported, found version: %d", parameters.Version) + } + if err := attachVirtualDisk( + handle, + nil, + uint32(attachVirtualDiskFlag), + 0, + parameters, + nil, + ); err != nil { + return errors.Wrap(err, "failed to attach virtual disk") + } + return nil +} +// AttachVhd attaches a virtual hard disk at `path` for use. +func AttachVhd(path string) (err error) { + handle, err := OpenVirtualDisk( + path, + VirtualDiskAccessNone, + OpenVirtualDiskFlagCachedIO|OpenVirtualDiskFlagIgnoreRelativeParentLocator, + ) if err != nil { return err } + defer syscall.CloseHandle(handle) - return detachVirtualDisk(handle, 0, 0) + params := AttachVirtualDiskParameters{Version: 2} + if err := AttachVirtualDisk( + handle, + AttachVirtualDiskFlagNone, + ¶ms, + ); err != nil { + return errors.Wrap(err, "failed to attach virtual disk") + } + return nil } // OpenVirtualDisk obtains a handle to a VHD opened with supplied access mask and flags. -func OpenVirtualDisk(path string, accessMask VirtualDiskAccessMask, flag VirtualDiskFlag) (syscall.Handle, error) { +func OpenVirtualDisk(vhdPath string, virtualDiskAccessMask VirtualDiskAccessMask, openVirtualDiskFlags VirtualDiskFlag) (syscall.Handle, error) { + parameters := OpenVirtualDiskParameters{Version: 2} + handle, err := OpenVirtualDiskWithParameters( + vhdPath, + virtualDiskAccessMask, + openVirtualDiskFlags, + ¶meters, + ) + if err != nil { + return 0, err + } + return handle, nil +} + +// OpenVirtualDiskWithParameters obtains a handle to a VHD opened with supplied access mask, flags and parameters. +func OpenVirtualDiskWithParameters(vhdPath string, virtualDiskAccessMask VirtualDiskAccessMask, openVirtualDiskFlags VirtualDiskFlag, parameters *OpenVirtualDiskParameters) (syscall.Handle, error) { var ( - defaultType virtualStorageType handle syscall.Handle + defaultType VirtualStorageType ) - parameters := openVirtualDiskParameters{Version: 2} + if parameters.Version != 2 { + return handle, fmt.Errorf("only version 2 VHDs are supported, found version: %d", parameters.Version) + } if err := openVirtualDisk( + &defaultType, + vhdPath, + uint32(virtualDiskAccessMask), + uint32(openVirtualDiskFlags), + parameters, + &handle, + ); err != nil { + return 0, errors.Wrap(err, "failed to open virtual disk") + } + return handle, nil +} + +// CreateVirtualDisk creates a virtual harddisk and returns a handle to the disk. +func CreateVirtualDisk(path string, virtualDiskAccessMask VirtualDiskAccessMask, createVirtualDiskFlags CreateVirtualDiskFlag, parameters *CreateVirtualDiskParameters) (syscall.Handle, error) { + var ( + handle syscall.Handle + defaultType VirtualStorageType + ) + if parameters.Version != 2 { + return handle, fmt.Errorf("only version 2 VHDs are supported, found version: %d", parameters.Version) + } + + if err := createVirtualDisk( &defaultType, path, - uint32(accessMask), - uint32(flag), - ¶meters, - &handle); err != nil { - return 0, err + uint32(virtualDiskAccessMask), + nil, + uint32(createVirtualDiskFlags), + 0, + parameters, + nil, + &handle, + ); err != nil { + return handle, errors.Wrap(err, "failed to create virtual disk") } return handle, nil } + +// GetVirtualDiskPhysicalPath takes a handle to a virtual hard disk and returns the physical +// path of the disk on the machine. This path is in the form \\.\PhysicalDriveX where X is an integer +// that represents the particular enumeration of the physical disk on the caller's system. +func GetVirtualDiskPhysicalPath(handle syscall.Handle) (_ string, err error) { + var ( + diskPathSizeInBytes uint32 = 256 * 2 // max path length 256 wide chars + diskPhysicalPathBuf [256]uint16 + ) + if err := getVirtualDiskPhysicalPath( + handle, + &diskPathSizeInBytes, + &diskPhysicalPathBuf[0], + ); err != nil { + return "", errors.Wrap(err, "failed to get disk physical path") + } + return windows.UTF16ToString(diskPhysicalPathBuf[:]), nil +} + +// CreateDiffVhd is a helper function to create a differencing virtual disk. +func CreateDiffVhd(diffVhdPath, baseVhdPath string, blockSizeInMB uint32) error { + // Setting `ParentPath` is how to signal to create a differencing disk. + createParams := &CreateVirtualDiskParameters{ + Version: 2, + Version2: CreateVersion2{ + ParentPath: windows.StringToUTF16Ptr(baseVhdPath), + BlockSizeInBytes: blockSizeInMB * 1024 * 1024, + OpenFlags: uint32(OpenVirtualDiskFlagCachedIO), + }, + } + + vhdHandle, err := CreateVirtualDisk( + diffVhdPath, + VirtualDiskAccessNone, + CreateVirtualDiskFlagNone, + createParams, + ) + if err != nil { + return fmt.Errorf("failed to create differencing vhd: %s", err) + } + if err := syscall.CloseHandle(vhdHandle); err != nil { + return fmt.Errorf("failed to close differencing vhd handle: %s", err) + } + return nil +} diff --git a/vhd/zvhd.go b/vhd/zvhd.go index 00599ea4..54c94db7 100644 --- a/vhd/zvhd.go +++ b/vhd/zvhd.go @@ -37,24 +37,26 @@ func errnoErr(e syscall.Errno) error { } var ( - modVirtDisk = windows.NewLazySystemDLL("VirtDisk.dll") + modvirtdisk = windows.NewLazySystemDLL("virtdisk.dll") - procCreateVirtualDisk = modVirtDisk.NewProc("CreateVirtualDisk") - procOpenVirtualDisk = modVirtDisk.NewProc("OpenVirtualDisk") - procDetachVirtualDisk = modVirtDisk.NewProc("DetachVirtualDisk") + procCreateVirtualDisk = modvirtdisk.NewProc("CreateVirtualDisk") + procOpenVirtualDisk = modvirtdisk.NewProc("OpenVirtualDisk") + procAttachVirtualDisk = modvirtdisk.NewProc("AttachVirtualDisk") + procDetachVirtualDisk = modvirtdisk.NewProc("DetachVirtualDisk") + procGetVirtualDiskPhysicalPath = modvirtdisk.NewProc("GetVirtualDiskPhysicalPath") ) -func createVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, securityDescriptor *uintptr, flags uint32, providerSpecificFlags uint32, parameters *createVirtualDiskParameters, o *syscall.Overlapped, handle *syscall.Handle) (err error) { +func createVirtualDisk(virtualStorageType *VirtualStorageType, path string, virtualDiskAccessMask uint32, securityDescriptor *uintptr, createVirtualDiskFlags uint32, providerSpecificFlags uint32, parameters *CreateVirtualDiskParameters, overlapped *syscall.Overlapped, handle *syscall.Handle) (err error) { var _p0 *uint16 _p0, err = syscall.UTF16PtrFromString(path) if err != nil { return } - return _createVirtualDisk(virtualStorageType, _p0, virtualDiskAccessMask, securityDescriptor, flags, providerSpecificFlags, parameters, o, handle) + return _createVirtualDisk(virtualStorageType, _p0, virtualDiskAccessMask, securityDescriptor, createVirtualDiskFlags, providerSpecificFlags, parameters, overlapped, handle) } -func _createVirtualDisk(virtualStorageType *virtualStorageType, path *uint16, virtualDiskAccessMask uint32, securityDescriptor *uintptr, flags uint32, providerSpecificFlags uint32, parameters *createVirtualDiskParameters, o *syscall.Overlapped, handle *syscall.Handle) (err error) { - r1, _, e1 := syscall.Syscall9(procCreateVirtualDisk.Addr(), 9, uintptr(unsafe.Pointer(virtualStorageType)), uintptr(unsafe.Pointer(path)), uintptr(virtualDiskAccessMask), uintptr(unsafe.Pointer(securityDescriptor)), uintptr(flags), uintptr(providerSpecificFlags), uintptr(unsafe.Pointer(parameters)), uintptr(unsafe.Pointer(o)), uintptr(unsafe.Pointer(handle))) +func _createVirtualDisk(virtualStorageType *VirtualStorageType, path *uint16, virtualDiskAccessMask uint32, securityDescriptor *uintptr, createVirtualDiskFlags uint32, providerSpecificFlags uint32, parameters *CreateVirtualDiskParameters, overlapped *syscall.Overlapped, handle *syscall.Handle) (err error) { + r1, _, e1 := syscall.Syscall9(procCreateVirtualDisk.Addr(), 9, uintptr(unsafe.Pointer(virtualStorageType)), uintptr(unsafe.Pointer(path)), uintptr(virtualDiskAccessMask), uintptr(unsafe.Pointer(securityDescriptor)), uintptr(createVirtualDiskFlags), uintptr(providerSpecificFlags), uintptr(unsafe.Pointer(parameters)), uintptr(unsafe.Pointer(overlapped)), uintptr(unsafe.Pointer(handle))) if r1 != 0 { if e1 != 0 { err = errnoErr(e1) @@ -65,17 +67,17 @@ func _createVirtualDisk(virtualStorageType *virtualStorageType, path *uint16, vi return } -func openVirtualDisk(virtualStorageType *virtualStorageType, path string, virtualDiskAccessMask uint32, flags uint32, parameters *openVirtualDiskParameters, handle *syscall.Handle) (err error) { +func openVirtualDisk(virtualStorageType *VirtualStorageType, path string, virtualDiskAccessMask uint32, openVirtualDiskFlags uint32, parameters *OpenVirtualDiskParameters, handle *syscall.Handle) (err error) { var _p0 *uint16 _p0, err = syscall.UTF16PtrFromString(path) if err != nil { return } - return _openVirtualDisk(virtualStorageType, _p0, virtualDiskAccessMask, flags, parameters, handle) + return _openVirtualDisk(virtualStorageType, _p0, virtualDiskAccessMask, openVirtualDiskFlags, parameters, handle) } -func _openVirtualDisk(virtualStorageType *virtualStorageType, path *uint16, virtualDiskAccessMask uint32, flags uint32, parameters *openVirtualDiskParameters, handle *syscall.Handle) (err error) { - r1, _, e1 := syscall.Syscall6(procOpenVirtualDisk.Addr(), 6, uintptr(unsafe.Pointer(virtualStorageType)), uintptr(unsafe.Pointer(path)), uintptr(virtualDiskAccessMask), uintptr(flags), uintptr(unsafe.Pointer(parameters)), uintptr(unsafe.Pointer(handle))) +func _openVirtualDisk(virtualStorageType *VirtualStorageType, path *uint16, virtualDiskAccessMask uint32, openVirtualDiskFlags uint32, parameters *OpenVirtualDiskParameters, handle *syscall.Handle) (err error) { + r1, _, e1 := syscall.Syscall6(procOpenVirtualDisk.Addr(), 6, uintptr(unsafe.Pointer(virtualStorageType)), uintptr(unsafe.Pointer(path)), uintptr(virtualDiskAccessMask), uintptr(openVirtualDiskFlags), uintptr(unsafe.Pointer(parameters)), uintptr(unsafe.Pointer(handle))) if r1 != 0 { if e1 != 0 { err = errnoErr(e1) @@ -86,8 +88,32 @@ func _openVirtualDisk(virtualStorageType *virtualStorageType, path *uint16, virt return } -func detachVirtualDisk(handle syscall.Handle, flags uint32, providerSpecificFlags uint32) (err error) { - r1, _, e1 := syscall.Syscall(procDetachVirtualDisk.Addr(), 3, uintptr(handle), uintptr(flags), uintptr(providerSpecificFlags)) +func attachVirtualDisk(handle syscall.Handle, securityDescriptor *uintptr, attachVirtualDiskFlag uint32, providerSpecificFlags uint32, parameters *AttachVirtualDiskParameters, overlapped *syscall.Overlapped) (err error) { + r1, _, e1 := syscall.Syscall6(procAttachVirtualDisk.Addr(), 6, uintptr(handle), uintptr(unsafe.Pointer(securityDescriptor)), uintptr(attachVirtualDiskFlag), uintptr(providerSpecificFlags), uintptr(unsafe.Pointer(parameters)), uintptr(unsafe.Pointer(overlapped))) + if r1 != 0 { + if e1 != 0 { + err = errnoErr(e1) + } else { + err = syscall.EINVAL + } + } + return +} + +func detachVirtualDisk(handle syscall.Handle, detachVirtualDiskFlags uint32, providerSpecificFlags uint32) (err error) { + r1, _, e1 := syscall.Syscall(procDetachVirtualDisk.Addr(), 3, uintptr(handle), uintptr(detachVirtualDiskFlags), uintptr(providerSpecificFlags)) + if r1 != 0 { + if e1 != 0 { + err = errnoErr(e1) + } else { + err = syscall.EINVAL + } + } + return +} + +func getVirtualDiskPhysicalPath(handle syscall.Handle, diskPathSizeInBytes *uint32, buffer *uint16) (err error) { + r1, _, e1 := syscall.Syscall(procGetVirtualDiskPhysicalPath.Addr(), 3, uintptr(handle), uintptr(unsafe.Pointer(diskPathSizeInBytes)), uintptr(unsafe.Pointer(buffer))) if r1 != 0 { if e1 != 0 { err = errnoErr(e1)