wireguard-go/tun/wintun/setupapi/setupapi_windows.go

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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
*/
package setupapi
import (
"encoding/binary"
"fmt"
"syscall"
"unsafe"
"golang.org/x/sys/windows"
"golang.org/x/sys/windows/registry"
)
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//sys setupDiCreateDeviceInfoListEx(classGUID *windows.GUID, hwndParent uintptr, machineName *uint16, reserved uintptr) (handle DevInfo, err error) [failretval==DevInfo(windows.InvalidHandle)] = setupapi.SetupDiCreateDeviceInfoListExW
// SetupDiCreateDeviceInfoListEx function creates an empty device information set on a remote or a local computer and optionally associates the set with a device setup class.
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func SetupDiCreateDeviceInfoListEx(classGUID *windows.GUID, hwndParent uintptr, machineName string) (deviceInfoSet DevInfo, err error) {
var machineNameUTF16 *uint16
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if machineName != "" {
machineNameUTF16, err = syscall.UTF16PtrFromString(machineName)
if err != nil {
return
}
}
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return setupDiCreateDeviceInfoListEx(classGUID, hwndParent, machineNameUTF16, 0)
}
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//sys setupDiGetDeviceInfoListDetail(deviceInfoSet DevInfo, deviceInfoSetDetailData *_SP_DEVINFO_LIST_DETAIL_DATA) (err error) = setupapi.SetupDiGetDeviceInfoListDetailW
// SetupDiGetDeviceInfoListDetail function retrieves information associated with a device information set including the class GUID, remote computer handle, and remote computer name.
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func SetupDiGetDeviceInfoListDetail(deviceInfoSet DevInfo) (deviceInfoSetDetailData *DevInfoListDetailData, err error) {
var _data _SP_DEVINFO_LIST_DETAIL_DATA
_data.Size = uint32(unsafe.Sizeof(_data))
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err = setupDiGetDeviceInfoListDetail(deviceInfoSet, &_data)
if err != nil {
return
}
return _data.toGo(), nil
}
// GetDeviceInfoListDetail method retrieves information associated with a device information set including the class GUID, remote computer handle, and remote computer name.
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func (deviceInfoSet DevInfo) GetDeviceInfoListDetail() (*DevInfoListDetailData, error) {
return SetupDiGetDeviceInfoListDetail(deviceInfoSet)
}
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//sys setupDiCreateDeviceInfo(deviceInfoSet DevInfo, DeviceName *uint16, classGUID *windows.GUID, DeviceDescription *uint16, hwndParent uintptr, CreationFlags DICD, deviceInfoData *SP_DEVINFO_DATA) (err error) = setupapi.SetupDiCreateDeviceInfoW
// SetupDiCreateDeviceInfo function creates a new device information element and adds it as a new member to the specified device information set.
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func SetupDiCreateDeviceInfo(deviceInfoSet DevInfo, deviceName string, classGUID *windows.GUID, deviceDescription string, hwndParent uintptr, creationFlags DICD) (deviceInfoData *SP_DEVINFO_DATA, err error) {
deviceNameUTF16, err := syscall.UTF16PtrFromString(deviceName)
if err != nil {
return
}
var deviceDescriptionUTF16 *uint16
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if deviceDescription != "" {
deviceDescriptionUTF16, err = syscall.UTF16PtrFromString(deviceDescription)
if err != nil {
return
}
}
data := SP_DEVINFO_DATA{}
data.Size = uint32(unsafe.Sizeof(data))
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return &data, setupDiCreateDeviceInfo(deviceInfoSet, deviceNameUTF16, classGUID, deviceDescriptionUTF16, hwndParent, creationFlags, &data)
}
// CreateDeviceInfo method creates a new device information element and adds it as a new member to the specified device information set.
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func (deviceInfoSet DevInfo) CreateDeviceInfo(deviceName string, classGUID *windows.GUID, deviceDescription string, hwndParent uintptr, creationFlags DICD) (*SP_DEVINFO_DATA, error) {
return SetupDiCreateDeviceInfo(deviceInfoSet, deviceName, classGUID, deviceDescription, hwndParent, creationFlags)
}
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//sys setupDiEnumDeviceInfo(deviceInfoSet DevInfo, memberIndex uint32, deviceInfoData *SP_DEVINFO_DATA) (err error) = setupapi.SetupDiEnumDeviceInfo
// SetupDiEnumDeviceInfo function returns a SP_DEVINFO_DATA structure that specifies a device information element in a device information set.
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func SetupDiEnumDeviceInfo(deviceInfoSet DevInfo, memberIndex int) (*SP_DEVINFO_DATA, error) {
data := SP_DEVINFO_DATA{}
data.Size = uint32(unsafe.Sizeof(data))
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return &data, setupDiEnumDeviceInfo(deviceInfoSet, uint32(memberIndex), &data)
}
// EnumDeviceInfo method returns a SP_DEVINFO_DATA structure that specifies a device information element in a device information set.
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func (deviceInfoSet DevInfo) EnumDeviceInfo(memberIndex int) (*SP_DEVINFO_DATA, error) {
return SetupDiEnumDeviceInfo(deviceInfoSet, memberIndex)
}
// SetupDiDestroyDeviceInfoList function deletes a device information set and frees all associated memory.
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//sys SetupDiDestroyDeviceInfoList(deviceInfoSet DevInfo) (err error) = setupapi.SetupDiDestroyDeviceInfoList
// Close method deletes a device information set and frees all associated memory.
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func (deviceInfoSet DevInfo) Close() error {
return SetupDiDestroyDeviceInfoList(deviceInfoSet)
}
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//sys SetupDiBuildDriverInfoList(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, driverType SPDIT) (err error) = setupapi.SetupDiBuildDriverInfoList
// BuildDriverInfoList method builds a list of drivers that is associated with a specific device or with the global class driver list for a device information set.
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func (deviceInfoSet DevInfo) BuildDriverInfoList(deviceInfoData *SP_DEVINFO_DATA, driverType SPDIT) error {
return SetupDiBuildDriverInfoList(deviceInfoSet, deviceInfoData, driverType)
}
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//sys SetupDiCancelDriverInfoSearch(deviceInfoSet DevInfo) (err error) = setupapi.SetupDiCancelDriverInfoSearch
// CancelDriverInfoSearch method cancels a driver list search that is currently in progress in a different thread.
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func (deviceInfoSet DevInfo) CancelDriverInfoSearch() error {
return SetupDiCancelDriverInfoSearch(deviceInfoSet)
}
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//sys setupDiEnumDriverInfo(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, driverType SPDIT, memberIndex uint32, driverInfoData *SP_DRVINFO_DATA) (err error) = setupapi.SetupDiEnumDriverInfoW
// SetupDiEnumDriverInfo function enumerates the members of a driver list.
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func SetupDiEnumDriverInfo(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, driverType SPDIT, memberIndex int) (*SP_DRVINFO_DATA, error) {
data := &SP_DRVINFO_DATA{}
data.Size = uint32(unsafe.Sizeof(*data))
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return data, setupDiEnumDriverInfo(deviceInfoSet, deviceInfoData, driverType, uint32(memberIndex), data)
}
// EnumDriverInfo method enumerates the members of a driver list.
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func (deviceInfoSet DevInfo) EnumDriverInfo(deviceInfoData *SP_DEVINFO_DATA, driverType SPDIT, memberIndex int) (*SP_DRVINFO_DATA, error) {
return SetupDiEnumDriverInfo(deviceInfoSet, deviceInfoData, driverType, memberIndex)
}
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//sys setupDiGetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, driverInfoData *SP_DRVINFO_DATA) (err error) = setupapi.SetupDiGetSelectedDriverW
// SetupDiGetSelectedDriver function retrieves the selected driver for a device information set or a particular device information element.
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func SetupDiGetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA) (*SP_DRVINFO_DATA, error) {
data := &SP_DRVINFO_DATA{}
data.Size = uint32(unsafe.Sizeof(*data))
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return data, setupDiGetSelectedDriver(deviceInfoSet, deviceInfoData, data)
}
// GetSelectedDriver method retrieves the selected driver for a device information set or a particular device information element.
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func (deviceInfoSet DevInfo) GetSelectedDriver(deviceInfoData *SP_DEVINFO_DATA) (*SP_DRVINFO_DATA, error) {
return SetupDiGetSelectedDriver(deviceInfoSet, deviceInfoData)
}
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//sys SetupDiSetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, driverInfoData *SP_DRVINFO_DATA) (err error) = setupapi.SetupDiSetSelectedDriverW
// SetSelectedDriver method sets, or resets, the selected driver for a device information element or the selected class driver for a device information set.
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func (deviceInfoSet DevInfo) SetSelectedDriver(deviceInfoData *SP_DEVINFO_DATA, driverInfoData *SP_DRVINFO_DATA) error {
return SetupDiSetSelectedDriver(deviceInfoSet, deviceInfoData, driverInfoData)
}
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//sys setupDiGetDriverInfoDetail(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, driverInfoData *SP_DRVINFO_DATA, driverInfoDetailData *_SP_DRVINFO_DETAIL_DATA, driverInfoDetailDataSize uint32, requiredSize *uint32) (err error) = setupapi.SetupDiGetDriverInfoDetailW
// SetupDiGetDriverInfoDetail function retrieves driver information detail for a device information set or a particular device information element in the device information set.
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func SetupDiGetDriverInfoDetail(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, driverInfoData *SP_DRVINFO_DATA) (driverInfoDetailData *DrvInfoDetailData, err error) {
const bufCapacity = 0x800
buf := [bufCapacity]byte{}
var bufLen uint32
_data := (*_SP_DRVINFO_DETAIL_DATA)(unsafe.Pointer(&buf[0]))
_data.Size = uint32(unsafe.Sizeof(*_data))
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err = setupDiGetDriverInfoDetail(deviceInfoSet, deviceInfoData, driverInfoData, _data, bufCapacity, &bufLen)
if err == nil {
// The buffer was was sufficiently big.
return _data.toGo(bufLen), nil
}
if errWin, ok := err.(syscall.Errno); ok && errWin == windows.ERROR_INSUFFICIENT_BUFFER {
// The buffer was too small. Now that we got the required size, create another one big enough and retry.
buf := make([]byte, bufLen)
_data := (*_SP_DRVINFO_DETAIL_DATA)(unsafe.Pointer(&buf[0]))
_data.Size = uint32(unsafe.Sizeof(*_data))
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err = setupDiGetDriverInfoDetail(deviceInfoSet, deviceInfoData, driverInfoData, _data, bufLen, &bufLen)
if err == nil {
return _data.toGo(bufLen), nil
}
}
return
}
// GetDriverInfoDetail method retrieves driver information detail for a device information set or a particular device information element in the device information set.
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func (deviceInfoSet DevInfo) GetDriverInfoDetail(deviceInfoData *SP_DEVINFO_DATA, driverInfoData *SP_DRVINFO_DATA) (*DrvInfoDetailData, error) {
return SetupDiGetDriverInfoDetail(deviceInfoSet, deviceInfoData, driverInfoData)
}
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//sys SetupDiDestroyDriverInfoList(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, driverType SPDIT) (err error) = setupapi.SetupDiDestroyDriverInfoList
// DestroyDriverInfoList method deletes a driver list.
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func (deviceInfoSet DevInfo) DestroyDriverInfoList(deviceInfoData *SP_DEVINFO_DATA, driverType SPDIT) error {
return SetupDiDestroyDriverInfoList(deviceInfoSet, deviceInfoData, driverType)
}
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//sys setupDiGetClassDevsEx(classGUID *windows.GUID, Enumerator *uint16, hwndParent uintptr, Flags DIGCF, deviceInfoSet DevInfo, machineName *uint16, reserved uintptr) (handle DevInfo, err error) [failretval==DevInfo(windows.InvalidHandle)] = setupapi.SetupDiGetClassDevsExW
// SetupDiGetClassDevsEx function returns a handle to a device information set that contains requested device information elements for a local or a remote computer.
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func SetupDiGetClassDevsEx(classGUID *windows.GUID, enumerator string, hwndParent uintptr, flags DIGCF, deviceInfoSet DevInfo, machineName string) (handle DevInfo, err error) {
var enumeratorUTF16 *uint16
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if enumerator != "" {
enumeratorUTF16, err = syscall.UTF16PtrFromString(enumerator)
if err != nil {
return
}
}
var machineNameUTF16 *uint16
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if machineName != "" {
machineNameUTF16, err = syscall.UTF16PtrFromString(machineName)
if err != nil {
return
}
}
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return setupDiGetClassDevsEx(classGUID, enumeratorUTF16, hwndParent, flags, deviceInfoSet, machineNameUTF16, 0)
}
// SetupDiCallClassInstaller function calls the appropriate class installer, and any registered co-installers, with the specified installation request (DIF code).
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//sys SetupDiCallClassInstaller(installFunction DI_FUNCTION, deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA) (err error) = setupapi.SetupDiCallClassInstaller
// CallClassInstaller member calls the appropriate class installer, and any registered co-installers, with the specified installation request (DIF code).
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func (deviceInfoSet DevInfo) CallClassInstaller(installFunction DI_FUNCTION, deviceInfoData *SP_DEVINFO_DATA) error {
return SetupDiCallClassInstaller(installFunction, deviceInfoSet, deviceInfoData)
}
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//sys setupDiOpenDevRegKey(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, Scope DICS_FLAG, HwProfile uint32, KeyType DIREG, samDesired uint32) (key windows.Handle, err error) [failretval==windows.InvalidHandle] = setupapi.SetupDiOpenDevRegKey
// SetupDiOpenDevRegKey function opens a registry key for device-specific configuration information.
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func SetupDiOpenDevRegKey(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, scope DICS_FLAG, hwProfile uint32, keyType DIREG, samDesired uint32) (registry.Key, error) {
handle, err := setupDiOpenDevRegKey(deviceInfoSet, deviceInfoData, scope, hwProfile, keyType, samDesired)
return registry.Key(handle), err
}
// OpenDevRegKey method opens a registry key for device-specific configuration information.
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func (deviceInfoSet DevInfo) OpenDevRegKey(DeviceInfoData *SP_DEVINFO_DATA, Scope DICS_FLAG, HwProfile uint32, KeyType DIREG, samDesired uint32) (registry.Key, error) {
return SetupDiOpenDevRegKey(deviceInfoSet, DeviceInfoData, Scope, HwProfile, KeyType, samDesired)
}
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//sys setupDiGetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, property SPDRP, propertyRegDataType *uint32, propertyBuffer *byte, propertyBufferSize uint32, requiredSize *uint32) (err error) = setupapi.SetupDiGetDeviceRegistryPropertyW
// SetupDiGetDeviceRegistryProperty function retrieves a specified Plug and Play device property.
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func SetupDiGetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, property SPDRP) (value interface{}, err error) {
buf := make([]byte, 0x100)
var dataType, bufLen uint32
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err = setupDiGetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, &dataType, &buf[0], uint32(cap(buf)), &bufLen)
if err == nil {
// The buffer was sufficiently big.
return getRegistryValue(buf[:bufLen], dataType)
}
if errWin, ok := err.(syscall.Errno); ok && errWin == windows.ERROR_INSUFFICIENT_BUFFER {
// The buffer was too small. Now that we got the required size, create another one big enough and retry.
buf = make([]byte, bufLen)
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err = setupDiGetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, &dataType, &buf[0], uint32(cap(buf)), &bufLen)
if err == nil {
return getRegistryValue(buf[:bufLen], dataType)
}
}
return
}
func getRegistryValue(buf []byte, dataType uint32) (interface{}, error) {
switch dataType {
case windows.REG_SZ:
return windows.UTF16ToString(BufToUTF16(buf)), nil
case windows.REG_EXPAND_SZ:
return registry.ExpandString(windows.UTF16ToString(BufToUTF16(buf)))
case windows.REG_BINARY:
return buf, nil
case windows.REG_DWORD_LITTLE_ENDIAN:
return binary.LittleEndian.Uint32(buf), nil
case windows.REG_DWORD_BIG_ENDIAN:
return binary.BigEndian.Uint32(buf), nil
case windows.REG_MULTI_SZ:
bufW := BufToUTF16(buf)
a := []string{}
for i := 0; i < len(bufW); {
j := i + wcslen(bufW[i:])
if i < j {
a = append(a, windows.UTF16ToString(bufW[i:j]))
}
i = j + 1
}
return a, nil
case windows.REG_QWORD_LITTLE_ENDIAN:
return binary.LittleEndian.Uint64(buf), nil
default:
return nil, fmt.Errorf("Unsupported registry value type: %v", dataType)
}
}
// BufToUTF16 function reinterprets []byte buffer as []uint16
func BufToUTF16(buf []byte) []uint16 {
sl := struct {
addr *uint16
len int
cap int
}{(*uint16)(unsafe.Pointer(&buf[0])), len(buf) / 2, cap(buf) / 2}
return *(*[]uint16)(unsafe.Pointer(&sl))
}
// UTF16ToBuf function reinterprets []uint16 as []byte
func UTF16ToBuf(buf []uint16) []byte {
sl := struct {
addr *byte
len int
cap int
}{(*byte)(unsafe.Pointer(&buf[0])), len(buf) * 2, cap(buf) * 2}
return *(*[]byte)(unsafe.Pointer(&sl))
}
func wcslen(str []uint16) int {
for i := 0; i < len(str); i++ {
if str[i] == 0 {
return i
}
}
return len(str)
}
// GetDeviceRegistryProperty method retrieves a specified Plug and Play device property.
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func (deviceInfoSet DevInfo) GetDeviceRegistryProperty(deviceInfoData *SP_DEVINFO_DATA, property SPDRP) (interface{}, error) {
return SetupDiGetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property)
}
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//sys setupDiSetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, property SPDRP, propertyBuffer *byte, propertyBufferSize uint32) (err error) = setupapi.SetupDiSetDeviceRegistryPropertyW
// SetupDiSetDeviceRegistryProperty function sets a Plug and Play device property for a device.
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func SetupDiSetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, property SPDRP, propertyBuffers []byte) error {
return setupDiSetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, &propertyBuffers[0], uint32(len(propertyBuffers)))
}
// SetDeviceRegistryProperty function sets a Plug and Play device property for a device.
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func (deviceInfoSet DevInfo) SetDeviceRegistryProperty(deviceInfoData *SP_DEVINFO_DATA, property SPDRP, propertyBuffers []byte) error {
return SetupDiSetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, propertyBuffers)
}
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//sys setupDiGetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, deviceInstallParams *_SP_DEVINSTALL_PARAMS) (err error) = setupapi.SetupDiGetDeviceInstallParamsW
// SetupDiGetDeviceInstallParams function retrieves device installation parameters for a device information set or a particular device information element.
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func SetupDiGetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA) (deviceInstallParams *DevInstallParams, err error) {
var _data _SP_DEVINSTALL_PARAMS
_data.Size = uint32(unsafe.Sizeof(_data))
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err = setupDiGetDeviceInstallParams(deviceInfoSet, deviceInfoData, &_data)
if err != nil {
return
}
return _data.toGo(), nil
}
// GetDeviceInstallParams method retrieves device installation parameters for a device information set or a particular device information element.
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func (deviceInfoSet DevInfo) GetDeviceInstallParams(deviceInfoData *SP_DEVINFO_DATA) (*DevInstallParams, error) {
return SetupDiGetDeviceInstallParams(deviceInfoSet, deviceInfoData)
}
// SetupDiGetClassInstallParams function retrieves class installation parameters for a device information set or a particular device information element.
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//sys SetupDiGetClassInstallParams(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, classInstallParams *SP_CLASSINSTALL_HEADER, classInstallParamsSize uint32, requiredSize *uint32) (err error) = setupapi.SetupDiGetClassInstallParamsW
// GetClassInstallParams method retrieves class installation parameters for a device information set or a particular device information element.
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func (deviceInfoSet DevInfo) GetClassInstallParams(deviceInfoData *SP_DEVINFO_DATA, classInstallParams *SP_CLASSINSTALL_HEADER, classInstallParamsSize uint32, requiredSize *uint32) error {
return SetupDiGetClassInstallParams(deviceInfoSet, deviceInfoData, classInstallParams, classInstallParamsSize, requiredSize)
}
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//sys setupDiSetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, deviceInstallParams *_SP_DEVINSTALL_PARAMS) (err error) = setupapi.SetupDiSetDeviceInstallParamsW
// SetupDiSetDeviceInstallParams function sets device installation parameters for a device information set or a particular device information element.
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func SetupDiSetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, deviceInstallParams *DevInstallParams) (err error) {
_data, err := deviceInstallParams.toWindows()
if err != nil {
return
}
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return setupDiSetDeviceInstallParams(deviceInfoSet, deviceInfoData, _data)
}
// SetDeviceInstallParams member sets device installation parameters for a device information set or a particular device information element.
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func (deviceInfoSet DevInfo) SetDeviceInstallParams(deviceInfoData *SP_DEVINFO_DATA, deviceInstallParams *DevInstallParams) error {
return SetupDiSetDeviceInstallParams(deviceInfoSet, deviceInfoData, deviceInstallParams)
}
// SetupDiSetClassInstallParams function sets or clears class install parameters for a device information set or a particular device information element.
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//sys SetupDiSetClassInstallParams(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA, classInstallParams *SP_CLASSINSTALL_HEADER, classInstallParamsSize uint32) (err error) = setupapi.SetupDiSetClassInstallParamsW
// SetClassInstallParams method sets or clears class install parameters for a device information set or a particular device information element.
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func (deviceInfoSet DevInfo) SetClassInstallParams(deviceInfoData *SP_DEVINFO_DATA, classInstallParams *SP_CLASSINSTALL_HEADER, classInstallParamsSize uint32) error {
return SetupDiSetClassInstallParams(deviceInfoSet, deviceInfoData, classInstallParams, classInstallParamsSize)
}
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//sys setupDiClassNameFromGuidEx(classGUID *windows.GUID, className *uint16, classNameSize uint32, requiredSize *uint32, machineName *uint16, reserved uintptr) (err error) = setupapi.SetupDiClassNameFromGuidExW
// SetupDiClassNameFromGuidEx function retrieves the class name associated with a class GUID. The class can be installed on a local or remote computer.
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func SetupDiClassNameFromGuidEx(classGUID *windows.GUID, machineName string) (className string, err error) {
var classNameUTF16 [MAX_CLASS_NAME_LEN]uint16
var machineNameUTF16 *uint16
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if machineName != "" {
machineNameUTF16, err = syscall.UTF16PtrFromString(machineName)
if err != nil {
return
}
}
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err = setupDiClassNameFromGuidEx(classGUID, &classNameUTF16[0], MAX_CLASS_NAME_LEN, nil, machineNameUTF16, 0)
if err != nil {
return
}
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className = windows.UTF16ToString(classNameUTF16[:])
return
}
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//sys setupDiClassGuidsFromNameEx(className *uint16, classGuidList *windows.GUID, classGuidListSize uint32, requiredSize *uint32, machineName *uint16, reserved uintptr) (err error) = setupapi.SetupDiClassGuidsFromNameExW
// SetupDiClassGuidsFromNameEx function retrieves the GUIDs associated with the specified class name. This resulting list contains the classes currently installed on a local or remote computer.
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func SetupDiClassGuidsFromNameEx(className string, machineName string) (classGuidLists []windows.GUID, err error) {
classNameUTF16, err := syscall.UTF16PtrFromString(className)
if err != nil {
return
}
const bufCapacity = 4
var buf [bufCapacity]windows.GUID
var bufLen uint32
var machineNameUTF16 *uint16
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if machineName != "" {
machineNameUTF16, err = syscall.UTF16PtrFromString(machineName)
if err != nil {
return
}
}
err = setupDiClassGuidsFromNameEx(classNameUTF16, &buf[0], bufCapacity, &bufLen, machineNameUTF16, 0)
if err == nil {
// The GUID array was sufficiently big. Return its slice.
return buf[:bufLen], nil
}
if errWin, ok := err.(syscall.Errno); ok && errWin == windows.ERROR_INSUFFICIENT_BUFFER {
// The GUID array was too small. Now that we got the required size, create another one big enough and retry.
buf := make([]windows.GUID, bufLen)
err = setupDiClassGuidsFromNameEx(classNameUTF16, &buf[0], bufLen, &bufLen, machineNameUTF16, 0)
if err == nil {
return buf[:bufLen], nil
}
}
return
}
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//sys setupDiGetSelectedDevice(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA) (err error) = setupapi.SetupDiGetSelectedDevice
// SetupDiGetSelectedDevice function retrieves the selected device information element in a device information set.
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func SetupDiGetSelectedDevice(deviceInfoSet DevInfo) (*SP_DEVINFO_DATA, error) {
data := SP_DEVINFO_DATA{}
data.Size = uint32(unsafe.Sizeof(data))
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return &data, setupDiGetSelectedDevice(deviceInfoSet, &data)
}
// GetSelectedDevice method retrieves the selected device information element in a device information set.
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func (deviceInfoSet DevInfo) GetSelectedDevice() (*SP_DEVINFO_DATA, error) {
return SetupDiGetSelectedDevice(deviceInfoSet)
}
// SetupDiSetSelectedDevice function sets a device information element as the selected member of a device information set. This function is typically used by an installation wizard.
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//sys SetupDiSetSelectedDevice(deviceInfoSet DevInfo, deviceInfoData *SP_DEVINFO_DATA) (err error) = setupapi.SetupDiSetSelectedDevice
// SetSelectedDevice method sets a device information element as the selected member of a device information set. This function is typically used by an installation wizard.
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func (deviceInfoSet DevInfo) SetSelectedDevice(deviceInfoData *SP_DEVINFO_DATA) error {
return SetupDiSetSelectedDevice(deviceInfoSet, deviceInfoData)
}