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Add support for setupapi.SetupDiClassGuidsFromNameEx()

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman
2019-02-04 09:36:42 +01:00
committed by Jason A. Donenfeld
parent f81882ee8b
commit 348b4e9f7c
3 changed files with 75 additions and 0 deletions
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37
setupapi/setupapi_windows.go
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@@ -14,6 +14,7 @@ import (
)
//sys setupDiClassNameFromGuidEx(ClassGUID *windows.GUID, ClassName *uint16, ClassNameSize uint32, RequiredSize *uint32, MachineName *uint16, Reserved uintptr) (err error) = setupapi.SetupDiClassNameFromGuidExW
//sys setupDiClassGuidsFromNameEx(ClassName *uint16, ClassGuidList *windows.GUID, ClassGuidListSize uint32, RequiredSize *uint32, MachineName *uint16, Reserved uintptr) (err error) = setupapi.SetupDiClassGuidsFromNameExW
//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
//sys SetupDiDestroyDeviceInfoList(DeviceInfoSet DevInfo) (err error) = setupapi.SetupDiDestroyDeviceInfoList
//sys setupDiGetDeviceInfoListDetail(DeviceInfoSet DevInfo, DeviceInfoSetDetailData *_SP_DEVINFO_LIST_DETAIL_DATA) (err error) = setupapi.SetupDiGetDeviceInfoListDetailW
@@ -46,6 +47,42 @@ func SetupDiClassNameFromGuidEx(ClassGUID *windows.GUID, MachineName string) (Cl
return
}
// 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.
func SetupDiClassGuidsFromNameEx(ClassName string, MachineName string) (ClassGuidList []windows.GUID, err error) {
_p0, err := syscall.UTF16PtrFromString(ClassName)
if err != nil {
return
}
var _p1 [4]windows.GUID
var _p1reqSize uint32
var _p2 *uint16
if MachineName != "" {
_p2, err = syscall.UTF16PtrFromString(MachineName)
if err != nil {
return
}
}
err = setupDiClassGuidsFromNameEx(_p0, &_p1[0], 4, &_p1reqSize, _p2, 0)
if err == nil {
// The GUID array was sufficiently big. Return its slice.
return _p1[:_p1reqSize], 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.
_p1 := make([]windows.GUID, _p1reqSize)
err = setupDiClassGuidsFromNameEx(_p0, &_p1[0], _p1reqSize, &_p1reqSize, _p2, 0)
if err == nil {
return _p1[:_p1reqSize], nil
}
}
return
}
// SetupDiGetClassDevsEx function returns a handle to a device information set that contains requested device information elements for a local or a remote computer.
func SetupDiGetClassDevsEx(ClassGUID *windows.GUID, Enumerator string, hwndParent uintptr, Flags DIGCF, DeviceInfoSet DevInfo, MachineName string) (handle DevInfo, err error) {
var _p0 *uint16