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Add support for setupapi.SetupDiClassNameFromGuid()

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2019-02-04 08:23:55 +01:00 committed by Jason A. Donenfeld
parent 90b6938ca0
commit 9635a0b3a6
4 changed files with 57 additions and 0 deletions
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14
setupapi/setupapi_windows.go
View file

@ -13,6 +13,7 @@ import (
"golang.org/x/sys/windows/registry"
)
//sys setupDiClassNameFromGuid(ClassGUID *windows.GUID, ClassName *uint16, ClassNameSize uint32, RequiredSize *uint32) (err error) = setupapi.SetupDiClassNameFromGuidW
//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
@ -24,6 +25,19 @@ import (
//sys SetupDiSetClassInstallParams(DeviceInfoSet DevInfo, DeviceInfoData *SP_DEVINFO_DATA, ClassInstallParams *SP_CLASSINSTALL_HEADER, ClassInstallParamsSize uint32) (err error) = setupapi.SetupDiSetClassInstallParamsW
//sys SetupDiCallClassInstaller(InstallFunction DI_FUNCTION, DeviceInfoSet DevInfo, DeviceInfoData *SP_DEVINFO_DATA) (err error) = setupapi.SetupDiCallClassInstaller
// SetupDiClassNameFromGuid function retrieves the class name associated with a class GUID.
func SetupDiClassNameFromGuid(ClassGUID *windows.GUID) (ClassName string, err error) {
var _p0 [MAX_CLASS_NAME_LEN]uint16
err = setupDiClassNameFromGuid(ClassGUID, &_p0[0], MAX_CLASS_NAME_LEN, nil)
if err != nil {
return
}
ClassName = windows.UTF16ToString(_p0[:])
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

19
setupapi/setupapi_windows_test.go
View file

@ -6,6 +6,7 @@
package setupapi
import (
"strings"
"syscall"
"testing"
@ -19,6 +20,24 @@ func init() {
computerName, _ = windows.ComputerName()
}
func TestSetupDiClassNameFromGuid(t *testing.T) {
className, err := SetupDiClassNameFromGuid(&deviceClassNetGUID)
if err != nil {
t.Errorf("Error calling SetupDiClassNameFromGuid: %s", err.Error())
} else if strings.ToLower(className) != "net" {
t.Errorf("SetupDiClassNameFromGuid(%x) should return \"Net\"", deviceClassNetGUID)
}
_, err = SetupDiClassNameFromGuid(nil)
if err == nil {
t.Errorf("SetupDiClassNameFromGuid(nil) should fail")
} else {
if errWin, ok := err.(syscall.Errno); !ok || errWin != 1784 /*ERROR_INVALID_USER_BUFFER*/ {
t.Errorf("SetupDiClassNameFromGuid(nil) should fail with ERROR_INVALID_USER_BUFFER")
}
}
}
func TestSetupDiGetClassDevsEx(t *testing.T) {
devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "PCI", 0, DIGCF_PRESENT, DevInfo(0), computerName)
if err == nil {

11
setupapi/types_windows.go
View file

@ -9,6 +9,17 @@ import (
"golang.org/x/sys/windows"
)
const (
MAX_DEVICE_ID_LEN = 200
MAX_DEVNODE_ID_LEN = MAX_DEVICE_ID_LEN
MAX_GUID_STRING_LEN = 39 // 38 chars + terminator null
MAX_CLASS_NAME_LEN = 32
MAX_PROFILE_LEN = 80
MAX_CONFIG_VALUE = 9999
MAX_INSTANCE_VALUE = 9999
CONFIGMG_VERSION = 0x0400
)
// DIGCF flags controll what is included in the device information set built by SetupDiGetClassDevs
type DIGCF uint32

13
setupapi/zsetupapi_windows.go
View file

@ -39,6 +39,7 @@ func errnoErr(e syscall.Errno) error {
var (
modsetupapi = windows.NewLazySystemDLL("setupapi.dll")
procSetupDiClassNameFromGuidW = modsetupapi.NewProc("SetupDiClassNameFromGuidW")
procSetupDiGetClassDevsExW = modsetupapi.NewProc("SetupDiGetClassDevsExW")
procSetupDiDestroyDeviceInfoList = modsetupapi.NewProc("SetupDiDestroyDeviceInfoList")
procSetupDiGetDeviceInfoListDetailW = modsetupapi.NewProc("SetupDiGetDeviceInfoListDetailW")
@ -51,6 +52,18 @@ var (
procSetupDiCallClassInstaller = modsetupapi.NewProc("SetupDiCallClassInstaller")
)
func setupDiClassNameFromGuid(ClassGUID *windows.GUID, ClassName *uint16, ClassNameSize uint32, RequiredSize *uint32) (err error) {
r1, _, e1 := syscall.Syscall6(procSetupDiClassNameFromGuidW.Addr(), 4, uintptr(unsafe.Pointer(ClassGUID)), uintptr(unsafe.Pointer(ClassName)), uintptr(ClassNameSize), uintptr(unsafe.Pointer(RequiredSize)), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiGetClassDevsEx(ClassGUID *windows.GUID, Enumerator *uint16, hwndParent uintptr, Flags DIGCF, DeviceInfoSet DevInfo, MachineName *uint16, reserved uintptr) (handle DevInfo, err error) {
r0, _, e1 := syscall.Syscall9(procSetupDiGetClassDevsExW.Addr(), 7, uintptr(unsafe.Pointer(ClassGUID)), uintptr(unsafe.Pointer(Enumerator)), uintptr(hwndParent), uintptr(Flags), uintptr(DeviceInfoSet), uintptr(unsafe.Pointer(MachineName)), uintptr(reserved), 0, 0)
handle = DevInfo(r0)