vendor: update buildkit to 8effd45b

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/Microsoft/hcsshim/internal/winapi/filesystem.go

@@ -31,6 +31,43 @@ const (
 	STATUS_NO_MORE_ENTRIES = 0x8000001a
 )
 
+// Select entries from FILE_INFO_BY_HANDLE_CLASS.
+//
+// C declaration:
+//   typedef enum _FILE_INFO_BY_HANDLE_CLASS {
+//       FileBasicInfo,
+//       FileStandardInfo,
+//       FileNameInfo,
+//       FileRenameInfo,
+//       FileDispositionInfo,
+//       FileAllocationInfo,
+//       FileEndOfFileInfo,
+//       FileStreamInfo,
+//       FileCompressionInfo,
+//       FileAttributeTagInfo,
+//       FileIdBothDirectoryInfo,
+//       FileIdBothDirectoryRestartInfo,
+//       FileIoPriorityHintInfo,
+//       FileRemoteProtocolInfo,
+//       FileFullDirectoryInfo,
+//       FileFullDirectoryRestartInfo,
+//       FileStorageInfo,
+//       FileAlignmentInfo,
+//       FileIdInfo,
+//       FileIdExtdDirectoryInfo,
+//       FileIdExtdDirectoryRestartInfo,
+//       FileDispositionInfoEx,
+//       FileRenameInfoEx,
+//       FileCaseSensitiveInfo,
+//       FileNormalizedNameInfo,
+//       MaximumFileInfoByHandleClass
+//   } FILE_INFO_BY_HANDLE_CLASS, *PFILE_INFO_BY_HANDLE_CLASS;
+//
+// Documentation: https://docs.microsoft.com/en-us/windows/win32/api/minwinbase/ne-minwinbase-file_info_by_handle_class
+const (
+	FileIdInfo = 18
+)
+
 type FileDispositionInformationEx struct {
 	Flags uintptr
 }
@@ -42,7 +79,7 @@ type IOStatusBlock struct {
 type ObjectAttributes struct {
 	Length             uintptr
 	RootDirectory      uintptr
-	ObjectName         uintptr
+	ObjectName         *UnicodeString
 	Attributes         uintptr
 	SecurityDescriptor uintptr
 	SecurityQoS        uintptr
@@ -59,3 +96,15 @@ type FileLinkInformation struct {
 	FileNameLength  uint32
 	FileName        [1]uint16
 }
+
+// C declaration:
+//   typedef struct _FILE_ID_INFO {
+//       ULONGLONG   VolumeSerialNumber;
+//       FILE_ID_128 FileId;
+//   } FILE_ID_INFO, *PFILE_ID_INFO;
+//
+// Documentation: https://docs.microsoft.com/en-us/windows/win32/api/winbase/ns-winbase-file_id_info
+type FILE_ID_INFO struct {
+	VolumeSerialNumber uint64
+	FileID             [16]byte
+}

vendor/github.com/Microsoft/hcsshim/internal/winapi/iocp.go

@@ -0,0 +1,3 @@
+package winapi
+
+//sys GetQueuedCompletionStatus(cphandle windows.Handle, qty *uint32, key *uintptr, overlapped **windows.Overlapped, timeout uint32) (err error)

vendor/github.com/Microsoft/hcsshim/internal/winapi/jobobject.go

@@ -1,32 +1,41 @@
 package winapi
 
 import (
+	"unsafe"
+
 	"golang.org/x/sys/windows"
 )
 
 // Messages that can be received from an assigned io completion port.
 // https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-jobobject_associate_completion_port
 const (
-	JOB_OBJECT_MSG_END_OF_JOB_TIME       = 1
-	JOB_OBJECT_MSG_END_OF_PROCESS_TIME   = 2
-	JOB_OBJECT_MSG_ACTIVE_PROCESS_LIMIT  = 3
-	JOB_OBJECT_MSG_ACTIVE_PROCESS_ZERO   = 4
-	JOB_OBJECT_MSG_NEW_PROCESS           = 6
-	JOB_OBJECT_MSG_EXIT_PROCESS          = 7
-	JOB_OBJECT_MSG_ABNORMAL_EXIT_PROCESS = 8
-	JOB_OBJECT_MSG_PROCESS_MEMORY_LIMIT  = 9
-	JOB_OBJECT_MSG_JOB_MEMORY_LIMIT      = 10
-	JOB_OBJECT_MSG_NOTIFICATION_LIMIT    = 11
+	JOB_OBJECT_MSG_END_OF_JOB_TIME       uint32 = 1
+	JOB_OBJECT_MSG_END_OF_PROCESS_TIME   uint32 = 2
+	JOB_OBJECT_MSG_ACTIVE_PROCESS_LIMIT  uint32 = 3
+	JOB_OBJECT_MSG_ACTIVE_PROCESS_ZERO   uint32 = 4
+	JOB_OBJECT_MSG_NEW_PROCESS           uint32 = 6
+	JOB_OBJECT_MSG_EXIT_PROCESS          uint32 = 7
+	JOB_OBJECT_MSG_ABNORMAL_EXIT_PROCESS uint32 = 8
+	JOB_OBJECT_MSG_PROCESS_MEMORY_LIMIT  uint32 = 9
+	JOB_OBJECT_MSG_JOB_MEMORY_LIMIT      uint32 = 10
+	JOB_OBJECT_MSG_NOTIFICATION_LIMIT    uint32 = 11
 )
 
+// Access rights for creating or opening job objects.
+//
+// https://docs.microsoft.com/en-us/windows/win32/procthread/job-object-security-and-access-rights
+const JOB_OBJECT_ALL_ACCESS = 0x1F001F
+
 // IO limit flags
 //
 // https://docs.microsoft.com/en-us/windows/win32/api/jobapi2/ns-jobapi2-jobobject_io_rate_control_information
 const JOB_OBJECT_IO_RATE_CONTROL_ENABLE = 0x1
 
+const JOBOBJECT_IO_ATTRIBUTION_CONTROL_ENABLE uint32 = 0x1
+
 // https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-jobobject_cpu_rate_control_information
 const (
-	JOB_OBJECT_CPU_RATE_CONTROL_ENABLE = 1 << iota
+	JOB_OBJECT_CPU_RATE_CONTROL_ENABLE uint32 = 1 << iota
 	JOB_OBJECT_CPU_RATE_CONTROL_WEIGHT_BASED
 	JOB_OBJECT_CPU_RATE_CONTROL_HARD_CAP
 	JOB_OBJECT_CPU_RATE_CONTROL_NOTIFY
@@ -41,7 +50,9 @@ const (
 	JobObjectBasicProcessIdList              uint32 = 3
 	JobObjectBasicAndIoAccountingInformation uint32 = 8
 	JobObjectLimitViolationInformation       uint32 = 13
+	JobObjectMemoryUsageInformation          uint32 = 28
 	JobObjectNotificationLimitInformation2   uint32 = 33
+	JobObjectIoAttribution                   uint32 = 42
 )
 
 // https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-jobobject_basic_limit_information
@@ -60,7 +71,7 @@ type JOBOBJECT_BASIC_LIMIT_INFORMATION struct {
 // https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-jobobject_cpu_rate_control_information
 type JOBOBJECT_CPU_RATE_CONTROL_INFORMATION struct {
 	ControlFlags uint32
-	Rate         uint32
+	Value        uint32
 }
 
 // https://docs.microsoft.com/en-us/windows/win32/api/jobapi2/ns-jobapi2-jobobject_io_rate_control_information
@@ -80,9 +91,68 @@ type JOBOBJECT_BASIC_PROCESS_ID_LIST struct {
 	ProcessIdList             [1]uintptr
 }
 
+// AllPids returns all the process Ids in the job object.
+func (p *JOBOBJECT_BASIC_PROCESS_ID_LIST) AllPids() []uintptr {
+	return (*[(1 << 27) - 1]uintptr)(unsafe.Pointer(&p.ProcessIdList[0]))[:p.NumberOfProcessIdsInList]
+}
+
+// https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-jobobject_basic_accounting_information
+type JOBOBJECT_BASIC_ACCOUNTING_INFORMATION struct {
+	TotalUserTime             int64
+	TotalKernelTime           int64
+	ThisPeriodTotalUserTime   int64
+	ThisPeriodTotalKernelTime int64
+	TotalPageFaultCount       uint32
+	TotalProcesses            uint32
+	ActiveProcesses           uint32
+	TotalTerminateProcesses   uint32
+}
+
+//https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-jobobject_basic_and_io_accounting_information
+type JOBOBJECT_BASIC_AND_IO_ACCOUNTING_INFORMATION struct {
+	BasicInfo JOBOBJECT_BASIC_ACCOUNTING_INFORMATION
+	IoInfo    windows.IO_COUNTERS
+}
+
+// typedef struct _JOBOBJECT_MEMORY_USAGE_INFORMATION {
+//     ULONG64 JobMemory;
+//     ULONG64 PeakJobMemoryUsed;
+// } JOBOBJECT_MEMORY_USAGE_INFORMATION, *PJOBOBJECT_MEMORY_USAGE_INFORMATION;
+//
+type JOBOBJECT_MEMORY_USAGE_INFORMATION struct {
+	JobMemory         uint64
+	PeakJobMemoryUsed uint64
+}
+
+// typedef struct _JOBOBJECT_IO_ATTRIBUTION_STATS {
+//     ULONG_PTR IoCount;
+//     ULONGLONG TotalNonOverlappedQueueTime;
+//     ULONGLONG TotalNonOverlappedServiceTime;
+//     ULONGLONG TotalSize;
+// } JOBOBJECT_IO_ATTRIBUTION_STATS, *PJOBOBJECT_IO_ATTRIBUTION_STATS;
+//
+type JOBOBJECT_IO_ATTRIBUTION_STATS struct {
+	IoCount                       uintptr
+	TotalNonOverlappedQueueTime   uint64
+	TotalNonOverlappedServiceTime uint64
+	TotalSize                     uint64
+}
+
+// typedef struct _JOBOBJECT_IO_ATTRIBUTION_INFORMATION {
+//     ULONG ControlFlags;
+//     JOBOBJECT_IO_ATTRIBUTION_STATS ReadStats;
+//     JOBOBJECT_IO_ATTRIBUTION_STATS WriteStats;
+// } JOBOBJECT_IO_ATTRIBUTION_INFORMATION, *PJOBOBJECT_IO_ATTRIBUTION_INFORMATION;
+//
+type JOBOBJECT_IO_ATTRIBUTION_INFORMATION struct {
+	ControlFlags uint32
+	ReadStats    JOBOBJECT_IO_ATTRIBUTION_STATS
+	WriteStats   JOBOBJECT_IO_ATTRIBUTION_STATS
+}
+
 // https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-jobobject_associate_completion_port
 type JOBOBJECT_ASSOCIATE_COMPLETION_PORT struct {
-	CompletionKey  uintptr
+	CompletionKey  windows.Handle
 	CompletionPort windows.Handle
 }
 
@@ -118,3 +188,28 @@ type JOBOBJECT_ASSOCIATE_COMPLETION_PORT struct {
 // );
 //
 //sys SetIoRateControlInformationJobObject(jobHandle windows.Handle, ioRateControlInfo *JOBOBJECT_IO_RATE_CONTROL_INFORMATION) (ret uint32, err error) = kernel32.SetIoRateControlInformationJobObject
+
+// DWORD QueryIoRateControlInformationJobObject(
+// 		HANDLE                                hJob,
+// 		PCWSTR                                VolumeName,
+//		JOBOBJECT_IO_RATE_CONTROL_INFORMATION **InfoBlocks,
+// 		ULONG                                 *InfoBlockCount
+// );
+//sys QueryIoRateControlInformationJobObject(jobHandle windows.Handle, volumeName *uint16, ioRateControlInfo **JOBOBJECT_IO_RATE_CONTROL_INFORMATION, infoBlockCount *uint32) (ret uint32, err error) = kernel32.QueryIoRateControlInformationJobObject
+
+// NTSTATUS
+// NtOpenJobObject (
+//     _Out_ PHANDLE JobHandle,
+//     _In_ ACCESS_MASK DesiredAccess,
+//     _In_ POBJECT_ATTRIBUTES ObjectAttributes
+// );
+//sys NtOpenJobObject(jobHandle *windows.Handle, desiredAccess uint32, objAttributes *ObjectAttributes) (status uint32) = ntdll.NtOpenJobObject
+
+// NTSTATUS
+// NTAPI
+// NtCreateJobObject (
+//     _Out_ PHANDLE JobHandle,
+//     _In_ ACCESS_MASK DesiredAccess,
+//     _In_opt_ POBJECT_ATTRIBUTES ObjectAttributes
+// );
+//sys NtCreateJobObject(jobHandle *windows.Handle, desiredAccess uint32, objAttributes *ObjectAttributes) (status uint32) = ntdll.NtCreateJobObject

vendor/github.com/Microsoft/hcsshim/internal/winapi/net.go

@@ -0,0 +1,3 @@
+package winapi
+
+//sys SetJobCompartmentId(handle windows.Handle, compartmentId uint32) (win32Err error) = iphlpapi.SetJobCompartmentId

vendor/github.com/Microsoft/hcsshim/internal/winapi/utils.go

@@ -2,11 +2,24 @@ package winapi
 
 import (
 	"errors"
+	"reflect"
 	"syscall"
-	"unicode/utf16"
 	"unsafe"
+
+	"golang.org/x/sys/windows"
 )
 
+// Uint16BufferToSlice wraps a uint16 pointer-and-length into a slice
+// for easier interop with Go APIs
+func Uint16BufferToSlice(buffer *uint16, bufferLength int) (result []uint16) {
+	hdr := (*reflect.SliceHeader)(unsafe.Pointer(&result))
+	hdr.Data = uintptr(unsafe.Pointer(buffer))
+	hdr.Cap = bufferLength
+	hdr.Len = bufferLength
+
+	return
+}
+
 type UnicodeString struct {
 	Length        uint16
 	MaximumLength uint16
@@ -15,28 +28,30 @@ type UnicodeString struct {
 
 //String converts a UnicodeString to a golang string
 func (uni UnicodeString) String() string {
-	p := (*[0xffff]uint16)(unsafe.Pointer(uni.Buffer))
-
 	// UnicodeString is not guaranteed to be null terminated, therefore
 	// use the UnicodeString's Length field
-	lengthInChars := uni.Length / 2
-	return syscall.UTF16ToString(p[:lengthInChars])
+	return syscall.UTF16ToString(Uint16BufferToSlice(uni.Buffer, int(uni.Length/2)))
 }
 
 // NewUnicodeString allocates a new UnicodeString and copies `s` into
 // the buffer of the new UnicodeString.
 func NewUnicodeString(s string) (*UnicodeString, error) {
-	ws := utf16.Encode(([]rune)(s))
-	if len(ws) > 32767 {
+	// Get length of original `s` to use in the UnicodeString since the `buf`
+	// created later will have an additional trailing null character
+	length := len(s)
+	if length > 32767 {
 		return nil, syscall.ENAMETOOLONG
 	}
 
-	uni := &UnicodeString{
-		Length:        uint16(len(ws) * 2),
-		MaximumLength: uint16(len(ws) * 2),
-		Buffer:        &make([]uint16, len(ws))[0],
+	buf, err := windows.UTF16FromString(s)
+	if err != nil {
+		return nil, err
+	}
+	uni := &UnicodeString{
+		Length:        uint16(length * 2),
+		MaximumLength: uint16(length * 2),
+		Buffer:        &buf[0],
 	}
-	copy((*[32768]uint16)(unsafe.Pointer(uni.Buffer))[:], ws)
 	return uni, nil
 }
 

vendor/github.com/Microsoft/hcsshim/internal/winapi/winapi.go

@@ -2,4 +2,4 @@
 // be thought of as an extension to golang.org/x/sys/windows.
 package winapi
 
-//go:generate go run ..\..\mksyscall_windows.go -output zsyscall_windows.go jobobject.go path.go logon.go memory.go processor.go devices.go filesystem.go errors.go
+//go:generate go run ..\..\mksyscall_windows.go -output zsyscall_windows.go net.go iocp.go jobobject.go path.go logon.go memory.go processor.go devices.go filesystem.go errors.go

vendor/github.com/Microsoft/hcsshim/internal/winapi/zsyscall_windows.go

@@ -37,32 +37,58 @@ func errnoErr(e syscall.Errno) error {
 }
 
 var (
+	modiphlpapi = windows.NewLazySystemDLL("iphlpapi.dll")
 	modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
+	modntdll    = windows.NewLazySystemDLL("ntdll.dll")
 	modadvapi32 = windows.NewLazySystemDLL("advapi32.dll")
 	modcfgmgr32 = windows.NewLazySystemDLL("cfgmgr32.dll")
-	modntdll    = windows.NewLazySystemDLL("ntdll.dll")
 
-	procIsProcessInJob                       = modkernel32.NewProc("IsProcessInJob")
-	procQueryInformationJobObject            = modkernel32.NewProc("QueryInformationJobObject")
-	procOpenJobObjectW                       = modkernel32.NewProc("OpenJobObjectW")
-	procSetIoRateControlInformationJobObject = modkernel32.NewProc("SetIoRateControlInformationJobObject")
-	procSearchPathW                          = modkernel32.NewProc("SearchPathW")
-	procLogonUserW                           = modadvapi32.NewProc("LogonUserW")
-	procRtlMoveMemory                        = modkernel32.NewProc("RtlMoveMemory")
-	procLocalAlloc                           = modkernel32.NewProc("LocalAlloc")
-	procLocalFree                            = modkernel32.NewProc("LocalFree")
-	procGetActiveProcessorCount              = modkernel32.NewProc("GetActiveProcessorCount")
-	procCM_Get_Device_ID_List_SizeA          = modcfgmgr32.NewProc("CM_Get_Device_ID_List_SizeA")
-	procCM_Get_Device_ID_ListA               = modcfgmgr32.NewProc("CM_Get_Device_ID_ListA")
-	procCM_Locate_DevNodeW                   = modcfgmgr32.NewProc("CM_Locate_DevNodeW")
-	procCM_Get_DevNode_PropertyW             = modcfgmgr32.NewProc("CM_Get_DevNode_PropertyW")
-	procNtCreateFile                         = modntdll.NewProc("NtCreateFile")
-	procNtSetInformationFile                 = modntdll.NewProc("NtSetInformationFile")
-	procNtOpenDirectoryObject                = modntdll.NewProc("NtOpenDirectoryObject")
-	procNtQueryDirectoryObject               = modntdll.NewProc("NtQueryDirectoryObject")
-	procRtlNtStatusToDosError                = modntdll.NewProc("RtlNtStatusToDosError")
+	procSetJobCompartmentId                    = modiphlpapi.NewProc("SetJobCompartmentId")
+	procGetQueuedCompletionStatus              = modkernel32.NewProc("GetQueuedCompletionStatus")
+	procIsProcessInJob                         = modkernel32.NewProc("IsProcessInJob")
+	procQueryInformationJobObject              = modkernel32.NewProc("QueryInformationJobObject")
+	procOpenJobObjectW                         = modkernel32.NewProc("OpenJobObjectW")
+	procSetIoRateControlInformationJobObject   = modkernel32.NewProc("SetIoRateControlInformationJobObject")
+	procQueryIoRateControlInformationJobObject = modkernel32.NewProc("QueryIoRateControlInformationJobObject")
+	procNtOpenJobObject                        = modntdll.NewProc("NtOpenJobObject")
+	procNtCreateJobObject                      = modntdll.NewProc("NtCreateJobObject")
+	procSearchPathW                            = modkernel32.NewProc("SearchPathW")
+	procLogonUserW                             = modadvapi32.NewProc("LogonUserW")
+	procRtlMoveMemory                          = modkernel32.NewProc("RtlMoveMemory")
+	procLocalAlloc                             = modkernel32.NewProc("LocalAlloc")
+	procLocalFree                              = modkernel32.NewProc("LocalFree")
+	procGetActiveProcessorCount                = modkernel32.NewProc("GetActiveProcessorCount")
+	procCM_Get_Device_ID_List_SizeA            = modcfgmgr32.NewProc("CM_Get_Device_ID_List_SizeA")
+	procCM_Get_Device_ID_ListA                 = modcfgmgr32.NewProc("CM_Get_Device_ID_ListA")
+	procCM_Locate_DevNodeW                     = modcfgmgr32.NewProc("CM_Locate_DevNodeW")
+	procCM_Get_DevNode_PropertyW               = modcfgmgr32.NewProc("CM_Get_DevNode_PropertyW")
+	procNtCreateFile                           = modntdll.NewProc("NtCreateFile")
+	procNtSetInformationFile                   = modntdll.NewProc("NtSetInformationFile")
+	procNtOpenDirectoryObject                  = modntdll.NewProc("NtOpenDirectoryObject")
+	procNtQueryDirectoryObject                 = modntdll.NewProc("NtQueryDirectoryObject")
+	procRtlNtStatusToDosError                  = modntdll.NewProc("RtlNtStatusToDosError")
 )
 
+func SetJobCompartmentId(handle windows.Handle, compartmentId uint32) (win32Err error) {
+	r0, _, _ := syscall.Syscall(procSetJobCompartmentId.Addr(), 2, uintptr(handle), uintptr(compartmentId), 0)
+	if r0 != 0 {
+		win32Err = syscall.Errno(r0)
+	}
+	return
+}
+
+func GetQueuedCompletionStatus(cphandle windows.Handle, qty *uint32, key *uintptr, overlapped **windows.Overlapped, timeout uint32) (err error) {
+	r1, _, e1 := syscall.Syscall6(procGetQueuedCompletionStatus.Addr(), 5, uintptr(cphandle), uintptr(unsafe.Pointer(qty)), uintptr(unsafe.Pointer(key)), uintptr(unsafe.Pointer(overlapped)), uintptr(timeout), 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
 func IsProcessInJob(procHandle windows.Handle, jobHandle windows.Handle, result *bool) (err error) {
 	r1, _, e1 := syscall.Syscall(procIsProcessInJob.Addr(), 3, uintptr(procHandle), uintptr(jobHandle), uintptr(unsafe.Pointer(result)))
 	if r1 == 0 {
@@ -119,6 +145,31 @@ func SetIoRateControlInformationJobObject(jobHandle windows.Handle, ioRateContro
 	return
 }
 
+func QueryIoRateControlInformationJobObject(jobHandle windows.Handle, volumeName *uint16, ioRateControlInfo **JOBOBJECT_IO_RATE_CONTROL_INFORMATION, infoBlockCount *uint32) (ret uint32, err error) {
+	r0, _, e1 := syscall.Syscall6(procQueryIoRateControlInformationJobObject.Addr(), 4, uintptr(jobHandle), uintptr(unsafe.Pointer(volumeName)), uintptr(unsafe.Pointer(ioRateControlInfo)), uintptr(unsafe.Pointer(infoBlockCount)), 0, 0)
+	ret = uint32(r0)
+	if ret == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func NtOpenJobObject(jobHandle *windows.Handle, desiredAccess uint32, objAttributes *ObjectAttributes) (status uint32) {
+	r0, _, _ := syscall.Syscall(procNtOpenJobObject.Addr(), 3, uintptr(unsafe.Pointer(jobHandle)), uintptr(desiredAccess), uintptr(unsafe.Pointer(objAttributes)))
+	status = uint32(r0)
+	return
+}
+
+func NtCreateJobObject(jobHandle *windows.Handle, desiredAccess uint32, objAttributes *ObjectAttributes) (status uint32) {
+	r0, _, _ := syscall.Syscall(procNtCreateJobObject.Addr(), 3, uintptr(unsafe.Pointer(jobHandle)), uintptr(desiredAccess), uintptr(unsafe.Pointer(objAttributes)))
+	status = uint32(r0)
+	return
+}
+
 func SearchPath(lpPath *uint16, lpFileName *uint16, lpExtension *uint16, nBufferLength uint32, lpBuffer *uint16, lpFilePath **uint16) (size uint32, err error) {
 	r0, _, e1 := syscall.Syscall6(procSearchPathW.Addr(), 6, uintptr(unsafe.Pointer(lpPath)), uintptr(unsafe.Pointer(lpFileName)), uintptr(unsafe.Pointer(lpExtension)), uintptr(nBufferLength), uintptr(unsafe.Pointer(lpBuffer)), uintptr(unsafe.Pointer(lpFilePath)))
 	size = uint32(r0)