1// Copyright 2009 The Go Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style 3// license that can be found in the LICENSE file. 4 5// Windows system calls. 6 7package windows 8 9import ( 10 errorspkg "errors" 11 "sync" 12 "syscall" 13 "time" 14 "unicode/utf16" 15 "unsafe" 16 17 "golang.org/x/sys/internal/unsafeheader" 18) 19 20type Handle uintptr 21 22const ( 23 InvalidHandle = ^Handle(0) 24 25 // Flags for DefineDosDevice. 26 DDD_EXACT_MATCH_ON_REMOVE = 0x00000004 27 DDD_NO_BROADCAST_SYSTEM = 0x00000008 28 DDD_RAW_TARGET_PATH = 0x00000001 29 DDD_REMOVE_DEFINITION = 0x00000002 30 31 // Return values for GetDriveType. 32 DRIVE_UNKNOWN = 0 33 DRIVE_NO_ROOT_DIR = 1 34 DRIVE_REMOVABLE = 2 35 DRIVE_FIXED = 3 36 DRIVE_REMOTE = 4 37 DRIVE_CDROM = 5 38 DRIVE_RAMDISK = 6 39 40 // File system flags from GetVolumeInformation and GetVolumeInformationByHandle. 41 FILE_CASE_SENSITIVE_SEARCH = 0x00000001 42 FILE_CASE_PRESERVED_NAMES = 0x00000002 43 FILE_FILE_COMPRESSION = 0x00000010 44 FILE_DAX_VOLUME = 0x20000000 45 FILE_NAMED_STREAMS = 0x00040000 46 FILE_PERSISTENT_ACLS = 0x00000008 47 FILE_READ_ONLY_VOLUME = 0x00080000 48 FILE_SEQUENTIAL_WRITE_ONCE = 0x00100000 49 FILE_SUPPORTS_ENCRYPTION = 0x00020000 50 FILE_SUPPORTS_EXTENDED_ATTRIBUTES = 0x00800000 51 FILE_SUPPORTS_HARD_LINKS = 0x00400000 52 FILE_SUPPORTS_OBJECT_IDS = 0x00010000 53 FILE_SUPPORTS_OPEN_BY_FILE_ID = 0x01000000 54 FILE_SUPPORTS_REPARSE_POINTS = 0x00000080 55 FILE_SUPPORTS_SPARSE_FILES = 0x00000040 56 FILE_SUPPORTS_TRANSACTIONS = 0x00200000 57 FILE_SUPPORTS_USN_JOURNAL = 0x02000000 58 FILE_UNICODE_ON_DISK = 0x00000004 59 FILE_VOLUME_IS_COMPRESSED = 0x00008000 60 FILE_VOLUME_QUOTAS = 0x00000020 61 62 // Flags for LockFileEx. 63 LOCKFILE_FAIL_IMMEDIATELY = 0x00000001 64 LOCKFILE_EXCLUSIVE_LOCK = 0x00000002 65 66 // Return values of SleepEx and other APC functions 67 STATUS_USER_APC = 0x000000C0 68 WAIT_IO_COMPLETION = STATUS_USER_APC 69) 70 71// StringToUTF16 is deprecated. Use UTF16FromString instead. 72// If s contains a NUL byte this function panics instead of 73// returning an error. 74func StringToUTF16(s string) []uint16 { 75 a, err := UTF16FromString(s) 76 if err != nil { 77 panic("windows: string with NUL passed to StringToUTF16") 78 } 79 return a 80} 81 82// UTF16FromString returns the UTF-16 encoding of the UTF-8 string 83// s, with a terminating NUL added. If s contains a NUL byte at any 84// location, it returns (nil, syscall.EINVAL). 85func UTF16FromString(s string) ([]uint16, error) { 86 for i := 0; i < len(s); i++ { 87 if s[i] == 0 { 88 return nil, syscall.EINVAL 89 } 90 } 91 return utf16.Encode([]rune(s + "\x00")), nil 92} 93 94// UTF16ToString returns the UTF-8 encoding of the UTF-16 sequence s, 95// with a terminating NUL removed. 96func UTF16ToString(s []uint16) string { 97 for i, v := range s { 98 if v == 0 { 99 s = s[0:i] 100 break 101 } 102 } 103 return string(utf16.Decode(s)) 104} 105 106// StringToUTF16Ptr is deprecated. Use UTF16PtrFromString instead. 107// If s contains a NUL byte this function panics instead of 108// returning an error. 109func StringToUTF16Ptr(s string) *uint16 { return &StringToUTF16(s)[0] } 110 111// UTF16PtrFromString returns pointer to the UTF-16 encoding of 112// the UTF-8 string s, with a terminating NUL added. If s 113// contains a NUL byte at any location, it returns (nil, syscall.EINVAL). 114func UTF16PtrFromString(s string) (*uint16, error) { 115 a, err := UTF16FromString(s) 116 if err != nil { 117 return nil, err 118 } 119 return &a[0], nil 120} 121 122// UTF16PtrToString takes a pointer to a UTF-16 sequence and returns the corresponding UTF-8 encoded string. 123// If the pointer is nil, this returns the empty string. This assumes that the UTF-16 sequence is terminated 124// at a zero word; if the zero word is not present, the program may crash. 125func UTF16PtrToString(p *uint16) string { 126 if p == nil { 127 return "" 128 } 129 if *p == 0 { 130 return "" 131 } 132 133 // Find NUL terminator. 134 n := 0 135 for ptr := unsafe.Pointer(p); *(*uint16)(ptr) != 0; n++ { 136 ptr = unsafe.Pointer(uintptr(ptr) + unsafe.Sizeof(*p)) 137 } 138 139 var s []uint16 140 h := (*unsafeheader.Slice)(unsafe.Pointer(&s)) 141 h.Data = unsafe.Pointer(p) 142 h.Len = n 143 h.Cap = n 144 145 return string(utf16.Decode(s)) 146} 147 148func Getpagesize() int { return 4096 } 149 150// NewCallback converts a Go function to a function pointer conforming to the stdcall calling convention. 151// This is useful when interoperating with Windows code requiring callbacks. 152// The argument is expected to be a function with with one uintptr-sized result. The function must not have arguments with size larger than the size of uintptr. 153func NewCallback(fn interface{}) uintptr { 154 return syscall.NewCallback(fn) 155} 156 157// NewCallbackCDecl converts a Go function to a function pointer conforming to the cdecl calling convention. 158// This is useful when interoperating with Windows code requiring callbacks. 159// The argument is expected to be a function with with one uintptr-sized result. The function must not have arguments with size larger than the size of uintptr. 160func NewCallbackCDecl(fn interface{}) uintptr { 161 return syscall.NewCallbackCDecl(fn) 162} 163 164// windows api calls 165 166//sys GetLastError() (lasterr error) 167//sys LoadLibrary(libname string) (handle Handle, err error) = LoadLibraryW 168//sys LoadLibraryEx(libname string, zero Handle, flags uintptr) (handle Handle, err error) = LoadLibraryExW 169//sys FreeLibrary(handle Handle) (err error) 170//sys GetProcAddress(module Handle, procname string) (proc uintptr, err error) 171//sys GetModuleFileName(module Handle, filename *uint16, size uint32) (n uint32, err error) = kernel32.GetModuleFileNameW 172//sys GetModuleHandleEx(flags uint32, moduleName *uint16, module *Handle) (err error) = kernel32.GetModuleHandleExW 173//sys GetVersion() (ver uint32, err error) 174//sys FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW 175//sys ExitProcess(exitcode uint32) 176//sys IsWow64Process(handle Handle, isWow64 *bool) (err error) = IsWow64Process 177//sys CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile Handle) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW 178//sys ReadFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) 179//sys WriteFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) 180//sys GetOverlappedResult(handle Handle, overlapped *Overlapped, done *uint32, wait bool) (err error) 181//sys SetFilePointer(handle Handle, lowoffset int32, highoffsetptr *int32, whence uint32) (newlowoffset uint32, err error) [failretval==0xffffffff] 182//sys CloseHandle(handle Handle) (err error) 183//sys GetStdHandle(stdhandle uint32) (handle Handle, err error) [failretval==InvalidHandle] 184//sys SetStdHandle(stdhandle uint32, handle Handle) (err error) 185//sys findFirstFile1(name *uint16, data *win32finddata1) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstFileW 186//sys findNextFile1(handle Handle, data *win32finddata1) (err error) = FindNextFileW 187//sys FindClose(handle Handle) (err error) 188//sys GetFileInformationByHandle(handle Handle, data *ByHandleFileInformation) (err error) 189//sys GetFileInformationByHandleEx(handle Handle, class uint32, outBuffer *byte, outBufferLen uint32) (err error) 190//sys GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, err error) = GetCurrentDirectoryW 191//sys SetCurrentDirectory(path *uint16) (err error) = SetCurrentDirectoryW 192//sys CreateDirectory(path *uint16, sa *SecurityAttributes) (err error) = CreateDirectoryW 193//sys RemoveDirectory(path *uint16) (err error) = RemoveDirectoryW 194//sys DeleteFile(path *uint16) (err error) = DeleteFileW 195//sys MoveFile(from *uint16, to *uint16) (err error) = MoveFileW 196//sys MoveFileEx(from *uint16, to *uint16, flags uint32) (err error) = MoveFileExW 197//sys LockFileEx(file Handle, flags uint32, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *Overlapped) (err error) 198//sys UnlockFileEx(file Handle, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *Overlapped) (err error) 199//sys GetComputerName(buf *uint16, n *uint32) (err error) = GetComputerNameW 200//sys GetComputerNameEx(nametype uint32, buf *uint16, n *uint32) (err error) = GetComputerNameExW 201//sys SetEndOfFile(handle Handle) (err error) 202//sys GetSystemTimeAsFileTime(time *Filetime) 203//sys GetSystemTimePreciseAsFileTime(time *Filetime) 204//sys GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff] 205//sys CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uint32, threadcnt uint32) (handle Handle, err error) 206//sys GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uint32, overlapped **Overlapped, timeout uint32) (err error) 207//sys PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uint32, overlapped *Overlapped) (err error) 208//sys CancelIo(s Handle) (err error) 209//sys CancelIoEx(s Handle, o *Overlapped) (err error) 210//sys CreateProcess(appName *uint16, commandLine *uint16, procSecurity *SecurityAttributes, threadSecurity *SecurityAttributes, inheritHandles bool, creationFlags uint32, env *uint16, currentDir *uint16, startupInfo *StartupInfo, outProcInfo *ProcessInformation) (err error) = CreateProcessW 211//sys OpenProcess(desiredAccess uint32, inheritHandle bool, processId uint32) (handle Handle, err error) 212//sys ShellExecute(hwnd Handle, verb *uint16, file *uint16, args *uint16, cwd *uint16, showCmd int32) (err error) [failretval<=32] = shell32.ShellExecuteW 213//sys shGetKnownFolderPath(id *KNOWNFOLDERID, flags uint32, token Token, path **uint16) (ret error) = shell32.SHGetKnownFolderPath 214//sys TerminateProcess(handle Handle, exitcode uint32) (err error) 215//sys GetExitCodeProcess(handle Handle, exitcode *uint32) (err error) 216//sys GetStartupInfo(startupInfo *StartupInfo) (err error) = GetStartupInfoW 217//sys GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error) 218//sys DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error) 219//sys WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] 220//sys waitForMultipleObjects(count uint32, handles uintptr, waitAll bool, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] = WaitForMultipleObjects 221//sys GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW 222//sys CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error) 223//sys GetFileType(filehandle Handle) (n uint32, err error) 224//sys CryptAcquireContext(provhandle *Handle, container *uint16, provider *uint16, provtype uint32, flags uint32) (err error) = advapi32.CryptAcquireContextW 225//sys CryptReleaseContext(provhandle Handle, flags uint32) (err error) = advapi32.CryptReleaseContext 226//sys CryptGenRandom(provhandle Handle, buflen uint32, buf *byte) (err error) = advapi32.CryptGenRandom 227//sys GetEnvironmentStrings() (envs *uint16, err error) [failretval==nil] = kernel32.GetEnvironmentStringsW 228//sys FreeEnvironmentStrings(envs *uint16) (err error) = kernel32.FreeEnvironmentStringsW 229//sys GetEnvironmentVariable(name *uint16, buffer *uint16, size uint32) (n uint32, err error) = kernel32.GetEnvironmentVariableW 230//sys SetEnvironmentVariable(name *uint16, value *uint16) (err error) = kernel32.SetEnvironmentVariableW 231//sys CreateEnvironmentBlock(block **uint16, token Token, inheritExisting bool) (err error) = userenv.CreateEnvironmentBlock 232//sys DestroyEnvironmentBlock(block *uint16) (err error) = userenv.DestroyEnvironmentBlock 233//sys getTickCount64() (ms uint64) = kernel32.GetTickCount64 234//sys SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error) 235//sys GetFileAttributes(name *uint16) (attrs uint32, err error) [failretval==INVALID_FILE_ATTRIBUTES] = kernel32.GetFileAttributesW 236//sys SetFileAttributes(name *uint16, attrs uint32) (err error) = kernel32.SetFileAttributesW 237//sys GetFileAttributesEx(name *uint16, level uint32, info *byte) (err error) = kernel32.GetFileAttributesExW 238//sys GetCommandLine() (cmd *uint16) = kernel32.GetCommandLineW 239//sys CommandLineToArgv(cmd *uint16, argc *int32) (argv *[8192]*[8192]uint16, err error) [failretval==nil] = shell32.CommandLineToArgvW 240//sys LocalFree(hmem Handle) (handle Handle, err error) [failretval!=0] 241//sys SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error) 242//sys FlushFileBuffers(handle Handle) (err error) 243//sys GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, err error) = kernel32.GetFullPathNameW 244//sys GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err error) = kernel32.GetLongPathNameW 245//sys GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW 246//sys CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) = kernel32.CreateFileMappingW 247//sys MapViewOfFile(handle Handle, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, err error) 248//sys UnmapViewOfFile(addr uintptr) (err error) 249//sys FlushViewOfFile(addr uintptr, length uintptr) (err error) 250//sys VirtualLock(addr uintptr, length uintptr) (err error) 251//sys VirtualUnlock(addr uintptr, length uintptr) (err error) 252//sys VirtualAlloc(address uintptr, size uintptr, alloctype uint32, protect uint32) (value uintptr, err error) = kernel32.VirtualAlloc 253//sys VirtualFree(address uintptr, size uintptr, freetype uint32) (err error) = kernel32.VirtualFree 254//sys VirtualProtect(address uintptr, size uintptr, newprotect uint32, oldprotect *uint32) (err error) = kernel32.VirtualProtect 255//sys TransmitFile(s Handle, handle Handle, bytesToWrite uint32, bytsPerSend uint32, overlapped *Overlapped, transmitFileBuf *TransmitFileBuffers, flags uint32) (err error) = mswsock.TransmitFile 256//sys ReadDirectoryChanges(handle Handle, buf *byte, buflen uint32, watchSubTree bool, mask uint32, retlen *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) = kernel32.ReadDirectoryChangesW 257//sys CertOpenSystemStore(hprov Handle, name *uint16) (store Handle, err error) = crypt32.CertOpenSystemStoreW 258//sys CertOpenStore(storeProvider uintptr, msgAndCertEncodingType uint32, cryptProv uintptr, flags uint32, para uintptr) (handle Handle, err error) [failretval==InvalidHandle] = crypt32.CertOpenStore 259//sys CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) [failretval==nil] = crypt32.CertEnumCertificatesInStore 260//sys CertAddCertificateContextToStore(store Handle, certContext *CertContext, addDisposition uint32, storeContext **CertContext) (err error) = crypt32.CertAddCertificateContextToStore 261//sys CertCloseStore(store Handle, flags uint32) (err error) = crypt32.CertCloseStore 262//sys CertGetCertificateChain(engine Handle, leaf *CertContext, time *Filetime, additionalStore Handle, para *CertChainPara, flags uint32, reserved uintptr, chainCtx **CertChainContext) (err error) = crypt32.CertGetCertificateChain 263//sys CertFreeCertificateChain(ctx *CertChainContext) = crypt32.CertFreeCertificateChain 264//sys CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, encodedLen uint32) (context *CertContext, err error) [failretval==nil] = crypt32.CertCreateCertificateContext 265//sys CertFreeCertificateContext(ctx *CertContext) (err error) = crypt32.CertFreeCertificateContext 266//sys CertVerifyCertificateChainPolicy(policyOID uintptr, chain *CertChainContext, para *CertChainPolicyPara, status *CertChainPolicyStatus) (err error) = crypt32.CertVerifyCertificateChainPolicy 267//sys RegOpenKeyEx(key Handle, subkey *uint16, options uint32, desiredAccess uint32, result *Handle) (regerrno error) = advapi32.RegOpenKeyExW 268//sys RegCloseKey(key Handle) (regerrno error) = advapi32.RegCloseKey 269//sys RegQueryInfoKey(key Handle, class *uint16, classLen *uint32, reserved *uint32, subkeysLen *uint32, maxSubkeyLen *uint32, maxClassLen *uint32, valuesLen *uint32, maxValueNameLen *uint32, maxValueLen *uint32, saLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegQueryInfoKeyW 270//sys RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW 271//sys RegQueryValueEx(key Handle, name *uint16, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegQueryValueExW 272//sys GetCurrentProcessId() (pid uint32) = kernel32.GetCurrentProcessId 273//sys GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode 274//sys SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode 275//sys GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo 276//sys WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW 277//sys ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW 278//sys CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot 279//sys Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32FirstW 280//sys Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32NextW 281//sys Thread32First(snapshot Handle, threadEntry *ThreadEntry32) (err error) 282//sys Thread32Next(snapshot Handle, threadEntry *ThreadEntry32) (err error) 283//sys DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBufferSize uint32, outBuffer *byte, outBufferSize uint32, bytesReturned *uint32, overlapped *Overlapped) (err error) 284// This function returns 1 byte BOOLEAN rather than the 4 byte BOOL. 285//sys CreateSymbolicLink(symlinkfilename *uint16, targetfilename *uint16, flags uint32) (err error) [failretval&0xff==0] = CreateSymbolicLinkW 286//sys CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr) (err error) [failretval&0xff==0] = CreateHardLinkW 287//sys GetCurrentThreadId() (id uint32) 288//sys CreateEvent(eventAttrs *SecurityAttributes, manualReset uint32, initialState uint32, name *uint16) (handle Handle, err error) = kernel32.CreateEventW 289//sys CreateEventEx(eventAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) = kernel32.CreateEventExW 290//sys OpenEvent(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenEventW 291//sys SetEvent(event Handle) (err error) = kernel32.SetEvent 292//sys ResetEvent(event Handle) (err error) = kernel32.ResetEvent 293//sys PulseEvent(event Handle) (err error) = kernel32.PulseEvent 294//sys CreateMutex(mutexAttrs *SecurityAttributes, initialOwner bool, name *uint16) (handle Handle, err error) = kernel32.CreateMutexW 295//sys CreateMutexEx(mutexAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) = kernel32.CreateMutexExW 296//sys OpenMutex(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenMutexW 297//sys ReleaseMutex(mutex Handle) (err error) = kernel32.ReleaseMutex 298//sys SleepEx(milliseconds uint32, alertable bool) (ret uint32) = kernel32.SleepEx 299//sys CreateJobObject(jobAttr *SecurityAttributes, name *uint16) (handle Handle, err error) = kernel32.CreateJobObjectW 300//sys AssignProcessToJobObject(job Handle, process Handle) (err error) = kernel32.AssignProcessToJobObject 301//sys TerminateJobObject(job Handle, exitCode uint32) (err error) = kernel32.TerminateJobObject 302//sys SetErrorMode(mode uint32) (ret uint32) = kernel32.SetErrorMode 303//sys ResumeThread(thread Handle) (ret uint32, err error) [failretval==0xffffffff] = kernel32.ResumeThread 304//sys SetPriorityClass(process Handle, priorityClass uint32) (err error) = kernel32.SetPriorityClass 305//sys GetPriorityClass(process Handle) (ret uint32, err error) = kernel32.GetPriorityClass 306//sys SetInformationJobObject(job Handle, JobObjectInformationClass uint32, JobObjectInformation uintptr, JobObjectInformationLength uint32) (ret int, err error) 307//sys GenerateConsoleCtrlEvent(ctrlEvent uint32, processGroupID uint32) (err error) 308//sys GetProcessId(process Handle) (id uint32, err error) 309//sys OpenThread(desiredAccess uint32, inheritHandle bool, threadId uint32) (handle Handle, err error) 310//sys SetProcessPriorityBoost(process Handle, disable bool) (err error) = kernel32.SetProcessPriorityBoost 311//sys GetProcessWorkingSetSizeEx(hProcess Handle, lpMinimumWorkingSetSize *uintptr, lpMaximumWorkingSetSize *uintptr, flags *uint32) 312//sys SetProcessWorkingSetSizeEx(hProcess Handle, dwMinimumWorkingSetSize uintptr, dwMaximumWorkingSetSize uintptr, flags uint32) (err error) 313 314// Volume Management Functions 315//sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW 316//sys DeleteVolumeMountPoint(volumeMountPoint *uint16) (err error) = DeleteVolumeMountPointW 317//sys FindFirstVolume(volumeName *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeW 318//sys FindFirstVolumeMountPoint(rootPathName *uint16, volumeMountPoint *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeMountPointW 319//sys FindNextVolume(findVolume Handle, volumeName *uint16, bufferLength uint32) (err error) = FindNextVolumeW 320//sys FindNextVolumeMountPoint(findVolumeMountPoint Handle, volumeMountPoint *uint16, bufferLength uint32) (err error) = FindNextVolumeMountPointW 321//sys FindVolumeClose(findVolume Handle) (err error) 322//sys FindVolumeMountPointClose(findVolumeMountPoint Handle) (err error) 323//sys GetDiskFreeSpaceEx(directoryName *uint16, freeBytesAvailableToCaller *uint64, totalNumberOfBytes *uint64, totalNumberOfFreeBytes *uint64) (err error) = GetDiskFreeSpaceExW 324//sys GetDriveType(rootPathName *uint16) (driveType uint32) = GetDriveTypeW 325//sys GetLogicalDrives() (drivesBitMask uint32, err error) [failretval==0] 326//sys GetLogicalDriveStrings(bufferLength uint32, buffer *uint16) (n uint32, err error) [failretval==0] = GetLogicalDriveStringsW 327//sys GetVolumeInformation(rootPathName *uint16, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationW 328//sys GetVolumeInformationByHandle(file Handle, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationByHandleW 329//sys GetVolumeNameForVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16, bufferlength uint32) (err error) = GetVolumeNameForVolumeMountPointW 330//sys GetVolumePathName(fileName *uint16, volumePathName *uint16, bufferLength uint32) (err error) = GetVolumePathNameW 331//sys GetVolumePathNamesForVolumeName(volumeName *uint16, volumePathNames *uint16, bufferLength uint32, returnLength *uint32) (err error) = GetVolumePathNamesForVolumeNameW 332//sys QueryDosDevice(deviceName *uint16, targetPath *uint16, max uint32) (n uint32, err error) [failretval==0] = QueryDosDeviceW 333//sys SetVolumeLabel(rootPathName *uint16, volumeName *uint16) (err error) = SetVolumeLabelW 334//sys SetVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16) (err error) = SetVolumeMountPointW 335//sys MessageBox(hwnd Handle, text *uint16, caption *uint16, boxtype uint32) (ret int32, err error) [failretval==0] = user32.MessageBoxW 336//sys ExitWindowsEx(flags uint32, reason uint32) (err error) = user32.ExitWindowsEx 337//sys InitiateSystemShutdownEx(machineName *uint16, message *uint16, timeout uint32, forceAppsClosed bool, rebootAfterShutdown bool, reason uint32) (err error) = advapi32.InitiateSystemShutdownExW 338//sys SetProcessShutdownParameters(level uint32, flags uint32) (err error) = kernel32.SetProcessShutdownParameters 339//sys GetProcessShutdownParameters(level *uint32, flags *uint32) (err error) = kernel32.GetProcessShutdownParameters 340//sys clsidFromString(lpsz *uint16, pclsid *GUID) (ret error) = ole32.CLSIDFromString 341//sys stringFromGUID2(rguid *GUID, lpsz *uint16, cchMax int32) (chars int32) = ole32.StringFromGUID2 342//sys coCreateGuid(pguid *GUID) (ret error) = ole32.CoCreateGuid 343//sys CoTaskMemFree(address unsafe.Pointer) = ole32.CoTaskMemFree 344//sys rtlGetVersion(info *OsVersionInfoEx) (ret error) = ntdll.RtlGetVersion 345//sys rtlGetNtVersionNumbers(majorVersion *uint32, minorVersion *uint32, buildNumber *uint32) = ntdll.RtlGetNtVersionNumbers 346//sys getProcessPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetProcessPreferredUILanguages 347//sys getThreadPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetThreadPreferredUILanguages 348//sys getUserPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetUserPreferredUILanguages 349//sys getSystemPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetSystemPreferredUILanguages 350 351// Process Status API (PSAPI) 352//sys EnumProcesses(processIds []uint32, bytesReturned *uint32) (err error) = psapi.EnumProcesses 353 354// syscall interface implementation for other packages 355 356// GetCurrentProcess returns the handle for the current process. 357// It is a pseudo handle that does not need to be closed. 358// The returned error is always nil. 359// 360// Deprecated: use CurrentProcess for the same Handle without the nil 361// error. 362func GetCurrentProcess() (Handle, error) { 363 return CurrentProcess(), nil 364} 365 366// CurrentProcess returns the handle for the current process. 367// It is a pseudo handle that does not need to be closed. 368func CurrentProcess() Handle { return Handle(^uintptr(1 - 1)) } 369 370// GetCurrentThread returns the handle for the current thread. 371// It is a pseudo handle that does not need to be closed. 372// The returned error is always nil. 373// 374// Deprecated: use CurrentThread for the same Handle without the nil 375// error. 376func GetCurrentThread() (Handle, error) { 377 return CurrentThread(), nil 378} 379 380// CurrentThread returns the handle for the current thread. 381// It is a pseudo handle that does not need to be closed. 382func CurrentThread() Handle { return Handle(^uintptr(2 - 1)) } 383 384// GetProcAddressByOrdinal retrieves the address of the exported 385// function from module by ordinal. 386func GetProcAddressByOrdinal(module Handle, ordinal uintptr) (proc uintptr, err error) { 387 r0, _, e1 := syscall.Syscall(procGetProcAddress.Addr(), 2, uintptr(module), ordinal, 0) 388 proc = uintptr(r0) 389 if proc == 0 { 390 if e1 != 0 { 391 err = errnoErr(e1) 392 } else { 393 err = syscall.EINVAL 394 } 395 } 396 return 397} 398 399func Exit(code int) { ExitProcess(uint32(code)) } 400 401func makeInheritSa() *SecurityAttributes { 402 var sa SecurityAttributes 403 sa.Length = uint32(unsafe.Sizeof(sa)) 404 sa.InheritHandle = 1 405 return &sa 406} 407 408func Open(path string, mode int, perm uint32) (fd Handle, err error) { 409 if len(path) == 0 { 410 return InvalidHandle, ERROR_FILE_NOT_FOUND 411 } 412 pathp, err := UTF16PtrFromString(path) 413 if err != nil { 414 return InvalidHandle, err 415 } 416 var access uint32 417 switch mode & (O_RDONLY | O_WRONLY | O_RDWR) { 418 case O_RDONLY: 419 access = GENERIC_READ 420 case O_WRONLY: 421 access = GENERIC_WRITE 422 case O_RDWR: 423 access = GENERIC_READ | GENERIC_WRITE 424 } 425 if mode&O_CREAT != 0 { 426 access |= GENERIC_WRITE 427 } 428 if mode&O_APPEND != 0 { 429 access &^= GENERIC_WRITE 430 access |= FILE_APPEND_DATA 431 } 432 sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE) 433 var sa *SecurityAttributes 434 if mode&O_CLOEXEC == 0 { 435 sa = makeInheritSa() 436 } 437 var createmode uint32 438 switch { 439 case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL): 440 createmode = CREATE_NEW 441 case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC): 442 createmode = CREATE_ALWAYS 443 case mode&O_CREAT == O_CREAT: 444 createmode = OPEN_ALWAYS 445 case mode&O_TRUNC == O_TRUNC: 446 createmode = TRUNCATE_EXISTING 447 default: 448 createmode = OPEN_EXISTING 449 } 450 var attrs uint32 = FILE_ATTRIBUTE_NORMAL 451 if perm&S_IWRITE == 0 { 452 attrs = FILE_ATTRIBUTE_READONLY 453 } 454 h, e := CreateFile(pathp, access, sharemode, sa, createmode, attrs, 0) 455 return h, e 456} 457 458func Read(fd Handle, p []byte) (n int, err error) { 459 var done uint32 460 e := ReadFile(fd, p, &done, nil) 461 if e != nil { 462 if e == ERROR_BROKEN_PIPE { 463 // NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin 464 return 0, nil 465 } 466 return 0, e 467 } 468 if raceenabled { 469 if done > 0 { 470 raceWriteRange(unsafe.Pointer(&p[0]), int(done)) 471 } 472 raceAcquire(unsafe.Pointer(&ioSync)) 473 } 474 return int(done), nil 475} 476 477func Write(fd Handle, p []byte) (n int, err error) { 478 if raceenabled { 479 raceReleaseMerge(unsafe.Pointer(&ioSync)) 480 } 481 var done uint32 482 e := WriteFile(fd, p, &done, nil) 483 if e != nil { 484 return 0, e 485 } 486 if raceenabled && done > 0 { 487 raceReadRange(unsafe.Pointer(&p[0]), int(done)) 488 } 489 return int(done), nil 490} 491 492var ioSync int64 493 494func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) { 495 var w uint32 496 switch whence { 497 case 0: 498 w = FILE_BEGIN 499 case 1: 500 w = FILE_CURRENT 501 case 2: 502 w = FILE_END 503 } 504 hi := int32(offset >> 32) 505 lo := int32(offset) 506 // use GetFileType to check pipe, pipe can't do seek 507 ft, _ := GetFileType(fd) 508 if ft == FILE_TYPE_PIPE { 509 return 0, syscall.EPIPE 510 } 511 rlo, e := SetFilePointer(fd, lo, &hi, w) 512 if e != nil { 513 return 0, e 514 } 515 return int64(hi)<<32 + int64(rlo), nil 516} 517 518func Close(fd Handle) (err error) { 519 return CloseHandle(fd) 520} 521 522var ( 523 Stdin = getStdHandle(STD_INPUT_HANDLE) 524 Stdout = getStdHandle(STD_OUTPUT_HANDLE) 525 Stderr = getStdHandle(STD_ERROR_HANDLE) 526) 527 528func getStdHandle(stdhandle uint32) (fd Handle) { 529 r, _ := GetStdHandle(stdhandle) 530 CloseOnExec(r) 531 return r 532} 533 534const ImplementsGetwd = true 535 536func Getwd() (wd string, err error) { 537 b := make([]uint16, 300) 538 n, e := GetCurrentDirectory(uint32(len(b)), &b[0]) 539 if e != nil { 540 return "", e 541 } 542 return string(utf16.Decode(b[0:n])), nil 543} 544 545func Chdir(path string) (err error) { 546 pathp, err := UTF16PtrFromString(path) 547 if err != nil { 548 return err 549 } 550 return SetCurrentDirectory(pathp) 551} 552 553func Mkdir(path string, mode uint32) (err error) { 554 pathp, err := UTF16PtrFromString(path) 555 if err != nil { 556 return err 557 } 558 return CreateDirectory(pathp, nil) 559} 560 561func Rmdir(path string) (err error) { 562 pathp, err := UTF16PtrFromString(path) 563 if err != nil { 564 return err 565 } 566 return RemoveDirectory(pathp) 567} 568 569func Unlink(path string) (err error) { 570 pathp, err := UTF16PtrFromString(path) 571 if err != nil { 572 return err 573 } 574 return DeleteFile(pathp) 575} 576 577func Rename(oldpath, newpath string) (err error) { 578 from, err := UTF16PtrFromString(oldpath) 579 if err != nil { 580 return err 581 } 582 to, err := UTF16PtrFromString(newpath) 583 if err != nil { 584 return err 585 } 586 return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING) 587} 588 589func ComputerName() (name string, err error) { 590 var n uint32 = MAX_COMPUTERNAME_LENGTH + 1 591 b := make([]uint16, n) 592 e := GetComputerName(&b[0], &n) 593 if e != nil { 594 return "", e 595 } 596 return string(utf16.Decode(b[0:n])), nil 597} 598 599func DurationSinceBoot() time.Duration { 600 return time.Duration(getTickCount64()) * time.Millisecond 601} 602 603func Ftruncate(fd Handle, length int64) (err error) { 604 curoffset, e := Seek(fd, 0, 1) 605 if e != nil { 606 return e 607 } 608 defer Seek(fd, curoffset, 0) 609 _, e = Seek(fd, length, 0) 610 if e != nil { 611 return e 612 } 613 e = SetEndOfFile(fd) 614 if e != nil { 615 return e 616 } 617 return nil 618} 619 620func Gettimeofday(tv *Timeval) (err error) { 621 var ft Filetime 622 GetSystemTimeAsFileTime(&ft) 623 *tv = NsecToTimeval(ft.Nanoseconds()) 624 return nil 625} 626 627func Pipe(p []Handle) (err error) { 628 if len(p) != 2 { 629 return syscall.EINVAL 630 } 631 var r, w Handle 632 e := CreatePipe(&r, &w, makeInheritSa(), 0) 633 if e != nil { 634 return e 635 } 636 p[0] = r 637 p[1] = w 638 return nil 639} 640 641func Utimes(path string, tv []Timeval) (err error) { 642 if len(tv) != 2 { 643 return syscall.EINVAL 644 } 645 pathp, e := UTF16PtrFromString(path) 646 if e != nil { 647 return e 648 } 649 h, e := CreateFile(pathp, 650 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, 651 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) 652 if e != nil { 653 return e 654 } 655 defer Close(h) 656 a := NsecToFiletime(tv[0].Nanoseconds()) 657 w := NsecToFiletime(tv[1].Nanoseconds()) 658 return SetFileTime(h, nil, &a, &w) 659} 660 661func UtimesNano(path string, ts []Timespec) (err error) { 662 if len(ts) != 2 { 663 return syscall.EINVAL 664 } 665 pathp, e := UTF16PtrFromString(path) 666 if e != nil { 667 return e 668 } 669 h, e := CreateFile(pathp, 670 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, 671 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) 672 if e != nil { 673 return e 674 } 675 defer Close(h) 676 a := NsecToFiletime(TimespecToNsec(ts[0])) 677 w := NsecToFiletime(TimespecToNsec(ts[1])) 678 return SetFileTime(h, nil, &a, &w) 679} 680 681func Fsync(fd Handle) (err error) { 682 return FlushFileBuffers(fd) 683} 684 685func Chmod(path string, mode uint32) (err error) { 686 p, e := UTF16PtrFromString(path) 687 if e != nil { 688 return e 689 } 690 attrs, e := GetFileAttributes(p) 691 if e != nil { 692 return e 693 } 694 if mode&S_IWRITE != 0 { 695 attrs &^= FILE_ATTRIBUTE_READONLY 696 } else { 697 attrs |= FILE_ATTRIBUTE_READONLY 698 } 699 return SetFileAttributes(p, attrs) 700} 701 702func LoadGetSystemTimePreciseAsFileTime() error { 703 return procGetSystemTimePreciseAsFileTime.Find() 704} 705 706func LoadCancelIoEx() error { 707 return procCancelIoEx.Find() 708} 709 710func LoadSetFileCompletionNotificationModes() error { 711 return procSetFileCompletionNotificationModes.Find() 712} 713 714func WaitForMultipleObjects(handles []Handle, waitAll bool, waitMilliseconds uint32) (event uint32, err error) { 715 // Every other win32 array API takes arguments as "pointer, count", except for this function. So we 716 // can't declare it as a usual [] type, because mksyscall will use the opposite order. We therefore 717 // trivially stub this ourselves. 718 719 var handlePtr *Handle 720 if len(handles) > 0 { 721 handlePtr = &handles[0] 722 } 723 return waitForMultipleObjects(uint32(len(handles)), uintptr(unsafe.Pointer(handlePtr)), waitAll, waitMilliseconds) 724} 725 726// net api calls 727 728const socket_error = uintptr(^uint32(0)) 729 730//sys WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup 731//sys WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup 732//sys WSAIoctl(s Handle, iocc uint32, inbuf *byte, cbif uint32, outbuf *byte, cbob uint32, cbbr *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) [failretval==socket_error] = ws2_32.WSAIoctl 733//sys socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket 734//sys sendto(s Handle, buf []byte, flags int32, to unsafe.Pointer, tolen int32) (err error) [failretval==socket_error] = ws2_32.sendto 735//sys recvfrom(s Handle, buf []byte, flags int32, from *RawSockaddrAny, fromlen *int32) (n int32, err error) [failretval==-1] = ws2_32.recvfrom 736//sys Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt 737//sys Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt 738//sys bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind 739//sys connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect 740//sys getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname 741//sys getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername 742//sys listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen 743//sys shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown 744//sys Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket 745//sys AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx 746//sys GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs 747//sys WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv 748//sys WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend 749//sys WSARecvFrom(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, from *RawSockaddrAny, fromlen *int32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecvFrom 750//sys WSASendTo(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to *RawSockaddrAny, tolen int32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASendTo 751//sys GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname 752//sys GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname 753//sys Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs 754//sys GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname 755//sys DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W 756//sys DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree 757//sys DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W 758//sys GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW 759//sys FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW 760//sys GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry 761//sys GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo 762//sys SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes 763//sys WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW 764//sys GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses 765//sys GetACP() (acp uint32) = kernel32.GetACP 766//sys MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar 767 768// For testing: clients can set this flag to force 769// creation of IPv6 sockets to return EAFNOSUPPORT. 770var SocketDisableIPv6 bool 771 772type RawSockaddrInet4 struct { 773 Family uint16 774 Port uint16 775 Addr [4]byte /* in_addr */ 776 Zero [8]uint8 777} 778 779type RawSockaddrInet6 struct { 780 Family uint16 781 Port uint16 782 Flowinfo uint32 783 Addr [16]byte /* in6_addr */ 784 Scope_id uint32 785} 786 787type RawSockaddr struct { 788 Family uint16 789 Data [14]int8 790} 791 792type RawSockaddrAny struct { 793 Addr RawSockaddr 794 Pad [100]int8 795} 796 797type Sockaddr interface { 798 sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs 799} 800 801type SockaddrInet4 struct { 802 Port int 803 Addr [4]byte 804 raw RawSockaddrInet4 805} 806 807func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) { 808 if sa.Port < 0 || sa.Port > 0xFFFF { 809 return nil, 0, syscall.EINVAL 810 } 811 sa.raw.Family = AF_INET 812 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 813 p[0] = byte(sa.Port >> 8) 814 p[1] = byte(sa.Port) 815 for i := 0; i < len(sa.Addr); i++ { 816 sa.raw.Addr[i] = sa.Addr[i] 817 } 818 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil 819} 820 821type SockaddrInet6 struct { 822 Port int 823 ZoneId uint32 824 Addr [16]byte 825 raw RawSockaddrInet6 826} 827 828func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) { 829 if sa.Port < 0 || sa.Port > 0xFFFF { 830 return nil, 0, syscall.EINVAL 831 } 832 sa.raw.Family = AF_INET6 833 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 834 p[0] = byte(sa.Port >> 8) 835 p[1] = byte(sa.Port) 836 sa.raw.Scope_id = sa.ZoneId 837 for i := 0; i < len(sa.Addr); i++ { 838 sa.raw.Addr[i] = sa.Addr[i] 839 } 840 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil 841} 842 843type RawSockaddrUnix struct { 844 Family uint16 845 Path [UNIX_PATH_MAX]int8 846} 847 848type SockaddrUnix struct { 849 Name string 850 raw RawSockaddrUnix 851} 852 853func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) { 854 name := sa.Name 855 n := len(name) 856 if n > len(sa.raw.Path) { 857 return nil, 0, syscall.EINVAL 858 } 859 if n == len(sa.raw.Path) && name[0] != '@' { 860 return nil, 0, syscall.EINVAL 861 } 862 sa.raw.Family = AF_UNIX 863 for i := 0; i < n; i++ { 864 sa.raw.Path[i] = int8(name[i]) 865 } 866 // length is family (uint16), name, NUL. 867 sl := int32(2) 868 if n > 0 { 869 sl += int32(n) + 1 870 } 871 if sa.raw.Path[0] == '@' { 872 sa.raw.Path[0] = 0 873 // Don't count trailing NUL for abstract address. 874 sl-- 875 } 876 877 return unsafe.Pointer(&sa.raw), sl, nil 878} 879 880func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) { 881 switch rsa.Addr.Family { 882 case AF_UNIX: 883 pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) 884 sa := new(SockaddrUnix) 885 if pp.Path[0] == 0 { 886 // "Abstract" Unix domain socket. 887 // Rewrite leading NUL as @ for textual display. 888 // (This is the standard convention.) 889 // Not friendly to overwrite in place, 890 // but the callers below don't care. 891 pp.Path[0] = '@' 892 } 893 894 // Assume path ends at NUL. 895 // This is not technically the Linux semantics for 896 // abstract Unix domain sockets--they are supposed 897 // to be uninterpreted fixed-size binary blobs--but 898 // everyone uses this convention. 899 n := 0 900 for n < len(pp.Path) && pp.Path[n] != 0 { 901 n++ 902 } 903 bytes := (*[len(pp.Path)]byte)(unsafe.Pointer(&pp.Path[0]))[0:n] 904 sa.Name = string(bytes) 905 return sa, nil 906 907 case AF_INET: 908 pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) 909 sa := new(SockaddrInet4) 910 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 911 sa.Port = int(p[0])<<8 + int(p[1]) 912 for i := 0; i < len(sa.Addr); i++ { 913 sa.Addr[i] = pp.Addr[i] 914 } 915 return sa, nil 916 917 case AF_INET6: 918 pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) 919 sa := new(SockaddrInet6) 920 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 921 sa.Port = int(p[0])<<8 + int(p[1]) 922 sa.ZoneId = pp.Scope_id 923 for i := 0; i < len(sa.Addr); i++ { 924 sa.Addr[i] = pp.Addr[i] 925 } 926 return sa, nil 927 } 928 return nil, syscall.EAFNOSUPPORT 929} 930 931func Socket(domain, typ, proto int) (fd Handle, err error) { 932 if domain == AF_INET6 && SocketDisableIPv6 { 933 return InvalidHandle, syscall.EAFNOSUPPORT 934 } 935 return socket(int32(domain), int32(typ), int32(proto)) 936} 937 938func SetsockoptInt(fd Handle, level, opt int, value int) (err error) { 939 v := int32(value) 940 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v))) 941} 942 943func Bind(fd Handle, sa Sockaddr) (err error) { 944 ptr, n, err := sa.sockaddr() 945 if err != nil { 946 return err 947 } 948 return bind(fd, ptr, n) 949} 950 951func Connect(fd Handle, sa Sockaddr) (err error) { 952 ptr, n, err := sa.sockaddr() 953 if err != nil { 954 return err 955 } 956 return connect(fd, ptr, n) 957} 958 959func Getsockname(fd Handle) (sa Sockaddr, err error) { 960 var rsa RawSockaddrAny 961 l := int32(unsafe.Sizeof(rsa)) 962 if err = getsockname(fd, &rsa, &l); err != nil { 963 return 964 } 965 return rsa.Sockaddr() 966} 967 968func Getpeername(fd Handle) (sa Sockaddr, err error) { 969 var rsa RawSockaddrAny 970 l := int32(unsafe.Sizeof(rsa)) 971 if err = getpeername(fd, &rsa, &l); err != nil { 972 return 973 } 974 return rsa.Sockaddr() 975} 976 977func Listen(s Handle, n int) (err error) { 978 return listen(s, int32(n)) 979} 980 981func Shutdown(fd Handle, how int) (err error) { 982 return shutdown(fd, int32(how)) 983} 984 985func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) { 986 rsa, l, err := to.sockaddr() 987 if err != nil { 988 return err 989 } 990 return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine) 991} 992 993func LoadGetAddrInfo() error { 994 return procGetAddrInfoW.Find() 995} 996 997var connectExFunc struct { 998 once sync.Once 999 addr uintptr 1000 err error 1001} 1002 1003func LoadConnectEx() error { 1004 connectExFunc.once.Do(func() { 1005 var s Handle 1006 s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) 1007 if connectExFunc.err != nil { 1008 return 1009 } 1010 defer CloseHandle(s) 1011 var n uint32 1012 connectExFunc.err = WSAIoctl(s, 1013 SIO_GET_EXTENSION_FUNCTION_POINTER, 1014 (*byte)(unsafe.Pointer(&WSAID_CONNECTEX)), 1015 uint32(unsafe.Sizeof(WSAID_CONNECTEX)), 1016 (*byte)(unsafe.Pointer(&connectExFunc.addr)), 1017 uint32(unsafe.Sizeof(connectExFunc.addr)), 1018 &n, nil, 0) 1019 }) 1020 return connectExFunc.err 1021} 1022 1023func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) { 1024 r1, _, e1 := syscall.Syscall9(connectExFunc.addr, 7, uintptr(s), uintptr(name), uintptr(namelen), uintptr(unsafe.Pointer(sendBuf)), uintptr(sendDataLen), uintptr(unsafe.Pointer(bytesSent)), uintptr(unsafe.Pointer(overlapped)), 0, 0) 1025 if r1 == 0 { 1026 if e1 != 0 { 1027 err = error(e1) 1028 } else { 1029 err = syscall.EINVAL 1030 } 1031 } 1032 return 1033} 1034 1035func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error { 1036 err := LoadConnectEx() 1037 if err != nil { 1038 return errorspkg.New("failed to find ConnectEx: " + err.Error()) 1039 } 1040 ptr, n, err := sa.sockaddr() 1041 if err != nil { 1042 return err 1043 } 1044 return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped) 1045} 1046 1047var sendRecvMsgFunc struct { 1048 once sync.Once 1049 sendAddr uintptr 1050 recvAddr uintptr 1051 err error 1052} 1053 1054func loadWSASendRecvMsg() error { 1055 sendRecvMsgFunc.once.Do(func() { 1056 var s Handle 1057 s, sendRecvMsgFunc.err = Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) 1058 if sendRecvMsgFunc.err != nil { 1059 return 1060 } 1061 defer CloseHandle(s) 1062 var n uint32 1063 sendRecvMsgFunc.err = WSAIoctl(s, 1064 SIO_GET_EXTENSION_FUNCTION_POINTER, 1065 (*byte)(unsafe.Pointer(&WSAID_WSARECVMSG)), 1066 uint32(unsafe.Sizeof(WSAID_WSARECVMSG)), 1067 (*byte)(unsafe.Pointer(&sendRecvMsgFunc.recvAddr)), 1068 uint32(unsafe.Sizeof(sendRecvMsgFunc.recvAddr)), 1069 &n, nil, 0) 1070 if sendRecvMsgFunc.err != nil { 1071 return 1072 } 1073 sendRecvMsgFunc.err = WSAIoctl(s, 1074 SIO_GET_EXTENSION_FUNCTION_POINTER, 1075 (*byte)(unsafe.Pointer(&WSAID_WSASENDMSG)), 1076 uint32(unsafe.Sizeof(WSAID_WSASENDMSG)), 1077 (*byte)(unsafe.Pointer(&sendRecvMsgFunc.sendAddr)), 1078 uint32(unsafe.Sizeof(sendRecvMsgFunc.sendAddr)), 1079 &n, nil, 0) 1080 }) 1081 return sendRecvMsgFunc.err 1082} 1083 1084func WSASendMsg(fd Handle, msg *WSAMsg, flags uint32, bytesSent *uint32, overlapped *Overlapped, croutine *byte) error { 1085 err := loadWSASendRecvMsg() 1086 if err != nil { 1087 return err 1088 } 1089 r1, _, e1 := syscall.Syscall6(sendRecvMsgFunc.sendAddr, 6, uintptr(fd), uintptr(unsafe.Pointer(msg)), uintptr(flags), uintptr(unsafe.Pointer(bytesSent)), uintptr(unsafe.Pointer(overlapped)), uintptr(unsafe.Pointer(croutine))) 1090 if r1 == socket_error { 1091 if e1 != 0 { 1092 err = errnoErr(e1) 1093 } else { 1094 err = syscall.EINVAL 1095 } 1096 } 1097 return err 1098} 1099 1100func WSARecvMsg(fd Handle, msg *WSAMsg, bytesReceived *uint32, overlapped *Overlapped, croutine *byte) error { 1101 err := loadWSASendRecvMsg() 1102 if err != nil { 1103 return err 1104 } 1105 r1, _, e1 := syscall.Syscall6(sendRecvMsgFunc.recvAddr, 5, uintptr(fd), uintptr(unsafe.Pointer(msg)), uintptr(unsafe.Pointer(bytesReceived)), uintptr(unsafe.Pointer(overlapped)), uintptr(unsafe.Pointer(croutine)), 0) 1106 if r1 == socket_error { 1107 if e1 != 0 { 1108 err = errnoErr(e1) 1109 } else { 1110 err = syscall.EINVAL 1111 } 1112 } 1113 return err 1114} 1115 1116// Invented structures to support what package os expects. 1117type Rusage struct { 1118 CreationTime Filetime 1119 ExitTime Filetime 1120 KernelTime Filetime 1121 UserTime Filetime 1122} 1123 1124type WaitStatus struct { 1125 ExitCode uint32 1126} 1127 1128func (w WaitStatus) Exited() bool { return true } 1129 1130func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) } 1131 1132func (w WaitStatus) Signal() Signal { return -1 } 1133 1134func (w WaitStatus) CoreDump() bool { return false } 1135 1136func (w WaitStatus) Stopped() bool { return false } 1137 1138func (w WaitStatus) Continued() bool { return false } 1139 1140func (w WaitStatus) StopSignal() Signal { return -1 } 1141 1142func (w WaitStatus) Signaled() bool { return false } 1143 1144func (w WaitStatus) TrapCause() int { return -1 } 1145 1146// Timespec is an invented structure on Windows, but here for 1147// consistency with the corresponding package for other operating systems. 1148type Timespec struct { 1149 Sec int64 1150 Nsec int64 1151} 1152 1153func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } 1154 1155func NsecToTimespec(nsec int64) (ts Timespec) { 1156 ts.Sec = nsec / 1e9 1157 ts.Nsec = nsec % 1e9 1158 return 1159} 1160 1161// TODO(brainman): fix all needed for net 1162 1163func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS } 1164 1165func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) { 1166 var rsa RawSockaddrAny 1167 l := int32(unsafe.Sizeof(rsa)) 1168 n32, err := recvfrom(fd, p, int32(flags), &rsa, &l) 1169 n = int(n32) 1170 if err != nil { 1171 return 1172 } 1173 from, err = rsa.Sockaddr() 1174 return 1175} 1176 1177func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) { 1178 ptr, l, err := to.sockaddr() 1179 if err != nil { 1180 return err 1181 } 1182 return sendto(fd, p, int32(flags), ptr, l) 1183} 1184 1185func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS } 1186 1187// The Linger struct is wrong but we only noticed after Go 1. 1188// sysLinger is the real system call structure. 1189 1190// BUG(brainman): The definition of Linger is not appropriate for direct use 1191// with Setsockopt and Getsockopt. 1192// Use SetsockoptLinger instead. 1193 1194type Linger struct { 1195 Onoff int32 1196 Linger int32 1197} 1198 1199type sysLinger struct { 1200 Onoff uint16 1201 Linger uint16 1202} 1203 1204type IPMreq struct { 1205 Multiaddr [4]byte /* in_addr */ 1206 Interface [4]byte /* in_addr */ 1207} 1208 1209type IPv6Mreq struct { 1210 Multiaddr [16]byte /* in6_addr */ 1211 Interface uint32 1212} 1213 1214func GetsockoptInt(fd Handle, level, opt int) (int, error) { 1215 v := int32(0) 1216 l := int32(unsafe.Sizeof(v)) 1217 err := Getsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), &l) 1218 return int(v), err 1219} 1220 1221func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) { 1222 sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)} 1223 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys))) 1224} 1225 1226func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) { 1227 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4) 1228} 1229func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) { 1230 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq))) 1231} 1232func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) { 1233 return syscall.EWINDOWS 1234} 1235 1236func Getpid() (pid int) { return int(GetCurrentProcessId()) } 1237 1238func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) { 1239 // NOTE(rsc): The Win32finddata struct is wrong for the system call: 1240 // the two paths are each one uint16 short. Use the correct struct, 1241 // a win32finddata1, and then copy the results out. 1242 // There is no loss of expressivity here, because the final 1243 // uint16, if it is used, is supposed to be a NUL, and Go doesn't need that. 1244 // For Go 1.1, we might avoid the allocation of win32finddata1 here 1245 // by adding a final Bug [2]uint16 field to the struct and then 1246 // adjusting the fields in the result directly. 1247 var data1 win32finddata1 1248 handle, err = findFirstFile1(name, &data1) 1249 if err == nil { 1250 copyFindData(data, &data1) 1251 } 1252 return 1253} 1254 1255func FindNextFile(handle Handle, data *Win32finddata) (err error) { 1256 var data1 win32finddata1 1257 err = findNextFile1(handle, &data1) 1258 if err == nil { 1259 copyFindData(data, &data1) 1260 } 1261 return 1262} 1263 1264func getProcessEntry(pid int) (*ProcessEntry32, error) { 1265 snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) 1266 if err != nil { 1267 return nil, err 1268 } 1269 defer CloseHandle(snapshot) 1270 var procEntry ProcessEntry32 1271 procEntry.Size = uint32(unsafe.Sizeof(procEntry)) 1272 if err = Process32First(snapshot, &procEntry); err != nil { 1273 return nil, err 1274 } 1275 for { 1276 if procEntry.ProcessID == uint32(pid) { 1277 return &procEntry, nil 1278 } 1279 err = Process32Next(snapshot, &procEntry) 1280 if err != nil { 1281 return nil, err 1282 } 1283 } 1284} 1285 1286func Getppid() (ppid int) { 1287 pe, err := getProcessEntry(Getpid()) 1288 if err != nil { 1289 return -1 1290 } 1291 return int(pe.ParentProcessID) 1292} 1293 1294// TODO(brainman): fix all needed for os 1295func Fchdir(fd Handle) (err error) { return syscall.EWINDOWS } 1296func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS } 1297func Symlink(path, link string) (err error) { return syscall.EWINDOWS } 1298 1299func Fchmod(fd Handle, mode uint32) (err error) { return syscall.EWINDOWS } 1300func Chown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } 1301func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } 1302func Fchown(fd Handle, uid int, gid int) (err error) { return syscall.EWINDOWS } 1303 1304func Getuid() (uid int) { return -1 } 1305func Geteuid() (euid int) { return -1 } 1306func Getgid() (gid int) { return -1 } 1307func Getegid() (egid int) { return -1 } 1308func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS } 1309 1310type Signal int 1311 1312func (s Signal) Signal() {} 1313 1314func (s Signal) String() string { 1315 if 0 <= s && int(s) < len(signals) { 1316 str := signals[s] 1317 if str != "" { 1318 return str 1319 } 1320 } 1321 return "signal " + itoa(int(s)) 1322} 1323 1324func LoadCreateSymbolicLink() error { 1325 return procCreateSymbolicLinkW.Find() 1326} 1327 1328// Readlink returns the destination of the named symbolic link. 1329func Readlink(path string, buf []byte) (n int, err error) { 1330 fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING, 1331 FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0) 1332 if err != nil { 1333 return -1, err 1334 } 1335 defer CloseHandle(fd) 1336 1337 rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE) 1338 var bytesReturned uint32 1339 err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil) 1340 if err != nil { 1341 return -1, err 1342 } 1343 1344 rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0])) 1345 var s string 1346 switch rdb.ReparseTag { 1347 case IO_REPARSE_TAG_SYMLINK: 1348 data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) 1349 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) 1350 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) 1351 case IO_REPARSE_TAG_MOUNT_POINT: 1352 data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) 1353 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) 1354 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) 1355 default: 1356 // the path is not a symlink or junction but another type of reparse 1357 // point 1358 return -1, syscall.ENOENT 1359 } 1360 n = copy(buf, []byte(s)) 1361 1362 return n, nil 1363} 1364 1365// GUIDFromString parses a string in the form of 1366// "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}" into a GUID. 1367func GUIDFromString(str string) (GUID, error) { 1368 guid := GUID{} 1369 str16, err := syscall.UTF16PtrFromString(str) 1370 if err != nil { 1371 return guid, err 1372 } 1373 err = clsidFromString(str16, &guid) 1374 if err != nil { 1375 return guid, err 1376 } 1377 return guid, nil 1378} 1379 1380// GenerateGUID creates a new random GUID. 1381func GenerateGUID() (GUID, error) { 1382 guid := GUID{} 1383 err := coCreateGuid(&guid) 1384 if err != nil { 1385 return guid, err 1386 } 1387 return guid, nil 1388} 1389 1390// String returns the canonical string form of the GUID, 1391// in the form of "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}". 1392func (guid GUID) String() string { 1393 var str [100]uint16 1394 chars := stringFromGUID2(&guid, &str[0], int32(len(str))) 1395 if chars <= 1 { 1396 return "" 1397 } 1398 return string(utf16.Decode(str[:chars-1])) 1399} 1400 1401// KnownFolderPath returns a well-known folder path for the current user, specified by one of 1402// the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag. 1403func KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) { 1404 return Token(0).KnownFolderPath(folderID, flags) 1405} 1406 1407// KnownFolderPath returns a well-known folder path for the user token, specified by one of 1408// the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag. 1409func (t Token) KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) { 1410 var p *uint16 1411 err := shGetKnownFolderPath(folderID, flags, t, &p) 1412 if err != nil { 1413 return "", err 1414 } 1415 defer CoTaskMemFree(unsafe.Pointer(p)) 1416 return UTF16PtrToString(p), nil 1417} 1418 1419// RtlGetVersion returns the version of the underlying operating system, ignoring 1420// manifest semantics but is affected by the application compatibility layer. 1421func RtlGetVersion() *OsVersionInfoEx { 1422 info := &OsVersionInfoEx{} 1423 info.osVersionInfoSize = uint32(unsafe.Sizeof(*info)) 1424 // According to documentation, this function always succeeds. 1425 // The function doesn't even check the validity of the 1426 // osVersionInfoSize member. Disassembling ntdll.dll indicates 1427 // that the documentation is indeed correct about that. 1428 _ = rtlGetVersion(info) 1429 return info 1430} 1431 1432// RtlGetNtVersionNumbers returns the version of the underlying operating system, 1433// ignoring manifest semantics and the application compatibility layer. 1434func RtlGetNtVersionNumbers() (majorVersion, minorVersion, buildNumber uint32) { 1435 rtlGetNtVersionNumbers(&majorVersion, &minorVersion, &buildNumber) 1436 buildNumber &= 0xffff 1437 return 1438} 1439 1440// GetProcessPreferredUILanguages retrieves the process preferred UI languages. 1441func GetProcessPreferredUILanguages(flags uint32) ([]string, error) { 1442 return getUILanguages(flags, getProcessPreferredUILanguages) 1443} 1444 1445// GetThreadPreferredUILanguages retrieves the thread preferred UI languages for the current thread. 1446func GetThreadPreferredUILanguages(flags uint32) ([]string, error) { 1447 return getUILanguages(flags, getThreadPreferredUILanguages) 1448} 1449 1450// GetUserPreferredUILanguages retrieves information about the user preferred UI languages. 1451func GetUserPreferredUILanguages(flags uint32) ([]string, error) { 1452 return getUILanguages(flags, getUserPreferredUILanguages) 1453} 1454 1455// GetSystemPreferredUILanguages retrieves the system preferred UI languages. 1456func GetSystemPreferredUILanguages(flags uint32) ([]string, error) { 1457 return getUILanguages(flags, getSystemPreferredUILanguages) 1458} 1459 1460func getUILanguages(flags uint32, f func(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) error) ([]string, error) { 1461 size := uint32(128) 1462 for { 1463 var numLanguages uint32 1464 buf := make([]uint16, size) 1465 err := f(flags, &numLanguages, &buf[0], &size) 1466 if err == ERROR_INSUFFICIENT_BUFFER { 1467 continue 1468 } 1469 if err != nil { 1470 return nil, err 1471 } 1472 buf = buf[:size] 1473 if numLanguages == 0 || len(buf) == 0 { // GetProcessPreferredUILanguages may return numLanguages==0 with "\0\0" 1474 return []string{}, nil 1475 } 1476 if buf[len(buf)-1] == 0 { 1477 buf = buf[:len(buf)-1] // remove terminating null 1478 } 1479 languages := make([]string, 0, numLanguages) 1480 from := 0 1481 for i, c := range buf { 1482 if c == 0 { 1483 languages = append(languages, string(utf16.Decode(buf[from:i]))) 1484 from = i + 1 1485 } 1486 } 1487 return languages, nil 1488 } 1489} 1490