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 18type Handle uintptr 19 20const ( 21 InvalidHandle = ^Handle(0) 22 23 // Flags for DefineDosDevice. 24 DDD_EXACT_MATCH_ON_REMOVE = 0x00000004 25 DDD_NO_BROADCAST_SYSTEM = 0x00000008 26 DDD_RAW_TARGET_PATH = 0x00000001 27 DDD_REMOVE_DEFINITION = 0x00000002 28 29 // Return values for GetDriveType. 30 DRIVE_UNKNOWN = 0 31 DRIVE_NO_ROOT_DIR = 1 32 DRIVE_REMOVABLE = 2 33 DRIVE_FIXED = 3 34 DRIVE_REMOTE = 4 35 DRIVE_CDROM = 5 36 DRIVE_RAMDISK = 6 37 38 // File system flags from GetVolumeInformation and GetVolumeInformationByHandle. 39 FILE_CASE_SENSITIVE_SEARCH = 0x00000001 40 FILE_CASE_PRESERVED_NAMES = 0x00000002 41 FILE_FILE_COMPRESSION = 0x00000010 42 FILE_DAX_VOLUME = 0x20000000 43 FILE_NAMED_STREAMS = 0x00040000 44 FILE_PERSISTENT_ACLS = 0x00000008 45 FILE_READ_ONLY_VOLUME = 0x00080000 46 FILE_SEQUENTIAL_WRITE_ONCE = 0x00100000 47 FILE_SUPPORTS_ENCRYPTION = 0x00020000 48 FILE_SUPPORTS_EXTENDED_ATTRIBUTES = 0x00800000 49 FILE_SUPPORTS_HARD_LINKS = 0x00400000 50 FILE_SUPPORTS_OBJECT_IDS = 0x00010000 51 FILE_SUPPORTS_OPEN_BY_FILE_ID = 0x01000000 52 FILE_SUPPORTS_REPARSE_POINTS = 0x00000080 53 FILE_SUPPORTS_SPARSE_FILES = 0x00000040 54 FILE_SUPPORTS_TRANSACTIONS = 0x00200000 55 FILE_SUPPORTS_USN_JOURNAL = 0x02000000 56 FILE_UNICODE_ON_DISK = 0x00000004 57 FILE_VOLUME_IS_COMPRESSED = 0x00008000 58 FILE_VOLUME_QUOTAS = 0x00000020 59 60 // Return values of SleepEx and other APC functions 61 STATUS_USER_APC = 0x000000C0 62 WAIT_IO_COMPLETION = STATUS_USER_APC 63) 64 65// StringToUTF16 is deprecated. Use UTF16FromString instead. 66// If s contains a NUL byte this function panics instead of 67// returning an error. 68func StringToUTF16(s string) []uint16 { 69 a, err := UTF16FromString(s) 70 if err != nil { 71 panic("windows: string with NUL passed to StringToUTF16") 72 } 73 return a 74} 75 76// UTF16FromString returns the UTF-16 encoding of the UTF-8 string 77// s, with a terminating NUL added. If s contains a NUL byte at any 78// location, it returns (nil, syscall.EINVAL). 79func UTF16FromString(s string) ([]uint16, error) { 80 for i := 0; i < len(s); i++ { 81 if s[i] == 0 { 82 return nil, syscall.EINVAL 83 } 84 } 85 return utf16.Encode([]rune(s + "\x00")), nil 86} 87 88// UTF16ToString returns the UTF-8 encoding of the UTF-16 sequence s, 89// with a terminating NUL removed. 90func UTF16ToString(s []uint16) string { 91 for i, v := range s { 92 if v == 0 { 93 s = s[0:i] 94 break 95 } 96 } 97 return string(utf16.Decode(s)) 98} 99 100// StringToUTF16Ptr is deprecated. Use UTF16PtrFromString instead. 101// If s contains a NUL byte this function panics instead of 102// returning an error. 103func StringToUTF16Ptr(s string) *uint16 { return &StringToUTF16(s)[0] } 104 105// UTF16PtrFromString returns pointer to the UTF-16 encoding of 106// the UTF-8 string s, with a terminating NUL added. If s 107// contains a NUL byte at any location, it returns (nil, syscall.EINVAL). 108func UTF16PtrFromString(s string) (*uint16, error) { 109 a, err := UTF16FromString(s) 110 if err != nil { 111 return nil, err 112 } 113 return &a[0], nil 114} 115 116func Getpagesize() int { return 4096 } 117 118// NewCallback converts a Go function to a function pointer conforming to the stdcall calling convention. 119// This is useful when interoperating with Windows code requiring callbacks. 120// 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. 121func NewCallback(fn interface{}) uintptr { 122 return syscall.NewCallback(fn) 123} 124 125// NewCallbackCDecl converts a Go function to a function pointer conforming to the cdecl calling convention. 126// This is useful when interoperating with Windows code requiring callbacks. 127// 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. 128func NewCallbackCDecl(fn interface{}) uintptr { 129 return syscall.NewCallbackCDecl(fn) 130} 131 132// windows api calls 133 134//sys GetLastError() (lasterr error) 135//sys LoadLibrary(libname string) (handle Handle, err error) = LoadLibraryW 136//sys LoadLibraryEx(libname string, zero Handle, flags uintptr) (handle Handle, err error) = LoadLibraryExW 137//sys FreeLibrary(handle Handle) (err error) 138//sys GetProcAddress(module Handle, procname string) (proc uintptr, err error) 139//sys GetVersion() (ver uint32, err error) 140//sys FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW 141//sys ExitProcess(exitcode uint32) 142//sys IsWow64Process(handle Handle, isWow64 *bool) (err error) = IsWow64Process 143//sys CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile Handle) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW 144//sys ReadFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) 145//sys WriteFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) 146//sys GetOverlappedResult(handle Handle, overlapped *Overlapped, done *uint32, wait bool) (err error) 147//sys SetFilePointer(handle Handle, lowoffset int32, highoffsetptr *int32, whence uint32) (newlowoffset uint32, err error) [failretval==0xffffffff] 148//sys CloseHandle(handle Handle) (err error) 149//sys GetStdHandle(stdhandle uint32) (handle Handle, err error) [failretval==InvalidHandle] 150//sys SetStdHandle(stdhandle uint32, handle Handle) (err error) 151//sys findFirstFile1(name *uint16, data *win32finddata1) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstFileW 152//sys findNextFile1(handle Handle, data *win32finddata1) (err error) = FindNextFileW 153//sys FindClose(handle Handle) (err error) 154//sys GetFileInformationByHandle(handle Handle, data *ByHandleFileInformation) (err error) 155//sys GetFileInformationByHandleEx(handle Handle, class uint32, outBuffer *byte, outBufferLen uint32) (err error) 156//sys GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, err error) = GetCurrentDirectoryW 157//sys SetCurrentDirectory(path *uint16) (err error) = SetCurrentDirectoryW 158//sys CreateDirectory(path *uint16, sa *SecurityAttributes) (err error) = CreateDirectoryW 159//sys RemoveDirectory(path *uint16) (err error) = RemoveDirectoryW 160//sys DeleteFile(path *uint16) (err error) = DeleteFileW 161//sys MoveFile(from *uint16, to *uint16) (err error) = MoveFileW 162//sys MoveFileEx(from *uint16, to *uint16, flags uint32) (err error) = MoveFileExW 163//sys GetComputerName(buf *uint16, n *uint32) (err error) = GetComputerNameW 164//sys GetComputerNameEx(nametype uint32, buf *uint16, n *uint32) (err error) = GetComputerNameExW 165//sys SetEndOfFile(handle Handle) (err error) 166//sys GetSystemTimeAsFileTime(time *Filetime) 167//sys GetSystemTimePreciseAsFileTime(time *Filetime) 168//sys GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff] 169//sys CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uint32, threadcnt uint32) (handle Handle, err error) 170//sys GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uint32, overlapped **Overlapped, timeout uint32) (err error) 171//sys PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uint32, overlapped *Overlapped) (err error) 172//sys CancelIo(s Handle) (err error) 173//sys CancelIoEx(s Handle, o *Overlapped) (err error) 174//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 175//sys OpenProcess(desiredAccess uint32, inheritHandle bool, processId uint32) (handle Handle, err error) 176//sys ShellExecute(hwnd Handle, verb *uint16, file *uint16, args *uint16, cwd *uint16, showCmd int32) (err error) = shell32.ShellExecuteW 177//sys shGetKnownFolderPath(id *KNOWNFOLDERID, flags uint32, token Token, path **uint16) (ret error) = shell32.SHGetKnownFolderPath 178//sys TerminateProcess(handle Handle, exitcode uint32) (err error) 179//sys GetExitCodeProcess(handle Handle, exitcode *uint32) (err error) 180//sys GetStartupInfo(startupInfo *StartupInfo) (err error) = GetStartupInfoW 181//sys GetCurrentProcess() (pseudoHandle Handle, err error) 182//sys GetCurrentThread() (pseudoHandle Handle, err error) 183//sys GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error) 184//sys DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error) 185//sys WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] 186//sys waitForMultipleObjects(count uint32, handles uintptr, waitAll bool, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] = WaitForMultipleObjects 187//sys GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW 188//sys CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error) 189//sys GetFileType(filehandle Handle) (n uint32, err error) 190//sys CryptAcquireContext(provhandle *Handle, container *uint16, provider *uint16, provtype uint32, flags uint32) (err error) = advapi32.CryptAcquireContextW 191//sys CryptReleaseContext(provhandle Handle, flags uint32) (err error) = advapi32.CryptReleaseContext 192//sys CryptGenRandom(provhandle Handle, buflen uint32, buf *byte) (err error) = advapi32.CryptGenRandom 193//sys GetEnvironmentStrings() (envs *uint16, err error) [failretval==nil] = kernel32.GetEnvironmentStringsW 194//sys FreeEnvironmentStrings(envs *uint16) (err error) = kernel32.FreeEnvironmentStringsW 195//sys GetEnvironmentVariable(name *uint16, buffer *uint16, size uint32) (n uint32, err error) = kernel32.GetEnvironmentVariableW 196//sys SetEnvironmentVariable(name *uint16, value *uint16) (err error) = kernel32.SetEnvironmentVariableW 197//sys CreateEnvironmentBlock(block **uint16, token Token, inheritExisting bool) (err error) = userenv.CreateEnvironmentBlock 198//sys DestroyEnvironmentBlock(block *uint16) (err error) = userenv.DestroyEnvironmentBlock 199//sys getTickCount64() (ms uint64) = kernel32.GetTickCount64 200//sys SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error) 201//sys GetFileAttributes(name *uint16) (attrs uint32, err error) [failretval==INVALID_FILE_ATTRIBUTES] = kernel32.GetFileAttributesW 202//sys SetFileAttributes(name *uint16, attrs uint32) (err error) = kernel32.SetFileAttributesW 203//sys GetFileAttributesEx(name *uint16, level uint32, info *byte) (err error) = kernel32.GetFileAttributesExW 204//sys GetCommandLine() (cmd *uint16) = kernel32.GetCommandLineW 205//sys CommandLineToArgv(cmd *uint16, argc *int32) (argv *[8192]*[8192]uint16, err error) [failretval==nil] = shell32.CommandLineToArgvW 206//sys LocalFree(hmem Handle) (handle Handle, err error) [failretval!=0] 207//sys SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error) 208//sys FlushFileBuffers(handle Handle) (err error) 209//sys GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, err error) = kernel32.GetFullPathNameW 210//sys GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err error) = kernel32.GetLongPathNameW 211//sys GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW 212//sys CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) = kernel32.CreateFileMappingW 213//sys MapViewOfFile(handle Handle, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, err error) 214//sys UnmapViewOfFile(addr uintptr) (err error) 215//sys FlushViewOfFile(addr uintptr, length uintptr) (err error) 216//sys VirtualLock(addr uintptr, length uintptr) (err error) 217//sys VirtualUnlock(addr uintptr, length uintptr) (err error) 218//sys VirtualAlloc(address uintptr, size uintptr, alloctype uint32, protect uint32) (value uintptr, err error) = kernel32.VirtualAlloc 219//sys VirtualFree(address uintptr, size uintptr, freetype uint32) (err error) = kernel32.VirtualFree 220//sys VirtualProtect(address uintptr, size uintptr, newprotect uint32, oldprotect *uint32) (err error) = kernel32.VirtualProtect 221//sys TransmitFile(s Handle, handle Handle, bytesToWrite uint32, bytsPerSend uint32, overlapped *Overlapped, transmitFileBuf *TransmitFileBuffers, flags uint32) (err error) = mswsock.TransmitFile 222//sys ReadDirectoryChanges(handle Handle, buf *byte, buflen uint32, watchSubTree bool, mask uint32, retlen *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) = kernel32.ReadDirectoryChangesW 223//sys CertOpenSystemStore(hprov Handle, name *uint16) (store Handle, err error) = crypt32.CertOpenSystemStoreW 224//sys CertOpenStore(storeProvider uintptr, msgAndCertEncodingType uint32, cryptProv uintptr, flags uint32, para uintptr) (handle Handle, err error) [failretval==InvalidHandle] = crypt32.CertOpenStore 225//sys CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) [failretval==nil] = crypt32.CertEnumCertificatesInStore 226//sys CertAddCertificateContextToStore(store Handle, certContext *CertContext, addDisposition uint32, storeContext **CertContext) (err error) = crypt32.CertAddCertificateContextToStore 227//sys CertCloseStore(store Handle, flags uint32) (err error) = crypt32.CertCloseStore 228//sys CertGetCertificateChain(engine Handle, leaf *CertContext, time *Filetime, additionalStore Handle, para *CertChainPara, flags uint32, reserved uintptr, chainCtx **CertChainContext) (err error) = crypt32.CertGetCertificateChain 229//sys CertFreeCertificateChain(ctx *CertChainContext) = crypt32.CertFreeCertificateChain 230//sys CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, encodedLen uint32) (context *CertContext, err error) [failretval==nil] = crypt32.CertCreateCertificateContext 231//sys CertFreeCertificateContext(ctx *CertContext) (err error) = crypt32.CertFreeCertificateContext 232//sys CertVerifyCertificateChainPolicy(policyOID uintptr, chain *CertChainContext, para *CertChainPolicyPara, status *CertChainPolicyStatus) (err error) = crypt32.CertVerifyCertificateChainPolicy 233//sys RegOpenKeyEx(key Handle, subkey *uint16, options uint32, desiredAccess uint32, result *Handle) (regerrno error) = advapi32.RegOpenKeyExW 234//sys RegCloseKey(key Handle) (regerrno error) = advapi32.RegCloseKey 235//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 236//sys RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW 237//sys RegQueryValueEx(key Handle, name *uint16, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegQueryValueExW 238//sys GetCurrentProcessId() (pid uint32) = kernel32.GetCurrentProcessId 239//sys GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode 240//sys SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode 241//sys GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo 242//sys WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW 243//sys ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW 244//sys CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot 245//sys Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32FirstW 246//sys Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32NextW 247//sys Thread32First(snapshot Handle, threadEntry *ThreadEntry32) (err error) 248//sys Thread32Next(snapshot Handle, threadEntry *ThreadEntry32) (err error) 249//sys DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBufferSize uint32, outBuffer *byte, outBufferSize uint32, bytesReturned *uint32, overlapped *Overlapped) (err error) 250// This function returns 1 byte BOOLEAN rather than the 4 byte BOOL. 251//sys CreateSymbolicLink(symlinkfilename *uint16, targetfilename *uint16, flags uint32) (err error) [failretval&0xff==0] = CreateSymbolicLinkW 252//sys CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr) (err error) [failretval&0xff==0] = CreateHardLinkW 253//sys GetCurrentThreadId() (id uint32) 254//sys CreateEvent(eventAttrs *SecurityAttributes, manualReset uint32, initialState uint32, name *uint16) (handle Handle, err error) = kernel32.CreateEventW 255//sys CreateEventEx(eventAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) = kernel32.CreateEventExW 256//sys OpenEvent(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenEventW 257//sys SetEvent(event Handle) (err error) = kernel32.SetEvent 258//sys ResetEvent(event Handle) (err error) = kernel32.ResetEvent 259//sys PulseEvent(event Handle) (err error) = kernel32.PulseEvent 260//sys SleepEx(milliseconds uint32, alertable bool) (ret uint32) = kernel32.SleepEx 261//sys CreateJobObject(jobAttr *SecurityAttributes, name *uint16) (handle Handle, err error) = kernel32.CreateJobObjectW 262//sys AssignProcessToJobObject(job Handle, process Handle) (err error) = kernel32.AssignProcessToJobObject 263//sys TerminateJobObject(job Handle, exitCode uint32) (err error) = kernel32.TerminateJobObject 264//sys SetErrorMode(mode uint32) (ret uint32) = kernel32.SetErrorMode 265//sys ResumeThread(thread Handle) (ret uint32, err error) [failretval==0xffffffff] = kernel32.ResumeThread 266//sys SetPriorityClass(process Handle, priorityClass uint32) (err error) = kernel32.SetPriorityClass 267//sys GetPriorityClass(process Handle) (ret uint32, err error) = kernel32.GetPriorityClass 268//sys SetInformationJobObject(job Handle, JobObjectInformationClass uint32, JobObjectInformation uintptr, JobObjectInformationLength uint32) (ret int, err error) 269//sys GenerateConsoleCtrlEvent(ctrlEvent uint32, processGroupID uint32) (err error) 270//sys GetProcessId(process Handle) (id uint32, err error) 271//sys OpenThread(desiredAccess uint32, inheritHandle bool, threadId uint32) (handle Handle, err error) 272//sys SetProcessPriorityBoost(process Handle, disable bool) (err error) = kernel32.SetProcessPriorityBoost 273 274// Volume Management Functions 275//sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW 276//sys DeleteVolumeMountPoint(volumeMountPoint *uint16) (err error) = DeleteVolumeMountPointW 277//sys FindFirstVolume(volumeName *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeW 278//sys FindFirstVolumeMountPoint(rootPathName *uint16, volumeMountPoint *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeMountPointW 279//sys FindNextVolume(findVolume Handle, volumeName *uint16, bufferLength uint32) (err error) = FindNextVolumeW 280//sys FindNextVolumeMountPoint(findVolumeMountPoint Handle, volumeMountPoint *uint16, bufferLength uint32) (err error) = FindNextVolumeMountPointW 281//sys FindVolumeClose(findVolume Handle) (err error) 282//sys FindVolumeMountPointClose(findVolumeMountPoint Handle) (err error) 283//sys GetDriveType(rootPathName *uint16) (driveType uint32) = GetDriveTypeW 284//sys GetLogicalDrives() (drivesBitMask uint32, err error) [failretval==0] 285//sys GetLogicalDriveStrings(bufferLength uint32, buffer *uint16) (n uint32, err error) [failretval==0] = GetLogicalDriveStringsW 286//sys GetVolumeInformation(rootPathName *uint16, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationW 287//sys GetVolumeInformationByHandle(file Handle, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationByHandleW 288//sys GetVolumeNameForVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16, bufferlength uint32) (err error) = GetVolumeNameForVolumeMountPointW 289//sys GetVolumePathName(fileName *uint16, volumePathName *uint16, bufferLength uint32) (err error) = GetVolumePathNameW 290//sys GetVolumePathNamesForVolumeName(volumeName *uint16, volumePathNames *uint16, bufferLength uint32, returnLength *uint32) (err error) = GetVolumePathNamesForVolumeNameW 291//sys QueryDosDevice(deviceName *uint16, targetPath *uint16, max uint32) (n uint32, err error) [failretval==0] = QueryDosDeviceW 292//sys SetVolumeLabel(rootPathName *uint16, volumeName *uint16) (err error) = SetVolumeLabelW 293//sys SetVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16) (err error) = SetVolumeMountPointW 294//sys MessageBox(hwnd Handle, text *uint16, caption *uint16, boxtype uint32) (ret int32, err error) [failretval==0] = user32.MessageBoxW 295//sys clsidFromString(lpsz *uint16, pclsid *GUID) (ret error) = ole32.CLSIDFromString 296//sys stringFromGUID2(rguid *GUID, lpsz *uint16, cchMax int32) (chars int32) = ole32.StringFromGUID2 297//sys coCreateGuid(pguid *GUID) (ret error) = ole32.CoCreateGuid 298//sys CoTaskMemFree(address unsafe.Pointer) = ole32.CoTaskMemFree 299//sys rtlGetVersion(info *OsVersionInfoEx) (ret error) = ntdll.RtlGetVersion 300//sys rtlGetNtVersionNumbers(majorVersion *uint32, minorVersion *uint32, buildNumber *uint32) = ntdll.RtlGetNtVersionNumbers 301 302// syscall interface implementation for other packages 303 304// GetProcAddressByOrdinal retrieves the address of the exported 305// function from module by ordinal. 306func GetProcAddressByOrdinal(module Handle, ordinal uintptr) (proc uintptr, err error) { 307 r0, _, e1 := syscall.Syscall(procGetProcAddress.Addr(), 2, uintptr(module), ordinal, 0) 308 proc = uintptr(r0) 309 if proc == 0 { 310 if e1 != 0 { 311 err = errnoErr(e1) 312 } else { 313 err = syscall.EINVAL 314 } 315 } 316 return 317} 318 319func Exit(code int) { ExitProcess(uint32(code)) } 320 321func makeInheritSa() *SecurityAttributes { 322 var sa SecurityAttributes 323 sa.Length = uint32(unsafe.Sizeof(sa)) 324 sa.InheritHandle = 1 325 return &sa 326} 327 328func Open(path string, mode int, perm uint32) (fd Handle, err error) { 329 if len(path) == 0 { 330 return InvalidHandle, ERROR_FILE_NOT_FOUND 331 } 332 pathp, err := UTF16PtrFromString(path) 333 if err != nil { 334 return InvalidHandle, err 335 } 336 var access uint32 337 switch mode & (O_RDONLY | O_WRONLY | O_RDWR) { 338 case O_RDONLY: 339 access = GENERIC_READ 340 case O_WRONLY: 341 access = GENERIC_WRITE 342 case O_RDWR: 343 access = GENERIC_READ | GENERIC_WRITE 344 } 345 if mode&O_CREAT != 0 { 346 access |= GENERIC_WRITE 347 } 348 if mode&O_APPEND != 0 { 349 access &^= GENERIC_WRITE 350 access |= FILE_APPEND_DATA 351 } 352 sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE) 353 var sa *SecurityAttributes 354 if mode&O_CLOEXEC == 0 { 355 sa = makeInheritSa() 356 } 357 var createmode uint32 358 switch { 359 case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL): 360 createmode = CREATE_NEW 361 case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC): 362 createmode = CREATE_ALWAYS 363 case mode&O_CREAT == O_CREAT: 364 createmode = OPEN_ALWAYS 365 case mode&O_TRUNC == O_TRUNC: 366 createmode = TRUNCATE_EXISTING 367 default: 368 createmode = OPEN_EXISTING 369 } 370 h, e := CreateFile(pathp, access, sharemode, sa, createmode, FILE_ATTRIBUTE_NORMAL, 0) 371 return h, e 372} 373 374func Read(fd Handle, p []byte) (n int, err error) { 375 var done uint32 376 e := ReadFile(fd, p, &done, nil) 377 if e != nil { 378 if e == ERROR_BROKEN_PIPE { 379 // NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin 380 return 0, nil 381 } 382 return 0, e 383 } 384 if raceenabled { 385 if done > 0 { 386 raceWriteRange(unsafe.Pointer(&p[0]), int(done)) 387 } 388 raceAcquire(unsafe.Pointer(&ioSync)) 389 } 390 return int(done), nil 391} 392 393func Write(fd Handle, p []byte) (n int, err error) { 394 if raceenabled { 395 raceReleaseMerge(unsafe.Pointer(&ioSync)) 396 } 397 var done uint32 398 e := WriteFile(fd, p, &done, nil) 399 if e != nil { 400 return 0, e 401 } 402 if raceenabled && done > 0 { 403 raceReadRange(unsafe.Pointer(&p[0]), int(done)) 404 } 405 return int(done), nil 406} 407 408var ioSync int64 409 410func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) { 411 var w uint32 412 switch whence { 413 case 0: 414 w = FILE_BEGIN 415 case 1: 416 w = FILE_CURRENT 417 case 2: 418 w = FILE_END 419 } 420 hi := int32(offset >> 32) 421 lo := int32(offset) 422 // use GetFileType to check pipe, pipe can't do seek 423 ft, _ := GetFileType(fd) 424 if ft == FILE_TYPE_PIPE { 425 return 0, syscall.EPIPE 426 } 427 rlo, e := SetFilePointer(fd, lo, &hi, w) 428 if e != nil { 429 return 0, e 430 } 431 return int64(hi)<<32 + int64(rlo), nil 432} 433 434func Close(fd Handle) (err error) { 435 return CloseHandle(fd) 436} 437 438var ( 439 Stdin = getStdHandle(STD_INPUT_HANDLE) 440 Stdout = getStdHandle(STD_OUTPUT_HANDLE) 441 Stderr = getStdHandle(STD_ERROR_HANDLE) 442) 443 444func getStdHandle(stdhandle uint32) (fd Handle) { 445 r, _ := GetStdHandle(stdhandle) 446 CloseOnExec(r) 447 return r 448} 449 450const ImplementsGetwd = true 451 452func Getwd() (wd string, err error) { 453 b := make([]uint16, 300) 454 n, e := GetCurrentDirectory(uint32(len(b)), &b[0]) 455 if e != nil { 456 return "", e 457 } 458 return string(utf16.Decode(b[0:n])), nil 459} 460 461func Chdir(path string) (err error) { 462 pathp, err := UTF16PtrFromString(path) 463 if err != nil { 464 return err 465 } 466 return SetCurrentDirectory(pathp) 467} 468 469func Mkdir(path string, mode uint32) (err error) { 470 pathp, err := UTF16PtrFromString(path) 471 if err != nil { 472 return err 473 } 474 return CreateDirectory(pathp, nil) 475} 476 477func Rmdir(path string) (err error) { 478 pathp, err := UTF16PtrFromString(path) 479 if err != nil { 480 return err 481 } 482 return RemoveDirectory(pathp) 483} 484 485func Unlink(path string) (err error) { 486 pathp, err := UTF16PtrFromString(path) 487 if err != nil { 488 return err 489 } 490 return DeleteFile(pathp) 491} 492 493func Rename(oldpath, newpath string) (err error) { 494 from, err := UTF16PtrFromString(oldpath) 495 if err != nil { 496 return err 497 } 498 to, err := UTF16PtrFromString(newpath) 499 if err != nil { 500 return err 501 } 502 return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING) 503} 504 505func ComputerName() (name string, err error) { 506 var n uint32 = MAX_COMPUTERNAME_LENGTH + 1 507 b := make([]uint16, n) 508 e := GetComputerName(&b[0], &n) 509 if e != nil { 510 return "", e 511 } 512 return string(utf16.Decode(b[0:n])), nil 513} 514 515func DurationSinceBoot() time.Duration { 516 return time.Duration(getTickCount64()) * time.Millisecond 517} 518 519func Ftruncate(fd Handle, length int64) (err error) { 520 curoffset, e := Seek(fd, 0, 1) 521 if e != nil { 522 return e 523 } 524 defer Seek(fd, curoffset, 0) 525 _, e = Seek(fd, length, 0) 526 if e != nil { 527 return e 528 } 529 e = SetEndOfFile(fd) 530 if e != nil { 531 return e 532 } 533 return nil 534} 535 536func Gettimeofday(tv *Timeval) (err error) { 537 var ft Filetime 538 GetSystemTimeAsFileTime(&ft) 539 *tv = NsecToTimeval(ft.Nanoseconds()) 540 return nil 541} 542 543func Pipe(p []Handle) (err error) { 544 if len(p) != 2 { 545 return syscall.EINVAL 546 } 547 var r, w Handle 548 e := CreatePipe(&r, &w, makeInheritSa(), 0) 549 if e != nil { 550 return e 551 } 552 p[0] = r 553 p[1] = w 554 return nil 555} 556 557func Utimes(path string, tv []Timeval) (err error) { 558 if len(tv) != 2 { 559 return syscall.EINVAL 560 } 561 pathp, e := UTF16PtrFromString(path) 562 if e != nil { 563 return e 564 } 565 h, e := CreateFile(pathp, 566 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, 567 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) 568 if e != nil { 569 return e 570 } 571 defer Close(h) 572 a := NsecToFiletime(tv[0].Nanoseconds()) 573 w := NsecToFiletime(tv[1].Nanoseconds()) 574 return SetFileTime(h, nil, &a, &w) 575} 576 577func UtimesNano(path string, ts []Timespec) (err error) { 578 if len(ts) != 2 { 579 return syscall.EINVAL 580 } 581 pathp, e := UTF16PtrFromString(path) 582 if e != nil { 583 return e 584 } 585 h, e := CreateFile(pathp, 586 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, 587 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) 588 if e != nil { 589 return e 590 } 591 defer Close(h) 592 a := NsecToFiletime(TimespecToNsec(ts[0])) 593 w := NsecToFiletime(TimespecToNsec(ts[1])) 594 return SetFileTime(h, nil, &a, &w) 595} 596 597func Fsync(fd Handle) (err error) { 598 return FlushFileBuffers(fd) 599} 600 601func Chmod(path string, mode uint32) (err error) { 602 p, e := UTF16PtrFromString(path) 603 if e != nil { 604 return e 605 } 606 attrs, e := GetFileAttributes(p) 607 if e != nil { 608 return e 609 } 610 if mode&S_IWRITE != 0 { 611 attrs &^= FILE_ATTRIBUTE_READONLY 612 } else { 613 attrs |= FILE_ATTRIBUTE_READONLY 614 } 615 return SetFileAttributes(p, attrs) 616} 617 618func LoadGetSystemTimePreciseAsFileTime() error { 619 return procGetSystemTimePreciseAsFileTime.Find() 620} 621 622func LoadCancelIoEx() error { 623 return procCancelIoEx.Find() 624} 625 626func LoadSetFileCompletionNotificationModes() error { 627 return procSetFileCompletionNotificationModes.Find() 628} 629 630func WaitForMultipleObjects(handles []Handle, waitAll bool, waitMilliseconds uint32) (event uint32, err error) { 631 // Every other win32 array API takes arguments as "pointer, count", except for this function. So we 632 // can't declare it as a usual [] type, because mksyscall will use the opposite order. We therefore 633 // trivially stub this ourselves. 634 635 var handlePtr *Handle 636 if len(handles) > 0 { 637 handlePtr = &handles[0] 638 } 639 return waitForMultipleObjects(uint32(len(handles)), uintptr(unsafe.Pointer(handlePtr)), waitAll, waitMilliseconds) 640} 641 642// net api calls 643 644const socket_error = uintptr(^uint32(0)) 645 646//sys WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup 647//sys WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup 648//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 649//sys socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket 650//sys Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt 651//sys Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt 652//sys bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind 653//sys connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect 654//sys getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname 655//sys getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername 656//sys listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen 657//sys shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown 658//sys Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket 659//sys AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx 660//sys GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs 661//sys WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv 662//sys WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend 663//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 664//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 665//sys GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname 666//sys GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname 667//sys Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs 668//sys GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname 669//sys DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W 670//sys DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree 671//sys DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W 672//sys GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW 673//sys FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW 674//sys GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry 675//sys GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo 676//sys SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes 677//sys WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW 678//sys GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses 679//sys GetACP() (acp uint32) = kernel32.GetACP 680//sys MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar 681 682// For testing: clients can set this flag to force 683// creation of IPv6 sockets to return EAFNOSUPPORT. 684var SocketDisableIPv6 bool 685 686type RawSockaddrInet4 struct { 687 Family uint16 688 Port uint16 689 Addr [4]byte /* in_addr */ 690 Zero [8]uint8 691} 692 693type RawSockaddrInet6 struct { 694 Family uint16 695 Port uint16 696 Flowinfo uint32 697 Addr [16]byte /* in6_addr */ 698 Scope_id uint32 699} 700 701type RawSockaddr struct { 702 Family uint16 703 Data [14]int8 704} 705 706type RawSockaddrAny struct { 707 Addr RawSockaddr 708 Pad [100]int8 709} 710 711type Sockaddr interface { 712 sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs 713} 714 715type SockaddrInet4 struct { 716 Port int 717 Addr [4]byte 718 raw RawSockaddrInet4 719} 720 721func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) { 722 if sa.Port < 0 || sa.Port > 0xFFFF { 723 return nil, 0, syscall.EINVAL 724 } 725 sa.raw.Family = AF_INET 726 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 727 p[0] = byte(sa.Port >> 8) 728 p[1] = byte(sa.Port) 729 for i := 0; i < len(sa.Addr); i++ { 730 sa.raw.Addr[i] = sa.Addr[i] 731 } 732 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil 733} 734 735type SockaddrInet6 struct { 736 Port int 737 ZoneId uint32 738 Addr [16]byte 739 raw RawSockaddrInet6 740} 741 742func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) { 743 if sa.Port < 0 || sa.Port > 0xFFFF { 744 return nil, 0, syscall.EINVAL 745 } 746 sa.raw.Family = AF_INET6 747 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 748 p[0] = byte(sa.Port >> 8) 749 p[1] = byte(sa.Port) 750 sa.raw.Scope_id = sa.ZoneId 751 for i := 0; i < len(sa.Addr); i++ { 752 sa.raw.Addr[i] = sa.Addr[i] 753 } 754 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil 755} 756 757type RawSockaddrUnix struct { 758 Family uint16 759 Path [UNIX_PATH_MAX]int8 760} 761 762type SockaddrUnix struct { 763 Name string 764 raw RawSockaddrUnix 765} 766 767func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) { 768 name := sa.Name 769 n := len(name) 770 if n > len(sa.raw.Path) { 771 return nil, 0, syscall.EINVAL 772 } 773 if n == len(sa.raw.Path) && name[0] != '@' { 774 return nil, 0, syscall.EINVAL 775 } 776 sa.raw.Family = AF_UNIX 777 for i := 0; i < n; i++ { 778 sa.raw.Path[i] = int8(name[i]) 779 } 780 // length is family (uint16), name, NUL. 781 sl := int32(2) 782 if n > 0 { 783 sl += int32(n) + 1 784 } 785 if sa.raw.Path[0] == '@' { 786 sa.raw.Path[0] = 0 787 // Don't count trailing NUL for abstract address. 788 sl-- 789 } 790 791 return unsafe.Pointer(&sa.raw), sl, nil 792} 793 794func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) { 795 switch rsa.Addr.Family { 796 case AF_UNIX: 797 pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) 798 sa := new(SockaddrUnix) 799 if pp.Path[0] == 0 { 800 // "Abstract" Unix domain socket. 801 // Rewrite leading NUL as @ for textual display. 802 // (This is the standard convention.) 803 // Not friendly to overwrite in place, 804 // but the callers below don't care. 805 pp.Path[0] = '@' 806 } 807 808 // Assume path ends at NUL. 809 // This is not technically the Linux semantics for 810 // abstract Unix domain sockets--they are supposed 811 // to be uninterpreted fixed-size binary blobs--but 812 // everyone uses this convention. 813 n := 0 814 for n < len(pp.Path) && pp.Path[n] != 0 { 815 n++ 816 } 817 bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n] 818 sa.Name = string(bytes) 819 return sa, nil 820 821 case AF_INET: 822 pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) 823 sa := new(SockaddrInet4) 824 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 825 sa.Port = int(p[0])<<8 + int(p[1]) 826 for i := 0; i < len(sa.Addr); i++ { 827 sa.Addr[i] = pp.Addr[i] 828 } 829 return sa, nil 830 831 case AF_INET6: 832 pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) 833 sa := new(SockaddrInet6) 834 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 835 sa.Port = int(p[0])<<8 + int(p[1]) 836 sa.ZoneId = pp.Scope_id 837 for i := 0; i < len(sa.Addr); i++ { 838 sa.Addr[i] = pp.Addr[i] 839 } 840 return sa, nil 841 } 842 return nil, syscall.EAFNOSUPPORT 843} 844 845func Socket(domain, typ, proto int) (fd Handle, err error) { 846 if domain == AF_INET6 && SocketDisableIPv6 { 847 return InvalidHandle, syscall.EAFNOSUPPORT 848 } 849 return socket(int32(domain), int32(typ), int32(proto)) 850} 851 852func SetsockoptInt(fd Handle, level, opt int, value int) (err error) { 853 v := int32(value) 854 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v))) 855} 856 857func Bind(fd Handle, sa Sockaddr) (err error) { 858 ptr, n, err := sa.sockaddr() 859 if err != nil { 860 return err 861 } 862 return bind(fd, ptr, n) 863} 864 865func Connect(fd Handle, sa Sockaddr) (err error) { 866 ptr, n, err := sa.sockaddr() 867 if err != nil { 868 return err 869 } 870 return connect(fd, ptr, n) 871} 872 873func Getsockname(fd Handle) (sa Sockaddr, err error) { 874 var rsa RawSockaddrAny 875 l := int32(unsafe.Sizeof(rsa)) 876 if err = getsockname(fd, &rsa, &l); err != nil { 877 return 878 } 879 return rsa.Sockaddr() 880} 881 882func Getpeername(fd Handle) (sa Sockaddr, err error) { 883 var rsa RawSockaddrAny 884 l := int32(unsafe.Sizeof(rsa)) 885 if err = getpeername(fd, &rsa, &l); err != nil { 886 return 887 } 888 return rsa.Sockaddr() 889} 890 891func Listen(s Handle, n int) (err error) { 892 return listen(s, int32(n)) 893} 894 895func Shutdown(fd Handle, how int) (err error) { 896 return shutdown(fd, int32(how)) 897} 898 899func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) { 900 rsa, l, err := to.sockaddr() 901 if err != nil { 902 return err 903 } 904 return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine) 905} 906 907func LoadGetAddrInfo() error { 908 return procGetAddrInfoW.Find() 909} 910 911var connectExFunc struct { 912 once sync.Once 913 addr uintptr 914 err error 915} 916 917func LoadConnectEx() error { 918 connectExFunc.once.Do(func() { 919 var s Handle 920 s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) 921 if connectExFunc.err != nil { 922 return 923 } 924 defer CloseHandle(s) 925 var n uint32 926 connectExFunc.err = WSAIoctl(s, 927 SIO_GET_EXTENSION_FUNCTION_POINTER, 928 (*byte)(unsafe.Pointer(&WSAID_CONNECTEX)), 929 uint32(unsafe.Sizeof(WSAID_CONNECTEX)), 930 (*byte)(unsafe.Pointer(&connectExFunc.addr)), 931 uint32(unsafe.Sizeof(connectExFunc.addr)), 932 &n, nil, 0) 933 }) 934 return connectExFunc.err 935} 936 937func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) { 938 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) 939 if r1 == 0 { 940 if e1 != 0 { 941 err = error(e1) 942 } else { 943 err = syscall.EINVAL 944 } 945 } 946 return 947} 948 949func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error { 950 err := LoadConnectEx() 951 if err != nil { 952 return errorspkg.New("failed to find ConnectEx: " + err.Error()) 953 } 954 ptr, n, err := sa.sockaddr() 955 if err != nil { 956 return err 957 } 958 return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped) 959} 960 961var sendRecvMsgFunc struct { 962 once sync.Once 963 sendAddr uintptr 964 recvAddr uintptr 965 err error 966} 967 968func loadWSASendRecvMsg() error { 969 sendRecvMsgFunc.once.Do(func() { 970 var s Handle 971 s, sendRecvMsgFunc.err = Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) 972 if sendRecvMsgFunc.err != nil { 973 return 974 } 975 defer CloseHandle(s) 976 var n uint32 977 sendRecvMsgFunc.err = WSAIoctl(s, 978 SIO_GET_EXTENSION_FUNCTION_POINTER, 979 (*byte)(unsafe.Pointer(&WSAID_WSARECVMSG)), 980 uint32(unsafe.Sizeof(WSAID_WSARECVMSG)), 981 (*byte)(unsafe.Pointer(&sendRecvMsgFunc.recvAddr)), 982 uint32(unsafe.Sizeof(sendRecvMsgFunc.recvAddr)), 983 &n, nil, 0) 984 if sendRecvMsgFunc.err != nil { 985 return 986 } 987 sendRecvMsgFunc.err = WSAIoctl(s, 988 SIO_GET_EXTENSION_FUNCTION_POINTER, 989 (*byte)(unsafe.Pointer(&WSAID_WSASENDMSG)), 990 uint32(unsafe.Sizeof(WSAID_WSASENDMSG)), 991 (*byte)(unsafe.Pointer(&sendRecvMsgFunc.sendAddr)), 992 uint32(unsafe.Sizeof(sendRecvMsgFunc.sendAddr)), 993 &n, nil, 0) 994 }) 995 return sendRecvMsgFunc.err 996} 997 998func WSASendMsg(fd Handle, msg *WSAMsg, flags uint32, bytesSent *uint32, overlapped *Overlapped, croutine *byte) error { 999 err := loadWSASendRecvMsg() 1000 if err != nil { 1001 return err 1002 } 1003 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))) 1004 if r1 == socket_error { 1005 if e1 != 0 { 1006 err = errnoErr(e1) 1007 } else { 1008 err = syscall.EINVAL 1009 } 1010 } 1011 return err 1012} 1013 1014func WSARecvMsg(fd Handle, msg *WSAMsg, bytesReceived *uint32, overlapped *Overlapped, croutine *byte) error { 1015 err := loadWSASendRecvMsg() 1016 if err != nil { 1017 return err 1018 } 1019 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) 1020 if r1 == socket_error { 1021 if e1 != 0 { 1022 err = errnoErr(e1) 1023 } else { 1024 err = syscall.EINVAL 1025 } 1026 } 1027 return err 1028} 1029 1030// Invented structures to support what package os expects. 1031type Rusage struct { 1032 CreationTime Filetime 1033 ExitTime Filetime 1034 KernelTime Filetime 1035 UserTime Filetime 1036} 1037 1038type WaitStatus struct { 1039 ExitCode uint32 1040} 1041 1042func (w WaitStatus) Exited() bool { return true } 1043 1044func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) } 1045 1046func (w WaitStatus) Signal() Signal { return -1 } 1047 1048func (w WaitStatus) CoreDump() bool { return false } 1049 1050func (w WaitStatus) Stopped() bool { return false } 1051 1052func (w WaitStatus) Continued() bool { return false } 1053 1054func (w WaitStatus) StopSignal() Signal { return -1 } 1055 1056func (w WaitStatus) Signaled() bool { return false } 1057 1058func (w WaitStatus) TrapCause() int { return -1 } 1059 1060// Timespec is an invented structure on Windows, but here for 1061// consistency with the corresponding package for other operating systems. 1062type Timespec struct { 1063 Sec int64 1064 Nsec int64 1065} 1066 1067func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } 1068 1069func NsecToTimespec(nsec int64) (ts Timespec) { 1070 ts.Sec = nsec / 1e9 1071 ts.Nsec = nsec % 1e9 1072 return 1073} 1074 1075// TODO(brainman): fix all needed for net 1076 1077func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS } 1078func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) { 1079 return 0, nil, syscall.EWINDOWS 1080} 1081func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) { return syscall.EWINDOWS } 1082func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS } 1083 1084// The Linger struct is wrong but we only noticed after Go 1. 1085// sysLinger is the real system call structure. 1086 1087// BUG(brainman): The definition of Linger is not appropriate for direct use 1088// with Setsockopt and Getsockopt. 1089// Use SetsockoptLinger instead. 1090 1091type Linger struct { 1092 Onoff int32 1093 Linger int32 1094} 1095 1096type sysLinger struct { 1097 Onoff uint16 1098 Linger uint16 1099} 1100 1101type IPMreq struct { 1102 Multiaddr [4]byte /* in_addr */ 1103 Interface [4]byte /* in_addr */ 1104} 1105 1106type IPv6Mreq struct { 1107 Multiaddr [16]byte /* in6_addr */ 1108 Interface uint32 1109} 1110 1111func GetsockoptInt(fd Handle, level, opt int) (int, error) { return -1, syscall.EWINDOWS } 1112 1113func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) { 1114 sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)} 1115 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys))) 1116} 1117 1118func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) { 1119 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4) 1120} 1121func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) { 1122 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq))) 1123} 1124func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) { 1125 return syscall.EWINDOWS 1126} 1127 1128func Getpid() (pid int) { return int(GetCurrentProcessId()) } 1129 1130func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) { 1131 // NOTE(rsc): The Win32finddata struct is wrong for the system call: 1132 // the two paths are each one uint16 short. Use the correct struct, 1133 // a win32finddata1, and then copy the results out. 1134 // There is no loss of expressivity here, because the final 1135 // uint16, if it is used, is supposed to be a NUL, and Go doesn't need that. 1136 // For Go 1.1, we might avoid the allocation of win32finddata1 here 1137 // by adding a final Bug [2]uint16 field to the struct and then 1138 // adjusting the fields in the result directly. 1139 var data1 win32finddata1 1140 handle, err = findFirstFile1(name, &data1) 1141 if err == nil { 1142 copyFindData(data, &data1) 1143 } 1144 return 1145} 1146 1147func FindNextFile(handle Handle, data *Win32finddata) (err error) { 1148 var data1 win32finddata1 1149 err = findNextFile1(handle, &data1) 1150 if err == nil { 1151 copyFindData(data, &data1) 1152 } 1153 return 1154} 1155 1156func getProcessEntry(pid int) (*ProcessEntry32, error) { 1157 snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) 1158 if err != nil { 1159 return nil, err 1160 } 1161 defer CloseHandle(snapshot) 1162 var procEntry ProcessEntry32 1163 procEntry.Size = uint32(unsafe.Sizeof(procEntry)) 1164 if err = Process32First(snapshot, &procEntry); err != nil { 1165 return nil, err 1166 } 1167 for { 1168 if procEntry.ProcessID == uint32(pid) { 1169 return &procEntry, nil 1170 } 1171 err = Process32Next(snapshot, &procEntry) 1172 if err != nil { 1173 return nil, err 1174 } 1175 } 1176} 1177 1178func Getppid() (ppid int) { 1179 pe, err := getProcessEntry(Getpid()) 1180 if err != nil { 1181 return -1 1182 } 1183 return int(pe.ParentProcessID) 1184} 1185 1186// TODO(brainman): fix all needed for os 1187func Fchdir(fd Handle) (err error) { return syscall.EWINDOWS } 1188func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS } 1189func Symlink(path, link string) (err error) { return syscall.EWINDOWS } 1190 1191func Fchmod(fd Handle, mode uint32) (err error) { return syscall.EWINDOWS } 1192func Chown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } 1193func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } 1194func Fchown(fd Handle, uid int, gid int) (err error) { return syscall.EWINDOWS } 1195 1196func Getuid() (uid int) { return -1 } 1197func Geteuid() (euid int) { return -1 } 1198func Getgid() (gid int) { return -1 } 1199func Getegid() (egid int) { return -1 } 1200func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS } 1201 1202type Signal int 1203 1204func (s Signal) Signal() {} 1205 1206func (s Signal) String() string { 1207 if 0 <= s && int(s) < len(signals) { 1208 str := signals[s] 1209 if str != "" { 1210 return str 1211 } 1212 } 1213 return "signal " + itoa(int(s)) 1214} 1215 1216func LoadCreateSymbolicLink() error { 1217 return procCreateSymbolicLinkW.Find() 1218} 1219 1220// Readlink returns the destination of the named symbolic link. 1221func Readlink(path string, buf []byte) (n int, err error) { 1222 fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING, 1223 FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0) 1224 if err != nil { 1225 return -1, err 1226 } 1227 defer CloseHandle(fd) 1228 1229 rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE) 1230 var bytesReturned uint32 1231 err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil) 1232 if err != nil { 1233 return -1, err 1234 } 1235 1236 rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0])) 1237 var s string 1238 switch rdb.ReparseTag { 1239 case IO_REPARSE_TAG_SYMLINK: 1240 data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) 1241 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) 1242 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) 1243 case IO_REPARSE_TAG_MOUNT_POINT: 1244 data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) 1245 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) 1246 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) 1247 default: 1248 // the path is not a symlink or junction but another type of reparse 1249 // point 1250 return -1, syscall.ENOENT 1251 } 1252 n = copy(buf, []byte(s)) 1253 1254 return n, nil 1255} 1256 1257// GUIDFromString parses a string in the form of 1258// "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}" into a GUID. 1259func GUIDFromString(str string) (GUID, error) { 1260 guid := GUID{} 1261 str16, err := syscall.UTF16PtrFromString(str) 1262 if err != nil { 1263 return guid, err 1264 } 1265 err = clsidFromString(str16, &guid) 1266 if err != nil { 1267 return guid, err 1268 } 1269 return guid, nil 1270} 1271 1272// GenerateGUID creates a new random GUID. 1273func GenerateGUID() (GUID, error) { 1274 guid := GUID{} 1275 err := coCreateGuid(&guid) 1276 if err != nil { 1277 return guid, err 1278 } 1279 return guid, nil 1280} 1281 1282// String returns the canonical string form of the GUID, 1283// in the form of "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}". 1284func (guid GUID) String() string { 1285 var str [100]uint16 1286 chars := stringFromGUID2(&guid, &str[0], int32(len(str))) 1287 if chars <= 1 { 1288 return "" 1289 } 1290 return string(utf16.Decode(str[:chars-1])) 1291} 1292 1293// KnownFolderPath returns a well-known folder path for the current user, specified by one of 1294// the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag. 1295func KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) { 1296 return Token(0).KnownFolderPath(folderID, flags) 1297} 1298 1299// KnownFolderPath returns a well-known folder path for the user token, specified by one of 1300// the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag. 1301func (t Token) KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) { 1302 var p *uint16 1303 err := shGetKnownFolderPath(folderID, flags, t, &p) 1304 if err != nil { 1305 return "", err 1306 } 1307 defer CoTaskMemFree(unsafe.Pointer(p)) 1308 return UTF16ToString((*[(1 << 30) - 1]uint16)(unsafe.Pointer(p))[:]), nil 1309} 1310 1311// RtlGetVersion returns the version of the underlying operating system, ignoring 1312// manifest semantics but is affected by the application compatibility layer. 1313func RtlGetVersion() *OsVersionInfoEx { 1314 info := &OsVersionInfoEx{} 1315 info.osVersionInfoSize = uint32(unsafe.Sizeof(*info)) 1316 // According to documentation, this function always succeeds. 1317 // The function doesn't even check the validity of the 1318 // osVersionInfoSize member. Disassembling ntdll.dll indicates 1319 // that the documentation is indeed correct about that. 1320 _ = rtlGetVersion(info) 1321 return info 1322} 1323 1324// RtlGetNtVersionNumbers returns the version of the underlying operating system, 1325// ignoring manifest semantics and the application compatibility layer. 1326func RtlGetNtVersionNumbers() (majorVersion, minorVersion, buildNumber uint32) { 1327 rtlGetNtVersionNumbers(&majorVersion, &minorVersion, &buildNumber) 1328 buildNumber &= 0xffff 1329 return 1330} 1331