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) 272 273// Volume Management Functions 274//sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW 275//sys DeleteVolumeMountPoint(volumeMountPoint *uint16) (err error) = DeleteVolumeMountPointW 276//sys FindFirstVolume(volumeName *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeW 277//sys FindFirstVolumeMountPoint(rootPathName *uint16, volumeMountPoint *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeMountPointW 278//sys FindNextVolume(findVolume Handle, volumeName *uint16, bufferLength uint32) (err error) = FindNextVolumeW 279//sys FindNextVolumeMountPoint(findVolumeMountPoint Handle, volumeMountPoint *uint16, bufferLength uint32) (err error) = FindNextVolumeMountPointW 280//sys FindVolumeClose(findVolume Handle) (err error) 281//sys FindVolumeMountPointClose(findVolumeMountPoint Handle) (err error) 282//sys GetDriveType(rootPathName *uint16) (driveType uint32) = GetDriveTypeW 283//sys GetLogicalDrives() (drivesBitMask uint32, err error) [failretval==0] 284//sys GetLogicalDriveStrings(bufferLength uint32, buffer *uint16) (n uint32, err error) [failretval==0] = GetLogicalDriveStringsW 285//sys GetVolumeInformation(rootPathName *uint16, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationW 286//sys GetVolumeInformationByHandle(file Handle, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationByHandleW 287//sys GetVolumeNameForVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16, bufferlength uint32) (err error) = GetVolumeNameForVolumeMountPointW 288//sys GetVolumePathName(fileName *uint16, volumePathName *uint16, bufferLength uint32) (err error) = GetVolumePathNameW 289//sys GetVolumePathNamesForVolumeName(volumeName *uint16, volumePathNames *uint16, bufferLength uint32, returnLength *uint32) (err error) = GetVolumePathNamesForVolumeNameW 290//sys QueryDosDevice(deviceName *uint16, targetPath *uint16, max uint32) (n uint32, err error) [failretval==0] = QueryDosDeviceW 291//sys SetVolumeLabel(rootPathName *uint16, volumeName *uint16) (err error) = SetVolumeLabelW 292//sys SetVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16) (err error) = SetVolumeMountPointW 293//sys MessageBox(hwnd Handle, text *uint16, caption *uint16, boxtype uint32) (ret int32, err error) [failretval==0] = user32.MessageBoxW 294//sys clsidFromString(lpsz *uint16, pclsid *GUID) (ret error) = ole32.CLSIDFromString 295//sys stringFromGUID2(rguid *GUID, lpsz *uint16, cchMax int32) (chars int32) = ole32.StringFromGUID2 296//sys coCreateGuid(pguid *GUID) (ret error) = ole32.CoCreateGuid 297//sys CoTaskMemFree(address unsafe.Pointer) = ole32.CoTaskMemFree 298//sys rtlGetVersion(info *OsVersionInfoEx) (ret error) = ntdll.RtlGetVersion 299 300// syscall interface implementation for other packages 301 302// GetProcAddressByOrdinal retrieves the address of the exported 303// function from module by ordinal. 304func GetProcAddressByOrdinal(module Handle, ordinal uintptr) (proc uintptr, err error) { 305 r0, _, e1 := syscall.Syscall(procGetProcAddress.Addr(), 2, uintptr(module), ordinal, 0) 306 proc = uintptr(r0) 307 if proc == 0 { 308 if e1 != 0 { 309 err = errnoErr(e1) 310 } else { 311 err = syscall.EINVAL 312 } 313 } 314 return 315} 316 317func Exit(code int) { ExitProcess(uint32(code)) } 318 319func makeInheritSa() *SecurityAttributes { 320 var sa SecurityAttributes 321 sa.Length = uint32(unsafe.Sizeof(sa)) 322 sa.InheritHandle = 1 323 return &sa 324} 325 326func Open(path string, mode int, perm uint32) (fd Handle, err error) { 327 if len(path) == 0 { 328 return InvalidHandle, ERROR_FILE_NOT_FOUND 329 } 330 pathp, err := UTF16PtrFromString(path) 331 if err != nil { 332 return InvalidHandle, err 333 } 334 var access uint32 335 switch mode & (O_RDONLY | O_WRONLY | O_RDWR) { 336 case O_RDONLY: 337 access = GENERIC_READ 338 case O_WRONLY: 339 access = GENERIC_WRITE 340 case O_RDWR: 341 access = GENERIC_READ | GENERIC_WRITE 342 } 343 if mode&O_CREAT != 0 { 344 access |= GENERIC_WRITE 345 } 346 if mode&O_APPEND != 0 { 347 access &^= GENERIC_WRITE 348 access |= FILE_APPEND_DATA 349 } 350 sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE) 351 var sa *SecurityAttributes 352 if mode&O_CLOEXEC == 0 { 353 sa = makeInheritSa() 354 } 355 var createmode uint32 356 switch { 357 case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL): 358 createmode = CREATE_NEW 359 case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC): 360 createmode = CREATE_ALWAYS 361 case mode&O_CREAT == O_CREAT: 362 createmode = OPEN_ALWAYS 363 case mode&O_TRUNC == O_TRUNC: 364 createmode = TRUNCATE_EXISTING 365 default: 366 createmode = OPEN_EXISTING 367 } 368 h, e := CreateFile(pathp, access, sharemode, sa, createmode, FILE_ATTRIBUTE_NORMAL, 0) 369 return h, e 370} 371 372func Read(fd Handle, p []byte) (n int, err error) { 373 var done uint32 374 e := ReadFile(fd, p, &done, nil) 375 if e != nil { 376 if e == ERROR_BROKEN_PIPE { 377 // NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin 378 return 0, nil 379 } 380 return 0, e 381 } 382 if raceenabled { 383 if done > 0 { 384 raceWriteRange(unsafe.Pointer(&p[0]), int(done)) 385 } 386 raceAcquire(unsafe.Pointer(&ioSync)) 387 } 388 return int(done), nil 389} 390 391func Write(fd Handle, p []byte) (n int, err error) { 392 if raceenabled { 393 raceReleaseMerge(unsafe.Pointer(&ioSync)) 394 } 395 var done uint32 396 e := WriteFile(fd, p, &done, nil) 397 if e != nil { 398 return 0, e 399 } 400 if raceenabled && done > 0 { 401 raceReadRange(unsafe.Pointer(&p[0]), int(done)) 402 } 403 return int(done), nil 404} 405 406var ioSync int64 407 408func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) { 409 var w uint32 410 switch whence { 411 case 0: 412 w = FILE_BEGIN 413 case 1: 414 w = FILE_CURRENT 415 case 2: 416 w = FILE_END 417 } 418 hi := int32(offset >> 32) 419 lo := int32(offset) 420 // use GetFileType to check pipe, pipe can't do seek 421 ft, _ := GetFileType(fd) 422 if ft == FILE_TYPE_PIPE { 423 return 0, syscall.EPIPE 424 } 425 rlo, e := SetFilePointer(fd, lo, &hi, w) 426 if e != nil { 427 return 0, e 428 } 429 return int64(hi)<<32 + int64(rlo), nil 430} 431 432func Close(fd Handle) (err error) { 433 return CloseHandle(fd) 434} 435 436var ( 437 Stdin = getStdHandle(STD_INPUT_HANDLE) 438 Stdout = getStdHandle(STD_OUTPUT_HANDLE) 439 Stderr = getStdHandle(STD_ERROR_HANDLE) 440) 441 442func getStdHandle(stdhandle uint32) (fd Handle) { 443 r, _ := GetStdHandle(stdhandle) 444 CloseOnExec(r) 445 return r 446} 447 448const ImplementsGetwd = true 449 450func Getwd() (wd string, err error) { 451 b := make([]uint16, 300) 452 n, e := GetCurrentDirectory(uint32(len(b)), &b[0]) 453 if e != nil { 454 return "", e 455 } 456 return string(utf16.Decode(b[0:n])), nil 457} 458 459func Chdir(path string) (err error) { 460 pathp, err := UTF16PtrFromString(path) 461 if err != nil { 462 return err 463 } 464 return SetCurrentDirectory(pathp) 465} 466 467func Mkdir(path string, mode uint32) (err error) { 468 pathp, err := UTF16PtrFromString(path) 469 if err != nil { 470 return err 471 } 472 return CreateDirectory(pathp, nil) 473} 474 475func Rmdir(path string) (err error) { 476 pathp, err := UTF16PtrFromString(path) 477 if err != nil { 478 return err 479 } 480 return RemoveDirectory(pathp) 481} 482 483func Unlink(path string) (err error) { 484 pathp, err := UTF16PtrFromString(path) 485 if err != nil { 486 return err 487 } 488 return DeleteFile(pathp) 489} 490 491func Rename(oldpath, newpath string) (err error) { 492 from, err := UTF16PtrFromString(oldpath) 493 if err != nil { 494 return err 495 } 496 to, err := UTF16PtrFromString(newpath) 497 if err != nil { 498 return err 499 } 500 return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING) 501} 502 503func ComputerName() (name string, err error) { 504 var n uint32 = MAX_COMPUTERNAME_LENGTH + 1 505 b := make([]uint16, n) 506 e := GetComputerName(&b[0], &n) 507 if e != nil { 508 return "", e 509 } 510 return string(utf16.Decode(b[0:n])), nil 511} 512 513func DurationSinceBoot() time.Duration { 514 return time.Duration(getTickCount64()) * time.Millisecond 515} 516 517func Ftruncate(fd Handle, length int64) (err error) { 518 curoffset, e := Seek(fd, 0, 1) 519 if e != nil { 520 return e 521 } 522 defer Seek(fd, curoffset, 0) 523 _, e = Seek(fd, length, 0) 524 if e != nil { 525 return e 526 } 527 e = SetEndOfFile(fd) 528 if e != nil { 529 return e 530 } 531 return nil 532} 533 534func Gettimeofday(tv *Timeval) (err error) { 535 var ft Filetime 536 GetSystemTimeAsFileTime(&ft) 537 *tv = NsecToTimeval(ft.Nanoseconds()) 538 return nil 539} 540 541func Pipe(p []Handle) (err error) { 542 if len(p) != 2 { 543 return syscall.EINVAL 544 } 545 var r, w Handle 546 e := CreatePipe(&r, &w, makeInheritSa(), 0) 547 if e != nil { 548 return e 549 } 550 p[0] = r 551 p[1] = w 552 return nil 553} 554 555func Utimes(path string, tv []Timeval) (err error) { 556 if len(tv) != 2 { 557 return syscall.EINVAL 558 } 559 pathp, e := UTF16PtrFromString(path) 560 if e != nil { 561 return e 562 } 563 h, e := CreateFile(pathp, 564 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, 565 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) 566 if e != nil { 567 return e 568 } 569 defer Close(h) 570 a := NsecToFiletime(tv[0].Nanoseconds()) 571 w := NsecToFiletime(tv[1].Nanoseconds()) 572 return SetFileTime(h, nil, &a, &w) 573} 574 575func UtimesNano(path string, ts []Timespec) (err error) { 576 if len(ts) != 2 { 577 return syscall.EINVAL 578 } 579 pathp, e := UTF16PtrFromString(path) 580 if e != nil { 581 return e 582 } 583 h, e := CreateFile(pathp, 584 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, 585 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) 586 if e != nil { 587 return e 588 } 589 defer Close(h) 590 a := NsecToFiletime(TimespecToNsec(ts[0])) 591 w := NsecToFiletime(TimespecToNsec(ts[1])) 592 return SetFileTime(h, nil, &a, &w) 593} 594 595func Fsync(fd Handle) (err error) { 596 return FlushFileBuffers(fd) 597} 598 599func Chmod(path string, mode uint32) (err error) { 600 p, e := UTF16PtrFromString(path) 601 if e != nil { 602 return e 603 } 604 attrs, e := GetFileAttributes(p) 605 if e != nil { 606 return e 607 } 608 if mode&S_IWRITE != 0 { 609 attrs &^= FILE_ATTRIBUTE_READONLY 610 } else { 611 attrs |= FILE_ATTRIBUTE_READONLY 612 } 613 return SetFileAttributes(p, attrs) 614} 615 616func LoadGetSystemTimePreciseAsFileTime() error { 617 return procGetSystemTimePreciseAsFileTime.Find() 618} 619 620func LoadCancelIoEx() error { 621 return procCancelIoEx.Find() 622} 623 624func LoadSetFileCompletionNotificationModes() error { 625 return procSetFileCompletionNotificationModes.Find() 626} 627 628func WaitForMultipleObjects(handles []Handle, waitAll bool, waitMilliseconds uint32) (event uint32, err error) { 629 // Every other win32 array API takes arguments as "pointer, count", except for this function. So we 630 // can't declare it as a usual [] type, because mksyscall will use the opposite order. We therefore 631 // trivially stub this ourselves. 632 633 var handlePtr *Handle 634 if len(handles) > 0 { 635 handlePtr = &handles[0] 636 } 637 return waitForMultipleObjects(uint32(len(handles)), uintptr(unsafe.Pointer(handlePtr)), waitAll, waitMilliseconds) 638} 639 640// net api calls 641 642const socket_error = uintptr(^uint32(0)) 643 644//sys WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup 645//sys WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup 646//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 647//sys socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket 648//sys Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt 649//sys Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt 650//sys bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind 651//sys connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect 652//sys getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname 653//sys getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername 654//sys listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen 655//sys shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown 656//sys Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket 657//sys AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx 658//sys GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs 659//sys WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv 660//sys WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend 661//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 662//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 663//sys GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname 664//sys GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname 665//sys Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs 666//sys GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname 667//sys DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W 668//sys DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree 669//sys DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W 670//sys GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW 671//sys FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW 672//sys GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry 673//sys GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo 674//sys SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes 675//sys WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW 676//sys GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses 677//sys GetACP() (acp uint32) = kernel32.GetACP 678//sys MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar 679 680// For testing: clients can set this flag to force 681// creation of IPv6 sockets to return EAFNOSUPPORT. 682var SocketDisableIPv6 bool 683 684type RawSockaddrInet4 struct { 685 Family uint16 686 Port uint16 687 Addr [4]byte /* in_addr */ 688 Zero [8]uint8 689} 690 691type RawSockaddrInet6 struct { 692 Family uint16 693 Port uint16 694 Flowinfo uint32 695 Addr [16]byte /* in6_addr */ 696 Scope_id uint32 697} 698 699type RawSockaddr struct { 700 Family uint16 701 Data [14]int8 702} 703 704type RawSockaddrAny struct { 705 Addr RawSockaddr 706 Pad [100]int8 707} 708 709type Sockaddr interface { 710 sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs 711} 712 713type SockaddrInet4 struct { 714 Port int 715 Addr [4]byte 716 raw RawSockaddrInet4 717} 718 719func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) { 720 if sa.Port < 0 || sa.Port > 0xFFFF { 721 return nil, 0, syscall.EINVAL 722 } 723 sa.raw.Family = AF_INET 724 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 725 p[0] = byte(sa.Port >> 8) 726 p[1] = byte(sa.Port) 727 for i := 0; i < len(sa.Addr); i++ { 728 sa.raw.Addr[i] = sa.Addr[i] 729 } 730 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil 731} 732 733type SockaddrInet6 struct { 734 Port int 735 ZoneId uint32 736 Addr [16]byte 737 raw RawSockaddrInet6 738} 739 740func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) { 741 if sa.Port < 0 || sa.Port > 0xFFFF { 742 return nil, 0, syscall.EINVAL 743 } 744 sa.raw.Family = AF_INET6 745 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 746 p[0] = byte(sa.Port >> 8) 747 p[1] = byte(sa.Port) 748 sa.raw.Scope_id = sa.ZoneId 749 for i := 0; i < len(sa.Addr); i++ { 750 sa.raw.Addr[i] = sa.Addr[i] 751 } 752 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil 753} 754 755type RawSockaddrUnix struct { 756 Family uint16 757 Path [UNIX_PATH_MAX]int8 758} 759 760type SockaddrUnix struct { 761 Name string 762 raw RawSockaddrUnix 763} 764 765func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) { 766 name := sa.Name 767 n := len(name) 768 if n > len(sa.raw.Path) { 769 return nil, 0, syscall.EINVAL 770 } 771 if n == len(sa.raw.Path) && name[0] != '@' { 772 return nil, 0, syscall.EINVAL 773 } 774 sa.raw.Family = AF_UNIX 775 for i := 0; i < n; i++ { 776 sa.raw.Path[i] = int8(name[i]) 777 } 778 // length is family (uint16), name, NUL. 779 sl := int32(2) 780 if n > 0 { 781 sl += int32(n) + 1 782 } 783 if sa.raw.Path[0] == '@' { 784 sa.raw.Path[0] = 0 785 // Don't count trailing NUL for abstract address. 786 sl-- 787 } 788 789 return unsafe.Pointer(&sa.raw), sl, nil 790} 791 792func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) { 793 switch rsa.Addr.Family { 794 case AF_UNIX: 795 pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) 796 sa := new(SockaddrUnix) 797 if pp.Path[0] == 0 { 798 // "Abstract" Unix domain socket. 799 // Rewrite leading NUL as @ for textual display. 800 // (This is the standard convention.) 801 // Not friendly to overwrite in place, 802 // but the callers below don't care. 803 pp.Path[0] = '@' 804 } 805 806 // Assume path ends at NUL. 807 // This is not technically the Linux semantics for 808 // abstract Unix domain sockets--they are supposed 809 // to be uninterpreted fixed-size binary blobs--but 810 // everyone uses this convention. 811 n := 0 812 for n < len(pp.Path) && pp.Path[n] != 0 { 813 n++ 814 } 815 bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n] 816 sa.Name = string(bytes) 817 return sa, nil 818 819 case AF_INET: 820 pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) 821 sa := new(SockaddrInet4) 822 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 823 sa.Port = int(p[0])<<8 + int(p[1]) 824 for i := 0; i < len(sa.Addr); i++ { 825 sa.Addr[i] = pp.Addr[i] 826 } 827 return sa, nil 828 829 case AF_INET6: 830 pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) 831 sa := new(SockaddrInet6) 832 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 833 sa.Port = int(p[0])<<8 + int(p[1]) 834 sa.ZoneId = pp.Scope_id 835 for i := 0; i < len(sa.Addr); i++ { 836 sa.Addr[i] = pp.Addr[i] 837 } 838 return sa, nil 839 } 840 return nil, syscall.EAFNOSUPPORT 841} 842 843func Socket(domain, typ, proto int) (fd Handle, err error) { 844 if domain == AF_INET6 && SocketDisableIPv6 { 845 return InvalidHandle, syscall.EAFNOSUPPORT 846 } 847 return socket(int32(domain), int32(typ), int32(proto)) 848} 849 850func SetsockoptInt(fd Handle, level, opt int, value int) (err error) { 851 v := int32(value) 852 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v))) 853} 854 855func Bind(fd Handle, sa Sockaddr) (err error) { 856 ptr, n, err := sa.sockaddr() 857 if err != nil { 858 return err 859 } 860 return bind(fd, ptr, n) 861} 862 863func Connect(fd Handle, sa Sockaddr) (err error) { 864 ptr, n, err := sa.sockaddr() 865 if err != nil { 866 return err 867 } 868 return connect(fd, ptr, n) 869} 870 871func Getsockname(fd Handle) (sa Sockaddr, err error) { 872 var rsa RawSockaddrAny 873 l := int32(unsafe.Sizeof(rsa)) 874 if err = getsockname(fd, &rsa, &l); err != nil { 875 return 876 } 877 return rsa.Sockaddr() 878} 879 880func Getpeername(fd Handle) (sa Sockaddr, err error) { 881 var rsa RawSockaddrAny 882 l := int32(unsafe.Sizeof(rsa)) 883 if err = getpeername(fd, &rsa, &l); err != nil { 884 return 885 } 886 return rsa.Sockaddr() 887} 888 889func Listen(s Handle, n int) (err error) { 890 return listen(s, int32(n)) 891} 892 893func Shutdown(fd Handle, how int) (err error) { 894 return shutdown(fd, int32(how)) 895} 896 897func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) { 898 rsa, l, err := to.sockaddr() 899 if err != nil { 900 return err 901 } 902 return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine) 903} 904 905func LoadGetAddrInfo() error { 906 return procGetAddrInfoW.Find() 907} 908 909var connectExFunc struct { 910 once sync.Once 911 addr uintptr 912 err error 913} 914 915func LoadConnectEx() error { 916 connectExFunc.once.Do(func() { 917 var s Handle 918 s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) 919 if connectExFunc.err != nil { 920 return 921 } 922 defer CloseHandle(s) 923 var n uint32 924 connectExFunc.err = WSAIoctl(s, 925 SIO_GET_EXTENSION_FUNCTION_POINTER, 926 (*byte)(unsafe.Pointer(&WSAID_CONNECTEX)), 927 uint32(unsafe.Sizeof(WSAID_CONNECTEX)), 928 (*byte)(unsafe.Pointer(&connectExFunc.addr)), 929 uint32(unsafe.Sizeof(connectExFunc.addr)), 930 &n, nil, 0) 931 }) 932 return connectExFunc.err 933} 934 935func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) { 936 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) 937 if r1 == 0 { 938 if e1 != 0 { 939 err = error(e1) 940 } else { 941 err = syscall.EINVAL 942 } 943 } 944 return 945} 946 947func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error { 948 err := LoadConnectEx() 949 if err != nil { 950 return errorspkg.New("failed to find ConnectEx: " + err.Error()) 951 } 952 ptr, n, err := sa.sockaddr() 953 if err != nil { 954 return err 955 } 956 return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped) 957} 958 959var sendRecvMsgFunc struct { 960 once sync.Once 961 sendAddr uintptr 962 recvAddr uintptr 963 err error 964} 965 966func loadWSASendRecvMsg() error { 967 sendRecvMsgFunc.once.Do(func() { 968 var s Handle 969 s, sendRecvMsgFunc.err = Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) 970 if sendRecvMsgFunc.err != nil { 971 return 972 } 973 defer CloseHandle(s) 974 var n uint32 975 sendRecvMsgFunc.err = WSAIoctl(s, 976 SIO_GET_EXTENSION_FUNCTION_POINTER, 977 (*byte)(unsafe.Pointer(&WSAID_WSARECVMSG)), 978 uint32(unsafe.Sizeof(WSAID_WSARECVMSG)), 979 (*byte)(unsafe.Pointer(&sendRecvMsgFunc.recvAddr)), 980 uint32(unsafe.Sizeof(sendRecvMsgFunc.recvAddr)), 981 &n, nil, 0) 982 if sendRecvMsgFunc.err != nil { 983 return 984 } 985 sendRecvMsgFunc.err = WSAIoctl(s, 986 SIO_GET_EXTENSION_FUNCTION_POINTER, 987 (*byte)(unsafe.Pointer(&WSAID_WSASENDMSG)), 988 uint32(unsafe.Sizeof(WSAID_WSASENDMSG)), 989 (*byte)(unsafe.Pointer(&sendRecvMsgFunc.sendAddr)), 990 uint32(unsafe.Sizeof(sendRecvMsgFunc.sendAddr)), 991 &n, nil, 0) 992 }) 993 return sendRecvMsgFunc.err 994} 995 996func WSASendMsg(fd Handle, msg *WSAMsg, flags uint32, bytesSent *uint32, overlapped *Overlapped, croutine *byte) error { 997 err := loadWSASendRecvMsg() 998 if err != nil { 999 return err 1000 } 1001 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))) 1002 if r1 == socket_error { 1003 if e1 != 0 { 1004 err = errnoErr(e1) 1005 } else { 1006 err = syscall.EINVAL 1007 } 1008 } 1009 return err 1010} 1011 1012func WSARecvMsg(fd Handle, msg *WSAMsg, bytesReceived *uint32, overlapped *Overlapped, croutine *byte) error { 1013 err := loadWSASendRecvMsg() 1014 if err != nil { 1015 return err 1016 } 1017 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) 1018 if r1 == socket_error { 1019 if e1 != 0 { 1020 err = errnoErr(e1) 1021 } else { 1022 err = syscall.EINVAL 1023 } 1024 } 1025 return err 1026} 1027 1028// Invented structures to support what package os expects. 1029type Rusage struct { 1030 CreationTime Filetime 1031 ExitTime Filetime 1032 KernelTime Filetime 1033 UserTime Filetime 1034} 1035 1036type WaitStatus struct { 1037 ExitCode uint32 1038} 1039 1040func (w WaitStatus) Exited() bool { return true } 1041 1042func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) } 1043 1044func (w WaitStatus) Signal() Signal { return -1 } 1045 1046func (w WaitStatus) CoreDump() bool { return false } 1047 1048func (w WaitStatus) Stopped() bool { return false } 1049 1050func (w WaitStatus) Continued() bool { return false } 1051 1052func (w WaitStatus) StopSignal() Signal { return -1 } 1053 1054func (w WaitStatus) Signaled() bool { return false } 1055 1056func (w WaitStatus) TrapCause() int { return -1 } 1057 1058// Timespec is an invented structure on Windows, but here for 1059// consistency with the corresponding package for other operating systems. 1060type Timespec struct { 1061 Sec int64 1062 Nsec int64 1063} 1064 1065func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } 1066 1067func NsecToTimespec(nsec int64) (ts Timespec) { 1068 ts.Sec = nsec / 1e9 1069 ts.Nsec = nsec % 1e9 1070 return 1071} 1072 1073// TODO(brainman): fix all needed for net 1074 1075func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS } 1076func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) { 1077 return 0, nil, syscall.EWINDOWS 1078} 1079func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) { return syscall.EWINDOWS } 1080func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS } 1081 1082// The Linger struct is wrong but we only noticed after Go 1. 1083// sysLinger is the real system call structure. 1084 1085// BUG(brainman): The definition of Linger is not appropriate for direct use 1086// with Setsockopt and Getsockopt. 1087// Use SetsockoptLinger instead. 1088 1089type Linger struct { 1090 Onoff int32 1091 Linger int32 1092} 1093 1094type sysLinger struct { 1095 Onoff uint16 1096 Linger uint16 1097} 1098 1099type IPMreq struct { 1100 Multiaddr [4]byte /* in_addr */ 1101 Interface [4]byte /* in_addr */ 1102} 1103 1104type IPv6Mreq struct { 1105 Multiaddr [16]byte /* in6_addr */ 1106 Interface uint32 1107} 1108 1109func GetsockoptInt(fd Handle, level, opt int) (int, error) { return -1, syscall.EWINDOWS } 1110 1111func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) { 1112 sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)} 1113 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys))) 1114} 1115 1116func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) { 1117 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4) 1118} 1119func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) { 1120 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq))) 1121} 1122func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) { 1123 return syscall.EWINDOWS 1124} 1125 1126func Getpid() (pid int) { return int(GetCurrentProcessId()) } 1127 1128func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) { 1129 // NOTE(rsc): The Win32finddata struct is wrong for the system call: 1130 // the two paths are each one uint16 short. Use the correct struct, 1131 // a win32finddata1, and then copy the results out. 1132 // There is no loss of expressivity here, because the final 1133 // uint16, if it is used, is supposed to be a NUL, and Go doesn't need that. 1134 // For Go 1.1, we might avoid the allocation of win32finddata1 here 1135 // by adding a final Bug [2]uint16 field to the struct and then 1136 // adjusting the fields in the result directly. 1137 var data1 win32finddata1 1138 handle, err = findFirstFile1(name, &data1) 1139 if err == nil { 1140 copyFindData(data, &data1) 1141 } 1142 return 1143} 1144 1145func FindNextFile(handle Handle, data *Win32finddata) (err error) { 1146 var data1 win32finddata1 1147 err = findNextFile1(handle, &data1) 1148 if err == nil { 1149 copyFindData(data, &data1) 1150 } 1151 return 1152} 1153 1154func getProcessEntry(pid int) (*ProcessEntry32, error) { 1155 snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) 1156 if err != nil { 1157 return nil, err 1158 } 1159 defer CloseHandle(snapshot) 1160 var procEntry ProcessEntry32 1161 procEntry.Size = uint32(unsafe.Sizeof(procEntry)) 1162 if err = Process32First(snapshot, &procEntry); err != nil { 1163 return nil, err 1164 } 1165 for { 1166 if procEntry.ProcessID == uint32(pid) { 1167 return &procEntry, nil 1168 } 1169 err = Process32Next(snapshot, &procEntry) 1170 if err != nil { 1171 return nil, err 1172 } 1173 } 1174} 1175 1176func Getppid() (ppid int) { 1177 pe, err := getProcessEntry(Getpid()) 1178 if err != nil { 1179 return -1 1180 } 1181 return int(pe.ParentProcessID) 1182} 1183 1184// TODO(brainman): fix all needed for os 1185func Fchdir(fd Handle) (err error) { return syscall.EWINDOWS } 1186func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS } 1187func Symlink(path, link string) (err error) { return syscall.EWINDOWS } 1188 1189func Fchmod(fd Handle, mode uint32) (err error) { return syscall.EWINDOWS } 1190func Chown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } 1191func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } 1192func Fchown(fd Handle, uid int, gid int) (err error) { return syscall.EWINDOWS } 1193 1194func Getuid() (uid int) { return -1 } 1195func Geteuid() (euid int) { return -1 } 1196func Getgid() (gid int) { return -1 } 1197func Getegid() (egid int) { return -1 } 1198func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS } 1199 1200type Signal int 1201 1202func (s Signal) Signal() {} 1203 1204func (s Signal) String() string { 1205 if 0 <= s && int(s) < len(signals) { 1206 str := signals[s] 1207 if str != "" { 1208 return str 1209 } 1210 } 1211 return "signal " + itoa(int(s)) 1212} 1213 1214func LoadCreateSymbolicLink() error { 1215 return procCreateSymbolicLinkW.Find() 1216} 1217 1218// Readlink returns the destination of the named symbolic link. 1219func Readlink(path string, buf []byte) (n int, err error) { 1220 fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING, 1221 FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0) 1222 if err != nil { 1223 return -1, err 1224 } 1225 defer CloseHandle(fd) 1226 1227 rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE) 1228 var bytesReturned uint32 1229 err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil) 1230 if err != nil { 1231 return -1, err 1232 } 1233 1234 rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0])) 1235 var s string 1236 switch rdb.ReparseTag { 1237 case IO_REPARSE_TAG_SYMLINK: 1238 data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) 1239 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) 1240 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) 1241 case IO_REPARSE_TAG_MOUNT_POINT: 1242 data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) 1243 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) 1244 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) 1245 default: 1246 // the path is not a symlink or junction but another type of reparse 1247 // point 1248 return -1, syscall.ENOENT 1249 } 1250 n = copy(buf, []byte(s)) 1251 1252 return n, nil 1253} 1254 1255// GUIDFromString parses a string in the form of 1256// "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}" into a GUID. 1257func GUIDFromString(str string) (GUID, error) { 1258 guid := GUID{} 1259 str16, err := syscall.UTF16PtrFromString(str) 1260 if err != nil { 1261 return guid, err 1262 } 1263 err = clsidFromString(str16, &guid) 1264 if err != nil { 1265 return guid, err 1266 } 1267 return guid, nil 1268} 1269 1270// GenerateGUID creates a new random GUID. 1271func GenerateGUID() (GUID, error) { 1272 guid := GUID{} 1273 err := coCreateGuid(&guid) 1274 if err != nil { 1275 return guid, err 1276 } 1277 return guid, nil 1278} 1279 1280// String returns the canonical string form of the GUID, 1281// in the form of "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}". 1282func (guid GUID) String() string { 1283 var str [100]uint16 1284 chars := stringFromGUID2(&guid, &str[0], int32(len(str))) 1285 if chars <= 1 { 1286 return "" 1287 } 1288 return string(utf16.Decode(str[:chars-1])) 1289} 1290 1291// KnownFolderPath returns a well-known folder path for the current user, specified by one of 1292// the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag. 1293func KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) { 1294 return Token(0).KnownFolderPath(folderID, flags) 1295} 1296 1297// KnownFolderPath returns a well-known folder path for the user token, specified by one of 1298// the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag. 1299func (t Token) KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) { 1300 var p *uint16 1301 err := shGetKnownFolderPath(folderID, flags, t, &p) 1302 if err != nil { 1303 return "", err 1304 } 1305 defer CoTaskMemFree(unsafe.Pointer(p)) 1306 return UTF16ToString((*[(1 << 30) - 1]uint16)(unsafe.Pointer(p))[:]), nil 1307} 1308 1309// RtlGetVersion returns the true version of the underlying operating system, ignoring 1310// any manifesting or compatibility layers on top of the win32 layer. 1311func RtlGetVersion() *OsVersionInfoEx { 1312 info := &OsVersionInfoEx{} 1313 info.osVersionInfoSize = uint32(unsafe.Sizeof(*info)) 1314 // According to documentation, this function always succeeds. 1315 // The function doesn't even check the validity of the 1316 // osVersionInfoSize member. Disassembling ntdll.dll indicates 1317 // that the documentation is indeed correct about that. 1318 _ = rtlGetVersion(info) 1319 return info 1320} 1321