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 "unicode/utf16" 14 "unsafe" 15) 16 17type Handle uintptr 18 19const ( 20 InvalidHandle = ^Handle(0) 21 22 // Flags for DefineDosDevice. 23 DDD_EXACT_MATCH_ON_REMOVE = 0x00000004 24 DDD_NO_BROADCAST_SYSTEM = 0x00000008 25 DDD_RAW_TARGET_PATH = 0x00000001 26 DDD_REMOVE_DEFINITION = 0x00000002 27 28 // Return values for GetDriveType. 29 DRIVE_UNKNOWN = 0 30 DRIVE_NO_ROOT_DIR = 1 31 DRIVE_REMOVABLE = 2 32 DRIVE_FIXED = 3 33 DRIVE_REMOTE = 4 34 DRIVE_CDROM = 5 35 DRIVE_RAMDISK = 6 36 37 // File system flags from GetVolumeInformation and GetVolumeInformationByHandle. 38 FILE_CASE_SENSITIVE_SEARCH = 0x00000001 39 FILE_CASE_PRESERVED_NAMES = 0x00000002 40 FILE_FILE_COMPRESSION = 0x00000010 41 FILE_DAX_VOLUME = 0x20000000 42 FILE_NAMED_STREAMS = 0x00040000 43 FILE_PERSISTENT_ACLS = 0x00000008 44 FILE_READ_ONLY_VOLUME = 0x00080000 45 FILE_SEQUENTIAL_WRITE_ONCE = 0x00100000 46 FILE_SUPPORTS_ENCRYPTION = 0x00020000 47 FILE_SUPPORTS_EXTENDED_ATTRIBUTES = 0x00800000 48 FILE_SUPPORTS_HARD_LINKS = 0x00400000 49 FILE_SUPPORTS_OBJECT_IDS = 0x00010000 50 FILE_SUPPORTS_OPEN_BY_FILE_ID = 0x01000000 51 FILE_SUPPORTS_REPARSE_POINTS = 0x00000080 52 FILE_SUPPORTS_SPARSE_FILES = 0x00000040 53 FILE_SUPPORTS_TRANSACTIONS = 0x00200000 54 FILE_SUPPORTS_USN_JOURNAL = 0x02000000 55 FILE_UNICODE_ON_DISK = 0x00000004 56 FILE_VOLUME_IS_COMPRESSED = 0x00008000 57 FILE_VOLUME_QUOTAS = 0x00000020 58 59 // Return values of SleepEx and other APC functions 60 STATUS_USER_APC = 0x000000C0 61 WAIT_IO_COMPLETION = STATUS_USER_APC 62) 63 64// StringToUTF16 is deprecated. Use UTF16FromString instead. 65// If s contains a NUL byte this function panics instead of 66// returning an error. 67func StringToUTF16(s string) []uint16 { 68 a, err := UTF16FromString(s) 69 if err != nil { 70 panic("windows: string with NUL passed to StringToUTF16") 71 } 72 return a 73} 74 75// UTF16FromString returns the UTF-16 encoding of the UTF-8 string 76// s, with a terminating NUL added. If s contains a NUL byte at any 77// location, it returns (nil, syscall.EINVAL). 78func UTF16FromString(s string) ([]uint16, error) { 79 for i := 0; i < len(s); i++ { 80 if s[i] == 0 { 81 return nil, syscall.EINVAL 82 } 83 } 84 return utf16.Encode([]rune(s + "\x00")), nil 85} 86 87// UTF16ToString returns the UTF-8 encoding of the UTF-16 sequence s, 88// with a terminating NUL removed. 89func UTF16ToString(s []uint16) string { 90 for i, v := range s { 91 if v == 0 { 92 s = s[0:i] 93 break 94 } 95 } 96 return string(utf16.Decode(s)) 97} 98 99// StringToUTF16Ptr is deprecated. Use UTF16PtrFromString instead. 100// If s contains a NUL byte this function panics instead of 101// returning an error. 102func StringToUTF16Ptr(s string) *uint16 { return &StringToUTF16(s)[0] } 103 104// UTF16PtrFromString returns pointer to the UTF-16 encoding of 105// the UTF-8 string s, with a terminating NUL added. If s 106// contains a NUL byte at any location, it returns (nil, syscall.EINVAL). 107func UTF16PtrFromString(s string) (*uint16, error) { 108 a, err := UTF16FromString(s) 109 if err != nil { 110 return nil, err 111 } 112 return &a[0], nil 113} 114 115func Getpagesize() int { return 4096 } 116 117// NewCallback converts a Go function to a function pointer conforming to the stdcall calling convention. 118// This is useful when interoperating with Windows code requiring callbacks. 119// 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. 120func NewCallback(fn interface{}) uintptr { 121 return syscall.NewCallback(fn) 122} 123 124// NewCallbackCDecl converts a Go function to a function pointer conforming to the cdecl calling convention. 125// This is useful when interoperating with Windows code requiring callbacks. 126// 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. 127func NewCallbackCDecl(fn interface{}) uintptr { 128 return syscall.NewCallbackCDecl(fn) 129} 130 131// windows api calls 132 133//sys GetLastError() (lasterr error) 134//sys LoadLibrary(libname string) (handle Handle, err error) = LoadLibraryW 135//sys LoadLibraryEx(libname string, zero Handle, flags uintptr) (handle Handle, err error) = LoadLibraryExW 136//sys FreeLibrary(handle Handle) (err error) 137//sys GetProcAddress(module Handle, procname string) (proc uintptr, err error) 138//sys GetVersion() (ver uint32, err error) 139//sys FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW 140//sys ExitProcess(exitcode uint32) 141//sys IsWow64Process(handle Handle, isWow64 *bool) (err error) = IsWow64Process 142//sys CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile Handle) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW 143//sys ReadFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) 144//sys WriteFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) 145//sys GetOverlappedResult(handle Handle, overlapped *Overlapped, done *uint32, wait bool) (err error) 146//sys SetFilePointer(handle Handle, lowoffset int32, highoffsetptr *int32, whence uint32) (newlowoffset uint32, err error) [failretval==0xffffffff] 147//sys CloseHandle(handle Handle) (err error) 148//sys GetStdHandle(stdhandle uint32) (handle Handle, err error) [failretval==InvalidHandle] 149//sys SetStdHandle(stdhandle uint32, handle Handle) (err error) 150//sys findFirstFile1(name *uint16, data *win32finddata1) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstFileW 151//sys findNextFile1(handle Handle, data *win32finddata1) (err error) = FindNextFileW 152//sys FindClose(handle Handle) (err error) 153//sys GetFileInformationByHandle(handle Handle, data *ByHandleFileInformation) (err error) 154//sys GetFileInformationByHandleEx(handle Handle, class uint32, outBuffer *byte, outBufferLen uint32) (err error) 155//sys GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, err error) = GetCurrentDirectoryW 156//sys SetCurrentDirectory(path *uint16) (err error) = SetCurrentDirectoryW 157//sys CreateDirectory(path *uint16, sa *SecurityAttributes) (err error) = CreateDirectoryW 158//sys RemoveDirectory(path *uint16) (err error) = RemoveDirectoryW 159//sys DeleteFile(path *uint16) (err error) = DeleteFileW 160//sys MoveFile(from *uint16, to *uint16) (err error) = MoveFileW 161//sys MoveFileEx(from *uint16, to *uint16, flags uint32) (err error) = MoveFileExW 162//sys GetComputerName(buf *uint16, n *uint32) (err error) = GetComputerNameW 163//sys GetComputerNameEx(nametype uint32, buf *uint16, n *uint32) (err error) = GetComputerNameExW 164//sys SetEndOfFile(handle Handle) (err error) 165//sys GetSystemTimeAsFileTime(time *Filetime) 166//sys GetSystemTimePreciseAsFileTime(time *Filetime) 167//sys GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff] 168//sys CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uint32, threadcnt uint32) (handle Handle, err error) 169//sys GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uint32, overlapped **Overlapped, timeout uint32) (err error) 170//sys PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uint32, overlapped *Overlapped) (err error) 171//sys CancelIo(s Handle) (err error) 172//sys CancelIoEx(s Handle, o *Overlapped) (err error) 173//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 174//sys OpenProcess(da uint32, inheritHandle bool, pid uint32) (handle Handle, err error) 175//sys ShellExecute(hwnd Handle, verb *uint16, file *uint16, args *uint16, cwd *uint16, showCmd int32) (err error) = shell32.ShellExecuteW 176//sys TerminateProcess(handle Handle, exitcode uint32) (err error) 177//sys GetExitCodeProcess(handle Handle, exitcode *uint32) (err error) 178//sys GetStartupInfo(startupInfo *StartupInfo) (err error) = GetStartupInfoW 179//sys GetCurrentProcess() (pseudoHandle Handle, err error) 180//sys GetCurrentThread() (pseudoHandle Handle, err error) 181//sys GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error) 182//sys DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error) 183//sys WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] 184//sys waitForMultipleObjects(count uint32, handles uintptr, waitAll bool, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] = WaitForMultipleObjects 185//sys GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW 186//sys CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error) 187//sys GetFileType(filehandle Handle) (n uint32, err error) 188//sys CryptAcquireContext(provhandle *Handle, container *uint16, provider *uint16, provtype uint32, flags uint32) (err error) = advapi32.CryptAcquireContextW 189//sys CryptReleaseContext(provhandle Handle, flags uint32) (err error) = advapi32.CryptReleaseContext 190//sys CryptGenRandom(provhandle Handle, buflen uint32, buf *byte) (err error) = advapi32.CryptGenRandom 191//sys GetEnvironmentStrings() (envs *uint16, err error) [failretval==nil] = kernel32.GetEnvironmentStringsW 192//sys FreeEnvironmentStrings(envs *uint16) (err error) = kernel32.FreeEnvironmentStringsW 193//sys GetEnvironmentVariable(name *uint16, buffer *uint16, size uint32) (n uint32, err error) = kernel32.GetEnvironmentVariableW 194//sys SetEnvironmentVariable(name *uint16, value *uint16) (err error) = kernel32.SetEnvironmentVariableW 195//sys CreateEnvironmentBlock(block **uint16, token Token, inheritExisting bool) (err error) = userenv.CreateEnvironmentBlock 196//sys DestroyEnvironmentBlock(block *uint16) (err error) = userenv.DestroyEnvironmentBlock 197//sys SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error) 198//sys GetFileAttributes(name *uint16) (attrs uint32, err error) [failretval==INVALID_FILE_ATTRIBUTES] = kernel32.GetFileAttributesW 199//sys SetFileAttributes(name *uint16, attrs uint32) (err error) = kernel32.SetFileAttributesW 200//sys GetFileAttributesEx(name *uint16, level uint32, info *byte) (err error) = kernel32.GetFileAttributesExW 201//sys GetCommandLine() (cmd *uint16) = kernel32.GetCommandLineW 202//sys CommandLineToArgv(cmd *uint16, argc *int32) (argv *[8192]*[8192]uint16, err error) [failretval==nil] = shell32.CommandLineToArgvW 203//sys LocalFree(hmem Handle) (handle Handle, err error) [failretval!=0] 204//sys SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error) 205//sys FlushFileBuffers(handle Handle) (err error) 206//sys GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, err error) = kernel32.GetFullPathNameW 207//sys GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err error) = kernel32.GetLongPathNameW 208//sys GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW 209//sys CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) = kernel32.CreateFileMappingW 210//sys MapViewOfFile(handle Handle, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, err error) 211//sys UnmapViewOfFile(addr uintptr) (err error) 212//sys FlushViewOfFile(addr uintptr, length uintptr) (err error) 213//sys VirtualLock(addr uintptr, length uintptr) (err error) 214//sys VirtualUnlock(addr uintptr, length uintptr) (err error) 215//sys VirtualAlloc(address uintptr, size uintptr, alloctype uint32, protect uint32) (value uintptr, err error) = kernel32.VirtualAlloc 216//sys VirtualFree(address uintptr, size uintptr, freetype uint32) (err error) = kernel32.VirtualFree 217//sys VirtualProtect(address uintptr, size uintptr, newprotect uint32, oldprotect *uint32) (err error) = kernel32.VirtualProtect 218//sys TransmitFile(s Handle, handle Handle, bytesToWrite uint32, bytsPerSend uint32, overlapped *Overlapped, transmitFileBuf *TransmitFileBuffers, flags uint32) (err error) = mswsock.TransmitFile 219//sys ReadDirectoryChanges(handle Handle, buf *byte, buflen uint32, watchSubTree bool, mask uint32, retlen *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) = kernel32.ReadDirectoryChangesW 220//sys CertOpenSystemStore(hprov Handle, name *uint16) (store Handle, err error) = crypt32.CertOpenSystemStoreW 221//sys CertOpenStore(storeProvider uintptr, msgAndCertEncodingType uint32, cryptProv uintptr, flags uint32, para uintptr) (handle Handle, err error) [failretval==InvalidHandle] = crypt32.CertOpenStore 222//sys CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) [failretval==nil] = crypt32.CertEnumCertificatesInStore 223//sys CertAddCertificateContextToStore(store Handle, certContext *CertContext, addDisposition uint32, storeContext **CertContext) (err error) = crypt32.CertAddCertificateContextToStore 224//sys CertCloseStore(store Handle, flags uint32) (err error) = crypt32.CertCloseStore 225//sys CertGetCertificateChain(engine Handle, leaf *CertContext, time *Filetime, additionalStore Handle, para *CertChainPara, flags uint32, reserved uintptr, chainCtx **CertChainContext) (err error) = crypt32.CertGetCertificateChain 226//sys CertFreeCertificateChain(ctx *CertChainContext) = crypt32.CertFreeCertificateChain 227//sys CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, encodedLen uint32) (context *CertContext, err error) [failretval==nil] = crypt32.CertCreateCertificateContext 228//sys CertFreeCertificateContext(ctx *CertContext) (err error) = crypt32.CertFreeCertificateContext 229//sys CertVerifyCertificateChainPolicy(policyOID uintptr, chain *CertChainContext, para *CertChainPolicyPara, status *CertChainPolicyStatus) (err error) = crypt32.CertVerifyCertificateChainPolicy 230//sys RegOpenKeyEx(key Handle, subkey *uint16, options uint32, desiredAccess uint32, result *Handle) (regerrno error) = advapi32.RegOpenKeyExW 231//sys RegCloseKey(key Handle) (regerrno error) = advapi32.RegCloseKey 232//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 233//sys RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW 234//sys RegQueryValueEx(key Handle, name *uint16, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegQueryValueExW 235//sys getCurrentProcessId() (pid uint32) = kernel32.GetCurrentProcessId 236//sys GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode 237//sys SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode 238//sys GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo 239//sys WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW 240//sys ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW 241//sys CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot 242//sys Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32FirstW 243//sys Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32NextW 244//sys DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBufferSize uint32, outBuffer *byte, outBufferSize uint32, bytesReturned *uint32, overlapped *Overlapped) (err error) 245// This function returns 1 byte BOOLEAN rather than the 4 byte BOOL. 246//sys CreateSymbolicLink(symlinkfilename *uint16, targetfilename *uint16, flags uint32) (err error) [failretval&0xff==0] = CreateSymbolicLinkW 247//sys CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr) (err error) [failretval&0xff==0] = CreateHardLinkW 248//sys GetCurrentThreadId() (id uint32) 249//sys CreateEvent(eventAttrs *SecurityAttributes, manualReset uint32, initialState uint32, name *uint16) (handle Handle, err error) = kernel32.CreateEventW 250//sys CreateEventEx(eventAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) = kernel32.CreateEventExW 251//sys OpenEvent(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenEventW 252//sys SetEvent(event Handle) (err error) = kernel32.SetEvent 253//sys ResetEvent(event Handle) (err error) = kernel32.ResetEvent 254//sys PulseEvent(event Handle) (err error) = kernel32.PulseEvent 255//sys SleepEx(milliseconds uint32, alertable bool) (ret uint32) = kernel32.SleepEx 256//sys CreateJobObject(jobAttr *SecurityAttributes, name *uint16) (handle Handle, err error) = kernel32.CreateJobObjectW 257//sys AssignProcessToJobObject(job Handle, process Handle) (err error) = kernel32.AssignProcessToJobObject 258//sys TerminateJobObject(job Handle, exitCode uint32) (err error) = kernel32.TerminateJobObject 259//sys SetErrorMode(mode uint32) (ret uint32) = kernel32.SetErrorMode 260//sys ResumeThread(thread Handle) (ret uint32, err error) [failretval==0xffffffff] = kernel32.ResumeThread 261//sys SetPriorityClass(process Handle, priorityClass uint32) (err error) = kernel32.SetPriorityClass 262//sys GetPriorityClass(process Handle) (ret uint32, err error) = kernel32.GetPriorityClass 263//sys SetInformationJobObject(job Handle, JobObjectInformationClass uint32, JobObjectInformation uintptr, JobObjectInformationLength uint32) (ret int, err error) 264//sys GenerateConsoleCtrlEvent(ctrlEvent uint32, processGroupID uint32) (err error) 265 266// Volume Management Functions 267//sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW 268//sys DeleteVolumeMountPoint(volumeMountPoint *uint16) (err error) = DeleteVolumeMountPointW 269//sys FindFirstVolume(volumeName *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeW 270//sys FindFirstVolumeMountPoint(rootPathName *uint16, volumeMountPoint *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeMountPointW 271//sys FindNextVolume(findVolume Handle, volumeName *uint16, bufferLength uint32) (err error) = FindNextVolumeW 272//sys FindNextVolumeMountPoint(findVolumeMountPoint Handle, volumeMountPoint *uint16, bufferLength uint32) (err error) = FindNextVolumeMountPointW 273//sys FindVolumeClose(findVolume Handle) (err error) 274//sys FindVolumeMountPointClose(findVolumeMountPoint Handle) (err error) 275//sys GetDriveType(rootPathName *uint16) (driveType uint32) = GetDriveTypeW 276//sys GetLogicalDrives() (drivesBitMask uint32, err error) [failretval==0] 277//sys GetLogicalDriveStrings(bufferLength uint32, buffer *uint16) (n uint32, err error) [failretval==0] = GetLogicalDriveStringsW 278//sys GetVolumeInformation(rootPathName *uint16, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationW 279//sys GetVolumeInformationByHandle(file Handle, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationByHandleW 280//sys GetVolumeNameForVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16, bufferlength uint32) (err error) = GetVolumeNameForVolumeMountPointW 281//sys GetVolumePathName(fileName *uint16, volumePathName *uint16, bufferLength uint32) (err error) = GetVolumePathNameW 282//sys GetVolumePathNamesForVolumeName(volumeName *uint16, volumePathNames *uint16, bufferLength uint32, returnLength *uint32) (err error) = GetVolumePathNamesForVolumeNameW 283//sys QueryDosDevice(deviceName *uint16, targetPath *uint16, max uint32) (n uint32, err error) [failretval==0] = QueryDosDeviceW 284//sys SetVolumeLabel(rootPathName *uint16, volumeName *uint16) (err error) = SetVolumeLabelW 285//sys SetVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16) (err error) = SetVolumeMountPointW 286//sys MessageBox(hwnd Handle, text *uint16, caption *uint16, boxtype uint32) (ret int32, err error) [failretval==0] = user32.MessageBoxW 287 288// syscall interface implementation for other packages 289 290// GetProcAddressByOrdinal retrieves the address of the exported 291// function from module by ordinal. 292func GetProcAddressByOrdinal(module Handle, ordinal uintptr) (proc uintptr, err error) { 293 r0, _, e1 := syscall.Syscall(procGetProcAddress.Addr(), 2, uintptr(module), ordinal, 0) 294 proc = uintptr(r0) 295 if proc == 0 { 296 if e1 != 0 { 297 err = errnoErr(e1) 298 } else { 299 err = syscall.EINVAL 300 } 301 } 302 return 303} 304 305func Exit(code int) { ExitProcess(uint32(code)) } 306 307func makeInheritSa() *SecurityAttributes { 308 var sa SecurityAttributes 309 sa.Length = uint32(unsafe.Sizeof(sa)) 310 sa.InheritHandle = 1 311 return &sa 312} 313 314func Open(path string, mode int, perm uint32) (fd Handle, err error) { 315 if len(path) == 0 { 316 return InvalidHandle, ERROR_FILE_NOT_FOUND 317 } 318 pathp, err := UTF16PtrFromString(path) 319 if err != nil { 320 return InvalidHandle, err 321 } 322 var access uint32 323 switch mode & (O_RDONLY | O_WRONLY | O_RDWR) { 324 case O_RDONLY: 325 access = GENERIC_READ 326 case O_WRONLY: 327 access = GENERIC_WRITE 328 case O_RDWR: 329 access = GENERIC_READ | GENERIC_WRITE 330 } 331 if mode&O_CREAT != 0 { 332 access |= GENERIC_WRITE 333 } 334 if mode&O_APPEND != 0 { 335 access &^= GENERIC_WRITE 336 access |= FILE_APPEND_DATA 337 } 338 sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE) 339 var sa *SecurityAttributes 340 if mode&O_CLOEXEC == 0 { 341 sa = makeInheritSa() 342 } 343 var createmode uint32 344 switch { 345 case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL): 346 createmode = CREATE_NEW 347 case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC): 348 createmode = CREATE_ALWAYS 349 case mode&O_CREAT == O_CREAT: 350 createmode = OPEN_ALWAYS 351 case mode&O_TRUNC == O_TRUNC: 352 createmode = TRUNCATE_EXISTING 353 default: 354 createmode = OPEN_EXISTING 355 } 356 h, e := CreateFile(pathp, access, sharemode, sa, createmode, FILE_ATTRIBUTE_NORMAL, 0) 357 return h, e 358} 359 360func Read(fd Handle, p []byte) (n int, err error) { 361 var done uint32 362 e := ReadFile(fd, p, &done, nil) 363 if e != nil { 364 if e == ERROR_BROKEN_PIPE { 365 // NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin 366 return 0, nil 367 } 368 return 0, e 369 } 370 if raceenabled { 371 if done > 0 { 372 raceWriteRange(unsafe.Pointer(&p[0]), int(done)) 373 } 374 raceAcquire(unsafe.Pointer(&ioSync)) 375 } 376 return int(done), nil 377} 378 379func Write(fd Handle, p []byte) (n int, err error) { 380 if raceenabled { 381 raceReleaseMerge(unsafe.Pointer(&ioSync)) 382 } 383 var done uint32 384 e := WriteFile(fd, p, &done, nil) 385 if e != nil { 386 return 0, e 387 } 388 if raceenabled && done > 0 { 389 raceReadRange(unsafe.Pointer(&p[0]), int(done)) 390 } 391 return int(done), nil 392} 393 394var ioSync int64 395 396func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) { 397 var w uint32 398 switch whence { 399 case 0: 400 w = FILE_BEGIN 401 case 1: 402 w = FILE_CURRENT 403 case 2: 404 w = FILE_END 405 } 406 hi := int32(offset >> 32) 407 lo := int32(offset) 408 // use GetFileType to check pipe, pipe can't do seek 409 ft, _ := GetFileType(fd) 410 if ft == FILE_TYPE_PIPE { 411 return 0, syscall.EPIPE 412 } 413 rlo, e := SetFilePointer(fd, lo, &hi, w) 414 if e != nil { 415 return 0, e 416 } 417 return int64(hi)<<32 + int64(rlo), nil 418} 419 420func Close(fd Handle) (err error) { 421 return CloseHandle(fd) 422} 423 424var ( 425 Stdin = getStdHandle(STD_INPUT_HANDLE) 426 Stdout = getStdHandle(STD_OUTPUT_HANDLE) 427 Stderr = getStdHandle(STD_ERROR_HANDLE) 428) 429 430func getStdHandle(stdhandle uint32) (fd Handle) { 431 r, _ := GetStdHandle(stdhandle) 432 CloseOnExec(r) 433 return r 434} 435 436const ImplementsGetwd = true 437 438func Getwd() (wd string, err error) { 439 b := make([]uint16, 300) 440 n, e := GetCurrentDirectory(uint32(len(b)), &b[0]) 441 if e != nil { 442 return "", e 443 } 444 return string(utf16.Decode(b[0:n])), nil 445} 446 447func Chdir(path string) (err error) { 448 pathp, err := UTF16PtrFromString(path) 449 if err != nil { 450 return err 451 } 452 return SetCurrentDirectory(pathp) 453} 454 455func Mkdir(path string, mode uint32) (err error) { 456 pathp, err := UTF16PtrFromString(path) 457 if err != nil { 458 return err 459 } 460 return CreateDirectory(pathp, nil) 461} 462 463func Rmdir(path string) (err error) { 464 pathp, err := UTF16PtrFromString(path) 465 if err != nil { 466 return err 467 } 468 return RemoveDirectory(pathp) 469} 470 471func Unlink(path string) (err error) { 472 pathp, err := UTF16PtrFromString(path) 473 if err != nil { 474 return err 475 } 476 return DeleteFile(pathp) 477} 478 479func Rename(oldpath, newpath string) (err error) { 480 from, err := UTF16PtrFromString(oldpath) 481 if err != nil { 482 return err 483 } 484 to, err := UTF16PtrFromString(newpath) 485 if err != nil { 486 return err 487 } 488 return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING) 489} 490 491func ComputerName() (name string, err error) { 492 var n uint32 = MAX_COMPUTERNAME_LENGTH + 1 493 b := make([]uint16, n) 494 e := GetComputerName(&b[0], &n) 495 if e != nil { 496 return "", e 497 } 498 return string(utf16.Decode(b[0:n])), nil 499} 500 501func Ftruncate(fd Handle, length int64) (err error) { 502 curoffset, e := Seek(fd, 0, 1) 503 if e != nil { 504 return e 505 } 506 defer Seek(fd, curoffset, 0) 507 _, e = Seek(fd, length, 0) 508 if e != nil { 509 return e 510 } 511 e = SetEndOfFile(fd) 512 if e != nil { 513 return e 514 } 515 return nil 516} 517 518func Gettimeofday(tv *Timeval) (err error) { 519 var ft Filetime 520 GetSystemTimeAsFileTime(&ft) 521 *tv = NsecToTimeval(ft.Nanoseconds()) 522 return nil 523} 524 525func Pipe(p []Handle) (err error) { 526 if len(p) != 2 { 527 return syscall.EINVAL 528 } 529 var r, w Handle 530 e := CreatePipe(&r, &w, makeInheritSa(), 0) 531 if e != nil { 532 return e 533 } 534 p[0] = r 535 p[1] = w 536 return nil 537} 538 539func Utimes(path string, tv []Timeval) (err error) { 540 if len(tv) != 2 { 541 return syscall.EINVAL 542 } 543 pathp, e := UTF16PtrFromString(path) 544 if e != nil { 545 return e 546 } 547 h, e := CreateFile(pathp, 548 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, 549 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) 550 if e != nil { 551 return e 552 } 553 defer Close(h) 554 a := NsecToFiletime(tv[0].Nanoseconds()) 555 w := NsecToFiletime(tv[1].Nanoseconds()) 556 return SetFileTime(h, nil, &a, &w) 557} 558 559func UtimesNano(path string, ts []Timespec) (err error) { 560 if len(ts) != 2 { 561 return syscall.EINVAL 562 } 563 pathp, e := UTF16PtrFromString(path) 564 if e != nil { 565 return e 566 } 567 h, e := CreateFile(pathp, 568 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, 569 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) 570 if e != nil { 571 return e 572 } 573 defer Close(h) 574 a := NsecToFiletime(TimespecToNsec(ts[0])) 575 w := NsecToFiletime(TimespecToNsec(ts[1])) 576 return SetFileTime(h, nil, &a, &w) 577} 578 579func Fsync(fd Handle) (err error) { 580 return FlushFileBuffers(fd) 581} 582 583func Chmod(path string, mode uint32) (err error) { 584 p, e := UTF16PtrFromString(path) 585 if e != nil { 586 return e 587 } 588 attrs, e := GetFileAttributes(p) 589 if e != nil { 590 return e 591 } 592 if mode&S_IWRITE != 0 { 593 attrs &^= FILE_ATTRIBUTE_READONLY 594 } else { 595 attrs |= FILE_ATTRIBUTE_READONLY 596 } 597 return SetFileAttributes(p, attrs) 598} 599 600func LoadGetSystemTimePreciseAsFileTime() error { 601 return procGetSystemTimePreciseAsFileTime.Find() 602} 603 604func LoadCancelIoEx() error { 605 return procCancelIoEx.Find() 606} 607 608func LoadSetFileCompletionNotificationModes() error { 609 return procSetFileCompletionNotificationModes.Find() 610} 611 612func WaitForMultipleObjects(handles []Handle, waitAll bool, waitMilliseconds uint32) (event uint32, err error) { 613 // Every other win32 array API takes arguments as "pointer, count", except for this function. So we 614 // can't declare it as a usual [] type, because mksyscall will use the opposite order. We therefore 615 // trivially stub this ourselves. 616 617 var handlePtr *Handle 618 if len(handles) > 0 { 619 handlePtr = &handles[0] 620 } 621 return waitForMultipleObjects(uint32(len(handles)), uintptr(unsafe.Pointer(handlePtr)), waitAll, waitMilliseconds) 622} 623 624// net api calls 625 626const socket_error = uintptr(^uint32(0)) 627 628//sys WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup 629//sys WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup 630//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 631//sys socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket 632//sys Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt 633//sys Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt 634//sys bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind 635//sys connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect 636//sys getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname 637//sys getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername 638//sys listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen 639//sys shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown 640//sys Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket 641//sys AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx 642//sys GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs 643//sys WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv 644//sys WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend 645//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 646//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 647//sys GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname 648//sys GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname 649//sys Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs 650//sys GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname 651//sys DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W 652//sys DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree 653//sys DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W 654//sys GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW 655//sys FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW 656//sys GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry 657//sys GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo 658//sys SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes 659//sys WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW 660//sys GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses 661//sys GetACP() (acp uint32) = kernel32.GetACP 662//sys MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar 663 664// For testing: clients can set this flag to force 665// creation of IPv6 sockets to return EAFNOSUPPORT. 666var SocketDisableIPv6 bool 667 668type RawSockaddrInet4 struct { 669 Family uint16 670 Port uint16 671 Addr [4]byte /* in_addr */ 672 Zero [8]uint8 673} 674 675type RawSockaddrInet6 struct { 676 Family uint16 677 Port uint16 678 Flowinfo uint32 679 Addr [16]byte /* in6_addr */ 680 Scope_id uint32 681} 682 683type RawSockaddr struct { 684 Family uint16 685 Data [14]int8 686} 687 688type RawSockaddrAny struct { 689 Addr RawSockaddr 690 Pad [100]int8 691} 692 693type Sockaddr interface { 694 sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs 695} 696 697type SockaddrInet4 struct { 698 Port int 699 Addr [4]byte 700 raw RawSockaddrInet4 701} 702 703func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) { 704 if sa.Port < 0 || sa.Port > 0xFFFF { 705 return nil, 0, syscall.EINVAL 706 } 707 sa.raw.Family = AF_INET 708 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 709 p[0] = byte(sa.Port >> 8) 710 p[1] = byte(sa.Port) 711 for i := 0; i < len(sa.Addr); i++ { 712 sa.raw.Addr[i] = sa.Addr[i] 713 } 714 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil 715} 716 717type SockaddrInet6 struct { 718 Port int 719 ZoneId uint32 720 Addr [16]byte 721 raw RawSockaddrInet6 722} 723 724func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) { 725 if sa.Port < 0 || sa.Port > 0xFFFF { 726 return nil, 0, syscall.EINVAL 727 } 728 sa.raw.Family = AF_INET6 729 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 730 p[0] = byte(sa.Port >> 8) 731 p[1] = byte(sa.Port) 732 sa.raw.Scope_id = sa.ZoneId 733 for i := 0; i < len(sa.Addr); i++ { 734 sa.raw.Addr[i] = sa.Addr[i] 735 } 736 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil 737} 738 739type RawSockaddrUnix struct { 740 Family uint16 741 Path [UNIX_PATH_MAX]int8 742} 743 744type SockaddrUnix struct { 745 Name string 746 raw RawSockaddrUnix 747} 748 749func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) { 750 name := sa.Name 751 n := len(name) 752 if n > len(sa.raw.Path) { 753 return nil, 0, syscall.EINVAL 754 } 755 if n == len(sa.raw.Path) && name[0] != '@' { 756 return nil, 0, syscall.EINVAL 757 } 758 sa.raw.Family = AF_UNIX 759 for i := 0; i < n; i++ { 760 sa.raw.Path[i] = int8(name[i]) 761 } 762 // length is family (uint16), name, NUL. 763 sl := int32(2) 764 if n > 0 { 765 sl += int32(n) + 1 766 } 767 if sa.raw.Path[0] == '@' { 768 sa.raw.Path[0] = 0 769 // Don't count trailing NUL for abstract address. 770 sl-- 771 } 772 773 return unsafe.Pointer(&sa.raw), sl, nil 774} 775 776func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) { 777 switch rsa.Addr.Family { 778 case AF_UNIX: 779 pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) 780 sa := new(SockaddrUnix) 781 if pp.Path[0] == 0 { 782 // "Abstract" Unix domain socket. 783 // Rewrite leading NUL as @ for textual display. 784 // (This is the standard convention.) 785 // Not friendly to overwrite in place, 786 // but the callers below don't care. 787 pp.Path[0] = '@' 788 } 789 790 // Assume path ends at NUL. 791 // This is not technically the Linux semantics for 792 // abstract Unix domain sockets--they are supposed 793 // to be uninterpreted fixed-size binary blobs--but 794 // everyone uses this convention. 795 n := 0 796 for n < len(pp.Path) && pp.Path[n] != 0 { 797 n++ 798 } 799 bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n] 800 sa.Name = string(bytes) 801 return sa, nil 802 803 case AF_INET: 804 pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) 805 sa := new(SockaddrInet4) 806 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 807 sa.Port = int(p[0])<<8 + int(p[1]) 808 for i := 0; i < len(sa.Addr); i++ { 809 sa.Addr[i] = pp.Addr[i] 810 } 811 return sa, nil 812 813 case AF_INET6: 814 pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) 815 sa := new(SockaddrInet6) 816 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 817 sa.Port = int(p[0])<<8 + int(p[1]) 818 sa.ZoneId = pp.Scope_id 819 for i := 0; i < len(sa.Addr); i++ { 820 sa.Addr[i] = pp.Addr[i] 821 } 822 return sa, nil 823 } 824 return nil, syscall.EAFNOSUPPORT 825} 826 827func Socket(domain, typ, proto int) (fd Handle, err error) { 828 if domain == AF_INET6 && SocketDisableIPv6 { 829 return InvalidHandle, syscall.EAFNOSUPPORT 830 } 831 return socket(int32(domain), int32(typ), int32(proto)) 832} 833 834func SetsockoptInt(fd Handle, level, opt int, value int) (err error) { 835 v := int32(value) 836 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v))) 837} 838 839func Bind(fd Handle, sa Sockaddr) (err error) { 840 ptr, n, err := sa.sockaddr() 841 if err != nil { 842 return err 843 } 844 return bind(fd, ptr, n) 845} 846 847func Connect(fd Handle, sa Sockaddr) (err error) { 848 ptr, n, err := sa.sockaddr() 849 if err != nil { 850 return err 851 } 852 return connect(fd, ptr, n) 853} 854 855func Getsockname(fd Handle) (sa Sockaddr, err error) { 856 var rsa RawSockaddrAny 857 l := int32(unsafe.Sizeof(rsa)) 858 if err = getsockname(fd, &rsa, &l); err != nil { 859 return 860 } 861 return rsa.Sockaddr() 862} 863 864func Getpeername(fd Handle) (sa Sockaddr, err error) { 865 var rsa RawSockaddrAny 866 l := int32(unsafe.Sizeof(rsa)) 867 if err = getpeername(fd, &rsa, &l); err != nil { 868 return 869 } 870 return rsa.Sockaddr() 871} 872 873func Listen(s Handle, n int) (err error) { 874 return listen(s, int32(n)) 875} 876 877func Shutdown(fd Handle, how int) (err error) { 878 return shutdown(fd, int32(how)) 879} 880 881func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) { 882 rsa, l, err := to.sockaddr() 883 if err != nil { 884 return err 885 } 886 return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine) 887} 888 889func LoadGetAddrInfo() error { 890 return procGetAddrInfoW.Find() 891} 892 893var connectExFunc struct { 894 once sync.Once 895 addr uintptr 896 err error 897} 898 899func LoadConnectEx() error { 900 connectExFunc.once.Do(func() { 901 var s Handle 902 s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) 903 if connectExFunc.err != nil { 904 return 905 } 906 defer CloseHandle(s) 907 var n uint32 908 connectExFunc.err = WSAIoctl(s, 909 SIO_GET_EXTENSION_FUNCTION_POINTER, 910 (*byte)(unsafe.Pointer(&WSAID_CONNECTEX)), 911 uint32(unsafe.Sizeof(WSAID_CONNECTEX)), 912 (*byte)(unsafe.Pointer(&connectExFunc.addr)), 913 uint32(unsafe.Sizeof(connectExFunc.addr)), 914 &n, nil, 0) 915 }) 916 return connectExFunc.err 917} 918 919func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) { 920 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) 921 if r1 == 0 { 922 if e1 != 0 { 923 err = error(e1) 924 } else { 925 err = syscall.EINVAL 926 } 927 } 928 return 929} 930 931func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error { 932 err := LoadConnectEx() 933 if err != nil { 934 return errorspkg.New("failed to find ConnectEx: " + err.Error()) 935 } 936 ptr, n, err := sa.sockaddr() 937 if err != nil { 938 return err 939 } 940 return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped) 941} 942 943var sendRecvMsgFunc struct { 944 once sync.Once 945 sendAddr uintptr 946 recvAddr uintptr 947 err error 948} 949 950func loadWSASendRecvMsg() error { 951 sendRecvMsgFunc.once.Do(func() { 952 var s Handle 953 s, sendRecvMsgFunc.err = Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) 954 if sendRecvMsgFunc.err != nil { 955 return 956 } 957 defer CloseHandle(s) 958 var n uint32 959 sendRecvMsgFunc.err = WSAIoctl(s, 960 SIO_GET_EXTENSION_FUNCTION_POINTER, 961 (*byte)(unsafe.Pointer(&WSAID_WSARECVMSG)), 962 uint32(unsafe.Sizeof(WSAID_WSARECVMSG)), 963 (*byte)(unsafe.Pointer(&sendRecvMsgFunc.recvAddr)), 964 uint32(unsafe.Sizeof(sendRecvMsgFunc.recvAddr)), 965 &n, nil, 0) 966 if sendRecvMsgFunc.err != nil { 967 return 968 } 969 sendRecvMsgFunc.err = WSAIoctl(s, 970 SIO_GET_EXTENSION_FUNCTION_POINTER, 971 (*byte)(unsafe.Pointer(&WSAID_WSASENDMSG)), 972 uint32(unsafe.Sizeof(WSAID_WSASENDMSG)), 973 (*byte)(unsafe.Pointer(&sendRecvMsgFunc.sendAddr)), 974 uint32(unsafe.Sizeof(sendRecvMsgFunc.sendAddr)), 975 &n, nil, 0) 976 }) 977 return sendRecvMsgFunc.err 978} 979 980func WSASendMsg(fd Handle, msg *WSAMsg, flags uint32, bytesSent *uint32, overlapped *Overlapped, croutine *byte) error { 981 err := loadWSASendRecvMsg() 982 if err != nil { 983 return err 984 } 985 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))) 986 if r1 == socket_error { 987 if e1 != 0 { 988 err = errnoErr(e1) 989 } else { 990 err = syscall.EINVAL 991 } 992 } 993 return err 994} 995 996func WSARecvMsg(fd Handle, msg *WSAMsg, bytesReceived *uint32, overlapped *Overlapped, croutine *byte) error { 997 err := loadWSASendRecvMsg() 998 if err != nil { 999 return err 1000 } 1001 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) 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 1012// Invented structures to support what package os expects. 1013type Rusage struct { 1014 CreationTime Filetime 1015 ExitTime Filetime 1016 KernelTime Filetime 1017 UserTime Filetime 1018} 1019 1020type WaitStatus struct { 1021 ExitCode uint32 1022} 1023 1024func (w WaitStatus) Exited() bool { return true } 1025 1026func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) } 1027 1028func (w WaitStatus) Signal() Signal { return -1 } 1029 1030func (w WaitStatus) CoreDump() bool { return false } 1031 1032func (w WaitStatus) Stopped() bool { return false } 1033 1034func (w WaitStatus) Continued() bool { return false } 1035 1036func (w WaitStatus) StopSignal() Signal { return -1 } 1037 1038func (w WaitStatus) Signaled() bool { return false } 1039 1040func (w WaitStatus) TrapCause() int { return -1 } 1041 1042// Timespec is an invented structure on Windows, but here for 1043// consistency with the corresponding package for other operating systems. 1044type Timespec struct { 1045 Sec int64 1046 Nsec int64 1047} 1048 1049func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } 1050 1051func NsecToTimespec(nsec int64) (ts Timespec) { 1052 ts.Sec = nsec / 1e9 1053 ts.Nsec = nsec % 1e9 1054 return 1055} 1056 1057// TODO(brainman): fix all needed for net 1058 1059func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS } 1060func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) { 1061 return 0, nil, syscall.EWINDOWS 1062} 1063func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) { return syscall.EWINDOWS } 1064func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS } 1065 1066// The Linger struct is wrong but we only noticed after Go 1. 1067// sysLinger is the real system call structure. 1068 1069// BUG(brainman): The definition of Linger is not appropriate for direct use 1070// with Setsockopt and Getsockopt. 1071// Use SetsockoptLinger instead. 1072 1073type Linger struct { 1074 Onoff int32 1075 Linger int32 1076} 1077 1078type sysLinger struct { 1079 Onoff uint16 1080 Linger uint16 1081} 1082 1083type IPMreq struct { 1084 Multiaddr [4]byte /* in_addr */ 1085 Interface [4]byte /* in_addr */ 1086} 1087 1088type IPv6Mreq struct { 1089 Multiaddr [16]byte /* in6_addr */ 1090 Interface uint32 1091} 1092 1093func GetsockoptInt(fd Handle, level, opt int) (int, error) { return -1, syscall.EWINDOWS } 1094 1095func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) { 1096 sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)} 1097 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys))) 1098} 1099 1100func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) { 1101 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4) 1102} 1103func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) { 1104 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq))) 1105} 1106func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) { 1107 return syscall.EWINDOWS 1108} 1109 1110func Getpid() (pid int) { return int(getCurrentProcessId()) } 1111 1112func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) { 1113 // NOTE(rsc): The Win32finddata struct is wrong for the system call: 1114 // the two paths are each one uint16 short. Use the correct struct, 1115 // a win32finddata1, and then copy the results out. 1116 // There is no loss of expressivity here, because the final 1117 // uint16, if it is used, is supposed to be a NUL, and Go doesn't need that. 1118 // For Go 1.1, we might avoid the allocation of win32finddata1 here 1119 // by adding a final Bug [2]uint16 field to the struct and then 1120 // adjusting the fields in the result directly. 1121 var data1 win32finddata1 1122 handle, err = findFirstFile1(name, &data1) 1123 if err == nil { 1124 copyFindData(data, &data1) 1125 } 1126 return 1127} 1128 1129func FindNextFile(handle Handle, data *Win32finddata) (err error) { 1130 var data1 win32finddata1 1131 err = findNextFile1(handle, &data1) 1132 if err == nil { 1133 copyFindData(data, &data1) 1134 } 1135 return 1136} 1137 1138func getProcessEntry(pid int) (*ProcessEntry32, error) { 1139 snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) 1140 if err != nil { 1141 return nil, err 1142 } 1143 defer CloseHandle(snapshot) 1144 var procEntry ProcessEntry32 1145 procEntry.Size = uint32(unsafe.Sizeof(procEntry)) 1146 if err = Process32First(snapshot, &procEntry); err != nil { 1147 return nil, err 1148 } 1149 for { 1150 if procEntry.ProcessID == uint32(pid) { 1151 return &procEntry, nil 1152 } 1153 err = Process32Next(snapshot, &procEntry) 1154 if err != nil { 1155 return nil, err 1156 } 1157 } 1158} 1159 1160func Getppid() (ppid int) { 1161 pe, err := getProcessEntry(Getpid()) 1162 if err != nil { 1163 return -1 1164 } 1165 return int(pe.ParentProcessID) 1166} 1167 1168// TODO(brainman): fix all needed for os 1169func Fchdir(fd Handle) (err error) { return syscall.EWINDOWS } 1170func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS } 1171func Symlink(path, link string) (err error) { return syscall.EWINDOWS } 1172 1173func Fchmod(fd Handle, mode uint32) (err error) { return syscall.EWINDOWS } 1174func Chown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } 1175func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } 1176func Fchown(fd Handle, uid int, gid int) (err error) { return syscall.EWINDOWS } 1177 1178func Getuid() (uid int) { return -1 } 1179func Geteuid() (euid int) { return -1 } 1180func Getgid() (gid int) { return -1 } 1181func Getegid() (egid int) { return -1 } 1182func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS } 1183 1184type Signal int 1185 1186func (s Signal) Signal() {} 1187 1188func (s Signal) String() string { 1189 if 0 <= s && int(s) < len(signals) { 1190 str := signals[s] 1191 if str != "" { 1192 return str 1193 } 1194 } 1195 return "signal " + itoa(int(s)) 1196} 1197 1198func LoadCreateSymbolicLink() error { 1199 return procCreateSymbolicLinkW.Find() 1200} 1201 1202// Readlink returns the destination of the named symbolic link. 1203func Readlink(path string, buf []byte) (n int, err error) { 1204 fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING, 1205 FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0) 1206 if err != nil { 1207 return -1, err 1208 } 1209 defer CloseHandle(fd) 1210 1211 rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE) 1212 var bytesReturned uint32 1213 err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil) 1214 if err != nil { 1215 return -1, err 1216 } 1217 1218 rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0])) 1219 var s string 1220 switch rdb.ReparseTag { 1221 case IO_REPARSE_TAG_SYMLINK: 1222 data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) 1223 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) 1224 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) 1225 case IO_REPARSE_TAG_MOUNT_POINT: 1226 data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) 1227 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) 1228 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) 1229 default: 1230 // the path is not a symlink or junction but another type of reparse 1231 // point 1232 return -1, syscall.ENOENT 1233 } 1234 n = copy(buf, []byte(s)) 1235 1236 return n, nil 1237} 1238