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