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.
5 // Windows system calls.
19 const InvalidHandle = ^Handle(0)
21 // StringToUTF16 is deprecated. Use UTF16FromString instead.
22 // If s contains a NUL byte this function panics instead of
23 // returning an error.
24 func StringToUTF16(s string) []uint16 {
25 a, err := UTF16FromString(s)
27 panic("windows: string with NUL passed to StringToUTF16")
32 // UTF16FromString returns the UTF-16 encoding of the UTF-8 string
33 // s, with a terminating NUL added. If s contains a NUL byte at any
34 // location, it returns (nil, syscall.EINVAL).
35 func UTF16FromString(s string) ([]uint16, error) {
36 for i := 0; i < len(s); i++ {
38 return nil, syscall.EINVAL
41 return utf16.Encode([]rune(s + "\x00")), nil
44 // UTF16ToString returns the UTF-8 encoding of the UTF-16 sequence s,
45 // with a terminating NUL removed.
46 func UTF16ToString(s []uint16) string {
53 return string(utf16.Decode(s))
56 // StringToUTF16Ptr is deprecated. Use UTF16PtrFromString instead.
57 // If s contains a NUL byte this function panics instead of
58 // returning an error.
59 func StringToUTF16Ptr(s string) *uint16 { return &StringToUTF16(s)[0] }
61 // UTF16PtrFromString returns pointer to the UTF-16 encoding of
62 // the UTF-8 string s, with a terminating NUL added. If s
63 // contains a NUL byte at any location, it returns (nil, syscall.EINVAL).
64 func UTF16PtrFromString(s string) (*uint16, error) {
65 a, err := UTF16FromString(s)
72 func Getpagesize() int { return 4096 }
74 // Converts a Go function to a function pointer conforming
75 // to the stdcall or cdecl calling convention. This is useful when
76 // interoperating with Windows code requiring callbacks.
77 // Implemented in runtime/syscall_windows.goc
78 func NewCallback(fn interface{}) uintptr
79 func NewCallbackCDecl(fn interface{}) uintptr
83 //sys GetLastError() (lasterr error)
84 //sys LoadLibrary(libname string) (handle Handle, err error) = LoadLibraryW
85 //sys LoadLibraryEx(libname string, zero Handle, flags uintptr) (handle Handle, err error) = LoadLibraryExW
86 //sys FreeLibrary(handle Handle) (err error)
87 //sys GetProcAddress(module Handle, procname string) (proc uintptr, err error)
88 //sys GetVersion() (ver uint32, err error)
89 //sys FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW
90 //sys ExitProcess(exitcode uint32)
91 //sys CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile int32) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW
92 //sys ReadFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error)
93 //sys WriteFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error)
94 //sys SetFilePointer(handle Handle, lowoffset int32, highoffsetptr *int32, whence uint32) (newlowoffset uint32, err error) [failretval==0xffffffff]
95 //sys CloseHandle(handle Handle) (err error)
96 //sys GetStdHandle(stdhandle uint32) (handle Handle, err error) [failretval==InvalidHandle]
97 //sys SetStdHandle(stdhandle uint32, handle Handle) (err error)
98 //sys findFirstFile1(name *uint16, data *win32finddata1) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstFileW
99 //sys findNextFile1(handle Handle, data *win32finddata1) (err error) = FindNextFileW
100 //sys FindClose(handle Handle) (err error)
101 //sys GetFileInformationByHandle(handle Handle, data *ByHandleFileInformation) (err error)
102 //sys GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, err error) = GetCurrentDirectoryW
103 //sys SetCurrentDirectory(path *uint16) (err error) = SetCurrentDirectoryW
104 //sys CreateDirectory(path *uint16, sa *SecurityAttributes) (err error) = CreateDirectoryW
105 //sys RemoveDirectory(path *uint16) (err error) = RemoveDirectoryW
106 //sys DeleteFile(path *uint16) (err error) = DeleteFileW
107 //sys MoveFile(from *uint16, to *uint16) (err error) = MoveFileW
108 //sys MoveFileEx(from *uint16, to *uint16, flags uint32) (err error) = MoveFileExW
109 //sys GetComputerName(buf *uint16, n *uint32) (err error) = GetComputerNameW
110 //sys GetComputerNameEx(nametype uint32, buf *uint16, n *uint32) (err error) = GetComputerNameExW
111 //sys SetEndOfFile(handle Handle) (err error)
112 //sys GetSystemTimeAsFileTime(time *Filetime)
113 //sys GetSystemTimePreciseAsFileTime(time *Filetime)
114 //sys GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff]
115 //sys CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uint32, threadcnt uint32) (handle Handle, err error)
116 //sys GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uint32, overlapped **Overlapped, timeout uint32) (err error)
117 //sys PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uint32, overlapped *Overlapped) (err error)
118 //sys CancelIo(s Handle) (err error)
119 //sys CancelIoEx(s Handle, o *Overlapped) (err error)
120 //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
121 //sys OpenProcess(da uint32, inheritHandle bool, pid uint32) (handle Handle, err error)
122 //sys TerminateProcess(handle Handle, exitcode uint32) (err error)
123 //sys GetExitCodeProcess(handle Handle, exitcode *uint32) (err error)
124 //sys GetStartupInfo(startupInfo *StartupInfo) (err error) = GetStartupInfoW
125 //sys GetCurrentProcess() (pseudoHandle Handle, err error)
126 //sys GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error)
127 //sys DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error)
128 //sys WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff]
129 //sys GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW
130 //sys CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error)
131 //sys GetFileType(filehandle Handle) (n uint32, err error)
132 //sys CryptAcquireContext(provhandle *Handle, container *uint16, provider *uint16, provtype uint32, flags uint32) (err error) = advapi32.CryptAcquireContextW
133 //sys CryptReleaseContext(provhandle Handle, flags uint32) (err error) = advapi32.CryptReleaseContext
134 //sys CryptGenRandom(provhandle Handle, buflen uint32, buf *byte) (err error) = advapi32.CryptGenRandom
135 //sys GetEnvironmentStrings() (envs *uint16, err error) [failretval==nil] = kernel32.GetEnvironmentStringsW
136 //sys FreeEnvironmentStrings(envs *uint16) (err error) = kernel32.FreeEnvironmentStringsW
137 //sys GetEnvironmentVariable(name *uint16, buffer *uint16, size uint32) (n uint32, err error) = kernel32.GetEnvironmentVariableW
138 //sys SetEnvironmentVariable(name *uint16, value *uint16) (err error) = kernel32.SetEnvironmentVariableW
139 //sys SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error)
140 //sys GetFileAttributes(name *uint16) (attrs uint32, err error) [failretval==INVALID_FILE_ATTRIBUTES] = kernel32.GetFileAttributesW
141 //sys SetFileAttributes(name *uint16, attrs uint32) (err error) = kernel32.SetFileAttributesW
142 //sys GetFileAttributesEx(name *uint16, level uint32, info *byte) (err error) = kernel32.GetFileAttributesExW
143 //sys GetCommandLine() (cmd *uint16) = kernel32.GetCommandLineW
144 //sys CommandLineToArgv(cmd *uint16, argc *int32) (argv *[8192]*[8192]uint16, err error) [failretval==nil] = shell32.CommandLineToArgvW
145 //sys LocalFree(hmem Handle) (handle Handle, err error) [failretval!=0]
146 //sys SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error)
147 //sys FlushFileBuffers(handle Handle) (err error)
148 //sys GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, err error) = kernel32.GetFullPathNameW
149 //sys GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err error) = kernel32.GetLongPathNameW
150 //sys GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW
151 //sys CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) = kernel32.CreateFileMappingW
152 //sys MapViewOfFile(handle Handle, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, err error)
153 //sys UnmapViewOfFile(addr uintptr) (err error)
154 //sys FlushViewOfFile(addr uintptr, length uintptr) (err error)
155 //sys VirtualLock(addr uintptr, length uintptr) (err error)
156 //sys VirtualUnlock(addr uintptr, length uintptr) (err error)
157 //sys VirtualAlloc(address uintptr, size uintptr, alloctype uint32, protect uint32) (value uintptr, err error) = kernel32.VirtualAlloc
158 //sys VirtualFree(address uintptr, size uintptr, freetype uint32) (err error) = kernel32.VirtualFree
159 //sys VirtualProtect(address uintptr, size uintptr, newprotect uint32, oldprotect *uint32) (err error) = kernel32.VirtualProtect
160 //sys TransmitFile(s Handle, handle Handle, bytesToWrite uint32, bytsPerSend uint32, overlapped *Overlapped, transmitFileBuf *TransmitFileBuffers, flags uint32) (err error) = mswsock.TransmitFile
161 //sys ReadDirectoryChanges(handle Handle, buf *byte, buflen uint32, watchSubTree bool, mask uint32, retlen *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) = kernel32.ReadDirectoryChangesW
162 //sys CertOpenSystemStore(hprov Handle, name *uint16) (store Handle, err error) = crypt32.CertOpenSystemStoreW
163 //sys CertOpenStore(storeProvider uintptr, msgAndCertEncodingType uint32, cryptProv uintptr, flags uint32, para uintptr) (handle Handle, err error) [failretval==InvalidHandle] = crypt32.CertOpenStore
164 //sys CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) [failretval==nil] = crypt32.CertEnumCertificatesInStore
165 //sys CertAddCertificateContextToStore(store Handle, certContext *CertContext, addDisposition uint32, storeContext **CertContext) (err error) = crypt32.CertAddCertificateContextToStore
166 //sys CertCloseStore(store Handle, flags uint32) (err error) = crypt32.CertCloseStore
167 //sys CertGetCertificateChain(engine Handle, leaf *CertContext, time *Filetime, additionalStore Handle, para *CertChainPara, flags uint32, reserved uintptr, chainCtx **CertChainContext) (err error) = crypt32.CertGetCertificateChain
168 //sys CertFreeCertificateChain(ctx *CertChainContext) = crypt32.CertFreeCertificateChain
169 //sys CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, encodedLen uint32) (context *CertContext, err error) [failretval==nil] = crypt32.CertCreateCertificateContext
170 //sys CertFreeCertificateContext(ctx *CertContext) (err error) = crypt32.CertFreeCertificateContext
171 //sys CertVerifyCertificateChainPolicy(policyOID uintptr, chain *CertChainContext, para *CertChainPolicyPara, status *CertChainPolicyStatus) (err error) = crypt32.CertVerifyCertificateChainPolicy
172 //sys RegOpenKeyEx(key Handle, subkey *uint16, options uint32, desiredAccess uint32, result *Handle) (regerrno error) = advapi32.RegOpenKeyExW
173 //sys RegCloseKey(key Handle) (regerrno error) = advapi32.RegCloseKey
174 //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
175 //sys RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW
176 //sys RegQueryValueEx(key Handle, name *uint16, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegQueryValueExW
177 //sys getCurrentProcessId() (pid uint32) = kernel32.GetCurrentProcessId
178 //sys GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode
179 //sys SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode
180 //sys GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo
181 //sys WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW
182 //sys ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW
183 //sys CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot
184 //sys Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32FirstW
185 //sys Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32NextW
186 //sys DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBufferSize uint32, outBuffer *byte, outBufferSize uint32, bytesReturned *uint32, overlapped *Overlapped) (err error)
187 // This function returns 1 byte BOOLEAN rather than the 4 byte BOOL.
188 //sys CreateSymbolicLink(symlinkfilename *uint16, targetfilename *uint16, flags uint32) (err error) [failretval&0xff==0] = CreateSymbolicLinkW
189 //sys CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr) (err error) [failretval&0xff==0] = CreateHardLinkW
190 //sys GetCurrentThreadId() (id uint32)
191 //sys CreateEvent(eventAttrs *SecurityAttributes, manualReset uint32, initialState uint32, name *uint16) (handle Handle, err error) = kernel32.CreateEventW
192 //sys CreateEventEx(eventAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) = kernel32.CreateEventExW
193 //sys OpenEvent(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenEventW
194 //sys SetEvent(event Handle) (err error) = kernel32.SetEvent
195 //sys ResetEvent(event Handle) (err error) = kernel32.ResetEvent
196 //sys PulseEvent(event Handle) (err error) = kernel32.PulseEvent
198 // syscall interface implementation for other packages
200 func Exit(code int) { ExitProcess(uint32(code)) }
202 func makeInheritSa() *SecurityAttributes {
203 var sa SecurityAttributes
204 sa.Length = uint32(unsafe.Sizeof(sa))
209 func Open(path string, mode int, perm uint32) (fd Handle, err error) {
211 return InvalidHandle, ERROR_FILE_NOT_FOUND
213 pathp, err := UTF16PtrFromString(path)
215 return InvalidHandle, err
218 switch mode & (O_RDONLY | O_WRONLY | O_RDWR) {
220 access = GENERIC_READ
222 access = GENERIC_WRITE
224 access = GENERIC_READ | GENERIC_WRITE
226 if mode&O_CREAT != 0 {
227 access |= GENERIC_WRITE
229 if mode&O_APPEND != 0 {
230 access &^= GENERIC_WRITE
231 access |= FILE_APPEND_DATA
233 sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE)
234 var sa *SecurityAttributes
235 if mode&O_CLOEXEC == 0 {
238 var createmode uint32
240 case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL):
241 createmode = CREATE_NEW
242 case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC):
243 createmode = CREATE_ALWAYS
244 case mode&O_CREAT == O_CREAT:
245 createmode = OPEN_ALWAYS
246 case mode&O_TRUNC == O_TRUNC:
247 createmode = TRUNCATE_EXISTING
249 createmode = OPEN_EXISTING
251 h, e := CreateFile(pathp, access, sharemode, sa, createmode, FILE_ATTRIBUTE_NORMAL, 0)
255 func Read(fd Handle, p []byte) (n int, err error) {
257 e := ReadFile(fd, p, &done, nil)
259 if e == ERROR_BROKEN_PIPE {
260 // NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin
267 raceWriteRange(unsafe.Pointer(&p[0]), int(done))
269 raceAcquire(unsafe.Pointer(&ioSync))
271 return int(done), nil
274 func Write(fd Handle, p []byte) (n int, err error) {
276 raceReleaseMerge(unsafe.Pointer(&ioSync))
279 e := WriteFile(fd, p, &done, nil)
283 if raceenabled && done > 0 {
284 raceReadRange(unsafe.Pointer(&p[0]), int(done))
286 return int(done), nil
291 func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) {
301 hi := int32(offset >> 32)
303 // use GetFileType to check pipe, pipe can't do seek
304 ft, _ := GetFileType(fd)
305 if ft == FILE_TYPE_PIPE {
306 return 0, syscall.EPIPE
308 rlo, e := SetFilePointer(fd, lo, &hi, w)
312 return int64(hi)<<32 + int64(rlo), nil
315 func Close(fd Handle) (err error) {
316 return CloseHandle(fd)
320 Stdin = getStdHandle(STD_INPUT_HANDLE)
321 Stdout = getStdHandle(STD_OUTPUT_HANDLE)
322 Stderr = getStdHandle(STD_ERROR_HANDLE)
325 func getStdHandle(stdhandle uint32) (fd Handle) {
326 r, _ := GetStdHandle(stdhandle)
331 const ImplementsGetwd = true
333 func Getwd() (wd string, err error) {
334 b := make([]uint16, 300)
335 n, e := GetCurrentDirectory(uint32(len(b)), &b[0])
339 return string(utf16.Decode(b[0:n])), nil
342 func Chdir(path string) (err error) {
343 pathp, err := UTF16PtrFromString(path)
347 return SetCurrentDirectory(pathp)
350 func Mkdir(path string, mode uint32) (err error) {
351 pathp, err := UTF16PtrFromString(path)
355 return CreateDirectory(pathp, nil)
358 func Rmdir(path string) (err error) {
359 pathp, err := UTF16PtrFromString(path)
363 return RemoveDirectory(pathp)
366 func Unlink(path string) (err error) {
367 pathp, err := UTF16PtrFromString(path)
371 return DeleteFile(pathp)
374 func Rename(oldpath, newpath string) (err error) {
375 from, err := UTF16PtrFromString(oldpath)
379 to, err := UTF16PtrFromString(newpath)
383 return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING)
386 func ComputerName() (name string, err error) {
387 var n uint32 = MAX_COMPUTERNAME_LENGTH + 1
388 b := make([]uint16, n)
389 e := GetComputerName(&b[0], &n)
393 return string(utf16.Decode(b[0:n])), nil
396 func Ftruncate(fd Handle, length int64) (err error) {
397 curoffset, e := Seek(fd, 0, 1)
401 defer Seek(fd, curoffset, 0)
402 _, e = Seek(fd, length, 0)
413 func Gettimeofday(tv *Timeval) (err error) {
415 GetSystemTimeAsFileTime(&ft)
416 *tv = NsecToTimeval(ft.Nanoseconds())
420 func Pipe(p []Handle) (err error) {
422 return syscall.EINVAL
425 e := CreatePipe(&r, &w, makeInheritSa(), 0)
434 func Utimes(path string, tv []Timeval) (err error) {
436 return syscall.EINVAL
438 pathp, e := UTF16PtrFromString(path)
442 h, e := CreateFile(pathp,
443 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil,
444 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0)
449 a := NsecToFiletime(tv[0].Nanoseconds())
450 w := NsecToFiletime(tv[1].Nanoseconds())
451 return SetFileTime(h, nil, &a, &w)
454 func UtimesNano(path string, ts []Timespec) (err error) {
456 return syscall.EINVAL
458 pathp, e := UTF16PtrFromString(path)
462 h, e := CreateFile(pathp,
463 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil,
464 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0)
469 a := NsecToFiletime(TimespecToNsec(ts[0]))
470 w := NsecToFiletime(TimespecToNsec(ts[1]))
471 return SetFileTime(h, nil, &a, &w)
474 func Fsync(fd Handle) (err error) {
475 return FlushFileBuffers(fd)
478 func Chmod(path string, mode uint32) (err error) {
480 return syscall.EINVAL
482 p, e := UTF16PtrFromString(path)
486 attrs, e := GetFileAttributes(p)
490 if mode&S_IWRITE != 0 {
491 attrs &^= FILE_ATTRIBUTE_READONLY
493 attrs |= FILE_ATTRIBUTE_READONLY
495 return SetFileAttributes(p, attrs)
498 func LoadGetSystemTimePreciseAsFileTime() error {
499 return procGetSystemTimePreciseAsFileTime.Find()
502 func LoadCancelIoEx() error {
503 return procCancelIoEx.Find()
506 func LoadSetFileCompletionNotificationModes() error {
507 return procSetFileCompletionNotificationModes.Find()
512 const socket_error = uintptr(^uint32(0))
514 //sys WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup
515 //sys WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup
516 //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
517 //sys socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket
518 //sys Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt
519 //sys Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt
520 //sys bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind
521 //sys connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect
522 //sys getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname
523 //sys getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername
524 //sys listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen
525 //sys shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown
526 //sys Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket
527 //sys AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx
528 //sys GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs
529 //sys WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv
530 //sys WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend
531 //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
532 //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
533 //sys GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname
534 //sys GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname
535 //sys Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs
536 //sys GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname
537 //sys DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W
538 //sys DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree
539 //sys DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W
540 //sys GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW
541 //sys FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW
542 //sys GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry
543 //sys GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo
544 //sys SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes
545 //sys WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW
546 //sys GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses
547 //sys GetACP() (acp uint32) = kernel32.GetACP
548 //sys MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar
550 // For testing: clients can set this flag to force
551 // creation of IPv6 sockets to return EAFNOSUPPORT.
552 var SocketDisableIPv6 bool
554 type RawSockaddrInet4 struct {
557 Addr [4]byte /* in_addr */
561 type RawSockaddrInet6 struct {
565 Addr [16]byte /* in6_addr */
569 type RawSockaddr struct {
574 type RawSockaddrAny struct {
579 type Sockaddr interface {
580 sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs
583 type SockaddrInet4 struct {
589 func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) {
590 if sa.Port < 0 || sa.Port > 0xFFFF {
591 return nil, 0, syscall.EINVAL
593 sa.raw.Family = AF_INET
594 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
595 p[0] = byte(sa.Port >> 8)
597 for i := 0; i < len(sa.Addr); i++ {
598 sa.raw.Addr[i] = sa.Addr[i]
600 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil
603 type SockaddrInet6 struct {
610 func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) {
611 if sa.Port < 0 || sa.Port > 0xFFFF {
612 return nil, 0, syscall.EINVAL
614 sa.raw.Family = AF_INET6
615 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
616 p[0] = byte(sa.Port >> 8)
618 sa.raw.Scope_id = sa.ZoneId
619 for i := 0; i < len(sa.Addr); i++ {
620 sa.raw.Addr[i] = sa.Addr[i]
622 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil
625 type SockaddrUnix struct {
629 func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) {
630 // TODO(brainman): implement SockaddrUnix.sockaddr()
631 return nil, 0, syscall.EWINDOWS
634 func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) {
635 switch rsa.Addr.Family {
637 return nil, syscall.EWINDOWS
640 pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
641 sa := new(SockaddrInet4)
642 p := (*[2]byte)(unsafe.Pointer(&pp.Port))
643 sa.Port = int(p[0])<<8 + int(p[1])
644 for i := 0; i < len(sa.Addr); i++ {
645 sa.Addr[i] = pp.Addr[i]
650 pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
651 sa := new(SockaddrInet6)
652 p := (*[2]byte)(unsafe.Pointer(&pp.Port))
653 sa.Port = int(p[0])<<8 + int(p[1])
654 sa.ZoneId = pp.Scope_id
655 for i := 0; i < len(sa.Addr); i++ {
656 sa.Addr[i] = pp.Addr[i]
660 return nil, syscall.EAFNOSUPPORT
663 func Socket(domain, typ, proto int) (fd Handle, err error) {
664 if domain == AF_INET6 && SocketDisableIPv6 {
665 return InvalidHandle, syscall.EAFNOSUPPORT
667 return socket(int32(domain), int32(typ), int32(proto))
670 func SetsockoptInt(fd Handle, level, opt int, value int) (err error) {
672 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v)))
675 func Bind(fd Handle, sa Sockaddr) (err error) {
676 ptr, n, err := sa.sockaddr()
680 return bind(fd, ptr, n)
683 func Connect(fd Handle, sa Sockaddr) (err error) {
684 ptr, n, err := sa.sockaddr()
688 return connect(fd, ptr, n)
691 func Getsockname(fd Handle) (sa Sockaddr, err error) {
692 var rsa RawSockaddrAny
693 l := int32(unsafe.Sizeof(rsa))
694 if err = getsockname(fd, &rsa, &l); err != nil {
697 return rsa.Sockaddr()
700 func Getpeername(fd Handle) (sa Sockaddr, err error) {
701 var rsa RawSockaddrAny
702 l := int32(unsafe.Sizeof(rsa))
703 if err = getpeername(fd, &rsa, &l); err != nil {
706 return rsa.Sockaddr()
709 func Listen(s Handle, n int) (err error) {
710 return listen(s, int32(n))
713 func Shutdown(fd Handle, how int) (err error) {
714 return shutdown(fd, int32(how))
717 func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) {
718 rsa, l, err := to.sockaddr()
722 return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine)
725 func LoadGetAddrInfo() error {
726 return procGetAddrInfoW.Find()
729 var connectExFunc struct {
735 func LoadConnectEx() error {
736 connectExFunc.once.Do(func() {
738 s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
739 if connectExFunc.err != nil {
744 connectExFunc.err = WSAIoctl(s,
745 SIO_GET_EXTENSION_FUNCTION_POINTER,
746 (*byte)(unsafe.Pointer(&WSAID_CONNECTEX)),
747 uint32(unsafe.Sizeof(WSAID_CONNECTEX)),
748 (*byte)(unsafe.Pointer(&connectExFunc.addr)),
749 uint32(unsafe.Sizeof(connectExFunc.addr)),
752 return connectExFunc.err
755 func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) {
756 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)
767 func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error {
768 err := LoadConnectEx()
770 return errorspkg.New("failed to find ConnectEx: " + err.Error())
772 ptr, n, err := sa.sockaddr()
776 return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped)
779 // Invented structures to support what package os expects.
781 CreationTime Filetime
787 type WaitStatus struct {
791 func (w WaitStatus) Exited() bool { return true }
793 func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) }
795 func (w WaitStatus) Signal() Signal { return -1 }
797 func (w WaitStatus) CoreDump() bool { return false }
799 func (w WaitStatus) Stopped() bool { return false }
801 func (w WaitStatus) Continued() bool { return false }
803 func (w WaitStatus) StopSignal() Signal { return -1 }
805 func (w WaitStatus) Signaled() bool { return false }
807 func (w WaitStatus) TrapCause() int { return -1 }
809 // Timespec is an invented structure on Windows, but here for
810 // consistency with the corresponding package for other operating systems.
811 type Timespec struct {
816 func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
818 func NsecToTimespec(nsec int64) (ts Timespec) {
824 // TODO(brainman): fix all needed for net
826 func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS }
827 func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) {
828 return 0, nil, syscall.EWINDOWS
830 func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) { return syscall.EWINDOWS }
831 func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS }
833 // The Linger struct is wrong but we only noticed after Go 1.
834 // sysLinger is the real system call structure.
836 // BUG(brainman): The definition of Linger is not appropriate for direct use
837 // with Setsockopt and Getsockopt.
838 // Use SetsockoptLinger instead.
845 type sysLinger struct {
851 Multiaddr [4]byte /* in_addr */
852 Interface [4]byte /* in_addr */
855 type IPv6Mreq struct {
856 Multiaddr [16]byte /* in6_addr */
860 func GetsockoptInt(fd Handle, level, opt int) (int, error) { return -1, syscall.EWINDOWS }
862 func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) {
863 sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)}
864 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys)))
867 func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) {
868 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4)
870 func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) {
871 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq)))
873 func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) {
874 return syscall.EWINDOWS
877 func Getpid() (pid int) { return int(getCurrentProcessId()) }
879 func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) {
880 // NOTE(rsc): The Win32finddata struct is wrong for the system call:
881 // the two paths are each one uint16 short. Use the correct struct,
882 // a win32finddata1, and then copy the results out.
883 // There is no loss of expressivity here, because the final
884 // uint16, if it is used, is supposed to be a NUL, and Go doesn't need that.
885 // For Go 1.1, we might avoid the allocation of win32finddata1 here
886 // by adding a final Bug [2]uint16 field to the struct and then
887 // adjusting the fields in the result directly.
888 var data1 win32finddata1
889 handle, err = findFirstFile1(name, &data1)
891 copyFindData(data, &data1)
896 func FindNextFile(handle Handle, data *Win32finddata) (err error) {
897 var data1 win32finddata1
898 err = findNextFile1(handle, &data1)
900 copyFindData(data, &data1)
905 func getProcessEntry(pid int) (*ProcessEntry32, error) {
906 snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)
910 defer CloseHandle(snapshot)
911 var procEntry ProcessEntry32
912 procEntry.Size = uint32(unsafe.Sizeof(procEntry))
913 if err = Process32First(snapshot, &procEntry); err != nil {
917 if procEntry.ProcessID == uint32(pid) {
918 return &procEntry, nil
920 err = Process32Next(snapshot, &procEntry)
927 func Getppid() (ppid int) {
928 pe, err := getProcessEntry(Getpid())
932 return int(pe.ParentProcessID)
935 // TODO(brainman): fix all needed for os
936 func Fchdir(fd Handle) (err error) { return syscall.EWINDOWS }
937 func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS }
938 func Symlink(path, link string) (err error) { return syscall.EWINDOWS }
940 func Fchmod(fd Handle, mode uint32) (err error) { return syscall.EWINDOWS }
941 func Chown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS }
942 func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS }
943 func Fchown(fd Handle, uid int, gid int) (err error) { return syscall.EWINDOWS }
945 func Getuid() (uid int) { return -1 }
946 func Geteuid() (euid int) { return -1 }
947 func Getgid() (gid int) { return -1 }
948 func Getegid() (egid int) { return -1 }
949 func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS }
953 func (s Signal) Signal() {}
955 func (s Signal) String() string {
956 if 0 <= s && int(s) < len(signals) {
962 return "signal " + itoa(int(s))
965 func LoadCreateSymbolicLink() error {
966 return procCreateSymbolicLinkW.Find()
969 // Readlink returns the destination of the named symbolic link.
970 func Readlink(path string, buf []byte) (n int, err error) {
971 fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING,
972 FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0)
976 defer CloseHandle(fd)
978 rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE)
979 var bytesReturned uint32
980 err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil)
985 rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0]))
987 switch rdb.ReparseTag {
988 case IO_REPARSE_TAG_SYMLINK:
989 data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer))
990 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0]))
991 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2])
992 case IO_REPARSE_TAG_MOUNT_POINT:
993 data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer))
994 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0]))
995 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2])
997 // the path is not a symlink or junction but another type of reparse
999 return -1, syscall.ENOENT
1001 n = copy(buf, []byte(s))