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}