github.com/ie310mu/ie310go/forks/golang.org/x/sys@v0.0.0-20190821095322-9a46783d4de5/windows/syscall_windows.go (about) 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 7 package windows 8 9 import ( 10 errorspkg "errors" 11 "sync" 12 "syscall" 13 "time" 14 "unicode/utf16" 15 "unsafe" 16 ) 17 18 type Handle uintptr 19 20 const ( 21 InvalidHandle = ^Handle(0) 22 23 // Flags for DefineDosDevice. 24 DDD_EXACT_MATCH_ON_REMOVE = 0x00000004 25 DDD_NO_BROADCAST_SYSTEM = 0x00000008 26 DDD_RAW_TARGET_PATH = 0x00000001 27 DDD_REMOVE_DEFINITION = 0x00000002 28 29 // Return values for GetDriveType. 30 DRIVE_UNKNOWN = 0 31 DRIVE_NO_ROOT_DIR = 1 32 DRIVE_REMOVABLE = 2 33 DRIVE_FIXED = 3 34 DRIVE_REMOTE = 4 35 DRIVE_CDROM = 5 36 DRIVE_RAMDISK = 6 37 38 // File system flags from GetVolumeInformation and GetVolumeInformationByHandle. 39 FILE_CASE_SENSITIVE_SEARCH = 0x00000001 40 FILE_CASE_PRESERVED_NAMES = 0x00000002 41 FILE_FILE_COMPRESSION = 0x00000010 42 FILE_DAX_VOLUME = 0x20000000 43 FILE_NAMED_STREAMS = 0x00040000 44 FILE_PERSISTENT_ACLS = 0x00000008 45 FILE_READ_ONLY_VOLUME = 0x00080000 46 FILE_SEQUENTIAL_WRITE_ONCE = 0x00100000 47 FILE_SUPPORTS_ENCRYPTION = 0x00020000 48 FILE_SUPPORTS_EXTENDED_ATTRIBUTES = 0x00800000 49 FILE_SUPPORTS_HARD_LINKS = 0x00400000 50 FILE_SUPPORTS_OBJECT_IDS = 0x00010000 51 FILE_SUPPORTS_OPEN_BY_FILE_ID = 0x01000000 52 FILE_SUPPORTS_REPARSE_POINTS = 0x00000080 53 FILE_SUPPORTS_SPARSE_FILES = 0x00000040 54 FILE_SUPPORTS_TRANSACTIONS = 0x00200000 55 FILE_SUPPORTS_USN_JOURNAL = 0x02000000 56 FILE_UNICODE_ON_DISK = 0x00000004 57 FILE_VOLUME_IS_COMPRESSED = 0x00008000 58 FILE_VOLUME_QUOTAS = 0x00000020 59 60 // Return values of SleepEx and other APC functions 61 STATUS_USER_APC = 0x000000C0 62 WAIT_IO_COMPLETION = STATUS_USER_APC 63 ) 64 65 // StringToUTF16 is deprecated. Use UTF16FromString instead. 66 // If s contains a NUL byte this function panics instead of 67 // returning an error. 68 func StringToUTF16(s string) []uint16 { 69 a, err := UTF16FromString(s) 70 if err != nil { 71 panic("windows: string with NUL passed to StringToUTF16") 72 } 73 return a 74 } 75 76 // UTF16FromString returns the UTF-16 encoding of the UTF-8 string 77 // s, with a terminating NUL added. If s contains a NUL byte at any 78 // location, it returns (nil, syscall.EINVAL). 79 func UTF16FromString(s string) ([]uint16, error) { 80 for i := 0; i < len(s); i++ { 81 if s[i] == 0 { 82 return nil, syscall.EINVAL 83 } 84 } 85 return utf16.Encode([]rune(s + "\x00")), nil 86 } 87 88 // UTF16ToString returns the UTF-8 encoding of the UTF-16 sequence s, 89 // with a terminating NUL removed. 90 func UTF16ToString(s []uint16) string { 91 for i, v := range s { 92 if v == 0 { 93 s = s[0:i] 94 break 95 } 96 } 97 return string(utf16.Decode(s)) 98 } 99 100 // StringToUTF16Ptr is deprecated. Use UTF16PtrFromString instead. 101 // If s contains a NUL byte this function panics instead of 102 // returning an error. 103 func StringToUTF16Ptr(s string) *uint16 { return &StringToUTF16(s)[0] } 104 105 // UTF16PtrFromString returns pointer to the UTF-16 encoding of 106 // the UTF-8 string s, with a terminating NUL added. If s 107 // contains a NUL byte at any location, it returns (nil, syscall.EINVAL). 108 func UTF16PtrFromString(s string) (*uint16, error) { 109 a, err := UTF16FromString(s) 110 if err != nil { 111 return nil, err 112 } 113 return &a[0], nil 114 } 115 116 func Getpagesize() int { return 4096 } 117 118 // NewCallback converts a Go function to a function pointer conforming to the stdcall calling convention. 119 // This is useful when interoperating with Windows code requiring callbacks. 120 // The argument is expected to be a function with with one uintptr-sized result. The function must not have arguments with size larger than the size of uintptr. 121 func NewCallback(fn interface{}) uintptr { 122 return syscall.NewCallback(fn) 123 } 124 125 // NewCallbackCDecl converts a Go function to a function pointer conforming to the cdecl calling convention. 126 // This is useful when interoperating with Windows code requiring callbacks. 127 // The argument is expected to be a function with with one uintptr-sized result. The function must not have arguments with size larger than the size of uintptr. 128 func NewCallbackCDecl(fn interface{}) uintptr { 129 return syscall.NewCallbackCDecl(fn) 130 } 131 132 // windows api calls 133 134 //sys GetLastError() (lasterr error) 135 //sys LoadLibrary(libname string) (handle Handle, err error) = LoadLibraryW 136 //sys LoadLibraryEx(libname string, zero Handle, flags uintptr) (handle Handle, err error) = LoadLibraryExW 137 //sys FreeLibrary(handle Handle) (err error) 138 //sys GetProcAddress(module Handle, procname string) (proc uintptr, err error) 139 //sys GetVersion() (ver uint32, err error) 140 //sys FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW 141 //sys ExitProcess(exitcode uint32) 142 //sys IsWow64Process(handle Handle, isWow64 *bool) (err error) = IsWow64Process 143 //sys CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile Handle) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW 144 //sys ReadFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) 145 //sys WriteFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) 146 //sys GetOverlappedResult(handle Handle, overlapped *Overlapped, done *uint32, wait bool) (err error) 147 //sys SetFilePointer(handle Handle, lowoffset int32, highoffsetptr *int32, whence uint32) (newlowoffset uint32, err error) [failretval==0xffffffff] 148 //sys CloseHandle(handle Handle) (err error) 149 //sys GetStdHandle(stdhandle uint32) (handle Handle, err error) [failretval==InvalidHandle] 150 //sys SetStdHandle(stdhandle uint32, handle Handle) (err error) 151 //sys findFirstFile1(name *uint16, data *win32finddata1) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstFileW 152 //sys findNextFile1(handle Handle, data *win32finddata1) (err error) = FindNextFileW 153 //sys FindClose(handle Handle) (err error) 154 //sys GetFileInformationByHandle(handle Handle, data *ByHandleFileInformation) (err error) 155 //sys GetFileInformationByHandleEx(handle Handle, class uint32, outBuffer *byte, outBufferLen uint32) (err error) 156 //sys GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, err error) = GetCurrentDirectoryW 157 //sys SetCurrentDirectory(path *uint16) (err error) = SetCurrentDirectoryW 158 //sys CreateDirectory(path *uint16, sa *SecurityAttributes) (err error) = CreateDirectoryW 159 //sys RemoveDirectory(path *uint16) (err error) = RemoveDirectoryW 160 //sys DeleteFile(path *uint16) (err error) = DeleteFileW 161 //sys MoveFile(from *uint16, to *uint16) (err error) = MoveFileW 162 //sys MoveFileEx(from *uint16, to *uint16, flags uint32) (err error) = MoveFileExW 163 //sys GetComputerName(buf *uint16, n *uint32) (err error) = GetComputerNameW 164 //sys GetComputerNameEx(nametype uint32, buf *uint16, n *uint32) (err error) = GetComputerNameExW 165 //sys SetEndOfFile(handle Handle) (err error) 166 //sys GetSystemTimeAsFileTime(time *Filetime) 167 //sys GetSystemTimePreciseAsFileTime(time *Filetime) 168 //sys GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff] 169 //sys CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uint32, threadcnt uint32) (handle Handle, err error) 170 //sys GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uint32, overlapped **Overlapped, timeout uint32) (err error) 171 //sys PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uint32, overlapped *Overlapped) (err error) 172 //sys CancelIo(s Handle) (err error) 173 //sys CancelIoEx(s Handle, o *Overlapped) (err error) 174 //sys CreateProcess(appName *uint16, commandLine *uint16, procSecurity *SecurityAttributes, threadSecurity *SecurityAttributes, inheritHandles bool, creationFlags uint32, env *uint16, currentDir *uint16, startupInfo *StartupInfo, outProcInfo *ProcessInformation) (err error) = CreateProcessW 175 //sys OpenProcess(da uint32, inheritHandle bool, pid uint32) (handle Handle, err error) 176 //sys ShellExecute(hwnd Handle, verb *uint16, file *uint16, args *uint16, cwd *uint16, showCmd int32) (err error) = shell32.ShellExecuteW 177 //sys TerminateProcess(handle Handle, exitcode uint32) (err error) 178 //sys GetExitCodeProcess(handle Handle, exitcode *uint32) (err error) 179 //sys GetStartupInfo(startupInfo *StartupInfo) (err error) = GetStartupInfoW 180 //sys GetCurrentProcess() (pseudoHandle Handle, err error) 181 //sys GetCurrentThread() (pseudoHandle Handle, err error) 182 //sys GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error) 183 //sys DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error) 184 //sys WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] 185 //sys waitForMultipleObjects(count uint32, handles uintptr, waitAll bool, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] = WaitForMultipleObjects 186 //sys GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW 187 //sys CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error) 188 //sys GetFileType(filehandle Handle) (n uint32, err error) 189 //sys CryptAcquireContext(provhandle *Handle, container *uint16, provider *uint16, provtype uint32, flags uint32) (err error) = advapi32.CryptAcquireContextW 190 //sys CryptReleaseContext(provhandle Handle, flags uint32) (err error) = advapi32.CryptReleaseContext 191 //sys CryptGenRandom(provhandle Handle, buflen uint32, buf *byte) (err error) = advapi32.CryptGenRandom 192 //sys GetEnvironmentStrings() (envs *uint16, err error) [failretval==nil] = kernel32.GetEnvironmentStringsW 193 //sys FreeEnvironmentStrings(envs *uint16) (err error) = kernel32.FreeEnvironmentStringsW 194 //sys GetEnvironmentVariable(name *uint16, buffer *uint16, size uint32) (n uint32, err error) = kernel32.GetEnvironmentVariableW 195 //sys SetEnvironmentVariable(name *uint16, value *uint16) (err error) = kernel32.SetEnvironmentVariableW 196 //sys CreateEnvironmentBlock(block **uint16, token Token, inheritExisting bool) (err error) = userenv.CreateEnvironmentBlock 197 //sys DestroyEnvironmentBlock(block *uint16) (err error) = userenv.DestroyEnvironmentBlock 198 //sys getTickCount64() (ms uint64) = kernel32.GetTickCount64 199 //sys SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error) 200 //sys GetFileAttributes(name *uint16) (attrs uint32, err error) [failretval==INVALID_FILE_ATTRIBUTES] = kernel32.GetFileAttributesW 201 //sys SetFileAttributes(name *uint16, attrs uint32) (err error) = kernel32.SetFileAttributesW 202 //sys GetFileAttributesEx(name *uint16, level uint32, info *byte) (err error) = kernel32.GetFileAttributesExW 203 //sys GetCommandLine() (cmd *uint16) = kernel32.GetCommandLineW 204 //sys CommandLineToArgv(cmd *uint16, argc *int32) (argv *[8192]*[8192]uint16, err error) [failretval==nil] = shell32.CommandLineToArgvW 205 //sys LocalFree(hmem Handle) (handle Handle, err error) [failretval!=0] 206 //sys SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error) 207 //sys FlushFileBuffers(handle Handle) (err error) 208 //sys GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, err error) = kernel32.GetFullPathNameW 209 //sys GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err error) = kernel32.GetLongPathNameW 210 //sys GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW 211 //sys CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) = kernel32.CreateFileMappingW 212 //sys MapViewOfFile(handle Handle, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, err error) 213 //sys UnmapViewOfFile(addr uintptr) (err error) 214 //sys FlushViewOfFile(addr uintptr, length uintptr) (err error) 215 //sys VirtualLock(addr uintptr, length uintptr) (err error) 216 //sys VirtualUnlock(addr uintptr, length uintptr) (err error) 217 //sys VirtualAlloc(address uintptr, size uintptr, alloctype uint32, protect uint32) (value uintptr, err error) = kernel32.VirtualAlloc 218 //sys VirtualFree(address uintptr, size uintptr, freetype uint32) (err error) = kernel32.VirtualFree 219 //sys VirtualProtect(address uintptr, size uintptr, newprotect uint32, oldprotect *uint32) (err error) = kernel32.VirtualProtect 220 //sys TransmitFile(s Handle, handle Handle, bytesToWrite uint32, bytsPerSend uint32, overlapped *Overlapped, transmitFileBuf *TransmitFileBuffers, flags uint32) (err error) = mswsock.TransmitFile 221 //sys ReadDirectoryChanges(handle Handle, buf *byte, buflen uint32, watchSubTree bool, mask uint32, retlen *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) = kernel32.ReadDirectoryChangesW 222 //sys CertOpenSystemStore(hprov Handle, name *uint16) (store Handle, err error) = crypt32.CertOpenSystemStoreW 223 //sys CertOpenStore(storeProvider uintptr, msgAndCertEncodingType uint32, cryptProv uintptr, flags uint32, para uintptr) (handle Handle, err error) [failretval==InvalidHandle] = crypt32.CertOpenStore 224 //sys CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) [failretval==nil] = crypt32.CertEnumCertificatesInStore 225 //sys CertAddCertificateContextToStore(store Handle, certContext *CertContext, addDisposition uint32, storeContext **CertContext) (err error) = crypt32.CertAddCertificateContextToStore 226 //sys CertCloseStore(store Handle, flags uint32) (err error) = crypt32.CertCloseStore 227 //sys CertGetCertificateChain(engine Handle, leaf *CertContext, time *Filetime, additionalStore Handle, para *CertChainPara, flags uint32, reserved uintptr, chainCtx **CertChainContext) (err error) = crypt32.CertGetCertificateChain 228 //sys CertFreeCertificateChain(ctx *CertChainContext) = crypt32.CertFreeCertificateChain 229 //sys CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, encodedLen uint32) (context *CertContext, err error) [failretval==nil] = crypt32.CertCreateCertificateContext 230 //sys CertFreeCertificateContext(ctx *CertContext) (err error) = crypt32.CertFreeCertificateContext 231 //sys CertVerifyCertificateChainPolicy(policyOID uintptr, chain *CertChainContext, para *CertChainPolicyPara, status *CertChainPolicyStatus) (err error) = crypt32.CertVerifyCertificateChainPolicy 232 //sys RegOpenKeyEx(key Handle, subkey *uint16, options uint32, desiredAccess uint32, result *Handle) (regerrno error) = advapi32.RegOpenKeyExW 233 //sys RegCloseKey(key Handle) (regerrno error) = advapi32.RegCloseKey 234 //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 235 //sys RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW 236 //sys RegQueryValueEx(key Handle, name *uint16, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegQueryValueExW 237 //sys GetCurrentProcessId() (pid uint32) = kernel32.GetCurrentProcessId 238 //sys GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode 239 //sys SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode 240 //sys GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo 241 //sys WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW 242 //sys ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW 243 //sys CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot 244 //sys Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32FirstW 245 //sys Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32NextW 246 //sys Thread32First(snapshot Handle, threadEntry *ThreadEntry32) (err error) 247 //sys Thread32Next(snapshot Handle, threadEntry *ThreadEntry32) (err error) 248 //sys DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBufferSize uint32, outBuffer *byte, outBufferSize uint32, bytesReturned *uint32, overlapped *Overlapped) (err error) 249 // This function returns 1 byte BOOLEAN rather than the 4 byte BOOL. 250 //sys CreateSymbolicLink(symlinkfilename *uint16, targetfilename *uint16, flags uint32) (err error) [failretval&0xff==0] = CreateSymbolicLinkW 251 //sys CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr) (err error) [failretval&0xff==0] = CreateHardLinkW 252 //sys GetCurrentThreadId() (id uint32) 253 //sys CreateEvent(eventAttrs *SecurityAttributes, manualReset uint32, initialState uint32, name *uint16) (handle Handle, err error) = kernel32.CreateEventW 254 //sys CreateEventEx(eventAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) = kernel32.CreateEventExW 255 //sys OpenEvent(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenEventW 256 //sys SetEvent(event Handle) (err error) = kernel32.SetEvent 257 //sys ResetEvent(event Handle) (err error) = kernel32.ResetEvent 258 //sys PulseEvent(event Handle) (err error) = kernel32.PulseEvent 259 //sys SleepEx(milliseconds uint32, alertable bool) (ret uint32) = kernel32.SleepEx 260 //sys CreateJobObject(jobAttr *SecurityAttributes, name *uint16) (handle Handle, err error) = kernel32.CreateJobObjectW 261 //sys AssignProcessToJobObject(job Handle, process Handle) (err error) = kernel32.AssignProcessToJobObject 262 //sys TerminateJobObject(job Handle, exitCode uint32) (err error) = kernel32.TerminateJobObject 263 //sys SetErrorMode(mode uint32) (ret uint32) = kernel32.SetErrorMode 264 //sys ResumeThread(thread Handle) (ret uint32, err error) [failretval==0xffffffff] = kernel32.ResumeThread 265 //sys SetPriorityClass(process Handle, priorityClass uint32) (err error) = kernel32.SetPriorityClass 266 //sys GetPriorityClass(process Handle) (ret uint32, err error) = kernel32.GetPriorityClass 267 //sys SetInformationJobObject(job Handle, JobObjectInformationClass uint32, JobObjectInformation uintptr, JobObjectInformationLength uint32) (ret int, err error) 268 //sys GenerateConsoleCtrlEvent(ctrlEvent uint32, processGroupID uint32) (err error) 269 270 // Volume Management Functions 271 //sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW 272 //sys DeleteVolumeMountPoint(volumeMountPoint *uint16) (err error) = DeleteVolumeMountPointW 273 //sys FindFirstVolume(volumeName *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeW 274 //sys FindFirstVolumeMountPoint(rootPathName *uint16, volumeMountPoint *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeMountPointW 275 //sys FindNextVolume(findVolume Handle, volumeName *uint16, bufferLength uint32) (err error) = FindNextVolumeW 276 //sys FindNextVolumeMountPoint(findVolumeMountPoint Handle, volumeMountPoint *uint16, bufferLength uint32) (err error) = FindNextVolumeMountPointW 277 //sys FindVolumeClose(findVolume Handle) (err error) 278 //sys FindVolumeMountPointClose(findVolumeMountPoint Handle) (err error) 279 //sys GetDriveType(rootPathName *uint16) (driveType uint32) = GetDriveTypeW 280 //sys GetLogicalDrives() (drivesBitMask uint32, err error) [failretval==0] 281 //sys GetLogicalDriveStrings(bufferLength uint32, buffer *uint16) (n uint32, err error) [failretval==0] = GetLogicalDriveStringsW 282 //sys GetVolumeInformation(rootPathName *uint16, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationW 283 //sys GetVolumeInformationByHandle(file Handle, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationByHandleW 284 //sys GetVolumeNameForVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16, bufferlength uint32) (err error) = GetVolumeNameForVolumeMountPointW 285 //sys GetVolumePathName(fileName *uint16, volumePathName *uint16, bufferLength uint32) (err error) = GetVolumePathNameW 286 //sys GetVolumePathNamesForVolumeName(volumeName *uint16, volumePathNames *uint16, bufferLength uint32, returnLength *uint32) (err error) = GetVolumePathNamesForVolumeNameW 287 //sys QueryDosDevice(deviceName *uint16, targetPath *uint16, max uint32) (n uint32, err error) [failretval==0] = QueryDosDeviceW 288 //sys SetVolumeLabel(rootPathName *uint16, volumeName *uint16) (err error) = SetVolumeLabelW 289 //sys SetVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16) (err error) = SetVolumeMountPointW 290 //sys MessageBox(hwnd Handle, text *uint16, caption *uint16, boxtype uint32) (ret int32, err error) [failretval==0] = user32.MessageBoxW 291 //sys clsidFromString(lpsz *uint16, pclsid *GUID) (ret error) = ole32.CLSIDFromString 292 //sys stringFromGUID2(rguid *GUID, lpsz *uint16, cchMax int32) (chars int32) = ole32.StringFromGUID2 293 //sys coCreateGuid(pguid *GUID) (ret error) = ole32.CoCreateGuid 294 295 // syscall interface implementation for other packages 296 297 // GetProcAddressByOrdinal retrieves the address of the exported 298 // function from module by ordinal. 299 func GetProcAddressByOrdinal(module Handle, ordinal uintptr) (proc uintptr, err error) { 300 r0, _, e1 := syscall.Syscall(procGetProcAddress.Addr(), 2, uintptr(module), ordinal, 0) 301 proc = uintptr(r0) 302 if proc == 0 { 303 if e1 != 0 { 304 err = errnoErr(e1) 305 } else { 306 err = syscall.EINVAL 307 } 308 } 309 return 310 } 311 312 func Exit(code int) { ExitProcess(uint32(code)) } 313 314 func makeInheritSa() *SecurityAttributes { 315 var sa SecurityAttributes 316 sa.Length = uint32(unsafe.Sizeof(sa)) 317 sa.InheritHandle = 1 318 return &sa 319 } 320 321 func Open(path string, mode int, perm uint32) (fd Handle, err error) { 322 if len(path) == 0 { 323 return InvalidHandle, ERROR_FILE_NOT_FOUND 324 } 325 pathp, err := UTF16PtrFromString(path) 326 if err != nil { 327 return InvalidHandle, err 328 } 329 var access uint32 330 switch mode & (O_RDONLY | O_WRONLY | O_RDWR) { 331 case O_RDONLY: 332 access = GENERIC_READ 333 case O_WRONLY: 334 access = GENERIC_WRITE 335 case O_RDWR: 336 access = GENERIC_READ | GENERIC_WRITE 337 } 338 if mode&O_CREAT != 0 { 339 access |= GENERIC_WRITE 340 } 341 if mode&O_APPEND != 0 { 342 access &^= GENERIC_WRITE 343 access |= FILE_APPEND_DATA 344 } 345 sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE) 346 var sa *SecurityAttributes 347 if mode&O_CLOEXEC == 0 { 348 sa = makeInheritSa() 349 } 350 var createmode uint32 351 switch { 352 case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL): 353 createmode = CREATE_NEW 354 case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC): 355 createmode = CREATE_ALWAYS 356 case mode&O_CREAT == O_CREAT: 357 createmode = OPEN_ALWAYS 358 case mode&O_TRUNC == O_TRUNC: 359 createmode = TRUNCATE_EXISTING 360 default: 361 createmode = OPEN_EXISTING 362 } 363 h, e := CreateFile(pathp, access, sharemode, sa, createmode, FILE_ATTRIBUTE_NORMAL, 0) 364 return h, e 365 } 366 367 func Read(fd Handle, p []byte) (n int, err error) { 368 var done uint32 369 e := ReadFile(fd, p, &done, nil) 370 if e != nil { 371 if e == ERROR_BROKEN_PIPE { 372 // NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin 373 return 0, nil 374 } 375 return 0, e 376 } 377 if raceenabled { 378 if done > 0 { 379 raceWriteRange(unsafe.Pointer(&p[0]), int(done)) 380 } 381 raceAcquire(unsafe.Pointer(&ioSync)) 382 } 383 return int(done), nil 384 } 385 386 func Write(fd Handle, p []byte) (n int, err error) { 387 if raceenabled { 388 raceReleaseMerge(unsafe.Pointer(&ioSync)) 389 } 390 var done uint32 391 e := WriteFile(fd, p, &done, nil) 392 if e != nil { 393 return 0, e 394 } 395 if raceenabled && done > 0 { 396 raceReadRange(unsafe.Pointer(&p[0]), int(done)) 397 } 398 return int(done), nil 399 } 400 401 var ioSync int64 402 403 func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) { 404 var w uint32 405 switch whence { 406 case 0: 407 w = FILE_BEGIN 408 case 1: 409 w = FILE_CURRENT 410 case 2: 411 w = FILE_END 412 } 413 hi := int32(offset >> 32) 414 lo := int32(offset) 415 // use GetFileType to check pipe, pipe can't do seek 416 ft, _ := GetFileType(fd) 417 if ft == FILE_TYPE_PIPE { 418 return 0, syscall.EPIPE 419 } 420 rlo, e := SetFilePointer(fd, lo, &hi, w) 421 if e != nil { 422 return 0, e 423 } 424 return int64(hi)<<32 + int64(rlo), nil 425 } 426 427 func Close(fd Handle) (err error) { 428 return CloseHandle(fd) 429 } 430 431 var ( 432 Stdin = getStdHandle(STD_INPUT_HANDLE) 433 Stdout = getStdHandle(STD_OUTPUT_HANDLE) 434 Stderr = getStdHandle(STD_ERROR_HANDLE) 435 ) 436 437 func getStdHandle(stdhandle uint32) (fd Handle) { 438 r, _ := GetStdHandle(stdhandle) 439 CloseOnExec(r) 440 return r 441 } 442 443 const ImplementsGetwd = true 444 445 func Getwd() (wd string, err error) { 446 b := make([]uint16, 300) 447 n, e := GetCurrentDirectory(uint32(len(b)), &b[0]) 448 if e != nil { 449 return "", e 450 } 451 return string(utf16.Decode(b[0:n])), nil 452 } 453 454 func Chdir(path string) (err error) { 455 pathp, err := UTF16PtrFromString(path) 456 if err != nil { 457 return err 458 } 459 return SetCurrentDirectory(pathp) 460 } 461 462 func Mkdir(path string, mode uint32) (err error) { 463 pathp, err := UTF16PtrFromString(path) 464 if err != nil { 465 return err 466 } 467 return CreateDirectory(pathp, nil) 468 } 469 470 func Rmdir(path string) (err error) { 471 pathp, err := UTF16PtrFromString(path) 472 if err != nil { 473 return err 474 } 475 return RemoveDirectory(pathp) 476 } 477 478 func Unlink(path string) (err error) { 479 pathp, err := UTF16PtrFromString(path) 480 if err != nil { 481 return err 482 } 483 return DeleteFile(pathp) 484 } 485 486 func Rename(oldpath, newpath string) (err error) { 487 from, err := UTF16PtrFromString(oldpath) 488 if err != nil { 489 return err 490 } 491 to, err := UTF16PtrFromString(newpath) 492 if err != nil { 493 return err 494 } 495 return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING) 496 } 497 498 func ComputerName() (name string, err error) { 499 var n uint32 = MAX_COMPUTERNAME_LENGTH + 1 500 b := make([]uint16, n) 501 e := GetComputerName(&b[0], &n) 502 if e != nil { 503 return "", e 504 } 505 return string(utf16.Decode(b[0:n])), nil 506 } 507 508 func DurationSinceBoot() time.Duration { 509 return time.Duration(getTickCount64()) * time.Millisecond 510 } 511 512 func Ftruncate(fd Handle, length int64) (err error) { 513 curoffset, e := Seek(fd, 0, 1) 514 if e != nil { 515 return e 516 } 517 defer Seek(fd, curoffset, 0) 518 _, e = Seek(fd, length, 0) 519 if e != nil { 520 return e 521 } 522 e = SetEndOfFile(fd) 523 if e != nil { 524 return e 525 } 526 return nil 527 } 528 529 func Gettimeofday(tv *Timeval) (err error) { 530 var ft Filetime 531 GetSystemTimeAsFileTime(&ft) 532 *tv = NsecToTimeval(ft.Nanoseconds()) 533 return nil 534 } 535 536 func Pipe(p []Handle) (err error) { 537 if len(p) != 2 { 538 return syscall.EINVAL 539 } 540 var r, w Handle 541 e := CreatePipe(&r, &w, makeInheritSa(), 0) 542 if e != nil { 543 return e 544 } 545 p[0] = r 546 p[1] = w 547 return nil 548 } 549 550 func Utimes(path string, tv []Timeval) (err error) { 551 if len(tv) != 2 { 552 return syscall.EINVAL 553 } 554 pathp, e := UTF16PtrFromString(path) 555 if e != nil { 556 return e 557 } 558 h, e := CreateFile(pathp, 559 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, 560 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) 561 if e != nil { 562 return e 563 } 564 defer Close(h) 565 a := NsecToFiletime(tv[0].Nanoseconds()) 566 w := NsecToFiletime(tv[1].Nanoseconds()) 567 return SetFileTime(h, nil, &a, &w) 568 } 569 570 func UtimesNano(path string, ts []Timespec) (err error) { 571 if len(ts) != 2 { 572 return syscall.EINVAL 573 } 574 pathp, e := UTF16PtrFromString(path) 575 if e != nil { 576 return e 577 } 578 h, e := CreateFile(pathp, 579 FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, 580 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) 581 if e != nil { 582 return e 583 } 584 defer Close(h) 585 a := NsecToFiletime(TimespecToNsec(ts[0])) 586 w := NsecToFiletime(TimespecToNsec(ts[1])) 587 return SetFileTime(h, nil, &a, &w) 588 } 589 590 func Fsync(fd Handle) (err error) { 591 return FlushFileBuffers(fd) 592 } 593 594 func Chmod(path string, mode uint32) (err error) { 595 p, e := UTF16PtrFromString(path) 596 if e != nil { 597 return e 598 } 599 attrs, e := GetFileAttributes(p) 600 if e != nil { 601 return e 602 } 603 if mode&S_IWRITE != 0 { 604 attrs &^= FILE_ATTRIBUTE_READONLY 605 } else { 606 attrs |= FILE_ATTRIBUTE_READONLY 607 } 608 return SetFileAttributes(p, attrs) 609 } 610 611 func LoadGetSystemTimePreciseAsFileTime() error { 612 return procGetSystemTimePreciseAsFileTime.Find() 613 } 614 615 func LoadCancelIoEx() error { 616 return procCancelIoEx.Find() 617 } 618 619 func LoadSetFileCompletionNotificationModes() error { 620 return procSetFileCompletionNotificationModes.Find() 621 } 622 623 func WaitForMultipleObjects(handles []Handle, waitAll bool, waitMilliseconds uint32) (event uint32, err error) { 624 // Every other win32 array API takes arguments as "pointer, count", except for this function. So we 625 // can't declare it as a usual [] type, because mksyscall will use the opposite order. We therefore 626 // trivially stub this ourselves. 627 628 var handlePtr *Handle 629 if len(handles) > 0 { 630 handlePtr = &handles[0] 631 } 632 return waitForMultipleObjects(uint32(len(handles)), uintptr(unsafe.Pointer(handlePtr)), waitAll, waitMilliseconds) 633 } 634 635 // net api calls 636 637 const socket_error = uintptr(^uint32(0)) 638 639 //sys WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup 640 //sys WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup 641 //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 642 //sys socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket 643 //sys Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt 644 //sys Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt 645 //sys bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind 646 //sys connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect 647 //sys getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname 648 //sys getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername 649 //sys listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen 650 //sys shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown 651 //sys Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket 652 //sys AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx 653 //sys GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs 654 //sys WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv 655 //sys WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend 656 //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 657 //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 658 //sys GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname 659 //sys GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname 660 //sys Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs 661 //sys GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname 662 //sys DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W 663 //sys DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree 664 //sys DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W 665 //sys GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW 666 //sys FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW 667 //sys GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry 668 //sys GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo 669 //sys SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes 670 //sys WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW 671 //sys GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses 672 //sys GetACP() (acp uint32) = kernel32.GetACP 673 //sys MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar 674 675 // For testing: clients can set this flag to force 676 // creation of IPv6 sockets to return EAFNOSUPPORT. 677 var SocketDisableIPv6 bool 678 679 type RawSockaddrInet4 struct { 680 Family uint16 681 Port uint16 682 Addr [4]byte /* in_addr */ 683 Zero [8]uint8 684 } 685 686 type RawSockaddrInet6 struct { 687 Family uint16 688 Port uint16 689 Flowinfo uint32 690 Addr [16]byte /* in6_addr */ 691 Scope_id uint32 692 } 693 694 type RawSockaddr struct { 695 Family uint16 696 Data [14]int8 697 } 698 699 type RawSockaddrAny struct { 700 Addr RawSockaddr 701 Pad [100]int8 702 } 703 704 type Sockaddr interface { 705 sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs 706 } 707 708 type SockaddrInet4 struct { 709 Port int 710 Addr [4]byte 711 raw RawSockaddrInet4 712 } 713 714 func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) { 715 if sa.Port < 0 || sa.Port > 0xFFFF { 716 return nil, 0, syscall.EINVAL 717 } 718 sa.raw.Family = AF_INET 719 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 720 p[0] = byte(sa.Port >> 8) 721 p[1] = byte(sa.Port) 722 for i := 0; i < len(sa.Addr); i++ { 723 sa.raw.Addr[i] = sa.Addr[i] 724 } 725 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil 726 } 727 728 type SockaddrInet6 struct { 729 Port int 730 ZoneId uint32 731 Addr [16]byte 732 raw RawSockaddrInet6 733 } 734 735 func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) { 736 if sa.Port < 0 || sa.Port > 0xFFFF { 737 return nil, 0, syscall.EINVAL 738 } 739 sa.raw.Family = AF_INET6 740 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 741 p[0] = byte(sa.Port >> 8) 742 p[1] = byte(sa.Port) 743 sa.raw.Scope_id = sa.ZoneId 744 for i := 0; i < len(sa.Addr); i++ { 745 sa.raw.Addr[i] = sa.Addr[i] 746 } 747 return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil 748 } 749 750 type RawSockaddrUnix struct { 751 Family uint16 752 Path [UNIX_PATH_MAX]int8 753 } 754 755 type SockaddrUnix struct { 756 Name string 757 raw RawSockaddrUnix 758 } 759 760 func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) { 761 name := sa.Name 762 n := len(name) 763 if n > len(sa.raw.Path) { 764 return nil, 0, syscall.EINVAL 765 } 766 if n == len(sa.raw.Path) && name[0] != '@' { 767 return nil, 0, syscall.EINVAL 768 } 769 sa.raw.Family = AF_UNIX 770 for i := 0; i < n; i++ { 771 sa.raw.Path[i] = int8(name[i]) 772 } 773 // length is family (uint16), name, NUL. 774 sl := int32(2) 775 if n > 0 { 776 sl += int32(n) + 1 777 } 778 if sa.raw.Path[0] == '@' { 779 sa.raw.Path[0] = 0 780 // Don't count trailing NUL for abstract address. 781 sl-- 782 } 783 784 return unsafe.Pointer(&sa.raw), sl, nil 785 } 786 787 func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) { 788 switch rsa.Addr.Family { 789 case AF_UNIX: 790 pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) 791 sa := new(SockaddrUnix) 792 if pp.Path[0] == 0 { 793 // "Abstract" Unix domain socket. 794 // Rewrite leading NUL as @ for textual display. 795 // (This is the standard convention.) 796 // Not friendly to overwrite in place, 797 // but the callers below don't care. 798 pp.Path[0] = '@' 799 } 800 801 // Assume path ends at NUL. 802 // This is not technically the Linux semantics for 803 // abstract Unix domain sockets--they are supposed 804 // to be uninterpreted fixed-size binary blobs--but 805 // everyone uses this convention. 806 n := 0 807 for n < len(pp.Path) && pp.Path[n] != 0 { 808 n++ 809 } 810 bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n] 811 sa.Name = string(bytes) 812 return sa, nil 813 814 case AF_INET: 815 pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) 816 sa := new(SockaddrInet4) 817 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 818 sa.Port = int(p[0])<<8 + int(p[1]) 819 for i := 0; i < len(sa.Addr); i++ { 820 sa.Addr[i] = pp.Addr[i] 821 } 822 return sa, nil 823 824 case AF_INET6: 825 pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) 826 sa := new(SockaddrInet6) 827 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 828 sa.Port = int(p[0])<<8 + int(p[1]) 829 sa.ZoneId = pp.Scope_id 830 for i := 0; i < len(sa.Addr); i++ { 831 sa.Addr[i] = pp.Addr[i] 832 } 833 return sa, nil 834 } 835 return nil, syscall.EAFNOSUPPORT 836 } 837 838 func Socket(domain, typ, proto int) (fd Handle, err error) { 839 if domain == AF_INET6 && SocketDisableIPv6 { 840 return InvalidHandle, syscall.EAFNOSUPPORT 841 } 842 return socket(int32(domain), int32(typ), int32(proto)) 843 } 844 845 func SetsockoptInt(fd Handle, level, opt int, value int) (err error) { 846 v := int32(value) 847 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v))) 848 } 849 850 func Bind(fd Handle, sa Sockaddr) (err error) { 851 ptr, n, err := sa.sockaddr() 852 if err != nil { 853 return err 854 } 855 return bind(fd, ptr, n) 856 } 857 858 func Connect(fd Handle, sa Sockaddr) (err error) { 859 ptr, n, err := sa.sockaddr() 860 if err != nil { 861 return err 862 } 863 return connect(fd, ptr, n) 864 } 865 866 func Getsockname(fd Handle) (sa Sockaddr, err error) { 867 var rsa RawSockaddrAny 868 l := int32(unsafe.Sizeof(rsa)) 869 if err = getsockname(fd, &rsa, &l); err != nil { 870 return 871 } 872 return rsa.Sockaddr() 873 } 874 875 func Getpeername(fd Handle) (sa Sockaddr, err error) { 876 var rsa RawSockaddrAny 877 l := int32(unsafe.Sizeof(rsa)) 878 if err = getpeername(fd, &rsa, &l); err != nil { 879 return 880 } 881 return rsa.Sockaddr() 882 } 883 884 func Listen(s Handle, n int) (err error) { 885 return listen(s, int32(n)) 886 } 887 888 func Shutdown(fd Handle, how int) (err error) { 889 return shutdown(fd, int32(how)) 890 } 891 892 func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) { 893 rsa, l, err := to.sockaddr() 894 if err != nil { 895 return err 896 } 897 return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine) 898 } 899 900 func LoadGetAddrInfo() error { 901 return procGetAddrInfoW.Find() 902 } 903 904 var connectExFunc struct { 905 once sync.Once 906 addr uintptr 907 err error 908 } 909 910 func LoadConnectEx() error { 911 connectExFunc.once.Do(func() { 912 var s Handle 913 s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) 914 if connectExFunc.err != nil { 915 return 916 } 917 defer CloseHandle(s) 918 var n uint32 919 connectExFunc.err = WSAIoctl(s, 920 SIO_GET_EXTENSION_FUNCTION_POINTER, 921 (*byte)(unsafe.Pointer(&WSAID_CONNECTEX)), 922 uint32(unsafe.Sizeof(WSAID_CONNECTEX)), 923 (*byte)(unsafe.Pointer(&connectExFunc.addr)), 924 uint32(unsafe.Sizeof(connectExFunc.addr)), 925 &n, nil, 0) 926 }) 927 return connectExFunc.err 928 } 929 930 func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) { 931 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) 932 if r1 == 0 { 933 if e1 != 0 { 934 err = error(e1) 935 } else { 936 err = syscall.EINVAL 937 } 938 } 939 return 940 } 941 942 func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error { 943 err := LoadConnectEx() 944 if err != nil { 945 return errorspkg.New("failed to find ConnectEx: " + err.Error()) 946 } 947 ptr, n, err := sa.sockaddr() 948 if err != nil { 949 return err 950 } 951 return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped) 952 } 953 954 var sendRecvMsgFunc struct { 955 once sync.Once 956 sendAddr uintptr 957 recvAddr uintptr 958 err error 959 } 960 961 func loadWSASendRecvMsg() error { 962 sendRecvMsgFunc.once.Do(func() { 963 var s Handle 964 s, sendRecvMsgFunc.err = Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) 965 if sendRecvMsgFunc.err != nil { 966 return 967 } 968 defer CloseHandle(s) 969 var n uint32 970 sendRecvMsgFunc.err = WSAIoctl(s, 971 SIO_GET_EXTENSION_FUNCTION_POINTER, 972 (*byte)(unsafe.Pointer(&WSAID_WSARECVMSG)), 973 uint32(unsafe.Sizeof(WSAID_WSARECVMSG)), 974 (*byte)(unsafe.Pointer(&sendRecvMsgFunc.recvAddr)), 975 uint32(unsafe.Sizeof(sendRecvMsgFunc.recvAddr)), 976 &n, nil, 0) 977 if sendRecvMsgFunc.err != nil { 978 return 979 } 980 sendRecvMsgFunc.err = WSAIoctl(s, 981 SIO_GET_EXTENSION_FUNCTION_POINTER, 982 (*byte)(unsafe.Pointer(&WSAID_WSASENDMSG)), 983 uint32(unsafe.Sizeof(WSAID_WSASENDMSG)), 984 (*byte)(unsafe.Pointer(&sendRecvMsgFunc.sendAddr)), 985 uint32(unsafe.Sizeof(sendRecvMsgFunc.sendAddr)), 986 &n, nil, 0) 987 }) 988 return sendRecvMsgFunc.err 989 } 990 991 func WSASendMsg(fd Handle, msg *WSAMsg, flags uint32, bytesSent *uint32, overlapped *Overlapped, croutine *byte) error { 992 err := loadWSASendRecvMsg() 993 if err != nil { 994 return err 995 } 996 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))) 997 if r1 == socket_error { 998 if e1 != 0 { 999 err = errnoErr(e1) 1000 } else { 1001 err = syscall.EINVAL 1002 } 1003 } 1004 return err 1005 } 1006 1007 func WSARecvMsg(fd Handle, msg *WSAMsg, bytesReceived *uint32, overlapped *Overlapped, croutine *byte) error { 1008 err := loadWSASendRecvMsg() 1009 if err != nil { 1010 return err 1011 } 1012 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) 1013 if r1 == socket_error { 1014 if e1 != 0 { 1015 err = errnoErr(e1) 1016 } else { 1017 err = syscall.EINVAL 1018 } 1019 } 1020 return err 1021 } 1022 1023 // Invented structures to support what package os expects. 1024 type Rusage struct { 1025 CreationTime Filetime 1026 ExitTime Filetime 1027 KernelTime Filetime 1028 UserTime Filetime 1029 } 1030 1031 type WaitStatus struct { 1032 ExitCode uint32 1033 } 1034 1035 func (w WaitStatus) Exited() bool { return true } 1036 1037 func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) } 1038 1039 func (w WaitStatus) Signal() Signal { return -1 } 1040 1041 func (w WaitStatus) CoreDump() bool { return false } 1042 1043 func (w WaitStatus) Stopped() bool { return false } 1044 1045 func (w WaitStatus) Continued() bool { return false } 1046 1047 func (w WaitStatus) StopSignal() Signal { return -1 } 1048 1049 func (w WaitStatus) Signaled() bool { return false } 1050 1051 func (w WaitStatus) TrapCause() int { return -1 } 1052 1053 // Timespec is an invented structure on Windows, but here for 1054 // consistency with the corresponding package for other operating systems. 1055 type Timespec struct { 1056 Sec int64 1057 Nsec int64 1058 } 1059 1060 func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } 1061 1062 func NsecToTimespec(nsec int64) (ts Timespec) { 1063 ts.Sec = nsec / 1e9 1064 ts.Nsec = nsec % 1e9 1065 return 1066 } 1067 1068 // TODO(brainman): fix all needed for net 1069 1070 func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS } 1071 func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) { 1072 return 0, nil, syscall.EWINDOWS 1073 } 1074 func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) { return syscall.EWINDOWS } 1075 func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS } 1076 1077 // The Linger struct is wrong but we only noticed after Go 1. 1078 // sysLinger is the real system call structure. 1079 1080 // BUG(brainman): The definition of Linger is not appropriate for direct use 1081 // with Setsockopt and Getsockopt. 1082 // Use SetsockoptLinger instead. 1083 1084 type Linger struct { 1085 Onoff int32 1086 Linger int32 1087 } 1088 1089 type sysLinger struct { 1090 Onoff uint16 1091 Linger uint16 1092 } 1093 1094 type IPMreq struct { 1095 Multiaddr [4]byte /* in_addr */ 1096 Interface [4]byte /* in_addr */ 1097 } 1098 1099 type IPv6Mreq struct { 1100 Multiaddr [16]byte /* in6_addr */ 1101 Interface uint32 1102 } 1103 1104 func GetsockoptInt(fd Handle, level, opt int) (int, error) { return -1, syscall.EWINDOWS } 1105 1106 func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) { 1107 sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)} 1108 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys))) 1109 } 1110 1111 func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) { 1112 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4) 1113 } 1114 func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) { 1115 return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq))) 1116 } 1117 func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) { 1118 return syscall.EWINDOWS 1119 } 1120 1121 func Getpid() (pid int) { return int(GetCurrentProcessId()) } 1122 1123 func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) { 1124 // NOTE(rsc): The Win32finddata struct is wrong for the system call: 1125 // the two paths are each one uint16 short. Use the correct struct, 1126 // a win32finddata1, and then copy the results out. 1127 // There is no loss of expressivity here, because the final 1128 // uint16, if it is used, is supposed to be a NUL, and Go doesn't need that. 1129 // For Go 1.1, we might avoid the allocation of win32finddata1 here 1130 // by adding a final Bug [2]uint16 field to the struct and then 1131 // adjusting the fields in the result directly. 1132 var data1 win32finddata1 1133 handle, err = findFirstFile1(name, &data1) 1134 if err == nil { 1135 copyFindData(data, &data1) 1136 } 1137 return 1138 } 1139 1140 func FindNextFile(handle Handle, data *Win32finddata) (err error) { 1141 var data1 win32finddata1 1142 err = findNextFile1(handle, &data1) 1143 if err == nil { 1144 copyFindData(data, &data1) 1145 } 1146 return 1147 } 1148 1149 func getProcessEntry(pid int) (*ProcessEntry32, error) { 1150 snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) 1151 if err != nil { 1152 return nil, err 1153 } 1154 defer CloseHandle(snapshot) 1155 var procEntry ProcessEntry32 1156 procEntry.Size = uint32(unsafe.Sizeof(procEntry)) 1157 if err = Process32First(snapshot, &procEntry); err != nil { 1158 return nil, err 1159 } 1160 for { 1161 if procEntry.ProcessID == uint32(pid) { 1162 return &procEntry, nil 1163 } 1164 err = Process32Next(snapshot, &procEntry) 1165 if err != nil { 1166 return nil, err 1167 } 1168 } 1169 } 1170 1171 func Getppid() (ppid int) { 1172 pe, err := getProcessEntry(Getpid()) 1173 if err != nil { 1174 return -1 1175 } 1176 return int(pe.ParentProcessID) 1177 } 1178 1179 // TODO(brainman): fix all needed for os 1180 func Fchdir(fd Handle) (err error) { return syscall.EWINDOWS } 1181 func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS } 1182 func Symlink(path, link string) (err error) { return syscall.EWINDOWS } 1183 1184 func Fchmod(fd Handle, mode uint32) (err error) { return syscall.EWINDOWS } 1185 func Chown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } 1186 func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } 1187 func Fchown(fd Handle, uid int, gid int) (err error) { return syscall.EWINDOWS } 1188 1189 func Getuid() (uid int) { return -1 } 1190 func Geteuid() (euid int) { return -1 } 1191 func Getgid() (gid int) { return -1 } 1192 func Getegid() (egid int) { return -1 } 1193 func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS } 1194 1195 type Signal int 1196 1197 func (s Signal) Signal() {} 1198 1199 func (s Signal) String() string { 1200 if 0 <= s && int(s) < len(signals) { 1201 str := signals[s] 1202 if str != "" { 1203 return str 1204 } 1205 } 1206 return "signal " + itoa(int(s)) 1207 } 1208 1209 func LoadCreateSymbolicLink() error { 1210 return procCreateSymbolicLinkW.Find() 1211 } 1212 1213 // Readlink returns the destination of the named symbolic link. 1214 func Readlink(path string, buf []byte) (n int, err error) { 1215 fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING, 1216 FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0) 1217 if err != nil { 1218 return -1, err 1219 } 1220 defer CloseHandle(fd) 1221 1222 rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE) 1223 var bytesReturned uint32 1224 err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil) 1225 if err != nil { 1226 return -1, err 1227 } 1228 1229 rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0])) 1230 var s string 1231 switch rdb.ReparseTag { 1232 case IO_REPARSE_TAG_SYMLINK: 1233 data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) 1234 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) 1235 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) 1236 case IO_REPARSE_TAG_MOUNT_POINT: 1237 data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) 1238 p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) 1239 s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) 1240 default: 1241 // the path is not a symlink or junction but another type of reparse 1242 // point 1243 return -1, syscall.ENOENT 1244 } 1245 n = copy(buf, []byte(s)) 1246 1247 return n, nil 1248 } 1249 1250 // GUIDFromString parses a string in the form of 1251 // "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}" into a GUID. 1252 func GUIDFromString(str string) (GUID, error) { 1253 guid := GUID{} 1254 str16, err := syscall.UTF16PtrFromString(str) 1255 if err != nil { 1256 return guid, err 1257 } 1258 err = clsidFromString(str16, &guid) 1259 if err != nil { 1260 return guid, err 1261 } 1262 return guid, nil 1263 } 1264 1265 // GenerateGUID creates a new random GUID. 1266 func GenerateGUID() (GUID, error) { 1267 guid := GUID{} 1268 err := coCreateGuid(&guid) 1269 if err != nil { 1270 return guid, err 1271 } 1272 return guid, nil 1273 } 1274 1275 // String returns the canonical string form of the GUID, 1276 // in the form of "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}". 1277 func (guid GUID) String() string { 1278 var str [100]uint16 1279 chars := stringFromGUID2(&guid, &str[0], int32(len(str))) 1280 if chars <= 1 { 1281 return "" 1282 } 1283 return string(utf16.Decode(str[:chars-1])) 1284 }