David K. Bainbridge | 215e024 | 2017-09-05 23:18:24 -0700 | [diff] [blame] | 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 | "unicode/utf16" |
| 14 | "unsafe" |
| 15 | ) |
| 16 | |
| 17 | type Handle uintptr |
| 18 | |
| 19 | const InvalidHandle = ^Handle(0) |
| 20 | |
| 21 | // StringToUTF16 is deprecated. Use UTF16FromString instead. |
| 22 | // If s contains a NUL byte this function panics instead of |
| 23 | // returning an error. |
| 24 | func StringToUTF16(s string) []uint16 { |
| 25 | a, err := UTF16FromString(s) |
| 26 | if err != nil { |
| 27 | panic("windows: string with NUL passed to StringToUTF16") |
| 28 | } |
| 29 | return a |
| 30 | } |
| 31 | |
| 32 | // UTF16FromString returns the UTF-16 encoding of the UTF-8 string |
| 33 | // s, with a terminating NUL added. If s contains a NUL byte at any |
| 34 | // location, it returns (nil, syscall.EINVAL). |
| 35 | func UTF16FromString(s string) ([]uint16, error) { |
| 36 | for i := 0; i < len(s); i++ { |
| 37 | if s[i] == 0 { |
| 38 | return nil, syscall.EINVAL |
| 39 | } |
| 40 | } |
| 41 | return utf16.Encode([]rune(s + "\x00")), nil |
| 42 | } |
| 43 | |
| 44 | // UTF16ToString returns the UTF-8 encoding of the UTF-16 sequence s, |
| 45 | // with a terminating NUL removed. |
| 46 | func UTF16ToString(s []uint16) string { |
| 47 | for i, v := range s { |
| 48 | if v == 0 { |
| 49 | s = s[0:i] |
| 50 | break |
| 51 | } |
| 52 | } |
| 53 | return string(utf16.Decode(s)) |
| 54 | } |
| 55 | |
| 56 | // StringToUTF16Ptr is deprecated. Use UTF16PtrFromString instead. |
| 57 | // If s contains a NUL byte this function panics instead of |
| 58 | // returning an error. |
| 59 | func StringToUTF16Ptr(s string) *uint16 { return &StringToUTF16(s)[0] } |
| 60 | |
| 61 | // UTF16PtrFromString returns pointer to the UTF-16 encoding of |
| 62 | // the UTF-8 string s, with a terminating NUL added. If s |
| 63 | // contains a NUL byte at any location, it returns (nil, syscall.EINVAL). |
| 64 | func UTF16PtrFromString(s string) (*uint16, error) { |
| 65 | a, err := UTF16FromString(s) |
| 66 | if err != nil { |
| 67 | return nil, err |
| 68 | } |
| 69 | return &a[0], nil |
| 70 | } |
| 71 | |
| 72 | func Getpagesize() int { return 4096 } |
| 73 | |
| 74 | // Converts a Go function to a function pointer conforming |
| 75 | // to the stdcall or cdecl calling convention. This is useful when |
| 76 | // interoperating with Windows code requiring callbacks. |
| 77 | // Implemented in runtime/syscall_windows.goc |
| 78 | func NewCallback(fn interface{}) uintptr |
| 79 | func NewCallbackCDecl(fn interface{}) uintptr |
| 80 | |
| 81 | // windows api calls |
| 82 | |
| 83 | //sys GetLastError() (lasterr error) |
| 84 | //sys LoadLibrary(libname string) (handle Handle, err error) = LoadLibraryW |
| 85 | //sys LoadLibraryEx(libname string, zero Handle, flags uintptr) (handle Handle, err error) = LoadLibraryExW |
| 86 | //sys FreeLibrary(handle Handle) (err error) |
| 87 | //sys GetProcAddress(module Handle, procname string) (proc uintptr, err error) |
| 88 | //sys GetVersion() (ver uint32, err error) |
| 89 | //sys FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW |
| 90 | //sys ExitProcess(exitcode uint32) |
| 91 | //sys CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile int32) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW |
| 92 | //sys ReadFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) |
| 93 | //sys WriteFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) |
| 94 | //sys SetFilePointer(handle Handle, lowoffset int32, highoffsetptr *int32, whence uint32) (newlowoffset uint32, err error) [failretval==0xffffffff] |
| 95 | //sys CloseHandle(handle Handle) (err error) |
| 96 | //sys GetStdHandle(stdhandle uint32) (handle Handle, err error) [failretval==InvalidHandle] |
| 97 | //sys SetStdHandle(stdhandle uint32, handle Handle) (err error) |
| 98 | //sys findFirstFile1(name *uint16, data *win32finddata1) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstFileW |
| 99 | //sys findNextFile1(handle Handle, data *win32finddata1) (err error) = FindNextFileW |
| 100 | //sys FindClose(handle Handle) (err error) |
| 101 | //sys GetFileInformationByHandle(handle Handle, data *ByHandleFileInformation) (err error) |
| 102 | //sys GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, err error) = GetCurrentDirectoryW |
| 103 | //sys SetCurrentDirectory(path *uint16) (err error) = SetCurrentDirectoryW |
| 104 | //sys CreateDirectory(path *uint16, sa *SecurityAttributes) (err error) = CreateDirectoryW |
| 105 | //sys RemoveDirectory(path *uint16) (err error) = RemoveDirectoryW |
| 106 | //sys DeleteFile(path *uint16) (err error) = DeleteFileW |
| 107 | //sys MoveFile(from *uint16, to *uint16) (err error) = MoveFileW |
| 108 | //sys MoveFileEx(from *uint16, to *uint16, flags uint32) (err error) = MoveFileExW |
| 109 | //sys GetComputerName(buf *uint16, n *uint32) (err error) = GetComputerNameW |
| 110 | //sys GetComputerNameEx(nametype uint32, buf *uint16, n *uint32) (err error) = GetComputerNameExW |
| 111 | //sys SetEndOfFile(handle Handle) (err error) |
| 112 | //sys GetSystemTimeAsFileTime(time *Filetime) |
| 113 | //sys GetSystemTimePreciseAsFileTime(time *Filetime) |
| 114 | //sys GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff] |
| 115 | //sys CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uint32, threadcnt uint32) (handle Handle, err error) |
| 116 | //sys GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uint32, overlapped **Overlapped, timeout uint32) (err error) |
| 117 | //sys PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uint32, overlapped *Overlapped) (err error) |
| 118 | //sys CancelIo(s Handle) (err error) |
| 119 | //sys CancelIoEx(s Handle, o *Overlapped) (err error) |
| 120 | //sys CreateProcess(appName *uint16, commandLine *uint16, procSecurity *SecurityAttributes, threadSecurity *SecurityAttributes, inheritHandles bool, creationFlags uint32, env *uint16, currentDir *uint16, startupInfo *StartupInfo, outProcInfo *ProcessInformation) (err error) = CreateProcessW |
| 121 | //sys OpenProcess(da uint32, inheritHandle bool, pid uint32) (handle Handle, err error) |
| 122 | //sys TerminateProcess(handle Handle, exitcode uint32) (err error) |
| 123 | //sys GetExitCodeProcess(handle Handle, exitcode *uint32) (err error) |
| 124 | //sys GetStartupInfo(startupInfo *StartupInfo) (err error) = GetStartupInfoW |
| 125 | //sys GetCurrentProcess() (pseudoHandle Handle, err error) |
| 126 | //sys GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error) |
| 127 | //sys DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error) |
| 128 | //sys WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] |
| 129 | //sys GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW |
| 130 | //sys CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error) |
| 131 | //sys GetFileType(filehandle Handle) (n uint32, err error) |
| 132 | //sys CryptAcquireContext(provhandle *Handle, container *uint16, provider *uint16, provtype uint32, flags uint32) (err error) = advapi32.CryptAcquireContextW |
| 133 | //sys CryptReleaseContext(provhandle Handle, flags uint32) (err error) = advapi32.CryptReleaseContext |
| 134 | //sys CryptGenRandom(provhandle Handle, buflen uint32, buf *byte) (err error) = advapi32.CryptGenRandom |
| 135 | //sys GetEnvironmentStrings() (envs *uint16, err error) [failretval==nil] = kernel32.GetEnvironmentStringsW |
| 136 | //sys FreeEnvironmentStrings(envs *uint16) (err error) = kernel32.FreeEnvironmentStringsW |
| 137 | //sys GetEnvironmentVariable(name *uint16, buffer *uint16, size uint32) (n uint32, err error) = kernel32.GetEnvironmentVariableW |
| 138 | //sys SetEnvironmentVariable(name *uint16, value *uint16) (err error) = kernel32.SetEnvironmentVariableW |
| 139 | //sys SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error) |
| 140 | //sys GetFileAttributes(name *uint16) (attrs uint32, err error) [failretval==INVALID_FILE_ATTRIBUTES] = kernel32.GetFileAttributesW |
| 141 | //sys SetFileAttributes(name *uint16, attrs uint32) (err error) = kernel32.SetFileAttributesW |
| 142 | //sys GetFileAttributesEx(name *uint16, level uint32, info *byte) (err error) = kernel32.GetFileAttributesExW |
| 143 | //sys GetCommandLine() (cmd *uint16) = kernel32.GetCommandLineW |
| 144 | //sys CommandLineToArgv(cmd *uint16, argc *int32) (argv *[8192]*[8192]uint16, err error) [failretval==nil] = shell32.CommandLineToArgvW |
| 145 | //sys LocalFree(hmem Handle) (handle Handle, err error) [failretval!=0] |
| 146 | //sys SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error) |
| 147 | //sys FlushFileBuffers(handle Handle) (err error) |
| 148 | //sys GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, err error) = kernel32.GetFullPathNameW |
| 149 | //sys GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err error) = kernel32.GetLongPathNameW |
| 150 | //sys GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW |
| 151 | //sys CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) = kernel32.CreateFileMappingW |
| 152 | //sys MapViewOfFile(handle Handle, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, err error) |
| 153 | //sys UnmapViewOfFile(addr uintptr) (err error) |
| 154 | //sys FlushViewOfFile(addr uintptr, length uintptr) (err error) |
| 155 | //sys VirtualLock(addr uintptr, length uintptr) (err error) |
| 156 | //sys VirtualUnlock(addr uintptr, length uintptr) (err error) |
| 157 | //sys VirtualAlloc(address uintptr, size uintptr, alloctype uint32, protect uint32) (value uintptr, err error) = kernel32.VirtualAlloc |
| 158 | //sys VirtualFree(address uintptr, size uintptr, freetype uint32) (err error) = kernel32.VirtualFree |
| 159 | //sys VirtualProtect(address uintptr, size uintptr, newprotect uint32, oldprotect *uint32) (err error) = kernel32.VirtualProtect |
| 160 | //sys TransmitFile(s Handle, handle Handle, bytesToWrite uint32, bytsPerSend uint32, overlapped *Overlapped, transmitFileBuf *TransmitFileBuffers, flags uint32) (err error) = mswsock.TransmitFile |
| 161 | //sys ReadDirectoryChanges(handle Handle, buf *byte, buflen uint32, watchSubTree bool, mask uint32, retlen *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) = kernel32.ReadDirectoryChangesW |
| 162 | //sys CertOpenSystemStore(hprov Handle, name *uint16) (store Handle, err error) = crypt32.CertOpenSystemStoreW |
| 163 | //sys CertOpenStore(storeProvider uintptr, msgAndCertEncodingType uint32, cryptProv uintptr, flags uint32, para uintptr) (handle Handle, err error) [failretval==InvalidHandle] = crypt32.CertOpenStore |
| 164 | //sys CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) [failretval==nil] = crypt32.CertEnumCertificatesInStore |
| 165 | //sys CertAddCertificateContextToStore(store Handle, certContext *CertContext, addDisposition uint32, storeContext **CertContext) (err error) = crypt32.CertAddCertificateContextToStore |
| 166 | //sys CertCloseStore(store Handle, flags uint32) (err error) = crypt32.CertCloseStore |
| 167 | //sys CertGetCertificateChain(engine Handle, leaf *CertContext, time *Filetime, additionalStore Handle, para *CertChainPara, flags uint32, reserved uintptr, chainCtx **CertChainContext) (err error) = crypt32.CertGetCertificateChain |
| 168 | //sys CertFreeCertificateChain(ctx *CertChainContext) = crypt32.CertFreeCertificateChain |
| 169 | //sys CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, encodedLen uint32) (context *CertContext, err error) [failretval==nil] = crypt32.CertCreateCertificateContext |
| 170 | //sys CertFreeCertificateContext(ctx *CertContext) (err error) = crypt32.CertFreeCertificateContext |
| 171 | //sys CertVerifyCertificateChainPolicy(policyOID uintptr, chain *CertChainContext, para *CertChainPolicyPara, status *CertChainPolicyStatus) (err error) = crypt32.CertVerifyCertificateChainPolicy |
| 172 | //sys RegOpenKeyEx(key Handle, subkey *uint16, options uint32, desiredAccess uint32, result *Handle) (regerrno error) = advapi32.RegOpenKeyExW |
| 173 | //sys RegCloseKey(key Handle) (regerrno error) = advapi32.RegCloseKey |
| 174 | //sys RegQueryInfoKey(key Handle, class *uint16, classLen *uint32, reserved *uint32, subkeysLen *uint32, maxSubkeyLen *uint32, maxClassLen *uint32, valuesLen *uint32, maxValueNameLen *uint32, maxValueLen *uint32, saLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegQueryInfoKeyW |
| 175 | //sys RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW |
| 176 | //sys RegQueryValueEx(key Handle, name *uint16, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegQueryValueExW |
| 177 | //sys getCurrentProcessId() (pid uint32) = kernel32.GetCurrentProcessId |
| 178 | //sys GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode |
| 179 | //sys SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode |
| 180 | //sys GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo |
| 181 | //sys WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW |
| 182 | //sys ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW |
| 183 | //sys CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot |
| 184 | //sys Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32FirstW |
| 185 | //sys Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32NextW |
| 186 | //sys DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBufferSize uint32, outBuffer *byte, outBufferSize uint32, bytesReturned *uint32, overlapped *Overlapped) (err error) |
| 187 | // This function returns 1 byte BOOLEAN rather than the 4 byte BOOL. |
| 188 | //sys CreateSymbolicLink(symlinkfilename *uint16, targetfilename *uint16, flags uint32) (err error) [failretval&0xff==0] = CreateSymbolicLinkW |
| 189 | //sys CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr) (err error) [failretval&0xff==0] = CreateHardLinkW |
| 190 | //sys GetCurrentThreadId() (id uint32) |
| 191 | //sys CreateEvent(eventAttrs *SecurityAttributes, manualReset uint32, initialState uint32, name *uint16) (handle Handle, err error) = kernel32.CreateEventW |
| 192 | //sys CreateEventEx(eventAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) = kernel32.CreateEventExW |
| 193 | //sys OpenEvent(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenEventW |
| 194 | //sys SetEvent(event Handle) (err error) = kernel32.SetEvent |
| 195 | //sys ResetEvent(event Handle) (err error) = kernel32.ResetEvent |
| 196 | //sys PulseEvent(event Handle) (err error) = kernel32.PulseEvent |
| 197 | |
| 198 | // syscall interface implementation for other packages |
| 199 | |
| 200 | func Exit(code int) { ExitProcess(uint32(code)) } |
| 201 | |
| 202 | func makeInheritSa() *SecurityAttributes { |
| 203 | var sa SecurityAttributes |
| 204 | sa.Length = uint32(unsafe.Sizeof(sa)) |
| 205 | sa.InheritHandle = 1 |
| 206 | return &sa |
| 207 | } |
| 208 | |
| 209 | func Open(path string, mode int, perm uint32) (fd Handle, err error) { |
| 210 | if len(path) == 0 { |
| 211 | return InvalidHandle, ERROR_FILE_NOT_FOUND |
| 212 | } |
| 213 | pathp, err := UTF16PtrFromString(path) |
| 214 | if err != nil { |
| 215 | return InvalidHandle, err |
| 216 | } |
| 217 | var access uint32 |
| 218 | switch mode & (O_RDONLY | O_WRONLY | O_RDWR) { |
| 219 | case O_RDONLY: |
| 220 | access = GENERIC_READ |
| 221 | case O_WRONLY: |
| 222 | access = GENERIC_WRITE |
| 223 | case O_RDWR: |
| 224 | access = GENERIC_READ | GENERIC_WRITE |
| 225 | } |
| 226 | if mode&O_CREAT != 0 { |
| 227 | access |= GENERIC_WRITE |
| 228 | } |
| 229 | if mode&O_APPEND != 0 { |
| 230 | access &^= GENERIC_WRITE |
| 231 | access |= FILE_APPEND_DATA |
| 232 | } |
| 233 | sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE) |
| 234 | var sa *SecurityAttributes |
| 235 | if mode&O_CLOEXEC == 0 { |
| 236 | sa = makeInheritSa() |
| 237 | } |
| 238 | var createmode uint32 |
| 239 | switch { |
| 240 | case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL): |
| 241 | createmode = CREATE_NEW |
| 242 | case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC): |
| 243 | createmode = CREATE_ALWAYS |
| 244 | case mode&O_CREAT == O_CREAT: |
| 245 | createmode = OPEN_ALWAYS |
| 246 | case mode&O_TRUNC == O_TRUNC: |
| 247 | createmode = TRUNCATE_EXISTING |
| 248 | default: |
| 249 | createmode = OPEN_EXISTING |
| 250 | } |
| 251 | h, e := CreateFile(pathp, access, sharemode, sa, createmode, FILE_ATTRIBUTE_NORMAL, 0) |
| 252 | return h, e |
| 253 | } |
| 254 | |
| 255 | func Read(fd Handle, p []byte) (n int, err error) { |
| 256 | var done uint32 |
| 257 | e := ReadFile(fd, p, &done, nil) |
| 258 | if e != nil { |
| 259 | if e == ERROR_BROKEN_PIPE { |
| 260 | // NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin |
| 261 | return 0, nil |
| 262 | } |
| 263 | return 0, e |
| 264 | } |
| 265 | if raceenabled { |
| 266 | if done > 0 { |
| 267 | raceWriteRange(unsafe.Pointer(&p[0]), int(done)) |
| 268 | } |
| 269 | raceAcquire(unsafe.Pointer(&ioSync)) |
| 270 | } |
| 271 | return int(done), nil |
| 272 | } |
| 273 | |
| 274 | func Write(fd Handle, p []byte) (n int, err error) { |
| 275 | if raceenabled { |
| 276 | raceReleaseMerge(unsafe.Pointer(&ioSync)) |
| 277 | } |
| 278 | var done uint32 |
| 279 | e := WriteFile(fd, p, &done, nil) |
| 280 | if e != nil { |
| 281 | return 0, e |
| 282 | } |
| 283 | if raceenabled && done > 0 { |
| 284 | raceReadRange(unsafe.Pointer(&p[0]), int(done)) |
| 285 | } |
| 286 | return int(done), nil |
| 287 | } |
| 288 | |
| 289 | var ioSync int64 |
| 290 | |
| 291 | func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) { |
| 292 | var w uint32 |
| 293 | switch whence { |
| 294 | case 0: |
| 295 | w = FILE_BEGIN |
| 296 | case 1: |
| 297 | w = FILE_CURRENT |
| 298 | case 2: |
| 299 | w = FILE_END |
| 300 | } |
| 301 | hi := int32(offset >> 32) |
| 302 | lo := int32(offset) |
| 303 | // use GetFileType to check pipe, pipe can't do seek |
| 304 | ft, _ := GetFileType(fd) |
| 305 | if ft == FILE_TYPE_PIPE { |
| 306 | return 0, syscall.EPIPE |
| 307 | } |
| 308 | rlo, e := SetFilePointer(fd, lo, &hi, w) |
| 309 | if e != nil { |
| 310 | return 0, e |
| 311 | } |
| 312 | return int64(hi)<<32 + int64(rlo), nil |
| 313 | } |
| 314 | |
| 315 | func Close(fd Handle) (err error) { |
| 316 | return CloseHandle(fd) |
| 317 | } |
| 318 | |
| 319 | var ( |
| 320 | Stdin = getStdHandle(STD_INPUT_HANDLE) |
| 321 | Stdout = getStdHandle(STD_OUTPUT_HANDLE) |
| 322 | Stderr = getStdHandle(STD_ERROR_HANDLE) |
| 323 | ) |
| 324 | |
| 325 | func getStdHandle(stdhandle uint32) (fd Handle) { |
| 326 | r, _ := GetStdHandle(stdhandle) |
| 327 | CloseOnExec(r) |
| 328 | return r |
| 329 | } |
| 330 | |
| 331 | const ImplementsGetwd = true |
| 332 | |
| 333 | func Getwd() (wd string, err error) { |
| 334 | b := make([]uint16, 300) |
| 335 | n, e := GetCurrentDirectory(uint32(len(b)), &b[0]) |
| 336 | if e != nil { |
| 337 | return "", e |
| 338 | } |
| 339 | return string(utf16.Decode(b[0:n])), nil |
| 340 | } |
| 341 | |
| 342 | func Chdir(path string) (err error) { |
| 343 | pathp, err := UTF16PtrFromString(path) |
| 344 | if err != nil { |
| 345 | return err |
| 346 | } |
| 347 | return SetCurrentDirectory(pathp) |
| 348 | } |
| 349 | |
| 350 | func Mkdir(path string, mode uint32) (err error) { |
| 351 | pathp, err := UTF16PtrFromString(path) |
| 352 | if err != nil { |
| 353 | return err |
| 354 | } |
| 355 | return CreateDirectory(pathp, nil) |
| 356 | } |
| 357 | |
| 358 | func Rmdir(path string) (err error) { |
| 359 | pathp, err := UTF16PtrFromString(path) |
| 360 | if err != nil { |
| 361 | return err |
| 362 | } |
| 363 | return RemoveDirectory(pathp) |
| 364 | } |
| 365 | |
| 366 | func Unlink(path string) (err error) { |
| 367 | pathp, err := UTF16PtrFromString(path) |
| 368 | if err != nil { |
| 369 | return err |
| 370 | } |
| 371 | return DeleteFile(pathp) |
| 372 | } |
| 373 | |
| 374 | func Rename(oldpath, newpath string) (err error) { |
| 375 | from, err := UTF16PtrFromString(oldpath) |
| 376 | if err != nil { |
| 377 | return err |
| 378 | } |
| 379 | to, err := UTF16PtrFromString(newpath) |
| 380 | if err != nil { |
| 381 | return err |
| 382 | } |
| 383 | return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING) |
| 384 | } |
| 385 | |
| 386 | func ComputerName() (name string, err error) { |
| 387 | var n uint32 = MAX_COMPUTERNAME_LENGTH + 1 |
| 388 | b := make([]uint16, n) |
| 389 | e := GetComputerName(&b[0], &n) |
| 390 | if e != nil { |
| 391 | return "", e |
| 392 | } |
| 393 | return string(utf16.Decode(b[0:n])), nil |
| 394 | } |
| 395 | |
| 396 | func Ftruncate(fd Handle, length int64) (err error) { |
| 397 | curoffset, e := Seek(fd, 0, 1) |
| 398 | if e != nil { |
| 399 | return e |
| 400 | } |
| 401 | defer Seek(fd, curoffset, 0) |
| 402 | _, e = Seek(fd, length, 0) |
| 403 | if e != nil { |
| 404 | return e |
| 405 | } |
| 406 | e = SetEndOfFile(fd) |
| 407 | if e != nil { |
| 408 | return e |
| 409 | } |
| 410 | return nil |
| 411 | } |
| 412 | |
| 413 | func Gettimeofday(tv *Timeval) (err error) { |
| 414 | var ft Filetime |
| 415 | GetSystemTimeAsFileTime(&ft) |
| 416 | *tv = NsecToTimeval(ft.Nanoseconds()) |
| 417 | return nil |
| 418 | } |
| 419 | |
| 420 | func Pipe(p []Handle) (err error) { |
| 421 | if len(p) != 2 { |
| 422 | return syscall.EINVAL |
| 423 | } |
| 424 | var r, w Handle |
| 425 | e := CreatePipe(&r, &w, makeInheritSa(), 0) |
| 426 | if e != nil { |
| 427 | return e |
| 428 | } |
| 429 | p[0] = r |
| 430 | p[1] = w |
| 431 | return nil |
| 432 | } |
| 433 | |
| 434 | func Utimes(path string, tv []Timeval) (err error) { |
| 435 | if len(tv) != 2 { |
| 436 | return syscall.EINVAL |
| 437 | } |
| 438 | pathp, e := UTF16PtrFromString(path) |
| 439 | if e != nil { |
| 440 | return e |
| 441 | } |
| 442 | h, e := CreateFile(pathp, |
| 443 | FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, |
| 444 | OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) |
| 445 | if e != nil { |
| 446 | return e |
| 447 | } |
| 448 | defer Close(h) |
| 449 | a := NsecToFiletime(tv[0].Nanoseconds()) |
| 450 | w := NsecToFiletime(tv[1].Nanoseconds()) |
| 451 | return SetFileTime(h, nil, &a, &w) |
| 452 | } |
| 453 | |
| 454 | func UtimesNano(path string, ts []Timespec) (err error) { |
| 455 | if len(ts) != 2 { |
| 456 | return syscall.EINVAL |
| 457 | } |
| 458 | pathp, e := UTF16PtrFromString(path) |
| 459 | if e != nil { |
| 460 | return e |
| 461 | } |
| 462 | h, e := CreateFile(pathp, |
| 463 | FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, |
| 464 | OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) |
| 465 | if e != nil { |
| 466 | return e |
| 467 | } |
| 468 | defer Close(h) |
| 469 | a := NsecToFiletime(TimespecToNsec(ts[0])) |
| 470 | w := NsecToFiletime(TimespecToNsec(ts[1])) |
| 471 | return SetFileTime(h, nil, &a, &w) |
| 472 | } |
| 473 | |
| 474 | func Fsync(fd Handle) (err error) { |
| 475 | return FlushFileBuffers(fd) |
| 476 | } |
| 477 | |
| 478 | func Chmod(path string, mode uint32) (err error) { |
| 479 | if mode == 0 { |
| 480 | return syscall.EINVAL |
| 481 | } |
| 482 | p, e := UTF16PtrFromString(path) |
| 483 | if e != nil { |
| 484 | return e |
| 485 | } |
| 486 | attrs, e := GetFileAttributes(p) |
| 487 | if e != nil { |
| 488 | return e |
| 489 | } |
| 490 | if mode&S_IWRITE != 0 { |
| 491 | attrs &^= FILE_ATTRIBUTE_READONLY |
| 492 | } else { |
| 493 | attrs |= FILE_ATTRIBUTE_READONLY |
| 494 | } |
| 495 | return SetFileAttributes(p, attrs) |
| 496 | } |
| 497 | |
| 498 | func LoadGetSystemTimePreciseAsFileTime() error { |
| 499 | return procGetSystemTimePreciseAsFileTime.Find() |
| 500 | } |
| 501 | |
| 502 | func LoadCancelIoEx() error { |
| 503 | return procCancelIoEx.Find() |
| 504 | } |
| 505 | |
| 506 | func LoadSetFileCompletionNotificationModes() error { |
| 507 | return procSetFileCompletionNotificationModes.Find() |
| 508 | } |
| 509 | |
| 510 | // net api calls |
| 511 | |
| 512 | const socket_error = uintptr(^uint32(0)) |
| 513 | |
| 514 | //sys WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup |
| 515 | //sys WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup |
| 516 | //sys WSAIoctl(s Handle, iocc uint32, inbuf *byte, cbif uint32, outbuf *byte, cbob uint32, cbbr *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) [failretval==socket_error] = ws2_32.WSAIoctl |
| 517 | //sys socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket |
| 518 | //sys Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt |
| 519 | //sys Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt |
| 520 | //sys bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind |
| 521 | //sys connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect |
| 522 | //sys getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname |
| 523 | //sys getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername |
| 524 | //sys listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen |
| 525 | //sys shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown |
| 526 | //sys Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket |
| 527 | //sys AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx |
| 528 | //sys GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs |
| 529 | //sys WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv |
| 530 | //sys WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend |
| 531 | //sys WSARecvFrom(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, from *RawSockaddrAny, fromlen *int32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecvFrom |
| 532 | //sys WSASendTo(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to *RawSockaddrAny, tolen int32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASendTo |
| 533 | //sys GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname |
| 534 | //sys GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname |
| 535 | //sys Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs |
| 536 | //sys GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname |
| 537 | //sys DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W |
| 538 | //sys DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree |
| 539 | //sys DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W |
| 540 | //sys GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW |
| 541 | //sys FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW |
| 542 | //sys GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry |
| 543 | //sys GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo |
| 544 | //sys SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes |
| 545 | //sys WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW |
| 546 | //sys GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses |
| 547 | //sys GetACP() (acp uint32) = kernel32.GetACP |
| 548 | //sys MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar |
| 549 | |
| 550 | // For testing: clients can set this flag to force |
| 551 | // creation of IPv6 sockets to return EAFNOSUPPORT. |
| 552 | var SocketDisableIPv6 bool |
| 553 | |
| 554 | type RawSockaddrInet4 struct { |
| 555 | Family uint16 |
| 556 | Port uint16 |
| 557 | Addr [4]byte /* in_addr */ |
| 558 | Zero [8]uint8 |
| 559 | } |
| 560 | |
| 561 | type RawSockaddrInet6 struct { |
| 562 | Family uint16 |
| 563 | Port uint16 |
| 564 | Flowinfo uint32 |
| 565 | Addr [16]byte /* in6_addr */ |
| 566 | Scope_id uint32 |
| 567 | } |
| 568 | |
| 569 | type RawSockaddr struct { |
| 570 | Family uint16 |
| 571 | Data [14]int8 |
| 572 | } |
| 573 | |
| 574 | type RawSockaddrAny struct { |
| 575 | Addr RawSockaddr |
| 576 | Pad [96]int8 |
| 577 | } |
| 578 | |
| 579 | type Sockaddr interface { |
| 580 | sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs |
| 581 | } |
| 582 | |
| 583 | type SockaddrInet4 struct { |
| 584 | Port int |
| 585 | Addr [4]byte |
| 586 | raw RawSockaddrInet4 |
| 587 | } |
| 588 | |
| 589 | func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) { |
| 590 | if sa.Port < 0 || sa.Port > 0xFFFF { |
| 591 | return nil, 0, syscall.EINVAL |
| 592 | } |
| 593 | sa.raw.Family = AF_INET |
| 594 | p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) |
| 595 | p[0] = byte(sa.Port >> 8) |
| 596 | p[1] = byte(sa.Port) |
| 597 | for i := 0; i < len(sa.Addr); i++ { |
| 598 | sa.raw.Addr[i] = sa.Addr[i] |
| 599 | } |
| 600 | return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil |
| 601 | } |
| 602 | |
| 603 | type SockaddrInet6 struct { |
| 604 | Port int |
| 605 | ZoneId uint32 |
| 606 | Addr [16]byte |
| 607 | raw RawSockaddrInet6 |
| 608 | } |
| 609 | |
| 610 | func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) { |
| 611 | if sa.Port < 0 || sa.Port > 0xFFFF { |
| 612 | return nil, 0, syscall.EINVAL |
| 613 | } |
| 614 | sa.raw.Family = AF_INET6 |
| 615 | p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) |
| 616 | p[0] = byte(sa.Port >> 8) |
| 617 | p[1] = byte(sa.Port) |
| 618 | sa.raw.Scope_id = sa.ZoneId |
| 619 | for i := 0; i < len(sa.Addr); i++ { |
| 620 | sa.raw.Addr[i] = sa.Addr[i] |
| 621 | } |
| 622 | return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil |
| 623 | } |
| 624 | |
| 625 | type SockaddrUnix struct { |
| 626 | Name string |
| 627 | } |
| 628 | |
| 629 | func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) { |
| 630 | // TODO(brainman): implement SockaddrUnix.sockaddr() |
| 631 | return nil, 0, syscall.EWINDOWS |
| 632 | } |
| 633 | |
| 634 | func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) { |
| 635 | switch rsa.Addr.Family { |
| 636 | case AF_UNIX: |
| 637 | return nil, syscall.EWINDOWS |
| 638 | |
| 639 | case AF_INET: |
| 640 | pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) |
| 641 | sa := new(SockaddrInet4) |
| 642 | p := (*[2]byte)(unsafe.Pointer(&pp.Port)) |
| 643 | sa.Port = int(p[0])<<8 + int(p[1]) |
| 644 | for i := 0; i < len(sa.Addr); i++ { |
| 645 | sa.Addr[i] = pp.Addr[i] |
| 646 | } |
| 647 | return sa, nil |
| 648 | |
| 649 | case AF_INET6: |
| 650 | pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) |
| 651 | sa := new(SockaddrInet6) |
| 652 | p := (*[2]byte)(unsafe.Pointer(&pp.Port)) |
| 653 | sa.Port = int(p[0])<<8 + int(p[1]) |
| 654 | sa.ZoneId = pp.Scope_id |
| 655 | for i := 0; i < len(sa.Addr); i++ { |
| 656 | sa.Addr[i] = pp.Addr[i] |
| 657 | } |
| 658 | return sa, nil |
| 659 | } |
| 660 | return nil, syscall.EAFNOSUPPORT |
| 661 | } |
| 662 | |
| 663 | func Socket(domain, typ, proto int) (fd Handle, err error) { |
| 664 | if domain == AF_INET6 && SocketDisableIPv6 { |
| 665 | return InvalidHandle, syscall.EAFNOSUPPORT |
| 666 | } |
| 667 | return socket(int32(domain), int32(typ), int32(proto)) |
| 668 | } |
| 669 | |
| 670 | func SetsockoptInt(fd Handle, level, opt int, value int) (err error) { |
| 671 | v := int32(value) |
| 672 | return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v))) |
| 673 | } |
| 674 | |
| 675 | func Bind(fd Handle, sa Sockaddr) (err error) { |
| 676 | ptr, n, err := sa.sockaddr() |
| 677 | if err != nil { |
| 678 | return err |
| 679 | } |
| 680 | return bind(fd, ptr, n) |
| 681 | } |
| 682 | |
| 683 | func Connect(fd Handle, sa Sockaddr) (err error) { |
| 684 | ptr, n, err := sa.sockaddr() |
| 685 | if err != nil { |
| 686 | return err |
| 687 | } |
| 688 | return connect(fd, ptr, n) |
| 689 | } |
| 690 | |
| 691 | func Getsockname(fd Handle) (sa Sockaddr, err error) { |
| 692 | var rsa RawSockaddrAny |
| 693 | l := int32(unsafe.Sizeof(rsa)) |
| 694 | if err = getsockname(fd, &rsa, &l); err != nil { |
| 695 | return |
| 696 | } |
| 697 | return rsa.Sockaddr() |
| 698 | } |
| 699 | |
| 700 | func Getpeername(fd Handle) (sa Sockaddr, err error) { |
| 701 | var rsa RawSockaddrAny |
| 702 | l := int32(unsafe.Sizeof(rsa)) |
| 703 | if err = getpeername(fd, &rsa, &l); err != nil { |
| 704 | return |
| 705 | } |
| 706 | return rsa.Sockaddr() |
| 707 | } |
| 708 | |
| 709 | func Listen(s Handle, n int) (err error) { |
| 710 | return listen(s, int32(n)) |
| 711 | } |
| 712 | |
| 713 | func Shutdown(fd Handle, how int) (err error) { |
| 714 | return shutdown(fd, int32(how)) |
| 715 | } |
| 716 | |
| 717 | func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) { |
| 718 | rsa, l, err := to.sockaddr() |
| 719 | if err != nil { |
| 720 | return err |
| 721 | } |
| 722 | return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine) |
| 723 | } |
| 724 | |
| 725 | func LoadGetAddrInfo() error { |
| 726 | return procGetAddrInfoW.Find() |
| 727 | } |
| 728 | |
| 729 | var connectExFunc struct { |
| 730 | once sync.Once |
| 731 | addr uintptr |
| 732 | err error |
| 733 | } |
| 734 | |
| 735 | func LoadConnectEx() error { |
| 736 | connectExFunc.once.Do(func() { |
| 737 | var s Handle |
| 738 | s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) |
| 739 | if connectExFunc.err != nil { |
| 740 | return |
| 741 | } |
| 742 | defer CloseHandle(s) |
| 743 | var n uint32 |
| 744 | connectExFunc.err = WSAIoctl(s, |
| 745 | SIO_GET_EXTENSION_FUNCTION_POINTER, |
| 746 | (*byte)(unsafe.Pointer(&WSAID_CONNECTEX)), |
| 747 | uint32(unsafe.Sizeof(WSAID_CONNECTEX)), |
| 748 | (*byte)(unsafe.Pointer(&connectExFunc.addr)), |
| 749 | uint32(unsafe.Sizeof(connectExFunc.addr)), |
| 750 | &n, nil, 0) |
| 751 | }) |
| 752 | return connectExFunc.err |
| 753 | } |
| 754 | |
| 755 | func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) { |
| 756 | r1, _, e1 := syscall.Syscall9(connectExFunc.addr, 7, uintptr(s), uintptr(name), uintptr(namelen), uintptr(unsafe.Pointer(sendBuf)), uintptr(sendDataLen), uintptr(unsafe.Pointer(bytesSent)), uintptr(unsafe.Pointer(overlapped)), 0, 0) |
| 757 | if r1 == 0 { |
| 758 | if e1 != 0 { |
| 759 | err = error(e1) |
| 760 | } else { |
| 761 | err = syscall.EINVAL |
| 762 | } |
| 763 | } |
| 764 | return |
| 765 | } |
| 766 | |
| 767 | func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error { |
| 768 | err := LoadConnectEx() |
| 769 | if err != nil { |
| 770 | return errorspkg.New("failed to find ConnectEx: " + err.Error()) |
| 771 | } |
| 772 | ptr, n, err := sa.sockaddr() |
| 773 | if err != nil { |
| 774 | return err |
| 775 | } |
| 776 | return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped) |
| 777 | } |
| 778 | |
| 779 | // Invented structures to support what package os expects. |
| 780 | type Rusage struct { |
| 781 | CreationTime Filetime |
| 782 | ExitTime Filetime |
| 783 | KernelTime Filetime |
| 784 | UserTime Filetime |
| 785 | } |
| 786 | |
| 787 | type WaitStatus struct { |
| 788 | ExitCode uint32 |
| 789 | } |
| 790 | |
| 791 | func (w WaitStatus) Exited() bool { return true } |
| 792 | |
| 793 | func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) } |
| 794 | |
| 795 | func (w WaitStatus) Signal() Signal { return -1 } |
| 796 | |
| 797 | func (w WaitStatus) CoreDump() bool { return false } |
| 798 | |
| 799 | func (w WaitStatus) Stopped() bool { return false } |
| 800 | |
| 801 | func (w WaitStatus) Continued() bool { return false } |
| 802 | |
| 803 | func (w WaitStatus) StopSignal() Signal { return -1 } |
| 804 | |
| 805 | func (w WaitStatus) Signaled() bool { return false } |
| 806 | |
| 807 | func (w WaitStatus) TrapCause() int { return -1 } |
| 808 | |
| 809 | // Timespec is an invented structure on Windows, but here for |
| 810 | // consistency with the corresponding package for other operating systems. |
| 811 | type Timespec struct { |
| 812 | Sec int64 |
| 813 | Nsec int64 |
| 814 | } |
| 815 | |
| 816 | func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } |
| 817 | |
| 818 | func NsecToTimespec(nsec int64) (ts Timespec) { |
| 819 | ts.Sec = nsec / 1e9 |
| 820 | ts.Nsec = nsec % 1e9 |
| 821 | return |
| 822 | } |
| 823 | |
| 824 | // TODO(brainman): fix all needed for net |
| 825 | |
| 826 | func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS } |
| 827 | func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) { |
| 828 | return 0, nil, syscall.EWINDOWS |
| 829 | } |
| 830 | func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) { return syscall.EWINDOWS } |
| 831 | func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS } |
| 832 | |
| 833 | // The Linger struct is wrong but we only noticed after Go 1. |
| 834 | // sysLinger is the real system call structure. |
| 835 | |
| 836 | // BUG(brainman): The definition of Linger is not appropriate for direct use |
| 837 | // with Setsockopt and Getsockopt. |
| 838 | // Use SetsockoptLinger instead. |
| 839 | |
| 840 | type Linger struct { |
| 841 | Onoff int32 |
| 842 | Linger int32 |
| 843 | } |
| 844 | |
| 845 | type sysLinger struct { |
| 846 | Onoff uint16 |
| 847 | Linger uint16 |
| 848 | } |
| 849 | |
| 850 | type IPMreq struct { |
| 851 | Multiaddr [4]byte /* in_addr */ |
| 852 | Interface [4]byte /* in_addr */ |
| 853 | } |
| 854 | |
| 855 | type IPv6Mreq struct { |
| 856 | Multiaddr [16]byte /* in6_addr */ |
| 857 | Interface uint32 |
| 858 | } |
| 859 | |
| 860 | func GetsockoptInt(fd Handle, level, opt int) (int, error) { return -1, syscall.EWINDOWS } |
| 861 | |
| 862 | func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) { |
| 863 | sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)} |
| 864 | return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys))) |
| 865 | } |
| 866 | |
| 867 | func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) { |
| 868 | return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4) |
| 869 | } |
| 870 | func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) { |
| 871 | return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq))) |
| 872 | } |
| 873 | func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) { |
| 874 | return syscall.EWINDOWS |
| 875 | } |
| 876 | |
| 877 | func Getpid() (pid int) { return int(getCurrentProcessId()) } |
| 878 | |
| 879 | func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) { |
| 880 | // NOTE(rsc): The Win32finddata struct is wrong for the system call: |
| 881 | // the two paths are each one uint16 short. Use the correct struct, |
| 882 | // a win32finddata1, and then copy the results out. |
| 883 | // There is no loss of expressivity here, because the final |
| 884 | // uint16, if it is used, is supposed to be a NUL, and Go doesn't need that. |
| 885 | // For Go 1.1, we might avoid the allocation of win32finddata1 here |
| 886 | // by adding a final Bug [2]uint16 field to the struct and then |
| 887 | // adjusting the fields in the result directly. |
| 888 | var data1 win32finddata1 |
| 889 | handle, err = findFirstFile1(name, &data1) |
| 890 | if err == nil { |
| 891 | copyFindData(data, &data1) |
| 892 | } |
| 893 | return |
| 894 | } |
| 895 | |
| 896 | func FindNextFile(handle Handle, data *Win32finddata) (err error) { |
| 897 | var data1 win32finddata1 |
| 898 | err = findNextFile1(handle, &data1) |
| 899 | if err == nil { |
| 900 | copyFindData(data, &data1) |
| 901 | } |
| 902 | return |
| 903 | } |
| 904 | |
| 905 | func getProcessEntry(pid int) (*ProcessEntry32, error) { |
| 906 | snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) |
| 907 | if err != nil { |
| 908 | return nil, err |
| 909 | } |
| 910 | defer CloseHandle(snapshot) |
| 911 | var procEntry ProcessEntry32 |
| 912 | procEntry.Size = uint32(unsafe.Sizeof(procEntry)) |
| 913 | if err = Process32First(snapshot, &procEntry); err != nil { |
| 914 | return nil, err |
| 915 | } |
| 916 | for { |
| 917 | if procEntry.ProcessID == uint32(pid) { |
| 918 | return &procEntry, nil |
| 919 | } |
| 920 | err = Process32Next(snapshot, &procEntry) |
| 921 | if err != nil { |
| 922 | return nil, err |
| 923 | } |
| 924 | } |
| 925 | } |
| 926 | |
| 927 | func Getppid() (ppid int) { |
| 928 | pe, err := getProcessEntry(Getpid()) |
| 929 | if err != nil { |
| 930 | return -1 |
| 931 | } |
| 932 | return int(pe.ParentProcessID) |
| 933 | } |
| 934 | |
| 935 | // TODO(brainman): fix all needed for os |
| 936 | func Fchdir(fd Handle) (err error) { return syscall.EWINDOWS } |
| 937 | func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS } |
| 938 | func Symlink(path, link string) (err error) { return syscall.EWINDOWS } |
| 939 | |
| 940 | func Fchmod(fd Handle, mode uint32) (err error) { return syscall.EWINDOWS } |
| 941 | func Chown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } |
| 942 | func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } |
| 943 | func Fchown(fd Handle, uid int, gid int) (err error) { return syscall.EWINDOWS } |
| 944 | |
| 945 | func Getuid() (uid int) { return -1 } |
| 946 | func Geteuid() (euid int) { return -1 } |
| 947 | func Getgid() (gid int) { return -1 } |
| 948 | func Getegid() (egid int) { return -1 } |
| 949 | func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS } |
| 950 | |
| 951 | type Signal int |
| 952 | |
| 953 | func (s Signal) Signal() {} |
| 954 | |
| 955 | func (s Signal) String() string { |
| 956 | if 0 <= s && int(s) < len(signals) { |
| 957 | str := signals[s] |
| 958 | if str != "" { |
| 959 | return str |
| 960 | } |
| 961 | } |
| 962 | return "signal " + itoa(int(s)) |
| 963 | } |
| 964 | |
| 965 | func LoadCreateSymbolicLink() error { |
| 966 | return procCreateSymbolicLinkW.Find() |
| 967 | } |
| 968 | |
| 969 | // Readlink returns the destination of the named symbolic link. |
| 970 | func Readlink(path string, buf []byte) (n int, err error) { |
| 971 | fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING, |
| 972 | FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0) |
| 973 | if err != nil { |
| 974 | return -1, err |
| 975 | } |
| 976 | defer CloseHandle(fd) |
| 977 | |
| 978 | rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE) |
| 979 | var bytesReturned uint32 |
| 980 | err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil) |
| 981 | if err != nil { |
| 982 | return -1, err |
| 983 | } |
| 984 | |
| 985 | rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0])) |
| 986 | var s string |
| 987 | switch rdb.ReparseTag { |
| 988 | case IO_REPARSE_TAG_SYMLINK: |
| 989 | data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) |
| 990 | p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) |
| 991 | s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) |
| 992 | case IO_REPARSE_TAG_MOUNT_POINT: |
| 993 | data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) |
| 994 | p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) |
| 995 | s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) |
| 996 | default: |
| 997 | // the path is not a symlink or junction but another type of reparse |
| 998 | // point |
| 999 | return -1, syscall.ENOENT |
| 1000 | } |
| 1001 | n = copy(buf, []byte(s)) |
| 1002 | |
| 1003 | return n, nil |
| 1004 | } |