Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [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 | "time" |
| 14 | "unicode/utf16" |
| 15 | "unsafe" |
| 16 | |
| 17 | "golang.org/x/sys/internal/unsafeheader" |
| 18 | ) |
| 19 | |
| 20 | type Handle uintptr |
| 21 | |
| 22 | const ( |
| 23 | InvalidHandle = ^Handle(0) |
| 24 | |
| 25 | // Flags for DefineDosDevice. |
| 26 | DDD_EXACT_MATCH_ON_REMOVE = 0x00000004 |
| 27 | DDD_NO_BROADCAST_SYSTEM = 0x00000008 |
| 28 | DDD_RAW_TARGET_PATH = 0x00000001 |
| 29 | DDD_REMOVE_DEFINITION = 0x00000002 |
| 30 | |
| 31 | // Return values for GetDriveType. |
| 32 | DRIVE_UNKNOWN = 0 |
| 33 | DRIVE_NO_ROOT_DIR = 1 |
| 34 | DRIVE_REMOVABLE = 2 |
| 35 | DRIVE_FIXED = 3 |
| 36 | DRIVE_REMOTE = 4 |
| 37 | DRIVE_CDROM = 5 |
| 38 | DRIVE_RAMDISK = 6 |
| 39 | |
| 40 | // File system flags from GetVolumeInformation and GetVolumeInformationByHandle. |
| 41 | FILE_CASE_SENSITIVE_SEARCH = 0x00000001 |
| 42 | FILE_CASE_PRESERVED_NAMES = 0x00000002 |
| 43 | FILE_FILE_COMPRESSION = 0x00000010 |
| 44 | FILE_DAX_VOLUME = 0x20000000 |
| 45 | FILE_NAMED_STREAMS = 0x00040000 |
| 46 | FILE_PERSISTENT_ACLS = 0x00000008 |
| 47 | FILE_READ_ONLY_VOLUME = 0x00080000 |
| 48 | FILE_SEQUENTIAL_WRITE_ONCE = 0x00100000 |
| 49 | FILE_SUPPORTS_ENCRYPTION = 0x00020000 |
| 50 | FILE_SUPPORTS_EXTENDED_ATTRIBUTES = 0x00800000 |
| 51 | FILE_SUPPORTS_HARD_LINKS = 0x00400000 |
| 52 | FILE_SUPPORTS_OBJECT_IDS = 0x00010000 |
| 53 | FILE_SUPPORTS_OPEN_BY_FILE_ID = 0x01000000 |
| 54 | FILE_SUPPORTS_REPARSE_POINTS = 0x00000080 |
| 55 | FILE_SUPPORTS_SPARSE_FILES = 0x00000040 |
| 56 | FILE_SUPPORTS_TRANSACTIONS = 0x00200000 |
| 57 | FILE_SUPPORTS_USN_JOURNAL = 0x02000000 |
| 58 | FILE_UNICODE_ON_DISK = 0x00000004 |
| 59 | FILE_VOLUME_IS_COMPRESSED = 0x00008000 |
| 60 | FILE_VOLUME_QUOTAS = 0x00000020 |
| 61 | |
| 62 | // Flags for LockFileEx. |
| 63 | LOCKFILE_FAIL_IMMEDIATELY = 0x00000001 |
| 64 | LOCKFILE_EXCLUSIVE_LOCK = 0x00000002 |
| 65 | |
| 66 | // Return values of SleepEx and other APC functions |
| 67 | STATUS_USER_APC = 0x000000C0 |
| 68 | WAIT_IO_COMPLETION = STATUS_USER_APC |
| 69 | ) |
| 70 | |
| 71 | // StringToUTF16 is deprecated. Use UTF16FromString instead. |
| 72 | // If s contains a NUL byte this function panics instead of |
| 73 | // returning an error. |
| 74 | func StringToUTF16(s string) []uint16 { |
| 75 | a, err := UTF16FromString(s) |
| 76 | if err != nil { |
| 77 | panic("windows: string with NUL passed to StringToUTF16") |
| 78 | } |
| 79 | return a |
| 80 | } |
| 81 | |
| 82 | // UTF16FromString returns the UTF-16 encoding of the UTF-8 string |
| 83 | // s, with a terminating NUL added. If s contains a NUL byte at any |
| 84 | // location, it returns (nil, syscall.EINVAL). |
| 85 | func UTF16FromString(s string) ([]uint16, error) { |
| 86 | for i := 0; i < len(s); i++ { |
| 87 | if s[i] == 0 { |
| 88 | return nil, syscall.EINVAL |
| 89 | } |
| 90 | } |
| 91 | return utf16.Encode([]rune(s + "\x00")), nil |
| 92 | } |
| 93 | |
| 94 | // UTF16ToString returns the UTF-8 encoding of the UTF-16 sequence s, |
| 95 | // with a terminating NUL removed. |
| 96 | func UTF16ToString(s []uint16) string { |
| 97 | for i, v := range s { |
| 98 | if v == 0 { |
| 99 | s = s[0:i] |
| 100 | break |
| 101 | } |
| 102 | } |
| 103 | return string(utf16.Decode(s)) |
| 104 | } |
| 105 | |
| 106 | // StringToUTF16Ptr is deprecated. Use UTF16PtrFromString instead. |
| 107 | // If s contains a NUL byte this function panics instead of |
| 108 | // returning an error. |
| 109 | func StringToUTF16Ptr(s string) *uint16 { return &StringToUTF16(s)[0] } |
| 110 | |
| 111 | // UTF16PtrFromString returns pointer to the UTF-16 encoding of |
| 112 | // the UTF-8 string s, with a terminating NUL added. If s |
| 113 | // contains a NUL byte at any location, it returns (nil, syscall.EINVAL). |
| 114 | func UTF16PtrFromString(s string) (*uint16, error) { |
| 115 | a, err := UTF16FromString(s) |
| 116 | if err != nil { |
| 117 | return nil, err |
| 118 | } |
| 119 | return &a[0], nil |
| 120 | } |
| 121 | |
| 122 | // UTF16PtrToString takes a pointer to a UTF-16 sequence and returns the corresponding UTF-8 encoded string. |
| 123 | // If the pointer is nil, this returns the empty string. This assumes that the UTF-16 sequence is terminated |
| 124 | // at a zero word; if the zero word is not present, the program may crash. |
| 125 | func UTF16PtrToString(p *uint16) string { |
| 126 | if p == nil { |
| 127 | return "" |
| 128 | } |
| 129 | if *p == 0 { |
| 130 | return "" |
| 131 | } |
| 132 | |
| 133 | // Find NUL terminator. |
| 134 | n := 0 |
| 135 | for ptr := unsafe.Pointer(p); *(*uint16)(ptr) != 0; n++ { |
| 136 | ptr = unsafe.Pointer(uintptr(ptr) + unsafe.Sizeof(*p)) |
| 137 | } |
| 138 | |
| 139 | var s []uint16 |
| 140 | h := (*unsafeheader.Slice)(unsafe.Pointer(&s)) |
| 141 | h.Data = unsafe.Pointer(p) |
| 142 | h.Len = n |
| 143 | h.Cap = n |
| 144 | |
| 145 | return string(utf16.Decode(s)) |
| 146 | } |
| 147 | |
| 148 | func Getpagesize() int { return 4096 } |
| 149 | |
| 150 | // NewCallback converts a Go function to a function pointer conforming to the stdcall calling convention. |
| 151 | // This is useful when interoperating with Windows code requiring callbacks. |
| 152 | // 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. |
| 153 | func NewCallback(fn interface{}) uintptr { |
| 154 | return syscall.NewCallback(fn) |
| 155 | } |
| 156 | |
| 157 | // NewCallbackCDecl converts a Go function to a function pointer conforming to the cdecl calling convention. |
| 158 | // This is useful when interoperating with Windows code requiring callbacks. |
| 159 | // 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. |
| 160 | func NewCallbackCDecl(fn interface{}) uintptr { |
| 161 | return syscall.NewCallbackCDecl(fn) |
| 162 | } |
| 163 | |
| 164 | // windows api calls |
| 165 | |
| 166 | //sys GetLastError() (lasterr error) |
| 167 | //sys LoadLibrary(libname string) (handle Handle, err error) = LoadLibraryW |
| 168 | //sys LoadLibraryEx(libname string, zero Handle, flags uintptr) (handle Handle, err error) = LoadLibraryExW |
| 169 | //sys FreeLibrary(handle Handle) (err error) |
| 170 | //sys GetProcAddress(module Handle, procname string) (proc uintptr, err error) |
| 171 | //sys GetModuleFileName(module Handle, filename *uint16, size uint32) (n uint32, err error) = kernel32.GetModuleFileNameW |
| 172 | //sys GetModuleHandleEx(flags uint32, moduleName *uint16, module *Handle) (err error) = kernel32.GetModuleHandleExW |
| 173 | //sys GetVersion() (ver uint32, err error) |
| 174 | //sys FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW |
| 175 | //sys ExitProcess(exitcode uint32) |
| 176 | //sys IsWow64Process(handle Handle, isWow64 *bool) (err error) = IsWow64Process |
| 177 | //sys CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile Handle) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW |
| 178 | //sys ReadFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) |
| 179 | //sys WriteFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) |
| 180 | //sys GetOverlappedResult(handle Handle, overlapped *Overlapped, done *uint32, wait bool) (err error) |
| 181 | //sys SetFilePointer(handle Handle, lowoffset int32, highoffsetptr *int32, whence uint32) (newlowoffset uint32, err error) [failretval==0xffffffff] |
| 182 | //sys CloseHandle(handle Handle) (err error) |
| 183 | //sys GetStdHandle(stdhandle uint32) (handle Handle, err error) [failretval==InvalidHandle] |
| 184 | //sys SetStdHandle(stdhandle uint32, handle Handle) (err error) |
| 185 | //sys findFirstFile1(name *uint16, data *win32finddata1) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstFileW |
| 186 | //sys findNextFile1(handle Handle, data *win32finddata1) (err error) = FindNextFileW |
| 187 | //sys FindClose(handle Handle) (err error) |
| 188 | //sys GetFileInformationByHandle(handle Handle, data *ByHandleFileInformation) (err error) |
| 189 | //sys GetFileInformationByHandleEx(handle Handle, class uint32, outBuffer *byte, outBufferLen uint32) (err error) |
| 190 | //sys GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, err error) = GetCurrentDirectoryW |
| 191 | //sys SetCurrentDirectory(path *uint16) (err error) = SetCurrentDirectoryW |
| 192 | //sys CreateDirectory(path *uint16, sa *SecurityAttributes) (err error) = CreateDirectoryW |
| 193 | //sys RemoveDirectory(path *uint16) (err error) = RemoveDirectoryW |
| 194 | //sys DeleteFile(path *uint16) (err error) = DeleteFileW |
| 195 | //sys MoveFile(from *uint16, to *uint16) (err error) = MoveFileW |
| 196 | //sys MoveFileEx(from *uint16, to *uint16, flags uint32) (err error) = MoveFileExW |
| 197 | //sys LockFileEx(file Handle, flags uint32, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *Overlapped) (err error) |
| 198 | //sys UnlockFileEx(file Handle, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *Overlapped) (err error) |
| 199 | //sys GetComputerName(buf *uint16, n *uint32) (err error) = GetComputerNameW |
| 200 | //sys GetComputerNameEx(nametype uint32, buf *uint16, n *uint32) (err error) = GetComputerNameExW |
| 201 | //sys SetEndOfFile(handle Handle) (err error) |
| 202 | //sys GetSystemTimeAsFileTime(time *Filetime) |
| 203 | //sys GetSystemTimePreciseAsFileTime(time *Filetime) |
| 204 | //sys GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff] |
| 205 | //sys CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uint32, threadcnt uint32) (handle Handle, err error) |
| 206 | //sys GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uint32, overlapped **Overlapped, timeout uint32) (err error) |
| 207 | //sys PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uint32, overlapped *Overlapped) (err error) |
| 208 | //sys CancelIo(s Handle) (err error) |
| 209 | //sys CancelIoEx(s Handle, o *Overlapped) (err error) |
| 210 | //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 |
| 211 | //sys OpenProcess(desiredAccess uint32, inheritHandle bool, processId uint32) (handle Handle, err error) |
| 212 | //sys ShellExecute(hwnd Handle, verb *uint16, file *uint16, args *uint16, cwd *uint16, showCmd int32) (err error) [failretval<=32] = shell32.ShellExecuteW |
| 213 | //sys shGetKnownFolderPath(id *KNOWNFOLDERID, flags uint32, token Token, path **uint16) (ret error) = shell32.SHGetKnownFolderPath |
| 214 | //sys TerminateProcess(handle Handle, exitcode uint32) (err error) |
| 215 | //sys GetExitCodeProcess(handle Handle, exitcode *uint32) (err error) |
| 216 | //sys GetStartupInfo(startupInfo *StartupInfo) (err error) = GetStartupInfoW |
| 217 | //sys GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error) |
| 218 | //sys DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error) |
| 219 | //sys WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] |
| 220 | //sys waitForMultipleObjects(count uint32, handles uintptr, waitAll bool, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] = WaitForMultipleObjects |
| 221 | //sys GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW |
| 222 | //sys CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error) |
| 223 | //sys GetFileType(filehandle Handle) (n uint32, err error) |
| 224 | //sys CryptAcquireContext(provhandle *Handle, container *uint16, provider *uint16, provtype uint32, flags uint32) (err error) = advapi32.CryptAcquireContextW |
| 225 | //sys CryptReleaseContext(provhandle Handle, flags uint32) (err error) = advapi32.CryptReleaseContext |
| 226 | //sys CryptGenRandom(provhandle Handle, buflen uint32, buf *byte) (err error) = advapi32.CryptGenRandom |
| 227 | //sys GetEnvironmentStrings() (envs *uint16, err error) [failretval==nil] = kernel32.GetEnvironmentStringsW |
| 228 | //sys FreeEnvironmentStrings(envs *uint16) (err error) = kernel32.FreeEnvironmentStringsW |
| 229 | //sys GetEnvironmentVariable(name *uint16, buffer *uint16, size uint32) (n uint32, err error) = kernel32.GetEnvironmentVariableW |
| 230 | //sys SetEnvironmentVariable(name *uint16, value *uint16) (err error) = kernel32.SetEnvironmentVariableW |
| 231 | //sys CreateEnvironmentBlock(block **uint16, token Token, inheritExisting bool) (err error) = userenv.CreateEnvironmentBlock |
| 232 | //sys DestroyEnvironmentBlock(block *uint16) (err error) = userenv.DestroyEnvironmentBlock |
| 233 | //sys getTickCount64() (ms uint64) = kernel32.GetTickCount64 |
| 234 | //sys SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error) |
| 235 | //sys GetFileAttributes(name *uint16) (attrs uint32, err error) [failretval==INVALID_FILE_ATTRIBUTES] = kernel32.GetFileAttributesW |
| 236 | //sys SetFileAttributes(name *uint16, attrs uint32) (err error) = kernel32.SetFileAttributesW |
| 237 | //sys GetFileAttributesEx(name *uint16, level uint32, info *byte) (err error) = kernel32.GetFileAttributesExW |
| 238 | //sys GetCommandLine() (cmd *uint16) = kernel32.GetCommandLineW |
| 239 | //sys CommandLineToArgv(cmd *uint16, argc *int32) (argv *[8192]*[8192]uint16, err error) [failretval==nil] = shell32.CommandLineToArgvW |
| 240 | //sys LocalFree(hmem Handle) (handle Handle, err error) [failretval!=0] |
| 241 | //sys SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error) |
| 242 | //sys FlushFileBuffers(handle Handle) (err error) |
| 243 | //sys GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, err error) = kernel32.GetFullPathNameW |
| 244 | //sys GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err error) = kernel32.GetLongPathNameW |
| 245 | //sys GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW |
| 246 | //sys CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) = kernel32.CreateFileMappingW |
| 247 | //sys MapViewOfFile(handle Handle, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, err error) |
| 248 | //sys UnmapViewOfFile(addr uintptr) (err error) |
| 249 | //sys FlushViewOfFile(addr uintptr, length uintptr) (err error) |
| 250 | //sys VirtualLock(addr uintptr, length uintptr) (err error) |
| 251 | //sys VirtualUnlock(addr uintptr, length uintptr) (err error) |
| 252 | //sys VirtualAlloc(address uintptr, size uintptr, alloctype uint32, protect uint32) (value uintptr, err error) = kernel32.VirtualAlloc |
| 253 | //sys VirtualFree(address uintptr, size uintptr, freetype uint32) (err error) = kernel32.VirtualFree |
| 254 | //sys VirtualProtect(address uintptr, size uintptr, newprotect uint32, oldprotect *uint32) (err error) = kernel32.VirtualProtect |
| 255 | //sys TransmitFile(s Handle, handle Handle, bytesToWrite uint32, bytsPerSend uint32, overlapped *Overlapped, transmitFileBuf *TransmitFileBuffers, flags uint32) (err error) = mswsock.TransmitFile |
| 256 | //sys ReadDirectoryChanges(handle Handle, buf *byte, buflen uint32, watchSubTree bool, mask uint32, retlen *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) = kernel32.ReadDirectoryChangesW |
| 257 | //sys CertOpenSystemStore(hprov Handle, name *uint16) (store Handle, err error) = crypt32.CertOpenSystemStoreW |
| 258 | //sys CertOpenStore(storeProvider uintptr, msgAndCertEncodingType uint32, cryptProv uintptr, flags uint32, para uintptr) (handle Handle, err error) [failretval==InvalidHandle] = crypt32.CertOpenStore |
| 259 | //sys CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) [failretval==nil] = crypt32.CertEnumCertificatesInStore |
| 260 | //sys CertAddCertificateContextToStore(store Handle, certContext *CertContext, addDisposition uint32, storeContext **CertContext) (err error) = crypt32.CertAddCertificateContextToStore |
| 261 | //sys CertCloseStore(store Handle, flags uint32) (err error) = crypt32.CertCloseStore |
| 262 | //sys CertGetCertificateChain(engine Handle, leaf *CertContext, time *Filetime, additionalStore Handle, para *CertChainPara, flags uint32, reserved uintptr, chainCtx **CertChainContext) (err error) = crypt32.CertGetCertificateChain |
| 263 | //sys CertFreeCertificateChain(ctx *CertChainContext) = crypt32.CertFreeCertificateChain |
| 264 | //sys CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, encodedLen uint32) (context *CertContext, err error) [failretval==nil] = crypt32.CertCreateCertificateContext |
| 265 | //sys CertFreeCertificateContext(ctx *CertContext) (err error) = crypt32.CertFreeCertificateContext |
| 266 | //sys CertVerifyCertificateChainPolicy(policyOID uintptr, chain *CertChainContext, para *CertChainPolicyPara, status *CertChainPolicyStatus) (err error) = crypt32.CertVerifyCertificateChainPolicy |
| 267 | //sys RegOpenKeyEx(key Handle, subkey *uint16, options uint32, desiredAccess uint32, result *Handle) (regerrno error) = advapi32.RegOpenKeyExW |
| 268 | //sys RegCloseKey(key Handle) (regerrno error) = advapi32.RegCloseKey |
| 269 | //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 |
| 270 | //sys RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW |
| 271 | //sys RegQueryValueEx(key Handle, name *uint16, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegQueryValueExW |
| 272 | //sys GetCurrentProcessId() (pid uint32) = kernel32.GetCurrentProcessId |
| 273 | //sys GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode |
| 274 | //sys SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode |
| 275 | //sys GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo |
| 276 | //sys WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW |
| 277 | //sys ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW |
| 278 | //sys CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot |
| 279 | //sys Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32FirstW |
| 280 | //sys Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32NextW |
| 281 | //sys Thread32First(snapshot Handle, threadEntry *ThreadEntry32) (err error) |
| 282 | //sys Thread32Next(snapshot Handle, threadEntry *ThreadEntry32) (err error) |
| 283 | //sys DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBufferSize uint32, outBuffer *byte, outBufferSize uint32, bytesReturned *uint32, overlapped *Overlapped) (err error) |
| 284 | // This function returns 1 byte BOOLEAN rather than the 4 byte BOOL. |
| 285 | //sys CreateSymbolicLink(symlinkfilename *uint16, targetfilename *uint16, flags uint32) (err error) [failretval&0xff==0] = CreateSymbolicLinkW |
| 286 | //sys CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr) (err error) [failretval&0xff==0] = CreateHardLinkW |
| 287 | //sys GetCurrentThreadId() (id uint32) |
| 288 | //sys CreateEvent(eventAttrs *SecurityAttributes, manualReset uint32, initialState uint32, name *uint16) (handle Handle, err error) = kernel32.CreateEventW |
| 289 | //sys CreateEventEx(eventAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) = kernel32.CreateEventExW |
| 290 | //sys OpenEvent(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenEventW |
| 291 | //sys SetEvent(event Handle) (err error) = kernel32.SetEvent |
| 292 | //sys ResetEvent(event Handle) (err error) = kernel32.ResetEvent |
| 293 | //sys PulseEvent(event Handle) (err error) = kernel32.PulseEvent |
| 294 | //sys CreateMutex(mutexAttrs *SecurityAttributes, initialOwner bool, name *uint16) (handle Handle, err error) = kernel32.CreateMutexW |
| 295 | //sys CreateMutexEx(mutexAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) = kernel32.CreateMutexExW |
| 296 | //sys OpenMutex(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenMutexW |
| 297 | //sys ReleaseMutex(mutex Handle) (err error) = kernel32.ReleaseMutex |
| 298 | //sys SleepEx(milliseconds uint32, alertable bool) (ret uint32) = kernel32.SleepEx |
| 299 | //sys CreateJobObject(jobAttr *SecurityAttributes, name *uint16) (handle Handle, err error) = kernel32.CreateJobObjectW |
| 300 | //sys AssignProcessToJobObject(job Handle, process Handle) (err error) = kernel32.AssignProcessToJobObject |
| 301 | //sys TerminateJobObject(job Handle, exitCode uint32) (err error) = kernel32.TerminateJobObject |
| 302 | //sys SetErrorMode(mode uint32) (ret uint32) = kernel32.SetErrorMode |
| 303 | //sys ResumeThread(thread Handle) (ret uint32, err error) [failretval==0xffffffff] = kernel32.ResumeThread |
| 304 | //sys SetPriorityClass(process Handle, priorityClass uint32) (err error) = kernel32.SetPriorityClass |
| 305 | //sys GetPriorityClass(process Handle) (ret uint32, err error) = kernel32.GetPriorityClass |
| 306 | //sys SetInformationJobObject(job Handle, JobObjectInformationClass uint32, JobObjectInformation uintptr, JobObjectInformationLength uint32) (ret int, err error) |
| 307 | //sys GenerateConsoleCtrlEvent(ctrlEvent uint32, processGroupID uint32) (err error) |
| 308 | //sys GetProcessId(process Handle) (id uint32, err error) |
| 309 | //sys OpenThread(desiredAccess uint32, inheritHandle bool, threadId uint32) (handle Handle, err error) |
| 310 | //sys SetProcessPriorityBoost(process Handle, disable bool) (err error) = kernel32.SetProcessPriorityBoost |
| 311 | //sys GetProcessWorkingSetSizeEx(hProcess Handle, lpMinimumWorkingSetSize *uintptr, lpMaximumWorkingSetSize *uintptr, flags *uint32) |
| 312 | //sys SetProcessWorkingSetSizeEx(hProcess Handle, dwMinimumWorkingSetSize uintptr, dwMaximumWorkingSetSize uintptr, flags uint32) (err error) |
| 313 | |
| 314 | // Volume Management Functions |
| 315 | //sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW |
| 316 | //sys DeleteVolumeMountPoint(volumeMountPoint *uint16) (err error) = DeleteVolumeMountPointW |
| 317 | //sys FindFirstVolume(volumeName *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeW |
| 318 | //sys FindFirstVolumeMountPoint(rootPathName *uint16, volumeMountPoint *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeMountPointW |
| 319 | //sys FindNextVolume(findVolume Handle, volumeName *uint16, bufferLength uint32) (err error) = FindNextVolumeW |
| 320 | //sys FindNextVolumeMountPoint(findVolumeMountPoint Handle, volumeMountPoint *uint16, bufferLength uint32) (err error) = FindNextVolumeMountPointW |
| 321 | //sys FindVolumeClose(findVolume Handle) (err error) |
| 322 | //sys FindVolumeMountPointClose(findVolumeMountPoint Handle) (err error) |
| 323 | //sys GetDiskFreeSpaceEx(directoryName *uint16, freeBytesAvailableToCaller *uint64, totalNumberOfBytes *uint64, totalNumberOfFreeBytes *uint64) (err error) = GetDiskFreeSpaceExW |
| 324 | //sys GetDriveType(rootPathName *uint16) (driveType uint32) = GetDriveTypeW |
| 325 | //sys GetLogicalDrives() (drivesBitMask uint32, err error) [failretval==0] |
| 326 | //sys GetLogicalDriveStrings(bufferLength uint32, buffer *uint16) (n uint32, err error) [failretval==0] = GetLogicalDriveStringsW |
| 327 | //sys GetVolumeInformation(rootPathName *uint16, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationW |
| 328 | //sys GetVolumeInformationByHandle(file Handle, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationByHandleW |
| 329 | //sys GetVolumeNameForVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16, bufferlength uint32) (err error) = GetVolumeNameForVolumeMountPointW |
| 330 | //sys GetVolumePathName(fileName *uint16, volumePathName *uint16, bufferLength uint32) (err error) = GetVolumePathNameW |
| 331 | //sys GetVolumePathNamesForVolumeName(volumeName *uint16, volumePathNames *uint16, bufferLength uint32, returnLength *uint32) (err error) = GetVolumePathNamesForVolumeNameW |
| 332 | //sys QueryDosDevice(deviceName *uint16, targetPath *uint16, max uint32) (n uint32, err error) [failretval==0] = QueryDosDeviceW |
| 333 | //sys SetVolumeLabel(rootPathName *uint16, volumeName *uint16) (err error) = SetVolumeLabelW |
| 334 | //sys SetVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16) (err error) = SetVolumeMountPointW |
| 335 | //sys MessageBox(hwnd Handle, text *uint16, caption *uint16, boxtype uint32) (ret int32, err error) [failretval==0] = user32.MessageBoxW |
| 336 | //sys ExitWindowsEx(flags uint32, reason uint32) (err error) = user32.ExitWindowsEx |
| 337 | //sys InitiateSystemShutdownEx(machineName *uint16, message *uint16, timeout uint32, forceAppsClosed bool, rebootAfterShutdown bool, reason uint32) (err error) = advapi32.InitiateSystemShutdownExW |
| 338 | //sys SetProcessShutdownParameters(level uint32, flags uint32) (err error) = kernel32.SetProcessShutdownParameters |
| 339 | //sys GetProcessShutdownParameters(level *uint32, flags *uint32) (err error) = kernel32.GetProcessShutdownParameters |
| 340 | //sys clsidFromString(lpsz *uint16, pclsid *GUID) (ret error) = ole32.CLSIDFromString |
| 341 | //sys stringFromGUID2(rguid *GUID, lpsz *uint16, cchMax int32) (chars int32) = ole32.StringFromGUID2 |
| 342 | //sys coCreateGuid(pguid *GUID) (ret error) = ole32.CoCreateGuid |
| 343 | //sys CoTaskMemFree(address unsafe.Pointer) = ole32.CoTaskMemFree |
| 344 | //sys rtlGetVersion(info *OsVersionInfoEx) (ret error) = ntdll.RtlGetVersion |
| 345 | //sys rtlGetNtVersionNumbers(majorVersion *uint32, minorVersion *uint32, buildNumber *uint32) = ntdll.RtlGetNtVersionNumbers |
| 346 | //sys getProcessPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetProcessPreferredUILanguages |
| 347 | //sys getThreadPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetThreadPreferredUILanguages |
| 348 | //sys getUserPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetUserPreferredUILanguages |
| 349 | //sys getSystemPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetSystemPreferredUILanguages |
| 350 | |
| 351 | // Process Status API (PSAPI) |
| 352 | //sys EnumProcesses(processIds []uint32, bytesReturned *uint32) (err error) = psapi.EnumProcesses |
| 353 | |
| 354 | // syscall interface implementation for other packages |
| 355 | |
| 356 | // GetCurrentProcess returns the handle for the current process. |
| 357 | // It is a pseudo handle that does not need to be closed. |
| 358 | // The returned error is always nil. |
| 359 | // |
| 360 | // Deprecated: use CurrentProcess for the same Handle without the nil |
| 361 | // error. |
| 362 | func GetCurrentProcess() (Handle, error) { |
| 363 | return CurrentProcess(), nil |
| 364 | } |
| 365 | |
| 366 | // CurrentProcess returns the handle for the current process. |
| 367 | // It is a pseudo handle that does not need to be closed. |
| 368 | func CurrentProcess() Handle { return Handle(^uintptr(1 - 1)) } |
| 369 | |
| 370 | // GetCurrentThread returns the handle for the current thread. |
| 371 | // It is a pseudo handle that does not need to be closed. |
| 372 | // The returned error is always nil. |
| 373 | // |
| 374 | // Deprecated: use CurrentThread for the same Handle without the nil |
| 375 | // error. |
| 376 | func GetCurrentThread() (Handle, error) { |
| 377 | return CurrentThread(), nil |
| 378 | } |
| 379 | |
| 380 | // CurrentThread returns the handle for the current thread. |
| 381 | // It is a pseudo handle that does not need to be closed. |
| 382 | func CurrentThread() Handle { return Handle(^uintptr(2 - 1)) } |
| 383 | |
| 384 | // GetProcAddressByOrdinal retrieves the address of the exported |
| 385 | // function from module by ordinal. |
| 386 | func GetProcAddressByOrdinal(module Handle, ordinal uintptr) (proc uintptr, err error) { |
| 387 | r0, _, e1 := syscall.Syscall(procGetProcAddress.Addr(), 2, uintptr(module), ordinal, 0) |
| 388 | proc = uintptr(r0) |
| 389 | if proc == 0 { |
| 390 | if e1 != 0 { |
| 391 | err = errnoErr(e1) |
| 392 | } else { |
| 393 | err = syscall.EINVAL |
| 394 | } |
| 395 | } |
| 396 | return |
| 397 | } |
| 398 | |
| 399 | func Exit(code int) { ExitProcess(uint32(code)) } |
| 400 | |
| 401 | func makeInheritSa() *SecurityAttributes { |
| 402 | var sa SecurityAttributes |
| 403 | sa.Length = uint32(unsafe.Sizeof(sa)) |
| 404 | sa.InheritHandle = 1 |
| 405 | return &sa |
| 406 | } |
| 407 | |
| 408 | func Open(path string, mode int, perm uint32) (fd Handle, err error) { |
| 409 | if len(path) == 0 { |
| 410 | return InvalidHandle, ERROR_FILE_NOT_FOUND |
| 411 | } |
| 412 | pathp, err := UTF16PtrFromString(path) |
| 413 | if err != nil { |
| 414 | return InvalidHandle, err |
| 415 | } |
| 416 | var access uint32 |
| 417 | switch mode & (O_RDONLY | O_WRONLY | O_RDWR) { |
| 418 | case O_RDONLY: |
| 419 | access = GENERIC_READ |
| 420 | case O_WRONLY: |
| 421 | access = GENERIC_WRITE |
| 422 | case O_RDWR: |
| 423 | access = GENERIC_READ | GENERIC_WRITE |
| 424 | } |
| 425 | if mode&O_CREAT != 0 { |
| 426 | access |= GENERIC_WRITE |
| 427 | } |
| 428 | if mode&O_APPEND != 0 { |
| 429 | access &^= GENERIC_WRITE |
| 430 | access |= FILE_APPEND_DATA |
| 431 | } |
| 432 | sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE) |
| 433 | var sa *SecurityAttributes |
| 434 | if mode&O_CLOEXEC == 0 { |
| 435 | sa = makeInheritSa() |
| 436 | } |
| 437 | var createmode uint32 |
| 438 | switch { |
| 439 | case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL): |
| 440 | createmode = CREATE_NEW |
| 441 | case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC): |
| 442 | createmode = CREATE_ALWAYS |
| 443 | case mode&O_CREAT == O_CREAT: |
| 444 | createmode = OPEN_ALWAYS |
| 445 | case mode&O_TRUNC == O_TRUNC: |
| 446 | createmode = TRUNCATE_EXISTING |
| 447 | default: |
| 448 | createmode = OPEN_EXISTING |
| 449 | } |
| 450 | var attrs uint32 = FILE_ATTRIBUTE_NORMAL |
| 451 | if perm&S_IWRITE == 0 { |
| 452 | attrs = FILE_ATTRIBUTE_READONLY |
| 453 | } |
| 454 | h, e := CreateFile(pathp, access, sharemode, sa, createmode, attrs, 0) |
| 455 | return h, e |
| 456 | } |
| 457 | |
| 458 | func Read(fd Handle, p []byte) (n int, err error) { |
| 459 | var done uint32 |
| 460 | e := ReadFile(fd, p, &done, nil) |
| 461 | if e != nil { |
| 462 | if e == ERROR_BROKEN_PIPE { |
| 463 | // NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin |
| 464 | return 0, nil |
| 465 | } |
| 466 | return 0, e |
| 467 | } |
| 468 | if raceenabled { |
| 469 | if done > 0 { |
| 470 | raceWriteRange(unsafe.Pointer(&p[0]), int(done)) |
| 471 | } |
| 472 | raceAcquire(unsafe.Pointer(&ioSync)) |
| 473 | } |
| 474 | return int(done), nil |
| 475 | } |
| 476 | |
| 477 | func Write(fd Handle, p []byte) (n int, err error) { |
| 478 | if raceenabled { |
| 479 | raceReleaseMerge(unsafe.Pointer(&ioSync)) |
| 480 | } |
| 481 | var done uint32 |
| 482 | e := WriteFile(fd, p, &done, nil) |
| 483 | if e != nil { |
| 484 | return 0, e |
| 485 | } |
| 486 | if raceenabled && done > 0 { |
| 487 | raceReadRange(unsafe.Pointer(&p[0]), int(done)) |
| 488 | } |
| 489 | return int(done), nil |
| 490 | } |
| 491 | |
| 492 | var ioSync int64 |
| 493 | |
| 494 | func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) { |
| 495 | var w uint32 |
| 496 | switch whence { |
| 497 | case 0: |
| 498 | w = FILE_BEGIN |
| 499 | case 1: |
| 500 | w = FILE_CURRENT |
| 501 | case 2: |
| 502 | w = FILE_END |
| 503 | } |
| 504 | hi := int32(offset >> 32) |
| 505 | lo := int32(offset) |
| 506 | // use GetFileType to check pipe, pipe can't do seek |
| 507 | ft, _ := GetFileType(fd) |
| 508 | if ft == FILE_TYPE_PIPE { |
| 509 | return 0, syscall.EPIPE |
| 510 | } |
| 511 | rlo, e := SetFilePointer(fd, lo, &hi, w) |
| 512 | if e != nil { |
| 513 | return 0, e |
| 514 | } |
| 515 | return int64(hi)<<32 + int64(rlo), nil |
| 516 | } |
| 517 | |
| 518 | func Close(fd Handle) (err error) { |
| 519 | return CloseHandle(fd) |
| 520 | } |
| 521 | |
| 522 | var ( |
| 523 | Stdin = getStdHandle(STD_INPUT_HANDLE) |
| 524 | Stdout = getStdHandle(STD_OUTPUT_HANDLE) |
| 525 | Stderr = getStdHandle(STD_ERROR_HANDLE) |
| 526 | ) |
| 527 | |
| 528 | func getStdHandle(stdhandle uint32) (fd Handle) { |
| 529 | r, _ := GetStdHandle(stdhandle) |
| 530 | CloseOnExec(r) |
| 531 | return r |
| 532 | } |
| 533 | |
| 534 | const ImplementsGetwd = true |
| 535 | |
| 536 | func Getwd() (wd string, err error) { |
| 537 | b := make([]uint16, 300) |
| 538 | n, e := GetCurrentDirectory(uint32(len(b)), &b[0]) |
| 539 | if e != nil { |
| 540 | return "", e |
| 541 | } |
| 542 | return string(utf16.Decode(b[0:n])), nil |
| 543 | } |
| 544 | |
| 545 | func Chdir(path string) (err error) { |
| 546 | pathp, err := UTF16PtrFromString(path) |
| 547 | if err != nil { |
| 548 | return err |
| 549 | } |
| 550 | return SetCurrentDirectory(pathp) |
| 551 | } |
| 552 | |
| 553 | func Mkdir(path string, mode uint32) (err error) { |
| 554 | pathp, err := UTF16PtrFromString(path) |
| 555 | if err != nil { |
| 556 | return err |
| 557 | } |
| 558 | return CreateDirectory(pathp, nil) |
| 559 | } |
| 560 | |
| 561 | func Rmdir(path string) (err error) { |
| 562 | pathp, err := UTF16PtrFromString(path) |
| 563 | if err != nil { |
| 564 | return err |
| 565 | } |
| 566 | return RemoveDirectory(pathp) |
| 567 | } |
| 568 | |
| 569 | func Unlink(path string) (err error) { |
| 570 | pathp, err := UTF16PtrFromString(path) |
| 571 | if err != nil { |
| 572 | return err |
| 573 | } |
| 574 | return DeleteFile(pathp) |
| 575 | } |
| 576 | |
| 577 | func Rename(oldpath, newpath string) (err error) { |
| 578 | from, err := UTF16PtrFromString(oldpath) |
| 579 | if err != nil { |
| 580 | return err |
| 581 | } |
| 582 | to, err := UTF16PtrFromString(newpath) |
| 583 | if err != nil { |
| 584 | return err |
| 585 | } |
| 586 | return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING) |
| 587 | } |
| 588 | |
| 589 | func ComputerName() (name string, err error) { |
| 590 | var n uint32 = MAX_COMPUTERNAME_LENGTH + 1 |
| 591 | b := make([]uint16, n) |
| 592 | e := GetComputerName(&b[0], &n) |
| 593 | if e != nil { |
| 594 | return "", e |
| 595 | } |
| 596 | return string(utf16.Decode(b[0:n])), nil |
| 597 | } |
| 598 | |
| 599 | func DurationSinceBoot() time.Duration { |
| 600 | return time.Duration(getTickCount64()) * time.Millisecond |
| 601 | } |
| 602 | |
| 603 | func Ftruncate(fd Handle, length int64) (err error) { |
| 604 | curoffset, e := Seek(fd, 0, 1) |
| 605 | if e != nil { |
| 606 | return e |
| 607 | } |
| 608 | defer Seek(fd, curoffset, 0) |
| 609 | _, e = Seek(fd, length, 0) |
| 610 | if e != nil { |
| 611 | return e |
| 612 | } |
| 613 | e = SetEndOfFile(fd) |
| 614 | if e != nil { |
| 615 | return e |
| 616 | } |
| 617 | return nil |
| 618 | } |
| 619 | |
| 620 | func Gettimeofday(tv *Timeval) (err error) { |
| 621 | var ft Filetime |
| 622 | GetSystemTimeAsFileTime(&ft) |
| 623 | *tv = NsecToTimeval(ft.Nanoseconds()) |
| 624 | return nil |
| 625 | } |
| 626 | |
| 627 | func Pipe(p []Handle) (err error) { |
| 628 | if len(p) != 2 { |
| 629 | return syscall.EINVAL |
| 630 | } |
| 631 | var r, w Handle |
| 632 | e := CreatePipe(&r, &w, makeInheritSa(), 0) |
| 633 | if e != nil { |
| 634 | return e |
| 635 | } |
| 636 | p[0] = r |
| 637 | p[1] = w |
| 638 | return nil |
| 639 | } |
| 640 | |
| 641 | func Utimes(path string, tv []Timeval) (err error) { |
| 642 | if len(tv) != 2 { |
| 643 | return syscall.EINVAL |
| 644 | } |
| 645 | pathp, e := UTF16PtrFromString(path) |
| 646 | if e != nil { |
| 647 | return e |
| 648 | } |
| 649 | h, e := CreateFile(pathp, |
| 650 | FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, |
| 651 | OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) |
| 652 | if e != nil { |
| 653 | return e |
| 654 | } |
| 655 | defer Close(h) |
| 656 | a := NsecToFiletime(tv[0].Nanoseconds()) |
| 657 | w := NsecToFiletime(tv[1].Nanoseconds()) |
| 658 | return SetFileTime(h, nil, &a, &w) |
| 659 | } |
| 660 | |
| 661 | func UtimesNano(path string, ts []Timespec) (err error) { |
| 662 | if len(ts) != 2 { |
| 663 | return syscall.EINVAL |
| 664 | } |
| 665 | pathp, e := UTF16PtrFromString(path) |
| 666 | if e != nil { |
| 667 | return e |
| 668 | } |
| 669 | h, e := CreateFile(pathp, |
| 670 | FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil, |
| 671 | OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0) |
| 672 | if e != nil { |
| 673 | return e |
| 674 | } |
| 675 | defer Close(h) |
| 676 | a := NsecToFiletime(TimespecToNsec(ts[0])) |
| 677 | w := NsecToFiletime(TimespecToNsec(ts[1])) |
| 678 | return SetFileTime(h, nil, &a, &w) |
| 679 | } |
| 680 | |
| 681 | func Fsync(fd Handle) (err error) { |
| 682 | return FlushFileBuffers(fd) |
| 683 | } |
| 684 | |
| 685 | func Chmod(path string, mode uint32) (err error) { |
| 686 | p, e := UTF16PtrFromString(path) |
| 687 | if e != nil { |
| 688 | return e |
| 689 | } |
| 690 | attrs, e := GetFileAttributes(p) |
| 691 | if e != nil { |
| 692 | return e |
| 693 | } |
| 694 | if mode&S_IWRITE != 0 { |
| 695 | attrs &^= FILE_ATTRIBUTE_READONLY |
| 696 | } else { |
| 697 | attrs |= FILE_ATTRIBUTE_READONLY |
| 698 | } |
| 699 | return SetFileAttributes(p, attrs) |
| 700 | } |
| 701 | |
| 702 | func LoadGetSystemTimePreciseAsFileTime() error { |
| 703 | return procGetSystemTimePreciseAsFileTime.Find() |
| 704 | } |
| 705 | |
| 706 | func LoadCancelIoEx() error { |
| 707 | return procCancelIoEx.Find() |
| 708 | } |
| 709 | |
| 710 | func LoadSetFileCompletionNotificationModes() error { |
| 711 | return procSetFileCompletionNotificationModes.Find() |
| 712 | } |
| 713 | |
| 714 | func WaitForMultipleObjects(handles []Handle, waitAll bool, waitMilliseconds uint32) (event uint32, err error) { |
| 715 | // Every other win32 array API takes arguments as "pointer, count", except for this function. So we |
| 716 | // can't declare it as a usual [] type, because mksyscall will use the opposite order. We therefore |
| 717 | // trivially stub this ourselves. |
| 718 | |
| 719 | var handlePtr *Handle |
| 720 | if len(handles) > 0 { |
| 721 | handlePtr = &handles[0] |
| 722 | } |
| 723 | return waitForMultipleObjects(uint32(len(handles)), uintptr(unsafe.Pointer(handlePtr)), waitAll, waitMilliseconds) |
| 724 | } |
| 725 | |
| 726 | // net api calls |
| 727 | |
| 728 | const socket_error = uintptr(^uint32(0)) |
| 729 | |
| 730 | //sys WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup |
| 731 | //sys WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup |
| 732 | //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 |
| 733 | //sys socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket |
| 734 | //sys sendto(s Handle, buf []byte, flags int32, to unsafe.Pointer, tolen int32) (err error) [failretval==socket_error] = ws2_32.sendto |
| 735 | //sys recvfrom(s Handle, buf []byte, flags int32, from *RawSockaddrAny, fromlen *int32) (n int32, err error) [failretval==-1] = ws2_32.recvfrom |
| 736 | //sys Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt |
| 737 | //sys Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt |
| 738 | //sys bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind |
| 739 | //sys connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect |
| 740 | //sys getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname |
| 741 | //sys getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername |
| 742 | //sys listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen |
| 743 | //sys shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown |
| 744 | //sys Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket |
| 745 | //sys AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx |
| 746 | //sys GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs |
| 747 | //sys WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv |
| 748 | //sys WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend |
| 749 | //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 |
| 750 | //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 |
| 751 | //sys GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname |
| 752 | //sys GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname |
| 753 | //sys Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs |
| 754 | //sys GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname |
| 755 | //sys DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W |
| 756 | //sys DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree |
| 757 | //sys DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W |
| 758 | //sys GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW |
| 759 | //sys FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW |
| 760 | //sys GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry |
| 761 | //sys GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo |
| 762 | //sys SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes |
| 763 | //sys WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW |
| 764 | //sys GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses |
| 765 | //sys GetACP() (acp uint32) = kernel32.GetACP |
| 766 | //sys MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar |
| 767 | |
| 768 | // For testing: clients can set this flag to force |
| 769 | // creation of IPv6 sockets to return EAFNOSUPPORT. |
| 770 | var SocketDisableIPv6 bool |
| 771 | |
| 772 | type RawSockaddrInet4 struct { |
| 773 | Family uint16 |
| 774 | Port uint16 |
| 775 | Addr [4]byte /* in_addr */ |
| 776 | Zero [8]uint8 |
| 777 | } |
| 778 | |
| 779 | type RawSockaddrInet6 struct { |
| 780 | Family uint16 |
| 781 | Port uint16 |
| 782 | Flowinfo uint32 |
| 783 | Addr [16]byte /* in6_addr */ |
| 784 | Scope_id uint32 |
| 785 | } |
| 786 | |
| 787 | type RawSockaddr struct { |
| 788 | Family uint16 |
| 789 | Data [14]int8 |
| 790 | } |
| 791 | |
| 792 | type RawSockaddrAny struct { |
| 793 | Addr RawSockaddr |
| 794 | Pad [100]int8 |
| 795 | } |
| 796 | |
| 797 | type Sockaddr interface { |
| 798 | sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs |
| 799 | } |
| 800 | |
| 801 | type SockaddrInet4 struct { |
| 802 | Port int |
| 803 | Addr [4]byte |
| 804 | raw RawSockaddrInet4 |
| 805 | } |
| 806 | |
| 807 | func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) { |
| 808 | if sa.Port < 0 || sa.Port > 0xFFFF { |
| 809 | return nil, 0, syscall.EINVAL |
| 810 | } |
| 811 | sa.raw.Family = AF_INET |
| 812 | p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) |
| 813 | p[0] = byte(sa.Port >> 8) |
| 814 | p[1] = byte(sa.Port) |
| 815 | for i := 0; i < len(sa.Addr); i++ { |
| 816 | sa.raw.Addr[i] = sa.Addr[i] |
| 817 | } |
| 818 | return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil |
| 819 | } |
| 820 | |
| 821 | type SockaddrInet6 struct { |
| 822 | Port int |
| 823 | ZoneId uint32 |
| 824 | Addr [16]byte |
| 825 | raw RawSockaddrInet6 |
| 826 | } |
| 827 | |
| 828 | func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) { |
| 829 | if sa.Port < 0 || sa.Port > 0xFFFF { |
| 830 | return nil, 0, syscall.EINVAL |
| 831 | } |
| 832 | sa.raw.Family = AF_INET6 |
| 833 | p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) |
| 834 | p[0] = byte(sa.Port >> 8) |
| 835 | p[1] = byte(sa.Port) |
| 836 | sa.raw.Scope_id = sa.ZoneId |
| 837 | for i := 0; i < len(sa.Addr); i++ { |
| 838 | sa.raw.Addr[i] = sa.Addr[i] |
| 839 | } |
| 840 | return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil |
| 841 | } |
| 842 | |
| 843 | type RawSockaddrUnix struct { |
| 844 | Family uint16 |
| 845 | Path [UNIX_PATH_MAX]int8 |
| 846 | } |
| 847 | |
| 848 | type SockaddrUnix struct { |
| 849 | Name string |
| 850 | raw RawSockaddrUnix |
| 851 | } |
| 852 | |
| 853 | func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) { |
| 854 | name := sa.Name |
| 855 | n := len(name) |
| 856 | if n > len(sa.raw.Path) { |
| 857 | return nil, 0, syscall.EINVAL |
| 858 | } |
| 859 | if n == len(sa.raw.Path) && name[0] != '@' { |
| 860 | return nil, 0, syscall.EINVAL |
| 861 | } |
| 862 | sa.raw.Family = AF_UNIX |
| 863 | for i := 0; i < n; i++ { |
| 864 | sa.raw.Path[i] = int8(name[i]) |
| 865 | } |
| 866 | // length is family (uint16), name, NUL. |
| 867 | sl := int32(2) |
| 868 | if n > 0 { |
| 869 | sl += int32(n) + 1 |
| 870 | } |
| 871 | if sa.raw.Path[0] == '@' { |
| 872 | sa.raw.Path[0] = 0 |
| 873 | // Don't count trailing NUL for abstract address. |
| 874 | sl-- |
| 875 | } |
| 876 | |
| 877 | return unsafe.Pointer(&sa.raw), sl, nil |
| 878 | } |
| 879 | |
| 880 | func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) { |
| 881 | switch rsa.Addr.Family { |
| 882 | case AF_UNIX: |
| 883 | pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) |
| 884 | sa := new(SockaddrUnix) |
| 885 | if pp.Path[0] == 0 { |
| 886 | // "Abstract" Unix domain socket. |
| 887 | // Rewrite leading NUL as @ for textual display. |
| 888 | // (This is the standard convention.) |
| 889 | // Not friendly to overwrite in place, |
| 890 | // but the callers below don't care. |
| 891 | pp.Path[0] = '@' |
| 892 | } |
| 893 | |
| 894 | // Assume path ends at NUL. |
| 895 | // This is not technically the Linux semantics for |
| 896 | // abstract Unix domain sockets--they are supposed |
| 897 | // to be uninterpreted fixed-size binary blobs--but |
| 898 | // everyone uses this convention. |
| 899 | n := 0 |
| 900 | for n < len(pp.Path) && pp.Path[n] != 0 { |
| 901 | n++ |
| 902 | } |
| 903 | bytes := (*[len(pp.Path)]byte)(unsafe.Pointer(&pp.Path[0]))[0:n] |
| 904 | sa.Name = string(bytes) |
| 905 | return sa, nil |
| 906 | |
| 907 | case AF_INET: |
| 908 | pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) |
| 909 | sa := new(SockaddrInet4) |
| 910 | p := (*[2]byte)(unsafe.Pointer(&pp.Port)) |
| 911 | sa.Port = int(p[0])<<8 + int(p[1]) |
| 912 | for i := 0; i < len(sa.Addr); i++ { |
| 913 | sa.Addr[i] = pp.Addr[i] |
| 914 | } |
| 915 | return sa, nil |
| 916 | |
| 917 | case AF_INET6: |
| 918 | pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) |
| 919 | sa := new(SockaddrInet6) |
| 920 | p := (*[2]byte)(unsafe.Pointer(&pp.Port)) |
| 921 | sa.Port = int(p[0])<<8 + int(p[1]) |
| 922 | sa.ZoneId = pp.Scope_id |
| 923 | for i := 0; i < len(sa.Addr); i++ { |
| 924 | sa.Addr[i] = pp.Addr[i] |
| 925 | } |
| 926 | return sa, nil |
| 927 | } |
| 928 | return nil, syscall.EAFNOSUPPORT |
| 929 | } |
| 930 | |
| 931 | func Socket(domain, typ, proto int) (fd Handle, err error) { |
| 932 | if domain == AF_INET6 && SocketDisableIPv6 { |
| 933 | return InvalidHandle, syscall.EAFNOSUPPORT |
| 934 | } |
| 935 | return socket(int32(domain), int32(typ), int32(proto)) |
| 936 | } |
| 937 | |
| 938 | func SetsockoptInt(fd Handle, level, opt int, value int) (err error) { |
| 939 | v := int32(value) |
| 940 | return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v))) |
| 941 | } |
| 942 | |
| 943 | func Bind(fd Handle, sa Sockaddr) (err error) { |
| 944 | ptr, n, err := sa.sockaddr() |
| 945 | if err != nil { |
| 946 | return err |
| 947 | } |
| 948 | return bind(fd, ptr, n) |
| 949 | } |
| 950 | |
| 951 | func Connect(fd Handle, sa Sockaddr) (err error) { |
| 952 | ptr, n, err := sa.sockaddr() |
| 953 | if err != nil { |
| 954 | return err |
| 955 | } |
| 956 | return connect(fd, ptr, n) |
| 957 | } |
| 958 | |
| 959 | func Getsockname(fd Handle) (sa Sockaddr, err error) { |
| 960 | var rsa RawSockaddrAny |
| 961 | l := int32(unsafe.Sizeof(rsa)) |
| 962 | if err = getsockname(fd, &rsa, &l); err != nil { |
| 963 | return |
| 964 | } |
| 965 | return rsa.Sockaddr() |
| 966 | } |
| 967 | |
| 968 | func Getpeername(fd Handle) (sa Sockaddr, err error) { |
| 969 | var rsa RawSockaddrAny |
| 970 | l := int32(unsafe.Sizeof(rsa)) |
| 971 | if err = getpeername(fd, &rsa, &l); err != nil { |
| 972 | return |
| 973 | } |
| 974 | return rsa.Sockaddr() |
| 975 | } |
| 976 | |
| 977 | func Listen(s Handle, n int) (err error) { |
| 978 | return listen(s, int32(n)) |
| 979 | } |
| 980 | |
| 981 | func Shutdown(fd Handle, how int) (err error) { |
| 982 | return shutdown(fd, int32(how)) |
| 983 | } |
| 984 | |
| 985 | func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) { |
| 986 | rsa, l, err := to.sockaddr() |
| 987 | if err != nil { |
| 988 | return err |
| 989 | } |
| 990 | return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine) |
| 991 | } |
| 992 | |
| 993 | func LoadGetAddrInfo() error { |
| 994 | return procGetAddrInfoW.Find() |
| 995 | } |
| 996 | |
| 997 | var connectExFunc struct { |
| 998 | once sync.Once |
| 999 | addr uintptr |
| 1000 | err error |
| 1001 | } |
| 1002 | |
| 1003 | func LoadConnectEx() error { |
| 1004 | connectExFunc.once.Do(func() { |
| 1005 | var s Handle |
| 1006 | s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) |
| 1007 | if connectExFunc.err != nil { |
| 1008 | return |
| 1009 | } |
| 1010 | defer CloseHandle(s) |
| 1011 | var n uint32 |
| 1012 | connectExFunc.err = WSAIoctl(s, |
| 1013 | SIO_GET_EXTENSION_FUNCTION_POINTER, |
| 1014 | (*byte)(unsafe.Pointer(&WSAID_CONNECTEX)), |
| 1015 | uint32(unsafe.Sizeof(WSAID_CONNECTEX)), |
| 1016 | (*byte)(unsafe.Pointer(&connectExFunc.addr)), |
| 1017 | uint32(unsafe.Sizeof(connectExFunc.addr)), |
| 1018 | &n, nil, 0) |
| 1019 | }) |
| 1020 | return connectExFunc.err |
| 1021 | } |
| 1022 | |
| 1023 | func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) { |
| 1024 | 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) |
| 1025 | if r1 == 0 { |
| 1026 | if e1 != 0 { |
| 1027 | err = error(e1) |
| 1028 | } else { |
| 1029 | err = syscall.EINVAL |
| 1030 | } |
| 1031 | } |
| 1032 | return |
| 1033 | } |
| 1034 | |
| 1035 | func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error { |
| 1036 | err := LoadConnectEx() |
| 1037 | if err != nil { |
| 1038 | return errorspkg.New("failed to find ConnectEx: " + err.Error()) |
| 1039 | } |
| 1040 | ptr, n, err := sa.sockaddr() |
| 1041 | if err != nil { |
| 1042 | return err |
| 1043 | } |
| 1044 | return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped) |
| 1045 | } |
| 1046 | |
| 1047 | var sendRecvMsgFunc struct { |
| 1048 | once sync.Once |
| 1049 | sendAddr uintptr |
| 1050 | recvAddr uintptr |
| 1051 | err error |
| 1052 | } |
| 1053 | |
| 1054 | func loadWSASendRecvMsg() error { |
| 1055 | sendRecvMsgFunc.once.Do(func() { |
| 1056 | var s Handle |
| 1057 | s, sendRecvMsgFunc.err = Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) |
| 1058 | if sendRecvMsgFunc.err != nil { |
| 1059 | return |
| 1060 | } |
| 1061 | defer CloseHandle(s) |
| 1062 | var n uint32 |
| 1063 | sendRecvMsgFunc.err = WSAIoctl(s, |
| 1064 | SIO_GET_EXTENSION_FUNCTION_POINTER, |
| 1065 | (*byte)(unsafe.Pointer(&WSAID_WSARECVMSG)), |
| 1066 | uint32(unsafe.Sizeof(WSAID_WSARECVMSG)), |
| 1067 | (*byte)(unsafe.Pointer(&sendRecvMsgFunc.recvAddr)), |
| 1068 | uint32(unsafe.Sizeof(sendRecvMsgFunc.recvAddr)), |
| 1069 | &n, nil, 0) |
| 1070 | if sendRecvMsgFunc.err != nil { |
| 1071 | return |
| 1072 | } |
| 1073 | sendRecvMsgFunc.err = WSAIoctl(s, |
| 1074 | SIO_GET_EXTENSION_FUNCTION_POINTER, |
| 1075 | (*byte)(unsafe.Pointer(&WSAID_WSASENDMSG)), |
| 1076 | uint32(unsafe.Sizeof(WSAID_WSASENDMSG)), |
| 1077 | (*byte)(unsafe.Pointer(&sendRecvMsgFunc.sendAddr)), |
| 1078 | uint32(unsafe.Sizeof(sendRecvMsgFunc.sendAddr)), |
| 1079 | &n, nil, 0) |
| 1080 | }) |
| 1081 | return sendRecvMsgFunc.err |
| 1082 | } |
| 1083 | |
| 1084 | func WSASendMsg(fd Handle, msg *WSAMsg, flags uint32, bytesSent *uint32, overlapped *Overlapped, croutine *byte) error { |
| 1085 | err := loadWSASendRecvMsg() |
| 1086 | if err != nil { |
| 1087 | return err |
| 1088 | } |
| 1089 | 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))) |
| 1090 | if r1 == socket_error { |
| 1091 | if e1 != 0 { |
| 1092 | err = errnoErr(e1) |
| 1093 | } else { |
| 1094 | err = syscall.EINVAL |
| 1095 | } |
| 1096 | } |
| 1097 | return err |
| 1098 | } |
| 1099 | |
| 1100 | func WSARecvMsg(fd Handle, msg *WSAMsg, bytesReceived *uint32, overlapped *Overlapped, croutine *byte) error { |
| 1101 | err := loadWSASendRecvMsg() |
| 1102 | if err != nil { |
| 1103 | return err |
| 1104 | } |
| 1105 | 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) |
| 1106 | if r1 == socket_error { |
| 1107 | if e1 != 0 { |
| 1108 | err = errnoErr(e1) |
| 1109 | } else { |
| 1110 | err = syscall.EINVAL |
| 1111 | } |
| 1112 | } |
| 1113 | return err |
| 1114 | } |
| 1115 | |
| 1116 | // Invented structures to support what package os expects. |
| 1117 | type Rusage struct { |
| 1118 | CreationTime Filetime |
| 1119 | ExitTime Filetime |
| 1120 | KernelTime Filetime |
| 1121 | UserTime Filetime |
| 1122 | } |
| 1123 | |
| 1124 | type WaitStatus struct { |
| 1125 | ExitCode uint32 |
| 1126 | } |
| 1127 | |
| 1128 | func (w WaitStatus) Exited() bool { return true } |
| 1129 | |
| 1130 | func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) } |
| 1131 | |
| 1132 | func (w WaitStatus) Signal() Signal { return -1 } |
| 1133 | |
| 1134 | func (w WaitStatus) CoreDump() bool { return false } |
| 1135 | |
| 1136 | func (w WaitStatus) Stopped() bool { return false } |
| 1137 | |
| 1138 | func (w WaitStatus) Continued() bool { return false } |
| 1139 | |
| 1140 | func (w WaitStatus) StopSignal() Signal { return -1 } |
| 1141 | |
| 1142 | func (w WaitStatus) Signaled() bool { return false } |
| 1143 | |
| 1144 | func (w WaitStatus) TrapCause() int { return -1 } |
| 1145 | |
| 1146 | // Timespec is an invented structure on Windows, but here for |
| 1147 | // consistency with the corresponding package for other operating systems. |
| 1148 | type Timespec struct { |
| 1149 | Sec int64 |
| 1150 | Nsec int64 |
| 1151 | } |
| 1152 | |
| 1153 | func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } |
| 1154 | |
| 1155 | func NsecToTimespec(nsec int64) (ts Timespec) { |
| 1156 | ts.Sec = nsec / 1e9 |
| 1157 | ts.Nsec = nsec % 1e9 |
| 1158 | return |
| 1159 | } |
| 1160 | |
| 1161 | // TODO(brainman): fix all needed for net |
| 1162 | |
| 1163 | func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS } |
| 1164 | |
| 1165 | func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) { |
| 1166 | var rsa RawSockaddrAny |
| 1167 | l := int32(unsafe.Sizeof(rsa)) |
| 1168 | n32, err := recvfrom(fd, p, int32(flags), &rsa, &l) |
| 1169 | n = int(n32) |
| 1170 | if err != nil { |
| 1171 | return |
| 1172 | } |
| 1173 | from, err = rsa.Sockaddr() |
| 1174 | return |
| 1175 | } |
| 1176 | |
| 1177 | func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) { |
| 1178 | ptr, l, err := to.sockaddr() |
| 1179 | if err != nil { |
| 1180 | return err |
| 1181 | } |
| 1182 | return sendto(fd, p, int32(flags), ptr, l) |
| 1183 | } |
| 1184 | |
| 1185 | func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS } |
| 1186 | |
| 1187 | // The Linger struct is wrong but we only noticed after Go 1. |
| 1188 | // sysLinger is the real system call structure. |
| 1189 | |
| 1190 | // BUG(brainman): The definition of Linger is not appropriate for direct use |
| 1191 | // with Setsockopt and Getsockopt. |
| 1192 | // Use SetsockoptLinger instead. |
| 1193 | |
| 1194 | type Linger struct { |
| 1195 | Onoff int32 |
| 1196 | Linger int32 |
| 1197 | } |
| 1198 | |
| 1199 | type sysLinger struct { |
| 1200 | Onoff uint16 |
| 1201 | Linger uint16 |
| 1202 | } |
| 1203 | |
| 1204 | type IPMreq struct { |
| 1205 | Multiaddr [4]byte /* in_addr */ |
| 1206 | Interface [4]byte /* in_addr */ |
| 1207 | } |
| 1208 | |
| 1209 | type IPv6Mreq struct { |
| 1210 | Multiaddr [16]byte /* in6_addr */ |
| 1211 | Interface uint32 |
| 1212 | } |
| 1213 | |
| 1214 | func GetsockoptInt(fd Handle, level, opt int) (int, error) { |
| 1215 | v := int32(0) |
| 1216 | l := int32(unsafe.Sizeof(v)) |
| 1217 | err := Getsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), &l) |
| 1218 | return int(v), err |
| 1219 | } |
| 1220 | |
| 1221 | func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) { |
| 1222 | sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)} |
| 1223 | return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys))) |
| 1224 | } |
| 1225 | |
| 1226 | func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) { |
| 1227 | return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4) |
| 1228 | } |
| 1229 | func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) { |
| 1230 | return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq))) |
| 1231 | } |
| 1232 | func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) { |
| 1233 | return syscall.EWINDOWS |
| 1234 | } |
| 1235 | |
| 1236 | func Getpid() (pid int) { return int(GetCurrentProcessId()) } |
| 1237 | |
| 1238 | func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) { |
| 1239 | // NOTE(rsc): The Win32finddata struct is wrong for the system call: |
| 1240 | // the two paths are each one uint16 short. Use the correct struct, |
| 1241 | // a win32finddata1, and then copy the results out. |
| 1242 | // There is no loss of expressivity here, because the final |
| 1243 | // uint16, if it is used, is supposed to be a NUL, and Go doesn't need that. |
| 1244 | // For Go 1.1, we might avoid the allocation of win32finddata1 here |
| 1245 | // by adding a final Bug [2]uint16 field to the struct and then |
| 1246 | // adjusting the fields in the result directly. |
| 1247 | var data1 win32finddata1 |
| 1248 | handle, err = findFirstFile1(name, &data1) |
| 1249 | if err == nil { |
| 1250 | copyFindData(data, &data1) |
| 1251 | } |
| 1252 | return |
| 1253 | } |
| 1254 | |
| 1255 | func FindNextFile(handle Handle, data *Win32finddata) (err error) { |
| 1256 | var data1 win32finddata1 |
| 1257 | err = findNextFile1(handle, &data1) |
| 1258 | if err == nil { |
| 1259 | copyFindData(data, &data1) |
| 1260 | } |
| 1261 | return |
| 1262 | } |
| 1263 | |
| 1264 | func getProcessEntry(pid int) (*ProcessEntry32, error) { |
| 1265 | snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) |
| 1266 | if err != nil { |
| 1267 | return nil, err |
| 1268 | } |
| 1269 | defer CloseHandle(snapshot) |
| 1270 | var procEntry ProcessEntry32 |
| 1271 | procEntry.Size = uint32(unsafe.Sizeof(procEntry)) |
| 1272 | if err = Process32First(snapshot, &procEntry); err != nil { |
| 1273 | return nil, err |
| 1274 | } |
| 1275 | for { |
| 1276 | if procEntry.ProcessID == uint32(pid) { |
| 1277 | return &procEntry, nil |
| 1278 | } |
| 1279 | err = Process32Next(snapshot, &procEntry) |
| 1280 | if err != nil { |
| 1281 | return nil, err |
| 1282 | } |
| 1283 | } |
| 1284 | } |
| 1285 | |
| 1286 | func Getppid() (ppid int) { |
| 1287 | pe, err := getProcessEntry(Getpid()) |
| 1288 | if err != nil { |
| 1289 | return -1 |
| 1290 | } |
| 1291 | return int(pe.ParentProcessID) |
| 1292 | } |
| 1293 | |
| 1294 | // TODO(brainman): fix all needed for os |
| 1295 | func Fchdir(fd Handle) (err error) { return syscall.EWINDOWS } |
| 1296 | func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS } |
| 1297 | func Symlink(path, link string) (err error) { return syscall.EWINDOWS } |
| 1298 | |
| 1299 | func Fchmod(fd Handle, mode uint32) (err error) { return syscall.EWINDOWS } |
| 1300 | func Chown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } |
| 1301 | func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS } |
| 1302 | func Fchown(fd Handle, uid int, gid int) (err error) { return syscall.EWINDOWS } |
| 1303 | |
| 1304 | func Getuid() (uid int) { return -1 } |
| 1305 | func Geteuid() (euid int) { return -1 } |
| 1306 | func Getgid() (gid int) { return -1 } |
| 1307 | func Getegid() (egid int) { return -1 } |
| 1308 | func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS } |
| 1309 | |
| 1310 | type Signal int |
| 1311 | |
| 1312 | func (s Signal) Signal() {} |
| 1313 | |
| 1314 | func (s Signal) String() string { |
| 1315 | if 0 <= s && int(s) < len(signals) { |
| 1316 | str := signals[s] |
| 1317 | if str != "" { |
| 1318 | return str |
| 1319 | } |
| 1320 | } |
| 1321 | return "signal " + itoa(int(s)) |
| 1322 | } |
| 1323 | |
| 1324 | func LoadCreateSymbolicLink() error { |
| 1325 | return procCreateSymbolicLinkW.Find() |
| 1326 | } |
| 1327 | |
| 1328 | // Readlink returns the destination of the named symbolic link. |
| 1329 | func Readlink(path string, buf []byte) (n int, err error) { |
| 1330 | fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING, |
| 1331 | FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0) |
| 1332 | if err != nil { |
| 1333 | return -1, err |
| 1334 | } |
| 1335 | defer CloseHandle(fd) |
| 1336 | |
| 1337 | rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE) |
| 1338 | var bytesReturned uint32 |
| 1339 | err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil) |
| 1340 | if err != nil { |
| 1341 | return -1, err |
| 1342 | } |
| 1343 | |
| 1344 | rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0])) |
| 1345 | var s string |
| 1346 | switch rdb.ReparseTag { |
| 1347 | case IO_REPARSE_TAG_SYMLINK: |
| 1348 | data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) |
| 1349 | p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) |
| 1350 | s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) |
| 1351 | case IO_REPARSE_TAG_MOUNT_POINT: |
| 1352 | data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer)) |
| 1353 | p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0])) |
| 1354 | s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2]) |
| 1355 | default: |
| 1356 | // the path is not a symlink or junction but another type of reparse |
| 1357 | // point |
| 1358 | return -1, syscall.ENOENT |
| 1359 | } |
| 1360 | n = copy(buf, []byte(s)) |
| 1361 | |
| 1362 | return n, nil |
| 1363 | } |
| 1364 | |
| 1365 | // GUIDFromString parses a string in the form of |
| 1366 | // "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}" into a GUID. |
| 1367 | func GUIDFromString(str string) (GUID, error) { |
| 1368 | guid := GUID{} |
| 1369 | str16, err := syscall.UTF16PtrFromString(str) |
| 1370 | if err != nil { |
| 1371 | return guid, err |
| 1372 | } |
| 1373 | err = clsidFromString(str16, &guid) |
| 1374 | if err != nil { |
| 1375 | return guid, err |
| 1376 | } |
| 1377 | return guid, nil |
| 1378 | } |
| 1379 | |
| 1380 | // GenerateGUID creates a new random GUID. |
| 1381 | func GenerateGUID() (GUID, error) { |
| 1382 | guid := GUID{} |
| 1383 | err := coCreateGuid(&guid) |
| 1384 | if err != nil { |
| 1385 | return guid, err |
| 1386 | } |
| 1387 | return guid, nil |
| 1388 | } |
| 1389 | |
| 1390 | // String returns the canonical string form of the GUID, |
| 1391 | // in the form of "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}". |
| 1392 | func (guid GUID) String() string { |
| 1393 | var str [100]uint16 |
| 1394 | chars := stringFromGUID2(&guid, &str[0], int32(len(str))) |
| 1395 | if chars <= 1 { |
| 1396 | return "" |
| 1397 | } |
| 1398 | return string(utf16.Decode(str[:chars-1])) |
| 1399 | } |
| 1400 | |
| 1401 | // KnownFolderPath returns a well-known folder path for the current user, specified by one of |
| 1402 | // the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag. |
| 1403 | func KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) { |
| 1404 | return Token(0).KnownFolderPath(folderID, flags) |
| 1405 | } |
| 1406 | |
| 1407 | // KnownFolderPath returns a well-known folder path for the user token, specified by one of |
| 1408 | // the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag. |
| 1409 | func (t Token) KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) { |
| 1410 | var p *uint16 |
| 1411 | err := shGetKnownFolderPath(folderID, flags, t, &p) |
| 1412 | if err != nil { |
| 1413 | return "", err |
| 1414 | } |
| 1415 | defer CoTaskMemFree(unsafe.Pointer(p)) |
| 1416 | return UTF16PtrToString(p), nil |
| 1417 | } |
| 1418 | |
| 1419 | // RtlGetVersion returns the version of the underlying operating system, ignoring |
| 1420 | // manifest semantics but is affected by the application compatibility layer. |
| 1421 | func RtlGetVersion() *OsVersionInfoEx { |
| 1422 | info := &OsVersionInfoEx{} |
| 1423 | info.osVersionInfoSize = uint32(unsafe.Sizeof(*info)) |
| 1424 | // According to documentation, this function always succeeds. |
| 1425 | // The function doesn't even check the validity of the |
| 1426 | // osVersionInfoSize member. Disassembling ntdll.dll indicates |
| 1427 | // that the documentation is indeed correct about that. |
| 1428 | _ = rtlGetVersion(info) |
| 1429 | return info |
| 1430 | } |
| 1431 | |
| 1432 | // RtlGetNtVersionNumbers returns the version of the underlying operating system, |
| 1433 | // ignoring manifest semantics and the application compatibility layer. |
| 1434 | func RtlGetNtVersionNumbers() (majorVersion, minorVersion, buildNumber uint32) { |
| 1435 | rtlGetNtVersionNumbers(&majorVersion, &minorVersion, &buildNumber) |
| 1436 | buildNumber &= 0xffff |
| 1437 | return |
| 1438 | } |
| 1439 | |
| 1440 | // GetProcessPreferredUILanguages retrieves the process preferred UI languages. |
| 1441 | func GetProcessPreferredUILanguages(flags uint32) ([]string, error) { |
| 1442 | return getUILanguages(flags, getProcessPreferredUILanguages) |
| 1443 | } |
| 1444 | |
| 1445 | // GetThreadPreferredUILanguages retrieves the thread preferred UI languages for the current thread. |
| 1446 | func GetThreadPreferredUILanguages(flags uint32) ([]string, error) { |
| 1447 | return getUILanguages(flags, getThreadPreferredUILanguages) |
| 1448 | } |
| 1449 | |
| 1450 | // GetUserPreferredUILanguages retrieves information about the user preferred UI languages. |
| 1451 | func GetUserPreferredUILanguages(flags uint32) ([]string, error) { |
| 1452 | return getUILanguages(flags, getUserPreferredUILanguages) |
| 1453 | } |
| 1454 | |
| 1455 | // GetSystemPreferredUILanguages retrieves the system preferred UI languages. |
| 1456 | func GetSystemPreferredUILanguages(flags uint32) ([]string, error) { |
| 1457 | return getUILanguages(flags, getSystemPreferredUILanguages) |
| 1458 | } |
| 1459 | |
| 1460 | func getUILanguages(flags uint32, f func(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) error) ([]string, error) { |
| 1461 | size := uint32(128) |
| 1462 | for { |
| 1463 | var numLanguages uint32 |
| 1464 | buf := make([]uint16, size) |
| 1465 | err := f(flags, &numLanguages, &buf[0], &size) |
| 1466 | if err == ERROR_INSUFFICIENT_BUFFER { |
| 1467 | continue |
| 1468 | } |
| 1469 | if err != nil { |
| 1470 | return nil, err |
| 1471 | } |
| 1472 | buf = buf[:size] |
| 1473 | if numLanguages == 0 || len(buf) == 0 { // GetProcessPreferredUILanguages may return numLanguages==0 with "\0\0" |
| 1474 | return []string{}, nil |
| 1475 | } |
| 1476 | if buf[len(buf)-1] == 0 { |
| 1477 | buf = buf[:len(buf)-1] // remove terminating null |
| 1478 | } |
| 1479 | languages := make([]string, 0, numLanguages) |
| 1480 | from := 0 |
| 1481 | for i, c := range buf { |
| 1482 | if c == 0 { |
| 1483 | languages = append(languages, string(utf16.Decode(buf[from:i]))) |
| 1484 | from = i + 1 |
| 1485 | } |
| 1486 | } |
| 1487 | return languages, nil |
| 1488 | } |
| 1489 | } |