cubefs

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
	"fmt"
12
	"runtime"
13
	"sync"
14
	"syscall"
15
	"time"
16
	"unicode/utf16"
17
	"unsafe"
18

19
	"golang.org/x/sys/internal/unsafeheader"
20
)
21

22
type Handle uintptr
23
type HWND uintptr
24

25
const (
26
	InvalidHandle = ^Handle(0)
27
	InvalidHWND   = ^HWND(0)
28

29
	// Flags for DefineDosDevice.
30
	DDD_EXACT_MATCH_ON_REMOVE = 0x00000004
31
	DDD_NO_BROADCAST_SYSTEM   = 0x00000008
32
	DDD_RAW_TARGET_PATH       = 0x00000001
33
	DDD_REMOVE_DEFINITION     = 0x00000002
34

35
	// Return values for GetDriveType.
36
	DRIVE_UNKNOWN     = 0
37
	DRIVE_NO_ROOT_DIR = 1
38
	DRIVE_REMOVABLE   = 2
39
	DRIVE_FIXED       = 3
40
	DRIVE_REMOTE      = 4
41
	DRIVE_CDROM       = 5
42
	DRIVE_RAMDISK     = 6
43

44
	// File system flags from GetVolumeInformation and GetVolumeInformationByHandle.
45
	FILE_CASE_SENSITIVE_SEARCH        = 0x00000001
46
	FILE_CASE_PRESERVED_NAMES         = 0x00000002
47
	FILE_FILE_COMPRESSION             = 0x00000010
48
	FILE_DAX_VOLUME                   = 0x20000000
49
	FILE_NAMED_STREAMS                = 0x00040000
50
	FILE_PERSISTENT_ACLS              = 0x00000008
51
	FILE_READ_ONLY_VOLUME             = 0x00080000
52
	FILE_SEQUENTIAL_WRITE_ONCE        = 0x00100000
53
	FILE_SUPPORTS_ENCRYPTION          = 0x00020000
54
	FILE_SUPPORTS_EXTENDED_ATTRIBUTES = 0x00800000
55
	FILE_SUPPORTS_HARD_LINKS          = 0x00400000
56
	FILE_SUPPORTS_OBJECT_IDS          = 0x00010000
57
	FILE_SUPPORTS_OPEN_BY_FILE_ID     = 0x01000000
58
	FILE_SUPPORTS_REPARSE_POINTS      = 0x00000080
59
	FILE_SUPPORTS_SPARSE_FILES        = 0x00000040
60
	FILE_SUPPORTS_TRANSACTIONS        = 0x00200000
61
	FILE_SUPPORTS_USN_JOURNAL         = 0x02000000
62
	FILE_UNICODE_ON_DISK              = 0x00000004
63
	FILE_VOLUME_IS_COMPRESSED         = 0x00008000
64
	FILE_VOLUME_QUOTAS                = 0x00000020
65

66
	// Flags for LockFileEx.
67
	LOCKFILE_FAIL_IMMEDIATELY = 0x00000001
68
	LOCKFILE_EXCLUSIVE_LOCK   = 0x00000002
69

70
	// Return value of SleepEx and other APC functions
71
	WAIT_IO_COMPLETION = 0x000000C0
72
)
73

74
// StringToUTF16 is deprecated. Use UTF16FromString instead.
75
// If s contains a NUL byte this function panics instead of
76
// returning an error.
77
func StringToUTF16(s string) []uint16 {
78
	a, err := UTF16FromString(s)
79
	if err != nil {
80
		panic("windows: string with NUL passed to StringToUTF16")
81
	}
82
	return a
83
}
84

85
// UTF16FromString returns the UTF-16 encoding of the UTF-8 string
86
// s, with a terminating NUL added. If s contains a NUL byte at any
87
// location, it returns (nil, syscall.EINVAL).
88
func UTF16FromString(s string) ([]uint16, error) {
89
	return syscall.UTF16FromString(s)
90
}
91

92
// UTF16ToString returns the UTF-8 encoding of the UTF-16 sequence s,
93
// with a terminating NUL and any bytes after the NUL removed.
94
func UTF16ToString(s []uint16) string {
95
	return syscall.UTF16ToString(s)
96
}
97

98
// StringToUTF16Ptr is deprecated. Use UTF16PtrFromString instead.
99
// If s contains a NUL byte this function panics instead of
100
// returning an error.
101
func StringToUTF16Ptr(s string) *uint16 { return &StringToUTF16(s)[0] }
102

103
// UTF16PtrFromString returns pointer to the UTF-16 encoding of
104
// the UTF-8 string s, with a terminating NUL added. If s
105
// contains a NUL byte at any location, it returns (nil, syscall.EINVAL).
106
func UTF16PtrFromString(s string) (*uint16, error) {
107
	a, err := UTF16FromString(s)
108
	if err != nil {
109
		return nil, err
110
	}
111
	return &a[0], nil
112
}
113

114
// UTF16PtrToString takes a pointer to a UTF-16 sequence and returns the corresponding UTF-8 encoded string.
115
// If the pointer is nil, it returns the empty string. It assumes that the UTF-16 sequence is terminated
116
// at a zero word; if the zero word is not present, the program may crash.
117
func UTF16PtrToString(p *uint16) string {
118
	if p == nil {
119
		return ""
120
	}
121
	if *p == 0 {
122
		return ""
123
	}
124

125
	// Find NUL terminator.
126
	n := 0
127
	for ptr := unsafe.Pointer(p); *(*uint16)(ptr) != 0; n++ {
128
		ptr = unsafe.Pointer(uintptr(ptr) + unsafe.Sizeof(*p))
129
	}
130

131
	return string(utf16.Decode(unsafe.Slice(p, n)))
132
}
133

134
func Getpagesize() int { return 4096 }
135

136
// NewCallback converts a Go function to a function pointer conforming to the stdcall calling convention.
137
// This is useful when interoperating with Windows code requiring callbacks.
138
// 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.
139
func NewCallback(fn interface{}) uintptr {
140
	return syscall.NewCallback(fn)
141
}
142

143
// NewCallbackCDecl converts a Go function to a function pointer conforming to the cdecl calling convention.
144
// This is useful when interoperating with Windows code requiring callbacks.
145
// 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.
146
func NewCallbackCDecl(fn interface{}) uintptr {
147
	return syscall.NewCallbackCDecl(fn)
148
}
149

150
// windows api calls
151

152
//sys	GetLastError() (lasterr error)
153
//sys	LoadLibrary(libname string) (handle Handle, err error) = LoadLibraryW
154
//sys	LoadLibraryEx(libname string, zero Handle, flags uintptr) (handle Handle, err error) = LoadLibraryExW
155
//sys	FreeLibrary(handle Handle) (err error)
156
//sys	GetProcAddress(module Handle, procname string) (proc uintptr, err error)
157
//sys	GetModuleFileName(module Handle, filename *uint16, size uint32) (n uint32, err error) = kernel32.GetModuleFileNameW
158
//sys	GetModuleHandleEx(flags uint32, moduleName *uint16, module *Handle) (err error) = kernel32.GetModuleHandleExW
159
//sys	SetDefaultDllDirectories(directoryFlags uint32) (err error)
160
//sys	SetDllDirectory(path string) (err error) = kernel32.SetDllDirectoryW
161
//sys	GetVersion() (ver uint32, err error)
162
//sys	FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW
163
//sys	ExitProcess(exitcode uint32)
164
//sys	IsWow64Process(handle Handle, isWow64 *bool) (err error) = IsWow64Process
165
//sys	IsWow64Process2(handle Handle, processMachine *uint16, nativeMachine *uint16) (err error) = IsWow64Process2?
166
//sys	CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile Handle) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW
167
//sys	CreateNamedPipe(name *uint16, flags uint32, pipeMode uint32, maxInstances uint32, outSize uint32, inSize uint32, defaultTimeout uint32, sa *SecurityAttributes) (handle Handle, err error)  [failretval==InvalidHandle] = CreateNamedPipeW
168
//sys	ConnectNamedPipe(pipe Handle, overlapped *Overlapped) (err error)
169
//sys	GetNamedPipeInfo(pipe Handle, flags *uint32, outSize *uint32, inSize *uint32, maxInstances *uint32) (err error)
170
//sys	GetNamedPipeHandleState(pipe Handle, state *uint32, curInstances *uint32, maxCollectionCount *uint32, collectDataTimeout *uint32, userName *uint16, maxUserNameSize uint32) (err error) = GetNamedPipeHandleStateW
171
//sys	SetNamedPipeHandleState(pipe Handle, state *uint32, maxCollectionCount *uint32, collectDataTimeout *uint32) (err error) = SetNamedPipeHandleState
172
//sys	readFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) = ReadFile
173
//sys	writeFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) = WriteFile
174
//sys	GetOverlappedResult(handle Handle, overlapped *Overlapped, done *uint32, wait bool) (err error)
175
//sys	SetFilePointer(handle Handle, lowoffset int32, highoffsetptr *int32, whence uint32) (newlowoffset uint32, err error) [failretval==0xffffffff]
176
//sys	CloseHandle(handle Handle) (err error)
177
//sys	GetStdHandle(stdhandle uint32) (handle Handle, err error) [failretval==InvalidHandle]
178
//sys	SetStdHandle(stdhandle uint32, handle Handle) (err error)
179
//sys	findFirstFile1(name *uint16, data *win32finddata1) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstFileW
180
//sys	findNextFile1(handle Handle, data *win32finddata1) (err error) = FindNextFileW
181
//sys	FindClose(handle Handle) (err error)
182
//sys	GetFileInformationByHandle(handle Handle, data *ByHandleFileInformation) (err error)
183
//sys	GetFileInformationByHandleEx(handle Handle, class uint32, outBuffer *byte, outBufferLen uint32) (err error)
184
//sys	SetFileInformationByHandle(handle Handle, class uint32, inBuffer *byte, inBufferLen uint32) (err error)
185
//sys	GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, err error) = GetCurrentDirectoryW
186
//sys	SetCurrentDirectory(path *uint16) (err error) = SetCurrentDirectoryW
187
//sys	CreateDirectory(path *uint16, sa *SecurityAttributes) (err error) = CreateDirectoryW
188
//sys	RemoveDirectory(path *uint16) (err error) = RemoveDirectoryW
189
//sys	DeleteFile(path *uint16) (err error) = DeleteFileW
190
//sys	MoveFile(from *uint16, to *uint16) (err error) = MoveFileW
191
//sys	MoveFileEx(from *uint16, to *uint16, flags uint32) (err error) = MoveFileExW
192
//sys	LockFileEx(file Handle, flags uint32, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *Overlapped) (err error)
193
//sys	UnlockFileEx(file Handle, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *Overlapped) (err error)
194
//sys	GetComputerName(buf *uint16, n *uint32) (err error) = GetComputerNameW
195
//sys	GetComputerNameEx(nametype uint32, buf *uint16, n *uint32) (err error) = GetComputerNameExW
196
//sys	SetEndOfFile(handle Handle) (err error)
197
//sys	GetSystemTimeAsFileTime(time *Filetime)
198
//sys	GetSystemTimePreciseAsFileTime(time *Filetime)
199
//sys	GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff]
200
//sys	CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uintptr, threadcnt uint32) (handle Handle, err error)
201
//sys	GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uintptr, overlapped **Overlapped, timeout uint32) (err error)
202
//sys	PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uintptr, overlapped *Overlapped) (err error)
203
//sys	CancelIo(s Handle) (err error)
204
//sys	CancelIoEx(s Handle, o *Overlapped) (err error)
205
//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
206
//sys	CreateProcessAsUser(token Token, appName *uint16, commandLine *uint16, procSecurity *SecurityAttributes, threadSecurity *SecurityAttributes, inheritHandles bool, creationFlags uint32, env *uint16, currentDir *uint16, startupInfo *StartupInfo, outProcInfo *ProcessInformation) (err error) = advapi32.CreateProcessAsUserW
207
//sys   initializeProcThreadAttributeList(attrlist *ProcThreadAttributeList, attrcount uint32, flags uint32, size *uintptr) (err error) = InitializeProcThreadAttributeList
208
//sys   deleteProcThreadAttributeList(attrlist *ProcThreadAttributeList) = DeleteProcThreadAttributeList
209
//sys   updateProcThreadAttribute(attrlist *ProcThreadAttributeList, flags uint32, attr uintptr, value unsafe.Pointer, size uintptr, prevvalue unsafe.Pointer, returnedsize *uintptr) (err error) = UpdateProcThreadAttribute
210
//sys	OpenProcess(desiredAccess uint32, inheritHandle bool, processId uint32) (handle Handle, err error)
211
//sys	ShellExecute(hwnd Handle, verb *uint16, file *uint16, args *uint16, cwd *uint16, showCmd int32) (err error) [failretval<=32] = shell32.ShellExecuteW
212
//sys	GetWindowThreadProcessId(hwnd HWND, pid *uint32) (tid uint32, err error) = user32.GetWindowThreadProcessId
213
//sys	GetShellWindow() (shellWindow HWND) = user32.GetShellWindow
214
//sys	MessageBox(hwnd HWND, text *uint16, caption *uint16, boxtype uint32) (ret int32, err error) [failretval==0] = user32.MessageBoxW
215
//sys	ExitWindowsEx(flags uint32, reason uint32) (err error) = user32.ExitWindowsEx
216
//sys	shGetKnownFolderPath(id *KNOWNFOLDERID, flags uint32, token Token, path **uint16) (ret error) = shell32.SHGetKnownFolderPath
217
//sys	TerminateProcess(handle Handle, exitcode uint32) (err error)
218
//sys	GetExitCodeProcess(handle Handle, exitcode *uint32) (err error)
219
//sys	GetStartupInfo(startupInfo *StartupInfo) (err error) = GetStartupInfoW
220
//sys	GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error)
221
//sys	DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error)
222
//sys	WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff]
223
//sys	waitForMultipleObjects(count uint32, handles uintptr, waitAll bool, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] = WaitForMultipleObjects
224
//sys	GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW
225
//sys	CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error)
226
//sys	GetFileType(filehandle Handle) (n uint32, err error)
227
//sys	CryptAcquireContext(provhandle *Handle, container *uint16, provider *uint16, provtype uint32, flags uint32) (err error) = advapi32.CryptAcquireContextW
228
//sys	CryptReleaseContext(provhandle Handle, flags uint32) (err error) = advapi32.CryptReleaseContext
229
//sys	CryptGenRandom(provhandle Handle, buflen uint32, buf *byte) (err error) = advapi32.CryptGenRandom
230
//sys	GetEnvironmentStrings() (envs *uint16, err error) [failretval==nil] = kernel32.GetEnvironmentStringsW
231
//sys	FreeEnvironmentStrings(envs *uint16) (err error) = kernel32.FreeEnvironmentStringsW
232
//sys	GetEnvironmentVariable(name *uint16, buffer *uint16, size uint32) (n uint32, err error) = kernel32.GetEnvironmentVariableW
233
//sys	SetEnvironmentVariable(name *uint16, value *uint16) (err error) = kernel32.SetEnvironmentVariableW
234
//sys	ExpandEnvironmentStrings(src *uint16, dst *uint16, size uint32) (n uint32, err error) = kernel32.ExpandEnvironmentStringsW
235
//sys	CreateEnvironmentBlock(block **uint16, token Token, inheritExisting bool) (err error) = userenv.CreateEnvironmentBlock
236
//sys	DestroyEnvironmentBlock(block *uint16) (err error) = userenv.DestroyEnvironmentBlock
237
//sys	getTickCount64() (ms uint64) = kernel32.GetTickCount64
238
//sys	SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error)
239
//sys	GetFileAttributes(name *uint16) (attrs uint32, err error) [failretval==INVALID_FILE_ATTRIBUTES] = kernel32.GetFileAttributesW
240
//sys	SetFileAttributes(name *uint16, attrs uint32) (err error) = kernel32.SetFileAttributesW
241
//sys	GetFileAttributesEx(name *uint16, level uint32, info *byte) (err error) = kernel32.GetFileAttributesExW
242
//sys	GetCommandLine() (cmd *uint16) = kernel32.GetCommandLineW
243
//sys	CommandLineToArgv(cmd *uint16, argc *int32) (argv *[8192]*[8192]uint16, err error) [failretval==nil] = shell32.CommandLineToArgvW
244
//sys	LocalFree(hmem Handle) (handle Handle, err error) [failretval!=0]
245
//sys	LocalAlloc(flags uint32, length uint32) (ptr uintptr, err error)
246
//sys	SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error)
247
//sys	FlushFileBuffers(handle Handle) (err error)
248
//sys	GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, err error) = kernel32.GetFullPathNameW
249
//sys	GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err error) = kernel32.GetLongPathNameW
250
//sys	GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW
251
//sys	GetFinalPathNameByHandle(file Handle, filePath *uint16, filePathSize uint32, flags uint32) (n uint32, err error) = kernel32.GetFinalPathNameByHandleW
252
//sys	CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) [failretval == 0 || e1 == ERROR_ALREADY_EXISTS] = kernel32.CreateFileMappingW
253
//sys	MapViewOfFile(handle Handle, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, err error)
254
//sys	UnmapViewOfFile(addr uintptr) (err error)
255
//sys	FlushViewOfFile(addr uintptr, length uintptr) (err error)
256
//sys	VirtualLock(addr uintptr, length uintptr) (err error)
257
//sys	VirtualUnlock(addr uintptr, length uintptr) (err error)
258
//sys	VirtualAlloc(address uintptr, size uintptr, alloctype uint32, protect uint32) (value uintptr, err error) = kernel32.VirtualAlloc
259
//sys	VirtualFree(address uintptr, size uintptr, freetype uint32) (err error) = kernel32.VirtualFree
260
//sys	VirtualProtect(address uintptr, size uintptr, newprotect uint32, oldprotect *uint32) (err error) = kernel32.VirtualProtect
261
//sys	VirtualProtectEx(process Handle, address uintptr, size uintptr, newProtect uint32, oldProtect *uint32) (err error) = kernel32.VirtualProtectEx
262
//sys	VirtualQuery(address uintptr, buffer *MemoryBasicInformation, length uintptr) (err error) = kernel32.VirtualQuery
263
//sys	VirtualQueryEx(process Handle, address uintptr, buffer *MemoryBasicInformation, length uintptr) (err error) = kernel32.VirtualQueryEx
264
//sys	ReadProcessMemory(process Handle, baseAddress uintptr, buffer *byte, size uintptr, numberOfBytesRead *uintptr) (err error) = kernel32.ReadProcessMemory
265
//sys	WriteProcessMemory(process Handle, baseAddress uintptr, buffer *byte, size uintptr, numberOfBytesWritten *uintptr) (err error) = kernel32.WriteProcessMemory
266
//sys	TransmitFile(s Handle, handle Handle, bytesToWrite uint32, bytsPerSend uint32, overlapped *Overlapped, transmitFileBuf *TransmitFileBuffers, flags uint32) (err error) = mswsock.TransmitFile
267
//sys	ReadDirectoryChanges(handle Handle, buf *byte, buflen uint32, watchSubTree bool, mask uint32, retlen *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) = kernel32.ReadDirectoryChangesW
268
//sys	FindFirstChangeNotification(path string, watchSubtree bool, notifyFilter uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.FindFirstChangeNotificationW
269
//sys	FindNextChangeNotification(handle Handle) (err error)
270
//sys	FindCloseChangeNotification(handle Handle) (err error)
271
//sys	CertOpenSystemStore(hprov Handle, name *uint16) (store Handle, err error) = crypt32.CertOpenSystemStoreW
272
//sys	CertOpenStore(storeProvider uintptr, msgAndCertEncodingType uint32, cryptProv uintptr, flags uint32, para uintptr) (handle Handle, err error) = crypt32.CertOpenStore
273
//sys	CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) [failretval==nil] = crypt32.CertEnumCertificatesInStore
274
//sys	CertAddCertificateContextToStore(store Handle, certContext *CertContext, addDisposition uint32, storeContext **CertContext) (err error) = crypt32.CertAddCertificateContextToStore
275
//sys	CertCloseStore(store Handle, flags uint32) (err error) = crypt32.CertCloseStore
276
//sys	CertDeleteCertificateFromStore(certContext *CertContext) (err error) = crypt32.CertDeleteCertificateFromStore
277
//sys	CertDuplicateCertificateContext(certContext *CertContext) (dupContext *CertContext) = crypt32.CertDuplicateCertificateContext
278
//sys	PFXImportCertStore(pfx *CryptDataBlob, password *uint16, flags uint32) (store Handle, err error) = crypt32.PFXImportCertStore
279
//sys	CertGetCertificateChain(engine Handle, leaf *CertContext, time *Filetime, additionalStore Handle, para *CertChainPara, flags uint32, reserved uintptr, chainCtx **CertChainContext) (err error) = crypt32.CertGetCertificateChain
280
//sys	CertFreeCertificateChain(ctx *CertChainContext) = crypt32.CertFreeCertificateChain
281
//sys	CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, encodedLen uint32) (context *CertContext, err error) [failretval==nil] = crypt32.CertCreateCertificateContext
282
//sys	CertFreeCertificateContext(ctx *CertContext) (err error) = crypt32.CertFreeCertificateContext
283
//sys	CertVerifyCertificateChainPolicy(policyOID uintptr, chain *CertChainContext, para *CertChainPolicyPara, status *CertChainPolicyStatus) (err error) = crypt32.CertVerifyCertificateChainPolicy
284
//sys	CertGetNameString(certContext *CertContext, nameType uint32, flags uint32, typePara unsafe.Pointer, name *uint16, size uint32) (chars uint32) = crypt32.CertGetNameStringW
285
//sys	CertFindExtension(objId *byte, countExtensions uint32, extensions *CertExtension) (ret *CertExtension) = crypt32.CertFindExtension
286
//sys   CertFindCertificateInStore(store Handle, certEncodingType uint32, findFlags uint32, findType uint32, findPara unsafe.Pointer, prevCertContext *CertContext) (cert *CertContext, err error) [failretval==nil] = crypt32.CertFindCertificateInStore
287
//sys   CertFindChainInStore(store Handle, certEncodingType uint32, findFlags uint32, findType uint32, findPara unsafe.Pointer, prevChainContext *CertChainContext) (certchain *CertChainContext, err error) [failretval==nil] = crypt32.CertFindChainInStore
288
//sys   CryptAcquireCertificatePrivateKey(cert *CertContext, flags uint32, parameters unsafe.Pointer, cryptProvOrNCryptKey *Handle, keySpec *uint32, callerFreeProvOrNCryptKey *bool) (err error) = crypt32.CryptAcquireCertificatePrivateKey
289
//sys	CryptQueryObject(objectType uint32, object unsafe.Pointer, expectedContentTypeFlags uint32, expectedFormatTypeFlags uint32, flags uint32, msgAndCertEncodingType *uint32, contentType *uint32, formatType *uint32, certStore *Handle, msg *Handle, context *unsafe.Pointer) (err error) = crypt32.CryptQueryObject
290
//sys	CryptDecodeObject(encodingType uint32, structType *byte, encodedBytes *byte, lenEncodedBytes uint32, flags uint32, decoded unsafe.Pointer, decodedLen *uint32) (err error) = crypt32.CryptDecodeObject
291
//sys	CryptProtectData(dataIn *DataBlob, name *uint16, optionalEntropy *DataBlob, reserved uintptr, promptStruct *CryptProtectPromptStruct, flags uint32, dataOut *DataBlob) (err error) = crypt32.CryptProtectData
292
//sys	CryptUnprotectData(dataIn *DataBlob, name **uint16, optionalEntropy *DataBlob, reserved uintptr, promptStruct *CryptProtectPromptStruct, flags uint32, dataOut *DataBlob) (err error) = crypt32.CryptUnprotectData
293
//sys	WinVerifyTrustEx(hwnd HWND, actionId *GUID, data *WinTrustData) (ret error) = wintrust.WinVerifyTrustEx
294
//sys	RegOpenKeyEx(key Handle, subkey *uint16, options uint32, desiredAccess uint32, result *Handle) (regerrno error) = advapi32.RegOpenKeyExW
295
//sys	RegCloseKey(key Handle) (regerrno error) = advapi32.RegCloseKey
296
//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
297
//sys	RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW
298
//sys	RegQueryValueEx(key Handle, name *uint16, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegQueryValueExW
299
//sys	RegNotifyChangeKeyValue(key Handle, watchSubtree bool, notifyFilter uint32, event Handle, asynchronous bool) (regerrno error) = advapi32.RegNotifyChangeKeyValue
300
//sys	GetCurrentProcessId() (pid uint32) = kernel32.GetCurrentProcessId
301
//sys	ProcessIdToSessionId(pid uint32, sessionid *uint32) (err error) = kernel32.ProcessIdToSessionId
302
//sys	GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode
303
//sys	SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode
304
//sys	GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo
305
//sys	setConsoleCursorPosition(console Handle, position uint32) (err error) = kernel32.SetConsoleCursorPosition
306
//sys	WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW
307
//sys	ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW
308
//sys	CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot
309
//sys	Module32First(snapshot Handle, moduleEntry *ModuleEntry32) (err error) = kernel32.Module32FirstW
310
//sys	Module32Next(snapshot Handle, moduleEntry *ModuleEntry32) (err error) = kernel32.Module32NextW
311
//sys	Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32FirstW
312
//sys	Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32NextW
313
//sys	Thread32First(snapshot Handle, threadEntry *ThreadEntry32) (err error)
314
//sys	Thread32Next(snapshot Handle, threadEntry *ThreadEntry32) (err error)
315
//sys	DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBufferSize uint32, outBuffer *byte, outBufferSize uint32, bytesReturned *uint32, overlapped *Overlapped) (err error)
316
// This function returns 1 byte BOOLEAN rather than the 4 byte BOOL.
317
//sys	CreateSymbolicLink(symlinkfilename *uint16, targetfilename *uint16, flags uint32) (err error) [failretval&0xff==0] = CreateSymbolicLinkW
318
//sys	CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr) (err error) [failretval&0xff==0] = CreateHardLinkW
319
//sys	GetCurrentThreadId() (id uint32)
320
//sys	CreateEvent(eventAttrs *SecurityAttributes, manualReset uint32, initialState uint32, name *uint16) (handle Handle, err error) [failretval == 0 || e1 == ERROR_ALREADY_EXISTS] = kernel32.CreateEventW
321
//sys	CreateEventEx(eventAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) [failretval == 0 || e1 == ERROR_ALREADY_EXISTS] = kernel32.CreateEventExW
322
//sys	OpenEvent(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenEventW
323
//sys	SetEvent(event Handle) (err error) = kernel32.SetEvent
324
//sys	ResetEvent(event Handle) (err error) = kernel32.ResetEvent
325
//sys	PulseEvent(event Handle) (err error) = kernel32.PulseEvent
326
//sys	CreateMutex(mutexAttrs *SecurityAttributes, initialOwner bool, name *uint16) (handle Handle, err error) [failretval == 0 || e1 == ERROR_ALREADY_EXISTS] = kernel32.CreateMutexW
327
//sys	CreateMutexEx(mutexAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) [failretval == 0 || e1 == ERROR_ALREADY_EXISTS] = kernel32.CreateMutexExW
328
//sys	OpenMutex(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenMutexW
329
//sys	ReleaseMutex(mutex Handle) (err error) = kernel32.ReleaseMutex
330
//sys	SleepEx(milliseconds uint32, alertable bool) (ret uint32) = kernel32.SleepEx
331
//sys	CreateJobObject(jobAttr *SecurityAttributes, name *uint16) (handle Handle, err error) = kernel32.CreateJobObjectW
332
//sys	AssignProcessToJobObject(job Handle, process Handle) (err error) = kernel32.AssignProcessToJobObject
333
//sys	TerminateJobObject(job Handle, exitCode uint32) (err error) = kernel32.TerminateJobObject
334
//sys	SetErrorMode(mode uint32) (ret uint32) = kernel32.SetErrorMode
335
//sys	ResumeThread(thread Handle) (ret uint32, err error) [failretval==0xffffffff] = kernel32.ResumeThread
336
//sys	SetPriorityClass(process Handle, priorityClass uint32) (err error) = kernel32.SetPriorityClass
337
//sys	GetPriorityClass(process Handle) (ret uint32, err error) = kernel32.GetPriorityClass
338
//sys	QueryInformationJobObject(job Handle, JobObjectInformationClass int32, JobObjectInformation uintptr, JobObjectInformationLength uint32, retlen *uint32) (err error) = kernel32.QueryInformationJobObject
339
//sys	SetInformationJobObject(job Handle, JobObjectInformationClass uint32, JobObjectInformation uintptr, JobObjectInformationLength uint32) (ret int, err error)
340
//sys	GenerateConsoleCtrlEvent(ctrlEvent uint32, processGroupID uint32) (err error)
341
//sys	GetProcessId(process Handle) (id uint32, err error)
342
//sys	QueryFullProcessImageName(proc Handle, flags uint32, exeName *uint16, size *uint32) (err error) = kernel32.QueryFullProcessImageNameW
343
//sys	OpenThread(desiredAccess uint32, inheritHandle bool, threadId uint32) (handle Handle, err error)
344
//sys	SetProcessPriorityBoost(process Handle, disable bool) (err error) = kernel32.SetProcessPriorityBoost
345
//sys	GetProcessWorkingSetSizeEx(hProcess Handle, lpMinimumWorkingSetSize *uintptr, lpMaximumWorkingSetSize *uintptr, flags *uint32)
346
//sys	SetProcessWorkingSetSizeEx(hProcess Handle, dwMinimumWorkingSetSize uintptr, dwMaximumWorkingSetSize uintptr, flags uint32) (err error)
347
//sys	GetCommTimeouts(handle Handle, timeouts *CommTimeouts) (err error)
348
//sys	SetCommTimeouts(handle Handle, timeouts *CommTimeouts) (err error)
349
//sys	GetActiveProcessorCount(groupNumber uint16) (ret uint32)
350
//sys	GetMaximumProcessorCount(groupNumber uint16) (ret uint32)
351
//sys	EnumWindows(enumFunc uintptr, param unsafe.Pointer) (err error) = user32.EnumWindows
352
//sys	EnumChildWindows(hwnd HWND, enumFunc uintptr, param unsafe.Pointer) = user32.EnumChildWindows
353
//sys	GetClassName(hwnd HWND, className *uint16, maxCount int32) (copied int32, err error) = user32.GetClassNameW
354
//sys	GetDesktopWindow() (hwnd HWND) = user32.GetDesktopWindow
355
//sys	GetForegroundWindow() (hwnd HWND) = user32.GetForegroundWindow
356
//sys	IsWindow(hwnd HWND) (isWindow bool) = user32.IsWindow
357
//sys	IsWindowUnicode(hwnd HWND) (isUnicode bool) = user32.IsWindowUnicode
358
//sys	IsWindowVisible(hwnd HWND) (isVisible bool) = user32.IsWindowVisible
359
//sys	GetGUIThreadInfo(thread uint32, info *GUIThreadInfo) (err error) = user32.GetGUIThreadInfo
360
//sys	GetLargePageMinimum() (size uintptr)
361

362
// Volume Management Functions
363
//sys	DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW
364
//sys	DeleteVolumeMountPoint(volumeMountPoint *uint16) (err error) = DeleteVolumeMountPointW
365
//sys	FindFirstVolume(volumeName *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeW
366
//sys	FindFirstVolumeMountPoint(rootPathName *uint16, volumeMountPoint *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeMountPointW
367
//sys	FindNextVolume(findVolume Handle, volumeName *uint16, bufferLength uint32) (err error) = FindNextVolumeW
368
//sys	FindNextVolumeMountPoint(findVolumeMountPoint Handle, volumeMountPoint *uint16, bufferLength uint32) (err error) = FindNextVolumeMountPointW
369
//sys	FindVolumeClose(findVolume Handle) (err error)
370
//sys	FindVolumeMountPointClose(findVolumeMountPoint Handle) (err error)
371
//sys	GetDiskFreeSpaceEx(directoryName *uint16, freeBytesAvailableToCaller *uint64, totalNumberOfBytes *uint64, totalNumberOfFreeBytes *uint64) (err error) = GetDiskFreeSpaceExW
372
//sys	GetDriveType(rootPathName *uint16) (driveType uint32) = GetDriveTypeW
373
//sys	GetLogicalDrives() (drivesBitMask uint32, err error) [failretval==0]
374
//sys	GetLogicalDriveStrings(bufferLength uint32, buffer *uint16) (n uint32, err error) [failretval==0] = GetLogicalDriveStringsW
375
//sys	GetVolumeInformation(rootPathName *uint16, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationW
376
//sys	GetVolumeInformationByHandle(file Handle, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationByHandleW
377
//sys	GetVolumeNameForVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16, bufferlength uint32) (err error) = GetVolumeNameForVolumeMountPointW
378
//sys	GetVolumePathName(fileName *uint16, volumePathName *uint16, bufferLength uint32) (err error) = GetVolumePathNameW
379
//sys	GetVolumePathNamesForVolumeName(volumeName *uint16, volumePathNames *uint16, bufferLength uint32, returnLength *uint32) (err error) = GetVolumePathNamesForVolumeNameW
380
//sys	QueryDosDevice(deviceName *uint16, targetPath *uint16, max uint32) (n uint32, err error) [failretval==0] = QueryDosDeviceW
381
//sys	SetVolumeLabel(rootPathName *uint16, volumeName *uint16) (err error) = SetVolumeLabelW
382
//sys	SetVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16) (err error) = SetVolumeMountPointW
383
//sys	InitiateSystemShutdownEx(machineName *uint16, message *uint16, timeout uint32, forceAppsClosed bool, rebootAfterShutdown bool, reason uint32) (err error) = advapi32.InitiateSystemShutdownExW
384
//sys	SetProcessShutdownParameters(level uint32, flags uint32) (err error) = kernel32.SetProcessShutdownParameters
385
//sys	GetProcessShutdownParameters(level *uint32, flags *uint32) (err error) = kernel32.GetProcessShutdownParameters
386
//sys	clsidFromString(lpsz *uint16, pclsid *GUID) (ret error) = ole32.CLSIDFromString
387
//sys	stringFromGUID2(rguid *GUID, lpsz *uint16, cchMax int32) (chars int32) = ole32.StringFromGUID2
388
//sys	coCreateGuid(pguid *GUID) (ret error) = ole32.CoCreateGuid
389
//sys	CoTaskMemFree(address unsafe.Pointer) = ole32.CoTaskMemFree
390
//sys	CoInitializeEx(reserved uintptr, coInit uint32) (ret error) = ole32.CoInitializeEx
391
//sys	CoUninitialize() = ole32.CoUninitialize
392
//sys	CoGetObject(name *uint16, bindOpts *BIND_OPTS3, guid *GUID, functionTable **uintptr) (ret error) = ole32.CoGetObject
393
//sys	getProcessPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetProcessPreferredUILanguages
394
//sys	getThreadPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetThreadPreferredUILanguages
395
//sys	getUserPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetUserPreferredUILanguages
396
//sys	getSystemPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetSystemPreferredUILanguages
397
//sys	findResource(module Handle, name uintptr, resType uintptr) (resInfo Handle, err error) = kernel32.FindResourceW
398
//sys	SizeofResource(module Handle, resInfo Handle) (size uint32, err error) = kernel32.SizeofResource
399
//sys	LoadResource(module Handle, resInfo Handle) (resData Handle, err error) = kernel32.LoadResource
400
//sys	LockResource(resData Handle) (addr uintptr, err error) = kernel32.LockResource
401

402
// Version APIs
403
//sys	GetFileVersionInfoSize(filename string, zeroHandle *Handle) (bufSize uint32, err error) = version.GetFileVersionInfoSizeW
404
//sys	GetFileVersionInfo(filename string, handle uint32, bufSize uint32, buffer unsafe.Pointer) (err error) = version.GetFileVersionInfoW
405
//sys	VerQueryValue(block unsafe.Pointer, subBlock string, pointerToBufferPointer unsafe.Pointer, bufSize *uint32) (err error) = version.VerQueryValueW
406

407
// Process Status API (PSAPI)
408
//sys	EnumProcesses(processIds []uint32, bytesReturned *uint32) (err error) = psapi.EnumProcesses
409
//sys	EnumProcessModules(process Handle, module *Handle, cb uint32, cbNeeded *uint32) (err error) = psapi.EnumProcessModules
410
//sys	EnumProcessModulesEx(process Handle, module *Handle, cb uint32, cbNeeded *uint32, filterFlag uint32) (err error) = psapi.EnumProcessModulesEx
411
//sys	GetModuleInformation(process Handle, module Handle, modinfo *ModuleInfo, cb uint32) (err error) = psapi.GetModuleInformation
412
//sys	GetModuleFileNameEx(process Handle, module Handle, filename *uint16, size uint32) (err error) = psapi.GetModuleFileNameExW
413
//sys	GetModuleBaseName(process Handle, module Handle, baseName *uint16, size uint32) (err error) = psapi.GetModuleBaseNameW
414
//sys   QueryWorkingSetEx(process Handle, pv uintptr, cb uint32) (err error) = psapi.QueryWorkingSetEx
415

416
// NT Native APIs
417
//sys	rtlNtStatusToDosErrorNoTeb(ntstatus NTStatus) (ret syscall.Errno) = ntdll.RtlNtStatusToDosErrorNoTeb
418
//sys	rtlGetVersion(info *OsVersionInfoEx) (ntstatus error) = ntdll.RtlGetVersion
419
//sys	rtlGetNtVersionNumbers(majorVersion *uint32, minorVersion *uint32, buildNumber *uint32) = ntdll.RtlGetNtVersionNumbers
420
//sys	RtlGetCurrentPeb() (peb *PEB) = ntdll.RtlGetCurrentPeb
421
//sys	RtlInitUnicodeString(destinationString *NTUnicodeString, sourceString *uint16) = ntdll.RtlInitUnicodeString
422
//sys	RtlInitString(destinationString *NTString, sourceString *byte) = ntdll.RtlInitString
423
//sys	NtCreateFile(handle *Handle, access uint32, oa *OBJECT_ATTRIBUTES, iosb *IO_STATUS_BLOCK, allocationSize *int64, attributes uint32, share uint32, disposition uint32, options uint32, eabuffer uintptr, ealength uint32) (ntstatus error) = ntdll.NtCreateFile
424
//sys	NtCreateNamedPipeFile(pipe *Handle, access uint32, oa *OBJECT_ATTRIBUTES, iosb *IO_STATUS_BLOCK, share uint32, disposition uint32, options uint32, typ uint32, readMode uint32, completionMode uint32, maxInstances uint32, inboundQuota uint32, outputQuota uint32, timeout *int64) (ntstatus error) = ntdll.NtCreateNamedPipeFile
425
//sys	NtSetInformationFile(handle Handle, iosb *IO_STATUS_BLOCK, inBuffer *byte, inBufferLen uint32, class uint32) (ntstatus error) = ntdll.NtSetInformationFile
426
//sys	RtlDosPathNameToNtPathName(dosName *uint16, ntName *NTUnicodeString, ntFileNamePart *uint16, relativeName *RTL_RELATIVE_NAME) (ntstatus error) = ntdll.RtlDosPathNameToNtPathName_U_WithStatus
427
//sys	RtlDosPathNameToRelativeNtPathName(dosName *uint16, ntName *NTUnicodeString, ntFileNamePart *uint16, relativeName *RTL_RELATIVE_NAME) (ntstatus error) = ntdll.RtlDosPathNameToRelativeNtPathName_U_WithStatus
428
//sys	RtlDefaultNpAcl(acl **ACL) (ntstatus error) = ntdll.RtlDefaultNpAcl
429
//sys	NtQueryInformationProcess(proc Handle, procInfoClass int32, procInfo unsafe.Pointer, procInfoLen uint32, retLen *uint32) (ntstatus error) = ntdll.NtQueryInformationProcess
430
//sys	NtSetInformationProcess(proc Handle, procInfoClass int32, procInfo unsafe.Pointer, procInfoLen uint32) (ntstatus error) = ntdll.NtSetInformationProcess
431
//sys	NtQuerySystemInformation(sysInfoClass int32, sysInfo unsafe.Pointer, sysInfoLen uint32, retLen *uint32) (ntstatus error) = ntdll.NtQuerySystemInformation
432
//sys	NtSetSystemInformation(sysInfoClass int32, sysInfo unsafe.Pointer, sysInfoLen uint32) (ntstatus error) = ntdll.NtSetSystemInformation
433
//sys	RtlAddFunctionTable(functionTable *RUNTIME_FUNCTION, entryCount uint32, baseAddress uintptr) (ret bool) = ntdll.RtlAddFunctionTable
434
//sys	RtlDeleteFunctionTable(functionTable *RUNTIME_FUNCTION) (ret bool) = ntdll.RtlDeleteFunctionTable
435

436
// Desktop Window Manager API (Dwmapi)
437
//sys	DwmGetWindowAttribute(hwnd HWND, attribute uint32, value unsafe.Pointer, size uint32) (ret error) = dwmapi.DwmGetWindowAttribute
438
//sys	DwmSetWindowAttribute(hwnd HWND, attribute uint32, value unsafe.Pointer, size uint32) (ret error) = dwmapi.DwmSetWindowAttribute
439

440
// syscall interface implementation for other packages
441

442
// GetCurrentProcess returns the handle for the current process.
443
// It is a pseudo handle that does not need to be closed.
444
// The returned error is always nil.
445
//
446
// Deprecated: use CurrentProcess for the same Handle without the nil
447
// error.
448
func GetCurrentProcess() (Handle, error) {
449
	return CurrentProcess(), nil
450
}
451

452
// CurrentProcess returns the handle for the current process.
453
// It is a pseudo handle that does not need to be closed.
454
func CurrentProcess() Handle { return Handle(^uintptr(1 - 1)) }
455

456
// GetCurrentThread returns the handle for the current thread.
457
// It is a pseudo handle that does not need to be closed.
458
// The returned error is always nil.
459
//
460
// Deprecated: use CurrentThread for the same Handle without the nil
461
// error.
462
func GetCurrentThread() (Handle, error) {
463
	return CurrentThread(), nil
464
}
465

466
// CurrentThread returns the handle for the current thread.
467
// It is a pseudo handle that does not need to be closed.
468
func CurrentThread() Handle { return Handle(^uintptr(2 - 1)) }
469

470
// GetProcAddressByOrdinal retrieves the address of the exported
471
// function from module by ordinal.
472
func GetProcAddressByOrdinal(module Handle, ordinal uintptr) (proc uintptr, err error) {
473
	r0, _, e1 := syscall.Syscall(procGetProcAddress.Addr(), 2, uintptr(module), ordinal, 0)
474
	proc = uintptr(r0)
475
	if proc == 0 {
476
		err = errnoErr(e1)
477
	}
478
	return
479
}
480

481
func Exit(code int) { ExitProcess(uint32(code)) }
482

483
func makeInheritSa() *SecurityAttributes {
484
	var sa SecurityAttributes
485
	sa.Length = uint32(unsafe.Sizeof(sa))
486
	sa.InheritHandle = 1
487
	return &sa
488
}
489

490
func Open(path string, mode int, perm uint32) (fd Handle, err error) {
491
	if len(path) == 0 {
492
		return InvalidHandle, ERROR_FILE_NOT_FOUND
493
	}
494
	pathp, err := UTF16PtrFromString(path)
495
	if err != nil {
496
		return InvalidHandle, err
497
	}
498
	var access uint32
499
	switch mode & (O_RDONLY | O_WRONLY | O_RDWR) {
500
	case O_RDONLY:
501
		access = GENERIC_READ
502
	case O_WRONLY:
503
		access = GENERIC_WRITE
504
	case O_RDWR:
505
		access = GENERIC_READ | GENERIC_WRITE
506
	}
507
	if mode&O_CREAT != 0 {
508
		access |= GENERIC_WRITE
509
	}
510
	if mode&O_APPEND != 0 {
511
		access &^= GENERIC_WRITE
512
		access |= FILE_APPEND_DATA
513
	}
514
	sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE)
515
	var sa *SecurityAttributes
516
	if mode&O_CLOEXEC == 0 {
517
		sa = makeInheritSa()
518
	}
519
	var createmode uint32
520
	switch {
521
	case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL):
522
		createmode = CREATE_NEW
523
	case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC):
524
		createmode = CREATE_ALWAYS
525
	case mode&O_CREAT == O_CREAT:
526
		createmode = OPEN_ALWAYS
527
	case mode&O_TRUNC == O_TRUNC:
528
		createmode = TRUNCATE_EXISTING
529
	default:
530
		createmode = OPEN_EXISTING
531
	}
532
	var attrs uint32 = FILE_ATTRIBUTE_NORMAL
533
	if perm&S_IWRITE == 0 {
534
		attrs = FILE_ATTRIBUTE_READONLY
535
	}
536
	h, e := CreateFile(pathp, access, sharemode, sa, createmode, attrs, 0)
537
	return h, e
538
}
539

540
func Read(fd Handle, p []byte) (n int, err error) {
541
	var done uint32
542
	e := ReadFile(fd, p, &done, nil)
543
	if e != nil {
544
		if e == ERROR_BROKEN_PIPE {
545
			// NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin
546
			return 0, nil
547
		}
548
		return 0, e
549
	}
550
	return int(done), nil
551
}
552

553
func Write(fd Handle, p []byte) (n int, err error) {
554
	if raceenabled {
555
		raceReleaseMerge(unsafe.Pointer(&ioSync))
556
	}
557
	var done uint32
558
	e := WriteFile(fd, p, &done, nil)
559
	if e != nil {
560
		return 0, e
561
	}
562
	return int(done), nil
563
}
564

565
func ReadFile(fd Handle, p []byte, done *uint32, overlapped *Overlapped) error {
566
	err := readFile(fd, p, done, overlapped)
567
	if raceenabled {
568
		if *done > 0 {
569
			raceWriteRange(unsafe.Pointer(&p[0]), int(*done))
570
		}
571
		raceAcquire(unsafe.Pointer(&ioSync))
572
	}
573
	return err
574
}
575

576
func WriteFile(fd Handle, p []byte, done *uint32, overlapped *Overlapped) error {
577
	if raceenabled {
578
		raceReleaseMerge(unsafe.Pointer(&ioSync))
579
	}
580
	err := writeFile(fd, p, done, overlapped)
581
	if raceenabled && *done > 0 {
582
		raceReadRange(unsafe.Pointer(&p[0]), int(*done))
583
	}
584
	return err
585
}
586

587
var ioSync int64
588

589
func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) {
590
	var w uint32
591
	switch whence {
592
	case 0:
593
		w = FILE_BEGIN
594
	case 1:
595
		w = FILE_CURRENT
596
	case 2:
597
		w = FILE_END
598
	}
599
	hi := int32(offset >> 32)
600
	lo := int32(offset)
601
	// use GetFileType to check pipe, pipe can't do seek
602
	ft, _ := GetFileType(fd)
603
	if ft == FILE_TYPE_PIPE {
604
		return 0, syscall.EPIPE
605
	}
606
	rlo, e := SetFilePointer(fd, lo, &hi, w)
607
	if e != nil {
608
		return 0, e
609
	}
610
	return int64(hi)<<32 + int64(rlo), nil
611
}
612

613
func Close(fd Handle) (err error) {
614
	return CloseHandle(fd)
615
}
616

617
var (
618
	Stdin  = getStdHandle(STD_INPUT_HANDLE)
619
	Stdout = getStdHandle(STD_OUTPUT_HANDLE)
620
	Stderr = getStdHandle(STD_ERROR_HANDLE)
621
)
622

623
func getStdHandle(stdhandle uint32) (fd Handle) {
624
	r, _ := GetStdHandle(stdhandle)
625
	return r
626
}
627

628
const ImplementsGetwd = true
629

630
func Getwd() (wd string, err error) {
631
	b := make([]uint16, 300)
632
	n, e := GetCurrentDirectory(uint32(len(b)), &b[0])
633
	if e != nil {
634
		return "", e
635
	}
636
	return string(utf16.Decode(b[0:n])), nil
637
}
638

639
func Chdir(path string) (err error) {
640
	pathp, err := UTF16PtrFromString(path)
641
	if err != nil {
642
		return err
643
	}
644
	return SetCurrentDirectory(pathp)
645
}
646

647
func Mkdir(path string, mode uint32) (err error) {
648
	pathp, err := UTF16PtrFromString(path)
649
	if err != nil {
650
		return err
651
	}
652
	return CreateDirectory(pathp, nil)
653
}
654

655
func Rmdir(path string) (err error) {
656
	pathp, err := UTF16PtrFromString(path)
657
	if err != nil {
658
		return err
659
	}
660
	return RemoveDirectory(pathp)
661
}
662

663
func Unlink(path string) (err error) {
664
	pathp, err := UTF16PtrFromString(path)
665
	if err != nil {
666
		return err
667
	}
668
	return DeleteFile(pathp)
669
}
670

671
func Rename(oldpath, newpath string) (err error) {
672
	from, err := UTF16PtrFromString(oldpath)
673
	if err != nil {
674
		return err
675
	}
676
	to, err := UTF16PtrFromString(newpath)
677
	if err != nil {
678
		return err
679
	}
680
	return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING)
681
}
682

683
func ComputerName() (name string, err error) {
684
	var n uint32 = MAX_COMPUTERNAME_LENGTH + 1
685
	b := make([]uint16, n)
686
	e := GetComputerName(&b[0], &n)
687
	if e != nil {
688
		return "", e
689
	}
690
	return string(utf16.Decode(b[0:n])), nil
691
}
692

693
func DurationSinceBoot() time.Duration {
694
	return time.Duration(getTickCount64()) * time.Millisecond
695
}
696

697
func Ftruncate(fd Handle, length int64) (err error) {
698
	curoffset, e := Seek(fd, 0, 1)
699
	if e != nil {
700
		return e
701
	}
702
	defer Seek(fd, curoffset, 0)
703
	_, e = Seek(fd, length, 0)
704
	if e != nil {
705
		return e
706
	}
707
	e = SetEndOfFile(fd)
708
	if e != nil {
709
		return e
710
	}
711
	return nil
712
}
713

714
func Gettimeofday(tv *Timeval) (err error) {
715
	var ft Filetime
716
	GetSystemTimeAsFileTime(&ft)
717
	*tv = NsecToTimeval(ft.Nanoseconds())
718
	return nil
719
}
720

721
func Pipe(p []Handle) (err error) {
722
	if len(p) != 2 {
723
		return syscall.EINVAL
724
	}
725
	var r, w Handle
726
	e := CreatePipe(&r, &w, makeInheritSa(), 0)
727
	if e != nil {
728
		return e
729
	}
730
	p[0] = r
731
	p[1] = w
732
	return nil
733
}
734

735
func Utimes(path string, tv []Timeval) (err error) {
736
	if len(tv) != 2 {
737
		return syscall.EINVAL
738
	}
739
	pathp, e := UTF16PtrFromString(path)
740
	if e != nil {
741
		return e
742
	}
743
	h, e := CreateFile(pathp,
744
		FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil,
745
		OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0)
746
	if e != nil {
747
		return e
748
	}
749
	defer CloseHandle(h)
750
	a := NsecToFiletime(tv[0].Nanoseconds())
751
	w := NsecToFiletime(tv[1].Nanoseconds())
752
	return SetFileTime(h, nil, &a, &w)
753
}
754

755
func UtimesNano(path string, ts []Timespec) (err error) {
756
	if len(ts) != 2 {
757
		return syscall.EINVAL
758
	}
759
	pathp, e := UTF16PtrFromString(path)
760
	if e != nil {
761
		return e
762
	}
763
	h, e := CreateFile(pathp,
764
		FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil,
765
		OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0)
766
	if e != nil {
767
		return e
768
	}
769
	defer CloseHandle(h)
770
	a := NsecToFiletime(TimespecToNsec(ts[0]))
771
	w := NsecToFiletime(TimespecToNsec(ts[1]))
772
	return SetFileTime(h, nil, &a, &w)
773
}
774

775
func Fsync(fd Handle) (err error) {
776
	return FlushFileBuffers(fd)
777
}
778

779
func Chmod(path string, mode uint32) (err error) {
780
	p, e := UTF16PtrFromString(path)
781
	if e != nil {
782
		return e
783
	}
784
	attrs, e := GetFileAttributes(p)
785
	if e != nil {
786
		return e
787
	}
788
	if mode&S_IWRITE != 0 {
789
		attrs &^= FILE_ATTRIBUTE_READONLY
790
	} else {
791
		attrs |= FILE_ATTRIBUTE_READONLY
792
	}
793
	return SetFileAttributes(p, attrs)
794
}
795

796
func LoadGetSystemTimePreciseAsFileTime() error {
797
	return procGetSystemTimePreciseAsFileTime.Find()
798
}
799

800
func LoadCancelIoEx() error {
801
	return procCancelIoEx.Find()
802
}
803

804
func LoadSetFileCompletionNotificationModes() error {
805
	return procSetFileCompletionNotificationModes.Find()
806
}
807

808
func WaitForMultipleObjects(handles []Handle, waitAll bool, waitMilliseconds uint32) (event uint32, err error) {
809
	// Every other win32 array API takes arguments as "pointer, count", except for this function. So we
810
	// can't declare it as a usual [] type, because mksyscall will use the opposite order. We therefore
811
	// trivially stub this ourselves.
812

813
	var handlePtr *Handle
814
	if len(handles) > 0 {
815
		handlePtr = &handles[0]
816
	}
817
	return waitForMultipleObjects(uint32(len(handles)), uintptr(unsafe.Pointer(handlePtr)), waitAll, waitMilliseconds)
818
}
819

820
// net api calls
821

822
const socket_error = uintptr(^uint32(0))
823

824
//sys	WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup
825
//sys	WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup
826
//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
827
//sys	WSALookupServiceBegin(querySet *WSAQUERYSET, flags uint32, handle *Handle) (err error) [failretval==socket_error] = ws2_32.WSALookupServiceBeginW
828
//sys	WSALookupServiceNext(handle Handle, flags uint32, size *int32, querySet *WSAQUERYSET) (err error) [failretval==socket_error] = ws2_32.WSALookupServiceNextW
829
//sys	WSALookupServiceEnd(handle Handle) (err error) [failretval==socket_error] = ws2_32.WSALookupServiceEnd
830
//sys	socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket
831
//sys	sendto(s Handle, buf []byte, flags int32, to unsafe.Pointer, tolen int32) (err error) [failretval==socket_error] = ws2_32.sendto
832
//sys	recvfrom(s Handle, buf []byte, flags int32, from *RawSockaddrAny, fromlen *int32) (n int32, err error) [failretval==-1] = ws2_32.recvfrom
833
//sys	Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt
834
//sys	Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt
835
//sys	bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind
836
//sys	connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect
837
//sys	getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname
838
//sys	getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername
839
//sys	listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen
840
//sys	shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown
841
//sys	Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket
842
//sys	AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx
843
//sys	GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs
844
//sys	WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv
845
//sys	WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend
846
//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
847
//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
848
//sys	WSASocket(af int32, typ int32, protocol int32, protoInfo *WSAProtocolInfo, group uint32, flags uint32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.WSASocketW
849
//sys	GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname
850
//sys	GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname
851
//sys	Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs
852
//sys	GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname
853
//sys	DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W
854
//sys	DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree
855
//sys	DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W
856
//sys	GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW
857
//sys	FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW
858
//sys	GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry
859
//sys	GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo
860
//sys	SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes
861
//sys	WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW
862
//sys	WSAGetOverlappedResult(h Handle, o *Overlapped, bytes *uint32, wait bool, flags *uint32) (err error) = ws2_32.WSAGetOverlappedResult
863
//sys	GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses
864
//sys	GetACP() (acp uint32) = kernel32.GetACP
865
//sys	MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar
866
//sys	getBestInterfaceEx(sockaddr unsafe.Pointer, pdwBestIfIndex *uint32) (errcode error) = iphlpapi.GetBestInterfaceEx
867

868
// For testing: clients can set this flag to force
869
// creation of IPv6 sockets to return EAFNOSUPPORT.
870
var SocketDisableIPv6 bool
871

872
type RawSockaddrInet4 struct {
873
	Family uint16
874
	Port   uint16
875
	Addr   [4]byte /* in_addr */
876
	Zero   [8]uint8
877
}
878

879
type RawSockaddrInet6 struct {
880
	Family   uint16
881
	Port     uint16
882
	Flowinfo uint32
883
	Addr     [16]byte /* in6_addr */
884
	Scope_id uint32
885
}
886

887
type RawSockaddr struct {
888
	Family uint16
889
	Data   [14]int8
890
}
891

892
type RawSockaddrAny struct {
893
	Addr RawSockaddr
894
	Pad  [100]int8
895
}
896

897
type Sockaddr interface {
898
	sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs
899
}
900

901
type SockaddrInet4 struct {
902
	Port int
903
	Addr [4]byte
904
	raw  RawSockaddrInet4
905
}
906

907
func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) {
908
	if sa.Port < 0 || sa.Port > 0xFFFF {
909
		return nil, 0, syscall.EINVAL
910
	}
911
	sa.raw.Family = AF_INET
912
	p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
913
	p[0] = byte(sa.Port >> 8)
914
	p[1] = byte(sa.Port)
915
	sa.raw.Addr = sa.Addr
916
	return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil
917
}
918

919
type SockaddrInet6 struct {
920
	Port   int
921
	ZoneId uint32
922
	Addr   [16]byte
923
	raw    RawSockaddrInet6
924
}
925

926
func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) {
927
	if sa.Port < 0 || sa.Port > 0xFFFF {
928
		return nil, 0, syscall.EINVAL
929
	}
930
	sa.raw.Family = AF_INET6
931
	p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
932
	p[0] = byte(sa.Port >> 8)
933
	p[1] = byte(sa.Port)
934
	sa.raw.Scope_id = sa.ZoneId
935
	sa.raw.Addr = sa.Addr
936
	return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil
937
}
938

939
type RawSockaddrUnix struct {
940
	Family uint16
941
	Path   [UNIX_PATH_MAX]int8
942
}
943

944
type SockaddrUnix struct {
945
	Name string
946
	raw  RawSockaddrUnix
947
}
948

949
func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) {
950
	name := sa.Name
951
	n := len(name)
952
	if n > len(sa.raw.Path) {
953
		return nil, 0, syscall.EINVAL
954
	}
955
	if n == len(sa.raw.Path) && name[0] != '@' {
956
		return nil, 0, syscall.EINVAL
957
	}
958
	sa.raw.Family = AF_UNIX
959
	for i := 0; i < n; i++ {
960
		sa.raw.Path[i] = int8(name[i])
961
	}
962
	// length is family (uint16), name, NUL.
963
	sl := int32(2)
964
	if n > 0 {
965
		sl += int32(n) + 1
966
	}
967
	if sa.raw.Path[0] == '@' {
968
		sa.raw.Path[0] = 0
969
		// Don't count trailing NUL for abstract address.
970
		sl--
971
	}
972

973
	return unsafe.Pointer(&sa.raw), sl, nil
974
}
975

976
type RawSockaddrBth struct {
977
	AddressFamily  [2]byte
978
	BtAddr         [8]byte
979
	ServiceClassId [16]byte
980
	Port           [4]byte
981
}
982

983
type SockaddrBth struct {
984
	BtAddr         uint64
985
	ServiceClassId GUID
986
	Port           uint32
987

988
	raw RawSockaddrBth
989
}
990

991
func (sa *SockaddrBth) sockaddr() (unsafe.Pointer, int32, error) {
992
	family := AF_BTH
993
	sa.raw = RawSockaddrBth{
994
		AddressFamily:  *(*[2]byte)(unsafe.Pointer(&family)),
995
		BtAddr:         *(*[8]byte)(unsafe.Pointer(&sa.BtAddr)),
996
		Port:           *(*[4]byte)(unsafe.Pointer(&sa.Port)),
997
		ServiceClassId: *(*[16]byte)(unsafe.Pointer(&sa.ServiceClassId)),
998
	}
999
	return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil
1000
}
1001

1002
func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) {
1003
	switch rsa.Addr.Family {
1004
	case AF_UNIX:
1005
		pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
1006
		sa := new(SockaddrUnix)
1007
		if pp.Path[0] == 0 {
1008
			// "Abstract" Unix domain socket.
1009
			// Rewrite leading NUL as @ for textual display.
1010
			// (This is the standard convention.)
1011
			// Not friendly to overwrite in place,
1012
			// but the callers below don't care.
1013
			pp.Path[0] = '@'
1014
		}
1015

1016
		// Assume path ends at NUL.
1017
		// This is not technically the Linux semantics for
1018
		// abstract Unix domain sockets--they are supposed
1019
		// to be uninterpreted fixed-size binary blobs--but
1020
		// everyone uses this convention.
1021
		n := 0
1022
		for n < len(pp.Path) && pp.Path[n] != 0 {
1023
			n++
1024
		}
1025
		sa.Name = string(unsafe.Slice((*byte)(unsafe.Pointer(&pp.Path[0])), n))
1026
		return sa, nil
1027

1028
	case AF_INET:
1029
		pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
1030
		sa := new(SockaddrInet4)
1031
		p := (*[2]byte)(unsafe.Pointer(&pp.Port))
1032
		sa.Port = int(p[0])<<8 + int(p[1])
1033
		sa.Addr = pp.Addr
1034
		return sa, nil
1035

1036
	case AF_INET6:
1037
		pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
1038
		sa := new(SockaddrInet6)
1039
		p := (*[2]byte)(unsafe.Pointer(&pp.Port))
1040
		sa.Port = int(p[0])<<8 + int(p[1])
1041
		sa.ZoneId = pp.Scope_id
1042
		sa.Addr = pp.Addr
1043
		return sa, nil
1044
	}
1045
	return nil, syscall.EAFNOSUPPORT
1046
}
1047

1048
func Socket(domain, typ, proto int) (fd Handle, err error) {
1049
	if domain == AF_INET6 && SocketDisableIPv6 {
1050
		return InvalidHandle, syscall.EAFNOSUPPORT
1051
	}
1052
	return socket(int32(domain), int32(typ), int32(proto))
1053
}
1054

1055
func SetsockoptInt(fd Handle, level, opt int, value int) (err error) {
1056
	v := int32(value)
1057
	return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v)))
1058
}
1059

1060
func Bind(fd Handle, sa Sockaddr) (err error) {
1061
	ptr, n, err := sa.sockaddr()
1062
	if err != nil {
1063
		return err
1064
	}
1065
	return bind(fd, ptr, n)
1066
}
1067

1068
func Connect(fd Handle, sa Sockaddr) (err error) {
1069
	ptr, n, err := sa.sockaddr()
1070
	if err != nil {
1071
		return err
1072
	}
1073
	return connect(fd, ptr, n)
1074
}
1075

1076
func GetBestInterfaceEx(sa Sockaddr, pdwBestIfIndex *uint32) (err error) {
1077
	ptr, _, err := sa.sockaddr()
1078
	if err != nil {
1079
		return err
1080
	}
1081
	return getBestInterfaceEx(ptr, pdwBestIfIndex)
1082
}
1083

1084
func Getsockname(fd Handle) (sa Sockaddr, err error) {
1085
	var rsa RawSockaddrAny
1086
	l := int32(unsafe.Sizeof(rsa))
1087
	if err = getsockname(fd, &rsa, &l); err != nil {
1088
		return
1089
	}
1090
	return rsa.Sockaddr()
1091
}
1092

1093
func Getpeername(fd Handle) (sa Sockaddr, err error) {
1094
	var rsa RawSockaddrAny
1095
	l := int32(unsafe.Sizeof(rsa))
1096
	if err = getpeername(fd, &rsa, &l); err != nil {
1097
		return
1098
	}
1099
	return rsa.Sockaddr()
1100
}
1101

1102
func Listen(s Handle, n int) (err error) {
1103
	return listen(s, int32(n))
1104
}
1105

1106
func Shutdown(fd Handle, how int) (err error) {
1107
	return shutdown(fd, int32(how))
1108
}
1109

1110
func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) {
1111
	var rsa unsafe.Pointer
1112
	var l int32
1113
	if to != nil {
1114
		rsa, l, err = to.sockaddr()
1115
		if err != nil {
1116
			return err
1117
		}
1118
	}
1119
	return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine)
1120
}
1121

1122
func LoadGetAddrInfo() error {
1123
	return procGetAddrInfoW.Find()
1124
}
1125

1126
var connectExFunc struct {
1127
	once sync.Once
1128
	addr uintptr
1129
	err  error
1130
}
1131

1132
func LoadConnectEx() error {
1133
	connectExFunc.once.Do(func() {
1134
		var s Handle
1135
		s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
1136
		if connectExFunc.err != nil {
1137
			return
1138
		}
1139
		defer CloseHandle(s)
1140
		var n uint32
1141
		connectExFunc.err = WSAIoctl(s,
1142
			SIO_GET_EXTENSION_FUNCTION_POINTER,
1143
			(*byte)(unsafe.Pointer(&WSAID_CONNECTEX)),
1144
			uint32(unsafe.Sizeof(WSAID_CONNECTEX)),
1145
			(*byte)(unsafe.Pointer(&connectExFunc.addr)),
1146
			uint32(unsafe.Sizeof(connectExFunc.addr)),
1147
			&n, nil, 0)
1148
	})
1149
	return connectExFunc.err
1150
}
1151

1152
func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) {
1153
	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)
1154
	if r1 == 0 {
1155
		if e1 != 0 {
1156
			err = error(e1)
1157
		} else {
1158
			err = syscall.EINVAL
1159
		}
1160
	}
1161
	return
1162
}
1163

1164
func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error {
1165
	err := LoadConnectEx()
1166
	if err != nil {
1167
		return errorspkg.New("failed to find ConnectEx: " + err.Error())
1168
	}
1169
	ptr, n, err := sa.sockaddr()
1170
	if err != nil {
1171
		return err
1172
	}
1173
	return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped)
1174
}
1175

1176
var sendRecvMsgFunc struct {
1177
	once     sync.Once
1178
	sendAddr uintptr
1179
	recvAddr uintptr
1180
	err      error
1181
}
1182

1183
func loadWSASendRecvMsg() error {
1184
	sendRecvMsgFunc.once.Do(func() {
1185
		var s Handle
1186
		s, sendRecvMsgFunc.err = Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)
1187
		if sendRecvMsgFunc.err != nil {
1188
			return
1189
		}
1190
		defer CloseHandle(s)
1191
		var n uint32
1192
		sendRecvMsgFunc.err = WSAIoctl(s,
1193
			SIO_GET_EXTENSION_FUNCTION_POINTER,
1194
			(*byte)(unsafe.Pointer(&WSAID_WSARECVMSG)),
1195
			uint32(unsafe.Sizeof(WSAID_WSARECVMSG)),
1196
			(*byte)(unsafe.Pointer(&sendRecvMsgFunc.recvAddr)),
1197
			uint32(unsafe.Sizeof(sendRecvMsgFunc.recvAddr)),
1198
			&n, nil, 0)
1199
		if sendRecvMsgFunc.err != nil {
1200
			return
1201
		}
1202
		sendRecvMsgFunc.err = WSAIoctl(s,
1203
			SIO_GET_EXTENSION_FUNCTION_POINTER,
1204
			(*byte)(unsafe.Pointer(&WSAID_WSASENDMSG)),
1205
			uint32(unsafe.Sizeof(WSAID_WSASENDMSG)),
1206
			(*byte)(unsafe.Pointer(&sendRecvMsgFunc.sendAddr)),
1207
			uint32(unsafe.Sizeof(sendRecvMsgFunc.sendAddr)),
1208
			&n, nil, 0)
1209
	})
1210
	return sendRecvMsgFunc.err
1211
}
1212

1213
func WSASendMsg(fd Handle, msg *WSAMsg, flags uint32, bytesSent *uint32, overlapped *Overlapped, croutine *byte) error {
1214
	err := loadWSASendRecvMsg()
1215
	if err != nil {
1216
		return err
1217
	}
1218
	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)))
1219
	if r1 == socket_error {
1220
		err = errnoErr(e1)
1221
	}
1222
	return err
1223
}
1224

1225
func WSARecvMsg(fd Handle, msg *WSAMsg, bytesReceived *uint32, overlapped *Overlapped, croutine *byte) error {
1226
	err := loadWSASendRecvMsg()
1227
	if err != nil {
1228
		return err
1229
	}
1230
	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)
1231
	if r1 == socket_error {
1232
		err = errnoErr(e1)
1233
	}
1234
	return err
1235
}
1236

1237
// Invented structures to support what package os expects.
1238
type Rusage struct {
1239
	CreationTime Filetime
1240
	ExitTime     Filetime
1241
	KernelTime   Filetime
1242
	UserTime     Filetime
1243
}
1244

1245
type WaitStatus struct {
1246
	ExitCode uint32
1247
}
1248

1249
func (w WaitStatus) Exited() bool { return true }
1250

1251
func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) }
1252

1253
func (w WaitStatus) Signal() Signal { return -1 }
1254

1255
func (w WaitStatus) CoreDump() bool { return false }
1256

1257
func (w WaitStatus) Stopped() bool { return false }
1258

1259
func (w WaitStatus) Continued() bool { return false }
1260

1261
func (w WaitStatus) StopSignal() Signal { return -1 }
1262

1263
func (w WaitStatus) Signaled() bool { return false }
1264

1265
func (w WaitStatus) TrapCause() int { return -1 }
1266

1267
// Timespec is an invented structure on Windows, but here for
1268
// consistency with the corresponding package for other operating systems.
1269
type Timespec struct {
1270
	Sec  int64
1271
	Nsec int64
1272
}
1273

1274
func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
1275

1276
func NsecToTimespec(nsec int64) (ts Timespec) {
1277
	ts.Sec = nsec / 1e9
1278
	ts.Nsec = nsec % 1e9
1279
	return
1280
}
1281

1282
// TODO(brainman): fix all needed for net
1283

1284
func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS }
1285

1286
func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) {
1287
	var rsa RawSockaddrAny
1288
	l := int32(unsafe.Sizeof(rsa))
1289
	n32, err := recvfrom(fd, p, int32(flags), &rsa, &l)
1290
	n = int(n32)
1291
	if err != nil {
1292
		return
1293
	}
1294
	from, err = rsa.Sockaddr()
1295
	return
1296
}
1297

1298
func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) {
1299
	ptr, l, err := to.sockaddr()
1300
	if err != nil {
1301
		return err
1302
	}
1303
	return sendto(fd, p, int32(flags), ptr, l)
1304
}
1305

1306
func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS }
1307

1308
// The Linger struct is wrong but we only noticed after Go 1.
1309
// sysLinger is the real system call structure.
1310

1311
// BUG(brainman): The definition of Linger is not appropriate for direct use
1312
// with Setsockopt and Getsockopt.
1313
// Use SetsockoptLinger instead.
1314

1315
type Linger struct {
1316
	Onoff  int32
1317
	Linger int32
1318
}
1319

1320
type sysLinger struct {
1321
	Onoff  uint16
1322
	Linger uint16
1323
}
1324

1325
type IPMreq struct {
1326
	Multiaddr [4]byte /* in_addr */
1327
	Interface [4]byte /* in_addr */
1328
}
1329

1330
type IPv6Mreq struct {
1331
	Multiaddr [16]byte /* in6_addr */
1332
	Interface uint32
1333
}
1334

1335
func GetsockoptInt(fd Handle, level, opt int) (int, error) {
1336
	v := int32(0)
1337
	l := int32(unsafe.Sizeof(v))
1338
	err := Getsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), &l)
1339
	return int(v), err
1340
}
1341

1342
func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) {
1343
	sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)}
1344
	return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys)))
1345
}
1346

1347
func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) {
1348
	return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4)
1349
}
1350
func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) {
1351
	return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq)))
1352
}
1353
func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) {
1354
	return syscall.EWINDOWS
1355
}
1356

1357
func Getpid() (pid int) { return int(GetCurrentProcessId()) }
1358

1359
func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) {
1360
	// NOTE(rsc): The Win32finddata struct is wrong for the system call:
1361
	// the two paths are each one uint16 short. Use the correct struct,
1362
	// a win32finddata1, and then copy the results out.
1363
	// There is no loss of expressivity here, because the final
1364
	// uint16, if it is used, is supposed to be a NUL, and Go doesn't need that.
1365
	// For Go 1.1, we might avoid the allocation of win32finddata1 here
1366
	// by adding a final Bug [2]uint16 field to the struct and then
1367
	// adjusting the fields in the result directly.
1368
	var data1 win32finddata1
1369
	handle, err = findFirstFile1(name, &data1)
1370
	if err == nil {
1371
		copyFindData(data, &data1)
1372
	}
1373
	return
1374
}
1375

1376
func FindNextFile(handle Handle, data *Win32finddata) (err error) {
1377
	var data1 win32finddata1
1378
	err = findNextFile1(handle, &data1)
1379
	if err == nil {
1380
		copyFindData(data, &data1)
1381
	}
1382
	return
1383
}
1384

1385
func getProcessEntry(pid int) (*ProcessEntry32, error) {
1386
	snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)
1387
	if err != nil {
1388
		return nil, err
1389
	}
1390
	defer CloseHandle(snapshot)
1391
	var procEntry ProcessEntry32
1392
	procEntry.Size = uint32(unsafe.Sizeof(procEntry))
1393
	if err = Process32First(snapshot, &procEntry); err != nil {
1394
		return nil, err
1395
	}
1396
	for {
1397
		if procEntry.ProcessID == uint32(pid) {
1398
			return &procEntry, nil
1399
		}
1400
		err = Process32Next(snapshot, &procEntry)
1401
		if err != nil {
1402
			return nil, err
1403
		}
1404
	}
1405
}
1406

1407
func Getppid() (ppid int) {
1408
	pe, err := getProcessEntry(Getpid())
1409
	if err != nil {
1410
		return -1
1411
	}
1412
	return int(pe.ParentProcessID)
1413
}
1414

1415
// TODO(brainman): fix all needed for os
1416
func Fchdir(fd Handle) (err error)             { return syscall.EWINDOWS }
1417
func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS }
1418
func Symlink(path, link string) (err error)    { return syscall.EWINDOWS }
1419

1420
func Fchmod(fd Handle, mode uint32) (err error)        { return syscall.EWINDOWS }
1421
func Chown(path string, uid int, gid int) (err error)  { return syscall.EWINDOWS }
1422
func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS }
1423
func Fchown(fd Handle, uid int, gid int) (err error)   { return syscall.EWINDOWS }
1424

1425
func Getuid() (uid int)                  { return -1 }
1426
func Geteuid() (euid int)                { return -1 }
1427
func Getgid() (gid int)                  { return -1 }
1428
func Getegid() (egid int)                { return -1 }
1429
func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS }
1430

1431
type Signal int
1432

1433
func (s Signal) Signal() {}
1434

1435
func (s Signal) String() string {
1436
	if 0 <= s && int(s) < len(signals) {
1437
		str := signals[s]
1438
		if str != "" {
1439
			return str
1440
		}
1441
	}
1442
	return "signal " + itoa(int(s))
1443
}
1444

1445
func LoadCreateSymbolicLink() error {
1446
	return procCreateSymbolicLinkW.Find()
1447
}
1448

1449
// Readlink returns the destination of the named symbolic link.
1450
func Readlink(path string, buf []byte) (n int, err error) {
1451
	fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING,
1452
		FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0)
1453
	if err != nil {
1454
		return -1, err
1455
	}
1456
	defer CloseHandle(fd)
1457

1458
	rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE)
1459
	var bytesReturned uint32
1460
	err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil)
1461
	if err != nil {
1462
		return -1, err
1463
	}
1464

1465
	rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0]))
1466
	var s string
1467
	switch rdb.ReparseTag {
1468
	case IO_REPARSE_TAG_SYMLINK:
1469
		data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer))
1470
		p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0]))
1471
		s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2])
1472
	case IO_REPARSE_TAG_MOUNT_POINT:
1473
		data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer))
1474
		p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0]))
1475
		s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2])
1476
	default:
1477
		// the path is not a symlink or junction but another type of reparse
1478
		// point
1479
		return -1, syscall.ENOENT
1480
	}
1481
	n = copy(buf, []byte(s))
1482

1483
	return n, nil
1484
}
1485

1486
// GUIDFromString parses a string in the form of
1487
// "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}" into a GUID.
1488
func GUIDFromString(str string) (GUID, error) {
1489
	guid := GUID{}
1490
	str16, err := syscall.UTF16PtrFromString(str)
1491
	if err != nil {
1492
		return guid, err
1493
	}
1494
	err = clsidFromString(str16, &guid)
1495
	if err != nil {
1496
		return guid, err
1497
	}
1498
	return guid, nil
1499
}
1500

1501
// GenerateGUID creates a new random GUID.
1502
func GenerateGUID() (GUID, error) {
1503
	guid := GUID{}
1504
	err := coCreateGuid(&guid)
1505
	if err != nil {
1506
		return guid, err
1507
	}
1508
	return guid, nil
1509
}
1510

1511
// String returns the canonical string form of the GUID,
1512
// in the form of "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}".
1513
func (guid GUID) String() string {
1514
	var str [100]uint16
1515
	chars := stringFromGUID2(&guid, &str[0], int32(len(str)))
1516
	if chars <= 1 {
1517
		return ""
1518
	}
1519
	return string(utf16.Decode(str[:chars-1]))
1520
}
1521

1522
// KnownFolderPath returns a well-known folder path for the current user, specified by one of
1523
// the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag.
1524
func KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) {
1525
	return Token(0).KnownFolderPath(folderID, flags)
1526
}
1527

1528
// KnownFolderPath returns a well-known folder path for the user token, specified by one of
1529
// the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag.
1530
func (t Token) KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) {
1531
	var p *uint16
1532
	err := shGetKnownFolderPath(folderID, flags, t, &p)
1533
	if err != nil {
1534
		return "", err
1535
	}
1536
	defer CoTaskMemFree(unsafe.Pointer(p))
1537
	return UTF16PtrToString(p), nil
1538
}
1539

1540
// RtlGetVersion returns the version of the underlying operating system, ignoring
1541
// manifest semantics but is affected by the application compatibility layer.
1542
func RtlGetVersion() *OsVersionInfoEx {
1543
	info := &OsVersionInfoEx{}
1544
	info.osVersionInfoSize = uint32(unsafe.Sizeof(*info))
1545
	// According to documentation, this function always succeeds.
1546
	// The function doesn't even check the validity of the
1547
	// osVersionInfoSize member. Disassembling ntdll.dll indicates
1548
	// that the documentation is indeed correct about that.
1549
	_ = rtlGetVersion(info)
1550
	return info
1551
}
1552

1553
// RtlGetNtVersionNumbers returns the version of the underlying operating system,
1554
// ignoring manifest semantics and the application compatibility layer.
1555
func RtlGetNtVersionNumbers() (majorVersion, minorVersion, buildNumber uint32) {
1556
	rtlGetNtVersionNumbers(&majorVersion, &minorVersion, &buildNumber)
1557
	buildNumber &= 0xffff
1558
	return
1559
}
1560

1561
// GetProcessPreferredUILanguages retrieves the process preferred UI languages.
1562
func GetProcessPreferredUILanguages(flags uint32) ([]string, error) {
1563
	return getUILanguages(flags, getProcessPreferredUILanguages)
1564
}
1565

1566
// GetThreadPreferredUILanguages retrieves the thread preferred UI languages for the current thread.
1567
func GetThreadPreferredUILanguages(flags uint32) ([]string, error) {
1568
	return getUILanguages(flags, getThreadPreferredUILanguages)
1569
}
1570

1571
// GetUserPreferredUILanguages retrieves information about the user preferred UI languages.
1572
func GetUserPreferredUILanguages(flags uint32) ([]string, error) {
1573
	return getUILanguages(flags, getUserPreferredUILanguages)
1574
}
1575

1576
// GetSystemPreferredUILanguages retrieves the system preferred UI languages.
1577
func GetSystemPreferredUILanguages(flags uint32) ([]string, error) {
1578
	return getUILanguages(flags, getSystemPreferredUILanguages)
1579
}
1580

1581
func getUILanguages(flags uint32, f func(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) error) ([]string, error) {
1582
	size := uint32(128)
1583
	for {
1584
		var numLanguages uint32
1585
		buf := make([]uint16, size)
1586
		err := f(flags, &numLanguages, &buf[0], &size)
1587
		if err == ERROR_INSUFFICIENT_BUFFER {
1588
			continue
1589
		}
1590
		if err != nil {
1591
			return nil, err
1592
		}
1593
		buf = buf[:size]
1594
		if numLanguages == 0 || len(buf) == 0 { // GetProcessPreferredUILanguages may return numLanguages==0 with "\0\0"
1595
			return []string{}, nil
1596
		}
1597
		if buf[len(buf)-1] == 0 {
1598
			buf = buf[:len(buf)-1] // remove terminating null
1599
		}
1600
		languages := make([]string, 0, numLanguages)
1601
		from := 0
1602
		for i, c := range buf {
1603
			if c == 0 {
1604
				languages = append(languages, string(utf16.Decode(buf[from:i])))
1605
				from = i + 1
1606
			}
1607
		}
1608
		return languages, nil
1609
	}
1610
}
1611

1612
func SetConsoleCursorPosition(console Handle, position Coord) error {
1613
	return setConsoleCursorPosition(console, *((*uint32)(unsafe.Pointer(&position))))
1614
}
1615

1616
func (s NTStatus) Errno() syscall.Errno {
1617
	return rtlNtStatusToDosErrorNoTeb(s)
1618
}
1619

1620
func langID(pri, sub uint16) uint32 { return uint32(sub)<<10 | uint32(pri) }
1621

1622
func (s NTStatus) Error() string {
1623
	b := make([]uint16, 300)
1624
	n, err := FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_FROM_HMODULE|FORMAT_MESSAGE_ARGUMENT_ARRAY, modntdll.Handle(), uint32(s), langID(LANG_ENGLISH, SUBLANG_ENGLISH_US), b, nil)
1625
	if err != nil {
1626
		return fmt.Sprintf("NTSTATUS 0x%08x", uint32(s))
1627
	}
1628
	// trim terminating \r and \n
1629
	for ; n > 0 && (b[n-1] == '\n' || b[n-1] == '\r'); n-- {
1630
	}
1631
	return string(utf16.Decode(b[:n]))
1632
}
1633

1634
// NewNTUnicodeString returns a new NTUnicodeString structure for use with native
1635
// NT APIs that work over the NTUnicodeString type. Note that most Windows APIs
1636
// do not use NTUnicodeString, and instead UTF16PtrFromString should be used for
1637
// the more common *uint16 string type.
1638
func NewNTUnicodeString(s string) (*NTUnicodeString, error) {
1639
	var u NTUnicodeString
1640
	s16, err := UTF16PtrFromString(s)
1641
	if err != nil {
1642
		return nil, err
1643
	}
1644
	RtlInitUnicodeString(&u, s16)
1645
	return &u, nil
1646
}
1647

1648
// Slice returns a uint16 slice that aliases the data in the NTUnicodeString.
1649
func (s *NTUnicodeString) Slice() []uint16 {
1650
	var slice []uint16
1651
	hdr := (*unsafeheader.Slice)(unsafe.Pointer(&slice))
1652
	hdr.Data = unsafe.Pointer(s.Buffer)
1653
	hdr.Len = int(s.Length)
1654
	hdr.Cap = int(s.MaximumLength)
1655
	return slice
1656
}
1657

1658
func (s *NTUnicodeString) String() string {
1659
	return UTF16ToString(s.Slice())
1660
}
1661

1662
// NewNTString returns a new NTString structure for use with native
1663
// NT APIs that work over the NTString type. Note that most Windows APIs
1664
// do not use NTString, and instead UTF16PtrFromString should be used for
1665
// the more common *uint16 string type.
1666
func NewNTString(s string) (*NTString, error) {
1667
	var nts NTString
1668
	s8, err := BytePtrFromString(s)
1669
	if err != nil {
1670
		return nil, err
1671
	}
1672
	RtlInitString(&nts, s8)
1673
	return &nts, nil
1674
}
1675

1676
// Slice returns a byte slice that aliases the data in the NTString.
1677
func (s *NTString) Slice() []byte {
1678
	var slice []byte
1679
	hdr := (*unsafeheader.Slice)(unsafe.Pointer(&slice))
1680
	hdr.Data = unsafe.Pointer(s.Buffer)
1681
	hdr.Len = int(s.Length)
1682
	hdr.Cap = int(s.MaximumLength)
1683
	return slice
1684
}
1685

1686
func (s *NTString) String() string {
1687
	return ByteSliceToString(s.Slice())
1688
}
1689

1690
// FindResource resolves a resource of the given name and resource type.
1691
func FindResource(module Handle, name, resType ResourceIDOrString) (Handle, error) {
1692
	var namePtr, resTypePtr uintptr
1693
	var name16, resType16 *uint16
1694
	var err error
1695
	resolvePtr := func(i interface{}, keep **uint16) (uintptr, error) {
1696
		switch v := i.(type) {
1697
		case string:
1698
			*keep, err = UTF16PtrFromString(v)
1699
			if err != nil {
1700
				return 0, err
1701
			}
1702
			return uintptr(unsafe.Pointer(*keep)), nil
1703
		case ResourceID:
1704
			return uintptr(v), nil
1705
		}
1706
		return 0, errorspkg.New("parameter must be a ResourceID or a string")
1707
	}
1708
	namePtr, err = resolvePtr(name, &name16)
1709
	if err != nil {
1710
		return 0, err
1711
	}
1712
	resTypePtr, err = resolvePtr(resType, &resType16)
1713
	if err != nil {
1714
		return 0, err
1715
	}
1716
	resInfo, err := findResource(module, namePtr, resTypePtr)
1717
	runtime.KeepAlive(name16)
1718
	runtime.KeepAlive(resType16)
1719
	return resInfo, err
1720
}
1721

1722
func LoadResourceData(module, resInfo Handle) (data []byte, err error) {
1723
	size, err := SizeofResource(module, resInfo)
1724
	if err != nil {
1725
		return
1726
	}
1727
	resData, err := LoadResource(module, resInfo)
1728
	if err != nil {
1729
		return
1730
	}
1731
	ptr, err := LockResource(resData)
1732
	if err != nil {
1733
		return
1734
	}
1735
	h := (*unsafeheader.Slice)(unsafe.Pointer(&data))
1736
	h.Data = unsafe.Pointer(ptr)
1737
	h.Len = int(size)
1738
	h.Cap = int(size)
1739
	return
1740
}
1741

1742
// PSAPI_WORKING_SET_EX_BLOCK contains extended working set information for a page.
1743
type PSAPI_WORKING_SET_EX_BLOCK uint64
1744

1745
// Valid returns the validity of this page.
1746
// If this bit is 1, the subsequent members are valid; otherwise they should be ignored.
1747
func (b PSAPI_WORKING_SET_EX_BLOCK) Valid() bool {
1748
	return (b & 1) == 1
1749
}
1750

1751
// ShareCount is the number of processes that share this page. The maximum value of this member is 7.
1752
func (b PSAPI_WORKING_SET_EX_BLOCK) ShareCount() uint64 {
1753
	return b.intField(1, 3)
1754
}
1755

1756
// Win32Protection is the memory protection attributes of the page. For a list of values, see
1757
// https://docs.microsoft.com/en-us/windows/win32/memory/memory-protection-constants
1758
func (b PSAPI_WORKING_SET_EX_BLOCK) Win32Protection() uint64 {
1759
	return b.intField(4, 11)
1760
}
1761

1762
// Shared returns the shared status of this page.
1763
// If this bit is 1, the page can be shared.
1764
func (b PSAPI_WORKING_SET_EX_BLOCK) Shared() bool {
1765
	return (b & (1 << 15)) == 1
1766
}
1767

1768
// Node is the NUMA node. The maximum value of this member is 63.
1769
func (b PSAPI_WORKING_SET_EX_BLOCK) Node() uint64 {
1770
	return b.intField(16, 6)
1771
}
1772

1773
// Locked returns the locked status of this page.
1774
// If this bit is 1, the virtual page is locked in physical memory.
1775
func (b PSAPI_WORKING_SET_EX_BLOCK) Locked() bool {
1776
	return (b & (1 << 22)) == 1
1777
}
1778

1779
// LargePage returns the large page status of this page.
1780
// If this bit is 1, the page is a large page.
1781
func (b PSAPI_WORKING_SET_EX_BLOCK) LargePage() bool {
1782
	return (b & (1 << 23)) == 1
1783
}
1784

1785
// Bad returns the bad status of this page.
1786
// If this bit is 1, the page is has been reported as bad.
1787
func (b PSAPI_WORKING_SET_EX_BLOCK) Bad() bool {
1788
	return (b & (1 << 31)) == 1
1789
}
1790

1791
// intField extracts an integer field in the PSAPI_WORKING_SET_EX_BLOCK union.
1792
func (b PSAPI_WORKING_SET_EX_BLOCK) intField(start, length int) uint64 {
1793
	var mask PSAPI_WORKING_SET_EX_BLOCK
1794
	for pos := start; pos < start+length; pos++ {
1795
		mask |= (1 << pos)
1796
	}
1797

1798
	masked := b & mask
1799
	return uint64(masked >> start)
1800
}
1801

1802
// PSAPI_WORKING_SET_EX_INFORMATION contains extended working set information for a process.
1803
type PSAPI_WORKING_SET_EX_INFORMATION struct {
1804
	// The virtual address.
1805
	VirtualAddress Pointer
1806
	// A PSAPI_WORKING_SET_EX_BLOCK union that indicates the attributes of the page at VirtualAddress.
1807
	VirtualAttributes PSAPI_WORKING_SET_EX_BLOCK
1808
}
1809