go-tg-screenshot-bot

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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Windows system calls.
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package windows
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import (
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	errorspkg "errors"
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	"fmt"
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	"runtime"
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	"sync"
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	"syscall"
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	"time"
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	"unicode/utf16"
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	"unsafe"
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)
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type (
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	Handle uintptr
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	HWND   uintptr
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)
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const (
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	InvalidHandle = ^Handle(0)
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	InvalidHWND   = ^HWND(0)
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	// Flags for DefineDosDevice.
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	DDD_EXACT_MATCH_ON_REMOVE = 0x00000004
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	DDD_NO_BROADCAST_SYSTEM   = 0x00000008
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	DDD_RAW_TARGET_PATH       = 0x00000001
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	DDD_REMOVE_DEFINITION     = 0x00000002
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	// Return values for GetDriveType.
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	DRIVE_UNKNOWN     = 0
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	DRIVE_NO_ROOT_DIR = 1
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	DRIVE_REMOVABLE   = 2
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	DRIVE_FIXED       = 3
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	DRIVE_REMOTE      = 4
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	DRIVE_CDROM       = 5
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	DRIVE_RAMDISK     = 6
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	// File system flags from GetVolumeInformation and GetVolumeInformationByHandle.
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	FILE_CASE_SENSITIVE_SEARCH        = 0x00000001
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	FILE_CASE_PRESERVED_NAMES         = 0x00000002
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	FILE_FILE_COMPRESSION             = 0x00000010
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	FILE_DAX_VOLUME                   = 0x20000000
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	FILE_NAMED_STREAMS                = 0x00040000
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	FILE_PERSISTENT_ACLS              = 0x00000008
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	FILE_READ_ONLY_VOLUME             = 0x00080000
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	FILE_SEQUENTIAL_WRITE_ONCE        = 0x00100000
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	FILE_SUPPORTS_ENCRYPTION          = 0x00020000
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	FILE_SUPPORTS_EXTENDED_ATTRIBUTES = 0x00800000
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	FILE_SUPPORTS_HARD_LINKS          = 0x00400000
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	FILE_SUPPORTS_OBJECT_IDS          = 0x00010000
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	FILE_SUPPORTS_OPEN_BY_FILE_ID     = 0x01000000
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	FILE_SUPPORTS_REPARSE_POINTS      = 0x00000080
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	FILE_SUPPORTS_SPARSE_FILES        = 0x00000040
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	FILE_SUPPORTS_TRANSACTIONS        = 0x00200000
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	FILE_SUPPORTS_USN_JOURNAL         = 0x02000000
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	FILE_UNICODE_ON_DISK              = 0x00000004
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	FILE_VOLUME_IS_COMPRESSED         = 0x00008000
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	FILE_VOLUME_QUOTAS                = 0x00000020
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	// Flags for LockFileEx.
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	LOCKFILE_FAIL_IMMEDIATELY = 0x00000001
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	LOCKFILE_EXCLUSIVE_LOCK   = 0x00000002
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	// Return value of SleepEx and other APC functions
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	WAIT_IO_COMPLETION = 0x000000C0
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)
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// StringToUTF16 is deprecated. Use UTF16FromString instead.
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// If s contains a NUL byte this function panics instead of
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// returning an error.
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func StringToUTF16(s string) []uint16 {
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	a, err := UTF16FromString(s)
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	if err != nil {
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		panic("windows: string with NUL passed to StringToUTF16")
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	}
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	return a
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}
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// UTF16FromString returns the UTF-16 encoding of the UTF-8 string
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// s, with a terminating NUL added. If s contains a NUL byte at any
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// location, it returns (nil, syscall.EINVAL).
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func UTF16FromString(s string) ([]uint16, error) {
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	return syscall.UTF16FromString(s)
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}
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// UTF16ToString returns the UTF-8 encoding of the UTF-16 sequence s,
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// with a terminating NUL and any bytes after the NUL removed.
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func UTF16ToString(s []uint16) string {
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	return syscall.UTF16ToString(s)
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}
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// StringToUTF16Ptr is deprecated. Use UTF16PtrFromString instead.
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// If s contains a NUL byte this function panics instead of
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// returning an error.
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func StringToUTF16Ptr(s string) *uint16 { return &StringToUTF16(s)[0] }
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// UTF16PtrFromString returns pointer to the UTF-16 encoding of
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// the UTF-8 string s, with a terminating NUL added. If s
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// contains a NUL byte at any location, it returns (nil, syscall.EINVAL).
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func UTF16PtrFromString(s string) (*uint16, error) {
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	a, err := UTF16FromString(s)
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	if err != nil {
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		return nil, err
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	}
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	return &a[0], nil
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}
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// UTF16PtrToString takes a pointer to a UTF-16 sequence and returns the corresponding UTF-8 encoded string.
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// If the pointer is nil, it returns the empty string. It assumes that the UTF-16 sequence is terminated
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// at a zero word; if the zero word is not present, the program may crash.
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func UTF16PtrToString(p *uint16) string {
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	if p == nil {
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		return ""
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	}
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	if *p == 0 {
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		return ""
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	}
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	// Find NUL terminator.
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	n := 0
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	for ptr := unsafe.Pointer(p); *(*uint16)(ptr) != 0; n++ {
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		ptr = unsafe.Pointer(uintptr(ptr) + unsafe.Sizeof(*p))
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	}
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	return UTF16ToString(unsafe.Slice(p, n))
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}
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func Getpagesize() int { return 4096 }
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// NewCallback converts a Go function to a function pointer conforming to the stdcall calling convention.
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// This is useful when interoperating with Windows code requiring callbacks.
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// The argument is expected to be a function with one uintptr-sized result. The function must not have arguments with size larger than the size of uintptr.
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func NewCallback(fn interface{}) uintptr {
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	return syscall.NewCallback(fn)
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}
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// NewCallbackCDecl converts a Go function to a function pointer conforming to the cdecl calling convention.
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// This is useful when interoperating with Windows code requiring callbacks.
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// The argument is expected to be a function with one uintptr-sized result. The function must not have arguments with size larger than the size of uintptr.
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func NewCallbackCDecl(fn interface{}) uintptr {
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	return syscall.NewCallbackCDecl(fn)
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}
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// windows api calls
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//sys	GetLastError() (lasterr error)
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//sys	LoadLibrary(libname string) (handle Handle, err error) = LoadLibraryW
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//sys	LoadLibraryEx(libname string, zero Handle, flags uintptr) (handle Handle, err error) = LoadLibraryExW
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//sys	FreeLibrary(handle Handle) (err error)
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//sys	GetProcAddress(module Handle, procname string) (proc uintptr, err error)
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//sys	GetModuleFileName(module Handle, filename *uint16, size uint32) (n uint32, err error) = kernel32.GetModuleFileNameW
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//sys	GetModuleHandleEx(flags uint32, moduleName *uint16, module *Handle) (err error) = kernel32.GetModuleHandleExW
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//sys	SetDefaultDllDirectories(directoryFlags uint32) (err error)
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//sys	AddDllDirectory(path *uint16) (cookie uintptr, err error) = kernel32.AddDllDirectory
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//sys	RemoveDllDirectory(cookie uintptr) (err error) = kernel32.RemoveDllDirectory
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//sys	SetDllDirectory(path string) (err error) = kernel32.SetDllDirectoryW
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//sys	GetVersion() (ver uint32, err error)
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//sys	FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW
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//sys	ExitProcess(exitcode uint32)
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//sys	IsWow64Process(handle Handle, isWow64 *bool) (err error) = IsWow64Process
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//sys	IsWow64Process2(handle Handle, processMachine *uint16, nativeMachine *uint16) (err error) = IsWow64Process2?
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//sys	CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile Handle) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW
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//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
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//sys	ConnectNamedPipe(pipe Handle, overlapped *Overlapped) (err error)
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//sys	DisconnectNamedPipe(pipe Handle) (err error)
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//sys	GetNamedPipeInfo(pipe Handle, flags *uint32, outSize *uint32, inSize *uint32, maxInstances *uint32) (err error)
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//sys	GetNamedPipeHandleState(pipe Handle, state *uint32, curInstances *uint32, maxCollectionCount *uint32, collectDataTimeout *uint32, userName *uint16, maxUserNameSize uint32) (err error) = GetNamedPipeHandleStateW
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//sys	SetNamedPipeHandleState(pipe Handle, state *uint32, maxCollectionCount *uint32, collectDataTimeout *uint32) (err error) = SetNamedPipeHandleState
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//sys	readFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) = ReadFile
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//sys	writeFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error) = WriteFile
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//sys	GetOverlappedResult(handle Handle, overlapped *Overlapped, done *uint32, wait bool) (err error)
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//sys	SetFilePointer(handle Handle, lowoffset int32, highoffsetptr *int32, whence uint32) (newlowoffset uint32, err error) [failretval==0xffffffff]
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//sys	CloseHandle(handle Handle) (err error)
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//sys	GetStdHandle(stdhandle uint32) (handle Handle, err error) [failretval==InvalidHandle]
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//sys	SetStdHandle(stdhandle uint32, handle Handle) (err error)
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//sys	findFirstFile1(name *uint16, data *win32finddata1) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstFileW
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//sys	findNextFile1(handle Handle, data *win32finddata1) (err error) = FindNextFileW
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//sys	FindClose(handle Handle) (err error)
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//sys	GetFileInformationByHandle(handle Handle, data *ByHandleFileInformation) (err error)
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//sys	GetFileInformationByHandleEx(handle Handle, class uint32, outBuffer *byte, outBufferLen uint32) (err error)
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//sys	SetFileInformationByHandle(handle Handle, class uint32, inBuffer *byte, inBufferLen uint32) (err error)
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//sys	GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, err error) = GetCurrentDirectoryW
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//sys	SetCurrentDirectory(path *uint16) (err error) = SetCurrentDirectoryW
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//sys	CreateDirectory(path *uint16, sa *SecurityAttributes) (err error) = CreateDirectoryW
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//sys	RemoveDirectory(path *uint16) (err error) = RemoveDirectoryW
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//sys	DeleteFile(path *uint16) (err error) = DeleteFileW
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//sys	MoveFile(from *uint16, to *uint16) (err error) = MoveFileW
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//sys	MoveFileEx(from *uint16, to *uint16, flags uint32) (err error) = MoveFileExW
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//sys	LockFileEx(file Handle, flags uint32, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *Overlapped) (err error)
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//sys	UnlockFileEx(file Handle, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *Overlapped) (err error)
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//sys	GetComputerName(buf *uint16, n *uint32) (err error) = GetComputerNameW
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//sys	GetComputerNameEx(nametype uint32, buf *uint16, n *uint32) (err error) = GetComputerNameExW
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//sys	SetEndOfFile(handle Handle) (err error)
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//sys	SetFileValidData(handle Handle, validDataLength int64) (err error)
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//sys	GetSystemTimeAsFileTime(time *Filetime)
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//sys	GetSystemTimePreciseAsFileTime(time *Filetime)
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//sys	GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff]
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//sys	CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uintptr, threadcnt uint32) (handle Handle, err error)
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//sys	GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uintptr, overlapped **Overlapped, timeout uint32) (err error)
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//sys	PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uintptr, overlapped *Overlapped) (err error)
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//sys	CancelIo(s Handle) (err error)
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//sys	CancelIoEx(s Handle, o *Overlapped) (err error)
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//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
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//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
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//sys   initializeProcThreadAttributeList(attrlist *ProcThreadAttributeList, attrcount uint32, flags uint32, size *uintptr) (err error) = InitializeProcThreadAttributeList
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//sys   deleteProcThreadAttributeList(attrlist *ProcThreadAttributeList) = DeleteProcThreadAttributeList
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//sys   updateProcThreadAttribute(attrlist *ProcThreadAttributeList, flags uint32, attr uintptr, value unsafe.Pointer, size uintptr, prevvalue unsafe.Pointer, returnedsize *uintptr) (err error) = UpdateProcThreadAttribute
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//sys	OpenProcess(desiredAccess uint32, inheritHandle bool, processId uint32) (handle Handle, err error)
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//sys	ShellExecute(hwnd Handle, verb *uint16, file *uint16, args *uint16, cwd *uint16, showCmd int32) (err error) [failretval<=32] = shell32.ShellExecuteW
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//sys	GetWindowThreadProcessId(hwnd HWND, pid *uint32) (tid uint32, err error) = user32.GetWindowThreadProcessId
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//sys	LoadKeyboardLayout(name *uint16, flags uint32) (hkl Handle, err error) [failretval==0] = user32.LoadKeyboardLayoutW
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//sys	UnloadKeyboardLayout(hkl Handle) (err error) = user32.UnloadKeyboardLayout
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//sys	GetKeyboardLayout(tid uint32) (hkl Handle) = user32.GetKeyboardLayout
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//sys	ToUnicodeEx(vkey uint32, scancode uint32, keystate *byte, pwszBuff *uint16, cchBuff int32, flags uint32, hkl Handle) (ret int32) = user32.ToUnicodeEx
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//sys	GetShellWindow() (shellWindow HWND) = user32.GetShellWindow
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//sys	MessageBox(hwnd HWND, text *uint16, caption *uint16, boxtype uint32) (ret int32, err error) [failretval==0] = user32.MessageBoxW
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//sys	ExitWindowsEx(flags uint32, reason uint32) (err error) = user32.ExitWindowsEx
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//sys	shGetKnownFolderPath(id *KNOWNFOLDERID, flags uint32, token Token, path **uint16) (ret error) = shell32.SHGetKnownFolderPath
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//sys	TerminateProcess(handle Handle, exitcode uint32) (err error)
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//sys	GetExitCodeProcess(handle Handle, exitcode *uint32) (err error)
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//sys	getStartupInfo(startupInfo *StartupInfo) = GetStartupInfoW
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//sys	GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error)
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//sys	DuplicateHandle(hSourceProcessHandle Handle, hSourceHandle Handle, hTargetProcessHandle Handle, lpTargetHandle *Handle, dwDesiredAccess uint32, bInheritHandle bool, dwOptions uint32) (err error)
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//sys	WaitForSingleObject(handle Handle, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff]
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//sys	waitForMultipleObjects(count uint32, handles uintptr, waitAll bool, waitMilliseconds uint32) (event uint32, err error) [failretval==0xffffffff] = WaitForMultipleObjects
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//sys	GetTempPath(buflen uint32, buf *uint16) (n uint32, err error) = GetTempPathW
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//sys	CreatePipe(readhandle *Handle, writehandle *Handle, sa *SecurityAttributes, size uint32) (err error)
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//sys	GetFileType(filehandle Handle) (n uint32, err error)
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//sys	CryptAcquireContext(provhandle *Handle, container *uint16, provider *uint16, provtype uint32, flags uint32) (err error) = advapi32.CryptAcquireContextW
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//sys	CryptReleaseContext(provhandle Handle, flags uint32) (err error) = advapi32.CryptReleaseContext
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//sys	CryptGenRandom(provhandle Handle, buflen uint32, buf *byte) (err error) = advapi32.CryptGenRandom
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//sys	GetEnvironmentStrings() (envs *uint16, err error) [failretval==nil] = kernel32.GetEnvironmentStringsW
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//sys	FreeEnvironmentStrings(envs *uint16) (err error) = kernel32.FreeEnvironmentStringsW
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//sys	GetEnvironmentVariable(name *uint16, buffer *uint16, size uint32) (n uint32, err error) = kernel32.GetEnvironmentVariableW
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//sys	SetEnvironmentVariable(name *uint16, value *uint16) (err error) = kernel32.SetEnvironmentVariableW
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//sys	ExpandEnvironmentStrings(src *uint16, dst *uint16, size uint32) (n uint32, err error) = kernel32.ExpandEnvironmentStringsW
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//sys	CreateEnvironmentBlock(block **uint16, token Token, inheritExisting bool) (err error) = userenv.CreateEnvironmentBlock
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//sys	DestroyEnvironmentBlock(block *uint16) (err error) = userenv.DestroyEnvironmentBlock
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//sys	getTickCount64() (ms uint64) = kernel32.GetTickCount64
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//sys   GetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error)
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//sys	SetFileTime(handle Handle, ctime *Filetime, atime *Filetime, wtime *Filetime) (err error)
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//sys	GetFileAttributes(name *uint16) (attrs uint32, err error) [failretval==INVALID_FILE_ATTRIBUTES] = kernel32.GetFileAttributesW
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//sys	SetFileAttributes(name *uint16, attrs uint32) (err error) = kernel32.SetFileAttributesW
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//sys	GetFileAttributesEx(name *uint16, level uint32, info *byte) (err error) = kernel32.GetFileAttributesExW
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//sys	GetCommandLine() (cmd *uint16) = kernel32.GetCommandLineW
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//sys	commandLineToArgv(cmd *uint16, argc *int32) (argv **uint16, err error) [failretval==nil] = shell32.CommandLineToArgvW
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//sys	LocalFree(hmem Handle) (handle Handle, err error) [failretval!=0]
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//sys	LocalAlloc(flags uint32, length uint32) (ptr uintptr, err error)
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//sys	SetHandleInformation(handle Handle, mask uint32, flags uint32) (err error)
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//sys	FlushFileBuffers(handle Handle) (err error)
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//sys	GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, err error) = kernel32.GetFullPathNameW
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//sys	GetLongPathName(path *uint16, buf *uint16, buflen uint32) (n uint32, err error) = kernel32.GetLongPathNameW
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//sys	GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW
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//sys	GetFinalPathNameByHandle(file Handle, filePath *uint16, filePathSize uint32, flags uint32) (n uint32, err error) = kernel32.GetFinalPathNameByHandleW
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//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
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//sys	MapViewOfFile(handle Handle, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, err error)
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//sys	UnmapViewOfFile(addr uintptr) (err error)
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//sys	FlushViewOfFile(addr uintptr, length uintptr) (err error)
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//sys	VirtualLock(addr uintptr, length uintptr) (err error)
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//sys	VirtualUnlock(addr uintptr, length uintptr) (err error)
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//sys	VirtualAlloc(address uintptr, size uintptr, alloctype uint32, protect uint32) (value uintptr, err error) = kernel32.VirtualAlloc
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//sys	VirtualFree(address uintptr, size uintptr, freetype uint32) (err error) = kernel32.VirtualFree
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//sys	VirtualProtect(address uintptr, size uintptr, newprotect uint32, oldprotect *uint32) (err error) = kernel32.VirtualProtect
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//sys	VirtualProtectEx(process Handle, address uintptr, size uintptr, newProtect uint32, oldProtect *uint32) (err error) = kernel32.VirtualProtectEx
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//sys	VirtualQuery(address uintptr, buffer *MemoryBasicInformation, length uintptr) (err error) = kernel32.VirtualQuery
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//sys	VirtualQueryEx(process Handle, address uintptr, buffer *MemoryBasicInformation, length uintptr) (err error) = kernel32.VirtualQueryEx
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//sys	ReadProcessMemory(process Handle, baseAddress uintptr, buffer *byte, size uintptr, numberOfBytesRead *uintptr) (err error) = kernel32.ReadProcessMemory
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//sys	WriteProcessMemory(process Handle, baseAddress uintptr, buffer *byte, size uintptr, numberOfBytesWritten *uintptr) (err error) = kernel32.WriteProcessMemory
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//sys	TransmitFile(s Handle, handle Handle, bytesToWrite uint32, bytsPerSend uint32, overlapped *Overlapped, transmitFileBuf *TransmitFileBuffers, flags uint32) (err error) = mswsock.TransmitFile
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//sys	ReadDirectoryChanges(handle Handle, buf *byte, buflen uint32, watchSubTree bool, mask uint32, retlen *uint32, overlapped *Overlapped, completionRoutine uintptr) (err error) = kernel32.ReadDirectoryChangesW
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//sys	FindFirstChangeNotification(path string, watchSubtree bool, notifyFilter uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.FindFirstChangeNotificationW
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//sys	FindNextChangeNotification(handle Handle) (err error)
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//sys	FindCloseChangeNotification(handle Handle) (err error)
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//sys	CertOpenSystemStore(hprov Handle, name *uint16) (store Handle, err error) = crypt32.CertOpenSystemStoreW
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//sys	CertOpenStore(storeProvider uintptr, msgAndCertEncodingType uint32, cryptProv uintptr, flags uint32, para uintptr) (handle Handle, err error) = crypt32.CertOpenStore
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//sys	CertEnumCertificatesInStore(store Handle, prevContext *CertContext) (context *CertContext, err error) [failretval==nil] = crypt32.CertEnumCertificatesInStore
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//sys	CertAddCertificateContextToStore(store Handle, certContext *CertContext, addDisposition uint32, storeContext **CertContext) (err error) = crypt32.CertAddCertificateContextToStore
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//sys	CertCloseStore(store Handle, flags uint32) (err error) = crypt32.CertCloseStore
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//sys	CertDeleteCertificateFromStore(certContext *CertContext) (err error) = crypt32.CertDeleteCertificateFromStore
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//sys	CertDuplicateCertificateContext(certContext *CertContext) (dupContext *CertContext) = crypt32.CertDuplicateCertificateContext
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//sys	PFXImportCertStore(pfx *CryptDataBlob, password *uint16, flags uint32) (store Handle, err error) = crypt32.PFXImportCertStore
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//sys	CertGetCertificateChain(engine Handle, leaf *CertContext, time *Filetime, additionalStore Handle, para *CertChainPara, flags uint32, reserved uintptr, chainCtx **CertChainContext) (err error) = crypt32.CertGetCertificateChain
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//sys	CertFreeCertificateChain(ctx *CertChainContext) = crypt32.CertFreeCertificateChain
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//sys	CertCreateCertificateContext(certEncodingType uint32, certEncoded *byte, encodedLen uint32) (context *CertContext, err error) [failretval==nil] = crypt32.CertCreateCertificateContext
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//sys	CertFreeCertificateContext(ctx *CertContext) (err error) = crypt32.CertFreeCertificateContext
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//sys	CertVerifyCertificateChainPolicy(policyOID uintptr, chain *CertChainContext, para *CertChainPolicyPara, status *CertChainPolicyStatus) (err error) = crypt32.CertVerifyCertificateChainPolicy
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//sys	CertGetNameString(certContext *CertContext, nameType uint32, flags uint32, typePara unsafe.Pointer, name *uint16, size uint32) (chars uint32) = crypt32.CertGetNameStringW
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//sys	CertFindExtension(objId *byte, countExtensions uint32, extensions *CertExtension) (ret *CertExtension) = crypt32.CertFindExtension
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//sys   CertFindCertificateInStore(store Handle, certEncodingType uint32, findFlags uint32, findType uint32, findPara unsafe.Pointer, prevCertContext *CertContext) (cert *CertContext, err error) [failretval==nil] = crypt32.CertFindCertificateInStore
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//sys   CertFindChainInStore(store Handle, certEncodingType uint32, findFlags uint32, findType uint32, findPara unsafe.Pointer, prevChainContext *CertChainContext) (certchain *CertChainContext, err error) [failretval==nil] = crypt32.CertFindChainInStore
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//sys   CryptAcquireCertificatePrivateKey(cert *CertContext, flags uint32, parameters unsafe.Pointer, cryptProvOrNCryptKey *Handle, keySpec *uint32, callerFreeProvOrNCryptKey *bool) (err error) = crypt32.CryptAcquireCertificatePrivateKey
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//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
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//sys	CryptDecodeObject(encodingType uint32, structType *byte, encodedBytes *byte, lenEncodedBytes uint32, flags uint32, decoded unsafe.Pointer, decodedLen *uint32) (err error) = crypt32.CryptDecodeObject
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//sys	CryptProtectData(dataIn *DataBlob, name *uint16, optionalEntropy *DataBlob, reserved uintptr, promptStruct *CryptProtectPromptStruct, flags uint32, dataOut *DataBlob) (err error) = crypt32.CryptProtectData
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//sys	CryptUnprotectData(dataIn *DataBlob, name **uint16, optionalEntropy *DataBlob, reserved uintptr, promptStruct *CryptProtectPromptStruct, flags uint32, dataOut *DataBlob) (err error) = crypt32.CryptUnprotectData
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//sys	WinVerifyTrustEx(hwnd HWND, actionId *GUID, data *WinTrustData) (ret error) = wintrust.WinVerifyTrustEx
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//sys	RegOpenKeyEx(key Handle, subkey *uint16, options uint32, desiredAccess uint32, result *Handle) (regerrno error) = advapi32.RegOpenKeyExW
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//sys	RegCloseKey(key Handle) (regerrno error) = advapi32.RegCloseKey
304
//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
305
//sys	RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW
306
//sys	RegQueryValueEx(key Handle, name *uint16, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegQueryValueExW
307
//sys	RegNotifyChangeKeyValue(key Handle, watchSubtree bool, notifyFilter uint32, event Handle, asynchronous bool) (regerrno error) = advapi32.RegNotifyChangeKeyValue
308
//sys	GetCurrentProcessId() (pid uint32) = kernel32.GetCurrentProcessId
309
//sys	ProcessIdToSessionId(pid uint32, sessionid *uint32) (err error) = kernel32.ProcessIdToSessionId
310
//sys	ClosePseudoConsole(console Handle) = kernel32.ClosePseudoConsole
311
//sys	createPseudoConsole(size uint32, in Handle, out Handle, flags uint32, pconsole *Handle) (hr error) = kernel32.CreatePseudoConsole
312
//sys	GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode
313
//sys	SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode
314
//sys	GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo
315
//sys	setConsoleCursorPosition(console Handle, position uint32) (err error) = kernel32.SetConsoleCursorPosition
316
//sys	WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW
317
//sys	ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW
318
//sys	resizePseudoConsole(pconsole Handle, size uint32) (hr error) = kernel32.ResizePseudoConsole
319
//sys	CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot
320
//sys	Module32First(snapshot Handle, moduleEntry *ModuleEntry32) (err error) = kernel32.Module32FirstW
321
//sys	Module32Next(snapshot Handle, moduleEntry *ModuleEntry32) (err error) = kernel32.Module32NextW
322
//sys	Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32FirstW
323
//sys	Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32NextW
324
//sys	Thread32First(snapshot Handle, threadEntry *ThreadEntry32) (err error)
325
//sys	Thread32Next(snapshot Handle, threadEntry *ThreadEntry32) (err error)
326
//sys	DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBufferSize uint32, outBuffer *byte, outBufferSize uint32, bytesReturned *uint32, overlapped *Overlapped) (err error)
327
// This function returns 1 byte BOOLEAN rather than the 4 byte BOOL.
328
//sys	CreateSymbolicLink(symlinkfilename *uint16, targetfilename *uint16, flags uint32) (err error) [failretval&0xff==0] = CreateSymbolicLinkW
329
//sys	CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr) (err error) [failretval&0xff==0] = CreateHardLinkW
330
//sys	GetCurrentThreadId() (id uint32)
331
//sys	CreateEvent(eventAttrs *SecurityAttributes, manualReset uint32, initialState uint32, name *uint16) (handle Handle, err error) [failretval == 0 || e1 == ERROR_ALREADY_EXISTS] = kernel32.CreateEventW
332
//sys	CreateEventEx(eventAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) [failretval == 0 || e1 == ERROR_ALREADY_EXISTS] = kernel32.CreateEventExW
333
//sys	OpenEvent(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenEventW
334
//sys	SetEvent(event Handle) (err error) = kernel32.SetEvent
335
//sys	ResetEvent(event Handle) (err error) = kernel32.ResetEvent
336
//sys	PulseEvent(event Handle) (err error) = kernel32.PulseEvent
337
//sys	CreateMutex(mutexAttrs *SecurityAttributes, initialOwner bool, name *uint16) (handle Handle, err error) [failretval == 0 || e1 == ERROR_ALREADY_EXISTS] = kernel32.CreateMutexW
338
//sys	CreateMutexEx(mutexAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) [failretval == 0 || e1 == ERROR_ALREADY_EXISTS] = kernel32.CreateMutexExW
339
//sys	OpenMutex(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenMutexW
340
//sys	ReleaseMutex(mutex Handle) (err error) = kernel32.ReleaseMutex
341
//sys	SleepEx(milliseconds uint32, alertable bool) (ret uint32) = kernel32.SleepEx
342
//sys	CreateJobObject(jobAttr *SecurityAttributes, name *uint16) (handle Handle, err error) = kernel32.CreateJobObjectW
343
//sys	AssignProcessToJobObject(job Handle, process Handle) (err error) = kernel32.AssignProcessToJobObject
344
//sys	TerminateJobObject(job Handle, exitCode uint32) (err error) = kernel32.TerminateJobObject
345
//sys	SetErrorMode(mode uint32) (ret uint32) = kernel32.SetErrorMode
346
//sys	ResumeThread(thread Handle) (ret uint32, err error) [failretval==0xffffffff] = kernel32.ResumeThread
347
//sys	SetPriorityClass(process Handle, priorityClass uint32) (err error) = kernel32.SetPriorityClass
348
//sys	GetPriorityClass(process Handle) (ret uint32, err error) = kernel32.GetPriorityClass
349
//sys	QueryInformationJobObject(job Handle, JobObjectInformationClass int32, JobObjectInformation uintptr, JobObjectInformationLength uint32, retlen *uint32) (err error) = kernel32.QueryInformationJobObject
350
//sys	SetInformationJobObject(job Handle, JobObjectInformationClass uint32, JobObjectInformation uintptr, JobObjectInformationLength uint32) (ret int, err error)
351
//sys	GenerateConsoleCtrlEvent(ctrlEvent uint32, processGroupID uint32) (err error)
352
//sys	GetProcessId(process Handle) (id uint32, err error)
353
//sys	QueryFullProcessImageName(proc Handle, flags uint32, exeName *uint16, size *uint32) (err error) = kernel32.QueryFullProcessImageNameW
354
//sys	OpenThread(desiredAccess uint32, inheritHandle bool, threadId uint32) (handle Handle, err error)
355
//sys	SetProcessPriorityBoost(process Handle, disable bool) (err error) = kernel32.SetProcessPriorityBoost
356
//sys	GetProcessWorkingSetSizeEx(hProcess Handle, lpMinimumWorkingSetSize *uintptr, lpMaximumWorkingSetSize *uintptr, flags *uint32)
357
//sys	SetProcessWorkingSetSizeEx(hProcess Handle, dwMinimumWorkingSetSize uintptr, dwMaximumWorkingSetSize uintptr, flags uint32) (err error)
358
//sys	ClearCommBreak(handle Handle) (err error)
359
//sys	ClearCommError(handle Handle, lpErrors *uint32, lpStat *ComStat) (err error)
360
//sys	EscapeCommFunction(handle Handle, dwFunc uint32) (err error)
361
//sys	GetCommState(handle Handle, lpDCB *DCB) (err error)
362
//sys	GetCommModemStatus(handle Handle, lpModemStat *uint32) (err error)
363
//sys	GetCommTimeouts(handle Handle, timeouts *CommTimeouts) (err error)
364
//sys	PurgeComm(handle Handle, dwFlags uint32) (err error)
365
//sys	SetCommBreak(handle Handle) (err error)
366
//sys	SetCommMask(handle Handle, dwEvtMask uint32) (err error)
367
//sys	SetCommState(handle Handle, lpDCB *DCB) (err error)
368
//sys	SetCommTimeouts(handle Handle, timeouts *CommTimeouts) (err error)
369
//sys	SetupComm(handle Handle, dwInQueue uint32, dwOutQueue uint32) (err error)
370
//sys	WaitCommEvent(handle Handle, lpEvtMask *uint32, lpOverlapped *Overlapped) (err error)
371
//sys	GetActiveProcessorCount(groupNumber uint16) (ret uint32)
372
//sys	GetMaximumProcessorCount(groupNumber uint16) (ret uint32)
373
//sys	EnumWindows(enumFunc uintptr, param unsafe.Pointer) (err error) = user32.EnumWindows
374
//sys	EnumChildWindows(hwnd HWND, enumFunc uintptr, param unsafe.Pointer) = user32.EnumChildWindows
375
//sys	GetClassName(hwnd HWND, className *uint16, maxCount int32) (copied int32, err error) = user32.GetClassNameW
376
//sys	GetDesktopWindow() (hwnd HWND) = user32.GetDesktopWindow
377
//sys	GetForegroundWindow() (hwnd HWND) = user32.GetForegroundWindow
378
//sys	IsWindow(hwnd HWND) (isWindow bool) = user32.IsWindow
379
//sys	IsWindowUnicode(hwnd HWND) (isUnicode bool) = user32.IsWindowUnicode
380
//sys	IsWindowVisible(hwnd HWND) (isVisible bool) = user32.IsWindowVisible
381
//sys	GetGUIThreadInfo(thread uint32, info *GUIThreadInfo) (err error) = user32.GetGUIThreadInfo
382
//sys	GetLargePageMinimum() (size uintptr)
383

384
// Volume Management Functions
385
//sys	DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW
386
//sys	DeleteVolumeMountPoint(volumeMountPoint *uint16) (err error) = DeleteVolumeMountPointW
387
//sys	FindFirstVolume(volumeName *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeW
388
//sys	FindFirstVolumeMountPoint(rootPathName *uint16, volumeMountPoint *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeMountPointW
389
//sys	FindNextVolume(findVolume Handle, volumeName *uint16, bufferLength uint32) (err error) = FindNextVolumeW
390
//sys	FindNextVolumeMountPoint(findVolumeMountPoint Handle, volumeMountPoint *uint16, bufferLength uint32) (err error) = FindNextVolumeMountPointW
391
//sys	FindVolumeClose(findVolume Handle) (err error)
392
//sys	FindVolumeMountPointClose(findVolumeMountPoint Handle) (err error)
393
//sys	GetDiskFreeSpaceEx(directoryName *uint16, freeBytesAvailableToCaller *uint64, totalNumberOfBytes *uint64, totalNumberOfFreeBytes *uint64) (err error) = GetDiskFreeSpaceExW
394
//sys	GetDriveType(rootPathName *uint16) (driveType uint32) = GetDriveTypeW
395
//sys	GetLogicalDrives() (drivesBitMask uint32, err error) [failretval==0]
396
//sys	GetLogicalDriveStrings(bufferLength uint32, buffer *uint16) (n uint32, err error) [failretval==0] = GetLogicalDriveStringsW
397
//sys	GetVolumeInformation(rootPathName *uint16, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationW
398
//sys	GetVolumeInformationByHandle(file Handle, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationByHandleW
399
//sys	GetVolumeNameForVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16, bufferlength uint32) (err error) = GetVolumeNameForVolumeMountPointW
400
//sys	GetVolumePathName(fileName *uint16, volumePathName *uint16, bufferLength uint32) (err error) = GetVolumePathNameW
401
//sys	GetVolumePathNamesForVolumeName(volumeName *uint16, volumePathNames *uint16, bufferLength uint32, returnLength *uint32) (err error) = GetVolumePathNamesForVolumeNameW
402
//sys	QueryDosDevice(deviceName *uint16, targetPath *uint16, max uint32) (n uint32, err error) [failretval==0] = QueryDosDeviceW
403
//sys	SetVolumeLabel(rootPathName *uint16, volumeName *uint16) (err error) = SetVolumeLabelW
404
//sys	SetVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16) (err error) = SetVolumeMountPointW
405
//sys	InitiateSystemShutdownEx(machineName *uint16, message *uint16, timeout uint32, forceAppsClosed bool, rebootAfterShutdown bool, reason uint32) (err error) = advapi32.InitiateSystemShutdownExW
406
//sys	SetProcessShutdownParameters(level uint32, flags uint32) (err error) = kernel32.SetProcessShutdownParameters
407
//sys	GetProcessShutdownParameters(level *uint32, flags *uint32) (err error) = kernel32.GetProcessShutdownParameters
408
//sys	clsidFromString(lpsz *uint16, pclsid *GUID) (ret error) = ole32.CLSIDFromString
409
//sys	stringFromGUID2(rguid *GUID, lpsz *uint16, cchMax int32) (chars int32) = ole32.StringFromGUID2
410
//sys	coCreateGuid(pguid *GUID) (ret error) = ole32.CoCreateGuid
411
//sys	CoTaskMemFree(address unsafe.Pointer) = ole32.CoTaskMemFree
412
//sys	CoInitializeEx(reserved uintptr, coInit uint32) (ret error) = ole32.CoInitializeEx
413
//sys	CoUninitialize() = ole32.CoUninitialize
414
//sys	CoGetObject(name *uint16, bindOpts *BIND_OPTS3, guid *GUID, functionTable **uintptr) (ret error) = ole32.CoGetObject
415
//sys	getProcessPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetProcessPreferredUILanguages
416
//sys	getThreadPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetThreadPreferredUILanguages
417
//sys	getUserPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetUserPreferredUILanguages
418
//sys	getSystemPreferredUILanguages(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) (err error) = kernel32.GetSystemPreferredUILanguages
419
//sys	findResource(module Handle, name uintptr, resType uintptr) (resInfo Handle, err error) = kernel32.FindResourceW
420
//sys	SizeofResource(module Handle, resInfo Handle) (size uint32, err error) = kernel32.SizeofResource
421
//sys	LoadResource(module Handle, resInfo Handle) (resData Handle, err error) = kernel32.LoadResource
422
//sys	LockResource(resData Handle) (addr uintptr, err error) = kernel32.LockResource
423

424
// Version APIs
425
//sys	GetFileVersionInfoSize(filename string, zeroHandle *Handle) (bufSize uint32, err error) = version.GetFileVersionInfoSizeW
426
//sys	GetFileVersionInfo(filename string, handle uint32, bufSize uint32, buffer unsafe.Pointer) (err error) = version.GetFileVersionInfoW
427
//sys	VerQueryValue(block unsafe.Pointer, subBlock string, pointerToBufferPointer unsafe.Pointer, bufSize *uint32) (err error) = version.VerQueryValueW
428

429
// Process Status API (PSAPI)
430
//sys	enumProcesses(processIds *uint32, nSize uint32, bytesReturned *uint32) (err error) = psapi.EnumProcesses
431
//sys	EnumProcessModules(process Handle, module *Handle, cb uint32, cbNeeded *uint32) (err error) = psapi.EnumProcessModules
432
//sys	EnumProcessModulesEx(process Handle, module *Handle, cb uint32, cbNeeded *uint32, filterFlag uint32) (err error) = psapi.EnumProcessModulesEx
433
//sys	GetModuleInformation(process Handle, module Handle, modinfo *ModuleInfo, cb uint32) (err error) = psapi.GetModuleInformation
434
//sys	GetModuleFileNameEx(process Handle, module Handle, filename *uint16, size uint32) (err error) = psapi.GetModuleFileNameExW
435
//sys	GetModuleBaseName(process Handle, module Handle, baseName *uint16, size uint32) (err error) = psapi.GetModuleBaseNameW
436
//sys   QueryWorkingSetEx(process Handle, pv uintptr, cb uint32) (err error) = psapi.QueryWorkingSetEx
437

438
// NT Native APIs
439
//sys	rtlNtStatusToDosErrorNoTeb(ntstatus NTStatus) (ret syscall.Errno) = ntdll.RtlNtStatusToDosErrorNoTeb
440
//sys	rtlGetVersion(info *OsVersionInfoEx) (ntstatus error) = ntdll.RtlGetVersion
441
//sys	rtlGetNtVersionNumbers(majorVersion *uint32, minorVersion *uint32, buildNumber *uint32) = ntdll.RtlGetNtVersionNumbers
442
//sys	RtlGetCurrentPeb() (peb *PEB) = ntdll.RtlGetCurrentPeb
443
//sys	RtlInitUnicodeString(destinationString *NTUnicodeString, sourceString *uint16) = ntdll.RtlInitUnicodeString
444
//sys	RtlInitString(destinationString *NTString, sourceString *byte) = ntdll.RtlInitString
445
//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
446
//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
447
//sys	NtSetInformationFile(handle Handle, iosb *IO_STATUS_BLOCK, inBuffer *byte, inBufferLen uint32, class uint32) (ntstatus error) = ntdll.NtSetInformationFile
448
//sys	RtlDosPathNameToNtPathName(dosName *uint16, ntName *NTUnicodeString, ntFileNamePart *uint16, relativeName *RTL_RELATIVE_NAME) (ntstatus error) = ntdll.RtlDosPathNameToNtPathName_U_WithStatus
449
//sys	RtlDosPathNameToRelativeNtPathName(dosName *uint16, ntName *NTUnicodeString, ntFileNamePart *uint16, relativeName *RTL_RELATIVE_NAME) (ntstatus error) = ntdll.RtlDosPathNameToRelativeNtPathName_U_WithStatus
450
//sys	RtlDefaultNpAcl(acl **ACL) (ntstatus error) = ntdll.RtlDefaultNpAcl
451
//sys	NtQueryInformationProcess(proc Handle, procInfoClass int32, procInfo unsafe.Pointer, procInfoLen uint32, retLen *uint32) (ntstatus error) = ntdll.NtQueryInformationProcess
452
//sys	NtSetInformationProcess(proc Handle, procInfoClass int32, procInfo unsafe.Pointer, procInfoLen uint32) (ntstatus error) = ntdll.NtSetInformationProcess
453
//sys	NtQuerySystemInformation(sysInfoClass int32, sysInfo unsafe.Pointer, sysInfoLen uint32, retLen *uint32) (ntstatus error) = ntdll.NtQuerySystemInformation
454
//sys	NtSetSystemInformation(sysInfoClass int32, sysInfo unsafe.Pointer, sysInfoLen uint32) (ntstatus error) = ntdll.NtSetSystemInformation
455
//sys	RtlAddFunctionTable(functionTable *RUNTIME_FUNCTION, entryCount uint32, baseAddress uintptr) (ret bool) = ntdll.RtlAddFunctionTable
456
//sys	RtlDeleteFunctionTable(functionTable *RUNTIME_FUNCTION) (ret bool) = ntdll.RtlDeleteFunctionTable
457

458
// Desktop Window Manager API (Dwmapi)
459
//sys	DwmGetWindowAttribute(hwnd HWND, attribute uint32, value unsafe.Pointer, size uint32) (ret error) = dwmapi.DwmGetWindowAttribute
460
//sys	DwmSetWindowAttribute(hwnd HWND, attribute uint32, value unsafe.Pointer, size uint32) (ret error) = dwmapi.DwmSetWindowAttribute
461

462
// Windows Multimedia API
463
//sys TimeBeginPeriod (period uint32) (err error) [failretval != 0] = winmm.timeBeginPeriod
464
//sys TimeEndPeriod (period uint32) (err error) [failretval != 0] = winmm.timeEndPeriod
465

466
// syscall interface implementation for other packages
467

468
// GetCurrentProcess returns the handle for the current process.
469
// It is a pseudo handle that does not need to be closed.
470
// The returned error is always nil.
471
//
472
// Deprecated: use CurrentProcess for the same Handle without the nil
473
// error.
474
func GetCurrentProcess() (Handle, error) {
475
	return CurrentProcess(), nil
476
}
477

478
// CurrentProcess returns the handle for the current process.
479
// It is a pseudo handle that does not need to be closed.
480
func CurrentProcess() Handle { return Handle(^uintptr(1 - 1)) }
481

482
// GetCurrentThread returns the handle for the current thread.
483
// It is a pseudo handle that does not need to be closed.
484
// The returned error is always nil.
485
//
486
// Deprecated: use CurrentThread for the same Handle without the nil
487
// error.
488
func GetCurrentThread() (Handle, error) {
489
	return CurrentThread(), nil
490
}
491

492
// CurrentThread returns the handle for the current thread.
493
// It is a pseudo handle that does not need to be closed.
494
func CurrentThread() Handle { return Handle(^uintptr(2 - 1)) }
495

496
// GetProcAddressByOrdinal retrieves the address of the exported
497
// function from module by ordinal.
498
func GetProcAddressByOrdinal(module Handle, ordinal uintptr) (proc uintptr, err error) {
499
	r0, _, e1 := syscall.Syscall(procGetProcAddress.Addr(), 2, uintptr(module), ordinal, 0)
500
	proc = uintptr(r0)
501
	if proc == 0 {
502
		err = errnoErr(e1)
503
	}
504
	return
505
}
506

507
func Exit(code int) { ExitProcess(uint32(code)) }
508

509
func makeInheritSa() *SecurityAttributes {
510
	var sa SecurityAttributes
511
	sa.Length = uint32(unsafe.Sizeof(sa))
512
	sa.InheritHandle = 1
513
	return &sa
514
}
515

516
func Open(path string, mode int, perm uint32) (fd Handle, err error) {
517
	if len(path) == 0 {
518
		return InvalidHandle, ERROR_FILE_NOT_FOUND
519
	}
520
	pathp, err := UTF16PtrFromString(path)
521
	if err != nil {
522
		return InvalidHandle, err
523
	}
524
	var access uint32
525
	switch mode & (O_RDONLY | O_WRONLY | O_RDWR) {
526
	case O_RDONLY:
527
		access = GENERIC_READ
528
	case O_WRONLY:
529
		access = GENERIC_WRITE
530
	case O_RDWR:
531
		access = GENERIC_READ | GENERIC_WRITE
532
	}
533
	if mode&O_CREAT != 0 {
534
		access |= GENERIC_WRITE
535
	}
536
	if mode&O_APPEND != 0 {
537
		access &^= GENERIC_WRITE
538
		access |= FILE_APPEND_DATA
539
	}
540
	sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE)
541
	var sa *SecurityAttributes
542
	if mode&O_CLOEXEC == 0 {
543
		sa = makeInheritSa()
544
	}
545
	var createmode uint32
546
	switch {
547
	case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL):
548
		createmode = CREATE_NEW
549
	case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC):
550
		createmode = CREATE_ALWAYS
551
	case mode&O_CREAT == O_CREAT:
552
		createmode = OPEN_ALWAYS
553
	case mode&O_TRUNC == O_TRUNC:
554
		createmode = TRUNCATE_EXISTING
555
	default:
556
		createmode = OPEN_EXISTING
557
	}
558
	var attrs uint32 = FILE_ATTRIBUTE_NORMAL
559
	if perm&S_IWRITE == 0 {
560
		attrs = FILE_ATTRIBUTE_READONLY
561
	}
562
	h, e := CreateFile(pathp, access, sharemode, sa, createmode, attrs, 0)
563
	return h, e
564
}
565

566
func Read(fd Handle, p []byte) (n int, err error) {
567
	var done uint32
568
	e := ReadFile(fd, p, &done, nil)
569
	if e != nil {
570
		if e == ERROR_BROKEN_PIPE {
571
			// NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin
572
			return 0, nil
573
		}
574
		return 0, e
575
	}
576
	return int(done), nil
577
}
578

579
func Write(fd Handle, p []byte) (n int, err error) {
580
	if raceenabled {
581
		raceReleaseMerge(unsafe.Pointer(&ioSync))
582
	}
583
	var done uint32
584
	e := WriteFile(fd, p, &done, nil)
585
	if e != nil {
586
		return 0, e
587
	}
588
	return int(done), nil
589
}
590

591
func ReadFile(fd Handle, p []byte, done *uint32, overlapped *Overlapped) error {
592
	err := readFile(fd, p, done, overlapped)
593
	if raceenabled {
594
		if *done > 0 {
595
			raceWriteRange(unsafe.Pointer(&p[0]), int(*done))
596
		}
597
		raceAcquire(unsafe.Pointer(&ioSync))
598
	}
599
	return err
600
}
601

602
func WriteFile(fd Handle, p []byte, done *uint32, overlapped *Overlapped) error {
603
	if raceenabled {
604
		raceReleaseMerge(unsafe.Pointer(&ioSync))
605
	}
606
	err := writeFile(fd, p, done, overlapped)
607
	if raceenabled && *done > 0 {
608
		raceReadRange(unsafe.Pointer(&p[0]), int(*done))
609
	}
610
	return err
611
}
612

613
var ioSync int64
614

615
func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) {
616
	var w uint32
617
	switch whence {
618
	case 0:
619
		w = FILE_BEGIN
620
	case 1:
621
		w = FILE_CURRENT
622
	case 2:
623
		w = FILE_END
624
	}
625
	hi := int32(offset >> 32)
626
	lo := int32(offset)
627
	// use GetFileType to check pipe, pipe can't do seek
628
	ft, _ := GetFileType(fd)
629
	if ft == FILE_TYPE_PIPE {
630
		return 0, syscall.EPIPE
631
	}
632
	rlo, e := SetFilePointer(fd, lo, &hi, w)
633
	if e != nil {
634
		return 0, e
635
	}
636
	return int64(hi)<<32 + int64(rlo), nil
637
}
638

639
func Close(fd Handle) (err error) {
640
	return CloseHandle(fd)
641
}
642

643
var (
644
	Stdin  = getStdHandle(STD_INPUT_HANDLE)
645
	Stdout = getStdHandle(STD_OUTPUT_HANDLE)
646
	Stderr = getStdHandle(STD_ERROR_HANDLE)
647
)
648

649
func getStdHandle(stdhandle uint32) (fd Handle) {
650
	r, _ := GetStdHandle(stdhandle)
651
	return r
652
}
653

654
const ImplementsGetwd = true
655

656
func Getwd() (wd string, err error) {
657
	b := make([]uint16, 300)
658
	n, e := GetCurrentDirectory(uint32(len(b)), &b[0])
659
	if e != nil {
660
		return "", e
661
	}
662
	return string(utf16.Decode(b[0:n])), nil
663
}
664

665
func Chdir(path string) (err error) {
666
	pathp, err := UTF16PtrFromString(path)
667
	if err != nil {
668
		return err
669
	}
670
	return SetCurrentDirectory(pathp)
671
}
672

673
func Mkdir(path string, mode uint32) (err error) {
674
	pathp, err := UTF16PtrFromString(path)
675
	if err != nil {
676
		return err
677
	}
678
	return CreateDirectory(pathp, nil)
679
}
680

681
func Rmdir(path string) (err error) {
682
	pathp, err := UTF16PtrFromString(path)
683
	if err != nil {
684
		return err
685
	}
686
	return RemoveDirectory(pathp)
687
}
688

689
func Unlink(path string) (err error) {
690
	pathp, err := UTF16PtrFromString(path)
691
	if err != nil {
692
		return err
693
	}
694
	return DeleteFile(pathp)
695
}
696

697
func Rename(oldpath, newpath string) (err error) {
698
	from, err := UTF16PtrFromString(oldpath)
699
	if err != nil {
700
		return err
701
	}
702
	to, err := UTF16PtrFromString(newpath)
703
	if err != nil {
704
		return err
705
	}
706
	return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING)
707
}
708

709
func ComputerName() (name string, err error) {
710
	var n uint32 = MAX_COMPUTERNAME_LENGTH + 1
711
	b := make([]uint16, n)
712
	e := GetComputerName(&b[0], &n)
713
	if e != nil {
714
		return "", e
715
	}
716
	return string(utf16.Decode(b[0:n])), nil
717
}
718

719
func DurationSinceBoot() time.Duration {
720
	return time.Duration(getTickCount64()) * time.Millisecond
721
}
722

723
func Ftruncate(fd Handle, length int64) (err error) {
724
	curoffset, e := Seek(fd, 0, 1)
725
	if e != nil {
726
		return e
727
	}
728
	defer Seek(fd, curoffset, 0)
729
	_, e = Seek(fd, length, 0)
730
	if e != nil {
731
		return e
732
	}
733
	e = SetEndOfFile(fd)
734
	if e != nil {
735
		return e
736
	}
737
	return nil
738
}
739

740
func Gettimeofday(tv *Timeval) (err error) {
741
	var ft Filetime
742
	GetSystemTimeAsFileTime(&ft)
743
	*tv = NsecToTimeval(ft.Nanoseconds())
744
	return nil
745
}
746

747
func Pipe(p []Handle) (err error) {
748
	if len(p) != 2 {
749
		return syscall.EINVAL
750
	}
751
	var r, w Handle
752
	e := CreatePipe(&r, &w, makeInheritSa(), 0)
753
	if e != nil {
754
		return e
755
	}
756
	p[0] = r
757
	p[1] = w
758
	return nil
759
}
760

761
func Utimes(path string, tv []Timeval) (err error) {
762
	if len(tv) != 2 {
763
		return syscall.EINVAL
764
	}
765
	pathp, e := UTF16PtrFromString(path)
766
	if e != nil {
767
		return e
768
	}
769
	h, e := CreateFile(pathp,
770
		FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil,
771
		OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0)
772
	if e != nil {
773
		return e
774
	}
775
	defer CloseHandle(h)
776
	a := NsecToFiletime(tv[0].Nanoseconds())
777
	w := NsecToFiletime(tv[1].Nanoseconds())
778
	return SetFileTime(h, nil, &a, &w)
779
}
780

781
func UtimesNano(path string, ts []Timespec) (err error) {
782
	if len(ts) != 2 {
783
		return syscall.EINVAL
784
	}
785
	pathp, e := UTF16PtrFromString(path)
786
	if e != nil {
787
		return e
788
	}
789
	h, e := CreateFile(pathp,
790
		FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil,
791
		OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0)
792
	if e != nil {
793
		return e
794
	}
795
	defer CloseHandle(h)
796
	a := NsecToFiletime(TimespecToNsec(ts[0]))
797
	w := NsecToFiletime(TimespecToNsec(ts[1]))
798
	return SetFileTime(h, nil, &a, &w)
799
}
800

801
func Fsync(fd Handle) (err error) {
802
	return FlushFileBuffers(fd)
803
}
804

805
func Chmod(path string, mode uint32) (err error) {
806
	p, e := UTF16PtrFromString(path)
807
	if e != nil {
808
		return e
809
	}
810
	attrs, e := GetFileAttributes(p)
811
	if e != nil {
812
		return e
813
	}
814
	if mode&S_IWRITE != 0 {
815
		attrs &^= FILE_ATTRIBUTE_READONLY
816
	} else {
817
		attrs |= FILE_ATTRIBUTE_READONLY
818
	}
819
	return SetFileAttributes(p, attrs)
820
}
821

822
func LoadGetSystemTimePreciseAsFileTime() error {
823
	return procGetSystemTimePreciseAsFileTime.Find()
824
}
825

826
func LoadCancelIoEx() error {
827
	return procCancelIoEx.Find()
828
}
829

830
func LoadSetFileCompletionNotificationModes() error {
831
	return procSetFileCompletionNotificationModes.Find()
832
}
833

834
func WaitForMultipleObjects(handles []Handle, waitAll bool, waitMilliseconds uint32) (event uint32, err error) {
835
	// Every other win32 array API takes arguments as "pointer, count", except for this function. So we
836
	// can't declare it as a usual [] type, because mksyscall will use the opposite order. We therefore
837
	// trivially stub this ourselves.
838

839
	var handlePtr *Handle
840
	if len(handles) > 0 {
841
		handlePtr = &handles[0]
842
	}
843
	return waitForMultipleObjects(uint32(len(handles)), uintptr(unsafe.Pointer(handlePtr)), waitAll, waitMilliseconds)
844
}
845

846
// net api calls
847

848
const socket_error = uintptr(^uint32(0))
849

850
//sys	WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup
851
//sys	WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup
852
//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
853
//sys	WSALookupServiceBegin(querySet *WSAQUERYSET, flags uint32, handle *Handle) (err error) [failretval==socket_error] = ws2_32.WSALookupServiceBeginW
854
//sys	WSALookupServiceNext(handle Handle, flags uint32, size *int32, querySet *WSAQUERYSET) (err error) [failretval==socket_error] = ws2_32.WSALookupServiceNextW
855
//sys	WSALookupServiceEnd(handle Handle) (err error) [failretval==socket_error] = ws2_32.WSALookupServiceEnd
856
//sys	socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket
857
//sys	sendto(s Handle, buf []byte, flags int32, to unsafe.Pointer, tolen int32) (err error) [failretval==socket_error] = ws2_32.sendto
858
//sys	recvfrom(s Handle, buf []byte, flags int32, from *RawSockaddrAny, fromlen *int32) (n int32, err error) [failretval==-1] = ws2_32.recvfrom
859
//sys	Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt
860
//sys	Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt
861
//sys	bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind
862
//sys	connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect
863
//sys	getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname
864
//sys	getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername
865
//sys	listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen
866
//sys	shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown
867
//sys	Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket
868
//sys	AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx
869
//sys	GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs
870
//sys	WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv
871
//sys	WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend
872
//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
873
//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
874
//sys	WSASocket(af int32, typ int32, protocol int32, protoInfo *WSAProtocolInfo, group uint32, flags uint32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.WSASocketW
875
//sys	GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname
876
//sys	GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname
877
//sys	Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs
878
//sys	GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname
879
//sys	DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W
880
//sys	DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree
881
//sys	DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W
882
//sys	GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW
883
//sys	FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW
884
//sys	GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry
885
//sys	GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo
886
//sys	SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes
887
//sys	WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW
888
//sys	WSAGetOverlappedResult(h Handle, o *Overlapped, bytes *uint32, wait bool, flags *uint32) (err error) = ws2_32.WSAGetOverlappedResult
889
//sys	GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses
890
//sys	GetACP() (acp uint32) = kernel32.GetACP
891
//sys	MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar
892
//sys	getBestInterfaceEx(sockaddr unsafe.Pointer, pdwBestIfIndex *uint32) (errcode error) = iphlpapi.GetBestInterfaceEx
893

894
// For testing: clients can set this flag to force
895
// creation of IPv6 sockets to return EAFNOSUPPORT.
896
var SocketDisableIPv6 bool
897

898
type RawSockaddrInet4 struct {
899
	Family uint16
900
	Port   uint16
901
	Addr   [4]byte /* in_addr */
902
	Zero   [8]uint8
903
}
904

905
type RawSockaddrInet6 struct {
906
	Family   uint16
907
	Port     uint16
908
	Flowinfo uint32
909
	Addr     [16]byte /* in6_addr */
910
	Scope_id uint32
911
}
912

913
type RawSockaddr struct {
914
	Family uint16
915
	Data   [14]int8
916
}
917

918
type RawSockaddrAny struct {
919
	Addr RawSockaddr
920
	Pad  [100]int8
921
}
922

923
type Sockaddr interface {
924
	sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs
925
}
926

927
type SockaddrInet4 struct {
928
	Port int
929
	Addr [4]byte
930
	raw  RawSockaddrInet4
931
}
932

933
func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) {
934
	if sa.Port < 0 || sa.Port > 0xFFFF {
935
		return nil, 0, syscall.EINVAL
936
	}
937
	sa.raw.Family = AF_INET
938
	p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
939
	p[0] = byte(sa.Port >> 8)
940
	p[1] = byte(sa.Port)
941
	sa.raw.Addr = sa.Addr
942
	return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil
943
}
944

945
type SockaddrInet6 struct {
946
	Port   int
947
	ZoneId uint32
948
	Addr   [16]byte
949
	raw    RawSockaddrInet6
950
}
951

952
func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) {
953
	if sa.Port < 0 || sa.Port > 0xFFFF {
954
		return nil, 0, syscall.EINVAL
955
	}
956
	sa.raw.Family = AF_INET6
957
	p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
958
	p[0] = byte(sa.Port >> 8)
959
	p[1] = byte(sa.Port)
960
	sa.raw.Scope_id = sa.ZoneId
961
	sa.raw.Addr = sa.Addr
962
	return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil
963
}
964

965
type RawSockaddrUnix struct {
966
	Family uint16
967
	Path   [UNIX_PATH_MAX]int8
968
}
969

970
type SockaddrUnix struct {
971
	Name string
972
	raw  RawSockaddrUnix
973
}
974

975
func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) {
976
	name := sa.Name
977
	n := len(name)
978
	if n > len(sa.raw.Path) {
979
		return nil, 0, syscall.EINVAL
980
	}
981
	if n == len(sa.raw.Path) && name[0] != '@' {
982
		return nil, 0, syscall.EINVAL
983
	}
984
	sa.raw.Family = AF_UNIX
985
	for i := 0; i < n; i++ {
986
		sa.raw.Path[i] = int8(name[i])
987
	}
988
	// length is family (uint16), name, NUL.
989
	sl := int32(2)
990
	if n > 0 {
991
		sl += int32(n) + 1
992
	}
993
	if sa.raw.Path[0] == '@' || (sa.raw.Path[0] == 0 && sl > 3) {
994
		// Check sl > 3 so we don't change unnamed socket behavior.
995
		sa.raw.Path[0] = 0
996
		// Don't count trailing NUL for abstract address.
997
		sl--
998
	}
999

1000
	return unsafe.Pointer(&sa.raw), sl, nil
1001
}
1002

1003
type RawSockaddrBth struct {
1004
	AddressFamily  [2]byte
1005
	BtAddr         [8]byte
1006
	ServiceClassId [16]byte
1007
	Port           [4]byte
1008
}
1009

1010
type SockaddrBth struct {
1011
	BtAddr         uint64
1012
	ServiceClassId GUID
1013
	Port           uint32
1014

1015
	raw RawSockaddrBth
1016
}
1017

1018
func (sa *SockaddrBth) sockaddr() (unsafe.Pointer, int32, error) {
1019
	family := AF_BTH
1020
	sa.raw = RawSockaddrBth{
1021
		AddressFamily:  *(*[2]byte)(unsafe.Pointer(&family)),
1022
		BtAddr:         *(*[8]byte)(unsafe.Pointer(&sa.BtAddr)),
1023
		Port:           *(*[4]byte)(unsafe.Pointer(&sa.Port)),
1024
		ServiceClassId: *(*[16]byte)(unsafe.Pointer(&sa.ServiceClassId)),
1025
	}
1026
	return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil
1027
}
1028

1029
func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) {
1030
	switch rsa.Addr.Family {
1031
	case AF_UNIX:
1032
		pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
1033
		sa := new(SockaddrUnix)
1034
		if pp.Path[0] == 0 {
1035
			// "Abstract" Unix domain socket.
1036
			// Rewrite leading NUL as @ for textual display.
1037
			// (This is the standard convention.)
1038
			// Not friendly to overwrite in place,
1039
			// but the callers below don't care.
1040
			pp.Path[0] = '@'
1041
		}
1042

1043
		// Assume path ends at NUL.
1044
		// This is not technically the Linux semantics for
1045
		// abstract Unix domain sockets--they are supposed
1046
		// to be uninterpreted fixed-size binary blobs--but
1047
		// everyone uses this convention.
1048
		n := 0
1049
		for n < len(pp.Path) && pp.Path[n] != 0 {
1050
			n++
1051
		}
1052
		sa.Name = string(unsafe.Slice((*byte)(unsafe.Pointer(&pp.Path[0])), n))
1053
		return sa, nil
1054

1055
	case AF_INET:
1056
		pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
1057
		sa := new(SockaddrInet4)
1058
		p := (*[2]byte)(unsafe.Pointer(&pp.Port))
1059
		sa.Port = int(p[0])<<8 + int(p[1])
1060
		sa.Addr = pp.Addr
1061
		return sa, nil
1062

1063
	case AF_INET6:
1064
		pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
1065
		sa := new(SockaddrInet6)
1066
		p := (*[2]byte)(unsafe.Pointer(&pp.Port))
1067
		sa.Port = int(p[0])<<8 + int(p[1])
1068
		sa.ZoneId = pp.Scope_id
1069
		sa.Addr = pp.Addr
1070
		return sa, nil
1071
	}
1072
	return nil, syscall.EAFNOSUPPORT
1073
}
1074

1075
func Socket(domain, typ, proto int) (fd Handle, err error) {
1076
	if domain == AF_INET6 && SocketDisableIPv6 {
1077
		return InvalidHandle, syscall.EAFNOSUPPORT
1078
	}
1079
	return socket(int32(domain), int32(typ), int32(proto))
1080
}
1081

1082
func SetsockoptInt(fd Handle, level, opt int, value int) (err error) {
1083
	v := int32(value)
1084
	return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v)))
1085
}
1086

1087
func Bind(fd Handle, sa Sockaddr) (err error) {
1088
	ptr, n, err := sa.sockaddr()
1089
	if err != nil {
1090
		return err
1091
	}
1092
	return bind(fd, ptr, n)
1093
}
1094

1095
func Connect(fd Handle, sa Sockaddr) (err error) {
1096
	ptr, n, err := sa.sockaddr()
1097
	if err != nil {
1098
		return err
1099
	}
1100
	return connect(fd, ptr, n)
1101
}
1102

1103
func GetBestInterfaceEx(sa Sockaddr, pdwBestIfIndex *uint32) (err error) {
1104
	ptr, _, err := sa.sockaddr()
1105
	if err != nil {
1106
		return err
1107
	}
1108
	return getBestInterfaceEx(ptr, pdwBestIfIndex)
1109
}
1110

1111
func Getsockname(fd Handle) (sa Sockaddr, err error) {
1112
	var rsa RawSockaddrAny
1113
	l := int32(unsafe.Sizeof(rsa))
1114
	if err = getsockname(fd, &rsa, &l); err != nil {
1115
		return
1116
	}
1117
	return rsa.Sockaddr()
1118
}
1119

1120
func Getpeername(fd Handle) (sa Sockaddr, err error) {
1121
	var rsa RawSockaddrAny
1122
	l := int32(unsafe.Sizeof(rsa))
1123
	if err = getpeername(fd, &rsa, &l); err != nil {
1124
		return
1125
	}
1126
	return rsa.Sockaddr()
1127
}
1128

1129
func Listen(s Handle, n int) (err error) {
1130
	return listen(s, int32(n))
1131
}
1132

1133
func Shutdown(fd Handle, how int) (err error) {
1134
	return shutdown(fd, int32(how))
1135
}
1136

1137
func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) {
1138
	var rsa unsafe.Pointer
1139
	var l int32
1140
	if to != nil {
1141
		rsa, l, err = to.sockaddr()
1142
		if err != nil {
1143
			return err
1144
		}
1145
	}
1146
	return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine)
1147
}
1148

1149
func LoadGetAddrInfo() error {
1150
	return procGetAddrInfoW.Find()
1151
}
1152

1153
var connectExFunc struct {
1154
	once sync.Once
1155
	addr uintptr
1156
	err  error
1157
}
1158

1159
func LoadConnectEx() error {
1160
	connectExFunc.once.Do(func() {
1161
		var s Handle
1162
		s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
1163
		if connectExFunc.err != nil {
1164
			return
1165
		}
1166
		defer CloseHandle(s)
1167
		var n uint32
1168
		connectExFunc.err = WSAIoctl(s,
1169
			SIO_GET_EXTENSION_FUNCTION_POINTER,
1170
			(*byte)(unsafe.Pointer(&WSAID_CONNECTEX)),
1171
			uint32(unsafe.Sizeof(WSAID_CONNECTEX)),
1172
			(*byte)(unsafe.Pointer(&connectExFunc.addr)),
1173
			uint32(unsafe.Sizeof(connectExFunc.addr)),
1174
			&n, nil, 0)
1175
	})
1176
	return connectExFunc.err
1177
}
1178

1179
func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) {
1180
	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)
1181
	if r1 == 0 {
1182
		if e1 != 0 {
1183
			err = error(e1)
1184
		} else {
1185
			err = syscall.EINVAL
1186
		}
1187
	}
1188
	return
1189
}
1190

1191
func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error {
1192
	err := LoadConnectEx()
1193
	if err != nil {
1194
		return errorspkg.New("failed to find ConnectEx: " + err.Error())
1195
	}
1196
	ptr, n, err := sa.sockaddr()
1197
	if err != nil {
1198
		return err
1199
	}
1200
	return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped)
1201
}
1202

1203
var sendRecvMsgFunc struct {
1204
	once     sync.Once
1205
	sendAddr uintptr
1206
	recvAddr uintptr
1207
	err      error
1208
}
1209

1210
func loadWSASendRecvMsg() error {
1211
	sendRecvMsgFunc.once.Do(func() {
1212
		var s Handle
1213
		s, sendRecvMsgFunc.err = Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)
1214
		if sendRecvMsgFunc.err != nil {
1215
			return
1216
		}
1217
		defer CloseHandle(s)
1218
		var n uint32
1219
		sendRecvMsgFunc.err = WSAIoctl(s,
1220
			SIO_GET_EXTENSION_FUNCTION_POINTER,
1221
			(*byte)(unsafe.Pointer(&WSAID_WSARECVMSG)),
1222
			uint32(unsafe.Sizeof(WSAID_WSARECVMSG)),
1223
			(*byte)(unsafe.Pointer(&sendRecvMsgFunc.recvAddr)),
1224
			uint32(unsafe.Sizeof(sendRecvMsgFunc.recvAddr)),
1225
			&n, nil, 0)
1226
		if sendRecvMsgFunc.err != nil {
1227
			return
1228
		}
1229
		sendRecvMsgFunc.err = WSAIoctl(s,
1230
			SIO_GET_EXTENSION_FUNCTION_POINTER,
1231
			(*byte)(unsafe.Pointer(&WSAID_WSASENDMSG)),
1232
			uint32(unsafe.Sizeof(WSAID_WSASENDMSG)),
1233
			(*byte)(unsafe.Pointer(&sendRecvMsgFunc.sendAddr)),
1234
			uint32(unsafe.Sizeof(sendRecvMsgFunc.sendAddr)),
1235
			&n, nil, 0)
1236
	})
1237
	return sendRecvMsgFunc.err
1238
}
1239

1240
func WSASendMsg(fd Handle, msg *WSAMsg, flags uint32, bytesSent *uint32, overlapped *Overlapped, croutine *byte) error {
1241
	err := loadWSASendRecvMsg()
1242
	if err != nil {
1243
		return err
1244
	}
1245
	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)))
1246
	if r1 == socket_error {
1247
		err = errnoErr(e1)
1248
	}
1249
	return err
1250
}
1251

1252
func WSARecvMsg(fd Handle, msg *WSAMsg, bytesReceived *uint32, overlapped *Overlapped, croutine *byte) error {
1253
	err := loadWSASendRecvMsg()
1254
	if err != nil {
1255
		return err
1256
	}
1257
	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)
1258
	if r1 == socket_error {
1259
		err = errnoErr(e1)
1260
	}
1261
	return err
1262
}
1263

1264
// Invented structures to support what package os expects.
1265
type Rusage struct {
1266
	CreationTime Filetime
1267
	ExitTime     Filetime
1268
	KernelTime   Filetime
1269
	UserTime     Filetime
1270
}
1271

1272
type WaitStatus struct {
1273
	ExitCode uint32
1274
}
1275

1276
func (w WaitStatus) Exited() bool { return true }
1277

1278
func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) }
1279

1280
func (w WaitStatus) Signal() Signal { return -1 }
1281

1282
func (w WaitStatus) CoreDump() bool { return false }
1283

1284
func (w WaitStatus) Stopped() bool { return false }
1285

1286
func (w WaitStatus) Continued() bool { return false }
1287

1288
func (w WaitStatus) StopSignal() Signal { return -1 }
1289

1290
func (w WaitStatus) Signaled() bool { return false }
1291

1292
func (w WaitStatus) TrapCause() int { return -1 }
1293

1294
// Timespec is an invented structure on Windows, but here for
1295
// consistency with the corresponding package for other operating systems.
1296
type Timespec struct {
1297
	Sec  int64
1298
	Nsec int64
1299
}
1300

1301
func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
1302

1303
func NsecToTimespec(nsec int64) (ts Timespec) {
1304
	ts.Sec = nsec / 1e9
1305
	ts.Nsec = nsec % 1e9
1306
	return
1307
}
1308

1309
// TODO(brainman): fix all needed for net
1310

1311
func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS }
1312

1313
func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) {
1314
	var rsa RawSockaddrAny
1315
	l := int32(unsafe.Sizeof(rsa))
1316
	n32, err := recvfrom(fd, p, int32(flags), &rsa, &l)
1317
	n = int(n32)
1318
	if err != nil {
1319
		return
1320
	}
1321
	from, err = rsa.Sockaddr()
1322
	return
1323
}
1324

1325
func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) {
1326
	ptr, l, err := to.sockaddr()
1327
	if err != nil {
1328
		return err
1329
	}
1330
	return sendto(fd, p, int32(flags), ptr, l)
1331
}
1332

1333
func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS }
1334

1335
// The Linger struct is wrong but we only noticed after Go 1.
1336
// sysLinger is the real system call structure.
1337

1338
// BUG(brainman): The definition of Linger is not appropriate for direct use
1339
// with Setsockopt and Getsockopt.
1340
// Use SetsockoptLinger instead.
1341

1342
type Linger struct {
1343
	Onoff  int32
1344
	Linger int32
1345
}
1346

1347
type sysLinger struct {
1348
	Onoff  uint16
1349
	Linger uint16
1350
}
1351

1352
type IPMreq struct {
1353
	Multiaddr [4]byte /* in_addr */
1354
	Interface [4]byte /* in_addr */
1355
}
1356

1357
type IPv6Mreq struct {
1358
	Multiaddr [16]byte /* in6_addr */
1359
	Interface uint32
1360
}
1361

1362
func GetsockoptInt(fd Handle, level, opt int) (int, error) {
1363
	v := int32(0)
1364
	l := int32(unsafe.Sizeof(v))
1365
	err := Getsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), &l)
1366
	return int(v), err
1367
}
1368

1369
func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) {
1370
	sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)}
1371
	return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys)))
1372
}
1373

1374
func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) {
1375
	return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4)
1376
}
1377

1378
func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) {
1379
	return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq)))
1380
}
1381

1382
func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) {
1383
	return syscall.EWINDOWS
1384
}
1385

1386
func EnumProcesses(processIds []uint32, bytesReturned *uint32) error {
1387
	// EnumProcesses syscall expects the size parameter to be in bytes, but the code generated with mksyscall uses
1388
	// the length of the processIds slice instead. Hence, this wrapper function is added to fix the discrepancy.
1389
	var p *uint32
1390
	if len(processIds) > 0 {
1391
		p = &processIds[0]
1392
	}
1393
	size := uint32(len(processIds) * 4)
1394
	return enumProcesses(p, size, bytesReturned)
1395
}
1396

1397
func Getpid() (pid int) { return int(GetCurrentProcessId()) }
1398

1399
func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) {
1400
	// NOTE(rsc): The Win32finddata struct is wrong for the system call:
1401
	// the two paths are each one uint16 short. Use the correct struct,
1402
	// a win32finddata1, and then copy the results out.
1403
	// There is no loss of expressivity here, because the final
1404
	// uint16, if it is used, is supposed to be a NUL, and Go doesn't need that.
1405
	// For Go 1.1, we might avoid the allocation of win32finddata1 here
1406
	// by adding a final Bug [2]uint16 field to the struct and then
1407
	// adjusting the fields in the result directly.
1408
	var data1 win32finddata1
1409
	handle, err = findFirstFile1(name, &data1)
1410
	if err == nil {
1411
		copyFindData(data, &data1)
1412
	}
1413
	return
1414
}
1415

1416
func FindNextFile(handle Handle, data *Win32finddata) (err error) {
1417
	var data1 win32finddata1
1418
	err = findNextFile1(handle, &data1)
1419
	if err == nil {
1420
		copyFindData(data, &data1)
1421
	}
1422
	return
1423
}
1424

1425
func getProcessEntry(pid int) (*ProcessEntry32, error) {
1426
	snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)
1427
	if err != nil {
1428
		return nil, err
1429
	}
1430
	defer CloseHandle(snapshot)
1431
	var procEntry ProcessEntry32
1432
	procEntry.Size = uint32(unsafe.Sizeof(procEntry))
1433
	if err = Process32First(snapshot, &procEntry); err != nil {
1434
		return nil, err
1435
	}
1436
	for {
1437
		if procEntry.ProcessID == uint32(pid) {
1438
			return &procEntry, nil
1439
		}
1440
		err = Process32Next(snapshot, &procEntry)
1441
		if err != nil {
1442
			return nil, err
1443
		}
1444
	}
1445
}
1446

1447
func Getppid() (ppid int) {
1448
	pe, err := getProcessEntry(Getpid())
1449
	if err != nil {
1450
		return -1
1451
	}
1452
	return int(pe.ParentProcessID)
1453
}
1454

1455
// TODO(brainman): fix all needed for os
1456
func Fchdir(fd Handle) (err error)             { return syscall.EWINDOWS }
1457
func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS }
1458
func Symlink(path, link string) (err error)    { return syscall.EWINDOWS }
1459

1460
func Fchmod(fd Handle, mode uint32) (err error)        { return syscall.EWINDOWS }
1461
func Chown(path string, uid int, gid int) (err error)  { return syscall.EWINDOWS }
1462
func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS }
1463
func Fchown(fd Handle, uid int, gid int) (err error)   { return syscall.EWINDOWS }
1464

1465
func Getuid() (uid int)                  { return -1 }
1466
func Geteuid() (euid int)                { return -1 }
1467
func Getgid() (gid int)                  { return -1 }
1468
func Getegid() (egid int)                { return -1 }
1469
func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS }
1470

1471
type Signal int
1472

1473
func (s Signal) Signal() {}
1474

1475
func (s Signal) String() string {
1476
	if 0 <= s && int(s) < len(signals) {
1477
		str := signals[s]
1478
		if str != "" {
1479
			return str
1480
		}
1481
	}
1482
	return "signal " + itoa(int(s))
1483
}
1484

1485
func LoadCreateSymbolicLink() error {
1486
	return procCreateSymbolicLinkW.Find()
1487
}
1488

1489
// Readlink returns the destination of the named symbolic link.
1490
func Readlink(path string, buf []byte) (n int, err error) {
1491
	fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING,
1492
		FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0)
1493
	if err != nil {
1494
		return -1, err
1495
	}
1496
	defer CloseHandle(fd)
1497

1498
	rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE)
1499
	var bytesReturned uint32
1500
	err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil)
1501
	if err != nil {
1502
		return -1, err
1503
	}
1504

1505
	rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0]))
1506
	var s string
1507
	switch rdb.ReparseTag {
1508
	case IO_REPARSE_TAG_SYMLINK:
1509
		data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer))
1510
		p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0]))
1511
		s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2])
1512
	case IO_REPARSE_TAG_MOUNT_POINT:
1513
		data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer))
1514
		p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0]))
1515
		s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2])
1516
	default:
1517
		// the path is not a symlink or junction but another type of reparse
1518
		// point
1519
		return -1, syscall.ENOENT
1520
	}
1521
	n = copy(buf, []byte(s))
1522

1523
	return n, nil
1524
}
1525

1526
// GUIDFromString parses a string in the form of
1527
// "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}" into a GUID.
1528
func GUIDFromString(str string) (GUID, error) {
1529
	guid := GUID{}
1530
	str16, err := syscall.UTF16PtrFromString(str)
1531
	if err != nil {
1532
		return guid, err
1533
	}
1534
	err = clsidFromString(str16, &guid)
1535
	if err != nil {
1536
		return guid, err
1537
	}
1538
	return guid, nil
1539
}
1540

1541
// GenerateGUID creates a new random GUID.
1542
func GenerateGUID() (GUID, error) {
1543
	guid := GUID{}
1544
	err := coCreateGuid(&guid)
1545
	if err != nil {
1546
		return guid, err
1547
	}
1548
	return guid, nil
1549
}
1550

1551
// String returns the canonical string form of the GUID,
1552
// in the form of "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}".
1553
func (guid GUID) String() string {
1554
	var str [100]uint16
1555
	chars := stringFromGUID2(&guid, &str[0], int32(len(str)))
1556
	if chars <= 1 {
1557
		return ""
1558
	}
1559
	return string(utf16.Decode(str[:chars-1]))
1560
}
1561

1562
// KnownFolderPath returns a well-known folder path for the current user, specified by one of
1563
// the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag.
1564
func KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) {
1565
	return Token(0).KnownFolderPath(folderID, flags)
1566
}
1567

1568
// KnownFolderPath returns a well-known folder path for the user token, specified by one of
1569
// the FOLDERID_ constants, and chosen and optionally created based on a KF_ flag.
1570
func (t Token) KnownFolderPath(folderID *KNOWNFOLDERID, flags uint32) (string, error) {
1571
	var p *uint16
1572
	err := shGetKnownFolderPath(folderID, flags, t, &p)
1573
	if err != nil {
1574
		return "", err
1575
	}
1576
	defer CoTaskMemFree(unsafe.Pointer(p))
1577
	return UTF16PtrToString(p), nil
1578
}
1579

1580
// RtlGetVersion returns the version of the underlying operating system, ignoring
1581
// manifest semantics but is affected by the application compatibility layer.
1582
func RtlGetVersion() *OsVersionInfoEx {
1583
	info := &OsVersionInfoEx{}
1584
	info.osVersionInfoSize = uint32(unsafe.Sizeof(*info))
1585
	// According to documentation, this function always succeeds.
1586
	// The function doesn't even check the validity of the
1587
	// osVersionInfoSize member. Disassembling ntdll.dll indicates
1588
	// that the documentation is indeed correct about that.
1589
	_ = rtlGetVersion(info)
1590
	return info
1591
}
1592

1593
// RtlGetNtVersionNumbers returns the version of the underlying operating system,
1594
// ignoring manifest semantics and the application compatibility layer.
1595
func RtlGetNtVersionNumbers() (majorVersion, minorVersion, buildNumber uint32) {
1596
	rtlGetNtVersionNumbers(&majorVersion, &minorVersion, &buildNumber)
1597
	buildNumber &= 0xffff
1598
	return
1599
}
1600

1601
// GetProcessPreferredUILanguages retrieves the process preferred UI languages.
1602
func GetProcessPreferredUILanguages(flags uint32) ([]string, error) {
1603
	return getUILanguages(flags, getProcessPreferredUILanguages)
1604
}
1605

1606
// GetThreadPreferredUILanguages retrieves the thread preferred UI languages for the current thread.
1607
func GetThreadPreferredUILanguages(flags uint32) ([]string, error) {
1608
	return getUILanguages(flags, getThreadPreferredUILanguages)
1609
}
1610

1611
// GetUserPreferredUILanguages retrieves information about the user preferred UI languages.
1612
func GetUserPreferredUILanguages(flags uint32) ([]string, error) {
1613
	return getUILanguages(flags, getUserPreferredUILanguages)
1614
}
1615

1616
// GetSystemPreferredUILanguages retrieves the system preferred UI languages.
1617
func GetSystemPreferredUILanguages(flags uint32) ([]string, error) {
1618
	return getUILanguages(flags, getSystemPreferredUILanguages)
1619
}
1620

1621
func getUILanguages(flags uint32, f func(flags uint32, numLanguages *uint32, buf *uint16, bufSize *uint32) error) ([]string, error) {
1622
	size := uint32(128)
1623
	for {
1624
		var numLanguages uint32
1625
		buf := make([]uint16, size)
1626
		err := f(flags, &numLanguages, &buf[0], &size)
1627
		if err == ERROR_INSUFFICIENT_BUFFER {
1628
			continue
1629
		}
1630
		if err != nil {
1631
			return nil, err
1632
		}
1633
		buf = buf[:size]
1634
		if numLanguages == 0 || len(buf) == 0 { // GetProcessPreferredUILanguages may return numLanguages==0 with "\0\0"
1635
			return []string{}, nil
1636
		}
1637
		if buf[len(buf)-1] == 0 {
1638
			buf = buf[:len(buf)-1] // remove terminating null
1639
		}
1640
		languages := make([]string, 0, numLanguages)
1641
		from := 0
1642
		for i, c := range buf {
1643
			if c == 0 {
1644
				languages = append(languages, string(utf16.Decode(buf[from:i])))
1645
				from = i + 1
1646
			}
1647
		}
1648
		return languages, nil
1649
	}
1650
}
1651

1652
func SetConsoleCursorPosition(console Handle, position Coord) error {
1653
	return setConsoleCursorPosition(console, *((*uint32)(unsafe.Pointer(&position))))
1654
}
1655

1656
func GetStartupInfo(startupInfo *StartupInfo) error {
1657
	getStartupInfo(startupInfo)
1658
	return nil
1659
}
1660

1661
func (s NTStatus) Errno() syscall.Errno {
1662
	return rtlNtStatusToDosErrorNoTeb(s)
1663
}
1664

1665
func langID(pri, sub uint16) uint32 { return uint32(sub)<<10 | uint32(pri) }
1666

1667
func (s NTStatus) Error() string {
1668
	b := make([]uint16, 300)
1669
	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)
1670
	if err != nil {
1671
		return fmt.Sprintf("NTSTATUS 0x%08x", uint32(s))
1672
	}
1673
	// trim terminating \r and \n
1674
	for ; n > 0 && (b[n-1] == '\n' || b[n-1] == '\r'); n-- {
1675
	}
1676
	return string(utf16.Decode(b[:n]))
1677
}
1678

1679
// NewNTUnicodeString returns a new NTUnicodeString structure for use with native
1680
// NT APIs that work over the NTUnicodeString type. Note that most Windows APIs
1681
// do not use NTUnicodeString, and instead UTF16PtrFromString should be used for
1682
// the more common *uint16 string type.
1683
func NewNTUnicodeString(s string) (*NTUnicodeString, error) {
1684
	var u NTUnicodeString
1685
	s16, err := UTF16PtrFromString(s)
1686
	if err != nil {
1687
		return nil, err
1688
	}
1689
	RtlInitUnicodeString(&u, s16)
1690
	return &u, nil
1691
}
1692

1693
// Slice returns a uint16 slice that aliases the data in the NTUnicodeString.
1694
func (s *NTUnicodeString) Slice() []uint16 {
1695
	slice := unsafe.Slice(s.Buffer, s.MaximumLength)
1696
	return slice[:s.Length]
1697
}
1698

1699
func (s *NTUnicodeString) String() string {
1700
	return UTF16ToString(s.Slice())
1701
}
1702

1703
// NewNTString returns a new NTString structure for use with native
1704
// NT APIs that work over the NTString type. Note that most Windows APIs
1705
// do not use NTString, and instead UTF16PtrFromString should be used for
1706
// the more common *uint16 string type.
1707
func NewNTString(s string) (*NTString, error) {
1708
	var nts NTString
1709
	s8, err := BytePtrFromString(s)
1710
	if err != nil {
1711
		return nil, err
1712
	}
1713
	RtlInitString(&nts, s8)
1714
	return &nts, nil
1715
}
1716

1717
// Slice returns a byte slice that aliases the data in the NTString.
1718
func (s *NTString) Slice() []byte {
1719
	slice := unsafe.Slice(s.Buffer, s.MaximumLength)
1720
	return slice[:s.Length]
1721
}
1722

1723
func (s *NTString) String() string {
1724
	return ByteSliceToString(s.Slice())
1725
}
1726

1727
// FindResource resolves a resource of the given name and resource type.
1728
func FindResource(module Handle, name, resType ResourceIDOrString) (Handle, error) {
1729
	var namePtr, resTypePtr uintptr
1730
	var name16, resType16 *uint16
1731
	var err error
1732
	resolvePtr := func(i interface{}, keep **uint16) (uintptr, error) {
1733
		switch v := i.(type) {
1734
		case string:
1735
			*keep, err = UTF16PtrFromString(v)
1736
			if err != nil {
1737
				return 0, err
1738
			}
1739
			return uintptr(unsafe.Pointer(*keep)), nil
1740
		case ResourceID:
1741
			return uintptr(v), nil
1742
		}
1743
		return 0, errorspkg.New("parameter must be a ResourceID or a string")
1744
	}
1745
	namePtr, err = resolvePtr(name, &name16)
1746
	if err != nil {
1747
		return 0, err
1748
	}
1749
	resTypePtr, err = resolvePtr(resType, &resType16)
1750
	if err != nil {
1751
		return 0, err
1752
	}
1753
	resInfo, err := findResource(module, namePtr, resTypePtr)
1754
	runtime.KeepAlive(name16)
1755
	runtime.KeepAlive(resType16)
1756
	return resInfo, err
1757
}
1758

1759
func LoadResourceData(module, resInfo Handle) (data []byte, err error) {
1760
	size, err := SizeofResource(module, resInfo)
1761
	if err != nil {
1762
		return
1763
	}
1764
	resData, err := LoadResource(module, resInfo)
1765
	if err != nil {
1766
		return
1767
	}
1768
	ptr, err := LockResource(resData)
1769
	if err != nil {
1770
		return
1771
	}
1772
	data = unsafe.Slice((*byte)(unsafe.Pointer(ptr)), size)
1773
	return
1774
}
1775

1776
// PSAPI_WORKING_SET_EX_BLOCK contains extended working set information for a page.
1777
type PSAPI_WORKING_SET_EX_BLOCK uint64
1778

1779
// Valid returns the validity of this page.
1780
// If this bit is 1, the subsequent members are valid; otherwise they should be ignored.
1781
func (b PSAPI_WORKING_SET_EX_BLOCK) Valid() bool {
1782
	return (b & 1) == 1
1783
}
1784

1785
// ShareCount is the number of processes that share this page. The maximum value of this member is 7.
1786
func (b PSAPI_WORKING_SET_EX_BLOCK) ShareCount() uint64 {
1787
	return b.intField(1, 3)
1788
}
1789

1790
// Win32Protection is the memory protection attributes of the page. For a list of values, see
1791
// https://docs.microsoft.com/en-us/windows/win32/memory/memory-protection-constants
1792
func (b PSAPI_WORKING_SET_EX_BLOCK) Win32Protection() uint64 {
1793
	return b.intField(4, 11)
1794
}
1795

1796
// Shared returns the shared status of this page.
1797
// If this bit is 1, the page can be shared.
1798
func (b PSAPI_WORKING_SET_EX_BLOCK) Shared() bool {
1799
	return (b & (1 << 15)) == 1
1800
}
1801

1802
// Node is the NUMA node. The maximum value of this member is 63.
1803
func (b PSAPI_WORKING_SET_EX_BLOCK) Node() uint64 {
1804
	return b.intField(16, 6)
1805
}
1806

1807
// Locked returns the locked status of this page.
1808
// If this bit is 1, the virtual page is locked in physical memory.
1809
func (b PSAPI_WORKING_SET_EX_BLOCK) Locked() bool {
1810
	return (b & (1 << 22)) == 1
1811
}
1812

1813
// LargePage returns the large page status of this page.
1814
// If this bit is 1, the page is a large page.
1815
func (b PSAPI_WORKING_SET_EX_BLOCK) LargePage() bool {
1816
	return (b & (1 << 23)) == 1
1817
}
1818

1819
// Bad returns the bad status of this page.
1820
// If this bit is 1, the page is has been reported as bad.
1821
func (b PSAPI_WORKING_SET_EX_BLOCK) Bad() bool {
1822
	return (b & (1 << 31)) == 1
1823
}
1824

1825
// intField extracts an integer field in the PSAPI_WORKING_SET_EX_BLOCK union.
1826
func (b PSAPI_WORKING_SET_EX_BLOCK) intField(start, length int) uint64 {
1827
	var mask PSAPI_WORKING_SET_EX_BLOCK
1828
	for pos := start; pos < start+length; pos++ {
1829
		mask |= (1 << pos)
1830
	}
1831

1832
	masked := b & mask
1833
	return uint64(masked >> start)
1834
}
1835

1836
// PSAPI_WORKING_SET_EX_INFORMATION contains extended working set information for a process.
1837
type PSAPI_WORKING_SET_EX_INFORMATION struct {
1838
	// The virtual address.
1839
	VirtualAddress Pointer
1840
	// A PSAPI_WORKING_SET_EX_BLOCK union that indicates the attributes of the page at VirtualAddress.
1841
	VirtualAttributes PSAPI_WORKING_SET_EX_BLOCK
1842
}
1843

1844
// CreatePseudoConsole creates a windows pseudo console.
1845
func CreatePseudoConsole(size Coord, in Handle, out Handle, flags uint32, pconsole *Handle) error {
1846
	// We need this wrapper to manually cast Coord to uint32. The autogenerated wrappers only
1847
	// accept arguments that can be casted to uintptr, and Coord can't.
1848
	return createPseudoConsole(*((*uint32)(unsafe.Pointer(&size))), in, out, flags, pconsole)
1849
}
1850

1851
// ResizePseudoConsole resizes the internal buffers of the pseudo console to the width and height specified in `size`.
1852
func ResizePseudoConsole(pconsole Handle, size Coord) error {
1853
	// We need this wrapper to manually cast Coord to uint32. The autogenerated wrappers only
1854
	// accept arguments that can be casted to uintptr, and Coord can't.
1855
	return resizePseudoConsole(pconsole, *((*uint32)(unsafe.Pointer(&size))))
1856
}
1857

1858
// DCB constants. See https://learn.microsoft.com/en-us/windows/win32/api/winbase/ns-winbase-dcb.
1859
const (
1860
	CBR_110    = 110
1861
	CBR_300    = 300
1862
	CBR_600    = 600
1863
	CBR_1200   = 1200
1864
	CBR_2400   = 2400
1865
	CBR_4800   = 4800
1866
	CBR_9600   = 9600
1867
	CBR_14400  = 14400
1868
	CBR_19200  = 19200
1869
	CBR_38400  = 38400
1870
	CBR_57600  = 57600
1871
	CBR_115200 = 115200
1872
	CBR_128000 = 128000
1873
	CBR_256000 = 256000
1874

1875
	DTR_CONTROL_DISABLE   = 0x00000000
1876
	DTR_CONTROL_ENABLE    = 0x00000010
1877
	DTR_CONTROL_HANDSHAKE = 0x00000020
1878

1879
	RTS_CONTROL_DISABLE   = 0x00000000
1880
	RTS_CONTROL_ENABLE    = 0x00001000
1881
	RTS_CONTROL_HANDSHAKE = 0x00002000
1882
	RTS_CONTROL_TOGGLE    = 0x00003000
1883

1884
	NOPARITY    = 0
1885
	ODDPARITY   = 1
1886
	EVENPARITY  = 2
1887
	MARKPARITY  = 3
1888
	SPACEPARITY = 4
1889

1890
	ONESTOPBIT   = 0
1891
	ONE5STOPBITS = 1
1892
	TWOSTOPBITS  = 2
1893
)
1894

1895
// EscapeCommFunction constants. See https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-escapecommfunction.
1896
const (
1897
	SETXOFF  = 1
1898
	SETXON   = 2
1899
	SETRTS   = 3
1900
	CLRRTS   = 4
1901
	SETDTR   = 5
1902
	CLRDTR   = 6
1903
	SETBREAK = 8
1904
	CLRBREAK = 9
1905
)
1906

1907
// PurgeComm constants. See https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-purgecomm.
1908
const (
1909
	PURGE_TXABORT = 0x0001
1910
	PURGE_RXABORT = 0x0002
1911
	PURGE_TXCLEAR = 0x0004
1912
	PURGE_RXCLEAR = 0x0008
1913
)
1914

1915
// SetCommMask constants. See https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-setcommmask.
1916
const (
1917
	EV_RXCHAR  = 0x0001
1918
	EV_RXFLAG  = 0x0002
1919
	EV_TXEMPTY = 0x0004
1920
	EV_CTS     = 0x0008
1921
	EV_DSR     = 0x0010
1922
	EV_RLSD    = 0x0020
1923
	EV_BREAK   = 0x0040
1924
	EV_ERR     = 0x0080
1925
	EV_RING    = 0x0100
1926
)
1927