1219 lines
46 KiB
Go
1219 lines
46 KiB
Go
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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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"sync"
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"syscall"
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"unicode/utf16"
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"unsafe"
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)
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type Handle uintptr
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const (
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InvalidHandle = ^Handle(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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)
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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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for i := 0; i < len(s); i++ {
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if s[i] == 0 {
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return nil, syscall.EINVAL
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}
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}
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return utf16.Encode([]rune(s + "\x00")), nil
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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 removed.
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func UTF16ToString(s []uint16) string {
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for i, v := range s {
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if v == 0 {
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s = s[0:i]
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break
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}
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}
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return string(utf16.Decode(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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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 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 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 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 CreateFile(name *uint16, access uint32, mode uint32, sa *SecurityAttributes, createmode uint32, attrs uint32, templatefile int32) (handle Handle, err error) [failretval==InvalidHandle] = CreateFileW
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//sys ReadFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (err error)
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//sys WriteFile(handle Handle, buf []byte, done *uint32, overlapped *Overlapped) (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 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 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 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 uint32, threadcnt uint32) (handle Handle, err error)
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//sys GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uint32, overlapped **Overlapped, timeout uint32) (err error)
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//sys PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uint32, 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 OpenProcess(da uint32, inheritHandle bool, pid uint32) (handle Handle, err error)
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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) (err error) = GetStartupInfoW
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//sys GetCurrentProcess() (pseudoHandle Handle, err error)
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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 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 *[8192]*[8192]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 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 CreateFileMapping(fhandle Handle, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle Handle, err error) = 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 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 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) [failretval==InvalidHandle] = 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 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 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
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//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
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//sys RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) = advapi32.RegEnumKeyExW
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//sys RegQueryValueEx(key Handle, name *uint16, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegQueryValueExW
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//sys getCurrentProcessId() (pid uint32) = kernel32.GetCurrentProcessId
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//sys GetConsoleMode(console Handle, mode *uint32) (err error) = kernel32.GetConsoleMode
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//sys SetConsoleMode(console Handle, mode uint32) (err error) = kernel32.SetConsoleMode
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//sys GetConsoleScreenBufferInfo(console Handle, info *ConsoleScreenBufferInfo) (err error) = kernel32.GetConsoleScreenBufferInfo
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//sys WriteConsole(console Handle, buf *uint16, towrite uint32, written *uint32, reserved *byte) (err error) = kernel32.WriteConsoleW
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//sys ReadConsole(console Handle, buf *uint16, toread uint32, read *uint32, inputControl *byte) (err error) = kernel32.ReadConsoleW
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//sys CreateToolhelp32Snapshot(flags uint32, processId uint32) (handle Handle, err error) [failretval==InvalidHandle] = kernel32.CreateToolhelp32Snapshot
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//sys Process32First(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32FirstW
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//sys Process32Next(snapshot Handle, procEntry *ProcessEntry32) (err error) = kernel32.Process32NextW
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//sys DeviceIoControl(handle Handle, ioControlCode uint32, inBuffer *byte, inBufferSize uint32, outBuffer *byte, outBufferSize uint32, bytesReturned *uint32, overlapped *Overlapped) (err error)
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// This function returns 1 byte BOOLEAN rather than the 4 byte BOOL.
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//sys CreateSymbolicLink(symlinkfilename *uint16, targetfilename *uint16, flags uint32) (err error) [failretval&0xff==0] = CreateSymbolicLinkW
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//sys CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr) (err error) [failretval&0xff==0] = CreateHardLinkW
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//sys GetCurrentThreadId() (id uint32)
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//sys CreateEvent(eventAttrs *SecurityAttributes, manualReset uint32, initialState uint32, name *uint16) (handle Handle, err error) = kernel32.CreateEventW
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//sys CreateEventEx(eventAttrs *SecurityAttributes, name *uint16, flags uint32, desiredAccess uint32) (handle Handle, err error) = kernel32.CreateEventExW
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//sys OpenEvent(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) = kernel32.OpenEventW
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//sys SetEvent(event Handle) (err error) = kernel32.SetEvent
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//sys ResetEvent(event Handle) (err error) = kernel32.ResetEvent
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//sys PulseEvent(event Handle) (err error) = kernel32.PulseEvent
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// Volume Management Functions
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//sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW
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|
|
//sys DeleteVolumeMountPoint(volumeMountPoint *uint16) (err error) = DeleteVolumeMountPointW
|
||
|
|
//sys FindFirstVolume(volumeName *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeW
|
||
|
|
//sys FindFirstVolumeMountPoint(rootPathName *uint16, volumeMountPoint *uint16, bufferLength uint32) (handle Handle, err error) [failretval==InvalidHandle] = FindFirstVolumeMountPointW
|
||
|
|
//sys FindNextVolume(findVolume Handle, volumeName *uint16, bufferLength uint32) (err error) = FindNextVolumeW
|
||
|
|
//sys FindNextVolumeMountPoint(findVolumeMountPoint Handle, volumeMountPoint *uint16, bufferLength uint32) (err error) = FindNextVolumeMountPointW
|
||
|
|
//sys FindVolumeClose(findVolume Handle) (err error)
|
||
|
|
//sys FindVolumeMountPointClose(findVolumeMountPoint Handle) (err error)
|
||
|
|
//sys GetDriveType(rootPathName *uint16) (driveType uint32) = GetDriveTypeW
|
||
|
|
//sys GetLogicalDrives() (drivesBitMask uint32, err error) [failretval==0]
|
||
|
|
//sys GetLogicalDriveStrings(bufferLength uint32, buffer *uint16) (n uint32, err error) [failretval==0] = GetLogicalDriveStringsW
|
||
|
|
//sys GetVolumeInformation(rootPathName *uint16, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationW
|
||
|
|
//sys GetVolumeInformationByHandle(file Handle, volumeNameBuffer *uint16, volumeNameSize uint32, volumeNameSerialNumber *uint32, maximumComponentLength *uint32, fileSystemFlags *uint32, fileSystemNameBuffer *uint16, fileSystemNameSize uint32) (err error) = GetVolumeInformationByHandleW
|
||
|
|
//sys GetVolumeNameForVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16, bufferlength uint32) (err error) = GetVolumeNameForVolumeMountPointW
|
||
|
|
//sys GetVolumePathName(fileName *uint16, volumePathName *uint16, bufferLength uint32) (err error) = GetVolumePathNameW
|
||
|
|
//sys GetVolumePathNamesForVolumeName(volumeName *uint16, volumePathNames *uint16, bufferLength uint32, returnLength *uint32) (err error) = GetVolumePathNamesForVolumeNameW
|
||
|
|
//sys QueryDosDevice(deviceName *uint16, targetPath *uint16, max uint32) (n uint32, err error) [failretval==0] = QueryDosDeviceW
|
||
|
|
//sys SetVolumeLabel(rootPathName *uint16, volumeName *uint16) (err error) = SetVolumeLabelW
|
||
|
|
//sys SetVolumeMountPoint(volumeMountPoint *uint16, volumeName *uint16) (err error) = SetVolumeMountPointW
|
||
|
|
|
||
|
|
// syscall interface implementation for other packages
|
||
|
|
|
||
|
|
// GetProcAddressByOrdinal retrieves the address of the exported
|
||
|
|
// function from module by ordinal.
|
||
|
|
func GetProcAddressByOrdinal(module Handle, ordinal uintptr) (proc uintptr, err error) {
|
||
|
|
r0, _, e1 := syscall.Syscall(procGetProcAddress.Addr(), 2, uintptr(module), ordinal, 0)
|
||
|
|
proc = uintptr(r0)
|
||
|
|
if proc == 0 {
|
||
|
|
if e1 != 0 {
|
||
|
|
err = errnoErr(e1)
|
||
|
|
} else {
|
||
|
|
err = syscall.EINVAL
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
func Exit(code int) { ExitProcess(uint32(code)) }
|
||
|
|
|
||
|
|
func makeInheritSa() *SecurityAttributes {
|
||
|
|
var sa SecurityAttributes
|
||
|
|
sa.Length = uint32(unsafe.Sizeof(sa))
|
||
|
|
sa.InheritHandle = 1
|
||
|
|
return &sa
|
||
|
|
}
|
||
|
|
|
||
|
|
func Open(path string, mode int, perm uint32) (fd Handle, err error) {
|
||
|
|
if len(path) == 0 {
|
||
|
|
return InvalidHandle, ERROR_FILE_NOT_FOUND
|
||
|
|
}
|
||
|
|
pathp, err := UTF16PtrFromString(path)
|
||
|
|
if err != nil {
|
||
|
|
return InvalidHandle, err
|
||
|
|
}
|
||
|
|
var access uint32
|
||
|
|
switch mode & (O_RDONLY | O_WRONLY | O_RDWR) {
|
||
|
|
case O_RDONLY:
|
||
|
|
access = GENERIC_READ
|
||
|
|
case O_WRONLY:
|
||
|
|
access = GENERIC_WRITE
|
||
|
|
case O_RDWR:
|
||
|
|
access = GENERIC_READ | GENERIC_WRITE
|
||
|
|
}
|
||
|
|
if mode&O_CREAT != 0 {
|
||
|
|
access |= GENERIC_WRITE
|
||
|
|
}
|
||
|
|
if mode&O_APPEND != 0 {
|
||
|
|
access &^= GENERIC_WRITE
|
||
|
|
access |= FILE_APPEND_DATA
|
||
|
|
}
|
||
|
|
sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE)
|
||
|
|
var sa *SecurityAttributes
|
||
|
|
if mode&O_CLOEXEC == 0 {
|
||
|
|
sa = makeInheritSa()
|
||
|
|
}
|
||
|
|
var createmode uint32
|
||
|
|
switch {
|
||
|
|
case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL):
|
||
|
|
createmode = CREATE_NEW
|
||
|
|
case mode&(O_CREAT|O_TRUNC) == (O_CREAT | O_TRUNC):
|
||
|
|
createmode = CREATE_ALWAYS
|
||
|
|
case mode&O_CREAT == O_CREAT:
|
||
|
|
createmode = OPEN_ALWAYS
|
||
|
|
case mode&O_TRUNC == O_TRUNC:
|
||
|
|
createmode = TRUNCATE_EXISTING
|
||
|
|
default:
|
||
|
|
createmode = OPEN_EXISTING
|
||
|
|
}
|
||
|
|
h, e := CreateFile(pathp, access, sharemode, sa, createmode, FILE_ATTRIBUTE_NORMAL, 0)
|
||
|
|
return h, e
|
||
|
|
}
|
||
|
|
|
||
|
|
func Read(fd Handle, p []byte) (n int, err error) {
|
||
|
|
var done uint32
|
||
|
|
e := ReadFile(fd, p, &done, nil)
|
||
|
|
if e != nil {
|
||
|
|
if e == ERROR_BROKEN_PIPE {
|
||
|
|
// NOTE(brainman): work around ERROR_BROKEN_PIPE is returned on reading EOF from stdin
|
||
|
|
return 0, nil
|
||
|
|
}
|
||
|
|
return 0, e
|
||
|
|
}
|
||
|
|
if raceenabled {
|
||
|
|
if done > 0 {
|
||
|
|
raceWriteRange(unsafe.Pointer(&p[0]), int(done))
|
||
|
|
}
|
||
|
|
raceAcquire(unsafe.Pointer(&ioSync))
|
||
|
|
}
|
||
|
|
return int(done), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func Write(fd Handle, p []byte) (n int, err error) {
|
||
|
|
if raceenabled {
|
||
|
|
raceReleaseMerge(unsafe.Pointer(&ioSync))
|
||
|
|
}
|
||
|
|
var done uint32
|
||
|
|
e := WriteFile(fd, p, &done, nil)
|
||
|
|
if e != nil {
|
||
|
|
return 0, e
|
||
|
|
}
|
||
|
|
if raceenabled && done > 0 {
|
||
|
|
raceReadRange(unsafe.Pointer(&p[0]), int(done))
|
||
|
|
}
|
||
|
|
return int(done), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
var ioSync int64
|
||
|
|
|
||
|
|
func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) {
|
||
|
|
var w uint32
|
||
|
|
switch whence {
|
||
|
|
case 0:
|
||
|
|
w = FILE_BEGIN
|
||
|
|
case 1:
|
||
|
|
w = FILE_CURRENT
|
||
|
|
case 2:
|
||
|
|
w = FILE_END
|
||
|
|
}
|
||
|
|
hi := int32(offset >> 32)
|
||
|
|
lo := int32(offset)
|
||
|
|
// use GetFileType to check pipe, pipe can't do seek
|
||
|
|
ft, _ := GetFileType(fd)
|
||
|
|
if ft == FILE_TYPE_PIPE {
|
||
|
|
return 0, syscall.EPIPE
|
||
|
|
}
|
||
|
|
rlo, e := SetFilePointer(fd, lo, &hi, w)
|
||
|
|
if e != nil {
|
||
|
|
return 0, e
|
||
|
|
}
|
||
|
|
return int64(hi)<<32 + int64(rlo), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func Close(fd Handle) (err error) {
|
||
|
|
return CloseHandle(fd)
|
||
|
|
}
|
||
|
|
|
||
|
|
var (
|
||
|
|
Stdin = getStdHandle(STD_INPUT_HANDLE)
|
||
|
|
Stdout = getStdHandle(STD_OUTPUT_HANDLE)
|
||
|
|
Stderr = getStdHandle(STD_ERROR_HANDLE)
|
||
|
|
)
|
||
|
|
|
||
|
|
func getStdHandle(stdhandle uint32) (fd Handle) {
|
||
|
|
r, _ := GetStdHandle(stdhandle)
|
||
|
|
CloseOnExec(r)
|
||
|
|
return r
|
||
|
|
}
|
||
|
|
|
||
|
|
const ImplementsGetwd = true
|
||
|
|
|
||
|
|
func Getwd() (wd string, err error) {
|
||
|
|
b := make([]uint16, 300)
|
||
|
|
n, e := GetCurrentDirectory(uint32(len(b)), &b[0])
|
||
|
|
if e != nil {
|
||
|
|
return "", e
|
||
|
|
}
|
||
|
|
return string(utf16.Decode(b[0:n])), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func Chdir(path string) (err error) {
|
||
|
|
pathp, err := UTF16PtrFromString(path)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return SetCurrentDirectory(pathp)
|
||
|
|
}
|
||
|
|
|
||
|
|
func Mkdir(path string, mode uint32) (err error) {
|
||
|
|
pathp, err := UTF16PtrFromString(path)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return CreateDirectory(pathp, nil)
|
||
|
|
}
|
||
|
|
|
||
|
|
func Rmdir(path string) (err error) {
|
||
|
|
pathp, err := UTF16PtrFromString(path)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return RemoveDirectory(pathp)
|
||
|
|
}
|
||
|
|
|
||
|
|
func Unlink(path string) (err error) {
|
||
|
|
pathp, err := UTF16PtrFromString(path)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return DeleteFile(pathp)
|
||
|
|
}
|
||
|
|
|
||
|
|
func Rename(oldpath, newpath string) (err error) {
|
||
|
|
from, err := UTF16PtrFromString(oldpath)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
to, err := UTF16PtrFromString(newpath)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING)
|
||
|
|
}
|
||
|
|
|
||
|
|
func ComputerName() (name string, err error) {
|
||
|
|
var n uint32 = MAX_COMPUTERNAME_LENGTH + 1
|
||
|
|
b := make([]uint16, n)
|
||
|
|
e := GetComputerName(&b[0], &n)
|
||
|
|
if e != nil {
|
||
|
|
return "", e
|
||
|
|
}
|
||
|
|
return string(utf16.Decode(b[0:n])), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func Ftruncate(fd Handle, length int64) (err error) {
|
||
|
|
curoffset, e := Seek(fd, 0, 1)
|
||
|
|
if e != nil {
|
||
|
|
return e
|
||
|
|
}
|
||
|
|
defer Seek(fd, curoffset, 0)
|
||
|
|
_, e = Seek(fd, length, 0)
|
||
|
|
if e != nil {
|
||
|
|
return e
|
||
|
|
}
|
||
|
|
e = SetEndOfFile(fd)
|
||
|
|
if e != nil {
|
||
|
|
return e
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func Gettimeofday(tv *Timeval) (err error) {
|
||
|
|
var ft Filetime
|
||
|
|
GetSystemTimeAsFileTime(&ft)
|
||
|
|
*tv = NsecToTimeval(ft.Nanoseconds())
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func Pipe(p []Handle) (err error) {
|
||
|
|
if len(p) != 2 {
|
||
|
|
return syscall.EINVAL
|
||
|
|
}
|
||
|
|
var r, w Handle
|
||
|
|
e := CreatePipe(&r, &w, makeInheritSa(), 0)
|
||
|
|
if e != nil {
|
||
|
|
return e
|
||
|
|
}
|
||
|
|
p[0] = r
|
||
|
|
p[1] = w
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func Utimes(path string, tv []Timeval) (err error) {
|
||
|
|
if len(tv) != 2 {
|
||
|
|
return syscall.EINVAL
|
||
|
|
}
|
||
|
|
pathp, e := UTF16PtrFromString(path)
|
||
|
|
if e != nil {
|
||
|
|
return e
|
||
|
|
}
|
||
|
|
h, e := CreateFile(pathp,
|
||
|
|
FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil,
|
||
|
|
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0)
|
||
|
|
if e != nil {
|
||
|
|
return e
|
||
|
|
}
|
||
|
|
defer Close(h)
|
||
|
|
a := NsecToFiletime(tv[0].Nanoseconds())
|
||
|
|
w := NsecToFiletime(tv[1].Nanoseconds())
|
||
|
|
return SetFileTime(h, nil, &a, &w)
|
||
|
|
}
|
||
|
|
|
||
|
|
func UtimesNano(path string, ts []Timespec) (err error) {
|
||
|
|
if len(ts) != 2 {
|
||
|
|
return syscall.EINVAL
|
||
|
|
}
|
||
|
|
pathp, e := UTF16PtrFromString(path)
|
||
|
|
if e != nil {
|
||
|
|
return e
|
||
|
|
}
|
||
|
|
h, e := CreateFile(pathp,
|
||
|
|
FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil,
|
||
|
|
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0)
|
||
|
|
if e != nil {
|
||
|
|
return e
|
||
|
|
}
|
||
|
|
defer Close(h)
|
||
|
|
a := NsecToFiletime(TimespecToNsec(ts[0]))
|
||
|
|
w := NsecToFiletime(TimespecToNsec(ts[1]))
|
||
|
|
return SetFileTime(h, nil, &a, &w)
|
||
|
|
}
|
||
|
|
|
||
|
|
func Fsync(fd Handle) (err error) {
|
||
|
|
return FlushFileBuffers(fd)
|
||
|
|
}
|
||
|
|
|
||
|
|
func Chmod(path string, mode uint32) (err error) {
|
||
|
|
if mode == 0 {
|
||
|
|
return syscall.EINVAL
|
||
|
|
}
|
||
|
|
p, e := UTF16PtrFromString(path)
|
||
|
|
if e != nil {
|
||
|
|
return e
|
||
|
|
}
|
||
|
|
attrs, e := GetFileAttributes(p)
|
||
|
|
if e != nil {
|
||
|
|
return e
|
||
|
|
}
|
||
|
|
if mode&S_IWRITE != 0 {
|
||
|
|
attrs &^= FILE_ATTRIBUTE_READONLY
|
||
|
|
} else {
|
||
|
|
attrs |= FILE_ATTRIBUTE_READONLY
|
||
|
|
}
|
||
|
|
return SetFileAttributes(p, attrs)
|
||
|
|
}
|
||
|
|
|
||
|
|
func LoadGetSystemTimePreciseAsFileTime() error {
|
||
|
|
return procGetSystemTimePreciseAsFileTime.Find()
|
||
|
|
}
|
||
|
|
|
||
|
|
func LoadCancelIoEx() error {
|
||
|
|
return procCancelIoEx.Find()
|
||
|
|
}
|
||
|
|
|
||
|
|
func LoadSetFileCompletionNotificationModes() error {
|
||
|
|
return procSetFileCompletionNotificationModes.Find()
|
||
|
|
}
|
||
|
|
|
||
|
|
func WaitForMultipleObjects(handles []Handle, waitAll bool, waitMilliseconds uint32) (event uint32, err error) {
|
||
|
|
// Every other win32 array API takes arguments as "pointer, count", except for this function. So we
|
||
|
|
// can't declare it as a usual [] type, because mksyscall will use the opposite order. We therefore
|
||
|
|
// trivially stub this ourselves.
|
||
|
|
|
||
|
|
var handlePtr *Handle
|
||
|
|
if len(handles) > 0 {
|
||
|
|
handlePtr = &handles[0]
|
||
|
|
}
|
||
|
|
return waitForMultipleObjects(uint32(len(handles)), uintptr(unsafe.Pointer(handlePtr)), waitAll, waitMilliseconds)
|
||
|
|
}
|
||
|
|
|
||
|
|
// net api calls
|
||
|
|
|
||
|
|
const socket_error = uintptr(^uint32(0))
|
||
|
|
|
||
|
|
//sys WSAStartup(verreq uint32, data *WSAData) (sockerr error) = ws2_32.WSAStartup
|
||
|
|
//sys WSACleanup() (err error) [failretval==socket_error] = ws2_32.WSACleanup
|
||
|
|
//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
|
||
|
|
//sys socket(af int32, typ int32, protocol int32) (handle Handle, err error) [failretval==InvalidHandle] = ws2_32.socket
|
||
|
|
//sys Setsockopt(s Handle, level int32, optname int32, optval *byte, optlen int32) (err error) [failretval==socket_error] = ws2_32.setsockopt
|
||
|
|
//sys Getsockopt(s Handle, level int32, optname int32, optval *byte, optlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockopt
|
||
|
|
//sys bind(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.bind
|
||
|
|
//sys connect(s Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socket_error] = ws2_32.connect
|
||
|
|
//sys getsockname(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getsockname
|
||
|
|
//sys getpeername(s Handle, rsa *RawSockaddrAny, addrlen *int32) (err error) [failretval==socket_error] = ws2_32.getpeername
|
||
|
|
//sys listen(s Handle, backlog int32) (err error) [failretval==socket_error] = ws2_32.listen
|
||
|
|
//sys shutdown(s Handle, how int32) (err error) [failretval==socket_error] = ws2_32.shutdown
|
||
|
|
//sys Closesocket(s Handle) (err error) [failretval==socket_error] = ws2_32.closesocket
|
||
|
|
//sys AcceptEx(ls Handle, as Handle, buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, recvd *uint32, overlapped *Overlapped) (err error) = mswsock.AcceptEx
|
||
|
|
//sys GetAcceptExSockaddrs(buf *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, lrsa **RawSockaddrAny, lrsalen *int32, rrsa **RawSockaddrAny, rrsalen *int32) = mswsock.GetAcceptExSockaddrs
|
||
|
|
//sys WSARecv(s Handle, bufs *WSABuf, bufcnt uint32, recvd *uint32, flags *uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSARecv
|
||
|
|
//sys WSASend(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, overlapped *Overlapped, croutine *byte) (err error) [failretval==socket_error] = ws2_32.WSASend
|
||
|
|
//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
|
||
|
|
//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
|
||
|
|
//sys GetHostByName(name string) (h *Hostent, err error) [failretval==nil] = ws2_32.gethostbyname
|
||
|
|
//sys GetServByName(name string, proto string) (s *Servent, err error) [failretval==nil] = ws2_32.getservbyname
|
||
|
|
//sys Ntohs(netshort uint16) (u uint16) = ws2_32.ntohs
|
||
|
|
//sys GetProtoByName(name string) (p *Protoent, err error) [failretval==nil] = ws2_32.getprotobyname
|
||
|
|
//sys DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) = dnsapi.DnsQuery_W
|
||
|
|
//sys DnsRecordListFree(rl *DNSRecord, freetype uint32) = dnsapi.DnsRecordListFree
|
||
|
|
//sys DnsNameCompare(name1 *uint16, name2 *uint16) (same bool) = dnsapi.DnsNameCompare_W
|
||
|
|
//sys GetAddrInfoW(nodename *uint16, servicename *uint16, hints *AddrinfoW, result **AddrinfoW) (sockerr error) = ws2_32.GetAddrInfoW
|
||
|
|
//sys FreeAddrInfoW(addrinfo *AddrinfoW) = ws2_32.FreeAddrInfoW
|
||
|
|
//sys GetIfEntry(pIfRow *MibIfRow) (errcode error) = iphlpapi.GetIfEntry
|
||
|
|
//sys GetAdaptersInfo(ai *IpAdapterInfo, ol *uint32) (errcode error) = iphlpapi.GetAdaptersInfo
|
||
|
|
//sys SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error) = kernel32.SetFileCompletionNotificationModes
|
||
|
|
//sys WSAEnumProtocols(protocols *int32, protocolBuffer *WSAProtocolInfo, bufferLength *uint32) (n int32, err error) [failretval==-1] = ws2_32.WSAEnumProtocolsW
|
||
|
|
//sys GetAdaptersAddresses(family uint32, flags uint32, reserved uintptr, adapterAddresses *IpAdapterAddresses, sizePointer *uint32) (errcode error) = iphlpapi.GetAdaptersAddresses
|
||
|
|
//sys GetACP() (acp uint32) = kernel32.GetACP
|
||
|
|
//sys MultiByteToWideChar(codePage uint32, dwFlags uint32, str *byte, nstr int32, wchar *uint16, nwchar int32) (nwrite int32, err error) = kernel32.MultiByteToWideChar
|
||
|
|
|
||
|
|
// For testing: clients can set this flag to force
|
||
|
|
// creation of IPv6 sockets to return EAFNOSUPPORT.
|
||
|
|
var SocketDisableIPv6 bool
|
||
|
|
|
||
|
|
type RawSockaddrInet4 struct {
|
||
|
|
Family uint16
|
||
|
|
Port uint16
|
||
|
|
Addr [4]byte /* in_addr */
|
||
|
|
Zero [8]uint8
|
||
|
|
}
|
||
|
|
|
||
|
|
type RawSockaddrInet6 struct {
|
||
|
|
Family uint16
|
||
|
|
Port uint16
|
||
|
|
Flowinfo uint32
|
||
|
|
Addr [16]byte /* in6_addr */
|
||
|
|
Scope_id uint32
|
||
|
|
}
|
||
|
|
|
||
|
|
type RawSockaddr struct {
|
||
|
|
Family uint16
|
||
|
|
Data [14]int8
|
||
|
|
}
|
||
|
|
|
||
|
|
type RawSockaddrAny struct {
|
||
|
|
Addr RawSockaddr
|
||
|
|
Pad [100]int8
|
||
|
|
}
|
||
|
|
|
||
|
|
type Sockaddr interface {
|
||
|
|
sockaddr() (ptr unsafe.Pointer, len int32, err error) // lowercase; only we can define Sockaddrs
|
||
|
|
}
|
||
|
|
|
||
|
|
type SockaddrInet4 struct {
|
||
|
|
Port int
|
||
|
|
Addr [4]byte
|
||
|
|
raw RawSockaddrInet4
|
||
|
|
}
|
||
|
|
|
||
|
|
func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, int32, error) {
|
||
|
|
if sa.Port < 0 || sa.Port > 0xFFFF {
|
||
|
|
return nil, 0, syscall.EINVAL
|
||
|
|
}
|
||
|
|
sa.raw.Family = AF_INET
|
||
|
|
p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
|
||
|
|
p[0] = byte(sa.Port >> 8)
|
||
|
|
p[1] = byte(sa.Port)
|
||
|
|
for i := 0; i < len(sa.Addr); i++ {
|
||
|
|
sa.raw.Addr[i] = sa.Addr[i]
|
||
|
|
}
|
||
|
|
return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
type SockaddrInet6 struct {
|
||
|
|
Port int
|
||
|
|
ZoneId uint32
|
||
|
|
Addr [16]byte
|
||
|
|
raw RawSockaddrInet6
|
||
|
|
}
|
||
|
|
|
||
|
|
func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, int32, error) {
|
||
|
|
if sa.Port < 0 || sa.Port > 0xFFFF {
|
||
|
|
return nil, 0, syscall.EINVAL
|
||
|
|
}
|
||
|
|
sa.raw.Family = AF_INET6
|
||
|
|
p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
|
||
|
|
p[0] = byte(sa.Port >> 8)
|
||
|
|
p[1] = byte(sa.Port)
|
||
|
|
sa.raw.Scope_id = sa.ZoneId
|
||
|
|
for i := 0; i < len(sa.Addr); i++ {
|
||
|
|
sa.raw.Addr[i] = sa.Addr[i]
|
||
|
|
}
|
||
|
|
return unsafe.Pointer(&sa.raw), int32(unsafe.Sizeof(sa.raw)), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
type RawSockaddrUnix struct {
|
||
|
|
Family uint16
|
||
|
|
Path [UNIX_PATH_MAX]int8
|
||
|
|
}
|
||
|
|
|
||
|
|
type SockaddrUnix struct {
|
||
|
|
Name string
|
||
|
|
raw RawSockaddrUnix
|
||
|
|
}
|
||
|
|
|
||
|
|
func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) {
|
||
|
|
name := sa.Name
|
||
|
|
n := len(name)
|
||
|
|
if n > len(sa.raw.Path) {
|
||
|
|
return nil, 0, syscall.EINVAL
|
||
|
|
}
|
||
|
|
if n == len(sa.raw.Path) && name[0] != '@' {
|
||
|
|
return nil, 0, syscall.EINVAL
|
||
|
|
}
|
||
|
|
sa.raw.Family = AF_UNIX
|
||
|
|
for i := 0; i < n; i++ {
|
||
|
|
sa.raw.Path[i] = int8(name[i])
|
||
|
|
}
|
||
|
|
// length is family (uint16), name, NUL.
|
||
|
|
sl := int32(2)
|
||
|
|
if n > 0 {
|
||
|
|
sl += int32(n) + 1
|
||
|
|
}
|
||
|
|
if sa.raw.Path[0] == '@' {
|
||
|
|
sa.raw.Path[0] = 0
|
||
|
|
// Don't count trailing NUL for abstract address.
|
||
|
|
sl--
|
||
|
|
}
|
||
|
|
|
||
|
|
return unsafe.Pointer(&sa.raw), sl, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (rsa *RawSockaddrAny) Sockaddr() (Sockaddr, error) {
|
||
|
|
switch rsa.Addr.Family {
|
||
|
|
case AF_UNIX:
|
||
|
|
pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
|
||
|
|
sa := new(SockaddrUnix)
|
||
|
|
if pp.Path[0] == 0 {
|
||
|
|
// "Abstract" Unix domain socket.
|
||
|
|
// Rewrite leading NUL as @ for textual display.
|
||
|
|
// (This is the standard convention.)
|
||
|
|
// Not friendly to overwrite in place,
|
||
|
|
// but the callers below don't care.
|
||
|
|
pp.Path[0] = '@'
|
||
|
|
}
|
||
|
|
|
||
|
|
// Assume path ends at NUL.
|
||
|
|
// This is not technically the Linux semantics for
|
||
|
|
// abstract Unix domain sockets--they are supposed
|
||
|
|
// to be uninterpreted fixed-size binary blobs--but
|
||
|
|
// everyone uses this convention.
|
||
|
|
n := 0
|
||
|
|
for n < len(pp.Path) && pp.Path[n] != 0 {
|
||
|
|
n++
|
||
|
|
}
|
||
|
|
bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n]
|
||
|
|
sa.Name = string(bytes)
|
||
|
|
return sa, nil
|
||
|
|
|
||
|
|
case AF_INET:
|
||
|
|
pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
|
||
|
|
sa := new(SockaddrInet4)
|
||
|
|
p := (*[2]byte)(unsafe.Pointer(&pp.Port))
|
||
|
|
sa.Port = int(p[0])<<8 + int(p[1])
|
||
|
|
for i := 0; i < len(sa.Addr); i++ {
|
||
|
|
sa.Addr[i] = pp.Addr[i]
|
||
|
|
}
|
||
|
|
return sa, nil
|
||
|
|
|
||
|
|
case AF_INET6:
|
||
|
|
pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
|
||
|
|
sa := new(SockaddrInet6)
|
||
|
|
p := (*[2]byte)(unsafe.Pointer(&pp.Port))
|
||
|
|
sa.Port = int(p[0])<<8 + int(p[1])
|
||
|
|
sa.ZoneId = pp.Scope_id
|
||
|
|
for i := 0; i < len(sa.Addr); i++ {
|
||
|
|
sa.Addr[i] = pp.Addr[i]
|
||
|
|
}
|
||
|
|
return sa, nil
|
||
|
|
}
|
||
|
|
return nil, syscall.EAFNOSUPPORT
|
||
|
|
}
|
||
|
|
|
||
|
|
func Socket(domain, typ, proto int) (fd Handle, err error) {
|
||
|
|
if domain == AF_INET6 && SocketDisableIPv6 {
|
||
|
|
return InvalidHandle, syscall.EAFNOSUPPORT
|
||
|
|
}
|
||
|
|
return socket(int32(domain), int32(typ), int32(proto))
|
||
|
|
}
|
||
|
|
|
||
|
|
func SetsockoptInt(fd Handle, level, opt int, value int) (err error) {
|
||
|
|
v := int32(value)
|
||
|
|
return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&v)), int32(unsafe.Sizeof(v)))
|
||
|
|
}
|
||
|
|
|
||
|
|
func Bind(fd Handle, sa Sockaddr) (err error) {
|
||
|
|
ptr, n, err := sa.sockaddr()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return bind(fd, ptr, n)
|
||
|
|
}
|
||
|
|
|
||
|
|
func Connect(fd Handle, sa Sockaddr) (err error) {
|
||
|
|
ptr, n, err := sa.sockaddr()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return connect(fd, ptr, n)
|
||
|
|
}
|
||
|
|
|
||
|
|
func Getsockname(fd Handle) (sa Sockaddr, err error) {
|
||
|
|
var rsa RawSockaddrAny
|
||
|
|
l := int32(unsafe.Sizeof(rsa))
|
||
|
|
if err = getsockname(fd, &rsa, &l); err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
return rsa.Sockaddr()
|
||
|
|
}
|
||
|
|
|
||
|
|
func Getpeername(fd Handle) (sa Sockaddr, err error) {
|
||
|
|
var rsa RawSockaddrAny
|
||
|
|
l := int32(unsafe.Sizeof(rsa))
|
||
|
|
if err = getpeername(fd, &rsa, &l); err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
return rsa.Sockaddr()
|
||
|
|
}
|
||
|
|
|
||
|
|
func Listen(s Handle, n int) (err error) {
|
||
|
|
return listen(s, int32(n))
|
||
|
|
}
|
||
|
|
|
||
|
|
func Shutdown(fd Handle, how int) (err error) {
|
||
|
|
return shutdown(fd, int32(how))
|
||
|
|
}
|
||
|
|
|
||
|
|
func WSASendto(s Handle, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (err error) {
|
||
|
|
rsa, l, err := to.sockaddr()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return WSASendTo(s, bufs, bufcnt, sent, flags, (*RawSockaddrAny)(unsafe.Pointer(rsa)), l, overlapped, croutine)
|
||
|
|
}
|
||
|
|
|
||
|
|
func LoadGetAddrInfo() error {
|
||
|
|
return procGetAddrInfoW.Find()
|
||
|
|
}
|
||
|
|
|
||
|
|
var connectExFunc struct {
|
||
|
|
once sync.Once
|
||
|
|
addr uintptr
|
||
|
|
err error
|
||
|
|
}
|
||
|
|
|
||
|
|
func LoadConnectEx() error {
|
||
|
|
connectExFunc.once.Do(func() {
|
||
|
|
var s Handle
|
||
|
|
s, connectExFunc.err = Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
|
||
|
|
if connectExFunc.err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
defer CloseHandle(s)
|
||
|
|
var n uint32
|
||
|
|
connectExFunc.err = WSAIoctl(s,
|
||
|
|
SIO_GET_EXTENSION_FUNCTION_POINTER,
|
||
|
|
(*byte)(unsafe.Pointer(&WSAID_CONNECTEX)),
|
||
|
|
uint32(unsafe.Sizeof(WSAID_CONNECTEX)),
|
||
|
|
(*byte)(unsafe.Pointer(&connectExFunc.addr)),
|
||
|
|
uint32(unsafe.Sizeof(connectExFunc.addr)),
|
||
|
|
&n, nil, 0)
|
||
|
|
})
|
||
|
|
return connectExFunc.err
|
||
|
|
}
|
||
|
|
|
||
|
|
func connectEx(s Handle, name unsafe.Pointer, namelen int32, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) (err error) {
|
||
|
|
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)
|
||
|
|
if r1 == 0 {
|
||
|
|
if e1 != 0 {
|
||
|
|
err = error(e1)
|
||
|
|
} else {
|
||
|
|
err = syscall.EINVAL
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
func ConnectEx(fd Handle, sa Sockaddr, sendBuf *byte, sendDataLen uint32, bytesSent *uint32, overlapped *Overlapped) error {
|
||
|
|
err := LoadConnectEx()
|
||
|
|
if err != nil {
|
||
|
|
return errorspkg.New("failed to find ConnectEx: " + err.Error())
|
||
|
|
}
|
||
|
|
ptr, n, err := sa.sockaddr()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return connectEx(fd, ptr, n, sendBuf, sendDataLen, bytesSent, overlapped)
|
||
|
|
}
|
||
|
|
|
||
|
|
var sendRecvMsgFunc struct {
|
||
|
|
once sync.Once
|
||
|
|
sendAddr uintptr
|
||
|
|
recvAddr uintptr
|
||
|
|
err error
|
||
|
|
}
|
||
|
|
|
||
|
|
func loadWSASendRecvMsg() error {
|
||
|
|
sendRecvMsgFunc.once.Do(func() {
|
||
|
|
var s Handle
|
||
|
|
s, sendRecvMsgFunc.err = Socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)
|
||
|
|
if sendRecvMsgFunc.err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
defer CloseHandle(s)
|
||
|
|
var n uint32
|
||
|
|
sendRecvMsgFunc.err = WSAIoctl(s,
|
||
|
|
SIO_GET_EXTENSION_FUNCTION_POINTER,
|
||
|
|
(*byte)(unsafe.Pointer(&WSAID_WSARECVMSG)),
|
||
|
|
uint32(unsafe.Sizeof(WSAID_WSARECVMSG)),
|
||
|
|
(*byte)(unsafe.Pointer(&sendRecvMsgFunc.recvAddr)),
|
||
|
|
uint32(unsafe.Sizeof(sendRecvMsgFunc.recvAddr)),
|
||
|
|
&n, nil, 0)
|
||
|
|
if sendRecvMsgFunc.err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
sendRecvMsgFunc.err = WSAIoctl(s,
|
||
|
|
SIO_GET_EXTENSION_FUNCTION_POINTER,
|
||
|
|
(*byte)(unsafe.Pointer(&WSAID_WSASENDMSG)),
|
||
|
|
uint32(unsafe.Sizeof(WSAID_WSASENDMSG)),
|
||
|
|
(*byte)(unsafe.Pointer(&sendRecvMsgFunc.sendAddr)),
|
||
|
|
uint32(unsafe.Sizeof(sendRecvMsgFunc.sendAddr)),
|
||
|
|
&n, nil, 0)
|
||
|
|
})
|
||
|
|
return sendRecvMsgFunc.err
|
||
|
|
}
|
||
|
|
|
||
|
|
func WSASendMsg(fd Handle, msg *WSAMsg, flags uint32, bytesSent *uint32, overlapped *Overlapped, croutine *byte) error {
|
||
|
|
err := loadWSASendRecvMsg()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
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)))
|
||
|
|
if r1 == socket_error {
|
||
|
|
if e1 != 0 {
|
||
|
|
err = errnoErr(e1)
|
||
|
|
} else {
|
||
|
|
err = syscall.EINVAL
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
func WSARecvMsg(fd Handle, msg *WSAMsg, bytesReceived *uint32, overlapped *Overlapped, croutine *byte) error {
|
||
|
|
err := loadWSASendRecvMsg()
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
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)
|
||
|
|
if r1 == socket_error {
|
||
|
|
if e1 != 0 {
|
||
|
|
err = errnoErr(e1)
|
||
|
|
} else {
|
||
|
|
err = syscall.EINVAL
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
// Invented structures to support what package os expects.
|
||
|
|
type Rusage struct {
|
||
|
|
CreationTime Filetime
|
||
|
|
ExitTime Filetime
|
||
|
|
KernelTime Filetime
|
||
|
|
UserTime Filetime
|
||
|
|
}
|
||
|
|
|
||
|
|
type WaitStatus struct {
|
||
|
|
ExitCode uint32
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w WaitStatus) Exited() bool { return true }
|
||
|
|
|
||
|
|
func (w WaitStatus) ExitStatus() int { return int(w.ExitCode) }
|
||
|
|
|
||
|
|
func (w WaitStatus) Signal() Signal { return -1 }
|
||
|
|
|
||
|
|
func (w WaitStatus) CoreDump() bool { return false }
|
||
|
|
|
||
|
|
func (w WaitStatus) Stopped() bool { return false }
|
||
|
|
|
||
|
|
func (w WaitStatus) Continued() bool { return false }
|
||
|
|
|
||
|
|
func (w WaitStatus) StopSignal() Signal { return -1 }
|
||
|
|
|
||
|
|
func (w WaitStatus) Signaled() bool { return false }
|
||
|
|
|
||
|
|
func (w WaitStatus) TrapCause() int { return -1 }
|
||
|
|
|
||
|
|
// Timespec is an invented structure on Windows, but here for
|
||
|
|
// consistency with the corresponding package for other operating systems.
|
||
|
|
type Timespec struct {
|
||
|
|
Sec int64
|
||
|
|
Nsec int64
|
||
|
|
}
|
||
|
|
|
||
|
|
func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
|
||
|
|
|
||
|
|
func NsecToTimespec(nsec int64) (ts Timespec) {
|
||
|
|
ts.Sec = nsec / 1e9
|
||
|
|
ts.Nsec = nsec % 1e9
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO(brainman): fix all needed for net
|
||
|
|
|
||
|
|
func Accept(fd Handle) (nfd Handle, sa Sockaddr, err error) { return 0, nil, syscall.EWINDOWS }
|
||
|
|
func Recvfrom(fd Handle, p []byte, flags int) (n int, from Sockaddr, err error) {
|
||
|
|
return 0, nil, syscall.EWINDOWS
|
||
|
|
}
|
||
|
|
func Sendto(fd Handle, p []byte, flags int, to Sockaddr) (err error) { return syscall.EWINDOWS }
|
||
|
|
func SetsockoptTimeval(fd Handle, level, opt int, tv *Timeval) (err error) { return syscall.EWINDOWS }
|
||
|
|
|
||
|
|
// The Linger struct is wrong but we only noticed after Go 1.
|
||
|
|
// sysLinger is the real system call structure.
|
||
|
|
|
||
|
|
// BUG(brainman): The definition of Linger is not appropriate for direct use
|
||
|
|
// with Setsockopt and Getsockopt.
|
||
|
|
// Use SetsockoptLinger instead.
|
||
|
|
|
||
|
|
type Linger struct {
|
||
|
|
Onoff int32
|
||
|
|
Linger int32
|
||
|
|
}
|
||
|
|
|
||
|
|
type sysLinger struct {
|
||
|
|
Onoff uint16
|
||
|
|
Linger uint16
|
||
|
|
}
|
||
|
|
|
||
|
|
type IPMreq struct {
|
||
|
|
Multiaddr [4]byte /* in_addr */
|
||
|
|
Interface [4]byte /* in_addr */
|
||
|
|
}
|
||
|
|
|
||
|
|
type IPv6Mreq struct {
|
||
|
|
Multiaddr [16]byte /* in6_addr */
|
||
|
|
Interface uint32
|
||
|
|
}
|
||
|
|
|
||
|
|
func GetsockoptInt(fd Handle, level, opt int) (int, error) { return -1, syscall.EWINDOWS }
|
||
|
|
|
||
|
|
func SetsockoptLinger(fd Handle, level, opt int, l *Linger) (err error) {
|
||
|
|
sys := sysLinger{Onoff: uint16(l.Onoff), Linger: uint16(l.Linger)}
|
||
|
|
return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&sys)), int32(unsafe.Sizeof(sys)))
|
||
|
|
}
|
||
|
|
|
||
|
|
func SetsockoptInet4Addr(fd Handle, level, opt int, value [4]byte) (err error) {
|
||
|
|
return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(&value[0])), 4)
|
||
|
|
}
|
||
|
|
func SetsockoptIPMreq(fd Handle, level, opt int, mreq *IPMreq) (err error) {
|
||
|
|
return Setsockopt(fd, int32(level), int32(opt), (*byte)(unsafe.Pointer(mreq)), int32(unsafe.Sizeof(*mreq)))
|
||
|
|
}
|
||
|
|
func SetsockoptIPv6Mreq(fd Handle, level, opt int, mreq *IPv6Mreq) (err error) {
|
||
|
|
return syscall.EWINDOWS
|
||
|
|
}
|
||
|
|
|
||
|
|
func Getpid() (pid int) { return int(getCurrentProcessId()) }
|
||
|
|
|
||
|
|
func FindFirstFile(name *uint16, data *Win32finddata) (handle Handle, err error) {
|
||
|
|
// NOTE(rsc): The Win32finddata struct is wrong for the system call:
|
||
|
|
// the two paths are each one uint16 short. Use the correct struct,
|
||
|
|
// a win32finddata1, and then copy the results out.
|
||
|
|
// There is no loss of expressivity here, because the final
|
||
|
|
// uint16, if it is used, is supposed to be a NUL, and Go doesn't need that.
|
||
|
|
// For Go 1.1, we might avoid the allocation of win32finddata1 here
|
||
|
|
// by adding a final Bug [2]uint16 field to the struct and then
|
||
|
|
// adjusting the fields in the result directly.
|
||
|
|
var data1 win32finddata1
|
||
|
|
handle, err = findFirstFile1(name, &data1)
|
||
|
|
if err == nil {
|
||
|
|
copyFindData(data, &data1)
|
||
|
|
}
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
func FindNextFile(handle Handle, data *Win32finddata) (err error) {
|
||
|
|
var data1 win32finddata1
|
||
|
|
err = findNextFile1(handle, &data1)
|
||
|
|
if err == nil {
|
||
|
|
copyFindData(data, &data1)
|
||
|
|
}
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
func getProcessEntry(pid int) (*ProcessEntry32, error) {
|
||
|
|
snapshot, err := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
defer CloseHandle(snapshot)
|
||
|
|
var procEntry ProcessEntry32
|
||
|
|
procEntry.Size = uint32(unsafe.Sizeof(procEntry))
|
||
|
|
if err = Process32First(snapshot, &procEntry); err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
for {
|
||
|
|
if procEntry.ProcessID == uint32(pid) {
|
||
|
|
return &procEntry, nil
|
||
|
|
}
|
||
|
|
err = Process32Next(snapshot, &procEntry)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func Getppid() (ppid int) {
|
||
|
|
pe, err := getProcessEntry(Getpid())
|
||
|
|
if err != nil {
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
return int(pe.ParentProcessID)
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO(brainman): fix all needed for os
|
||
|
|
func Fchdir(fd Handle) (err error) { return syscall.EWINDOWS }
|
||
|
|
func Link(oldpath, newpath string) (err error) { return syscall.EWINDOWS }
|
||
|
|
func Symlink(path, link string) (err error) { return syscall.EWINDOWS }
|
||
|
|
|
||
|
|
func Fchmod(fd Handle, mode uint32) (err error) { return syscall.EWINDOWS }
|
||
|
|
func Chown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS }
|
||
|
|
func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS }
|
||
|
|
func Fchown(fd Handle, uid int, gid int) (err error) { return syscall.EWINDOWS }
|
||
|
|
|
||
|
|
func Getuid() (uid int) { return -1 }
|
||
|
|
func Geteuid() (euid int) { return -1 }
|
||
|
|
func Getgid() (gid int) { return -1 }
|
||
|
|
func Getegid() (egid int) { return -1 }
|
||
|
|
func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS }
|
||
|
|
|
||
|
|
type Signal int
|
||
|
|
|
||
|
|
func (s Signal) Signal() {}
|
||
|
|
|
||
|
|
func (s Signal) String() string {
|
||
|
|
if 0 <= s && int(s) < len(signals) {
|
||
|
|
str := signals[s]
|
||
|
|
if str != "" {
|
||
|
|
return str
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return "signal " + itoa(int(s))
|
||
|
|
}
|
||
|
|
|
||
|
|
func LoadCreateSymbolicLink() error {
|
||
|
|
return procCreateSymbolicLinkW.Find()
|
||
|
|
}
|
||
|
|
|
||
|
|
// Readlink returns the destination of the named symbolic link.
|
||
|
|
func Readlink(path string, buf []byte) (n int, err error) {
|
||
|
|
fd, err := CreateFile(StringToUTF16Ptr(path), GENERIC_READ, 0, nil, OPEN_EXISTING,
|
||
|
|
FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0)
|
||
|
|
if err != nil {
|
||
|
|
return -1, err
|
||
|
|
}
|
||
|
|
defer CloseHandle(fd)
|
||
|
|
|
||
|
|
rdbbuf := make([]byte, MAXIMUM_REPARSE_DATA_BUFFER_SIZE)
|
||
|
|
var bytesReturned uint32
|
||
|
|
err = DeviceIoControl(fd, FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil)
|
||
|
|
if err != nil {
|
||
|
|
return -1, err
|
||
|
|
}
|
||
|
|
|
||
|
|
rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0]))
|
||
|
|
var s string
|
||
|
|
switch rdb.ReparseTag {
|
||
|
|
case IO_REPARSE_TAG_SYMLINK:
|
||
|
|
data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer))
|
||
|
|
p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0]))
|
||
|
|
s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2])
|
||
|
|
case IO_REPARSE_TAG_MOUNT_POINT:
|
||
|
|
data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer))
|
||
|
|
p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0]))
|
||
|
|
s = UTF16ToString(p[data.PrintNameOffset/2 : (data.PrintNameLength-data.PrintNameOffset)/2])
|
||
|
|
default:
|
||
|
|
// the path is not a symlink or junction but another type of reparse
|
||
|
|
// point
|
||
|
|
return -1, syscall.ENOENT
|
||
|
|
}
|
||
|
|
n = copy(buf, []byte(s))
|
||
|
|
|
||
|
|
return n, nil
|
||
|
|
}
|