mirror of
https://github.com/balena-os/balena-supervisor.git
synced 2024-12-28 01:28:52 +00:00
317 lines
8.2 KiB
Go
317 lines
8.2 KiB
Go
// Copyright 2010-2012 The W32 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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// +build windows
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package w32
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import (
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"syscall"
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"unsafe"
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)
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var (
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modkernel32 = syscall.NewLazyDLL("kernel32.dll")
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procGetModuleHandle = modkernel32.NewProc("GetModuleHandleW")
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procMulDiv = modkernel32.NewProc("MulDiv")
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procGetConsoleWindow = modkernel32.NewProc("GetConsoleWindow")
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procGetCurrentThread = modkernel32.NewProc("GetCurrentThread")
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procGetLogicalDrives = modkernel32.NewProc("GetLogicalDrives")
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procGetUserDefaultLCID = modkernel32.NewProc("GetUserDefaultLCID")
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procLstrlen = modkernel32.NewProc("lstrlenW")
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procLstrcpy = modkernel32.NewProc("lstrcpyW")
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procGlobalAlloc = modkernel32.NewProc("GlobalAlloc")
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procGlobalFree = modkernel32.NewProc("GlobalFree")
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procGlobalLock = modkernel32.NewProc("GlobalLock")
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procGlobalUnlock = modkernel32.NewProc("GlobalUnlock")
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procMoveMemory = modkernel32.NewProc("RtlMoveMemory")
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procFindResource = modkernel32.NewProc("FindResourceW")
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procSizeofResource = modkernel32.NewProc("SizeofResource")
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procLockResource = modkernel32.NewProc("LockResource")
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procLoadResource = modkernel32.NewProc("LoadResource")
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procGetLastError = modkernel32.NewProc("GetLastError")
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procOpenProcess = modkernel32.NewProc("OpenProcess")
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procTerminateProcess = modkernel32.NewProc("TerminateProcess")
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procCloseHandle = modkernel32.NewProc("CloseHandle")
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procCreateToolhelp32Snapshot = modkernel32.NewProc("CreateToolhelp32Snapshot")
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procModule32First = modkernel32.NewProc("Module32FirstW")
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procModule32Next = modkernel32.NewProc("Module32NextW")
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procProcess32First = modkernel32.NewProc("Process32FirstW")
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procProcess32Next = modkernel32.NewProc("Process32NextW")
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procGetSystemTimes = modkernel32.NewProc("GetSystemTimes")
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procGetConsoleScreenBufferInfo = modkernel32.NewProc("GetConsoleScreenBufferInfo")
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procSetConsoleTextAttribute = modkernel32.NewProc("SetConsoleTextAttribute")
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procGetDiskFreeSpaceEx = modkernel32.NewProc("GetDiskFreeSpaceExW")
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procGetProcessTimes = modkernel32.NewProc("GetProcessTimes")
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)
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func GetModuleHandle(modulename string) HINSTANCE {
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var mn uintptr
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if modulename == "" {
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mn = 0
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} else {
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mn = uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(modulename)))
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}
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ret, _, _ := procGetModuleHandle.Call(mn)
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return HINSTANCE(ret)
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}
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func MulDiv(number, numerator, denominator int) int {
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ret, _, _ := procMulDiv.Call(
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uintptr(number),
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uintptr(numerator),
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uintptr(denominator))
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return int(ret)
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}
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func GetConsoleWindow() HWND {
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ret, _, _ := procGetConsoleWindow.Call()
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return HWND(ret)
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}
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func GetCurrentThread() HANDLE {
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ret, _, _ := procGetCurrentThread.Call()
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return HANDLE(ret)
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}
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func GetLogicalDrives() uint32 {
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ret, _, _ := procGetLogicalDrives.Call()
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return uint32(ret)
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}
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func GetUserDefaultLCID() uint32 {
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ret, _, _ := procGetUserDefaultLCID.Call()
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return uint32(ret)
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}
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func Lstrlen(lpString *uint16) int {
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ret, _, _ := procLstrlen.Call(uintptr(unsafe.Pointer(lpString)))
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return int(ret)
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}
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func Lstrcpy(buf []uint16, lpString *uint16) {
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procLstrcpy.Call(
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uintptr(unsafe.Pointer(&buf[0])),
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uintptr(unsafe.Pointer(lpString)))
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}
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func GlobalAlloc(uFlags uint, dwBytes uint32) HGLOBAL {
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ret, _, _ := procGlobalAlloc.Call(
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uintptr(uFlags),
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uintptr(dwBytes))
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if ret == 0 {
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panic("GlobalAlloc failed")
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}
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return HGLOBAL(ret)
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}
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func GlobalFree(hMem HGLOBAL) {
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ret, _, _ := procGlobalFree.Call(uintptr(hMem))
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if ret != 0 {
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panic("GlobalFree failed")
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}
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}
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func GlobalLock(hMem HGLOBAL) unsafe.Pointer {
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ret, _, _ := procGlobalLock.Call(uintptr(hMem))
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if ret == 0 {
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panic("GlobalLock failed")
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}
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return unsafe.Pointer(ret)
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}
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func GlobalUnlock(hMem HGLOBAL) bool {
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ret, _, _ := procGlobalUnlock.Call(uintptr(hMem))
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return ret != 0
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}
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func MoveMemory(destination, source unsafe.Pointer, length uint32) {
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procMoveMemory.Call(
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uintptr(unsafe.Pointer(destination)),
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uintptr(source),
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uintptr(length))
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}
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func FindResource(hModule HMODULE, lpName, lpType *uint16) (HRSRC, error) {
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ret, _, _ := procFindResource.Call(
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uintptr(hModule),
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uintptr(unsafe.Pointer(lpName)),
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uintptr(unsafe.Pointer(lpType)))
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if ret == 0 {
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return 0, syscall.GetLastError()
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}
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return HRSRC(ret), nil
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}
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func SizeofResource(hModule HMODULE, hResInfo HRSRC) uint32 {
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ret, _, _ := procSizeofResource.Call(
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uintptr(hModule),
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uintptr(hResInfo))
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if ret == 0 {
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panic("SizeofResource failed")
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}
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return uint32(ret)
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}
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func LockResource(hResData HGLOBAL) unsafe.Pointer {
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ret, _, _ := procLockResource.Call(uintptr(hResData))
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if ret == 0 {
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panic("LockResource failed")
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}
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return unsafe.Pointer(ret)
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}
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func LoadResource(hModule HMODULE, hResInfo HRSRC) HGLOBAL {
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ret, _, _ := procLoadResource.Call(
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uintptr(hModule),
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uintptr(hResInfo))
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if ret == 0 {
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panic("LoadResource failed")
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}
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return HGLOBAL(ret)
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}
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func GetLastError() uint32 {
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ret, _, _ := procGetLastError.Call()
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return uint32(ret)
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}
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func OpenProcess(desiredAccess uint32, inheritHandle bool, processId uint32) HANDLE {
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inherit := 0
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if inheritHandle {
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inherit = 1
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}
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ret, _, _ := procOpenProcess.Call(
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uintptr(desiredAccess),
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uintptr(inherit),
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uintptr(processId))
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return HANDLE(ret)
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}
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func TerminateProcess(hProcess HANDLE, uExitCode uint) bool {
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ret, _, _ := procTerminateProcess.Call(
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uintptr(hProcess),
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uintptr(uExitCode))
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return ret != 0
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}
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func CloseHandle(object HANDLE) bool {
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ret, _, _ := procCloseHandle.Call(
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uintptr(object))
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return ret != 0
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}
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func CreateToolhelp32Snapshot(flags, processId uint32) HANDLE {
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ret, _, _ := procCreateToolhelp32Snapshot.Call(
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uintptr(flags),
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uintptr(processId))
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if ret <= 0 {
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return HANDLE(0)
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}
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return HANDLE(ret)
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}
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func Module32First(snapshot HANDLE, me *MODULEENTRY32) bool {
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ret, _, _ := procModule32First.Call(
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uintptr(snapshot),
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uintptr(unsafe.Pointer(me)))
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return ret != 0
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}
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func Module32Next(snapshot HANDLE, me *MODULEENTRY32) bool {
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ret, _, _ := procModule32Next.Call(
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uintptr(snapshot),
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uintptr(unsafe.Pointer(me)))
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return ret != 0
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}
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func Process32First(snapshot HANDLE, pe *PROCESSENTRY32) bool {
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ret, _, _ := procProcess32First.Call(
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uintptr(snapshot),
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uintptr(unsafe.Pointer(pe)))
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return ret != 0
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}
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func Process32Next(snapshot HANDLE, pe *PROCESSENTRY32) bool {
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ret, _, _ := procProcess32Next.Call(
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uintptr(snapshot),
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uintptr(unsafe.Pointer(pe)))
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return ret != 0
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}
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func GetSystemTimes(lpIdleTime, lpKernelTime, lpUserTime *FILETIME) bool {
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ret, _, _ := procGetSystemTimes.Call(
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uintptr(unsafe.Pointer(lpIdleTime)),
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uintptr(unsafe.Pointer(lpKernelTime)),
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uintptr(unsafe.Pointer(lpUserTime)))
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return ret != 0
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}
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func GetProcessTimes(hProcess HANDLE, lpCreationTime, lpExitTime, lpKernelTime, lpUserTime *FILETIME) bool {
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ret, _, _ := procGetProcessTimes.Call(
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uintptr(hProcess),
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uintptr(unsafe.Pointer(lpCreationTime)),
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uintptr(unsafe.Pointer(lpExitTime)),
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uintptr(unsafe.Pointer(lpKernelTime)),
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uintptr(unsafe.Pointer(lpUserTime)))
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return ret != 0
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}
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func GetConsoleScreenBufferInfo(hConsoleOutput HANDLE) *CONSOLE_SCREEN_BUFFER_INFO {
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var csbi CONSOLE_SCREEN_BUFFER_INFO
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ret, _, _ := procGetConsoleScreenBufferInfo.Call(
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uintptr(hConsoleOutput),
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uintptr(unsafe.Pointer(&csbi)))
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if ret == 0 {
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return nil
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}
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return &csbi
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}
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func SetConsoleTextAttribute(hConsoleOutput HANDLE, wAttributes uint16) bool {
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ret, _, _ := procSetConsoleTextAttribute.Call(
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uintptr(hConsoleOutput),
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uintptr(wAttributes))
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return ret != 0
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}
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func GetDiskFreeSpaceEx(dirName string) (r bool,
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freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes uint64) {
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ret, _, _ := procGetDiskFreeSpaceEx.Call(
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uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(dirName))),
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uintptr(unsafe.Pointer(&freeBytesAvailable)),
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uintptr(unsafe.Pointer(&totalNumberOfBytes)),
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uintptr(unsafe.Pointer(&totalNumberOfFreeBytes)))
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return ret != 0,
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freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes
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}
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