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static class NativeMethods |
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{ |
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/// |
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|
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/// Reboot the computer |
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/// |
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|
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public static void Reboot() |
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{ |
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IntPtr tokenHandle = IntPtr.Zero; |
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|
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try |
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{ |
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// get process token |
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if (!OpenProcessToken(Process.GetCurrentProcess().Handle, |
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TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, |
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out tokenHandle)) |
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{ |
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throw new Win32Exception(Marshal.GetLastWin32Error(), |
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"Failed to open process token handle"); |
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} |
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// lookup the shutdown privilege |
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TOKEN_PRIVILEGES tokenPrivs = new TOKEN_PRIVILEGES(); |
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tokenPrivs.PrivilegeCount = 1; |
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tokenPrivs.Privileges = new LUID_AND_ATTRIBUTES[1]; |
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tokenPrivs.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; |
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|
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if (!LookupPrivilegeValue(null, |
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SE_SHUTDOWN_NAME, |
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out tokenPrivs.Privileges[0].Luid)) |
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{ |
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throw new Win32Exception(Marshal.GetLastWin32Error(), |
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"Failed to open lookup shutdown privilege"); |
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} |
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|
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// add the shutdown privilege to the process token |
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if (!AdjustTokenPrivileges(tokenHandle, |
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false, |
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ref tokenPrivs, |
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0, |
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IntPtr.Zero, |
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IntPtr.Zero)) |
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{ |
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throw new Win32Exception(Marshal.GetLastWin32Error(), |
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"Failed to adjust process token privileges"); |
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} |
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|
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// reboot |
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if (!ExitWindowsEx(ExitWindows.Reboot, |
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ShutdownReason.MajorApplication | |
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ShutdownReason.MinorInstallation | |
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ShutdownReason.FlagPlanned)) |
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{ |
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throw new Win32Exception(Marshal.GetLastWin32Error(), |
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"Failed to reboot system"); |
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} |
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} |
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finally |
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{ |
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// close the process token |
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if (tokenHandle != IntPtr.Zero) |
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{ |
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CloseHandle(tokenHandle); |
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} |
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} |
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} |
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// everything from here on is from pinvoke.net |
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[Flags] |
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private enum ExitWindows : uint |
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{ |
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// ONE of the following five: |
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LogOff = 0x00, |
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ShutDown = 0x01, |
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Reboot = 0x02, |
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PowerOff = 0x08, |
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RestartApps = 0x40, |
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// plus AT MOST ONE of the following two: |
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Force = 0x04, |
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ForceIfHung = 0x10, |
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} |
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[Flags] |
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private enum ShutdownReason : uint |
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{ |
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MajorApplication = 0x00040000, |
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MajorHardware = 0x00010000, |
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MajorLegacyApi = 0x00070000, |
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MajorOperatingSystem = 0x00020000, |
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MajorOther = 0x00000000, |
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MajorPower = 0x00060000, |
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MajorSoftware = 0x00030000, |
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MajorSystem = 0x00050000, |
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|
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MinorBlueScreen = 0x0000000F, |
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MinorCordUnplugged = 0x0000000b, |
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MinorDisk = 0x00000007, |
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MinorEnvironment = 0x0000000c, |
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MinorHardwareDriver = 0x0000000d, |
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MinorHotfix = 0x00000011, |
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MinorHung = 0x00000005, |
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MinorInstallation = 0x00000002, |
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MinorMaintenance = 0x00000001, |
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MinorMMC = 0x00000019, |
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MinorNetworkConnectivity = 0x00000014, |
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MinorNetworkCard = 0x00000009, |
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MinorOther = 0x00000000, |
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MinorOtherDriver = 0x0000000e, |
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MinorPowerSupply = 0x0000000a, |
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MinorProcessor = 0x00000008, |
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MinorReconfig = 0x00000004, |
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MinorSecurity = 0x00000013, |
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MinorSecurityFix = 0x00000012, |
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MinorSecurityFixUninstall = 0x00000018, |
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MinorServicePack = 0x00000010, |
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MinorServicePackUninstall = 0x00000016, |
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MinorTermSrv = 0x00000020, |
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MinorUnstable = 0x00000006, |
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MinorUpgrade = 0x00000003, |
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MinorWMI = 0x00000015, |
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|
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FlagUserDefined = 0x40000000, |
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FlagPlanned = 0x80000000 |
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} |
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|
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[StructLayout(LayoutKind.Sequential)] |
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private struct LUID |
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{ |
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public uint LowPart; |
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public int HighPart; |
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} |
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|
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[StructLayout(LayoutKind.Sequential)] |
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private struct LUID_AND_ATTRIBUTES |
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{ |
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public LUID Luid; |
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public UInt32 Attributes; |
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} |
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|
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private struct TOKEN_PRIVILEGES |
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{ |
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public UInt32 PrivilegeCount; |
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)] |
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public LUID_AND_ATTRIBUTES[] Privileges; |
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} |
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|
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private const UInt32 TOKEN_QUERY = 0x0008; |
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private const UInt32 TOKEN_ADJUST_PRIVILEGES = 0x0020; |
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private const UInt32 SE_PRIVILEGE_ENABLED = 0x00000002; |
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private const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege"; |
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|
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[DllImport("user32.dll", SetLastError = true)] |
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[return: MarshalAs(UnmanagedType.Bool)] |
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private static extern bool ExitWindowsEx(ExitWindows uFlags, |
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ShutdownReason dwReason); |
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|
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[DllImport("advapi32.dll", SetLastError = true)] |
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[return: MarshalAs(UnmanagedType.Bool)] |
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private static extern bool OpenProcessToken(IntPtr ProcessHandle, |
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UInt32 DesiredAccess, |
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out IntPtr TokenHandle); |
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|
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[DllImport("advapi32.dll", SetLastError = true, CharSet=CharSet.Unicode)] |
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[return: MarshalAs(UnmanagedType.Bool)] |
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private static extern bool LookupPrivilegeValue(string lpSystemName, |
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string lpName, |
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out LUID lpLuid); |
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|
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[DllImport("kernel32.dll", SetLastError = true)] |
|
[return: MarshalAs(UnmanagedType.Bool)] |
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private static extern bool CloseHandle(IntPtr hObject); |
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|
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[DllImport("advapi32.dll", SetLastError = true)] |
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[return: MarshalAs(UnmanagedType.Bool)] |
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private static extern bool AdjustTokenPrivileges(IntPtr TokenHandle, |
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[MarshalAs(UnmanagedType.Bool)]bool DisableAllPrivileges, |
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ref TOKEN_PRIVILEGES NewState, |
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UInt32 Zero, |
|
IntPtr Null1, |
|
IntPtr Null2); |
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} |
