我正在尝试在我的 .NET 4 C# 应用程序中获得特权。此代码有效并成功获得特权，但仅限于 64 位系统。当相同的代码在 32 位系统上运行时，代码在 AdjustTokenPrivileges 处失败，并出现以下异常：
对内存位置的无效访问。（来自 HRESULT 的异常：0x800703E6）
我试过修改代码来解决这个问题，但没有任何效果，我很困惑。
关于为什么在 32 位系统上失败的任何想法？它在 Windows Vista 和 7 32 位上都失败了，所以这是一个 32 位特定的问题。
方法：
public static void EnableDisablePrivilege(string PrivilegeName, bool EnableDisable)
{
var htok = IntPtr.Zero;
if (!OpenProcessToken(Process.GetCurrentProcess().Handle, TokenAccessLevels.AdjustPrivileges | TokenAccessLevels.Query, out htok))
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
return;
}
var tkp = new TOKEN_PRIVILEGES { PrivilegeCount = 1, Privileges = new LUID_AND_ATTRIBUTES[1] };
LUID luid;
if (!LookupPrivilegeValue(null, PrivilegeName, out luid))
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
return;
}
tkp.Privileges[0].LUID = luid;
tkp.Privileges[0].Attributes = (uint)(EnableDisable ? 2 : 0);
TOKEN_PRIVILEGES prv;
uint rb;
if (!AdjustTokenPrivileges(htok, false, tkp, 256, out prv, out rb))
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
return;
}
}
执行：
EnableDisablePrivilege("SeManageVolumePrivilege", true);
PInvoke 声明：
[StructLayout(LayoutKind.Sequential)]
public struct LUID
{
private uint lp;
private int hp;
public uint LowPart
{
get { return lp; }
set { lp = value; }
}
public int HighPart
{
get { return hp; }
set { hp = value; }
}
}
[StructLayout(LayoutKind.Sequential)]
public struct LUID_AND_ATTRIBUTES
{
private LUID luid;
private uint attributes;
public LUID LUID
{
get { return luid; }
set { luid = value; }
}
public uint Attributes
{
get { return attributes; }
set { attributes = value; }
}
}
[StructLayout(LayoutKind.Sequential)]
public struct TOKEN_PRIVILEGES
{
private uint prvct;
[MarshalAs(UnmanagedType.SafeArray, SizeConst = 1)]
private LUID_AND_ATTRIBUTES[] privileges;
public uint PrivilegeCount
{
get { return prvct; }
set { prvct = value; }
}
public LUID_AND_ATTRIBUTES[] Privileges
{
get { return privileges; }
set { privileges = value; }
}
}
[DllImport("advapi32", SetLastError = true)]
public static extern bool OpenProcessToken(IntPtr ProcessHandle, TokenAccessLevels DesiredAccess, out IntPtr TokenHandle);
[DllImport("advapi32.dll", SetLastError = true)]
public static extern bool AdjustTokenPrivileges(IntPtr TokenHandle, bool DisableAllPrivileges, TOKEN_PRIVILEGES NewState, uint BufferLength, out TOKEN_PRIVILEGES PreviousState, out uint ReturnLength);
[DllImport("advapi32.dll", SetLastError = true)]
public static extern bool LookupPrivilegeValue(string lpSystemName, string lpName, out LUID lpLuid);