public static extern bool AdjustTokenPrivileges(
IntPtr tokenHandle,
[MarshalAs(UnmanagedType.Bool)]bool disableAllPrivileges,
ref TokenPrivileges newState,
UInt32 pOldStateMaxLength,
IntPtr pOldState,
IntPtr pOldStateLength
);
public static void AdjustProcessPrivilege(int processId, string privilegeName, bool privilegeStatus)
{
UInt64 luid;
if (!LookupPrivilegeValue(null, privilegeName, out luid)) {
var error = GetLastError();
throw new Exception(String.Format("LookupPrivilegeValue failed: Error {0:x8}", error));
}
using (var handle = OpenProcessHandle(ProcessAccessFlags.QueryInformation, false, processId)) {
IntPtr token;
if (!OpenProcessToken(handle.DangerousGetHandle(), TokenAccessLevels.AdjustPrivileges | TokenAccessLevels.Query, out token)) {
var error = GetLastError();
throw new Exception(String.Format("OpenProcessToken failed: Error {0:x8}", error));
}
try {
var newState = new TokenPrivileges {
PrivilegeCount = 1,
Luid = luid,
Attributes = privilegeStatus ? PrivilegeAttributes.Enabled : PrivilegeAttributes.Removed
};
if (!AdjustTokenPrivileges(token, false, ref newState, 0, IntPtr.Zero, IntPtr.Zero)) {
var error = GetLastError();
throw new Exception(String.Format("AdjustTokenPrivileges failed: Error {0:x8}", error));
}
} finally {
CloseHandle(token);
}
}
}
