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tst: passthrough-dotnet: EnableBackupRestorePrivileges

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This commit is contained in:
Bill Zissimopoulos 2017-04-11 16:46:11 -07:00
parent f9a470a0f0
commit 739eb80cfb
1 changed files with 51 additions and 21 deletions
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70
tst/passthrough-dotnet/Program.cs
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@ -771,7 +771,7 @@ namespace passthrough
if (null == PassThrough || null == MountPoint) if (null == PassThrough || null == MountPoint)
throw new CommandLineUsageException(); throw new CommandLineUsageException();
//EnableBackupRestorePrivileges(); EnableBackupRestorePrivileges();
if (null != DebugLogFile) if (null != DebugLogFile)
if (0 > FileSystem.SetDebugLogFile(DebugLogFile)) if (0 > FileSystem.SetDebugLogFile(DebugLogFile))
@ -840,43 +840,73 @@ namespace passthrough
throw new CommandLineUsageException(); throw new CommandLineUsageException();
} }
#if false
/* /*
* Turns out there is no managed way to adjust privileges. * Turns out there is no managed way to adjust privileges.
* So we have to write our own using P/Invoke. Joy! * So we have to write our own using P/Invoke. Joy!
*
* NOTE: The P/Invoke definitions below are not for general use.
*/ */
static NTSTATUS EnableBackupRestorePrivileges(VOID) private struct LUID_AND_ATTRIBUTES
{ {
union public UInt64 Luid;
public UInt32 Attributes;
}
[StructLayout(LayoutKind.Sequential)]
private struct TOKEN_PRIVILEGES
{ {
TOKEN_PRIVILEGES P; public UInt32 PrivilegeCount;
UINT8 B[sizeof(TOKEN_PRIVILEGES) + sizeof(LUID_AND_ATTRIBUTES)]; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)] public LUID_AND_ATTRIBUTES[] Privileges;
} Privileges; }
HANDLE Token; [DllImport("advapi32.dll", SetLastError = true)]
private static extern Boolean OpenProcessToken(
IntPtr ProcessHandle,
UInt32 DesiredAccess,
out IntPtr TokenHandle);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern Boolean CloseHandle(
IntPtr hObject);
[DllImport("advapi32.dll", SetLastError = true)]
private static extern Boolean LookupPrivilegeValueW(
[MarshalAs(UnmanagedType.LPWStr)] String lpSystemName,
[MarshalAs(UnmanagedType.LPWStr)] String lpName,
out UInt64 lpLuid);
[DllImport("advapi32.dll", SetLastError = true)]
private static extern Boolean AdjustTokenPrivileges(
IntPtr TokenHandle,
Boolean DisableAllPrivileges,
ref TOKEN_PRIVILEGES NewState,
UInt32 BufferLength,
IntPtr PreviousState,
IntPtr ReturnLength);
private static Int32 EnableBackupRestorePrivileges()
{
TOKEN_PRIVILEGES Privileges;
IntPtr Token;
Privileges.P.PrivilegeCount = 2; Privileges = default(TOKEN_PRIVILEGES);
Privileges.P.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; Privileges.PrivilegeCount = 2;
Privileges.P.Privileges[1].Attributes = SE_PRIVILEGE_ENABLED; Privileges.Privileges = new LUID_AND_ATTRIBUTES[2];
Privileges.Privileges[0].Attributes = 2/*SE_PRIVILEGE_ENABLED*/;
Privileges.Privileges[1].Attributes = 2/*SE_PRIVILEGE_ENABLED*/;
if (!LookupPrivilegeValueW(0, SE_BACKUP_NAME, &Privileges.P.Privileges[0].Luid) || if (!LookupPrivilegeValueW(null, "SeBackupPrivilege", out Privileges.Privileges[0].Luid) ||
!LookupPrivilegeValueW(0, SE_RESTORE_NAME, &Privileges.P.Privileges[1].Luid)) !LookupPrivilegeValueW(null, "SeRestorePrivilege", out Privileges.Privileges[1].Luid))
return NtStatusFromWin32(GetLastError()); return Marshal.GetLastWin32Error();
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &Token)) if (!OpenProcessToken((IntPtr)(-1), 0x0020/*TOKEN_ADJUST_PRIVILEGES*/, out Token))
return NtStatusFromWin32(GetLastError()); return Marshal.GetLastWin32Error();
if (!AdjustTokenPrivileges(Token, FALSE, &Privileges.P, 0, 0, 0)) if (!AdjustTokenPrivileges(Token, false, ref Privileges, 0, IntPtr.Zero, IntPtr.Zero))
{ {
CloseHandle(Token); CloseHandle(Token);
return NtStatusFromWin32(GetLastError()); return Marshal.GetLastWin32Error();
} }
CloseHandle(Token); CloseHandle(Token);
return STATUS_SUCCESS; return 0;
} }
#endif
private Ptfs _Ptfs; private Ptfs _Ptfs;
} }