1 /* Microsoft Reference Implementation for TPM 2.0
2 *
3 * The copyright in this software is being made available under the BSD License,
4 * included below. This software may be subject to other third party and
5 * contributor rights, including patent rights, and no such rights are granted
6 * under this license.
7 *
8 * Copyright (c) Microsoft Corporation
9 *
10 * All rights reserved.
11 *
12 * BSD License
13 *
14 * Redistribution and use in source and binary forms, with or without modification,
15 * are permitted provided that the following conditions are met:
16 *
17 * Redistributions of source code must retain the above copyright notice, this list
18 * of conditions and the following disclaimer.
19 *
20 * Redistributions in binary form must reproduce the above copyright notice, this
21 * list of conditions and the following disclaimer in the documentation and/or
22 * other materials provided with the distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
28 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
31 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35 #include "Tpm.h"
36 #include "NV_UndefineSpace_fp.h"
37
38 #if CC_NV_UndefineSpace // Conditional expansion of this file
39
40 /*(See part 3 specification)
41 // Delete an NV Index
42 */
43 // Return Type: TPM_RC
44 // TPM_RC_ATTRIBUTES TPMA_NV_POLICY_DELETE is SET in the Index
45 // referenced by 'nvIndex' so this command may
46 // not be used to delete this Index (see
47 // TPM2_NV_UndefineSpaceSpecial())
48 // TPM_RC_NV_AUTHORIZATION attempt to use ownerAuth to delete an index
49 // created by the platform
50 //
51 TPM_RC
TPM2_NV_UndefineSpace(NV_UndefineSpace_In * in)52 TPM2_NV_UndefineSpace(
53 NV_UndefineSpace_In *in // IN: input parameter list
54 )
55 {
56 NV_REF locator;
57 NV_INDEX *nvIndex = NvGetIndexInfo(in->nvIndex, &locator);
58
59 // Input Validation
60 // This command can't be used to delete an index with TPMA_NV_POLICY_DELETE SET
61 if(IS_ATTRIBUTE(nvIndex->publicArea.attributes, TPMA_NV, POLICY_DELETE))
62 return TPM_RCS_ATTRIBUTES + RC_NV_UndefineSpace_nvIndex;
63
64 // The owner may only delete an index that was defined with ownerAuth. The
65 // platform may delete an index that was created with either authorization.
66 if(in->authHandle == TPM_RH_OWNER
67 && IS_ATTRIBUTE(nvIndex->publicArea.attributes, TPMA_NV, PLATFORMCREATE))
68 return TPM_RC_NV_AUTHORIZATION;
69
70 // Internal Data Update
71
72 // Call implementation dependent internal routine to delete NV index
73 return NvDeleteIndex(nvIndex, locator);
74 }
75
76 #endif // CC_NV_UndefineSpace