TPMCmd/tpm/src/command/PCR/PCR_Allocate.c

/* Microsoft Reference Implementation for TPM 2.0
 *
 *  The copyright in this software is being made available under the BSD License,
 *  included below. This software may be subject to other third party and
 *  contributor rights, including patent rights, and no such rights are granted
 *  under this license.
 *
 *  Copyright (c) Microsoft Corporation
 *
 *  All rights reserved.
 *
 *  BSD License
 *
 *  Redistribution and use in source and binary forms, with or without modification,
 *  are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice, this list
 *  of conditions and the following disclaimer.
 *
 *  Redistributions in binary form must reproduce the above copyright notice, this
 *  list of conditions and the following disclaimer in the documentation and/or
 *  other materials provided with the distribution.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 *  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "Tpm.h"
#include "PCR_Allocate_fp.h"

#if CC_PCR_Allocate  // Conditional expansion of this file

/*(See part 3 specification)
// Allocate PCR banks
*/
//  Return Type: TPM_RC
//      TPM_RC_PCR              the allocation did not have required PCR
//      TPM_RC_NV_UNAVAILABLE   NV is not accessible
//      TPM_RC_NV_RATE          NV is in a rate-limiting mode
TPM_RC
TPM2_PCR_Allocate(
    PCR_Allocate_In     *in,            // IN: input parameter list
    PCR_Allocate_Out    *out            // OUT: output parameter list
    )
{
    TPM_RC      result;

    // The command needs NV update.  Check if NV is available.
    // A TPM_RC_NV_UNAVAILABLE or TPM_RC_NV_RATE error may be returned at
    // this point.
    // Note: These codes are not listed in the return values above because it is
    // an implementation choice to check in this routine rather than in a common
    // function that is called before these actions are called. These return values
    // are described in the Response Code section of Part 3.
    RETURN_IF_NV_IS_NOT_AVAILABLE;

// Command Output

    // Call PCR Allocation function.
    result = PCRAllocate(&in->pcrAllocation, &out->maxPCR,
                         &out->sizeNeeded, &out->sizeAvailable);
    if(result == TPM_RC_PCR)
        return result;

    //
    out->allocationSuccess = (result == TPM_RC_SUCCESS);

    // if re-configuration succeeds, set the flag to indicate PCR configuration is
    // going to be changed in next boot
    if(out->allocationSuccess == YES)
        g_pcrReConfig = TRUE;

    return TPM_RC_SUCCESS;
}

#endif // CC_PCR_Allocate