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https://github.com/xen-project/xen.git
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kfraser@localhost.localdomain
39a368aba9
socket for HVM guests. Signed-off-by: Vinnie Scarlata <vincent.r.scarlata@intel.com>
267 lines
8.0 KiB
C
267 lines
8.0 KiB
C
// ===================================================================
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//
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// Copyright (c) 2005, Intel Corp.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Intel Corporation nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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// OF THE POSSIBILITY OF SUCH DAMAGE.
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// ===================================================================
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//
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// dmictl.c
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//
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// Functions for creating and destroying DMIs
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//
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// ==================================================================
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include "vtpmpriv.h"
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#include "bsg.h"
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#include "buffer.h"
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#include "log.h"
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#include "hashtable.h"
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#include "hashtable_itr.h"
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#include "vtpm_ipc.h"
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#define TPM_EMULATOR_PATH "/usr/bin/vtpmd"
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// if dmi_res is non-null, then return a pointer to new object.
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// Also, this does not fill in the measurements. They should be filled by
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// design dependent code or saveNVM
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TPM_RESULT init_dmi(UINT32 dmi_id, BYTE dmi_type, VTPM_DMI_RESOURCE **dmi_res) {
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TPM_RESULT status=TPM_SUCCESS;
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VTPM_DMI_RESOURCE *new_dmi=NULL;
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UINT32 *dmi_id_key=NULL;
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if ((new_dmi = (VTPM_DMI_RESOURCE *) malloc (sizeof(VTPM_DMI_RESOURCE))) == NULL) {
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status = TPM_RESOURCES;
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goto abort_egress;
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}
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memset(new_dmi, 0, sizeof(VTPM_DMI_RESOURCE));
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new_dmi->dmi_id = dmi_id;
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new_dmi->dmi_type = dmi_type;
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new_dmi->connected = FALSE;
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new_dmi->TCSContext = 0;
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new_dmi->NVMLocation = (char *) malloc(11 + strlen(DMI_NVM_FILE));
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sprintf(new_dmi->NVMLocation, DMI_NVM_FILE, (uint32_t) new_dmi->dmi_id);
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if ((dmi_id_key = (UINT32 *) malloc (sizeof(UINT32))) == NULL) {
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status = TPM_RESOURCES;
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goto abort_egress;
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}
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*dmi_id_key = new_dmi->dmi_id;
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// install into map
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if (!hashtable_insert(vtpm_globals->dmi_map, dmi_id_key, new_dmi)){
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vtpmlogerror(VTPM_LOG_VTPM, "Failed to insert instance into table. Aborting.\n", dmi_id);
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status = TPM_FAIL;
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goto abort_egress;
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}
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if (dmi_res)
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*dmi_res = new_dmi;
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goto egress;
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abort_egress:
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if (new_dmi) {
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free(new_dmi->NVMLocation);
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free(new_dmi);
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}
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free(dmi_id_key);
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egress:
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return status;
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}
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TPM_RESULT close_dmi(VTPM_DMI_RESOURCE *dmi_res) {
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if (dmi_res == NULL)
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return TPM_SUCCESS;
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if (dmi_res->dmi_id == VTPM_CTL_DM)
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return(TPM_BAD_PARAMETER);
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TCS_CloseContext(dmi_res->TCSContext);
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dmi_res->connected = FALSE;
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vtpm_globals->connected_dmis--;
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return (VTPM_Close_DMI_Extra(dmi_res) );
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}
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TPM_RESULT VTPM_Handle_New_DMI(const buffer_t *param_buf) {
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VTPM_DMI_RESOURCE *new_dmi=NULL;
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TPM_RESULT status=TPM_FAIL;
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BYTE dmi_type, vm_type, startup_mode;
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UINT32 dmi_id;
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if (param_buf == NULL) { // Assume creation of Dom 0 control
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dmi_type = VTPM_TYPE_NON_MIGRATABLE;
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dmi_id = VTPM_CTL_DM;
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} else if (buffer_len(param_buf) != sizeof(BYTE) * 3 + sizeof(UINT32)) {
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vtpmloginfo(VTPM_LOG_VTPM, "New DMI command wrong length: %d.\n", buffer_len(param_buf));
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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} else {
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vtpm_globals->connected_dmis++; // Put this here so we don't count Dom0
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BSG_UnpackList( param_buf->bytes, 4,
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BSG_TYPE_BYTE, &dmi_type,
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BSG_TYPE_BYTE, &startup_mode,
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BSG_TYPE_BYTE, &vm_type,
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BSG_TYPE_UINT32, &dmi_id);
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}
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if ((dmi_type != VTPM_TYPE_NON_MIGRATABLE) && (dmi_type != VTPM_TYPE_MIGRATABLE)) {
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vtpmlogerror(VTPM_LOG_VTPM, "Creation of VTPM with illegal type.\n");
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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}
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new_dmi = (VTPM_DMI_RESOURCE *) hashtable_search(vtpm_globals->dmi_map, &dmi_id);
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if (new_dmi == NULL) {
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vtpmloginfo(VTPM_LOG_VTPM, "Creating new DMI instance %d attached.\n", dmi_id );
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// Brand New DMI. Initialize the persistent pieces
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TPMTRYRETURN(init_dmi(dmi_id, dmi_type, &new_dmi) );
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} else
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vtpmloginfo(VTPM_LOG_VTPM, "Re-attaching DMI instance %d.\n", dmi_id);
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if (new_dmi->connected) {
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vtpmlogerror(VTPM_LOG_VTPM, "Attempt to re-attach, currently attached instance %d. Ignoring\n", dmi_id);
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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}
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if (new_dmi->dmi_type == VTPM_TYPE_MIGRATED) {
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vtpmlogerror(VTPM_LOG_VTPM, "Attempt to re-attach previously migrated instance %d without recovering first. Ignoring\n", dmi_id);
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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}
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// Initialize the Non-persistent pieces
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TPMTRYRETURN( TCS_OpenContext(&new_dmi->TCSContext) );
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new_dmi->connected = TRUE;
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// Design specific new DMI code.
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// Includes: create IPCs, Measuring DMI, and maybe launching DMI
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TPMTRYRETURN(VTPM_New_DMI_Extra(new_dmi, vm_type, startup_mode) );
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goto egress;
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abort_egress:
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vtpmlogerror(VTPM_LOG_VTPM, "Failed to create DMI id=%d due to status=%s. Cleaning.\n", dmi_id, tpm_get_error_name(status));
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close_dmi(new_dmi );
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egress:
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return status;
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}
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TPM_RESULT VTPM_Handle_Close_DMI( const buffer_t *param_buf) {
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TPM_RESULT status=TPM_FAIL;
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VTPM_DMI_RESOURCE *dmi_res=NULL;
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UINT32 dmi_id;
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if ((param_buf == NULL) || (buffer_len(param_buf) != sizeof(UINT32)) ) {
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vtpmlogerror(VTPM_LOG_VTPM, "Closing DMI has bad size.");
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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}
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BSG_UnpackList( param_buf->bytes, 1,
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BSG_TYPE_UINT32, &dmi_id);
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vtpmloginfo(VTPM_LOG_VTPM, "Closing DMI %d.\n", dmi_id);
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dmi_res = (VTPM_DMI_RESOURCE *) hashtable_search(vtpm_globals->dmi_map, &dmi_id);
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if (dmi_res == NULL ) {
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vtpmlogerror(VTPM_LOG_VTPM, "Trying to close nonexistent DMI.\n");
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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}
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if (!dmi_res->connected) {
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vtpmlogerror(VTPM_LOG_VTPM, "Closing non-connected DMI.\n");
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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}
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// Close Dmi
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TPMTRYRETURN(close_dmi( dmi_res ));
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status=TPM_SUCCESS;
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goto egress;
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abort_egress:
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egress:
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return status;
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}
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TPM_RESULT VTPM_Handle_Delete_DMI( const buffer_t *param_buf) {
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TPM_RESULT status=TPM_FAIL;
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VTPM_DMI_RESOURCE *dmi_res=NULL;
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UINT32 dmi_id;
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if ((param_buf == NULL) || (buffer_len(param_buf) != sizeof(UINT32)) ) {
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vtpmlogerror(VTPM_LOG_VTPM, "Closing DMI has bad size.\n");
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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}
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BSG_UnpackList( param_buf->bytes, 1,
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BSG_TYPE_UINT32, &dmi_id);
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vtpmloginfo(VTPM_LOG_VTPM, "Deleting DMI %d.\n", dmi_id);
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dmi_res = (VTPM_DMI_RESOURCE *) hashtable_remove(vtpm_globals->dmi_map, &dmi_id);
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if (dmi_res == NULL) {
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vtpmlogerror(VTPM_LOG_VTPM, "Closing non-existent DMI.\n");
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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}
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//vtpm scripts delete file dmi_res->NVMLocation for us
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// Close DMI first
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TPMTRYRETURN(close_dmi( dmi_res ));
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free ( dmi_res );
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status=TPM_SUCCESS;
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goto egress;
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abort_egress:
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egress:
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return status;
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}
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