tests/tpm_lite/tpmtest_redefine_unowned.c

/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

/* Test of protection from space redefinition when an owner is NOT present.
 */

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>

#include "host_common.h"
#include "test_common.h"
#include "tlcl.h"
#include "tlcl_tests.h"

int main(int argc, char** argv) {
	uint32_t perm;
	uint32_t x;

	TlclLibInit();
	TPM_CHECK(TlclStartupIfNeeded());
	TPM_CHECK(TlclSelfTestFull());
	TPM_CHECK(TlclAssertPhysicalPresence());

	TEST_FALSE(TlclIsOwned(), "TlclIsOwned should return false");

	/* Ensures spaces exist. */
	TPM_CHECK(TlclRead(INDEX0, (uint8_t*) &x, sizeof(x)));
	TPM_CHECK(TlclRead(INDEX1, (uint8_t*) &x, sizeof(x)));

	/* Redefines spaces a couple of times. */
	perm = TPM_NV_PER_PPWRITE | TPM_NV_PER_GLOBALLOCK;
	TPM_CHECK(TlclDefineSpace(INDEX0, perm, 2 * sizeof(uint32_t)));
	TPM_CHECK(TlclDefineSpace(INDEX0, perm, sizeof(uint32_t)));

	perm = TPM_NV_PER_PPWRITE;
	TPM_CHECK(TlclDefineSpace(INDEX1, perm, 2 * sizeof(uint32_t)));
	TPM_CHECK(TlclDefineSpace(INDEX1, perm, sizeof(uint32_t)));

	// Sets the global lock.
	TlclSetGlobalLock();

	// Verifies that index0 cannot be redefined.
	TPM_EXPECT(TlclDefineSpace(INDEX0, perm, sizeof(uint32_t)),
		   TPM_E_AREA_LOCKED);

	// Checks that index1 can.
	TPM_CHECK(TlclDefineSpace(INDEX1, perm, 2 * sizeof(uint32_t)));
	TPM_CHECK(TlclDefineSpace(INDEX1, perm, sizeof(uint32_t)));

	// Turns off PP.
	TlclLockPhysicalPresence();

	// Verifies that neither index0 nor index1 can be redefined.
	TPM_EXPECT(TlclDefineSpace(INDEX0, perm, sizeof(uint32_t)),
		   TPM_E_BAD_PRESENCE);
	TPM_EXPECT(TlclDefineSpace(INDEX1, perm, sizeof(uint32_t)),
		   TPM_E_BAD_PRESENCE);

	printf("TEST SUCCEEDED\n");
	exit(0);
}