ta/storage/storage.c

/*
 * Copyright (c) 2014, STMicroelectronics International N.V.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. 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 "storage.h"

#include <tee_api.h>

#define ASSERT_PARAM_TYPE(pt) \
do { \
	if ((pt) != param_types) \
		return TEE_ERROR_BAD_PARAMETERS; \
} while (0)

TEE_Result ta_storage_cmd_open(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_MEMREF_INPUT,
			   TEE_PARAM_TYPE_VALUE_INOUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE));

	return TEE_OpenPersistentObject(TEE_STORAGE_PRIVATE,
					params[0].memref.buffer,
					params[0].memref.size,
					params[1].value.a,
					(void *)&params[1].value.b);
}

TEE_Result ta_storage_cmd_create(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_MEMREF_INPUT,
			   TEE_PARAM_TYPE_VALUE_INOUT,
			   TEE_PARAM_TYPE_VALUE_INPUT,
			   TEE_PARAM_TYPE_MEMREF_INPUT));

	return TEE_CreatePersistentObject(TEE_STORAGE_PRIVATE,
					  params[0].memref.buffer,
					  params[0].memref.size,
					  params[1].value.a,
					  (TEE_ObjectHandle) params[2].value.a,
					  params[3].memref.buffer,
					  params[3].memref.size,
					  (void *)&params[1].value.b);
}

TEE_Result ta_storage_cmd_close(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_VALUE_INPUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE, TEE_PARAM_TYPE_NONE));

	TEE_CloseObject((TEE_ObjectHandle) params[0].value.a);

	return TEE_SUCCESS;
}

TEE_Result ta_storage_cmd_read(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_MEMREF_OUTPUT,
			   TEE_PARAM_TYPE_VALUE_INOUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE));

	return TEE_ReadObjectData((TEE_ObjectHandle) params[1].value.a,
				  params[0].memref.buffer,
				  params[0].memref.size, &params[1].value.b);
}

TEE_Result ta_storage_cmd_write(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_MEMREF_INPUT,
			   TEE_PARAM_TYPE_VALUE_INPUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE));

	return TEE_WriteObjectData((TEE_ObjectHandle) params[1].value.a,
				   params[0].memref.buffer,
				   params[0].memref.size);
}

TEE_Result ta_storage_cmd_seek(uint32_t param_types, TEE_Param params[4])
{
	TEE_Result res;
	TEE_ObjectInfo info;

	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_VALUE_INPUT,
			   TEE_PARAM_TYPE_VALUE_INOUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE));

	res = TEE_SeekObjectData((TEE_ObjectHandle) params[0].value.a,
				 params[0].value.b, params[1].value.a);

	res = TEE_GetObjectInfo1((TEE_ObjectHandle) params[0].value.a, &info);

	params[1].value.b = info.dataPosition;

	return res;
}

TEE_Result ta_storage_cmd_unlink(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_VALUE_INPUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE, TEE_PARAM_TYPE_NONE));

	TEE_CloseAndDeletePersistentObject1((TEE_ObjectHandle) params[0].value.
					   a);

	return TEE_SUCCESS;
}

TEE_Result ta_storage_cmd_rename(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_VALUE_INPUT,
			   TEE_PARAM_TYPE_MEMREF_INPUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE));

	return TEE_RenamePersistentObject((TEE_ObjectHandle) params[0].value.a,
					  params[1].memref.buffer,
					  params[1].memref.size);
}

TEE_Result ta_storage_cmd_trunc(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_VALUE_INPUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE, TEE_PARAM_TYPE_NONE));

	return TEE_TruncateObjectData((TEE_ObjectHandle) params[0].value.a,
				      params[0].value.b);
}

TEE_Result ta_storage_cmd_alloc_enum(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_VALUE_OUTPUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE, TEE_PARAM_TYPE_NONE));

	return TEE_AllocatePersistentObjectEnumerator((void *)&params[0].
						      value.a);
}

TEE_Result ta_storage_cmd_free_enum(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_VALUE_INPUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE, TEE_PARAM_TYPE_NONE));

	TEE_FreePersistentObjectEnumerator((TEE_ObjectEnumHandle) params[0].
					   value.a);

	return TEE_SUCCESS;
}

TEE_Result ta_storage_cmd_reset_enum(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_VALUE_INPUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE, TEE_PARAM_TYPE_NONE));

	TEE_ResetPersistentObjectEnumerator((TEE_ObjectEnumHandle) params[0].
					    value.a);

	return TEE_SUCCESS;
}

TEE_Result ta_storage_cmd_start_enum(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_VALUE_INPUT, TEE_PARAM_TYPE_NONE,
			   TEE_PARAM_TYPE_NONE, TEE_PARAM_TYPE_NONE));

	return TEE_StartPersistentObjectEnumerator((TEE_ObjectEnumHandle)
						   params[0].value.a,
						   TEE_STORAGE_PRIVATE);
}

TEE_Result ta_storage_cmd_next_enum(uint32_t param_types, TEE_Param params[4])
{
	ASSERT_PARAM_TYPE(TEE_PARAM_TYPES
			  (TEE_PARAM_TYPE_VALUE_INPUT,
			   TEE_PARAM_TYPE_MEMREF_OUTPUT,
			   TEE_PARAM_TYPE_MEMREF_OUTPUT, TEE_PARAM_TYPE_NONE));

	if (params[1].memref.size < sizeof(TEE_ObjectInfo))
		return TEE_ERROR_SHORT_BUFFER;

	if (params[2].memref.size < TEE_OBJECT_ID_MAX_LEN)
		return TEE_ERROR_SHORT_BUFFER;

	params[1].memref.size = sizeof(TEE_ObjectInfo);

	return TEE_GetNextPersistentObject((TEE_ObjectEnumHandle) params[0].
					   value.a,
					   (TEE_ObjectInfo *) params[1].memref.
					   buffer, params[2].memref.buffer,
					   &params[2].memref.size);
}