mbed-os/storage/filesystem/littlefsv2/tests/TESTS/COMMON/atomic_usage.h

67 lines
2.5 KiB
C

/* mbed Microcontroller Library
* Copyright (c) 2017-2020 ARM Limited
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_ATOMIC_USAGE_H
#define MBED_ATOMIC_USAGE_H
#include "BlockDevice.h"
/**
* Setup the given block device to test littlefs atomic operations
*
* Format the blockdevice with a littlefs filesystem and create
* the files and directories required to test atomic operations.
*
* @param bd Block device format and setup
* @param force_rebuild Force a reformat even if the device is already setup
* @return true if the block device was formatted, false otherwise
* @note utest asserts are used to detect fatal errors so utest must be
* initialized before calling this function.
*/
bool setup_atomic_operations(BlockDevice *bd, bool force_rebuild);
/**
* Perform a set of atomic littlefs operations on the block device
*
* Mount the block device as a littlefs filesystem and a series of
* atomic operations on it. Since the operations performed are atomic
* the file system will always be in a well defined state. The block
* device must have been setup by calling setup_atomic_operations.
*
* @param bd Block device to perform the operations on
* @return -1 if flash is exhausted, otherwise the cycle count on the fs
* @note utest asserts are used to detect fatal errors so utest must be
* initialized before calling this function.
*/
int64_t perform_atomic_operations(BlockDevice *bd);
/**
* Check that the littlefs image on the block device is in a good state
*
* Mount the block device as a littlefs filesystem and check the files
* and directories to ensure they are valid. Since all the operations
* performed are atomic the filesystem should always be in a good
* state.
*
* @param bd Block device to check
* @note This function does not change the contents of the block device
* @note utest asserts are used to detect fatal errors so utest must be
* initialized before calling this function.
*/
void check_atomic_operations(BlockDevice *bd);
#endif