150 lines
5.4 KiB
C
150 lines
5.4 KiB
C
/****************************************************************************
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* fs/mnemofs/mnemofs_rw.c
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* Read/Write utilities for mnemofs
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Alternatively, the contents of this file may be used under the terms of
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* the BSD-3-Clause license:
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2024 Saurav Pal
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of its contributors may
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* be used to endorse or promote products derived from this software
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "mnemofs.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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int mfs_isbadblk(FAR const struct mfs_sb_s * const sb, mfs_t blk)
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{
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return MTD_ISBAD(MFS_MTD(sb), blk);
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}
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int mfs_markbadblk(FAR const struct mfs_sb_s * const sb, mfs_t blk)
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{
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return MTD_ISBAD(MFS_MTD(sb), blk);
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}
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/* NOTE: These functions do not update the block allocator's state nor do
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* they enforce it.
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*/
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ssize_t mfs_write_page(FAR const struct mfs_sb_s * const sb,
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FAR const char *data, const mfs_t datalen,
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const off_t page, const mfs_t pgoff)
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{
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int ret = OK;
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mempcpy(MFS_RWBUF(sb) + pgoff, data, datalen);
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ret = MTD_BWRITE(MFS_MTD(sb), page, 1, MFS_RWBUF(sb));
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if (ret < 0)
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{
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goto errout_with_reset;
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}
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errout_with_reset:
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memset(MFS_RWBUF(sb), 0, MFS_PGSZ(sb));
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return ret;
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}
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ssize_t mfs_read_page(FAR const struct mfs_sb_s * const sb,
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FAR char *data, const mfs_t datalen, const off_t page,
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const mfs_t pgoff)
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{
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int ret = OK;
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ret = MTD_BREAD(MFS_MTD(sb), page, 1, MFS_RWBUF(sb));
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if (ret < 0)
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{
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goto errout_with_reset;
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}
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memcpy(data, MFS_RWBUF(sb) + pgoff, datalen);
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errout_with_reset:
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memset(MFS_RWBUF(sb), 0, MFS_PGSZ(sb));
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return ret;
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}
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int mfs_erase_blk(FAR const struct mfs_sb_s * const sb, const off_t blk)
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{
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return MTD_ERASE(MFS_MTD(sb), blk, 1);
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}
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int mfs_erase_nblks(FAR const struct mfs_sb_s * const sb, const off_t blk,
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const size_t n)
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{
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return MTD_ERASE(MFS_MTD(sb), blk, n);
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}
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