116 lines
3.8 KiB
C
116 lines
3.8 KiB
C
/****************************************************************************
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* fs/driver/fs_mtdpartition.c
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*
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* Copyright (C) 2018 Pinecone Inc. All rights reserved.
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* Author: Xiang Xiao <xiaoxiang@pinecone.net>
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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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* 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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* 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 (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF 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 <nuttx/config.h>
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#include <errno.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/mtd/mtd.h>
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#include "driver/driver.h"
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#include "inode/inode.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: register_mtdpartition
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*
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* Description:
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* Register a mtd partition driver inode the pseudo file system.
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*
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* Input Parameters:
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* partition - The path to the partition inode
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* parent - The path to the parent inode
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* firstblock - The offset in block to the partition
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* nblocks - The number of block in the partition
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*
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* Returned Value:
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* Zero on success (with the inode point in 'inode'); A negated errno
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* value is returned on a failure (all error values returned by
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* inode_reserve):
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*
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* EINVAL - 'path' is invalid for this operation
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* EEXIST - An inode already exists at 'path'
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* ENOMEM - Failed to allocate in-memory resources for the operation
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*
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****************************************************************************/
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int register_mtdpartition(FAR const char *partition,
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mode_t mode, FAR const char *parent,
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off_t firstblock, size_t nblocks)
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{
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FAR struct mtd_dev_s *part;
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FAR struct inode *mtd;
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int ret;
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/* Find the mtd driver */
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ret = find_mtddriver(parent, &mtd);
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if (ret < 0)
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{
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return ret;
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}
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/* Create the mtd partition */
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part = mtd_partition(mtd->u.i_mtd, firstblock, nblocks);
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inode_release(mtd);
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if (part == NULL)
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{
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return -EINVAL;
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}
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#ifdef CONFIG_MTD_PARTITION_NAMES
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mtd_setpartitionname(part, partition);
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#endif
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/* Register the mtd partition */
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ret = register_mtddriver(partition, part, mode, part);
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if (ret < 0)
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{
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return ret;
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}
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return OK;
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}
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