101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
/****************************************************************************
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* fs/driver/fs_mtdpartition.c
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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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****************************************************************************/
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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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