mirror of
https://github.com/apache/nuttx.git
synced 2026-06-06 08:36:24 +08:00
Xiang Xiao
b7b96941b3
Note: all attributes is guarded by PSEUDOFS_ATTRIBUTES to save the space Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> Change-Id: I664d60382e356068fd920f08aca5b4a49d8d92a9
101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
/****************************************************************************
|
|
* fs/driver/fs_registermtddriver.c
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <errno.h>
|
|
|
|
#include <nuttx/fs/fs.h>
|
|
#include <nuttx/mtd/mtd.h>
|
|
|
|
#include "inode/inode.h"
|
|
|
|
#if defined(CONFIG_MTD) && !defined(CONFIG_DISABLE_MOUNTPOINT)
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: register_mtddriver
|
|
*
|
|
* Description:
|
|
* Register an MTD driver inode the pseudo file system.
|
|
*
|
|
* Input Parameters:
|
|
* path - The path to the inode to create
|
|
* mtd - The MTD driver structure
|
|
* mode - inode privileges
|
|
* priv - Private, user data that will be associated with the inode.
|
|
*
|
|
* Returned Value:
|
|
* Zero on success (with the inode point in 'inode'); A negated errno
|
|
* value is returned on a failure (all error values returned by
|
|
* inode_reserve):
|
|
*
|
|
* EINVAL - 'path' is invalid for this operation
|
|
* EEXIST - An inode already exists at 'path'
|
|
* ENOMEM - Failed to allocate in-memory resources for the operation
|
|
*
|
|
****************************************************************************/
|
|
|
|
int register_mtddriver(FAR const char *path, FAR struct mtd_dev_s *mtd,
|
|
mode_t mode, FAR void *priv)
|
|
{
|
|
FAR struct inode *node;
|
|
int ret;
|
|
|
|
/* Insert an inode for the device driver -- we need to hold the inode
|
|
* semaphore to prevent access to the tree while we this. This is because
|
|
* we will have a momentarily bad true until we populate the inode with
|
|
* valid data.
|
|
*/
|
|
|
|
ret = inode_semtake();
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
ret = inode_reserve(path, mode, &node);
|
|
if (ret >= 0)
|
|
{
|
|
/* We have it, now populate it with block driver specific information.
|
|
* NOTE that the initial reference count on the new inode is zero.
|
|
*/
|
|
|
|
INODE_SET_MTD(node);
|
|
|
|
node->u.i_mtd = mtd;
|
|
node->i_private = priv;
|
|
ret = OK;
|
|
}
|
|
|
|
inode_semgive();
|
|
return ret;
|
|
}
|
|
|
|
#endif /* CONFIG_MTD && !CONFIG_DISABLE_MOUNTPOINT */
|