25c2f3e042
Rpmsg mtd need a way to find the mtd device according to the mtd device path. Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
133 lines
4.5 KiB
C
133 lines
4.5 KiB
C
/****************************************************************************
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* fs/driver/driver.h
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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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#ifndef __FS_DRIVER_DRIVER_H
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#define __FS_DRIVER_DRIVER_H
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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 <nuttx/compiler.h>
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#include <nuttx/fs/fs.h>
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#include "inode/inode.h"
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: find_blockdriver
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*
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* Description:
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* Return the inode of the block driver specified by 'pathname'
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*
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* Input Parameters:
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* pathname - The full path to the block driver to be located
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* mountflags - If MS_RDONLY is not set, then driver must support write
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* operations (see include/sys/mount.h)
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* ppinode - Address of the location to return the inode reference
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*
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* Returned Value:
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* Returns zero on success or a negated errno on failure:
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*
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* ENOENT - No block driver of this name is registered
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* ENOTBLK - The inode associated with the pathname is not a block driver
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* EACCESS - The MS_RDONLY option was not set but this driver does not
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* support write access
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*
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****************************************************************************/
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#ifndef CONFIG_DISABLE_MOUNTPOINT
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int find_blockdriver(FAR const char *pathname, int mountflags,
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FAR struct inode **ppinode);
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#endif
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/****************************************************************************
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* Name: block_proxy
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*
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* Description:
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* Create a temporary char driver using drivers/bch to mediate character
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* oriented accessed to the block driver.
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*
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* Input Parameters:
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* filep - The caller provided location in which to return the 'struct
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* file' instance.
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* blkdev - The path to the block driver
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* oflags - Character driver open flags
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*
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* Returned Value:
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* Zero (OK) is returned on success. On failure, a negated errno value is
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* returned.
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*
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****************************************************************************/
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#ifndef CONFIG_DISABLE_MOUNTPOINT
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int block_proxy(FAR struct file *filep, FAR const char *blkdev, int oflags);
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#endif
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/****************************************************************************
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* Name: mtd_proxy
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*
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* Description:
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* Create a temporary block driver using drivers/mtd/ftl to mediate block
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* oriented accessed to the mtd driver.
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*
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* Input Parameters:
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* mtddev - The path to the mtd driver
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* mountflags - if MS_RDONLY is not set, then driver must support write
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* operations (see include/sys/mount.h)
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* ppinode - address of the location to return the inode reference
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*
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* Returned Value:
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* If zero, non-zero inode pointer is returned on success. This
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* is the inode pointer of the nameless block driver that mediates
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* accesses to the mtd driver. A negated errno value is returned on
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* any failure.
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*
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****************************************************************************/
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#ifdef CONFIG_MTD
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int mtd_proxy(FAR const char *mtddev, int mountflags,
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FAR struct inode **ppinode);
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __FS_DRIVER_DRIVER_H */
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