27f672d55a
A segmentfault might happen when read/write/unlink ops called without an open ops called because it bind ept's ops in rpmsgblk_open_handler. proxy> rm /dev/ram1 segmentfault proxy> ls /dev/ram1 segmentfault Signed-off-by: liaoao <liaoao@xiaomi.com>
164 lines
5.7 KiB
C
164 lines
5.7 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: register_partition_with_inode
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*
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* Description:
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* Register a block 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 parent inode
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* firstsector - The offset in sectors to the partition
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* nsectors - The number of sectors 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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#ifndef CONFIG_DISABLE_MOUNTPOINT
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int register_partition_with_inode(FAR const char *partition,
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mode_t mode, FAR struct inode *parent,
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off_t firstsector, off_t nsectors);
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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: register_partition_with_mtd
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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 parent mtd instance
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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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#ifdef CONFIG_MTD
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int register_partition_with_mtd(FAR const char *partition,
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mode_t mode, FAR struct mtd_dev_s *parent,
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off_t firstblock, off_t nblocks);
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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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