kernel_liteos_a/fs/zpfs/vfs_zpfs.h

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/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
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#ifndef ZPFS_VFS_ZPFS_H
#define ZPFS_VFS_ZPFS_H
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#include <fs/fs.h>
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#include "compiler.h"
#include "los_base.h"
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#include "los_typedef.h"
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#include "menuconfig.h"
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#ifdef LOSCFG_FS_ZPFS
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#define ZPFS_NAME "zpfs"
#define ZPFS_LEVELS 3
typedef struct ZpfsDir {
char *relPath;
int index;
int openEntry;
} ZpfsDir;
typedef struct ZpfsEntry {
struct inode *mountedInode;
char *mountedPath;
char *mountedRelpath;
} ZpfsEntry;
typedef struct ZpfsConfig {
char *patchTarget;
struct inode *patchTargetInode;
struct inode *patchInode;
int entryCount;
ZpfsEntry orgEntry[ZPFS_LEVELS];
} ZpfsConfig;
ZpfsConfig *GetZpfsConfig(const struct inode *inode);
int ZpfsPrepare(const char *source, const char *target, struct inode **inodePtr, bool force);
void ZpfsFreeConfig(ZpfsConfig *zpfsCfg);
void ZpfsCleanUp(const void *node, const char *target);
bool IsZpfsFileSystem(struct inode *inode);
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#endif /* LOSCFG_FS_ZPFS */
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#endif /* ZPFS_VFS_ZPFS_H */