66 lines
2.8 KiB
C
66 lines
2.8 KiB
C
/*
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* Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MOUNT_H_
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#define _MOUNT_H_
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#include "los_mux.h"
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#include "fs/vfs_util.h"
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#include "fs/vnode.h"
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#include <sys/stat.h>
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#include <limits.h>
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struct MountOps;
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struct Mount {
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LIST_ENTRY mountList; /* mount list */
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const struct MountOps *ops; /* operations of mount */
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struct Vnode *vnodeBeCovered; /* vnode we mounted on */
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struct Vnode *vnodeCovered; /* syncer vnode */
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LIST_HEAD vnodeList; /* list of vnodes */
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int vnodeSize; /* size of vnode list */
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LIST_HEAD activeVnodeList; /* list of active vnodes */
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int activeVnodeSize; /* szie of active vnodes list */
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void *data; /* private data */
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uint32_t hashseed; /* Random seed for vfshash */
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unsigned long mountFlags; /* Flags for mount */
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char pathName[PATH_MAX]; /* path name of mount point */
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};
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struct MountOps {
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int (*Mount)(struct Mount *mount, struct Vnode *vnode, const void *data);
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int (*Unmount)(struct Mount *mount, struct Vnode **blkdriver);
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int (*Statfs)(struct Mount *mount, struct statfs *sbp);
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};
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struct Mount* MountAlloc(struct Vnode* vnode, struct MountOps* mop);
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LIST_HEAD* GetMountList(void);
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#endif
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