gctf2023/pwn/flipper/dist/common/include/fs/VfsMount.h

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2023-11-24 18:11:34 +00:00
#pragma once
#include "types.h"
#include "VirtualFileSystem.h"
class Superblock;
class Dentry;
extern VirtualFileSystem vfs;
// Mount flags
// Only MS_RDONLY is supported by now.
/**
* Mount the Filesystem read-only
*/
#define MS_RDONLY 1
class VfsMount
{
protected:
/**
* Points to the parent filesystem on which this filesystem is mounted on.
*/
VfsMount *mnt_parent_;
/**
* Points to the Dentry of the mount directory of this filesystem.
*/
Dentry *mnt_mountpoint_;
/**
* Points to the Dentry of the root directory of this filesystem.
*/
Dentry *mnt_root_;
/**
* Points to the superblock object of this filesystem.
*/
Superblock *mnt_sb_;
/**
* The mnt_flags_ field of the descriptor stores the value of several flags
* that specify how some kinds of files in the mounted filesystem are
* handled.
*/
int32 mnt_flags_;
public:
VfsMount();
/**
* constructor
* @param parent the parent dentry of the mount point
* @param mountpoint the mount points dentry
* @param root the root dentry
* @param superblock the superblock mounted
* @param flags the flags
*/
VfsMount(VfsMount* parent, Dentry * mountpoint, Dentry* root,
Superblock* superblock, int32 flags);
virtual ~VfsMount();
/**
* get the parent-VfsMount of the VfsMount
* @return the parent-VfsMount
*/
VfsMount *getParent() const;
/**
* get the mount-point of the VfsMount
* @return the mount point dentry
*/
Dentry *getMountPoint() const;
/**
* get the ROOT-directory of the VfsMount
* @return the root dentry
*/
Dentry *getRoot() const;
/**
* get the superblock fo the VfsMount
* @return the superblock
*/
Superblock *getSuperblock() const;
/**
* get the flags
* @return the flags
*/
int32 getFlags() const;
/**
* NOTE: only used as workaround
*/
void clear();
bool isRootMount() const;
};