109 lines
1.9 KiB
C
109 lines
1.9 KiB
C
|
#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;
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|