FreeNOS
Storage.h
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1 /*
2  * Copyright (C) 2009 Niek Linnenbank
3  *
4  * This program is free software: you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program. If not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #ifndef __LIB_LIBFS_STORAGE_H
19 #define __LIB_LIBFS_STORAGE_H
20 
21 #include <Types.h>
22 #include "FileSystem.h"
23 
35 class Storage
36 {
37  public:
38 
42  Storage();
43 
47  virtual ~Storage();
48 
54  virtual FileSystem::Result initialize() = 0;
55 
65  virtual FileSystem::Result read(const u64 offset, void *buffer, const Size size) const = 0;
66 
76  virtual FileSystem::Result write(const u64 offset, void *buffer, const Size size);
77 
83  virtual u64 capacity() const = 0;
84 };
85 
91 #endif /* __LIB_LIBFS_STORAGE_H */
FileSystem.h
Types.h
u64
unsigned long long u64
Unsigned 64-bit number.
Definition: Types.h:50
Storage::write
virtual FileSystem::Result write(const u64 offset, void *buffer, const Size size)
Write a contiguous set of data.
Definition: Storage.cpp:29
Storage::~Storage
virtual ~Storage()
Destructor function.
Definition: Storage.cpp:25
Size
unsigned int Size
Any sane size indicator cannot go negative.
Definition: Types.h:128
Storage::capacity
virtual u64 capacity() const =0
Retrieve maximum storage capacity.
Storage::Storage
Storage()
Constructor function.
Definition: Storage.cpp:21
FileSystem::Result
Result
Result code for filesystem Actions.
Definition: FileSystem.h:52
Storage::read
virtual FileSystem::Result read(const u64 offset, void *buffer, const Size size) const =0
Read a contiguous set of data.
Storage
Provides a storage device to build filesystems on top.
Definition: Storage.h:35
Storage::initialize
virtual FileSystem::Result initialize()=0
Initialize the Storage device.