FreeNOS
PseudoFile.h
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1 /*
2  * Copyright (C) 2015 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_PSEUDOFILE_H
19 #define __LIB_LIBFS_PSEUDOFILE_H
20 
21 #include <Types.h>
22 #include "File.h"
23 #include "IOBuffer.h"
24 
36 class PseudoFile : public File
37 {
38  public:
39 
45  PseudoFile(const u32 inode);
46 
53  PseudoFile(const u32 inode,
54  const char *str);
55 
59  virtual ~PseudoFile();
60 
71  virtual FileSystem::Result read(IOBuffer & buffer,
72  Size & size,
73  const Size offset);
74 
85  virtual FileSystem::Result write(IOBuffer & buffer,
86  Size & size,
87  const Size offset);
88 
89  private:
90 
92  char *m_buffer;
93 };
94 
100 #endif /* __LIB_LIBFS_PSEUDOFILE_H */
Types.h
PseudoFile::read
virtual FileSystem::Result read(IOBuffer &buffer, Size &size, const Size offset)
Read bytes from the file.
Definition: PseudoFile.cpp:50
IOBuffer.h
File
Represents a file present on a FileSystem.
Definition: File.h:39
PseudoFile::write
virtual FileSystem::Result write(IOBuffer &buffer, Size &size, const Size offset)
Write bytes to the file.
Definition: PseudoFile.cpp:69
IOBuffer
Abstract Input/Output buffer.
Definition: IOBuffer.h:37
u32
unsigned int u32
Unsigned 32-bit number.
Definition: Types.h:53
Size
unsigned int Size
Any sane size indicator cannot go negative.
Definition: Types.h:128
PseudoFile::m_buffer
char * m_buffer
Buffer from which we read.
Definition: PseudoFile.h:92
PseudoFile
Pseudo files only exist in memory.
Definition: PseudoFile.h:36
PseudoFile::PseudoFile
PseudoFile(const u32 inode)
Default constructor.
Definition: PseudoFile.cpp:23
PseudoFile::~PseudoFile
virtual ~PseudoFile()
Destructor.
Definition: PseudoFile.cpp:42
FileSystem::Result
Result
Result code for filesystem Actions.
Definition: FileSystem.h:52
File.h