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97 lines
1.9 KiB
C++
97 lines
1.9 KiB
C++
/*
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* \brief File-system node
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* \author Norman Feske
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* \author Christian Helmuth
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* \author Sebastian Sumpf
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* \date 2013-11-11
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*/
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/*
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* Copyright (C) 2013-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _NODE_H_
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#define _NODE_H_
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/* Genode includes */
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#include <file_system/node.h>
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#include <base/signal.h>
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namespace Rump_fs {
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using namespace File_system;
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using namespace Genode;
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using Genode::size_t;
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class Node;
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class File;
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class Directory;
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class Symlink;
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}
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class Rump_fs::Node : public Node_base
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{
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public:
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typedef char Name[128];
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private:
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Name _name;
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unsigned long const _inode;
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public:
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Node(unsigned long inode) : _inode(inode) { _name[0] = 0; }
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unsigned long inode() const { return _inode; }
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char const *name() const { return _name; }
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/**
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* Assign name
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*/
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void name(char const *name) { strncpy(_name, name, sizeof(_name)); }
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virtual size_t read(char *dst, size_t len, seek_off_t) = 0;
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virtual size_t write(char const *src, size_t len, seek_off_t) = 0;
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virtual Status status() = 0;
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/*
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* Directory functionality
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*/
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virtual int fd() const
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{
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Genode::error(__PRETTY_FUNCTION__, " called on a non-directory node");
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return -1;
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}
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virtual File *file(char const *name, Mode mode, bool create)
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{
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Genode::error(__PRETTY_FUNCTION__, " called on a non-directory node");
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return nullptr;
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}
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virtual Symlink *symlink(char const *name, bool create)
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{
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Genode::error(__PRETTY_FUNCTION__, " called on a non-directory node");
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return nullptr;
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}
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virtual void unlink(char const *path)
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{
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Genode::error(__PRETTY_FUNCTION__, " called on a non-directory node");
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}
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/*
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* File functionality
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*/
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virtual void truncate(file_size_t size)
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{
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Genode::error(__PRETTY_FUNCTION__, " called on a non-file node");
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}
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};
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#endif /* _NODE_H_ */
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