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sortix--sortix/kernel/partition.h
2014-03-01 14:37:39 +01:00

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/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of Sortix.
Sortix is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.
Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
Sortix. If not, see <http://www.gnu.org/licenses/>.
partition.h
Block device representing a partition of another block device.
*******************************************************************************/
#ifndef PARTITION_H
#define PARTITION_H
#include <sortix/kernel/refcount.h>
#include <sortix/kernel/inode.h>
namespace Sortix {
class Partition : public AbstractInode
{
public:
Partition(Ref<Inode> inner_inode, off_t start, off_t length);
virtual ~Partition();
private:
Ref<Inode> inner_inode;
off_t start;
off_t length;
public:
virtual int sync(ioctx_t* ctx);
virtual int truncate(ioctx_t* ctx, off_t length);
virtual off_t lseek(ioctx_t* ctx, off_t offset, int whence);
virtual ssize_t pread(ioctx_t* ctx, uint8_t* buf, size_t count, off_t off);
virtual ssize_t pwrite(ioctx_t* ctx, const uint8_t* buf, size_t count,
off_t off);
};
} // namespace Sortix
#endif