/*
 * Copyright (c) 2012, 2013 Jonas 'Sortie' Termansen.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * sortix/kernel/mtable.h
 * Class to keep track of mount points.
 */

#ifndef _INCLUDE_SORTIX_KERNEL_MTABLE_H
#define _INCLUDE_SORTIX_KERNEL_MTABLE_H

#include <sys/types.h>

#include <sortix/kernel/kthread.h>
#include <sortix/kernel/refcount.h>

namespace Sortix {

class Inode;

typedef struct
{
	Ref<Inode> inode;
	ino_t ino;
	dev_t dev;
	bool fsbind;
} mountpoint_t;

class MountTable : public Refcountable
{
public:
	MountTable();
	virtual ~MountTable();
	Ref<MountTable> Fork();
	bool AddMount(ino_t ino, dev_t dev, Ref<Inode> inode, bool fsbind);
	bool AddMountUnlocked(ino_t ino, dev_t dev, Ref<Inode> inode, bool fsbind);

public: // Consider these read-only.
	kthread_mutex_t mtablelock;
	mountpoint_t* mounts;
	size_t nummounts;

private:
	size_t mountsalloced;

};

} // namespace Sortix

#endif