[deliverable/linux.git] / fs / pnode.h

/*
 *  linux/fs/pnode.h
 *
 * (C) Copyright IBM Corporation 2005.
 *	Released under GPL v2.
 *
 */
#ifndef _LINUX_PNODE_H
#define _LINUX_PNODE_H

#include <linux/list.h>
#include "mount.h"

#define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED)
#define IS_MNT_SLAVE(m) ((m)->mnt_master)
#define IS_MNT_NEW(m)  (!(m)->mnt_ns)
#define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED)
#define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE)

#define CL_EXPIRE    		0x01
#define CL_SLAVE     		0x02
#define CL_COPY_ALL 		0x04
#define CL_MAKE_SHARED 		0x08
#define CL_PRIVATE 		0x10
#define CL_SHARED_TO_SLAVE	0x20
#define CL_UNPRIVILEGED		0x40

static inline void set_mnt_shared(struct mount *mnt)
{
	mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
	mnt->mnt.mnt_flags |= MNT_SHARED;
}

void change_mnt_propagation(struct mount *, int);
int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
		struct list_head *);
int propagate_umount(struct list_head *);
int propagate_mount_busy(struct mount *, int);
void mnt_release_group_id(struct mount *);
int get_dominating_id(struct mount *mnt, const struct path *root);
unsigned int mnt_get_count(struct mount *mnt);
void mnt_set_mountpoint(struct mount *, struct mountpoint *,
			struct mount *);
void umount_tree(struct mount *, int);
struct mount *copy_tree(struct mount *, struct dentry *, int);
bool is_path_reachable(struct mount *, struct dentry *,
			 const struct path *root);
#endif /* _LINUX_PNODE_H */
Commit	Line	Data
	1	/*
	2	* linux/fs/pnode.h
	3	*
	4	* (C) Copyright IBM Corporation 2005.
	5	* Released under GPL v2.
	6	*
	7	*/
	8	#ifndef _LINUX_PNODE_H
	9	#define _LINUX_PNODE_H
	10
	11	#include <linux/list.h>
	12	#include "mount.h"
	13
	14	#define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED)
	15	#define IS_MNT_SLAVE(m) ((m)->mnt_master)
	16	#define IS_MNT_NEW(m) (!(m)->mnt_ns)
	17	#define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED)
	18	#define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE)
	19
	20	#define CL_EXPIRE 0x01
	21	#define CL_SLAVE 0x02
	22	#define CL_COPY_ALL 0x04
	23	#define CL_MAKE_SHARED 0x08
	24	#define CL_PRIVATE 0x10
	25	#define CL_SHARED_TO_SLAVE 0x20
	26	#define CL_UNPRIVILEGED 0x40
	27
	28	static inline void set_mnt_shared(struct mount *mnt)
	29	{
	30	mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
	31	mnt->mnt.mnt_flags \|= MNT_SHARED;
	32	}
	33
	34	void change_mnt_propagation(struct mount *, int);
	35	int propagate_mnt(struct mount , struct mountpoint , struct mount *,
	36	struct list_head *);
	37	int propagate_umount(struct list_head *);
	38	int propagate_mount_busy(struct mount *, int);
	39	void mnt_release_group_id(struct mount *);
	40	int get_dominating_id(struct mount mnt, const struct path root);
	41	unsigned int mnt_get_count(struct mount *mnt);
	42	void mnt_set_mountpoint(struct mount , struct mountpoint ,
	43	struct mount *);
	44	void umount_tree(struct mount *, int);
	45	struct mount copy_tree(struct mount , struct dentry *, int);
	46	bool is_path_reachable(struct mount , struct dentry ,
	47	const struct path *root);
	48	#endif /* _LINUX_PNODE_H */