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/*
 *
 * Definitions for mount interface. This describes the in the kernel build
 * linkedlist with mounted filesystems.
 *
 * Author:  Marco van Wieringen <mvw@planets.elm.net>
 *
 * Version: $Id: mount.h,v 1.1 2004-01-28 15:26:00 giacomo Exp $
 *
 */
#ifndef _LINUX_MOUNT_H
#define _LINUX_MOUNT_H
#ifdef __KERNEL__

#include <linux/list.h>

#define MNT_NOSUID      1
#define MNT_NODEV       2
#define MNT_NOEXEC      4

struct vfsmount
{
        struct list_head mnt_hash;
        struct vfsmount *mnt_parent;    /* fs we are mounted on */
        struct dentry *mnt_mountpoint;  /* dentry of mountpoint */
        struct dentry *mnt_root;        /* root of the mounted tree */
        struct super_block *mnt_sb;     /* pointer to superblock */
        struct list_head mnt_mounts;    /* list of children, anchored here */
        struct list_head mnt_child;     /* and going through their mnt_child */
        atomic_t mnt_count;
        int mnt_flags;
        char *mnt_devname;              /* Name of device e.g. /dev/dsk/hda1 */
        struct list_head mnt_list;
};

static inline struct vfsmount *mntget(struct vfsmount *mnt)
{
        if (mnt)
                atomic_inc(&mnt->mnt_count);
        return mnt;
}

extern void __mntput(struct vfsmount *mnt);

static inline void mntput(struct vfsmount *mnt)
{
        if (mnt) {
                if (atomic_dec_and_test(&mnt->mnt_count))
                        __mntput(mnt);
        }
}

extern void free_vfsmnt(struct vfsmount *mnt);
extern struct vfsmount *alloc_vfsmnt(const char *name);
extern struct vfsmount *do_kern_mount(const char *fstype, int flags,
                                      const char *name, void *data);
extern spinlock_t vfsmount_lock;

#endif
#endif /* _LINUX_MOUNT_H */