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#ifndef _LINUX_NAMEI_H
#define _LINUX_NAMEI_H

#include <linux/linkage.h>

struct vfsmount;

struct open_intent {
        int     flags;
        int     create_mode;
};

struct nameidata {
        struct dentry   *dentry;
        struct vfsmount *mnt;
        struct qstr     last;
        unsigned int    flags;
        int             last_type;

        /* Intent data */
        union {
                struct open_intent open;
        } intent;
};

/*
 * Type of the last component on LOOKUP_PARENT
 */
enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND};

/*
 * The bitmask for a lookup event:
 *  - follow links at the end
 *  - require a directory
 *  - ending slashes ok even for nonexistent files
 *  - internal "there are more path compnents" flag
 *  - locked when lookup done with dcache_lock held
 */
#define LOOKUP_FOLLOW            1
#define LOOKUP_DIRECTORY         2
#define LOOKUP_CONTINUE          4
#define LOOKUP_PARENT           16
#define LOOKUP_NOALT            32
/*
 * Intent data
 */
#define LOOKUP_OPEN             (0x0100)
#define LOOKUP_CREATE           (0x0200)
#define LOOKUP_ACCESS           (0x0400)

extern int FASTCALL(__user_walk(const char __user *, unsigned, struct nameidata *));
#define user_path_walk(name,nd) \
        __user_walk(name, LOOKUP_FOLLOW, nd)
#define user_path_walk_link(name,nd) \
        __user_walk(name, 0, nd)
extern int FASTCALL(path_lookup(const char *, unsigned, struct nameidata *));
extern int FASTCALL(path_walk(const char *, struct nameidata *));
extern int FASTCALL(link_path_walk(const char *, struct nameidata *));
extern void path_release(struct nameidata *);

extern struct dentry * lookup_one_len(const char *, struct dentry *, int);
extern struct dentry * lookup_hash(struct qstr *, struct dentry *);

extern int follow_down(struct vfsmount **, struct dentry **);
extern int follow_up(struct vfsmount **, struct dentry **);

extern struct dentry *lock_rename(struct dentry *, struct dentry *);
extern void unlock_rename(struct dentry *, struct dentry *);

#endif /* _LINUX_NAMEI_H */