#ifndef _LMV_INTERNAL_H_
#define _LMV_INTERNAL_H_

#define LL_IT2STR(it)				        \
	((it) ? ldlm_it2str((it)->it_op) : "0")

#define MEA_SIZE_LMV(lmv)				\
        ((lmv)->desc.ld_tgt_count *			\
	 sizeof(struct ll_fid) + sizeof(struct mea))
        
struct lmv_inode {
        struct ll_fid      fid;            /* fid of dirobj */
        unsigned long      size;           /* slave size value */
        int                flags;
};

#define O_FREEING          (1 << 0)

struct lmv_obj {
        struct list_head   list;
	struct semaphore   guard;
	int                state;          /* object state. */
        atomic_t           count;          /* ref counter. */
        struct ll_fid      fid;            /* master fid of dir */
        void               *update;        /* bitmap of status (uptodate) */
	__u32		   hashtype;
        int                objcount;       /* number of slaves */
        struct lmv_inode   *objs;          /* array of dirobjs */
        struct obd_device  *obd;           /* pointer to LMV itself */
	unsigned long      mtime;
	unsigned long      ctime;
	unsigned long      atime;
	unsigned long      nlink;
};

static inline void
lmv_lock_obj(struct lmv_obj *obj)
{
        LASSERT(obj);
        down(&obj->guard);
}

static inline void
lmv_unlock_obj(struct lmv_obj *obj)
{
        LASSERT(obj);
        up(&obj->guard);
}

void lmv_add_obj(struct lmv_obj *obj);
void lmv_del_obj(struct lmv_obj *obj);

void lmv_put_obj(struct lmv_obj *obj);
void lmv_free_obj(struct lmv_obj *obj);

int lmv_setup_mgr(struct obd_device *obd);
void lmv_cleanup_mgr(struct obd_device *obd);
int lmv_check_connect(struct obd_device *obd);

struct lmv_obj *lmv_get_obj(struct lmv_obj *obj);

struct lmv_obj *lmv_grab_obj(struct obd_device *obd,
			     struct ll_fid *fid);

struct lmv_obj *lmv_alloc_obj(struct obd_device *obd,
			      struct ll_fid *fid,
			      struct mea *mea);

struct lmv_obj *lmv_create_obj(struct obd_export *exp,
			       struct ll_fid *fid,
			       struct mea *mea);

int lmv_delete_obj(struct obd_export *exp, struct ll_fid *fid);

int lmv_intent_lock(struct obd_export *, struct ll_uctxt *,
                    struct ll_fid *, const char *, int, void *, int,
		    struct ll_fid *, struct lookup_intent *, int,
		    struct ptlrpc_request **, ldlm_blocking_callback);

int lmv_intent_lookup(struct obd_export *, struct ll_uctxt *,
                      struct ll_fid *, const char *, int, void *, int,
		      struct ll_fid *, struct lookup_intent *, int,
		      struct ptlrpc_request **, ldlm_blocking_callback);

int lmv_intent_getattr(struct obd_export *, struct ll_uctxt *,
                       struct ll_fid *, const char *, int, void *, int,
		       struct ll_fid *, struct lookup_intent *, int,
		       struct ptlrpc_request **, ldlm_blocking_callback);

int lmv_intent_open(struct obd_export *, struct ll_uctxt *,
                    struct ll_fid *, const char *, int, void *, int,
		    struct ll_fid *, struct lookup_intent *, int,
		    struct ptlrpc_request **, ldlm_blocking_callback);

int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **,
                          struct ll_fid *, struct lookup_intent *, int,
			  ldlm_blocking_callback cb_blocking);

int lmv_get_mea_and_update_object(struct obd_export *, struct ll_fid *);
int lmv_dirobj_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
			    void *, int);

static inline struct mea * 
body_of_splitted_dir(struct ptlrpc_request *req, int offset)
{
	struct mds_body *body;
	struct mea *mea;

	LASSERT(req);

        body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));

	if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
		return NULL;

        mea = lustre_msg_buf(req->rq_repmsg,
			     offset + 1, body->eadatasize);
	LASSERT(mea);

	if (mea->mea_count == 0)
		return NULL;
	
	return mea;
}

static inline int
fid_equal(struct ll_fid *fid1, struct ll_fid *fid2)
{
        if (fid1->mds != fid2->mds)
                return 0;
        if (fid1->id != fid2->id)
                return 0;
        if (fid1->generation != fid2->generation)
                return 0;
        return 1;
}

#endif