/* $OpenBSD: fusefs_node.h,v 1.6 2026/01/22 11:53:31 helg Exp $ */
/*
 * Copyright (c) 2012-2013 Sylvestre Gallon <ccna.syl@gmail.com>
 *
 * 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.
 */

#ifndef _FUSEFS_NODE_H_
#define _FUSEFS_NODE_H_

#include <sys/queue.h>

enum fufh_type {
        FUFH_INVALID = -1,
        FUFH_RDONLY  = 0,
        FUFH_WRONLY  = 1,
        FUFH_RDWR    = 2,
        FUFH_MAXTYPE = 3,
};

struct fusefs_filehandle {
        uint64_t fh_id;
        enum fufh_type fh_type;
};

struct fusefs_mnt;
struct fusefs_node {
        LIST_ENTRY(fusefs_node)  i_hash; /* Hash chain */
        struct  vnode           *i_vnode;/* Vnode associated with this inode. */
        struct  fusefs_mnt      *i_ump;
        dev_t                    i_dev;  /* Device associated with the inode. */
        ino_t                    i_number;      /* The identity of the inode. */
        ino_t                    i_parent_cache;/* Parent inode (only dirs). */
        struct  lockf_state     *i_lockf;       /* Byte-level lock state. */
        struct  rrwlock          i_lock;        /* Inode lock */

        /** I/O **/
        struct     fusefs_filehandle fufh[FUFH_MAXTYPE];

        /** meta **/
        off_t                    filesize;
};

#ifdef ITOV
# undef ITOV
#endif
#define ITOV(ip) ((ip)->i_vnode)

#ifdef VTOI
# undef VTOI
#endif
#define VTOI(vp) ((struct fusefs_node *)(vp)->v_data)

void             fuse_ihashinit(void);
struct vnode    *fuse_ihashget(dev_t, ino_t);
int              fuse_ihashins(struct fusefs_node *);
void             fuse_ihashrem(struct fusefs_node *);

uint64_t fusefs_fd_get(struct fusefs_node *, enum fufh_type);

#endif /* _FUSEFS_NODE_H_ */