/*      $NetBSD: efs_inode.h,v 1.1 2007/06/29 23:30:29 rumble Exp $     */

/*
 * Copyright (c) 2006 Stephen M. Rumble <rumble@ephemeral.org>
 *
 * 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 _FS_EFS_EFS_INODE_H_
#define _FS_EFS_EFS_INODE_H_

#include <fs/efs/efs_subr.h>

/*
 * The efs_inode structure represents an in-core inode. It contains meta-data
 * corresponding directly to the efs_dinode structure in host byte order and
 * with native NetBSD flags and fields, a copy of the on-disk dinode structure,
 * as well as other bookkeeping information.
 */
struct efs_inode {
        struct genfs_node       ei_gnode;
        struct lockf           *ei_lockf;       /* advisory lock */
        ino_t                   ei_number;      /* inode number */
        dev_t                   ei_dev;         /* associated device */
        struct vnode           *ei_vp;          /* associated vnode */
        LIST_ENTRY(efs_inode)   ei_hash;        /* inode hash chain */

        /*
         * Host-ordered on-disk fields with native NetBSD types and flags.
         */
        uint16_t                ei_mode;        /* file type and permissions */
        int16_t                 ei_nlink;       /* link count (minimum 2) */
        uid_t                   ei_uid;         /* user ID */
        gid_t                   ei_gid;         /* group ID */
        int32_t                 ei_size;        /* file size (in bytes) */
        time_t                  ei_atime;       /* file access time */
        time_t                  ei_mtime;       /* file modification time */
        time_t                  ei_ctime;       /* inode modification time */
        int32_t                 ei_gen;         /* inode generation number */
        int16_t                 ei_numextents;  /* number of extents in file */
        uint8_t                 ei_version;     /* inode version */

        /*
         * Copy of the on-disk inode structure, in EFS native format and
         * endianness.
         */
        struct efs_dinode       ei_di;
};

#define EFS_VTOI(vp)    ((struct efs_inode *)(vp)->v_data)
#define EFS_ITOV(eip)   ((struct vnode *)(eip)->ei_vp)

/*
 * File handle. The first two fields must match struct fid (see sys/fstypes.h).
 */
struct efs_fid {
        unsigned short  ef_len;                 /* length of data in bytes */
        unsigned short  ef_pad;                 /* compat: historic align */
        int32_t         ef_ino;                 /* inode number */
        int32_t         ef_gen;                 /* inode generation number */
};

#endif /* !_FS_EFS_EFS_INODE_H_ */