/*
 * This file and its contents are supplied under the terms of the
 * Common Development and Distribution License ("CDDL"), version 1.0.
 * You may only use this file in accordance with the terms of version
 * 1.0 of the CDDL.
 *
 * A full copy of the text of the CDDL should have accompanied this
 * source.  A copy of the CDDL is also available via the Internet at
 * http://www.illumos.org/license/CDDL.
 */

/*
 * Copyright (c) 2014 Joyent, Inc.  All rights reserved.
 */

#ifndef _SYS_FS_BOOTFS_IMPL_H
#define _SYS_FS_BOOTFS_IMPL_H

#include <sys/types.h>
#include <sys/list.h>
#include <sys/avl.h>
#include <sys/vnode.h>
#include <sys/vfs_opreg.h>
#include <sys/kstat.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
 * The bootfs node is the file system specific version of the vnode for the
 * bootfs file system. Because the bootfs file system is entirely a read-only
 * file system, this structure requires no locking as the contents are
 * immutable.
 */
typedef struct bootfs_node {
        char                    *bvn_name;      /* entry name */
        struct vnode            *bvn_vnp;       /* Corresponding vnode */
        avl_tree_t              bvn_dir;        /* directory entries, if VDIR */
        avl_node_t              bvn_link;       /* dirent link */
        list_node_t             bvn_alink;      /* link for all nodes */
        uint64_t                bvn_addr;       /* Address in pmem */
        uint64_t                bvn_size;       /* Size of the file */
        struct bootfs_node      *bvn_parent;    /* .. */
        vattr_t                 bvn_attr;       /* attributes for the node */
} bootfs_node_t;

typedef struct bootfs_stat {
        kstat_named_t   bfss_nfiles;
        kstat_named_t   bfss_ndirs;
        kstat_named_t   bfss_nbytes;
        kstat_named_t   bfss_ndups;
        kstat_named_t   bfss_ndiscards;
} bootfs_stat_t;

typedef struct bootfs {
        vfs_t                   *bfs_vfsp;
        char                    *bfs_mntpath;
        bootfs_node_t           *bfs_rootvn;
        kstat_t                 *bfs_kstat;
        list_t                  bfs_nodes;
        minor_t                 bfs_minor;
        uint_t                  bfs_ninode;
        bootfs_stat_t           bfs_stat;
} bootfs_t;

extern void bootfs_construct(bootfs_t *);
extern void bootfs_destruct(bootfs_t *);
extern int bootfs_node_constructor(void *, void *, int);
extern void bootfs_node_destructor(void *, void *);

extern struct vnodeops *bootfs_vnodeops;
extern const fs_operation_def_t bootfs_vnodeops_template[];
extern kmem_cache_t *bootfs_node_cache;
extern major_t bootfs_major;

#ifdef __cplusplus
}
#endif

#endif /* _SYS_FS_BOOTFS_IMPL_H */