/*      $NetBSD: cd9660_extern.h,v 1.29 2024/05/19 15:41:53 tsutsui Exp $       */

/*-
* Copyright (c) 1994
*      The Regents of the University of California.  All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson ([email protected]).  The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai ([email protected]).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*      @(#)iso.h       8.4 (Berkeley) 12/5/94
*/

/*
* Definitions used in the kernel for cd9660 file system support.
*/
#ifndef _ISOFS_CD9660_CD9660_EXTERN_H_
#define _ISOFS_CD9660_CD9660_EXTERN_H_

/*
* Sysctl values for the cd9660 filesystem.
*/
#define CD9660_UTF8_JOLIET      1       /* UTF-8 encode Joliet file names */

/* CD-ROM Format type */
enum ISO_FTYPE  { ISO_FTYPE_DEFAULT, ISO_FTYPE_9660, ISO_FTYPE_RRIP, ISO_FTYPE_ECMA };

#ifndef ISOFSMNT_ROOT
#define ISOFSMNT_ROOT   0
#endif

struct iso_mnt {
       int im_flags;
       int im_joliet_level;

       struct mount *im_mountp;
       dev_t im_dev;
       struct vnode *im_devvp;

       uid_t   im_uid;
       gid_t   im_gid;
       mode_t  im_fmask;
       mode_t  im_dmask;

       int logical_block_size;
       int im_bshift;
       int im_bmask;

       int volume_space_size;

       char root[ISODCL (157, 190)];
       int root_extent;
       int root_size;
       enum ISO_FTYPE  iso_ftype;

       int rr_skip;
       int rr_skip0;
};

#define VFSTOISOFS(mp)  ((struct iso_mnt *)((mp)->mnt_data))

#define cd9660_blkoff(imp, loc)         ((loc) & (imp)->im_bmask)
#define cd9660_lblktosize(imp, blk)     ((blk) << (imp)->im_bshift)
#define cd9660_lblkno(imp, loc) ((loc) >> (imp)->im_bshift)
#define cd9660_blksize(imp, ip, lbn)    ((imp)->logical_block_size)

#ifdef _KERNEL

VFS_PROTOS(cd9660);

#include <sys/mallocvar.h>
MALLOC_DECLARE(M_ISOFSMNT);

extern struct pool cd9660_node_pool;
extern int cd9660_utf8_joliet;

int cd9660_mountroot(void);

extern int (**cd9660_vnodeop_p)(void *);
extern int (**cd9660_specop_p)(void *);
extern int (**cd9660_fifoop_p)(void *);

ino_t isodirino(struct iso_directory_record *, struct iso_mnt *);
#endif /* _KERNEL */

int isochar(const u_char *, const u_char *, int, u_int16_t *);
int isofncmp(const u_char *, size_t, const u_char *, size_t, int);
void isofntrans(const u_char *, int, u_char *, u_short *, int, int, int, int);

#endif /* _ISOFS_CD9660_CD9660_EXTERN_H_ */