sys/vfs/isofs/cd9660/cd9660_node.h

root/sys/vfs/isofs/cd9660/cd9660_node.h
/*-
 * 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 (pace@blitz.com).  The Rock Ridge Extension
 * Support code is derived from software contributed to Berkeley
 * by Atsushi Murai (amurai@spec.co.jp).
 *
 * 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.
 *
 *      @(#)cd9660_node.h       8.6 (Berkeley) 5/14/95
 * $FreeBSD: src/sys/isofs/cd9660/cd9660_node.h,v 1.20 1999/12/29 04:54:37 peter Exp $
 */

#ifndef _ISOFS_CD9660_CD9660_NODE_H_
#define _ISOFS_CD9660_CD9660_NODE_H_

#include <sys/lockf.h>

/*
 * Theoretically, directories can be more than 2Gb in length,
 * however, in practice this seems unlikely. So, we define
 * the type doff_t as a long to keep down the cost of doing
 * lookup on a 32-bit machine. If you are porting to a 64-bit
 * architecture, you should make doff_t the same as off_t.
 */
#define doff_t  long

typedef struct  {
        struct timespec iso_atime;      /* time of last access */
        struct timespec iso_mtime;      /* time of last modification */
        struct timespec iso_ctime;      /* time file changed */
        u_short         iso_mode;       /* files access mode and type */
        uid_t           iso_uid;        /* owner user id */
        gid_t           iso_gid;        /* owner group id */
        short           iso_links;      /* links of file */
        dev_t           iso_rdev;       /* Major/Minor number for special */
} ISO_RRIP_INODE;


struct iso_node {
        struct  iso_node *i_next; /* hash chain */
        struct  vnode *i_vnode; /* vnode associated with this inode */
        struct  vnode *i_devvp; /* vnode for block I/O */
        u_long  i_flag;         /* see below */
        cdev_t  i_dev;          /* device where inode resides */
        ino_t   i_number;       /* the identity of the inode */
                                /* we use the actual starting block of the file */
        struct  iso_mnt *i_mnt; /* filesystem associated with this inode */
        struct  lockf i_lockf;  /* head of byte-level lock list */
        doff_t  i_endoff;       /* end of useful stuff in directory */
        doff_t  i_diroff;       /* offset in dir, where we found last entry */
        doff_t  i_offset;       /* offset of free space in directory */
        ino_t   i_ino;          /* inode number of found directory */

        unsigned long iso_extent;       /* extent of file */
        unsigned long i_size;
        unsigned long iso_start;        /* actual start of data of file (may be different */
                                        /* from iso_extent, if file has extended attributes) */
        ISO_RRIP_INODE  inode;
};

#define i_forw          i_chain[0]
#define i_back          i_chain[1]

/* flags */
#define IN_ACCESS       0x0020          /* inode access time to be updated */

#define VTOI(vp) ((struct iso_node *)(vp)->v_data)
#define ITOV(ip) ((ip)->i_vnode)

#ifdef _KERNEL

#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_ISOFSMNT);
MALLOC_DECLARE(M_ISOFSNODE);
#endif

struct buf;
struct vop_bmap_args;
struct vop_old_lookup_args;
struct vop_inactive_args;
struct vop_reclaim_args;

/*
 * Prototypes for ISOFS vnode operations
 */
int cd9660_lookup(struct vop_old_lookup_args *);
int cd9660_inactive(struct vop_inactive_args *);
int cd9660_reclaim(struct vop_reclaim_args *);
int cd9660_bmap(struct vop_bmap_args *);
int cd9660_blkatoff(struct vnode *vp, off_t offset, char **res, struct buf **bpp);
int cd9660_devblkatoff(struct vnode *vp, off_t offset, char **res, struct buf **bpp);

void cd9660_defattr(struct iso_directory_record *,
                        struct iso_node *, struct buf *, enum ISO_FTYPE);
void cd9660_deftstamp(struct iso_directory_record *,
                        struct iso_node *, struct buf *, enum ISO_FTYPE);
struct vnode *cd9660_ihashget(cdev_t, ino_t);
int cd9660_ihashins(struct iso_node *);
int cd9660_tstamp_conv7(u_char *, struct timespec *, enum ISO_FTYPE);
int cd9660_tstamp_conv17(u_char *, struct timespec *);

#endif /* _KERNEL */

#endif /* _ISOFS_CD9660_CD9660_NODE_H_ */
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