[apple/xnu.git] / bsd / isofs / cd9660 / cd9660_vnops.c

/*
 * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*      $NetBSD: cd9660_vnops.c,v 1.22 1994/12/27 19:05:12 mycroft 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 (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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. 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_vnops.c      8.15 (Berkeley) 12/5/94
 *
 * HISTORY
 * 02-Feb-00    chw             Add cd9660_copyfile to return error
 * 29-Sep-98    djb             Add cd9660_getattrlist VOP for VDI support.
 * 15-sep-98    added cd9660_rmdir to do proper unlocking - chw
 * 12-aug-98    added cd9660_remove which will do proper unlocking - chw
 * 17-Feb-98    radar 1669467 - changed lock protocols to use the lock manager - chw
 * 22-Jan-98    radar 1669467 - ISO 9660 CD support - jwc
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/resourcevar.h>
#include <sys/kernel.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/kauth.h>
#include <sys/conf.h>
#include <miscfs/specfs/specdev.h>
#include <miscfs/fifofs/fifo.h>
#include <sys/malloc.h>
#include <sys/dir.h>
#include <sys/attr.h>
#include <vfs/vfs_support.h>
#include <vm/vm_kern.h>
#include <sys/ubc.h>
#include <sys/lock.h>
#include <sys/ubc_internal.h>
#include <sys/uio_internal.h>
#include <architecture/byte_order.h>

#include <vm/vm_map.h>
#include <vm/vm_kern.h>         /* kmem_alloc, kmem_free */

#include <isofs/cd9660/iso.h>
#include <isofs/cd9660/cd9660_node.h>
#include <isofs/cd9660/iso_rrip.h>

/*
 * Open called.
 *
 * Nothing to do.
 */
int
cd9660_open(__unused struct vnop_open_args *ap)
{
        return (0);
}

/*
 * Close called
 *
 * Update the times on the inode on writeable file systems.
 */
int
cd9660_close(__unused struct vnop_close_args *ap)
{
        return (0);
}

int
cd9660_getattr(struct vnop_getattr_args *ap)
{
        struct vnode *vp = ap->a_vp;
        register struct vnode_attr *vap = ap->a_vap;
        register struct iso_node *ip = VTOI(vp);

        VATTR_RETURN(vap, va_fsid,      ip->i_dev);
        VATTR_RETURN(vap, va_fileid,    ip->i_number);

        VATTR_RETURN(vap, va_mode,      ip->inode.iso_mode);
        VATTR_RETURN(vap, va_nlink,     ip->inode.iso_links);
        VATTR_RETURN(vap, va_uid,       ip->inode.iso_uid);
        VATTR_RETURN(vap, va_gid,       ip->inode.iso_gid);
        VATTR_RETURN(vap, va_access_time, ip->inode.iso_atime);
        VATTR_RETURN(vap, va_modify_time, ip->inode.iso_mtime);
        VATTR_RETURN(vap, va_change_time, ip->inode.iso_ctime);
        VATTR_RETURN(vap, va_rdev,      ip->inode.iso_rdev);

        VATTR_RETURN(vap, va_data_size, (off_t)ip->i_size);
        if (ip->i_size == 0 && (vap->va_mode & S_IFMT) == S_IFLNK) {
                struct vnop_readlink_args rdlnk;
                uio_t auio;
                char uio_buf[ UIO_SIZEOF(1) ];
                char *cp;

                MALLOC(cp, char *, MAXPATHLEN, M_TEMP, M_WAITOK);
                auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_READ, 
                                                                  &uio_buf[0], sizeof(uio_buf));
                uio_addiov(auio, CAST_USER_ADDR_T(cp), MAXPATHLEN);
                
                rdlnk.a_uio = auio;
                rdlnk.a_vp = ap->a_vp;
                rdlnk.a_context = ap->a_context;
                if (cd9660_readlink(&rdlnk) == 0)
                        // LP64todo - fix this!
                        VATTR_RETURN(vap, va_data_size, MAXPATHLEN - uio_resid(auio));
                FREE(cp, M_TEMP);
        }
        VATTR_RETURN(vap, va_flags, 0);
        VATTR_RETURN(vap, va_gen, 1);
        VATTR_RETURN(vap, va_iosize, ip->i_mnt->logical_block_size);
        VATTR_RETURN(vap, va_total_size, ip->i_size + ip->i_rsrcsize);

        return (0);
}


/*
 * Vnode op for reading.
 */
int
cd9660_read(struct vnop_read_args *ap)
{
        struct vnode *vp = ap->a_vp;
        register struct uio *uio = ap->a_uio;
        register struct iso_node *ip = VTOI(vp);
        register struct iso_mnt *imp;
        struct buf *bp;
        daddr_t lbn;
        daddr64_t rablock;
        off_t diff;
        int rasize, error = 0;
        int32_t size, n, on;

        if (uio_resid(uio) == 0)
                return (0);
        if (uio->uio_offset < 0)
                return (EINVAL);

        imp = ip->i_mnt;

        if (UBCINFOEXISTS(vp)) {
                /*
                 * Copy any part of the Apple Double header.
                 */
                if ((ip->i_flag & ISO_ASSOCIATED) && (uio->uio_offset < ADH_SIZE)) {
                        apple_double_header_t  header;
                        int bytes;

                        if (uio->uio_offset < sizeof(apple_double_header_t)) {
                                header.magic = APPLEDOUBLE_MAGIC;
                                header.version = APPLEDOUBLE_VERSION;
                                header.count = 2;
                                header.entries[0].entryID = APPLEDOUBLE_FINDERINFO;
                                header.entries[0].offset = offsetof(apple_double_header_t, finfo);
                                header.entries[0].length = 32;
                                header.entries[1].entryID = APPLEDOUBLE_RESFORK;
                                header.entries[1].offset = ADH_SIZE;
                                header.entries[1].length = ip->i_size - ADH_SIZE;
                                header.finfo.fdType = ip->i_FileType;
                                header.finfo.fdCreator = ip->i_Creator;
                                header.finfo.fdFlags = ip->i_FinderFlags;
                                header.finfo.fdLocation.v = -1;
                                header.finfo.fdLocation.h = -1;
                                header.finfo.fdReserved = 0;

                                bytes = min(uio_resid(uio), sizeof(apple_double_header_t) - uio->uio_offset);
                                error = uiomove(((char *) &header) + uio->uio_offset, bytes, uio);
                                if (error)
                                        return error;
                        }
                        if (uio_resid(uio) && uio->uio_offset < ADH_SIZE) {
                                caddr_t  buffer;

                                if (kmem_alloc(kernel_map, (vm_offset_t *)&buffer, ADH_SIZE)) {
                                        return (ENOMEM);
                                }       
                                bytes = min(uio_resid(uio), ADH_SIZE - uio->uio_offset);
                                error = uiomove(((char *) buffer) + uio->uio_offset, bytes, uio);
                                kmem_free(kernel_map, (vm_offset_t)buffer, ADH_SIZE);
                                if (error)
                                        return error;
                        }
                }
                if (uio_resid(uio) > 0)
                        error = cluster_read(vp, uio, (off_t)ip->i_size, 0);
        } else {

        do {
                lbn = lblkno(imp, uio->uio_offset);
                on = blkoff(imp, uio->uio_offset);
                n = min((u_int)(imp->logical_block_size - on),
                        uio_resid(uio));
                diff = (off_t)ip->i_size - uio->uio_offset;
                if (diff <= 0)
                        return (0);
                if (diff < n)
                        n = diff;
                size = blksize(imp, ip, lbn);
                rablock = (daddr64_t)lbn + 1;

                if (ip->i_lastr + 1 == lbn &&
                    lblktosize(imp, rablock) < ip->i_size) {
                        rasize = blksize(imp, ip, (daddr_t)rablock);
                        error = (int)buf_breadn(vp, (daddr64_t)((unsigned)lbn), size, &rablock,
                                       &rasize, 1, NOCRED, &bp);
                } else
                        error = (int)buf_bread(vp, (daddr64_t)((unsigned)lbn), size, NOCRED, &bp);

                ip->i_lastr = lbn;
                n = min(n, size - buf_resid(bp));
                if (error) {
                        buf_brelse(bp);
                        return (error);
                }

                error = uiomove((caddr_t)(buf_dataptr(bp) + on), (int)n, uio);
                if (n + on == imp->logical_block_size ||
                    uio->uio_offset == (off_t)ip->i_size)
                        buf_markaged(bp);
                buf_brelse(bp);
        } while (error == 0 && uio_resid(uio) > 0 && n != 0);
        }

        return (error);
}

int
cd9660_ioctl(__unused struct vnop_ioctl_args *ap)
{
        return (ENOTTY);
}

int
cd9660_select(__unused struct vnop_select_args *ap)
{
        /*
         * We should really check to see if I/O is possible.
         */
        return (1);
}

/*
 * Mmap a file
 *
 * NB Currently unsupported.
 */
int
cd9660_mmap(__unused struct vnop_mmap_args *ap)
{

        return (EINVAL);
}

/*
 * Structure for reading directories
 */
struct isoreaddir {
        struct dirent saveent;
        struct dirent current;
        off_t saveoff;
        off_t curroff;
        struct uio *uio;
        off_t uio_off;
        int eofflag;
//      u_long **cookies;
//      int *ncookies;
};

static int
iso_uiodir(struct isoreaddir *idp, struct dirent *dp, off_t off)
{
        int error;

        dp->d_name[dp->d_namlen] = 0;
        dp->d_reclen = DIRSIZ(dp);

        if (uio_resid(idp->uio) < dp->d_reclen) {
                idp->eofflag = 0;
                return (-1);
        }

#if 0
        if (idp->cookies) {
                if (*idp->ncookies <= 0) {
                        idp->eofflag = 0;
                        return (-1);
                }

                **idp->cookies++ = off;
                --*idp->ncookies;
        }
#endif

        if ( (error = uiomove( (caddr_t)dp, dp->d_reclen, idp->uio )) )
                return (error);
        idp->uio_off = off;
        return (0);
}

static int
iso_shipdir(struct isoreaddir *idp)
{
        struct dirent *dp;
        int cl, sl;
        int error;
        char *cname, *sname;

        cl = idp->current.d_namlen;
        cname = idp->current.d_name;

        dp = &idp->saveent;
        sname = dp->d_name;
        sl = dp->d_namlen;
        if (sl > 0) {
                if (sl != cl
                    || bcmp(sname,cname,sl)) {
                        if (idp->saveent.d_namlen) {
                                if ( (error = iso_uiodir(idp,&idp->saveent,idp->saveoff)) )
                                        return (error);
                                idp->saveent.d_namlen = 0;
                        }
                }
        }
        idp->current.d_reclen = DIRSIZ(&idp->current);
        idp->saveoff = idp->curroff;
        bcopy(&idp->current,&idp->saveent,idp->current.d_reclen);
        return (0);
}

/*
 * Vnode op for readdir
 *
 * Note that directories are sector aligned (2K) and
 * that an entry can cross a logical block but not
 * a sector.
 */
int
cd9660_readdir(struct vnop_readdir_args *ap)
{
        register struct uio *uio = ap->a_uio;
        off_t startingOffset = uio->uio_offset;
        size_t lost = 0;
        struct isoreaddir *idp;
        struct vnode *vdp = ap->a_vp;
        struct iso_node *dp;
        struct iso_mnt *imp;
        struct buf *bp = NULL;
        struct iso_directory_record *ep;
        int entryoffsetinblock;
        doff_t endsearch;
        uint32_t bmask;
        int error = 0;
        int reclen;
        u_short namelen;

        if (ap->a_flags & (VNODE_READDIR_EXTENDED | VNODE_READDIR_REQSEEKOFF))
                return (EINVAL);

        dp = VTOI(vdp);
        imp = dp->i_mnt;
        bmask = imp->im_sector_size - 1;

        MALLOC(idp, struct isoreaddir *, sizeof(*idp), M_TEMP, M_WAITOK);
        idp->saveent.d_namlen = 0;
        /*
         * XXX
         * Is it worth trying to figure out the type?
         */
        idp->saveent.d_type = idp->current.d_type = DT_UNKNOWN;
        idp->uio = uio;
        idp->eofflag = 1;
        idp->curroff = uio->uio_offset;

        if ((entryoffsetinblock = idp->curroff & bmask) &&
            (error = cd9660_blkatoff(vdp, SECTOFF(imp, idp->curroff), NULL, &bp))) {
                FREE(idp, M_TEMP);
                return (error);
        }
        endsearch = dp->i_size;

        while (idp->curroff < endsearch) {
                /*
                 * If offset is on a block boundary,
                 * read the next directory block.
                 * Release previous if it exists.
                 */
                if ((idp->curroff & bmask) == 0) {
                        if (bp != NULL)
                                buf_brelse(bp);
                        if ((error = cd9660_blkatoff(vdp, SECTOFF(imp, idp->curroff), NULL, &bp)))
                                break;
                        entryoffsetinblock = 0;
                }
                /*
                 * Get pointer to next entry.
                 */
                ep = (struct iso_directory_record *)
                        (buf_dataptr(bp) + entryoffsetinblock);

                reclen = isonum_711(ep->length);
                if (reclen == 0) {
                        /* skip to next block, if any */
                        idp->curroff =
                            (idp->curroff & ~bmask) + imp->im_sector_size;
                        continue;
                }

                if (reclen < ISO_DIRECTORY_RECORD_SIZE) {
                        error = EINVAL;
                        /* illegal entry, stop */
                        break;
                }

                if (entryoffsetinblock + reclen > imp->im_sector_size) {
                        error = EINVAL;
                        /* illegal directory, so stop looking */
                        break;
                }

                idp->current.d_namlen = isonum_711(ep->name_len);

                if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.d_namlen) {
                        error = EINVAL;
                        /* illegal entry, stop */
                        break;
                }

                /*
                 * Some poorly mastered discs have an incorrect directory
                 * file size.  If the '.' entry has a better size (bigger)
                 * then use that instead.
                 */
                if ((uio->uio_offset == 0) && (isonum_733(ep->size) > endsearch)) {
                        dp->i_size = endsearch = isonum_733(ep->size);
                }

                if ( isonum_711(ep->flags) & directoryBit )
                        idp->current.d_fileno = isodirino(ep, imp);
                else {
                        idp->current.d_fileno = ((daddr_t)buf_blkno(bp) << imp->im_bshift) +
                                                entryoffsetinblock;
                }

                idp->curroff += reclen;

                switch (imp->iso_ftype) {
                case ISO_FTYPE_RRIP:
                        cd9660_rrip_getname(ep,idp->current.d_name, &namelen,
                                           &idp->current.d_fileno,imp);
                        idp->current.d_namlen = (u_char)namelen;
                        if (idp->current.d_namlen)
                                error = iso_uiodir(idp,&idp->current,idp->curroff);
                        break;

                case ISO_FTYPE_JOLIET:
                        ucsfntrans((u_int16_t *)ep->name, idp->current.d_namlen,
                                   idp->current.d_name, &namelen,
                                   isonum_711(ep->flags) & directoryBit,
                                   isonum_711(ep->flags) & associatedBit);
                        idp->current.d_namlen = (u_char)namelen;
                        if (idp->current.d_namlen)
                                error = iso_uiodir(idp,&idp->current,idp->curroff);
                        break;

                default:        /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 */
                        strcpy(idp->current.d_name,"..");
                        switch (ep->name[0]) {
                        case 0:
                                idp->current.d_namlen = 1;
                                error = iso_uiodir(idp,&idp->current,idp->curroff);
                                break;
                        case 1:
                                idp->current.d_namlen = 2;
                                error = iso_uiodir(idp,&idp->current,idp->curroff);
                                break;
                        default:
                                isofntrans(ep->name,idp->current.d_namlen,
                                           idp->current.d_name, &namelen,
                                           imp->iso_ftype == ISO_FTYPE_9660,
                                           isonum_711(ep->flags) & associatedBit);
                                idp->current.d_namlen = (u_char)namelen;
                                if (imp->iso_ftype == ISO_FTYPE_DEFAULT)
                                        error = iso_shipdir(idp);
                                else
                                        error = iso_uiodir(idp,&idp->current,idp->curroff);
                                break;
                        }
                }
                if (error)
                        break;

                entryoffsetinblock += reclen;
        }

        if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) {
                idp->current.d_namlen = 0;
                error = iso_shipdir(idp);
        }
#if 0
        if (!error && ap->a_ncookies) {
                struct dirent *dirp, *dpstart;
                off_t bufferOffset;
                u_long *cookies;
                int ncookies;

                /*
                 * Only the NFS server uses cookies, and it loads the
                 * directory block into system space, so we can just look at
                 * it directly.
                 *
                 * We assume the entire transfer is done to a single contiguous buffer.
                 */
                if (UIO_SEG_IS_USER_SPACE(uio->uio_segflg) || uio->uio_iovcnt != 1)
                        panic("ufs_readdir: lost in space");
                
                /*
                 * Make a first pass over the buffer just generated,
                 * counting the number of entries:
                 */
                // LP64todo - fix this!
                dpstart = (struct dirent *) 
                        CAST_DOWN(caddr_t, (uio_iov_base(uio) - (uio->uio_offset - startingOffset)));
                for (dirp = dpstart, bufferOffset = startingOffset, ncookies = 0;
                     bufferOffset < uio->uio_offset; ) {
                        if (dirp->d_reclen == 0)
                                break;
                        bufferOffset += dirp->d_reclen;
                        ncookies++;
                        dirp = (struct dirent *)((caddr_t)dirp + dirp->d_reclen);
                }
                lost += uio->uio_offset - bufferOffset;
                uio->uio_offset = bufferOffset;
                
                /*
                 * Allocate a buffer to hold the cookies requested:
                 */
                MALLOC(cookies, u_long *, ncookies * sizeof(u_long), M_TEMP, M_WAITOK);
                *ap->a_ncookies = ncookies;
                *ap->a_cookies = cookies;

                /*
                 * Fill in the offsets for each entry in the buffer just allocated:
                 */
                for (bufferOffset = startingOffset, dirp = dpstart; bufferOffset < uio->uio_offset; ) {
                        *(cookies++) = bufferOffset;
                        bufferOffset += dirp->d_reclen;
                        dirp = (struct dirent *)((caddr_t)dirp + dirp->d_reclen);
                }
        }
#endif
        if (error < 0)
                error = 0;

        if (bp)
                buf_brelse (bp);

        uio->uio_offset = idp->uio_off;
        *ap->a_eofflag = idp->eofflag;

        FREE(idp, M_TEMP);

        return (error);
}

/*
 * Return target name of a symbolic link
 * Shouldn't we get the parent vnode and read the data from there?
 * This could eventually result in deadlocks in cd9660_lookup.
 * But otherwise the block read here is in the block buffer two times.
 */
typedef struct iso_directory_record ISODIR;
typedef struct iso_node             ISONODE;
typedef struct iso_mnt              ISOMNT;
int
cd9660_readlink(struct vnop_readlink_args *ap)
{
        ISONODE *ip;
        ISODIR  *dirp;
        ISOMNT  *imp;
        struct  buf *bp;
        struct  uio *uio;
        u_short symlen;
        int     error;
        char    *symname;

        ip  = VTOI(ap->a_vp);
        imp = ip->i_mnt;
        uio = ap->a_uio;

        if (imp->iso_ftype != ISO_FTYPE_RRIP)
                return (EINVAL);

        /*
         * Get parents directory record block that this inode included.
         */
        error = (int)buf_bread(imp->im_devvp,
                               (daddr64_t)((unsigned)(ip->i_number >> imp->im_bshift)),
                      imp->logical_block_size, NOCRED, &bp);
        if (error) {
                buf_brelse(bp);
                return (EINVAL);
        }

        /*
         * Setup the directory pointer for this inode
         */
        dirp = (ISODIR *)(buf_dataptr(bp) + (ip->i_number & imp->im_bmask));

        /*
         * Just make sure, we have a right one....
         *   1: Check not cross boundary on block
         */
        if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length)
            > imp->logical_block_size) {
                buf_brelse(bp);
                return (EINVAL);
        }

        /*
         * Now get a buffer
         * Abuse a namei buffer for now.
         */
        if (UIO_SEG_IS_USER_SPACE(uio->uio_segflg))
                MALLOC_ZONE(symname, char *, MAXPATHLEN, M_NAMEI, M_WAITOK);
        else
                // LP64todo - fix this!
                symname = CAST_DOWN(caddr_t, uio_iov_base(uio));
        
        /*
         * Ok, we just gathering a symbolic name in SL record.
         */
        if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) {
                if (UIO_SEG_IS_USER_SPACE(uio->uio_segflg))
                        FREE_ZONE(symname, MAXPATHLEN, M_NAMEI);
                buf_brelse(bp);
                return (EINVAL);
        }
        /*
         * Don't forget before you leave from home ;-)
         */
        buf_brelse(bp);

        /*
         * return with the symbolic name to caller's.
         */
        if (UIO_SEG_IS_USER_SPACE(uio->uio_segflg)) {
                error = uiomove(symname, symlen, uio);
                FREE_ZONE(symname, MAXPATHLEN, M_NAMEI);
                return (error);
        }
#if LP64KERN
        uio_setresid(uio, (uio_resid(uio) - symlen));
        uio_iov_len_add(uio, -((int64_t)symlen));
#else
        uio_setresid(uio, (uio_resid(uio) - symlen));
        uio_iov_len_add(uio, -((int)symlen));
#endif
        uio_iov_base_add(uio, symlen);
        return (0);
}


/*
 * prepare and issue the I/O
 */
int
cd9660_strategy(struct vnop_strategy_args *ap)
{
        buf_t   bp = ap->a_bp;
        vnode_t vp = buf_vnode(bp);
        struct iso_node *ip = VTOI(vp);

        return (buf_strategy(ip->i_devvp, ap));
}


/*
 * Return POSIX pathconf information applicable to cd9660 filesystems.
 */
int
cd9660_pathconf(struct vnop_pathconf_args *ap)
{

        switch (ap->a_name) {
        case _PC_LINK_MAX:
                *ap->a_retval = 1;
                return (0);
        case _PC_NAME_MAX:
                switch (VTOI(ap->a_vp)->i_mnt->iso_ftype) {
                case ISO_FTYPE_RRIP:
                        *ap->a_retval = ISO_RRIP_NAMEMAX;
                        break;
                case ISO_FTYPE_JOLIET:
                        *ap->a_retval = ISO_JOLIET_NAMEMAX;
                        break;
                default:
                        *ap->a_retval = ISO_NAMEMAX;
                }
                return (0);
        case _PC_PATH_MAX:
                *ap->a_retval = PATH_MAX;
                return (0);
        case _PC_PIPE_BUF:
                *ap->a_retval = PIPE_BUF;
                return (0);
        case _PC_CHOWN_RESTRICTED:
                *ap->a_retval = 1;
                return (0);
        case _PC_NO_TRUNC:
                *ap->a_retval = 1;
                return (0);
        default:
                return (EINVAL);
        }
        /* NOTREACHED */
}

/*
 * Unsupported operation
 */
int
cd9660_enotsupp(void)
{
        return (ENOTSUP);
}
/* Pagein. similar to read */
int
cd9660_pagein(struct vnop_pagein_args *ap)
{
        struct vnode *vp = ap->a_vp;
        upl_t pl = ap->a_pl;
        size_t size = ap->a_size;
        off_t f_offset = ap->a_f_offset;
        vm_offset_t pl_offset = ap->a_pl_offset;
        int flags  = ap->a_flags;
        register struct iso_node *ip = VTOI(vp);
        int error = 0;

        /*
         * Copy the Apple Double header.
         */
        if ((ip->i_flag & ISO_ASSOCIATED) && (f_offset == 0) && (size == ADH_SIZE)) {
                apple_double_header_t  header;
                kern_return_t  kret;
                vm_offset_t  ioaddr;

                kret = ubc_upl_map(pl, &ioaddr);
                if (kret != KERN_SUCCESS)
                        panic("cd9660_xa_pagein: ubc_upl_map error = %d", kret);
                ioaddr += pl_offset;
                bzero((caddr_t)ioaddr, ADH_SIZE);

                header.magic = APPLEDOUBLE_MAGIC;
                header.version = APPLEDOUBLE_VERSION;
                header.count = 2;
                header.entries[0].entryID = APPLEDOUBLE_FINDERINFO;
                header.entries[0].offset = offsetof(apple_double_header_t, finfo);
                header.entries[0].length = 32;
                header.entries[1].entryID = APPLEDOUBLE_RESFORK;
                header.entries[1].offset = ADH_SIZE;
                header.entries[1].length = ip->i_size - ADH_SIZE;
                header.finfo.fdType = ip->i_FileType;
                header.finfo.fdCreator = ip->i_Creator;
                header.finfo.fdFlags = ip->i_FinderFlags;
                header.finfo.fdLocation.v = -1;
                header.finfo.fdLocation.h = -1;
                header.finfo.fdReserved = 0;

                bcopy((caddr_t)&header, (caddr_t)ioaddr, sizeof(apple_double_header_t));

                kret = ubc_upl_unmap(pl);
                if (kret != KERN_SUCCESS)
                        panic("cd9660_xa_pagein: ubc_upl_unmap error = %d", kret);

                if ((flags & UPL_NOCOMMIT) == 0) {
                        ubc_upl_commit_range(pl, pl_offset, size, UPL_COMMIT_FREE_ON_EMPTY);
                }
        } else {
                /* check pageouts are for reg file only  and ubc info is present*/
                if  (UBCINVALID(vp))
                        panic("cd9660_pagein: Not a  VREG");
                UBCINFOCHECK("cd9660_pagein", vp);
        
                error = cluster_pagein(vp, pl, pl_offset, f_offset, size,
                                       (off_t)ip->i_size, flags);
        }
        return (error);
}

/*  
 * cd9660_remove - not possible to remove a file from iso cds
 *  
 * Locking policy: a_dvp and vp locked on entry, unlocked on exit
 */ 
int 
cd9660_remove(__unused struct vnop_remove_args *ap)
{   
    return (EROFS);
}   


/*  
 * cd9660_rmdir - not possible to remove a directory from iso cds
 *  
 * Locking policy: a_dvp and vp locked on entry, unlocked on exit
 */ 
int 
cd9660_rmdir(struct vnop_rmdir_args *ap)
{   
    (void) nop_rmdir(ap);
    return (EROFS);
}   

/*

#
#% getattrlist  vp      = = =
#
 vnop_getattrlist {
     IN struct vnode *vp;
     IN struct attrlist *alist;
     INOUT struct uio *uio;
     IN vfs_context_t context;
 };

 */
int
cd9660_getattrlist(struct vnop_getattrlist_args *ap)
{
    struct attrlist *alist = ap->a_alist;
    int fixedblocksize;
    int attrblocksize;
    int attrbufsize;
    void *attrbufptr;
    void *attrptr;
    void *varptr;
    int error = 0;

        if ((alist->bitmapcount != ATTR_BIT_MAP_COUNT) ||
        ((alist->commonattr & ~ATTR_CMN_VALIDMASK) != 0) ||
        ((alist->volattr & ~ATTR_VOL_VALIDMASK) != 0) ||
        ((alist->dirattr & ~ATTR_DIR_VALIDMASK) != 0) ||
        ((alist->fileattr & ~ATTR_FILE_VALIDMASK) != 0) ||
        ((alist->forkattr & ~ATTR_FORK_VALIDMASK) != 0)) {
                return EINVAL;
        };

        /* 
         * Requesting volume information requires setting the ATTR_VOL_INFO bit and
         * volume info requests are mutually exclusive with all other info requests:
         */
        if ((alist->volattr != 0) &&
                (((alist->volattr & ATTR_VOL_INFO) == 0) ||
                (alist->dirattr != 0) || 
                (alist->fileattr != 0) || 
                (alist->forkattr != 0) )) {
        return EINVAL;
        };

        /*
         * Reject requests for unsupported options for now:
         */
        if (alist->volattr & ATTR_VOL_MOUNTPOINT) return EINVAL;
        if (alist->commonattr & (ATTR_CMN_NAMEDATTRCOUNT | ATTR_CMN_NAMEDATTRLIST)) return EINVAL;
        if (alist->fileattr &
                (ATTR_FILE_FILETYPE |
                 ATTR_FILE_FORKCOUNT |
                 ATTR_FILE_FORKLIST |
                 ATTR_FILE_DATAEXTENTS |
                 ATTR_FILE_RSRCEXTENTS)) {
                return EINVAL;
        };


    fixedblocksize = attrcalcsize(alist);
    attrblocksize = fixedblocksize + (sizeof(uint32_t));                    /* uint32_t for length word */
    if (alist->commonattr & ATTR_CMN_NAME) attrblocksize += NAME_MAX;
    if (alist->commonattr & ATTR_CMN_NAMEDATTRLIST) attrblocksize += 0;                 /* XXX PPD */
    if (alist->volattr & ATTR_VOL_MOUNTPOINT) attrblocksize += PATH_MAX;
    if (alist->volattr & ATTR_VOL_NAME) attrblocksize += NAME_MAX;
    if (alist->fileattr & ATTR_FILE_FORKLIST) attrblocksize += 0;                               /* XXX PPD */

    attrbufsize = MIN(uio_resid(ap->a_uio), attrblocksize);
    MALLOC(attrbufptr, void *, attrblocksize, M_TEMP, M_WAITOK);
    attrptr = attrbufptr;
    *((uint32_t *)attrptr) = 0;                                                                 /* Set buffer length in case of errors */
    ++((uint32_t *)attrptr);                                                                            /* Reserve space for length field */
    varptr = ((char *)attrptr) + fixedblocksize;                                /* Point to variable-length storage */

        packattrblk(alist, ap->a_vp, &attrptr, &varptr);

    /* Store length of fixed + var block */
    *((uint32_t *)attrbufptr) = ((char*)varptr - (char*)attrbufptr);
    /* Don't copy out more data than was generated */
    attrbufsize = MIN(attrbufsize, (char*)varptr - (char*)attrbufptr);

    error = uiomove((caddr_t)attrbufptr, attrbufsize, ap->a_uio);

    FREE(attrbufptr, M_TEMP);

    return error;
}

/*
 * Make a RIFF file header for a CD-ROM XA media file.
 */
__private_extern__ void
cd9660_xa_init(struct iso_node *ip, struct iso_directory_record *isodir)
{
        uint32_t sectors;
        struct riff_header *header;
        u_char name_len;
        char *cdxa;
        
        MALLOC(header, struct riff_header *, sizeof(struct riff_header), M_TEMP, M_WAITOK);

        sectors = ip->i_size / 2048;

        strncpy(header->riff, "RIFF", 4);
        header->fileSize = NXSwapHostLongToLittle(sectors * CDXA_SECTOR_SIZE + sizeof(struct riff_header) - 8);
        strncpy(header->cdxa, "CDXA", 4);
        strncpy(header->fmt, "fmt ", 4);
        header->fmtSize = NXSwapHostLongToLittle(16);
        strncpy(header->data, "data", 4);
        header->dataSize = NXSwapHostLongToLittle(sectors * CDXA_SECTOR_SIZE);

        /*
         * Copy the CD-ROM XA extended directory information into the header.  As far as
         * I can tell, it's always 14 bytes in the directory record, but allocated 16 bytes
         * in the header (the last two being zeroed pad bytes).
         */
        name_len = isonum_711(isodir->name_len);
        cdxa = &isodir->name[name_len];
        if ((name_len & 0x01) == 0)
                ++cdxa;         /* Skip pad byte */
        bcopy(cdxa, header->fmtData, 14);
        header->fmtData[14] = 0;
        header->fmtData[15] = 0;

        /*
         * Point this i-node to the "whole sector" device instead of the normal
         * device.  This allows cd9660_strategy to be ignorant of the block
         * (sector) size.
         */
        ip->i_devvp = ip->i_mnt->phys_devvp;

        ip->i_size = sectors * CDXA_SECTOR_SIZE + sizeof(struct riff_header);
        ip->i_riff = header;
}

/*
 * Helper routine for vnop_read and vnop_pagein of CD-ROM XA multimedia files.
 * This routine determines the physical location of the file, then reads
 * sectors directly from the device into a buffer.  It also handles inserting
 * the RIFF header at the beginning of the file.
 *
 * Exactly one of buffer or uio must be non-zero.  It will either bcopy to
 * buffer, or uiomove via uio.
 *
 * XXX Should this code be using buf_breadn and ip->i_lastr to support single-block
 * read-ahead?  Should we try more aggressive read-ahead like cluster_io does?
 *
 * XXX This could be made to do larger I/O to the device (reading all the
 * whole sectors directly into the buffer).  That would make the code more
 * complex, and the current code only adds 2.5% overhead compared to reading
 * from the device directly (at least on my test machine).
 */
static int
cd9660_xa_read_common(
        struct vnode *vp,
        off_t offset,
        size_t amount,
        caddr_t buffer,
        struct uio *uio)
{
        struct iso_node *ip = VTOI(vp);
        struct buf *bp;
        off_t diff;             /* number of bytes from offset to file's EOF */
        daddr_t block;  /* physical disk block containing offset */
        off_t sect_off; /* starting offset into current sector */
        u_int count;    /* number of bytes to transfer in current block */
        int error=0;

        /*
         * Copy any part of the RIFF header.
         */
        if (offset < sizeof(struct riff_header)) {
                char *p;
                
                p = ((char *) ip->i_riff) + offset;
                count = min(amount, sizeof(struct riff_header) - offset);
                if (buffer) {
                        bcopy(p, buffer, count);
                        buffer += count;
                } else {
                        error = uiomove(p, count, uio);
                }
                amount -= count;
                offset += count;
        }
        if (error)
                return error;

        /*
         * Loop over (possibly partial) blocks to transfer.
         */
        while (error == 0 && amount > 0) {
                /*
                 * Determine number of bytes until EOF.  If we've hit
                 * EOF then return.
                 */
                diff = ip->i_size - offset;
                if (diff <= 0)
                        return 0;

                /* Get a block from the underlying device */
                block = ip->iso_start + (offset - sizeof(struct riff_header))/CDXA_SECTOR_SIZE;
                error = (int)buf_bread(ip->i_devvp, (daddr64_t)((unsigned)block), CDXA_SECTOR_SIZE, NOCRED, &bp);
                if (error) {
                        buf_brelse(bp);
                        return error;
                }
                if (buf_resid(bp)) {
                        printf("isofs: cd9660_xa_read_common: buf_bread didn't read full sector\n");
                        return EIO;
                }
                
                /* Figure out which part of the block to copy, and copy it */
                sect_off = (offset - sizeof(struct riff_header)) % CDXA_SECTOR_SIZE;
                count = min(CDXA_SECTOR_SIZE-sect_off, amount);
                if (diff < count)       /* Pin transfer amount to EOF */
                        count = diff;
                
                if (buffer) {
                        bcopy(CAST_DOWN(caddr_t, (buf_dataptr(bp)+sect_off)), buffer, count);
                        buffer += count;
                } else {
                        error = uiomove(CAST_DOWN(caddr_t, (buf_dataptr(bp)+sect_off)), count, uio);
                }
                amount -= count;
                offset += count;
                
                /*
                 * If we copied through the end of the block, or the end of file, then
                 * age the device block.  This is optimized for sequential access.
                 */
                if (sect_off+count == CDXA_SECTOR_SIZE || offset == (off_t)ip->i_size)
                        buf_markaged(bp);
                buf_brelse(bp);
        }

        return error;
}

/*
 * Read from a CD-ROM XA multimedia file.
 *
 * This uses the same common routine as pagein for doing the actual read
 * from the device.
 *
 * This routine doesn't do any caching beyond what the block device does.
 * Even then, cd9660_xa_read_common ages the blocks once we read up to
 * the end.
 *
 * We don't even take advantage if the file has been memory mapped and has
 * valid pages already (in which case we could just uiomove from the page
 * to the caller).  Since we're a read-only filesystem, there can't be
 * any cache coherency problems.  Multimedia files are expected to be
 * large and streamed anyway, so caching file contents probably isn't
 * important.
 */
int
cd9660_xa_read(struct vnop_read_args *ap)
{
        struct vnode *vp = ap->a_vp;
        register struct uio *uio = ap->a_uio;
        register struct iso_node *ip = VTOI(vp);
        off_t offset = uio->uio_offset;
        // LP64todo - fix this!
        size_t size = uio_resid(uio);

        /* Check for some obvious parameter problems */
        if (offset < 0)
                return EINVAL;
        if (size == 0)
                return 0;
        if (offset >= ip->i_size)
                return 0;

        /* Pin the size of the read to the file's EOF */
        if (offset + size > ip->i_size)
                size = ip->i_size - offset;

        return cd9660_xa_read_common(vp, offset, size, NULL, uio);
}

/*
 * Page in from a CD-ROM XA media file.
 *
 * Since our device block size isn't a power of two, we can't use
 * cluster_pagein.  Instead, we have to map the page and read into it.
 */
static int
cd9660_xa_pagein(struct vnop_pagein_args *ap)
{
        struct vnode *vp = ap->a_vp;
        upl_t pl = ap->a_pl;
        size_t size= ap->a_size;
        off_t f_offset = ap->a_f_offset;
        vm_offset_t pl_offset = ap->a_pl_offset;
        int flags  = ap->a_flags;
        register struct iso_node *ip = VTOI(vp);
        int error;
    kern_return_t kret;
    vm_offset_t ioaddr;

        /* check pageins are for reg file only  and ubc info is present*/
        if  (UBCINVALID(vp))
                panic("cd9660_xa_pagein: Not a  VREG");
        UBCINFOCHECK("cd9660_xa_pagein", vp);

        if (size <= 0)
                panic("cd9660_xa_pagein: size = %d", size);

        kret = ubc_upl_map(pl, &ioaddr);
        if (kret != KERN_SUCCESS)
                panic("cd9660_xa_pagein: ubc_upl_map error = %d", kret);

        ioaddr += pl_offset;

        /* Make sure pagein doesn't extend past EOF */
        if (f_offset + size > ip->i_size)
                size = ip->i_size - f_offset;   /* pin size to EOF */

        /* Read the data in using the underlying device */
        error = cd9660_xa_read_common(vp, f_offset, size, (caddr_t)ioaddr, NULL);
        
        /* Zero fill part of page past EOF */
        if (ap->a_size > size)
                bzero((caddr_t)ioaddr+size, ap->a_size-size);

        kret = ubc_upl_unmap(pl);
        if (kret != KERN_SUCCESS)
                panic("cd9660_xa_pagein: ubc_upl_unmap error = %d", kret);

        if ((flags & UPL_NOCOMMIT) == 0)
        {
                if (error)
                        ubc_upl_abort_range(pl, pl_offset, ap->a_size, UPL_ABORT_FREE_ON_EMPTY);
                else
                        ubc_upl_commit_range(pl, pl_offset, ap->a_size, UPL_COMMIT_FREE_ON_EMPTY);
        }
        
        return error;
}

/*
 * Global vfs data structures for isofs
 */
#define cd9660_create \
        ((int (*)(struct  vnop_create_args *))err_create)
#define cd9660_mknod ((int (*)(struct  vnop_mknod_args *))err_mknod)
#define cd9660_write ((int (*)(struct  vnop_write_args *))cd9660_enotsupp)
#define cd9660_fsync ((int (*)(struct  vnop_fsync_args *))nullop)
#define cd9660_rename \
        ((int (*)(struct  vnop_rename_args *))err_rename)
#define cd9660_copyfile \
        ((int (*)(struct  vnop_copyfile_args *))err_copyfile)
#define cd9660_link ((int (*)(struct  vnop_link_args *))err_link)
#define cd9660_mkdir ((int (*)(struct  vnop_mkdir_args *))err_mkdir)
#define cd9660_symlink \
        ((int (*)(struct vnop_symlink_args *))err_symlink)
#define cd9660_advlock \
        ((int (*)(struct vnop_advlock_args *))cd9660_enotsupp)
#define cd9660_bwrite \
        ((int (*)(struct  vnop_bwrite_args *))cd9660_enotsupp)
#define cd9660_pageout \
        ((int (*)(struct  vnop_pageout_args *))cd9660_enotsupp)
int cd9660_blktooff(struct vnop_blktooff_args *ap);
int cd9660_offtoblk(struct vnop_offtoblk_args *ap);
int cd9660_blockmap(struct vnop_blockmap_args *ap);

#define VOPFUNC int (*)(void *)
/*
 * Global vfs data structures for cd9660
 */
int (**cd9660_vnodeop_p)(void *);
struct vnodeopv_entry_desc cd9660_vnodeop_entries[] = {
        { &vnop_default_desc, (VOPFUNC)vn_default_error },
        { &vnop_lookup_desc, (VOPFUNC)cd9660_lookup },  /* lookup */
        { &vnop_create_desc, (VOPFUNC)cd9660_create },  /* create */
        { &vnop_mknod_desc, (VOPFUNC)cd9660_mknod },    /* mknod */
        { &vnop_open_desc, (VOPFUNC)cd9660_open },      /* open */
        { &vnop_close_desc, (VOPFUNC)cd9660_close },    /* close */
        { &vnop_getattr_desc, (VOPFUNC)cd9660_getattr },        /* getattr */
        { &vnop_read_desc, (VOPFUNC)cd9660_read },      /* read */
        { &vnop_write_desc, (VOPFUNC)cd9660_write },    /* write */
        { &vnop_ioctl_desc, (VOPFUNC)cd9660_ioctl },    /* ioctl */
        { &vnop_select_desc, (VOPFUNC)cd9660_select },  /* select */
        { &vnop_mmap_desc, (VOPFUNC)cd9660_mmap },      /* mmap */
        { &vnop_fsync_desc, (VOPFUNC)cd9660_fsync },    /* fsync */
        { &vnop_remove_desc, (VOPFUNC)cd9660_remove },  /* remove */
        { &vnop_link_desc, (VOPFUNC)cd9660_link },      /* link */
        { &vnop_rename_desc, (VOPFUNC)cd9660_rename },  /* rename */
        { &vnop_copyfile_desc, (VOPFUNC)cd9660_copyfile },/* copyfile */
        { &vnop_mkdir_desc, (VOPFUNC)cd9660_mkdir },    /* mkdir */
        { &vnop_rmdir_desc, (VOPFUNC)cd9660_rmdir },    /* rmdir */
        { &vnop_symlink_desc, (VOPFUNC)cd9660_symlink },        /* symlink */
        { &vnop_readdir_desc, (VOPFUNC)cd9660_readdir },        /* readdir */
        { &vnop_readlink_desc, (VOPFUNC)cd9660_readlink },/* readlink */
        { &vnop_inactive_desc, (VOPFUNC)cd9660_inactive },/* inactive */
        { &vnop_reclaim_desc, (VOPFUNC)cd9660_reclaim },        /* reclaim */
        { &vnop_strategy_desc, (VOPFUNC)cd9660_strategy },/* strategy */
        { &vnop_pathconf_desc, (VOPFUNC)cd9660_pathconf },/* pathconf */
        { &vnop_advlock_desc, (VOPFUNC)cd9660_advlock },        /* advlock */
        { &vnop_bwrite_desc, (VOPFUNC)vn_bwrite },
        { &vnop_pagein_desc, (VOPFUNC)cd9660_pagein },          /* Pagein */
        { &vnop_pageout_desc, (VOPFUNC)cd9660_pageout },                /* Pageout */
        { &vnop_getattrlist_desc, (VOPFUNC)cd9660_getattrlist },        /* getattrlist */
        { &vnop_blktooff_desc, (VOPFUNC)cd9660_blktooff },      /* blktooff */
        { &vnop_offtoblk_desc, (VOPFUNC)cd9660_offtoblk },      /* offtoblk */
        { &vnop_blockmap_desc, (VOPFUNC)cd9660_blockmap },              /* blockmap */
        { (struct vnodeop_desc*)NULL, (VOPFUNC)NULL }
};
struct vnodeopv_desc cd9660_vnodeop_opv_desc =
        { &cd9660_vnodeop_p, cd9660_vnodeop_entries };

/*
 * The VOP table for CD-ROM XA (media) files is almost the same
 * as for ordinary files, except for read, and pagein.
 * Note that cd9660_xa_read doesn't use cluster I/O, so blockmap
 * isn't needed, and isn't implemented.  Similarly, it doesn't
 * do buf_bread() on CD XA vnodes, so bmap, blktooff, offtoblk
 * aren't needed.
 */
int (**cd9660_cdxaop_p)(void *);
struct vnodeopv_entry_desc cd9660_cdxaop_entries[] = {
        { &vnop_default_desc, (VOPFUNC)vn_default_error },
        { &vnop_lookup_desc, (VOPFUNC)cd9660_lookup },  /* lookup */
        { &vnop_create_desc, (VOPFUNC)cd9660_create },  /* create */
        { &vnop_mknod_desc, (VOPFUNC)cd9660_mknod },    /* mknod */
        { &vnop_open_desc, (VOPFUNC)cd9660_open },      /* open */
        { &vnop_close_desc, (VOPFUNC)cd9660_close },    /* close */
        { &vnop_getattr_desc, (VOPFUNC)cd9660_getattr },        /* getattr */
        { &vnop_read_desc, (VOPFUNC)cd9660_xa_read },   /* read */
        { &vnop_write_desc, (VOPFUNC)cd9660_write },    /* write */
        { &vnop_ioctl_desc, (VOPFUNC)cd9660_ioctl },    /* ioctl */
        { &vnop_select_desc, (VOPFUNC)cd9660_select },  /* select */
        { &vnop_mmap_desc, (VOPFUNC)cd9660_mmap },      /* mmap */
        { &vnop_fsync_desc, (VOPFUNC)cd9660_fsync },    /* fsync */
        { &vnop_remove_desc, (VOPFUNC)cd9660_remove },  /* remove */
        { &vnop_link_desc, (VOPFUNC)cd9660_link },      /* link */
        { &vnop_rename_desc, (VOPFUNC)cd9660_rename },  /* rename */
        { &vnop_copyfile_desc, (VOPFUNC)cd9660_copyfile },/* copyfile */
        { &vnop_mkdir_desc, (VOPFUNC)cd9660_mkdir },    /* mkdir */
        { &vnop_rmdir_desc, (VOPFUNC)cd9660_rmdir },    /* rmdir */
        { &vnop_symlink_desc, (VOPFUNC)cd9660_symlink },        /* symlink */
        { &vnop_readdir_desc, (VOPFUNC)cd9660_readdir },        /* readdir */
        { &vnop_readlink_desc, (VOPFUNC)cd9660_readlink },/* readlink */
        { &vnop_inactive_desc, (VOPFUNC)cd9660_inactive },/* inactive */
        { &vnop_reclaim_desc, (VOPFUNC)cd9660_reclaim },        /* reclaim */
        { &vnop_strategy_desc, (VOPFUNC)cd9660_strategy },/* strategy */
        { &vnop_pathconf_desc, (VOPFUNC)cd9660_pathconf },/* pathconf */
        { &vnop_advlock_desc, (VOPFUNC)cd9660_advlock },        /* advlock */
        { &vnop_bwrite_desc, (VOPFUNC)vn_bwrite },
        { &vnop_pagein_desc, (VOPFUNC)cd9660_xa_pagein },               /* Pagein */
        { &vnop_pageout_desc, (VOPFUNC)cd9660_pageout },                /* Pageout */
        { &vnop_getattrlist_desc, (VOPFUNC)cd9660_getattrlist },        /* getattrlist */
        { (struct vnodeop_desc*)NULL, (VOPFUNC)NULL }
};
struct vnodeopv_desc cd9660_cdxaop_opv_desc =
        { &cd9660_cdxaop_p, cd9660_cdxaop_entries };

/*
 * Special device vnode ops
 */
int (**cd9660_specop_p)(void *);
struct vnodeopv_entry_desc cd9660_specop_entries[] = {
        { &vnop_default_desc, (VOPFUNC)vn_default_error },
        { &vnop_lookup_desc, (VOPFUNC)spec_lookup },    /* lookup */
        { &vnop_create_desc, (VOPFUNC)spec_create },    /* create */
        { &vnop_mknod_desc, (VOPFUNC)spec_mknod },      /* mknod */
        { &vnop_open_desc, (VOPFUNC)spec_open },                /* open */
        { &vnop_close_desc, (VOPFUNC)spec_close },      /* close */
        { &vnop_getattr_desc, (VOPFUNC)cd9660_getattr },        /* getattr */
        { &vnop_read_desc, (VOPFUNC)spec_read },                /* read */
        { &vnop_write_desc, (VOPFUNC)spec_write },      /* write */
        { &vnop_ioctl_desc, (VOPFUNC)spec_ioctl },      /* ioctl */
        { &vnop_select_desc, (VOPFUNC)spec_select },    /* select */
        { &vnop_mmap_desc, (VOPFUNC)spec_mmap },                /* mmap */
        { &vnop_fsync_desc, (VOPFUNC)spec_fsync },      /* fsync */
        { &vnop_remove_desc, (VOPFUNC)spec_remove },    /* remove */
        { &vnop_link_desc, (VOPFUNC)spec_link },                /* link */
        { &vnop_rename_desc, (VOPFUNC)spec_rename },    /* rename */
        { &vnop_mkdir_desc, (VOPFUNC)spec_mkdir },      /* mkdir */
        { &vnop_rmdir_desc, (VOPFUNC)spec_rmdir },      /* rmdir */
        { &vnop_symlink_desc, (VOPFUNC)spec_symlink },  /* symlink */
        { &vnop_readdir_desc, (VOPFUNC)spec_readdir },  /* readdir */
        { &vnop_readlink_desc, (VOPFUNC)spec_readlink },        /* readlink */
        { &vnop_inactive_desc, (VOPFUNC)cd9660_inactive },/* inactive */
        { &vnop_reclaim_desc, (VOPFUNC)cd9660_reclaim },        /* reclaim */
        { &vnop_strategy_desc, (VOPFUNC)spec_strategy },        /* strategy */
        { &vnop_pathconf_desc, (VOPFUNC)spec_pathconf },        /* pathconf */
        { &vnop_advlock_desc, (VOPFUNC)spec_advlock },  /* advlock */
        { &vnop_bwrite_desc, (VOPFUNC)vn_bwrite },
        { &vnop_devblocksize_desc, (VOPFUNC)spec_devblocksize }, /* devblocksize */
        { &vnop_pagein_desc, (VOPFUNC)cd9660_pagein },          /* Pagein */
        { &vnop_pageout_desc, (VOPFUNC)cd9660_pageout },                /* Pageout */
        { &vnop_blktooff_desc, (VOPFUNC)cd9660_blktooff },      /* blktooff */
        { &vnop_offtoblk_desc, (VOPFUNC)cd9660_offtoblk },      /* offtoblk */
        { &vnop_blockmap_desc, (VOPFUNC)cd9660_blockmap },              /* blockmap */
        { (struct vnodeop_desc*)NULL, (VOPFUNC)NULL }
};
struct vnodeopv_desc cd9660_specop_opv_desc =
        { &cd9660_specop_p, cd9660_specop_entries };

#if FIFO
int (**cd9660_fifoop_p)(void *);
struct vnodeopv_entry_desc cd9660_fifoop_entries[] = {
        { &vnop_default_desc, (VOPFUNC)vn_default_error },
        { &vnop_lookup_desc, (VOPFUNC)fifo_lookup },    /* lookup */
        { &vnop_create_desc, (VOPFUNC)fifo_create },    /* create */
        { &vnop_mknod_desc, (VOPFUNC)fifo_mknod },      /* mknod */
        { &vnop_open_desc, (VOPFUNC)fifo_open },                /* open */
        { &vnop_close_desc, (VOPFUNC)fifo_close },      /* close */
        { &vnop_getattr_desc, (VOPFUNC)cd9660_getattr },        /* getattr */
        { &vnop_read_desc, (VOPFUNC)fifo_read },                /* read */
        { &vnop_write_desc, (VOPFUNC)fifo_write },      /* write */
        { &vnop_ioctl_desc, (VOPFUNC)fifo_ioctl },      /* ioctl */
        { &vnop_select_desc, (VOPFUNC)fifo_select },    /* select */
        { &vnop_mmap_desc, (VOPFUNC)fifo_mmap },                /* mmap */
        { &vnop_fsync_desc, (VOPFUNC)fifo_fsync },      /* fsync */
        { &vnop_remove_desc, (VOPFUNC)fifo_remove },    /* remove */
        { &vnop_link_desc, (VOPFUNC)fifo_link } ,       /* link */
        { &vnop_rename_desc, (VOPFUNC)fifo_rename },    /* rename */
        { &vnop_mkdir_desc, (VOPFUNC)fifo_mkdir },      /* mkdir */
        { &vnop_rmdir_desc, (VOPFUNC)fifo_rmdir },      /* rmdir */
        { &vnop_symlink_desc, (VOPFUNC)fifo_symlink },  /* symlink */
        { &vnop_readdir_desc, (VOPFUNC)fifo_readdir },  /* readdir */
        { &vnop_readlink_desc, (VOPFUNC)fifo_readlink },        /* readlink */
        { &vnop_inactive_desc, (VOPFUNC)cd9660_inactive },/* inactive */
        { &vnop_reclaim_desc, (VOPFUNC)cd9660_reclaim },        /* reclaim */
        { &vnop_strategy_desc, (VOPFUNC)fifo_strategy },        /* strategy */
        { &vnop_pathconf_desc, (VOPFUNC)fifo_pathconf },        /* pathconf */
        { &vnop_advlock_desc, (VOPFUNC)fifo_advlock },  /* advlock */
        { &vnop_bwrite_desc, (VOPFUNC)vn_bwrite },
        { &vnop_pagein_desc, (VOPFUNC)cd9660_pagein },          /* Pagein */
        { &vnop_pageout_desc, (VOPFUNC)cd9660_pageout },                /* Pageout */
        { &vnop_blktooff_desc, (VOPFUNC)cd9660_blktooff },      /* blktooff */
        { &vnop_offtoblk_desc, (VOPFUNC)cd9660_offtoblk },      /* offtoblk */
        { (struct vnodeop_desc*)NULL, (VOPFUNC)NULL }
};
struct vnodeopv_desc cd9660_fifoop_opv_desc =
        { &cd9660_fifoop_p, cd9660_fifoop_entries };
#endif /* FIFO */