udf.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #define UDF_HASHTBLSIZE 100
   32 
   33 struct udf_node {
   34         struct vnode    *i_vnode;
   35         struct udf_mnt  *udfmp;
   36         ino_t           hash_id;
   37         long            diroff;
   38         struct file_entry *fentry;
   39 };
   40 
   41 struct udf_mnt {
   42         int                     im_flags;
   43         struct mount            *im_mountp;
   44         struct g_consumer       *im_cp;
   45         struct bufobj           *im_bo;
   46         struct cdev *im_dev;
   47         struct vnode            *im_devvp;
   48         int                     bsize;
   49         int                     bshift;
   50         int                     bmask;
   51         uint32_t                part_start;
   52         uint32_t                part_len;
   53         uint64_t                root_id;
   54         struct long_ad          root_icb;
   55         int                     p_sectors;
   56         int                     s_table_entries;
   57         struct udf_sparing_table *s_table;
   58         void                    *im_d2l;        /* disk->local iconv handle */
   59 #if 0
   60         void                    *im_l2d;        /* local->disk iconv handle */
   61 #endif
   62 };
   63 
   64 struct udf_dirstream {
   65         struct udf_node *node;
   66         struct udf_mnt  *udfmp;
   67         struct buf      *bp;
   68         uint8_t         *data;
   69         uint8_t         *buf;
   70         int             fsize;
   71         int             off;
   72         int             this_off;
   73         int             offset;
   74         int             size;
   75         int             error;
   76         int             fid_fragment;
   77 };
   78 
   79 struct ifid {
   80         u_short ifid_len;
   81         u_short ifid_pad;
   82         int     ifid_ino;
   83         long    ifid_start;
   84 };
   85 
   86 #define VFSTOUDFFS(mp)  ((struct udf_mnt *)((mp)->mnt_data))
   87 #define VTON(vp)        ((struct udf_node *)((vp)->v_data))
   88 
   89 /*
   90  * The block layer refers to things in terms of 512 byte blocks by default.
   91  * btodb() is expensive, so speed things up.
   92  * XXX Can the block layer be forced to use a different block size?
   93  */
   94 #define RDSECTOR(devvp, sector, size, bp) \
   95         bread(devvp, sector << (udfmp->bshift - DEV_BSHIFT), size, NOCRED, bp)
   96 
   97 MALLOC_DECLARE(M_UDFFENTRY);
   98 
   99 static __inline int
  100 udf_readdevblks(struct udf_mnt *udfmp, int sector, int size, struct buf **bp)
  101 {
  102         return (RDSECTOR(udfmp->im_devvp, sector,
  103                          (size + udfmp->bmask) & ~udfmp->bmask, bp));
  104 }
  105 
  106 /*
  107  * Produce a suitable file number from an ICB.  The passed in ICB is expected
  108  * to be in little endian (meaning that it hasn't been swapped for big
  109  * endian machines yet).
  110  * XXX If the fileno resolves to 0, we might be in big trouble.
  111  * XXX Assumes the ICB is a long_ad.  This struct is compatible with short_ad,
  112  *     but not ext_ad.
  113  */
  114 static __inline ino_t
  115 udf_getid(struct long_ad *icb)
  116 {
  117         return (le32toh(icb->loc.lb_num));
  118 }
  119 
  120 int udf_allocv(struct mount *, struct vnode **, struct thread *);
  121 int udf_checktag(struct desc_tag *, uint16_t);
  122 int udf_vget(struct mount *, ino_t, int, struct vnode **);
  123 
  124 extern uma_zone_t udf_zone_trans;
  125 extern uma_zone_t udf_zone_node;
  126 extern uma_zone_t udf_zone_ds;
  127 
  128 extern struct vop_vector udf_fifoops;

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FreeBSD/Linux Kernel Cross Reference sys/fs/udf/udf.h

FreeBSD/Linux Kernel Cross Reference
sys/fs/udf/udf.h