include/linux/udf_fs_sb.h

   1 /*
   2  * udf_fs_sb.h
   3  *
   4  * This include file is for the Linux kernel/module.
   5  *
   6  * CONTACTS
   7  *      E-mail regarding any portion of the Linux UDF file system should be
   8  *      directed to the development team mailing list (run by majordomo):
   9  *              linux_udf@hootie.lvld.hp.com
  10  *
  11  * COPYRIGHT
  12  *      This file is distributed under the terms of the GNU General Public
  13  *      License (GPL). Copies of the GPL can be obtained from:
  14  *              ftp://prep.ai.mit.edu/pub/gnu/GPL
  15  *      Each contributing author retains all rights to their own work.
  16  */
  17
  18 #if !defined(_LINUX_UDF_FS_SB_H)
  19 #define _LINUX_UDF_FS_SB_H
  20
  21 #pragma pack(1)
  22
  23 #define UDF_MAX_BLOCK_LOADED    8
  24
  25 #define UDF_TYPE1_MAP15                 0x1511U
  26 #define UDF_VIRTUAL_MAP15               0x1512U
  27 #define UDF_VIRTUAL_MAP20               0x2012U
  28 #define UDF_SPARABLE_MAP15              0x1522U
  29
  30 struct udf_sparing_data
  31 {
  32         __u32   s_spar_loc[4];
  33         __u8    s_spar_pshift;
  34         __u8    s_spar_indexsize;
  35         __u32   *s_spar_map;
  36         union
  37         {
  38                 __u8    *s_spar_remap8;
  39                 __u16   *s_spar_remap16;
  40                 __u32   *s_spar_remap32;
  41         } s_spar_remap;
  42 };
  43
  44 struct udf_virtual_data
  45 {
  46         __u32   s_num_entries;
  47         __u16   s_start_offset;
  48 };
  49
  50 struct udf_part_map
  51 {
  52         union
  53         {
  54                 __u32                   bitmap;
  55                 struct inode    *table;
  56         }               s_uspace;
  57         union
  58         {
  59                 __u32                   bitmap;
  60                 struct inode    *table;
  61         }               s_fspace;
  62         __u32   s_partition_root;
  63         __u32   s_partition_len;
  64         __u16   s_partition_type;
  65         __u16   s_partition_num;
  66         union
  67         {
  68                 struct udf_sparing_data s_sparing;
  69                 struct udf_virtual_data s_virtual;
  70         } s_type_specific;
  71         __u32   (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
  72         __u16   s_volumeseqnum;
  73         __u16   s_partition_flags;
  74 };
  75
  76 #pragma pack()
  77
  78 struct udf_sb_info
  79 {
  80         struct udf_part_map *s_partmaps;
  81         __u8  s_volident[32];
  82
  83         /* Overall info */
  84         __u16 s_partitions;
  85         __u16 s_partition;
  86
  87         /* Sector headers */
  88         __u32 s_session;
  89         __u32 s_anchor[4];
  90         __u32 s_lastblock;
  91
  92         struct buffer_head *s_lvidbh;
  93
  94         __u16 s_loaded_block_bitmaps;
  95         __u32 s_block_bitmap_number[UDF_MAX_BLOCK_LOADED];
  96         struct buffer_head *s_block_bitmap[UDF_MAX_BLOCK_LOADED];
  97
  98         /* Default permissions */
  99         mode_t s_umask;
 100         gid_t s_gid;
 101         uid_t s_uid;
 102
 103         /* Root Info */
 104         time_t s_recordtime;
 105
 106         /* Fileset Info */
 107         __u16 s_serialnum;
 108
 109         /* highest UDF revision we have recorded to this media */
 110         __u16 s_udfrev;
 111
 112         /* Miscellaneous flags */
 113         __u32 s_flags;
 114
 115         /* VAT inode */
 116         struct inode    *s_vat;
 117 };
 118
 119 #endif /* !defined(_LINUX_UDF_FS_SB_H) */