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@hpesjro.fc.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 #ifndef _UDF_FS_SB_H
  19 #define _UDF_FS_SB_H 1
  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         __u16   s_packet_len;
  33         struct buffer_head *s_spar_map[4];
  34 };
  35
  36 struct udf_virtual_data
  37 {
  38         __u32   s_num_entries;
  39         __u16   s_start_offset;
  40 };
  41
  42 struct udf_bitmap
  43 {
  44         __u32                   s_extLength;
  45         __u32                   s_extPosition;
  46         __u16                   s_nr_groups;
  47         struct buffer_head      **s_block_bitmap;
  48 };
  49
  50 struct udf_part_map
  51 {
  52         union
  53         {
  54                 struct udf_bitmap       *s_bitmap;
  55                 struct inode            *s_table;
  56         } s_uspace;
  57         union
  58         {
  59                 struct udf_bitmap       *s_bitmap;
  60                 struct inode            *s_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         __s32                   s_session;
  89         __u32                   s_anchor[4];
  90         __u32                   s_lastblock;
  91
  92         struct buffer_head      *s_lvidbh;
  93
  94         /* Default permissions */
  95         mode_t                  s_umask;
  96         gid_t                   s_gid;
  97         uid_t                   s_uid;
  98
  99         /* Root Info */
 100         struct timespec         s_recordtime;
 101
 102         /* Fileset Info */
 103         __u16                   s_serialnum;
 104
 105         /* highest UDF revision we have recorded to this media */
 106         __u16                   s_udfrev;
 107
 108         /* Miscellaneous flags */
 109         __u32                   s_flags;
 110
 111         /* Encoding info */
 112         struct nls_table        *s_nls_map;
 113
 114         /* VAT inode */
 115         struct inode            *s_vat;
 116 };
 117
 118 #endif /* _UDF_FS_SB_H */