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 #include <asm/semaphore.h>
  22
  23 #pragma pack(1)
  24
  25 #define UDF_MAX_BLOCK_LOADED    8
  26
  27 #define UDF_TYPE1_MAP15                 0x1511U
  28 #define UDF_VIRTUAL_MAP15               0x1512U
  29 #define UDF_VIRTUAL_MAP20               0x2012U
  30 #define UDF_SPARABLE_MAP15              0x1522U
  31
  32 struct udf_sparing_data
  33 {
  34         __u16   s_packet_len;
  35         struct buffer_head *s_spar_map[4];
  36 };
  37
  38 struct udf_virtual_data
  39 {
  40         __u32   s_num_entries;
  41         __u16   s_start_offset;
  42 };
  43
  44 struct udf_bitmap
  45 {
  46         __u32                   s_extLength;
  47         __u32                   s_extPosition;
  48         __u16                   s_nr_groups;
  49         struct buffer_head      **s_block_bitmap;
  50 };
  51
  52 struct udf_part_map
  53 {
  54         union
  55         {
  56                 struct udf_bitmap       *s_bitmap;
  57                 struct inode            *s_table;
  58         } s_uspace;
  59         union
  60         {
  61                 struct udf_bitmap       *s_bitmap;
  62                 struct inode            *s_table;
  63         } s_fspace;
  64         __u32   s_partition_root;
  65         __u32   s_partition_len;
  66         __u16   s_partition_type;
  67         __u16   s_partition_num;
  68         union
  69         {
  70                 struct udf_sparing_data s_sparing;
  71                 struct udf_virtual_data s_virtual;
  72         } s_type_specific;
  73         __u32   (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
  74         __u16   s_volumeseqnum;
  75         __u16   s_partition_flags;
  76 };
  77
  78 #pragma pack()
  79
  80 struct udf_sb_info
  81 {
  82         struct udf_part_map     *s_partmaps;
  83         __u8                    s_volident[32];
  84
  85         /* Overall info */
  86         __u16                   s_partitions;
  87         __u16                   s_partition;
  88
  89         /* Sector headers */
  90         __s32                   s_session;
  91         __u32                   s_anchor[4];
  92         __u32                   s_lastblock;
  93
  94         struct buffer_head      *s_lvidbh;
  95
  96         /* Default permissions */
  97         mode_t                  s_umask;
  98         gid_t                   s_gid;
  99         uid_t                   s_uid;
 100
 101         /* Root Info */
 102         struct timespec         s_recordtime;
 103
 104         /* Fileset Info */
 105         __u16                   s_serialnum;
 106
 107         /* highest UDF revision we have recorded to this media */
 108         __u16                   s_udfrev;
 109
 110         /* Miscellaneous flags */
 111         __u32                   s_flags;
 112
 113         /* Encoding info */
 114         struct nls_table        *s_nls_map;
 115
 116         /* VAT inode */
 117         struct inode            *s_vat;
 118
 119         struct semaphore        s_alloc_sem;
 120 };
 121
 122 #endif /* _UDF_FS_SB_H */