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   1 #ifndef __LINUX_UDF_SB_H
   2 #define __LINUX_UDF_SB_H
   3
   4 #include <linux/mutex.h>
   5
   6 /* Since UDF 2.01 is ISO 13346 based... */
   7 #define UDF_SUPER_MAGIC                 0x15013346
   8
   9 #define UDF_MAX_READ_VERSION            0x0250
  10 #define UDF_MAX_WRITE_VERSION           0x0201
  11
  12 #define UDF_FLAG_USE_EXTENDED_FE        0
  13 #define UDF_VERS_USE_EXTENDED_FE        0x0200
  14 #define UDF_FLAG_USE_STREAMS            1
  15 #define UDF_VERS_USE_STREAMS            0x0200
  16 #define UDF_FLAG_USE_SHORT_AD           2
  17 #define UDF_FLAG_USE_AD_IN_ICB          3
  18 #define UDF_FLAG_USE_FILE_CTIME_EA      4
  19 #define UDF_FLAG_STRICT                 5
  20 #define UDF_FLAG_UNDELETE               6
  21 #define UDF_FLAG_UNHIDE                 7
  22 #define UDF_FLAG_VARCONV                8
  23 #define UDF_FLAG_NLS_MAP                9
  24 #define UDF_FLAG_UTF8                   10
  25 #define UDF_FLAG_UID_FORGET     11    /* save -1 for uid to disk */
  26 #define UDF_FLAG_UID_IGNORE     12    /* use sb uid instead of on disk uid */
  27 #define UDF_FLAG_GID_FORGET     13
  28 #define UDF_FLAG_GID_IGNORE     14
  29 #define UDF_FLAG_UID_SET        15
  30 #define UDF_FLAG_GID_SET        16
  31 #define UDF_FLAG_SESSION_SET    17
  32 #define UDF_FLAG_LASTBLOCK_SET  18
  33
  34 #define UDF_PART_FLAG_UNALLOC_BITMAP    0x0001
  35 #define UDF_PART_FLAG_UNALLOC_TABLE     0x0002
  36 #define UDF_PART_FLAG_FREED_BITMAP      0x0004
  37 #define UDF_PART_FLAG_FREED_TABLE       0x0008
  38 #define UDF_PART_FLAG_READ_ONLY         0x0010
  39 #define UDF_PART_FLAG_WRITE_ONCE        0x0020
  40 #define UDF_PART_FLAG_REWRITABLE        0x0040
  41 #define UDF_PART_FLAG_OVERWRITABLE      0x0080
  42
  43 #define UDF_MAX_BLOCK_LOADED    8
  44
  45 #define UDF_TYPE1_MAP15                 0x1511U
  46 #define UDF_VIRTUAL_MAP15               0x1512U
  47 #define UDF_VIRTUAL_MAP20               0x2012U
  48 #define UDF_SPARABLE_MAP15              0x1522U
  49 #define UDF_METADATA_MAP25              0x2511U
  50
  51 #define UDF_INVALID_MODE                ((mode_t)-1)
  52
  53 #pragma pack(1) /* XXX(hch): Why?  This file just defines in-core structures */
  54
  55 struct udf_meta_data {
  56         __u32   s_meta_file_loc;
  57         __u32   s_mirror_file_loc;
  58         __u32   s_bitmap_file_loc;
  59         __u32   s_alloc_unit_size;
  60         __u16   s_align_unit_size;
  61         __u8    s_dup_md_flag;
  62         struct inode *s_metadata_fe;
  63         struct inode *s_mirror_fe;
  64         struct inode *s_bitmap_fe;
  65 };
  66
  67 struct udf_sparing_data {
  68         __u16   s_packet_len;
  69         struct buffer_head *s_spar_map[4];
  70 };
  71
  72 struct udf_virtual_data {
  73         __u32   s_num_entries;
  74         __u16   s_start_offset;
  75 };
  76
  77 struct udf_bitmap {
  78         __u32                   s_extLength;
  79         __u32                   s_extPosition;
  80         __u16                   s_nr_groups;
  81         struct buffer_head      **s_block_bitmap;
  82 };
  83
  84 struct udf_part_map {
  85         union {
  86                 struct udf_bitmap       *s_bitmap;
  87                 struct inode            *s_table;
  88         } s_uspace;
  89         union {
  90                 struct udf_bitmap       *s_bitmap;
  91                 struct inode            *s_table;
  92         } s_fspace;
  93         __u32   s_partition_root;
  94         __u32   s_partition_len;
  95         __u16   s_partition_type;
  96         __u16   s_partition_num;
  97         union {
  98                 struct udf_sparing_data s_sparing;
  99                 struct udf_virtual_data s_virtual;
 100                 struct udf_meta_data s_metadata;
 101         } s_type_specific;
 102         __u32   (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
 103         __u16   s_volumeseqnum;
 104         __u16   s_partition_flags;
 105 };
 106
 107 #pragma pack()
 108
 109 struct udf_sb_info {
 110         struct udf_part_map     *s_partmaps;
 111         __u8                    s_volume_ident[32];
 112
 113         /* Overall info */
 114         __u16                   s_partitions;
 115         __u16                   s_partition;
 116
 117         /* Sector headers */
 118         __s32                   s_session;
 119         __u32                   s_anchor[3];
 120         __u32                   s_last_block;
 121
 122         struct buffer_head      *s_lvid_bh;
 123
 124         /* Default permissions */
 125         mode_t                  s_umask;
 126         gid_t                   s_gid;
 127         uid_t                   s_uid;
 128         mode_t                  s_fmode;
 129         mode_t                  s_dmode;
 130
 131         /* Root Info */
 132         struct timespec         s_record_time;
 133
 134         /* Fileset Info */
 135         __u16                   s_serial_number;
 136
 137         /* highest UDF revision we have recorded to this media */
 138         __u16                   s_udfrev;
 139
 140         /* Miscellaneous flags */
 141         __u32                   s_flags;
 142
 143         /* Encoding info */
 144         struct nls_table        *s_nls_map;
 145
 146         /* VAT inode */
 147         struct inode            *s_vat_inode;
 148
 149         struct mutex            s_alloc_mutex;
 150 };
 151
 152 static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
 153 {
 154         return sb->s_fs_info;
 155 }
 156
 157 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
 158
 159 int udf_compute_nr_groups(struct super_block *sb, u32 partition);
 160
 161 #define UDF_QUERY_FLAG(X,Y)                     ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
 162 #define UDF_SET_FLAG(X,Y)                       ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
 163 #define UDF_CLEAR_FLAG(X,Y)                     ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
 164
 165 #endif /* __LINUX_UDF_SB_H */