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TOMOYO Linux Cross Reference
Linux/fs/udf/udf_sb.h

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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 #define UDF_FLAG_BLOCKSIZE_SET  19
 34 
 35 #define UDF_PART_FLAG_UNALLOC_BITMAP    0x0001
 36 #define UDF_PART_FLAG_UNALLOC_TABLE     0x0002
 37 #define UDF_PART_FLAG_FREED_BITMAP      0x0004
 38 #define UDF_PART_FLAG_FREED_TABLE       0x0008
 39 #define UDF_PART_FLAG_READ_ONLY         0x0010
 40 #define UDF_PART_FLAG_WRITE_ONCE        0x0020
 41 #define UDF_PART_FLAG_REWRITABLE        0x0040
 42 #define UDF_PART_FLAG_OVERWRITABLE      0x0080
 43 
 44 #define UDF_MAX_BLOCK_LOADED    8
 45 
 46 #define UDF_TYPE1_MAP15                 0x1511U
 47 #define UDF_VIRTUAL_MAP15               0x1512U
 48 #define UDF_VIRTUAL_MAP20               0x2012U
 49 #define UDF_SPARABLE_MAP15              0x1522U
 50 #define UDF_METADATA_MAP25              0x2511U
 51 
 52 #define UDF_INVALID_MODE                ((mode_t)-1)
 53 
 54 #pragma pack(1) /* XXX(hch): Why?  This file just defines in-core structures */
 55 
 56 struct udf_meta_data {
 57         __u32   s_meta_file_loc;
 58         __u32   s_mirror_file_loc;
 59         __u32   s_bitmap_file_loc;
 60         __u32   s_alloc_unit_size;
 61         __u16   s_align_unit_size;
 62         __u8    s_dup_md_flag;
 63         struct inode *s_metadata_fe;
 64         struct inode *s_mirror_fe;
 65         struct inode *s_bitmap_fe;
 66 };
 67 
 68 struct udf_sparing_data {
 69         __u16   s_packet_len;
 70         struct buffer_head *s_spar_map[4];
 71 };
 72 
 73 struct udf_virtual_data {
 74         __u32   s_num_entries;
 75         __u16   s_start_offset;
 76 };
 77 
 78 struct udf_bitmap {
 79         __u32                   s_extLength;
 80         __u32                   s_extPosition;
 81         int                     s_nr_groups;
 82         struct buffer_head      **s_block_bitmap;
 83 };
 84 
 85 struct udf_part_map {
 86         union {
 87                 struct udf_bitmap       *s_bitmap;
 88                 struct inode            *s_table;
 89         } s_uspace;
 90         union {
 91                 struct udf_bitmap       *s_bitmap;
 92                 struct inode            *s_table;
 93         } s_fspace;
 94         __u32   s_partition_root;
 95         __u32   s_partition_len;
 96         __u16   s_partition_type;
 97         __u16   s_partition_num;
 98         union {
 99                 struct udf_sparing_data s_sparing;
100                 struct udf_virtual_data s_virtual;
101                 struct udf_meta_data s_metadata;
102         } s_type_specific;
103         __u32   (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
104         __u16   s_volumeseqnum;
105         __u16   s_partition_flags;
106 };
107 
108 #pragma pack()
109 
110 struct udf_sb_info {
111         struct udf_part_map     *s_partmaps;
112         __u8                    s_volume_ident[32];
113 
114         /* Overall info */
115         __u16                   s_partitions;
116         __u16                   s_partition;
117 
118         /* Sector headers */
119         __s32                   s_session;
120         __u32                   s_anchor;
121         __u32                   s_last_block;
122 
123         struct buffer_head      *s_lvid_bh;
124 
125         /* Default permissions */
126         mode_t                  s_umask;
127         gid_t                   s_gid;
128         uid_t                   s_uid;
129         mode_t                  s_fmode;
130         mode_t                  s_dmode;
131 
132         /* Root Info */
133         struct timespec         s_record_time;
134 
135         /* Fileset Info */
136         __u16                   s_serial_number;
137 
138         /* highest UDF revision we have recorded to this media */
139         __u16                   s_udfrev;
140 
141         /* Miscellaneous flags */
142         __u32                   s_flags;
143 
144         /* Encoding info */
145         struct nls_table        *s_nls_map;
146 
147         /* VAT inode */
148         struct inode            *s_vat_inode;
149 
150         struct mutex            s_alloc_mutex;
151         /* Protected by s_alloc_mutex */
152         unsigned int            s_lvid_dirty;
153 };
154 
155 static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
156 {
157         return sb->s_fs_info;
158 }
159 
160 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
161 
162 int udf_compute_nr_groups(struct super_block *sb, u32 partition);
163 
164 #define UDF_QUERY_FLAG(X,Y)                     ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
165 #define UDF_SET_FLAG(X,Y)                       ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
166 #define UDF_CLEAR_FLAG(X,Y)                     ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
167 
168 #endif /* __LINUX_UDF_SB_H */
169 

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