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1 #ifndef __LINUX_UDF_SB_H
2 #define __LINUX_UDF_SB_H
3
4 /* Since UDF 2.01 is ISO 13346 based... */
5 #define UDF_SUPER_MAGIC                 0x15013346
6
7 #define UDF_MAX_READ_VERSION            0x0201
8 #define UDF_MAX_WRITE_VERSION           0x0201
9
10 #define UDF_FLAG_USE_EXTENDED_FE        0
11 #define UDF_VERS_USE_EXTENDED_FE        0x0200
12 #define UDF_FLAG_USE_STREAMS            1
13 #define UDF_VERS_USE_STREAMS            0x0200
14 #define UDF_FLAG_USE_SHORT_AD           2
15 #define UDF_FLAG_USE_AD_IN_ICB          3
16 #define UDF_FLAG_USE_FILE_CTIME_EA      4
17 #define UDF_FLAG_STRICT                 5
18 #define UDF_FLAG_UNDELETE               6
19 #define UDF_FLAG_UNHIDE                 7
20 #define UDF_FLAG_VARCONV                8
21 #define UDF_FLAG_NLS_MAP                9
22 #define UDF_FLAG_UTF8                   10
23
24 #define UDF_PART_FLAG_UNALLOC_BITMAP    0x0001
25 #define UDF_PART_FLAG_UNALLOC_TABLE     0x0002
26 #define UDF_PART_FLAG_FREED_BITMAP      0x0004
27 #define UDF_PART_FLAG_FREED_TABLE       0x0008
28 #define UDF_PART_FLAG_READ_ONLY         0x0010
29 #define UDF_PART_FLAG_WRITE_ONCE        0x0020
30 #define UDF_PART_FLAG_REWRITABLE        0x0040
31 #define UDF_PART_FLAG_OVERWRITABLE      0x0080
32
33 static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
34 {
35         return sb->s_fs_info;
36 }
37
38 #define UDF_SB_FREE(X)\
39 {\
40         if (UDF_SB(X))\
41         {\
42                 kfree(UDF_SB_PARTMAPS(X));\
43                 UDF_SB_PARTMAPS(X) = NULL;\
44         }\
45 }
46
47 #define UDF_SB_ALLOC_PARTMAPS(X,Y)\
48 {\
49         UDF_SB_PARTMAPS(X) = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\
50         if (UDF_SB_PARTMAPS(X) != NULL)\
51         {\
52                 UDF_SB_NUMPARTS(X) = Y;\
53                 memset(UDF_SB_PARTMAPS(X), 0x00, sizeof(struct udf_part_map) * Y);\
54         }\
55         else\
56         {\
57                 UDF_SB_NUMPARTS(X) = 0;\
58                 udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\
59         }\
60 }
61
62 #define UDF_SB_ALLOC_BITMAP(X,Y,Z)\
63 {\
64         int nr_groups = ((UDF_SB_PARTLEN((X),(Y)) + (sizeof(struct spaceBitmapDesc) << 3) +\
65                 ((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));\
66         int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
67         if (size <= PAGE_SIZE)\
68                 UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\
69         else\
70                 UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = vmalloc(size);\
71         if (UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap != NULL)\
72         {\
73                 memset(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap, 0x00, size);\
74                 UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap =\
75                         (struct buffer_head **)(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap + 1);\
76                 UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\
77         }\
78         else\
79         {\
80                 udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);\
81         }\
82 }
83
84 #define UDF_SB_FREE_BITMAP(X,Y,Z)\
85 {\
86         int i;\
87         int nr_groups = UDF_SB_BITMAP_NR_GROUPS(X,Y,Z);\
88         int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
89         for (i=0; i<nr_groups; i++)\
90         {\
91                 if (UDF_SB_BITMAP(X,Y,Z,i))\
92                         udf_release_data(UDF_SB_BITMAP(X,Y,Z,i));\
93         }\
94         if (size <= PAGE_SIZE)\
95                 kfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
96         else\
97                 vfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
98 }
99
100 #define UDF_QUERY_FLAG(X,Y)                     ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
101 #define UDF_SET_FLAG(X,Y)                       ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
102 #define UDF_CLEAR_FLAG(X,Y)                     ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
103
104 #define UDF_UPDATE_UDFREV(X,Y)                  ( ((Y) > UDF_SB_UDFREV(X)) ? UDF_SB_UDFREV(X) = (Y) : UDF_SB_UDFREV(X) )
105
106 #define UDF_SB_PARTMAPS(X)                      ( UDF_SB(X)->s_partmaps )
107 #define UDF_SB_PARTTYPE(X,Y)                    ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_type )
108 #define UDF_SB_PARTROOT(X,Y)                    ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_root )
109 #define UDF_SB_PARTLEN(X,Y)                     ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_len )
110 #define UDF_SB_PARTVSN(X,Y)                     ( UDF_SB_PARTMAPS(X)[(Y)].s_volumeseqnum )
111 #define UDF_SB_PARTNUM(X,Y)                     ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_num )
112 #define UDF_SB_TYPESPAR(X,Y)                    ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_sparing )
113 #define UDF_SB_TYPEVIRT(X,Y)                    ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_virtual )
114 #define UDF_SB_PARTFUNC(X,Y)                    ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_func )
115 #define UDF_SB_PARTFLAGS(X,Y)                   ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_flags )
116 #define UDF_SB_BITMAP(X,Y,Z,I)                  ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap[I] )
117 #define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z)          ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups )
118
119 #define UDF_SB_VOLIDENT(X)                      ( UDF_SB(X)->s_volident )
120 #define UDF_SB_NUMPARTS(X)                      ( UDF_SB(X)->s_partitions )
121 #define UDF_SB_PARTITION(X)                     ( UDF_SB(X)->s_partition )
122 #define UDF_SB_SESSION(X)                       ( UDF_SB(X)->s_session )
123 #define UDF_SB_ANCHOR(X)                        ( UDF_SB(X)->s_anchor )
124 #define UDF_SB_LASTBLOCK(X)                     ( UDF_SB(X)->s_lastblock )
125 #define UDF_SB_LVIDBH(X)                        ( UDF_SB(X)->s_lvidbh )
126 #define UDF_SB_LVID(X)                          ( (struct logicalVolIntegrityDesc *)UDF_SB_LVIDBH(X)->b_data )
127 #define UDF_SB_LVIDIU(X)                        ( (struct logicalVolIntegrityDescImpUse *)&(UDF_SB_LVID(X)->impUse[le32_to_cpu(UDF_SB_LVID(X)->numOfPartitions) * 2 * sizeof(uint32_t)/sizeof(uint8_t)]) )
128
129 #define UDF_SB_UMASK(X)                         ( UDF_SB(X)->s_umask )
130 #define UDF_SB_GID(X)                           ( UDF_SB(X)->s_gid )
131 #define UDF_SB_UID(X)                           ( UDF_SB(X)->s_uid )
132 #define UDF_SB_RECORDTIME(X)                    ( UDF_SB(X)->s_recordtime )
133 #define UDF_SB_SERIALNUM(X)                     ( UDF_SB(X)->s_serialnum )
134 #define UDF_SB_UDFREV(X)                        ( UDF_SB(X)->s_udfrev )
135 #define UDF_SB_FLAGS(X)                         ( UDF_SB(X)->s_flags )
136 #define UDF_SB_VAT(X)                           ( UDF_SB(X)->s_vat )
137
138 #endif /* __LINUX_UDF_SB_H */