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1da177e4 LT |
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 | if (UDF_SB_PARTMAPS(X))\ | |
43 | kfree(UDF_SB_PARTMAPS(X));\ | |
44 | UDF_SB_PARTMAPS(X) = NULL;\ | |
45 | }\ | |
46 | } | |
47 | ||
48 | #define UDF_SB_ALLOC_PARTMAPS(X,Y)\ | |
49 | {\ | |
50 | UDF_SB_PARTMAPS(X) = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\ | |
51 | if (UDF_SB_PARTMAPS(X) != NULL)\ | |
52 | {\ | |
53 | UDF_SB_NUMPARTS(X) = Y;\ | |
54 | memset(UDF_SB_PARTMAPS(X), 0x00, sizeof(struct udf_part_map) * Y);\ | |
55 | }\ | |
56 | else\ | |
57 | {\ | |
58 | UDF_SB_NUMPARTS(X) = 0;\ | |
59 | udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\ | |
60 | }\ | |
61 | } | |
62 | ||
63 | #define UDF_SB_ALLOC_BITMAP(X,Y,Z)\ | |
64 | {\ | |
65 | int nr_groups = ((UDF_SB_PARTLEN((X),(Y)) + (sizeof(struct spaceBitmapDesc) << 3) +\ | |
66 | ((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));\ | |
67 | int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\ | |
68 | if (size <= PAGE_SIZE)\ | |
69 | UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\ | |
70 | else\ | |
71 | UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = vmalloc(size);\ | |
72 | if (UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap != NULL)\ | |
73 | {\ | |
74 | memset(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap, 0x00, size);\ | |
75 | UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap =\ | |
76 | (struct buffer_head **)(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap + 1);\ | |
77 | UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\ | |
78 | }\ | |
79 | else\ | |
80 | {\ | |
81 | udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);\ | |
82 | }\ | |
83 | } | |
84 | ||
85 | #define UDF_SB_FREE_BITMAP(X,Y,Z)\ | |
86 | {\ | |
87 | int i;\ | |
88 | int nr_groups = UDF_SB_BITMAP_NR_GROUPS(X,Y,Z);\ | |
89 | int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\ | |
90 | for (i=0; i<nr_groups; i++)\ | |
91 | {\ | |
92 | if (UDF_SB_BITMAP(X,Y,Z,i))\ | |
93 | udf_release_data(UDF_SB_BITMAP(X,Y,Z,i));\ | |
94 | }\ | |
95 | if (size <= PAGE_SIZE)\ | |
96 | kfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\ | |
97 | else\ | |
98 | vfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\ | |
99 | } | |
100 | ||
101 | #define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) ) | |
102 | #define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) ) | |
103 | #define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) ) | |
104 | ||
105 | #define UDF_UPDATE_UDFREV(X,Y) ( ((Y) > UDF_SB_UDFREV(X)) ? UDF_SB_UDFREV(X) = (Y) : UDF_SB_UDFREV(X) ) | |
106 | ||
107 | #define UDF_SB_PARTMAPS(X) ( UDF_SB(X)->s_partmaps ) | |
108 | #define UDF_SB_PARTTYPE(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_type ) | |
109 | #define UDF_SB_PARTROOT(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_root ) | |
110 | #define UDF_SB_PARTLEN(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_len ) | |
111 | #define UDF_SB_PARTVSN(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_volumeseqnum ) | |
112 | #define UDF_SB_PARTNUM(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_num ) | |
113 | #define UDF_SB_TYPESPAR(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_sparing ) | |
114 | #define UDF_SB_TYPEVIRT(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_virtual ) | |
115 | #define UDF_SB_PARTFUNC(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_func ) | |
116 | #define UDF_SB_PARTFLAGS(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_flags ) | |
117 | #define UDF_SB_BITMAP(X,Y,Z,I) ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap[I] ) | |
118 | #define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z) ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups ) | |
119 | ||
120 | #define UDF_SB_VOLIDENT(X) ( UDF_SB(X)->s_volident ) | |
121 | #define UDF_SB_NUMPARTS(X) ( UDF_SB(X)->s_partitions ) | |
122 | #define UDF_SB_PARTITION(X) ( UDF_SB(X)->s_partition ) | |
123 | #define UDF_SB_SESSION(X) ( UDF_SB(X)->s_session ) | |
124 | #define UDF_SB_ANCHOR(X) ( UDF_SB(X)->s_anchor ) | |
125 | #define UDF_SB_LASTBLOCK(X) ( UDF_SB(X)->s_lastblock ) | |
126 | #define UDF_SB_LVIDBH(X) ( UDF_SB(X)->s_lvidbh ) | |
127 | #define UDF_SB_LVID(X) ( (struct logicalVolIntegrityDesc *)UDF_SB_LVIDBH(X)->b_data ) | |
128 | #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)]) ) | |
129 | ||
130 | #define UDF_SB_UMASK(X) ( UDF_SB(X)->s_umask ) | |
131 | #define UDF_SB_GID(X) ( UDF_SB(X)->s_gid ) | |
132 | #define UDF_SB_UID(X) ( UDF_SB(X)->s_uid ) | |
133 | #define UDF_SB_RECORDTIME(X) ( UDF_SB(X)->s_recordtime ) | |
134 | #define UDF_SB_SERIALNUM(X) ( UDF_SB(X)->s_serialnum ) | |
135 | #define UDF_SB_UDFREV(X) ( UDF_SB(X)->s_udfrev ) | |
136 | #define UDF_SB_FLAGS(X) ( UDF_SB(X)->s_flags ) | |
137 | #define UDF_SB_VAT(X) ( UDF_SB(X)->s_vat ) | |
138 | ||
139 | #endif /* __LINUX_UDF_SB_H */ |