1 #ifndef __LINUX_UDF_SB_H
2 #define __LINUX_UDF_SB_H
4 /* Since UDF 2.01 is ISO 13346 based... */
5 #define UDF_SUPER_MAGIC 0x15013346
7 #define UDF_MAX_READ_VERSION 0x0201
8 #define UDF_MAX_WRITE_VERSION 0x0201
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 #define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */
24 #define UDF_FLAG_UID_IGNORE 12 /* use sb uid instead of on disk uid */
25 #define UDF_FLAG_GID_FORGET 13
26 #define UDF_FLAG_GID_IGNORE 14
27 #define UDF_FLAG_UID_SET 15
28 #define UDF_FLAG_GID_SET 16
30 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
31 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
32 #define UDF_PART_FLAG_FREED_BITMAP 0x0004
33 #define UDF_PART_FLAG_FREED_TABLE 0x0008
34 #define UDF_PART_FLAG_READ_ONLY 0x0010
35 #define UDF_PART_FLAG_WRITE_ONCE 0x0020
36 #define UDF_PART_FLAG_REWRITABLE 0x0040
37 #define UDF_PART_FLAG_OVERWRITABLE 0x0080
39 static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
44 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
46 #define UDF_SB_ALLOC_PARTMAPS(X,Y)\
48 struct udf_sb_info *sbi = UDF_SB(X);\
49 sbi->s_partmaps = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\
50 if (sbi->s_partmaps != NULL) {\
51 sbi->s_partitions = Y;\
52 memset(sbi->s_partmaps, 0x00, sizeof(struct udf_part_map) * Y);\
54 sbi->s_partitions = 0;\
55 udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\
59 #define UDF_SB_ALLOC_BITMAP(X,Y,Z)\
61 struct udf_sb_info *sbi = UDF_SB(X);\
62 int nr_groups = ((sbi->s_partmaps[(Y)].s_partition_len + (sizeof(struct spaceBitmapDesc) << 3) +\
63 ((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));\
64 int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
65 if (size <= PAGE_SIZE)\
66 sbi->s_partmaps[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\
68 sbi->s_partmaps[(Y)].Z.s_bitmap = vmalloc(size);\
69 if (sbi->s_partmaps[(Y)].Z.s_bitmap != NULL) {\
70 memset(sbi->s_partmaps[(Y)].Z.s_bitmap, 0x00, size);\
71 sbi->s_partmaps[(Y)].Z.s_bitmap->s_block_bitmap =\
72 (struct buffer_head **)(sbi->s_partmaps[(Y)].Z.s_bitmap + 1);\
73 sbi->s_partmaps[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\
75 udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);\
79 #define UDF_SB_FREE_BITMAP(X,Y,Z)\
82 int nr_groups = UDF_SB_BITMAP_NR_GROUPS(X,Y,Z);\
83 int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
84 for (i = 0; i < nr_groups; i++) {\
85 if (UDF_SB_BITMAP(X,Y,Z,i))\
86 brelse(UDF_SB_BITMAP(X,Y,Z,i));\
88 if (size <= PAGE_SIZE)\
89 kfree(UDF_SB(X)->s_partmaps[Y].Z.s_bitmap);\
91 vfree(UDF_SB(X)->s_partmaps[Y].Z.s_bitmap);\
94 #define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
95 #define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
96 #define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
98 #define UDF_SB_BITMAP(X,Y,Z,I) ( UDF_SB(X)->s_partmaps[(Y)].Z.s_bitmap->s_block_bitmap[I] )
99 #define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z) ( UDF_SB(X)->s_partmaps[(Y)].Z.s_bitmap->s_nr_groups )
101 #endif /* __LINUX_UDF_SB_H */