tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
33static 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 */