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[linux-2.6/next.git] / fs / udf / udf_sb.h
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1 #ifndef __LINUX_UDF_SB_H
2 #define __LINUX_UDF_SB_H
4 #include <linux/mutex.h>
5 #include <linux/bitops.h>
7 /* Since UDF 2.01 is ISO 13346 based... */
8 #define UDF_SUPER_MAGIC 0x15013346
10 #define UDF_MAX_READ_VERSION 0x0250
11 #define UDF_MAX_WRITE_VERSION 0x0201
13 #define UDF_FLAG_USE_EXTENDED_FE 0
14 #define UDF_VERS_USE_EXTENDED_FE 0x0200
15 #define UDF_FLAG_USE_STREAMS 1
16 #define UDF_VERS_USE_STREAMS 0x0200
17 #define UDF_FLAG_USE_SHORT_AD 2
18 #define UDF_FLAG_USE_AD_IN_ICB 3
19 #define UDF_FLAG_USE_FILE_CTIME_EA 4
20 #define UDF_FLAG_STRICT 5
21 #define UDF_FLAG_UNDELETE 6
22 #define UDF_FLAG_UNHIDE 7
23 #define UDF_FLAG_VARCONV 8
24 #define UDF_FLAG_NLS_MAP 9
25 #define UDF_FLAG_UTF8 10
26 #define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */
27 #define UDF_FLAG_UID_IGNORE 12 /* use sb uid instead of on disk uid */
28 #define UDF_FLAG_GID_FORGET 13
29 #define UDF_FLAG_GID_IGNORE 14
30 #define UDF_FLAG_UID_SET 15
31 #define UDF_FLAG_GID_SET 16
32 #define UDF_FLAG_SESSION_SET 17
33 #define UDF_FLAG_LASTBLOCK_SET 18
34 #define UDF_FLAG_BLOCKSIZE_SET 19
36 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
37 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
38 #define UDF_PART_FLAG_FREED_BITMAP 0x0004
39 #define UDF_PART_FLAG_FREED_TABLE 0x0008
40 #define UDF_PART_FLAG_READ_ONLY 0x0010
41 #define UDF_PART_FLAG_WRITE_ONCE 0x0020
42 #define UDF_PART_FLAG_REWRITABLE 0x0040
43 #define UDF_PART_FLAG_OVERWRITABLE 0x0080
45 #define UDF_MAX_BLOCK_LOADED 8
47 #define UDF_TYPE1_MAP15 0x1511U
48 #define UDF_VIRTUAL_MAP15 0x1512U
49 #define UDF_VIRTUAL_MAP20 0x2012U
50 #define UDF_SPARABLE_MAP15 0x1522U
51 #define UDF_METADATA_MAP25 0x2511U
53 #define UDF_INVALID_MODE ((mode_t)-1)
55 #pragma pack(1) /* XXX(hch): Why? This file just defines in-core structures */
57 struct udf_meta_data {
58 __u32 s_meta_file_loc;
59 __u32 s_mirror_file_loc;
60 __u32 s_bitmap_file_loc;
61 __u32 s_alloc_unit_size;
62 __u16 s_align_unit_size;
63 __u8 s_dup_md_flag;
64 struct inode *s_metadata_fe;
65 struct inode *s_mirror_fe;
66 struct inode *s_bitmap_fe;
69 struct udf_sparing_data {
70 __u16 s_packet_len;
71 struct buffer_head *s_spar_map[4];
74 struct udf_virtual_data {
75 __u32 s_num_entries;
76 __u16 s_start_offset;
79 struct udf_bitmap {
80 __u32 s_extLength;
81 __u32 s_extPosition;
82 __u16 s_nr_groups;
83 struct buffer_head **s_block_bitmap;
86 struct udf_part_map {
87 union {
88 struct udf_bitmap *s_bitmap;
89 struct inode *s_table;
90 } s_uspace;
91 union {
92 struct udf_bitmap *s_bitmap;
93 struct inode *s_table;
94 } s_fspace;
95 __u32 s_partition_root;
96 __u32 s_partition_len;
97 __u16 s_partition_type;
98 __u16 s_partition_num;
99 union {
100 struct udf_sparing_data s_sparing;
101 struct udf_virtual_data s_virtual;
102 struct udf_meta_data s_metadata;
103 } s_type_specific;
104 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
105 __u16 s_volumeseqnum;
106 __u16 s_partition_flags;
109 #pragma pack()
111 struct udf_sb_info {
112 struct udf_part_map *s_partmaps;
113 __u8 s_volume_ident[32];
115 /* Overall info */
116 __u16 s_partitions;
117 __u16 s_partition;
119 /* Sector headers */
120 __s32 s_session;
121 __u32 s_anchor;
122 __u32 s_last_block;
124 struct buffer_head *s_lvid_bh;
126 /* Default permissions */
127 mode_t s_umask;
128 gid_t s_gid;
129 uid_t s_uid;
130 mode_t s_fmode;
131 mode_t s_dmode;
132 /* Lock protecting consistency of above permission settings */
133 rwlock_t s_cred_lock;
135 /* Root Info */
136 struct timespec s_record_time;
138 /* Fileset Info */
139 __u16 s_serial_number;
141 /* highest UDF revision we have recorded to this media */
142 __u16 s_udfrev;
144 /* Miscellaneous flags */
145 unsigned long s_flags;
147 /* Encoding info */
148 struct nls_table *s_nls_map;
150 /* VAT inode */
151 struct inode *s_vat_inode;
153 struct mutex s_alloc_mutex;
154 /* Protected by s_alloc_mutex */
155 unsigned int s_lvid_dirty;
158 static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
160 return sb->s_fs_info;
163 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
165 int udf_compute_nr_groups(struct super_block *sb, u32 partition);
167 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
169 return test_bit(flag, &UDF_SB(sb)->s_flags);
172 static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
174 set_bit(flag, &UDF_SB(sb)->s_flags);
177 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
179 clear_bit(flag, &UDF_SB(sb)->s_flags);
182 #endif /* __LINUX_UDF_SB_H */