1#ifndef __LINUX_UDF_SB_H
2#define __LINUX_UDF_SB_H
3
4#include <linux/mutex.h>
5
6/* Since UDF 2.01 is ISO 13346 based... */
7#define UDF_SUPER_MAGIC			0x15013346
8
9#define UDF_MAX_READ_VERSION		0x0250
10#define UDF_MAX_WRITE_VERSION		0x0201
11
12#define UDF_FLAG_USE_EXTENDED_FE	0
13#define UDF_VERS_USE_EXTENDED_FE	0x0200
14#define UDF_FLAG_USE_STREAMS		1
15#define UDF_VERS_USE_STREAMS		0x0200
16#define UDF_FLAG_USE_SHORT_AD		2
17#define UDF_FLAG_USE_AD_IN_ICB		3
18#define UDF_FLAG_USE_FILE_CTIME_EA	4
19#define UDF_FLAG_STRICT			5
20#define UDF_FLAG_UNDELETE		6
21#define UDF_FLAG_UNHIDE			7
22#define UDF_FLAG_VARCONV		8
23#define UDF_FLAG_NLS_MAP		9
24#define UDF_FLAG_UTF8			10
25#define UDF_FLAG_UID_FORGET     11    /* save -1 for uid to disk */
26#define UDF_FLAG_UID_IGNORE     12    /* use sb uid instead of on disk uid */
27#define UDF_FLAG_GID_FORGET     13
28#define UDF_FLAG_GID_IGNORE     14
29#define UDF_FLAG_UID_SET	15
30#define UDF_FLAG_GID_SET	16
31#define UDF_FLAG_SESSION_SET	17
32#define UDF_FLAG_LASTBLOCK_SET	18
33#define UDF_FLAG_BLOCKSIZE_SET	19
34
35#define UDF_PART_FLAG_UNALLOC_BITMAP	0x0001
36#define UDF_PART_FLAG_UNALLOC_TABLE	0x0002
37#define UDF_PART_FLAG_FREED_BITMAP	0x0004
38#define UDF_PART_FLAG_FREED_TABLE	0x0008
39#define UDF_PART_FLAG_READ_ONLY		0x0010
40#define UDF_PART_FLAG_WRITE_ONCE	0x0020
41#define UDF_PART_FLAG_REWRITABLE	0x0040
42#define UDF_PART_FLAG_OVERWRITABLE	0x0080
43
44#define UDF_MAX_BLOCK_LOADED	8
45
46#define UDF_TYPE1_MAP15			0x1511U
47#define UDF_VIRTUAL_MAP15		0x1512U
48#define UDF_VIRTUAL_MAP20		0x2012U
49#define UDF_SPARABLE_MAP15		0x1522U
50#define UDF_METADATA_MAP25		0x2511U
51
52#define UDF_INVALID_MODE		((mode_t)-1)
53
54#pragma pack(1)
55
56struct udf_meta_data {
57	__u32	s_meta_file_loc;
58	__u32	s_mirror_file_loc;
59	__u32	s_bitmap_file_loc;
60	__u32	s_alloc_unit_size;
61	__u16	s_align_unit_size;
62	__u8 	s_dup_md_flag;
63	struct inode *s_metadata_fe;
64	struct inode *s_mirror_fe;
65	struct inode *s_bitmap_fe;
66};
67
68struct udf_sparing_data {
69	__u16	s_packet_len;
70	struct buffer_head *s_spar_map[4];
71};
72
73struct udf_virtual_data {
74	__u32	s_num_entries;
75	__u16	s_start_offset;
76};
77
78struct udf_bitmap {
79	__u32			s_extLength;
80	__u32			s_extPosition;
81	__u16			s_nr_groups;
82	struct buffer_head 	**s_block_bitmap;
83};
84
85struct udf_part_map {
86	union {
87		struct udf_bitmap	*s_bitmap;
88		struct inode		*s_table;
89	} s_uspace;
90	union {
91		struct udf_bitmap	*s_bitmap;
92		struct inode		*s_table;
93	} s_fspace;
94	__u32	s_partition_root;
95	__u32	s_partition_len;
96	__u16	s_partition_type;
97	__u16	s_partition_num;
98	union {
99		struct udf_sparing_data s_sparing;
100		struct udf_virtual_data s_virtual;
101		struct udf_meta_data s_metadata;
102	} s_type_specific;
103	__u32	(*s_partition_func)(struct super_block *, __u32, __u16, __u32);
104	__u16	s_volumeseqnum;
105	__u16	s_partition_flags;
106};
107
108#pragma pack()
109
110struct udf_sb_info {
111	struct udf_part_map	*s_partmaps;
112	__u8			s_volume_ident[32];
113
114	/* Overall info */
115	__u16			s_partitions;
116	__u16			s_partition;
117
118	/* Sector headers */
119	__s32			s_session;
120	__u32			s_anchor;
121	__u32			s_last_block;
122
123	struct buffer_head	*s_lvid_bh;
124
125	/* Default permissions */
126	mode_t			s_umask;
127	gid_t			s_gid;
128	uid_t			s_uid;
129	mode_t			s_fmode;
130	mode_t			s_dmode;
131
132	/* Root Info */
133	struct timespec		s_record_time;
134
135	/* Fileset Info */
136	__u16			s_serial_number;
137
138	/* highest UDF revision we have recorded to this media */
139	__u16			s_udfrev;
140
141	/* Miscellaneous flags */
142	__u32			s_flags;
143
144	/* Encoding info */
145	struct nls_table	*s_nls_map;
146
147	/* VAT inode */
148	struct inode		*s_vat_inode;
149
150	struct mutex		s_alloc_mutex;
151	/* Protected by s_alloc_mutex */
152	unsigned int		s_lvid_dirty;
153};
154
155static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
156{
157	return sb->s_fs_info;
158}
159
160struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
161
162int udf_compute_nr_groups(struct super_block *sb, u32 partition);
163
164#define UDF_QUERY_FLAG(X,Y)			( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
165#define UDF_SET_FLAG(X,Y)			( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
166#define UDF_CLEAR_FLAG(X,Y)			( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
167
168#endif /* __LINUX_UDF_SB_H */
169