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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  
34  #define UDF_PART_FLAG_UNALLOC_BITMAP	0x0001
35  #define UDF_PART_FLAG_UNALLOC_TABLE	0x0002
36  #define UDF_PART_FLAG_FREED_BITMAP	0x0004
37  #define UDF_PART_FLAG_FREED_TABLE	0x0008
38  #define UDF_PART_FLAG_READ_ONLY		0x0010
39  #define UDF_PART_FLAG_WRITE_ONCE	0x0020
40  #define UDF_PART_FLAG_REWRITABLE	0x0040
41  #define UDF_PART_FLAG_OVERWRITABLE	0x0080
42  
43  #define UDF_MAX_BLOCK_LOADED	8
44  
45  #define UDF_TYPE1_MAP15			0x1511U
46  #define UDF_VIRTUAL_MAP15		0x1512U
47  #define UDF_VIRTUAL_MAP20		0x2012U
48  #define UDF_SPARABLE_MAP15		0x1522U
49  #define UDF_METADATA_MAP25		0x2511U
50  
51  #pragma pack(1) /* XXX(hch): Why?  This file just defines in-core structures */
52  
53  struct udf_meta_data {
54  	__u32	s_meta_file_loc;
55  	__u32	s_mirror_file_loc;
56  	__u32	s_bitmap_file_loc;
57  	__u32	s_alloc_unit_size;
58  	__u16	s_align_unit_size;
59  	__u8 	s_dup_md_flag;
60  	struct inode *s_metadata_fe;
61  	struct inode *s_mirror_fe;
62  	struct inode *s_bitmap_fe;
63  };
64  
65  struct udf_sparing_data {
66  	__u16	s_packet_len;
67  	struct buffer_head *s_spar_map[4];
68  };
69  
70  struct udf_virtual_data {
71  	__u32	s_num_entries;
72  	__u16	s_start_offset;
73  };
74  
75  struct udf_bitmap {
76  	__u32			s_extLength;
77  	__u32			s_extPosition;
78  	__u16			s_nr_groups;
79  	struct buffer_head 	**s_block_bitmap;
80  };
81  
82  struct udf_part_map {
83  	union {
84  		struct udf_bitmap	*s_bitmap;
85  		struct inode		*s_table;
86  	} s_uspace;
87  	union {
88  		struct udf_bitmap	*s_bitmap;
89  		struct inode		*s_table;
90  	} s_fspace;
91  	__u32	s_partition_root;
92  	__u32	s_partition_len;
93  	__u16	s_partition_type;
94  	__u16	s_partition_num;
95  	union {
96  		struct udf_sparing_data s_sparing;
97  		struct udf_virtual_data s_virtual;
98  		struct udf_meta_data s_metadata;
99  	} s_type_specific;
100  	__u32	(*s_partition_func)(struct super_block *, __u32, __u16, __u32);
101  	__u16	s_volumeseqnum;
102  	__u16	s_partition_flags;
103  };
104  
105  #pragma pack()
106  
107  struct udf_sb_info {
108  	struct udf_part_map	*s_partmaps;
109  	__u8			s_volume_ident[32];
110  
111  	/* Overall info */
112  	__u16			s_partitions;
113  	__u16			s_partition;
114  
115  	/* Sector headers */
116  	__s32			s_session;
117  	__u32			s_anchor[3];
118  	__u32			s_last_block;
119  
120  	struct buffer_head	*s_lvid_bh;
121  
122  	/* Default permissions */
123  	mode_t			s_umask;
124  	gid_t			s_gid;
125  	uid_t			s_uid;
126  
127  	/* Root Info */
128  	struct timespec		s_record_time;
129  
130  	/* Fileset Info */
131  	__u16			s_serial_number;
132  
133  	/* highest UDF revision we have recorded to this media */
134  	__u16			s_udfrev;
135  
136  	/* Miscellaneous flags */
137  	__u32			s_flags;
138  
139  	/* Encoding info */
140  	struct nls_table	*s_nls_map;
141  
142  	/* VAT inode */
143  	struct inode		*s_vat_inode;
144  
145  	struct mutex		s_alloc_mutex;
146  };
147  
UDF_SB(struct super_block * sb)148  static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
149  {
150  	return sb->s_fs_info;
151  }
152  
153  struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
154  
155  int udf_compute_nr_groups(struct super_block *sb, u32 partition);
156  
157  #define UDF_QUERY_FLAG(X,Y)			( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
158  #define UDF_SET_FLAG(X,Y)			( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
159  #define UDF_CLEAR_FLAG(X,Y)			( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
160  
161  #endif /* __LINUX_UDF_SB_H */
162