1 #ifndef __LINUX_UDF_SB_H
2 #define __LINUX_UDF_SB_H
3 
4 #include <linux/mutex.h>
5 #include <linux/bitops.h>
6 
7 /* Since UDF 2.01 is ISO 13346 based... */
8 #define UDF_SUPER_MAGIC			0x15013346
9 
10 #define UDF_MAX_READ_VERSION		0x0250
11 #define UDF_MAX_WRITE_VERSION		0x0201
12 
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
35 
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
44 
45 #define UDF_MAX_BLOCK_LOADED	8
46 
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
52 
53 #define UDF_INVALID_MODE		((umode_t)-1)
54 
55 #pragma pack(1) /* XXX(hch): Why?  This file just defines in-core structures */
56 
57 #define MF_DUPLICATE_MD		0x01
58 #define MF_MIRROR_FE_LOADED	0x02
59 
60 struct udf_meta_data {
61 	__u32	s_meta_file_loc;
62 	__u32	s_mirror_file_loc;
63 	__u32	s_bitmap_file_loc;
64 	__u32	s_alloc_unit_size;
65 	__u16	s_align_unit_size;
66 	int	s_flags;
67 	struct inode *s_metadata_fe;
68 	struct inode *s_mirror_fe;
69 	struct inode *s_bitmap_fe;
70 };
71 
72 struct udf_sparing_data {
73 	__u16	s_packet_len;
74 	struct buffer_head *s_spar_map[4];
75 };
76 
77 struct udf_virtual_data {
78 	__u32	s_num_entries;
79 	__u16	s_start_offset;
80 };
81 
82 struct udf_bitmap {
83 	__u32			s_extLength;
84 	__u32			s_extPosition;
85 	int			s_nr_groups;
86 	struct buffer_head 	**s_block_bitmap;
87 };
88 
89 struct udf_part_map {
90 	union {
91 		struct udf_bitmap	*s_bitmap;
92 		struct inode		*s_table;
93 	} s_uspace;
94 	union {
95 		struct udf_bitmap	*s_bitmap;
96 		struct inode		*s_table;
97 	} s_fspace;
98 	__u32	s_partition_root;
99 	__u32	s_partition_len;
100 	__u16	s_partition_type;
101 	__u16	s_partition_num;
102 	union {
103 		struct udf_sparing_data s_sparing;
104 		struct udf_virtual_data s_virtual;
105 		struct udf_meta_data s_metadata;
106 	} s_type_specific;
107 	__u32	(*s_partition_func)(struct super_block *, __u32, __u16, __u32);
108 	__u16	s_volumeseqnum;
109 	__u16	s_partition_flags;
110 };
111 
112 #pragma pack()
113 
114 struct udf_sb_info {
115 	struct udf_part_map	*s_partmaps;
116 	__u8			s_volume_ident[32];
117 
118 	/* Overall info */
119 	__u16			s_partitions;
120 	__u16			s_partition;
121 
122 	/* Sector headers */
123 	__s32			s_session;
124 	__u32			s_anchor;
125 	__u32			s_last_block;
126 
127 	struct buffer_head	*s_lvid_bh;
128 
129 	/* Default permissions */
130 	umode_t			s_umask;
131 	gid_t			s_gid;
132 	uid_t			s_uid;
133 	umode_t			s_fmode;
134 	umode_t			s_dmode;
135 	/* Lock protecting consistency of above permission settings */
136 	rwlock_t		s_cred_lock;
137 
138 	/* Root Info */
139 	struct timespec		s_record_time;
140 
141 	/* Fileset Info */
142 	__u16			s_serial_number;
143 
144 	/* highest UDF revision we have recorded to this media */
145 	__u16			s_udfrev;
146 
147 	/* Miscellaneous flags */
148 	unsigned long		s_flags;
149 
150 	/* Encoding info */
151 	struct nls_table	*s_nls_map;
152 
153 	/* VAT inode */
154 	struct inode		*s_vat_inode;
155 
156 	struct mutex		s_alloc_mutex;
157 	/* Protected by s_alloc_mutex */
158 	unsigned int		s_lvid_dirty;
159 };
160 
UDF_SB(struct super_block * sb)161 static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
162 {
163 	return sb->s_fs_info;
164 }
165 
166 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
167 
168 int udf_compute_nr_groups(struct super_block *sb, u32 partition);
169 
UDF_QUERY_FLAG(struct super_block * sb,int flag)170 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
171 {
172 	return test_bit(flag, &UDF_SB(sb)->s_flags);
173 }
174 
UDF_SET_FLAG(struct super_block * sb,int flag)175 static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
176 {
177 	set_bit(flag, &UDF_SB(sb)->s_flags);
178 }
179 
UDF_CLEAR_FLAG(struct super_block * sb,int flag)180 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
181 {
182 	clear_bit(flag, &UDF_SB(sb)->s_flags);
183 }
184 
185 #endif /* __LINUX_UDF_SB_H */
186