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
60struct 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
72struct udf_sparing_data {
73	__u16	s_packet_len;
74	struct buffer_head *s_spar_map[4];
75};
76
77struct udf_virtual_data {
78	__u32	s_num_entries;
79	__u16	s_start_offset;
80};
81
82struct udf_bitmap {
83	__u32			s_extPosition;
84	int			s_nr_groups;
85	struct buffer_head 	*s_block_bitmap[0];
86};
87
88struct udf_part_map {
89	union {
90		struct udf_bitmap	*s_bitmap;
91		struct inode		*s_table;
92	} s_uspace;
93	union {
94		struct udf_bitmap	*s_bitmap;
95		struct inode		*s_table;
96	} s_fspace;
97	__u32	s_partition_root;
98	__u32	s_partition_len;
99	__u16	s_partition_type;
100	__u16	s_partition_num;
101	union {
102		struct udf_sparing_data s_sparing;
103		struct udf_virtual_data s_virtual;
104		struct udf_meta_data s_metadata;
105	} s_type_specific;
106	__u32	(*s_partition_func)(struct super_block *, __u32, __u16, __u32);
107	__u16	s_volumeseqnum;
108	__u16	s_partition_flags;
109};
110
111#pragma pack()
112
113struct udf_sb_info {
114	struct udf_part_map	*s_partmaps;
115	__u8			s_volume_ident[32];
116
117	/* Overall info */
118	__u16			s_partitions;
119	__u16			s_partition;
120
121	/* Sector headers */
122	__s32			s_session;
123	__u32			s_anchor;
124	__u32			s_last_block;
125
126	struct buffer_head	*s_lvid_bh;
127
128	/* Default permissions */
129	umode_t			s_umask;
130	kgid_t			s_gid;
131	kuid_t			s_uid;
132	umode_t			s_fmode;
133	umode_t			s_dmode;
134	/* Lock protecting consistency of above permission settings */
135	rwlock_t		s_cred_lock;
136
137	/* Root Info */
138	struct timespec		s_record_time;
139
140	/* Fileset Info */
141	__u16			s_serial_number;
142
143	/* highest UDF revision we have recorded to this media */
144	__u16			s_udfrev;
145
146	/* Miscellaneous flags */
147	unsigned long		s_flags;
148
149	/* Encoding info */
150	struct nls_table	*s_nls_map;
151
152	/* VAT inode */
153	struct inode		*s_vat_inode;
154
155	struct mutex		s_alloc_mutex;
156	/* Protected by s_alloc_mutex */
157	unsigned int		s_lvid_dirty;
158};
159
160static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
161{
162	return sb->s_fs_info;
163}
164
165struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
166
167int udf_compute_nr_groups(struct super_block *sb, u32 partition);
168
169static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
170{
171	return test_bit(flag, &UDF_SB(sb)->s_flags);
172}
173
174static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
175{
176	set_bit(flag, &UDF_SB(sb)->s_flags);
177}
178
179static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
180{
181	clear_bit(flag, &UDF_SB(sb)->s_flags);
182}
183
184#endif /* __LINUX_UDF_SB_H */
185