Root/fs/udf/udfdecl.h

1#ifndef __UDF_DECL_H
2#define __UDF_DECL_H
3
4#include "ecma_167.h"
5#include "osta_udf.h"
6
7#include <linux/fs.h>
8#include <linux/types.h>
9#include <linux/buffer_head.h>
10#include <linux/udf_fs_i.h>
11
12#include "udf_sb.h"
13#include "udfend.h"
14#include "udf_i.h"
15
16#define UDF_PREALLOCATE
17#define UDF_DEFAULT_PREALLOC_BLOCKS 8
18
19#undef UDFFS_DEBUG
20
21#ifdef UDFFS_DEBUG
22#define udf_debug(f, a...) \
23do { \
24    printk(KERN_DEBUG "UDF-fs DEBUG %s:%d:%s: ", \
25        __FILE__, __LINE__, __func__); \
26    printk(f, ##a); \
27} while (0)
28#else
29#define udf_debug(f, a...) /**/
30#endif
31
32#define udf_info(f, a...) \
33    printk(KERN_INFO "UDF-fs INFO " f, ##a);
34
35
36#define udf_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) )
37#define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) )
38
39#define UDF_EXTENT_LENGTH_MASK 0x3FFFFFFF
40#define UDF_EXTENT_FLAG_MASK 0xC0000000
41
42#define UDF_NAME_PAD 4
43#define UDF_NAME_LEN 256
44#define UDF_PATH_LEN 1023
45
46static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
47{
48    struct udf_inode_info *iinfo = UDF_I(inode);
49    if (iinfo->i_use)
50        return sizeof(struct unallocSpaceEntry);
51    else if (iinfo->i_efe)
52        return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr;
53    else
54        return sizeof(struct fileEntry) + iinfo->i_lenEAttr;
55}
56
57static inline size_t udf_ext0_offset(struct inode *inode)
58{
59    if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
60        return udf_file_entry_alloc_offset(inode);
61    else
62        return 0;
63}
64
65/* computes tag checksum */
66u8 udf_tag_checksum(const struct tag *t);
67
68struct dentry;
69struct inode;
70struct task_struct;
71struct buffer_head;
72struct super_block;
73
74extern const struct export_operations udf_export_ops;
75extern const struct inode_operations udf_dir_inode_operations;
76extern const struct file_operations udf_dir_operations;
77extern const struct inode_operations udf_file_inode_operations;
78extern const struct file_operations udf_file_operations;
79extern const struct inode_operations udf_symlink_inode_operations;
80extern const struct address_space_operations udf_aops;
81extern const struct address_space_operations udf_adinicb_aops;
82extern const struct address_space_operations udf_symlink_aops;
83
84struct udf_fileident_bh {
85    struct buffer_head *sbh;
86    struct buffer_head *ebh;
87    int soffset;
88    int eoffset;
89};
90
91struct udf_vds_record {
92    uint32_t block;
93    uint32_t volDescSeqNum;
94};
95
96struct generic_desc {
97    struct tag descTag;
98    __le32 volDescSeqNum;
99};
100
101struct ustr {
102    uint8_t u_cmpID;
103    uint8_t u_name[UDF_NAME_LEN - 2];
104    uint8_t u_len;
105};
106
107struct extent_position {
108    struct buffer_head *bh;
109    uint32_t offset;
110    struct kernel_lb_addr block;
111};
112
113/* super.c */
114
115__attribute__((format(printf, 3, 4)))
116extern void udf_warning(struct super_block *, const char *, const char *, ...);
117static inline void udf_updated_lvid(struct super_block *sb)
118{
119    struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
120
121    BUG_ON(!bh);
122    WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
123             bh->b_data)->integrityType !=
124             cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
125    sb->s_dirt = 1;
126    UDF_SB(sb)->s_lvid_dirty = 1;
127}
128extern u64 lvid_get_unique_id(struct super_block *sb);
129
130/* namei.c */
131extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
132            struct fileIdentDesc *, struct udf_fileident_bh *,
133            uint8_t *, uint8_t *);
134
135/* file.c */
136extern long udf_ioctl(struct file *, unsigned int, unsigned long);
137/* inode.c */
138extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
139extern int udf_expand_file_adinicb(struct inode *);
140extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
141extern struct buffer_head *udf_bread(struct inode *, int, int, int *);
142extern int udf_setsize(struct inode *, loff_t);
143extern void udf_read_inode(struct inode *);
144extern void udf_evict_inode(struct inode *);
145extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
146extern long udf_block_map(struct inode *, sector_t);
147extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
148             struct kernel_lb_addr *, uint32_t *, sector_t *);
149extern int udf_add_aext(struct inode *, struct extent_position *,
150            struct kernel_lb_addr *, uint32_t, int);
151extern void udf_write_aext(struct inode *, struct extent_position *,
152               struct kernel_lb_addr *, uint32_t, int);
153extern int8_t udf_delete_aext(struct inode *, struct extent_position,
154                  struct kernel_lb_addr, uint32_t);
155extern int8_t udf_next_aext(struct inode *, struct extent_position *,
156                struct kernel_lb_addr *, uint32_t *, int);
157extern int8_t udf_current_aext(struct inode *, struct extent_position *,
158                   struct kernel_lb_addr *, uint32_t *, int);
159
160/* misc.c */
161extern struct buffer_head *udf_tgetblk(struct super_block *, int);
162extern struct buffer_head *udf_tread(struct super_block *, int);
163extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
164                          uint32_t, uint8_t);
165extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
166                          uint8_t);
167extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
168                       uint32_t, uint16_t *);
169extern struct buffer_head *udf_read_ptagged(struct super_block *,
170                        struct kernel_lb_addr *, uint32_t,
171                        uint16_t *);
172extern void udf_update_tag(char *, int);
173extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
174
175/* lowlevel.c */
176extern unsigned int udf_get_last_session(struct super_block *);
177extern unsigned long udf_get_last_block(struct super_block *);
178
179/* partition.c */
180extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
181                   uint32_t);
182extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
183                      uint32_t);
184extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
185                      uint32_t);
186extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
187                      uint32_t);
188extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
189                      uint32_t);
190extern int udf_relocate_blocks(struct super_block *, long, long *);
191
192static inline uint32_t
193udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
194          uint32_t offset)
195{
196    return udf_get_pblock(sb, loc->logicalBlockNum,
197            loc->partitionReferenceNum, offset);
198}
199
200/* unicode.c */
201extern int udf_get_filename(struct super_block *, uint8_t *, uint8_t *, int);
202extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
203                int);
204extern int udf_build_ustr(struct ustr *, dstring *, int);
205extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);
206
207/* ialloc.c */
208extern void udf_free_inode(struct inode *);
209extern struct inode *udf_new_inode(struct inode *, int, int *);
210
211/* truncate.c */
212extern void udf_truncate_tail_extent(struct inode *);
213extern void udf_discard_prealloc(struct inode *);
214extern void udf_truncate_extents(struct inode *);
215
216/* balloc.c */
217extern void udf_free_blocks(struct super_block *, struct inode *,
218                struct kernel_lb_addr *, uint32_t, uint32_t);
219extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
220                   uint32_t, uint32_t);
221extern int udf_new_block(struct super_block *, struct inode *, uint16_t,
222             uint32_t, int *);
223
224/* directory.c */
225extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
226                        struct udf_fileident_bh *,
227                        struct fileIdentDesc *,
228                        struct extent_position *,
229                        struct kernel_lb_addr *, uint32_t *,
230                        sector_t *);
231extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
232                           int *offset);
233extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
234extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
235
236/* udftime.c */
237extern struct timespec *udf_disk_stamp_to_time(struct timespec *dest,
238                        struct timestamp src);
239extern struct timestamp *udf_time_to_disk_stamp(struct timestamp *dest, struct timespec src);
240
241#endif /* __UDF_DECL_H */
242

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