1 #ifndef __UDF_DECL_H
2 #define __UDF_DECL_H
3 
4 #define pr_fmt(fmt) "UDF-fs: " fmt
5 
6 #include "ecma_167.h"
7 #include "osta_udf.h"
8 
9 #include <linux/fs.h>
10 #include <linux/types.h>
11 #include <linux/buffer_head.h>
12 #include <linux/udf_fs_i.h>
13 
14 #include "udf_sb.h"
15 #include "udfend.h"
16 #include "udf_i.h"
17 
18 #define UDF_PREALLOCATE
19 #define UDF_DEFAULT_PREALLOC_BLOCKS	8
20 
21 extern __printf(3, 4) void _udf_err(struct super_block *sb,
22 		const char *function, const char *fmt, ...);
23 #define udf_err(sb, fmt, ...)					\
24 	_udf_err(sb, __func__, fmt, ##__VA_ARGS__)
25 
26 extern __printf(3, 4) void _udf_warn(struct super_block *sb,
27 		const char *function, const char *fmt, ...);
28 #define udf_warn(sb, fmt, ...)					\
29 	_udf_warn(sb, __func__, fmt, ##__VA_ARGS__)
30 
31 #define udf_info(fmt, ...)					\
32 	pr_info("INFO " fmt, ##__VA_ARGS__)
33 
34 #undef UDFFS_DEBUG
35 
36 #ifdef UDFFS_DEBUG
37 #define udf_debug(fmt, ...)					\
38 	printk(KERN_DEBUG pr_fmt("%s:%d:%s: " fmt),		\
39 	       __FILE__, __LINE__, __func__, ##__VA_ARGS__)
40 #else
41 #define udf_debug(fmt, ...)					\
42 	no_printk(fmt, ##__VA_ARGS__)
43 #endif
44 
45 #define udf_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) )
46 #define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) )
47 
48 #define UDF_EXTENT_LENGTH_MASK	0x3FFFFFFF
49 #define UDF_EXTENT_FLAG_MASK	0xC0000000
50 
51 #define UDF_NAME_PAD		4
52 #define UDF_NAME_LEN		256
53 #define UDF_PATH_LEN		1023
54 
udf_file_entry_alloc_offset(struct inode * inode)55 static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
56 {
57 	struct udf_inode_info *iinfo = UDF_I(inode);
58 	if (iinfo->i_use)
59 		return sizeof(struct unallocSpaceEntry);
60 	else if (iinfo->i_efe)
61 		return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr;
62 	else
63 		return sizeof(struct fileEntry) + iinfo->i_lenEAttr;
64 }
65 
udf_ext0_offset(struct inode * inode)66 static inline size_t udf_ext0_offset(struct inode *inode)
67 {
68 	if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
69 		return udf_file_entry_alloc_offset(inode);
70 	else
71 		return 0;
72 }
73 
74 /* computes tag checksum */
75 u8 udf_tag_checksum(const struct tag *t);
76 
77 struct dentry;
78 struct inode;
79 struct task_struct;
80 struct buffer_head;
81 struct super_block;
82 
83 extern const struct export_operations udf_export_ops;
84 extern const struct inode_operations udf_dir_inode_operations;
85 extern const struct file_operations udf_dir_operations;
86 extern const struct inode_operations udf_file_inode_operations;
87 extern const struct file_operations udf_file_operations;
88 extern const struct inode_operations udf_symlink_inode_operations;
89 extern const struct address_space_operations udf_aops;
90 extern const struct address_space_operations udf_adinicb_aops;
91 extern const struct address_space_operations udf_symlink_aops;
92 
93 struct udf_fileident_bh {
94 	struct buffer_head *sbh;
95 	struct buffer_head *ebh;
96 	int soffset;
97 	int eoffset;
98 };
99 
100 struct udf_vds_record {
101 	uint32_t block;
102 	uint32_t volDescSeqNum;
103 };
104 
105 struct generic_desc {
106 	struct tag	descTag;
107 	__le32		volDescSeqNum;
108 };
109 
110 struct ustr {
111 	uint8_t u_cmpID;
112 	uint8_t u_name[UDF_NAME_LEN - 2];
113 	uint8_t u_len;
114 };
115 
116 struct extent_position {
117 	struct buffer_head *bh;
118 	uint32_t offset;
119 	struct kernel_lb_addr block;
120 };
121 
122 /* super.c */
123 
udf_updated_lvid(struct super_block * sb)124 static inline void udf_updated_lvid(struct super_block *sb)
125 {
126 	struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
127 
128 	BUG_ON(!bh);
129 	WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
130 		     bh->b_data)->integrityType !=
131 		     cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
132 	sb->s_dirt = 1;
133 	UDF_SB(sb)->s_lvid_dirty = 1;
134 }
135 extern u64 lvid_get_unique_id(struct super_block *sb);
136 struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
137 					u32 meta_file_loc, u32 partition_num);
138 
139 /* namei.c */
140 extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
141 			struct fileIdentDesc *, struct udf_fileident_bh *,
142 			uint8_t *, uint8_t *);
143 
144 /* file.c */
145 extern long udf_ioctl(struct file *, unsigned int, unsigned long);
146 /* inode.c */
147 extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
148 extern int udf_expand_file_adinicb(struct inode *);
149 extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
150 extern struct buffer_head *udf_bread(struct inode *, int, int, int *);
151 extern int udf_setsize(struct inode *, loff_t);
152 extern void udf_read_inode(struct inode *);
153 extern void udf_evict_inode(struct inode *);
154 extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
155 extern long udf_block_map(struct inode *, sector_t);
156 extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
157 			 struct kernel_lb_addr *, uint32_t *, sector_t *);
158 extern int udf_add_aext(struct inode *, struct extent_position *,
159 			struct kernel_lb_addr *, uint32_t, int);
160 extern void udf_write_aext(struct inode *, struct extent_position *,
161 			   struct kernel_lb_addr *, uint32_t, int);
162 extern int8_t udf_delete_aext(struct inode *, struct extent_position,
163 			      struct kernel_lb_addr, uint32_t);
164 extern int8_t udf_next_aext(struct inode *, struct extent_position *,
165 			    struct kernel_lb_addr *, uint32_t *, int);
166 extern int8_t udf_current_aext(struct inode *, struct extent_position *,
167 			       struct kernel_lb_addr *, uint32_t *, int);
168 
169 /* misc.c */
170 extern struct buffer_head *udf_tgetblk(struct super_block *, int);
171 extern struct buffer_head *udf_tread(struct super_block *, int);
172 extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
173 						  uint32_t, uint8_t);
174 extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
175 						  uint8_t);
176 extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
177 					   uint32_t, uint16_t *);
178 extern struct buffer_head *udf_read_ptagged(struct super_block *,
179 					    struct kernel_lb_addr *, uint32_t,
180 					    uint16_t *);
181 extern void udf_update_tag(char *, int);
182 extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
183 
184 /* lowlevel.c */
185 extern unsigned int udf_get_last_session(struct super_block *);
186 extern unsigned long udf_get_last_block(struct super_block *);
187 
188 /* partition.c */
189 extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
190 			       uint32_t);
191 extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
192 				      uint32_t);
193 extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
194 				      uint32_t);
195 extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
196 				      uint32_t);
197 extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
198 					  uint32_t);
199 extern int udf_relocate_blocks(struct super_block *, long, long *);
200 
201 static inline uint32_t
udf_get_lb_pblock(struct super_block * sb,struct kernel_lb_addr * loc,uint32_t offset)202 udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
203 		  uint32_t offset)
204 {
205 	return udf_get_pblock(sb, loc->logicalBlockNum,
206 			loc->partitionReferenceNum, offset);
207 }
208 
209 /* unicode.c */
210 extern int udf_get_filename(struct super_block *, uint8_t *, uint8_t *, int);
211 extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
212 			    int);
213 extern int udf_build_ustr(struct ustr *, dstring *, int);
214 extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);
215 
216 /* ialloc.c */
217 extern void udf_free_inode(struct inode *);
218 extern struct inode *udf_new_inode(struct inode *, umode_t, int *);
219 
220 /* truncate.c */
221 extern void udf_truncate_tail_extent(struct inode *);
222 extern void udf_discard_prealloc(struct inode *);
223 extern void udf_truncate_extents(struct inode *);
224 
225 /* balloc.c */
226 extern void udf_free_blocks(struct super_block *, struct inode *,
227 			    struct kernel_lb_addr *, uint32_t, uint32_t);
228 extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
229 			       uint32_t, uint32_t);
230 extern int udf_new_block(struct super_block *, struct inode *, uint16_t,
231 			 uint32_t, int *);
232 
233 /* directory.c */
234 extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
235 						struct udf_fileident_bh *,
236 						struct fileIdentDesc *,
237 						struct extent_position *,
238 						struct kernel_lb_addr *, uint32_t *,
239 						sector_t *);
240 extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
241 					       int *offset);
242 extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
243 extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
244 
245 /* udftime.c */
246 extern struct timespec *udf_disk_stamp_to_time(struct timespec *dest,
247 						struct timestamp src);
248 extern struct timestamp *udf_time_to_disk_stamp(struct timestamp *dest, struct timespec src);
249 
250 #endif				/* __UDF_DECL_H */
251