xref: /openbmc/linux/fs/udf/udfdecl.h (revision 4800cd83)
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...) \
23 do { \
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 
46 static 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 
57 static 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 */
66 u8 udf_tag_checksum(const struct tag *t);
67 
68 struct dentry;
69 struct inode;
70 struct task_struct;
71 struct buffer_head;
72 struct super_block;
73 
74 extern const struct export_operations udf_export_ops;
75 extern const struct inode_operations udf_dir_inode_operations;
76 extern const struct file_operations udf_dir_operations;
77 extern const struct inode_operations udf_file_inode_operations;
78 extern const struct file_operations udf_file_operations;
79 extern const struct inode_operations udf_symlink_inode_operations;
80 extern const struct address_space_operations udf_aops;
81 extern const struct address_space_operations udf_adinicb_aops;
82 extern const struct address_space_operations udf_symlink_aops;
83 
84 struct udf_fileident_bh {
85 	struct buffer_head *sbh;
86 	struct buffer_head *ebh;
87 	int soffset;
88 	int eoffset;
89 };
90 
91 struct udf_vds_record {
92 	uint32_t block;
93 	uint32_t volDescSeqNum;
94 };
95 
96 struct generic_desc {
97 	struct tag	descTag;
98 	__le32		volDescSeqNum;
99 };
100 
101 struct ustr {
102 	uint8_t u_cmpID;
103 	uint8_t u_name[UDF_NAME_LEN - 2];
104 	uint8_t u_len;
105 };
106 
107 struct 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)))
116 extern void udf_warning(struct super_block *, const char *, const char *, ...);
117 static 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 }
128 extern u64 lvid_get_unique_id(struct super_block *sb);
129 
130 /* namei.c */
131 extern 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 */
136 extern long udf_ioctl(struct file *, unsigned int, unsigned long);
137 /* inode.c */
138 extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
139 extern void udf_expand_file_adinicb(struct inode *, int, int *);
140 extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
141 extern struct buffer_head *udf_bread(struct inode *, int, int, int *);
142 extern void udf_truncate(struct inode *);
143 extern void udf_read_inode(struct inode *);
144 extern void udf_evict_inode(struct inode *);
145 extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
146 extern long udf_block_map(struct inode *, sector_t);
147 extern int udf_extend_file(struct inode *, struct extent_position *,
148 			   struct kernel_long_ad *, sector_t);
149 extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
150 			 struct kernel_lb_addr *, uint32_t *, sector_t *);
151 extern int8_t udf_add_aext(struct inode *, struct extent_position *,
152 			   struct kernel_lb_addr *, uint32_t, int);
153 extern int8_t udf_write_aext(struct inode *, struct extent_position *,
154 			     struct kernel_lb_addr *, uint32_t, int);
155 extern int8_t udf_delete_aext(struct inode *, struct extent_position,
156 			      struct kernel_lb_addr, uint32_t);
157 extern int8_t udf_next_aext(struct inode *, struct extent_position *,
158 			    struct kernel_lb_addr *, uint32_t *, int);
159 extern int8_t udf_current_aext(struct inode *, struct extent_position *,
160 			       struct kernel_lb_addr *, uint32_t *, int);
161 
162 /* misc.c */
163 extern struct buffer_head *udf_tgetblk(struct super_block *, int);
164 extern struct buffer_head *udf_tread(struct super_block *, int);
165 extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
166 						  uint32_t, uint8_t);
167 extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
168 						  uint8_t);
169 extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
170 					   uint32_t, uint16_t *);
171 extern struct buffer_head *udf_read_ptagged(struct super_block *,
172 					    struct kernel_lb_addr *, uint32_t,
173 					    uint16_t *);
174 extern void udf_update_tag(char *, int);
175 extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
176 
177 /* lowlevel.c */
178 extern unsigned int udf_get_last_session(struct super_block *);
179 extern unsigned long udf_get_last_block(struct super_block *);
180 
181 /* partition.c */
182 extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
183 			       uint32_t);
184 extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
185 				      uint32_t);
186 extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
187 				      uint32_t);
188 extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
189 				      uint32_t);
190 extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
191 					  uint32_t);
192 extern int udf_relocate_blocks(struct super_block *, long, long *);
193 
194 static inline uint32_t
195 udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
196 		  uint32_t offset)
197 {
198 	return udf_get_pblock(sb, loc->logicalBlockNum,
199 			loc->partitionReferenceNum, offset);
200 }
201 
202 /* unicode.c */
203 extern int udf_get_filename(struct super_block *, uint8_t *, uint8_t *, int);
204 extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
205 			    int);
206 extern int udf_build_ustr(struct ustr *, dstring *, int);
207 extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);
208 
209 /* ialloc.c */
210 extern void udf_free_inode(struct inode *);
211 extern struct inode *udf_new_inode(struct inode *, int, int *);
212 
213 /* truncate.c */
214 extern void udf_truncate_tail_extent(struct inode *);
215 extern void udf_discard_prealloc(struct inode *);
216 extern void udf_truncate_extents(struct inode *);
217 
218 /* balloc.c */
219 extern void udf_free_blocks(struct super_block *, struct inode *,
220 			    struct kernel_lb_addr *, uint32_t, uint32_t);
221 extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
222 			       uint32_t, uint32_t);
223 extern int udf_new_block(struct super_block *, struct inode *, uint16_t,
224 			 uint32_t, int *);
225 
226 /* directory.c */
227 extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
228 						struct udf_fileident_bh *,
229 						struct fileIdentDesc *,
230 						struct extent_position *,
231 						struct kernel_lb_addr *, uint32_t *,
232 						sector_t *);
233 extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
234 					       int *offset);
235 extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
236 extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
237 
238 /* udftime.c */
239 extern struct timespec *udf_disk_stamp_to_time(struct timespec *dest,
240 						struct timestamp src);
241 extern struct timestamp *udf_time_to_disk_stamp(struct timestamp *dest, struct timespec src);
242 
243 #endif				/* __UDF_DECL_H */
244