1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __UDF_DECL_H
3 #define __UDF_DECL_H
4
5 #define pr_fmt(fmt) "UDF-fs: " fmt
6
7 #include "ecma_167.h"
8 #include "osta_udf.h"
9
10 #include <linux/fs.h>
11 #include <linux/types.h>
12 #include <linux/buffer_head.h>
13 #include <linux/udf_fs_i.h>
14
15 #include "udf_sb.h"
16 #include "udfend.h"
17 #include "udf_i.h"
18
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 #define udf_debug(fmt, ...) \
35 pr_debug("%s:%d:%s: " fmt, __FILE__, __LINE__, __func__, ##__VA_ARGS__)
36
37 #define udf_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) )
38 #define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) )
39
40 #define UDF_EXTENT_LENGTH_MASK 0x3FFFFFFF
41 #define UDF_EXTENT_FLAG_MASK 0xC0000000
42
43 #define UDF_INVALID_ID ((uint32_t)-1)
44
45 #define UDF_NAME_PAD 4
46 #define UDF_NAME_LEN 254
47 #define UDF_NAME_LEN_CS0 255
48
udf_file_entry_alloc_offset(struct inode * inode)49 static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
50 {
51 struct udf_inode_info *iinfo = UDF_I(inode);
52 if (iinfo->i_use)
53 return sizeof(struct unallocSpaceEntry);
54 else if (iinfo->i_efe)
55 return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr;
56 else
57 return sizeof(struct fileEntry) + iinfo->i_lenEAttr;
58 }
59
udf_ext0_offset(struct inode * inode)60 static inline size_t udf_ext0_offset(struct inode *inode)
61 {
62 if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
63 return udf_file_entry_alloc_offset(inode);
64 else
65 return 0;
66 }
67
68 /* computes tag checksum */
69 u8 udf_tag_checksum(const struct tag *t);
70
71 typedef uint32_t udf_pblk_t;
72
73 struct dentry;
74 struct inode;
75 struct task_struct;
76 struct buffer_head;
77 struct super_block;
78
79 extern const struct export_operations udf_export_ops;
80 extern const struct inode_operations udf_dir_inode_operations;
81 extern const struct file_operations udf_dir_operations;
82 extern const struct inode_operations udf_file_inode_operations;
83 extern const struct file_operations udf_file_operations;
84 extern const struct inode_operations udf_symlink_inode_operations;
85 extern const struct address_space_operations udf_aops;
86 extern const struct address_space_operations udf_adinicb_aops;
87 extern const struct address_space_operations udf_symlink_aops;
88
89 struct udf_fileident_bh {
90 struct buffer_head *sbh;
91 struct buffer_head *ebh;
92 int soffset;
93 int eoffset;
94 };
95
96 struct udf_vds_record {
97 uint32_t block;
98 uint32_t volDescSeqNum;
99 };
100
101 struct generic_desc {
102 struct tag descTag;
103 __le32 volDescSeqNum;
104 };
105
106
107 /* super.c */
108
udf_updated_lvid(struct super_block * sb)109 static inline void udf_updated_lvid(struct super_block *sb)
110 {
111 struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
112
113 BUG_ON(!bh);
114 WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
115 bh->b_data)->integrityType !=
116 cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
117 UDF_SB(sb)->s_lvid_dirty = 1;
118 }
119 extern u64 lvid_get_unique_id(struct super_block *sb);
120 struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
121 u32 meta_file_loc, u32 partition_num);
122
123 /* namei.c */
124 extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
125 struct fileIdentDesc *, struct udf_fileident_bh *,
126 uint8_t *, uint8_t *);
udf_dir_entry_len(struct fileIdentDesc * cfi)127 static inline unsigned int udf_dir_entry_len(struct fileIdentDesc *cfi)
128 {
129 return ALIGN(sizeof(struct fileIdentDesc) +
130 le16_to_cpu(cfi->lengthOfImpUse) + cfi->lengthFileIdent,
131 UDF_NAME_PAD);
132 }
133
134 /* file.c */
135 extern long udf_ioctl(struct file *, unsigned int, unsigned long);
136 /* inode.c */
137 extern struct inode *__udf_iget(struct super_block *, struct kernel_lb_addr *,
138 bool hidden_inode);
udf_iget_special(struct super_block * sb,struct kernel_lb_addr * ino)139 static inline struct inode *udf_iget_special(struct super_block *sb,
140 struct kernel_lb_addr *ino)
141 {
142 return __udf_iget(sb, ino, true);
143 }
udf_iget(struct super_block * sb,struct kernel_lb_addr * ino)144 static inline struct inode *udf_iget(struct super_block *sb,
145 struct kernel_lb_addr *ino)
146 {
147 return __udf_iget(sb, ino, false);
148 }
149 extern int udf_expand_file_adinicb(struct inode *);
150 extern struct buffer_head *udf_expand_dir_adinicb(struct inode *inode,
151 udf_pblk_t *block, int *err);
152 extern struct buffer_head *udf_bread(struct inode *inode, udf_pblk_t block,
153 int create, int *err);
154 extern int udf_setsize(struct inode *, loff_t);
155 extern void udf_evict_inode(struct inode *);
156 extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
157 extern udf_pblk_t udf_block_map(struct inode *inode, sector_t block);
158 extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
159 struct kernel_lb_addr *, uint32_t *, sector_t *);
160 extern int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block,
161 struct extent_position *epos);
162 extern int __udf_add_aext(struct inode *inode, struct extent_position *epos,
163 struct kernel_lb_addr *eloc, uint32_t elen, int inc);
164 extern int udf_add_aext(struct inode *, struct extent_position *,
165 struct kernel_lb_addr *, uint32_t, int);
166 extern void udf_write_aext(struct inode *, struct extent_position *,
167 struct kernel_lb_addr *, uint32_t, int);
168 extern int8_t udf_delete_aext(struct inode *, struct extent_position);
169 extern int8_t udf_next_aext(struct inode *, struct extent_position *,
170 struct kernel_lb_addr *, uint32_t *, int);
171 extern int8_t udf_current_aext(struct inode *, struct extent_position *,
172 struct kernel_lb_addr *, uint32_t *, int);
173 extern void udf_update_extra_perms(struct inode *inode, umode_t mode);
174
175 /* misc.c */
176 extern struct buffer_head *udf_tgetblk(struct super_block *sb,
177 udf_pblk_t block);
178 extern struct buffer_head *udf_tread(struct super_block *sb, udf_pblk_t block);
179 extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
180 uint32_t, uint8_t);
181 extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
182 uint8_t);
183 extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
184 uint32_t, uint16_t *);
185 extern struct buffer_head *udf_read_ptagged(struct super_block *,
186 struct kernel_lb_addr *, uint32_t,
187 uint16_t *);
188 extern void udf_update_tag(char *, int);
189 extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
190
191 /* lowlevel.c */
192 extern unsigned int udf_get_last_session(struct super_block *);
193 extern unsigned long udf_get_last_block(struct super_block *);
194
195 /* partition.c */
196 extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
197 uint32_t);
198 extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
199 uint32_t);
200 extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
201 uint32_t);
202 extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
203 uint32_t);
204 extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
205 uint32_t);
206 extern int udf_relocate_blocks(struct super_block *, long, long *);
207
208 static inline uint32_t
udf_get_lb_pblock(struct super_block * sb,struct kernel_lb_addr * loc,uint32_t offset)209 udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
210 uint32_t offset)
211 {
212 return udf_get_pblock(sb, loc->logicalBlockNum,
213 loc->partitionReferenceNum, offset);
214 }
215
216 /* unicode.c */
217 extern int udf_get_filename(struct super_block *, const uint8_t *, int,
218 uint8_t *, int);
219 extern int udf_put_filename(struct super_block *, const uint8_t *, int,
220 uint8_t *, int);
221 extern int udf_dstrCS0toChar(struct super_block *, uint8_t *, int,
222 const uint8_t *, int);
223
224 /* ialloc.c */
225 extern void udf_free_inode(struct inode *);
226 extern struct inode *udf_new_inode(struct inode *, umode_t);
227
228 /* truncate.c */
229 extern void udf_truncate_tail_extent(struct inode *);
230 extern void udf_discard_prealloc(struct inode *);
231 extern int udf_truncate_extents(struct inode *);
232
233 /* balloc.c */
234 extern void udf_free_blocks(struct super_block *, struct inode *,
235 struct kernel_lb_addr *, uint32_t, uint32_t);
236 extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
237 uint32_t, uint32_t);
238 extern udf_pblk_t udf_new_block(struct super_block *sb, struct inode *inode,
239 uint16_t partition, uint32_t goal, int *err);
240
241 /* directory.c */
242 extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
243 struct udf_fileident_bh *,
244 struct fileIdentDesc *,
245 struct extent_position *,
246 struct kernel_lb_addr *, uint32_t *,
247 sector_t *);
248 extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
249 int *offset);
250 extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
251 extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
252
253 /* udftime.c */
254 extern void udf_disk_stamp_to_time(struct timespec64 *dest,
255 struct timestamp src);
256 extern void udf_time_to_disk_stamp(struct timestamp *dest, struct timespec64 src);
257
258 #endif /* __UDF_DECL_H */
259
