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_EXTENT_LENGTH_MASK 0x3FFFFFFF
38 #define UDF_EXTENT_FLAG_MASK 0xC0000000
39
40 #define UDF_INVALID_ID ((uint32_t)-1)
41
42 #define UDF_NAME_PAD 4
43 #define UDF_NAME_LEN 254
44 #define UDF_NAME_LEN_CS0 255
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 typedef uint32_t udf_pblk_t;
69
70 struct dentry;
71 struct inode;
72 struct task_struct;
73 struct buffer_head;
74 struct super_block;
75
76 extern const struct export_operations udf_export_ops;
77 extern const struct inode_operations udf_dir_inode_operations;
78 extern const struct file_operations udf_dir_operations;
79 extern const struct inode_operations udf_file_inode_operations;
80 extern const struct file_operations udf_file_operations;
81 extern const struct inode_operations udf_symlink_inode_operations;
82 extern const struct address_space_operations udf_aops;
83 extern const struct address_space_operations udf_symlink_aops;
84
85 struct udf_fileident_iter {
86 struct inode *dir; /* Directory we are working with */
87 loff_t pos; /* Logical position in a dir */
88 struct buffer_head *bh[2]; /* Buffer containing 'pos' and possibly
89 * next buffer if entry straddles
90 * blocks */
91 struct kernel_lb_addr eloc; /* Start of extent containing 'pos' */
92 uint32_t elen; /* Length of extent containing 'pos' */
93 sector_t loffset; /* Block offset of 'pos' within above
94 * extent */
95 struct extent_position epos; /* Position after the above extent */
96 struct fileIdentDesc fi; /* Copied directory entry */
97 uint8_t *name; /* Pointer to entry name */
98 uint8_t *namebuf; /* Storage for entry name in case
99 * the name is split between two blocks
100 */
101 };
102
103 struct udf_vds_record {
104 uint32_t block;
105 uint32_t volDescSeqNum;
106 };
107
108 struct generic_desc {
109 struct tag descTag;
110 __le32 volDescSeqNum;
111 };
112
113
114 /* super.c */
115
116 static inline void udf_updated_lvid(struct super_block *sb)
117 {
118 struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
119
120 BUG_ON(!bh);
121 WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
122 bh->b_data)->integrityType !=
123 cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
124 UDF_SB(sb)->s_lvid_dirty = 1;
125 }
126 extern u64 lvid_get_unique_id(struct super_block *sb);
127 struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
128 u32 meta_file_loc, u32 partition_num);
129
130 /* namei.c */
131 static inline unsigned int udf_dir_entry_len(struct fileIdentDesc *cfi)
132 {
133 return ALIGN(sizeof(struct fileIdentDesc) +
134 le16_to_cpu(cfi->lengthOfImpUse) + cfi->lengthFileIdent,
135 UDF_NAME_PAD);
136 }
137
138 /* file.c */
139 extern long udf_ioctl(struct file *, unsigned int, unsigned long);
140
141 /* inode.c */
142 extern struct inode *__udf_iget(struct super_block *, struct kernel_lb_addr *,
143 bool hidden_inode);
144 static inline struct inode *udf_iget_special(struct super_block *sb,
145 struct kernel_lb_addr *ino)
146 {
147 return __udf_iget(sb, ino, true);
148 }
149 static inline struct inode *udf_iget(struct super_block *sb,
150 struct kernel_lb_addr *ino)
151 {
152 return __udf_iget(sb, ino, false);
153 }
154 extern int udf_expand_file_adinicb(struct inode *);
155 extern struct buffer_head *udf_bread(struct inode *inode, udf_pblk_t block,
156 int create, int *err);
157 extern int udf_setsize(struct inode *, loff_t);
158 extern void udf_evict_inode(struct inode *);
159 extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
160 extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
161 struct kernel_lb_addr *, uint32_t *, sector_t *);
162 int udf_get_block(struct inode *, sector_t, struct buffer_head *, int);
163 extern int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block,
164 struct extent_position *epos);
165 extern int __udf_add_aext(struct inode *inode, struct extent_position *epos,
166 struct kernel_lb_addr *eloc, uint32_t elen, int inc);
167 extern int udf_add_aext(struct inode *, struct extent_position *,
168 struct kernel_lb_addr *, uint32_t, int);
169 extern void udf_write_aext(struct inode *, struct extent_position *,
170 struct kernel_lb_addr *, uint32_t, int);
171 extern int8_t udf_delete_aext(struct inode *, struct extent_position);
172 extern int8_t udf_next_aext(struct inode *, struct extent_position *,
173 struct kernel_lb_addr *, uint32_t *, int);
174 extern int8_t udf_current_aext(struct inode *, struct extent_position *,
175 struct kernel_lb_addr *, uint32_t *, int);
176 extern void udf_update_extra_perms(struct inode *inode, umode_t mode);
177
178 /* misc.c */
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 udf_pblk_t 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
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 int udf_fiiter_init(struct udf_fileident_iter *iter, struct inode *dir,
243 loff_t pos);
244 int udf_fiiter_advance(struct udf_fileident_iter *iter);
245 void udf_fiiter_release(struct udf_fileident_iter *iter);
246 void udf_fiiter_write_fi(struct udf_fileident_iter *iter, uint8_t *impuse);
247 void udf_fiiter_update_elen(struct udf_fileident_iter *iter, uint32_t new_elen);
248 int udf_fiiter_append_blk(struct udf_fileident_iter *iter);
249 extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
250 extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
251
252 /* udftime.c */
253 extern void udf_disk_stamp_to_time(struct timespec64 *dest,
254 struct timestamp src);
255 extern void udf_time_to_disk_stamp(struct timestamp *dest, struct timespec64 src);
256
257 #endif /* __UDF_DECL_H */
258
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