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, hidden_inode: 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, hidden_inode: 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 (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 | |