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TOMOYO Linux Cross Reference
Linux/fs/udf/udfdecl.h

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  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 #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_INVALID_ID ((uint32_t)-1)
 52 
 53 #define UDF_NAME_PAD            4
 54 #define UDF_NAME_LEN            254
 55 #define UDF_NAME_LEN_CS0        255
 56 
 57 static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
 58 {
 59         struct udf_inode_info *iinfo = UDF_I(inode);
 60         if (iinfo->i_use)
 61                 return sizeof(struct unallocSpaceEntry);
 62         else if (iinfo->i_efe)
 63                 return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr;
 64         else
 65                 return sizeof(struct fileEntry) + iinfo->i_lenEAttr;
 66 }
 67 
 68 static inline size_t udf_ext0_offset(struct inode *inode)
 69 {
 70         if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
 71                 return udf_file_entry_alloc_offset(inode);
 72         else
 73                 return 0;
 74 }
 75 
 76 /* computes tag checksum */
 77 u8 udf_tag_checksum(const struct tag *t);
 78 
 79 typedef uint32_t udf_pblk_t;
 80 
 81 struct dentry;
 82 struct inode;
 83 struct task_struct;
 84 struct buffer_head;
 85 struct super_block;
 86 
 87 extern const struct export_operations udf_export_ops;
 88 extern const struct inode_operations udf_dir_inode_operations;
 89 extern const struct file_operations udf_dir_operations;
 90 extern const struct inode_operations udf_file_inode_operations;
 91 extern const struct file_operations udf_file_operations;
 92 extern const struct inode_operations udf_symlink_inode_operations;
 93 extern const struct address_space_operations udf_aops;
 94 extern const struct address_space_operations udf_adinicb_aops;
 95 extern const struct address_space_operations udf_symlink_aops;
 96 
 97 struct udf_fileident_bh {
 98         struct buffer_head *sbh;
 99         struct buffer_head *ebh;
100         int soffset;
101         int eoffset;
102 };
103 
104 struct udf_vds_record {
105         uint32_t block;
106         uint32_t volDescSeqNum;
107 };
108 
109 struct generic_desc {
110         struct tag      descTag;
111         __le32          volDescSeqNum;
112 };
113 
114 
115 /* super.c */
116 
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         UDF_SB(sb)->s_lvid_dirty = 1;
126 }
127 extern u64 lvid_get_unique_id(struct super_block *sb);
128 struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
129                                         u32 meta_file_loc, u32 partition_num);
130 
131 /* namei.c */
132 extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
133                         struct fileIdentDesc *, struct udf_fileident_bh *,
134                         uint8_t *, uint8_t *);
135 static inline unsigned int udf_dir_entry_len(struct fileIdentDesc *cfi)
136 {
137         return ALIGN(sizeof(struct fileIdentDesc) +
138                 le16_to_cpu(cfi->lengthOfImpUse) + cfi->lengthFileIdent,
139                 UDF_NAME_PAD);
140 }
141 
142 /* file.c */
143 extern long udf_ioctl(struct file *, unsigned int, unsigned long);
144 /* inode.c */
145 extern struct inode *__udf_iget(struct super_block *, struct kernel_lb_addr *,
146                                 bool hidden_inode);
147 static inline struct inode *udf_iget_special(struct super_block *sb,
148                                              struct kernel_lb_addr *ino)
149 {
150         return __udf_iget(sb, ino, true);
151 }
152 static inline struct inode *udf_iget(struct super_block *sb,
153                                      struct kernel_lb_addr *ino)
154 {
155         return __udf_iget(sb, ino, false);
156 }
157 extern int udf_expand_file_adinicb(struct inode *);
158 extern struct buffer_head *udf_expand_dir_adinicb(struct inode *inode,
159                                                   udf_pblk_t *block, int *err);
160 extern struct buffer_head *udf_bread(struct inode *inode, udf_pblk_t block,
161                                       int create, int *err);
162 extern int udf_setsize(struct inode *, loff_t);
163 extern void udf_evict_inode(struct inode *);
164 extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
165 extern udf_pblk_t udf_block_map(struct inode *inode, sector_t block);
166 extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
167                          struct kernel_lb_addr *, uint32_t *, sector_t *);
168 extern int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block,
169                                    struct extent_position *epos);
170 extern int __udf_add_aext(struct inode *inode, struct extent_position *epos,
171                           struct kernel_lb_addr *eloc, uint32_t elen, int inc);
172 extern int udf_add_aext(struct inode *, struct extent_position *,
173                         struct kernel_lb_addr *, uint32_t, int);
174 extern void udf_write_aext(struct inode *, struct extent_position *,
175                            struct kernel_lb_addr *, uint32_t, int);
176 extern int8_t udf_delete_aext(struct inode *, struct extent_position);
177 extern int8_t udf_next_aext(struct inode *, struct extent_position *,
178                             struct kernel_lb_addr *, uint32_t *, int);
179 extern int8_t udf_current_aext(struct inode *, struct extent_position *,
180                                struct kernel_lb_addr *, uint32_t *, int);
181 
182 /* misc.c */
183 extern struct buffer_head *udf_tgetblk(struct super_block *sb,
184                                         udf_pblk_t block);
185 extern struct buffer_head *udf_tread(struct super_block *sb, udf_pblk_t block);
186 extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
187                                                   uint32_t, uint8_t);
188 extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
189                                                   uint8_t);
190 extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
191                                            uint32_t, uint16_t *);
192 extern struct buffer_head *udf_read_ptagged(struct super_block *,
193                                             struct kernel_lb_addr *, uint32_t,
194                                             uint16_t *);
195 extern void udf_update_tag(char *, int);
196 extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
197 
198 /* lowlevel.c */
199 extern unsigned int udf_get_last_session(struct super_block *);
200 extern unsigned long udf_get_last_block(struct super_block *);
201 
202 /* partition.c */
203 extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
204                                uint32_t);
205 extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
206                                       uint32_t);
207 extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
208                                       uint32_t);
209 extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
210                                       uint32_t);
211 extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
212                                           uint32_t);
213 extern int udf_relocate_blocks(struct super_block *, long, long *);
214 
215 static inline uint32_t
216 udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
217                   uint32_t offset)
218 {
219         return udf_get_pblock(sb, loc->logicalBlockNum,
220                         loc->partitionReferenceNum, offset);
221 }
222 
223 /* unicode.c */
224 extern int udf_get_filename(struct super_block *, const uint8_t *, int,
225                             uint8_t *, int);
226 extern int udf_put_filename(struct super_block *, const uint8_t *, int,
227                             uint8_t *, int);
228 extern int udf_dstrCS0toChar(struct super_block *, uint8_t *, int,
229                              const uint8_t *, int);
230 
231 /* ialloc.c */
232 extern void udf_free_inode(struct inode *);
233 extern struct inode *udf_new_inode(struct inode *, umode_t);
234 
235 /* truncate.c */
236 extern void udf_truncate_tail_extent(struct inode *);
237 extern void udf_discard_prealloc(struct inode *);
238 extern void udf_truncate_extents(struct inode *);
239 
240 /* balloc.c */
241 extern void udf_free_blocks(struct super_block *, struct inode *,
242                             struct kernel_lb_addr *, uint32_t, uint32_t);
243 extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
244                                uint32_t, uint32_t);
245 extern udf_pblk_t udf_new_block(struct super_block *sb, struct inode *inode,
246                                  uint16_t partition, uint32_t goal, int *err);
247 
248 /* directory.c */
249 extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
250                                                 struct udf_fileident_bh *,
251                                                 struct fileIdentDesc *,
252                                                 struct extent_position *,
253                                                 struct kernel_lb_addr *, uint32_t *,
254                                                 sector_t *);
255 extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
256                                                int *offset);
257 extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
258 extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
259 
260 /* udftime.c */
261 extern void udf_disk_stamp_to_time(struct timespec64 *dest,
262                                                 struct timestamp src);
263 extern void udf_time_to_disk_stamp(struct timestamp *dest, struct timespec64 src);
264 
265 #endif                          /* __UDF_DECL_H */
266 

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