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Linux/fs/udf/udfdecl.h

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  1 #ifndef __UDF_DECL_H
  2 #define __UDF_DECL_H
  3 
  4 #define pr_fmt(fmt) "UDF-fs: " fmt
  5 
  6 #include "ecma_167.h"
  7 #include "osta_udf.h"
  8 
  9 #include <linux/fs.h>
 10 #include <linux/types.h>
 11 #include <linux/buffer_head.h>
 12 #include <linux/udf_fs_i.h>
 13 
 14 #include "udf_sb.h"
 15 #include "udfend.h"
 16 #include "udf_i.h"
 17 
 18 #define UDF_PREALLOCATE
 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_NAME_PAD            4
 52 #define UDF_NAME_LEN            256
 53 #define UDF_PATH_LEN            1023
 54 
 55 static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
 56 {
 57         struct udf_inode_info *iinfo = UDF_I(inode);
 58         if (iinfo->i_use)
 59                 return sizeof(struct unallocSpaceEntry);
 60         else if (iinfo->i_efe)
 61                 return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr;
 62         else
 63                 return sizeof(struct fileEntry) + iinfo->i_lenEAttr;
 64 }
 65 
 66 static inline size_t udf_ext0_offset(struct inode *inode)
 67 {
 68         if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
 69                 return udf_file_entry_alloc_offset(inode);
 70         else
 71                 return 0;
 72 }
 73 
 74 /* computes tag checksum */
 75 u8 udf_tag_checksum(const struct tag *t);
 76 
 77 struct dentry;
 78 struct inode;
 79 struct task_struct;
 80 struct buffer_head;
 81 struct super_block;
 82 
 83 extern const struct export_operations udf_export_ops;
 84 extern const struct inode_operations udf_dir_inode_operations;
 85 extern const struct file_operations udf_dir_operations;
 86 extern const struct inode_operations udf_file_inode_operations;
 87 extern const struct file_operations udf_file_operations;
 88 extern const struct inode_operations udf_symlink_inode_operations;
 89 extern const struct address_space_operations udf_aops;
 90 extern const struct address_space_operations udf_adinicb_aops;
 91 extern const struct address_space_operations udf_symlink_aops;
 92 
 93 struct udf_fileident_bh {
 94         struct buffer_head *sbh;
 95         struct buffer_head *ebh;
 96         int soffset;
 97         int eoffset;
 98 };
 99 
100 struct udf_vds_record {
101         uint32_t block;
102         uint32_t volDescSeqNum;
103 };
104 
105 struct generic_desc {
106         struct tag      descTag;
107         __le32          volDescSeqNum;
108 };
109 
110 struct ustr {
111         uint8_t u_cmpID;
112         uint8_t u_name[UDF_NAME_LEN - 2];
113         uint8_t u_len;
114 };
115 
116 
117 /* super.c */
118 
119 static inline void udf_updated_lvid(struct super_block *sb)
120 {
121         struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
122 
123         BUG_ON(!bh);
124         WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
125                      bh->b_data)->integrityType !=
126                      cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
127         UDF_SB(sb)->s_lvid_dirty = 1;
128 }
129 extern u64 lvid_get_unique_id(struct super_block *sb);
130 struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
131                                         u32 meta_file_loc, u32 partition_num);
132 
133 /* namei.c */
134 extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
135                         struct fileIdentDesc *, struct udf_fileident_bh *,
136                         uint8_t *, uint8_t *);
137 
138 /* file.c */
139 extern long udf_ioctl(struct file *, unsigned int, unsigned long);
140 /* inode.c */
141 extern struct inode *__udf_iget(struct super_block *, struct kernel_lb_addr *,
142                                 bool hidden_inode);
143 static inline struct inode *udf_iget_special(struct super_block *sb,
144                                              struct kernel_lb_addr *ino)
145 {
146         return __udf_iget(sb, ino, true);
147 }
148 static inline struct inode *udf_iget(struct super_block *sb,
149                                      struct kernel_lb_addr *ino)
150 {
151         return __udf_iget(sb, ino, false);
152 }
153 extern int udf_expand_file_adinicb(struct inode *);
154 extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
155 extern struct buffer_head *udf_bread(struct inode *, int, int, int *);
156 extern int udf_setsize(struct inode *, loff_t);
157 extern void udf_evict_inode(struct inode *);
158 extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
159 extern long udf_block_map(struct inode *, sector_t);
160 extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
161                          struct kernel_lb_addr *, uint32_t *, sector_t *);
162 extern int udf_add_aext(struct inode *, struct extent_position *,
163                         struct kernel_lb_addr *, uint32_t, int);
164 extern void udf_write_aext(struct inode *, struct extent_position *,
165                            struct kernel_lb_addr *, uint32_t, int);
166 extern int8_t udf_delete_aext(struct inode *, struct extent_position,
167                               struct kernel_lb_addr, uint32_t);
168 extern int8_t udf_next_aext(struct inode *, struct extent_position *,
169                             struct kernel_lb_addr *, uint32_t *, int);
170 extern int8_t udf_current_aext(struct inode *, struct extent_position *,
171                                struct kernel_lb_addr *, uint32_t *, int);
172 
173 /* misc.c */
174 extern struct buffer_head *udf_tgetblk(struct super_block *, int);
175 extern struct buffer_head *udf_tread(struct super_block *, int);
176 extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
177                                                   uint32_t, uint8_t);
178 extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
179                                                   uint8_t);
180 extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
181                                            uint32_t, uint16_t *);
182 extern struct buffer_head *udf_read_ptagged(struct super_block *,
183                                             struct kernel_lb_addr *, uint32_t,
184                                             uint16_t *);
185 extern void udf_update_tag(char *, int);
186 extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
187 
188 /* lowlevel.c */
189 extern unsigned int udf_get_last_session(struct super_block *);
190 extern unsigned long udf_get_last_block(struct super_block *);
191 
192 /* partition.c */
193 extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
194                                uint32_t);
195 extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
196                                       uint32_t);
197 extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
198                                       uint32_t);
199 extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
200                                       uint32_t);
201 extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
202                                           uint32_t);
203 extern int udf_relocate_blocks(struct super_block *, long, long *);
204 
205 static inline uint32_t
206 udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
207                   uint32_t offset)
208 {
209         return udf_get_pblock(sb, loc->logicalBlockNum,
210                         loc->partitionReferenceNum, offset);
211 }
212 
213 /* unicode.c */
214 extern int udf_get_filename(struct super_block *, uint8_t *, int, uint8_t *,
215                             int);
216 extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
217                             int);
218 extern int udf_build_ustr(struct ustr *, dstring *, int);
219 extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);
220 
221 /* ialloc.c */
222 extern void udf_free_inode(struct inode *);
223 extern struct inode *udf_new_inode(struct inode *, umode_t);
224 
225 /* truncate.c */
226 extern void udf_truncate_tail_extent(struct inode *);
227 extern void udf_discard_prealloc(struct inode *);
228 extern void udf_truncate_extents(struct inode *);
229 
230 /* balloc.c */
231 extern void udf_free_blocks(struct super_block *, struct inode *,
232                             struct kernel_lb_addr *, uint32_t, uint32_t);
233 extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
234                                uint32_t, uint32_t);
235 extern int udf_new_block(struct super_block *, struct inode *, uint16_t,
236                          uint32_t, int *);
237 
238 /* directory.c */
239 extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
240                                                 struct udf_fileident_bh *,
241                                                 struct fileIdentDesc *,
242                                                 struct extent_position *,
243                                                 struct kernel_lb_addr *, uint32_t *,
244                                                 sector_t *);
245 extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
246                                                int *offset);
247 extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
248 extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
249 
250 /* udftime.c */
251 extern struct timespec *udf_disk_stamp_to_time(struct timespec *dest,
252                                                 struct timestamp src);
253 extern struct timestamp *udf_time_to_disk_stamp(struct timestamp *dest, struct timespec src);
254 
255 #endif                          /* __UDF_DECL_H */
256 

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