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 timespec *dest, 262 struct timestamp src); 263 extern void udf_time_to_disk_stamp(struct timestamp *dest, struct timespec src); 264 265 #endif /* __UDF_DECL_H */ 266