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_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) ) 38 #define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) ) 39 40 #define UDF_EXTENT_LENGTH_MASK 0x3FFFFFFF 41 #define UDF_EXTENT_FLAG_MASK 0xC0000000 42 43 #define UDF_INVALID_ID ((uint32_t)-1) 44 45 #define UDF_NAME_PAD 4 46 #define UDF_NAME_LEN 254 47 #define UDF_NAME_LEN_CS0 255 48 49 static inline size_t udf_file_entry_alloc_offset(struct inode *inode) 50 { 51 struct udf_inode_info *iinfo = UDF_I(inode); 52 if (iinfo->i_use) 53 return sizeof(struct unallocSpaceEntry); 54 else if (iinfo->i_efe) 55 return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr; 56 else 57 return sizeof(struct fileEntry) + iinfo->i_lenEAttr; 58 } 59 60 static inline size_t udf_ext0_offset(struct inode *inode) 61 { 62 if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) 63 return udf_file_entry_alloc_offset(inode); 64 else 65 return 0; 66 } 67 68 /* computes tag checksum */ 69 u8 udf_tag_checksum(const struct tag *t); 70 71 typedef uint32_t udf_pblk_t; 72 73 struct dentry; 74 struct inode; 75 struct task_struct; 76 struct buffer_head; 77 struct super_block; 78 79 extern const struct export_operations udf_export_ops; 80 extern const struct inode_operations udf_dir_inode_operations; 81 extern const struct file_operations udf_dir_operations; 82 extern const struct inode_operations udf_file_inode_operations; 83 extern const struct file_operations udf_file_operations; 84 extern const struct inode_operations udf_symlink_inode_operations; 85 extern const struct address_space_operations udf_aops; 86 extern const struct address_space_operations udf_adinicb_aops; 87 extern const struct address_space_operations udf_symlink_aops; 88 89 struct udf_fileident_bh { 90 struct buffer_head *sbh; 91 struct buffer_head *ebh; 92 int soffset; 93 int eoffset; 94 }; 95 96 struct udf_vds_record { 97 uint32_t block; 98 uint32_t volDescSeqNum; 99 }; 100 101 struct generic_desc { 102 struct tag descTag; 103 __le32 volDescSeqNum; 104 }; 105 106 107 /* super.c */ 108 109 static inline void udf_updated_lvid(struct super_block *sb) 110 { 111 struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh; 112 113 BUG_ON(!bh); 114 WARN_ON_ONCE(((struct logicalVolIntegrityDesc *) 115 bh->b_data)->integrityType != 116 cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN)); 117 UDF_SB(sb)->s_lvid_dirty = 1; 118 } 119 extern u64 lvid_get_unique_id(struct super_block *sb); 120 struct inode *udf_find_metadata_inode_efe(struct super_block *sb, 121 u32 meta_file_loc, u32 partition_num); 122 123 /* namei.c */ 124 extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *, 125 struct fileIdentDesc *, struct udf_fileident_bh *, 126 uint8_t *, uint8_t *); 127 static inline unsigned int udf_dir_entry_len(struct fileIdentDesc *cfi) 128 { 129 return ALIGN(sizeof(struct fileIdentDesc) + 130 le16_to_cpu(cfi->lengthOfImpUse) + cfi->lengthFileIdent, 131 UDF_NAME_PAD); 132 } 133 134 /* file.c */ 135 extern long udf_ioctl(struct file *, unsigned int, unsigned long); 136 /* inode.c */ 137 extern struct inode *__udf_iget(struct super_block *, struct kernel_lb_addr *, 138 bool hidden_inode); 139 static inline struct inode *udf_iget_special(struct super_block *sb, 140 struct kernel_lb_addr *ino) 141 { 142 return __udf_iget(sb, ino, true); 143 } 144 static inline struct inode *udf_iget(struct super_block *sb, 145 struct kernel_lb_addr *ino) 146 { 147 return __udf_iget(sb, ino, false); 148 } 149 extern int udf_expand_file_adinicb(struct inode *); 150 extern struct buffer_head *udf_expand_dir_adinicb(struct inode *inode, 151 udf_pblk_t *block, int *err); 152 extern struct buffer_head *udf_bread(struct inode *inode, udf_pblk_t block, 153 int create, int *err); 154 extern int udf_setsize(struct inode *, loff_t); 155 extern void udf_evict_inode(struct inode *); 156 extern int udf_write_inode(struct inode *, struct writeback_control *wbc); 157 extern udf_pblk_t udf_block_map(struct inode *inode, sector_t block); 158 extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *, 159 struct kernel_lb_addr *, uint32_t *, sector_t *); 160 extern int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block, 161 struct extent_position *epos); 162 extern int __udf_add_aext(struct inode *inode, struct extent_position *epos, 163 struct kernel_lb_addr *eloc, uint32_t elen, int inc); 164 extern int udf_add_aext(struct inode *, struct extent_position *, 165 struct kernel_lb_addr *, uint32_t, int); 166 extern void udf_write_aext(struct inode *, struct extent_position *, 167 struct kernel_lb_addr *, uint32_t, int); 168 extern int8_t udf_delete_aext(struct inode *, struct extent_position); 169 extern int8_t udf_next_aext(struct inode *, struct extent_position *, 170 struct kernel_lb_addr *, uint32_t *, int); 171 extern int8_t udf_current_aext(struct inode *, struct extent_position *, 172 struct kernel_lb_addr *, uint32_t *, int); 173 extern void udf_update_extra_perms(struct inode *inode, umode_t mode); 174 175 /* misc.c */ 176 extern struct buffer_head *udf_tgetblk(struct super_block *sb, 177 udf_pblk_t block); 178 extern struct buffer_head *udf_tread(struct super_block *sb, udf_pblk_t block); 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 extern unsigned long 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 extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *, 243 struct udf_fileident_bh *, 244 struct fileIdentDesc *, 245 struct extent_position *, 246 struct kernel_lb_addr *, uint32_t *, 247 sector_t *); 248 extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize, 249 int *offset); 250 extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int); 251 extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int); 252 253 /* udftime.c */ 254 extern void udf_disk_stamp_to_time(struct timespec64 *dest, 255 struct timestamp src); 256 extern void udf_time_to_disk_stamp(struct timestamp *dest, struct timespec64 src); 257 258 #endif /* __UDF_DECL_H */ 259