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, 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, 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 int inode_bmap(struct inode *inode, sector_t block, 161 struct extent_position *pos, struct kernel_lb_addr *eloc, 162 uint32_t *elen, sector_t *offset, int8_t *etype); 163 int udf_get_block(struct inode *, sector_t, struct buffer_head *, int); 164 extern int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block, 165 struct extent_position *epos); 166 extern int __udf_add_aext(struct inode *inode, struct extent_position *epos, 167 struct kernel_lb_addr *eloc, uint32_t elen, int inc); 168 extern int udf_add_aext(struct inode *, struct extent_position *, 169 struct kernel_lb_addr *, uint32_t, int); 170 extern void udf_write_aext(struct inode *, struct extent_position *, 171 struct kernel_lb_addr *, uint32_t, int); 172 extern int8_t udf_delete_aext(struct inode *, struct extent_position); 173 extern int udf_next_aext(struct inode *inode, struct extent_position *epos, 174 struct kernel_lb_addr *eloc, uint32_t *elen, 175 int8_t *etype, int inc); 176 extern int udf_current_aext(struct inode *inode, struct extent_position *epos, 177 struct kernel_lb_addr *eloc, uint32_t *elen, 178 int8_t *etype, int inc); 179 extern void udf_update_extra_perms(struct inode *inode, umode_t mode); 180 181 /* misc.c */ 182 extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t, 183 uint32_t, uint8_t); 184 extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t, 185 uint8_t); 186 extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t, 187 uint32_t, uint16_t *); 188 extern struct buffer_head *udf_read_ptagged(struct super_block *, 189 struct kernel_lb_addr *, uint32_t, 190 uint16_t *); 191 extern void udf_update_tag(char *, int); 192 extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int); 193 194 /* lowlevel.c */ 195 extern unsigned int udf_get_last_session(struct super_block *); 196 udf_pblk_t udf_get_last_block(struct super_block *); 197 198 /* partition.c */ 199 extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t, 200 uint32_t); 201 extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t, 202 uint32_t); 203 extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t, 204 uint32_t); 205 extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t, 206 uint32_t); 207 extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t, 208 uint32_t); 209 extern int udf_relocate_blocks(struct super_block *, long, long *); 210 211 static inline uint32_t 212 udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc, 213 uint32_t offset) 214 { 215 return udf_get_pblock(sb, loc->logicalBlockNum, 216 loc->partitionReferenceNum, offset); 217 } 218 219 /* unicode.c */ 220 extern int udf_get_filename(struct super_block *, const uint8_t *, int, 221 uint8_t *, int); 222 extern int udf_put_filename(struct super_block *, const uint8_t *, int, 223 uint8_t *, int); 224 extern int udf_dstrCS0toChar(struct super_block *, uint8_t *, int, 225 const uint8_t *, int); 226 227 /* ialloc.c */ 228 extern void udf_free_inode(struct inode *); 229 extern struct inode *udf_new_inode(struct inode *, umode_t); 230 231 /* truncate.c */ 232 extern void udf_truncate_tail_extent(struct inode *); 233 extern void udf_discard_prealloc(struct inode *); 234 extern int udf_truncate_extents(struct inode *); 235 236 /* balloc.c */ 237 extern void udf_free_blocks(struct super_block *, struct inode *, 238 struct kernel_lb_addr *, uint32_t, uint32_t); 239 extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t, 240 uint32_t, uint32_t); 241 extern udf_pblk_t udf_new_block(struct super_block *sb, struct inode *inode, 242 uint16_t partition, uint32_t goal, int *err); 243 244 /* directory.c */ 245 int udf_fiiter_init(struct udf_fileident_iter *iter, struct inode *dir, 246 loff_t pos); 247 int udf_fiiter_advance(struct udf_fileident_iter *iter); 248 void udf_fiiter_release(struct udf_fileident_iter *iter); 249 void udf_fiiter_write_fi(struct udf_fileident_iter *iter, uint8_t *impuse); 250 void udf_fiiter_update_elen(struct udf_fileident_iter *iter, uint32_t new_elen); 251 int udf_fiiter_append_blk(struct udf_fileident_iter *iter); 252 extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int); 253 extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int); 254 255 /* udftime.c */ 256 extern void udf_disk_stamp_to_time(struct timespec64 *dest, 257 struct timestamp src); 258 extern void udf_time_to_disk_stamp(struct timestamp *dest, struct timespec64 src); 259 260 #endif /* __UDF_DECL_H */ 261