fs/udf/udfdecl.h

   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 */