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 #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 */