fs/udf/udfdecl.h

   1 #ifndef __UDF_DECL_H
   2 #define __UDF_DECL_H
   3
   4 #include "ecma_167.h"
   5 #include "osta_udf.h"
   6
   7 #include <linux/fs.h>
   8 #include <linux/types.h>
   9 #include <linux/buffer_head.h>
  10 #include <linux/udf_fs_i.h>
  11
  12 #include "udf_sb.h"
  13 #include "udfend.h"
  14 #include "udf_i.h"
  15
  16 #define UDF_PREALLOCATE
  17 #define UDF_DEFAULT_PREALLOC_BLOCKS     8
  18
  19 #undef UDFFS_DEBUG
  20
  21 #ifdef UDFFS_DEBUG
  22 #define udf_debug(f, a...) \
  23 do { \
  24         printk(KERN_DEBUG "UDF-fs DEBUG %s:%d:%s: ", \
  25                 __FILE__, __LINE__, __func__); \
  26         printk(f, ##a); \
  27 } while (0)
  28 #else
  29 #define udf_debug(f, a...) /**/
  30 #endif
  31
  32 #define udf_info(f, a...) \
  33         printk(KERN_INFO "UDF-fs INFO " f, ##a);
  34
  35
  36 #define udf_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) )
  37 #define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) )
  38
  39 #define UDF_EXTENT_LENGTH_MASK  0x3FFFFFFF
  40 #define UDF_EXTENT_FLAG_MASK    0xC0000000
  41
  42 #define UDF_NAME_PAD            4
  43 #define UDF_NAME_LEN            256
  44 #define UDF_PATH_LEN            1023
  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 struct dentry;
  69 struct inode;
  70 struct task_struct;
  71 struct buffer_head;
  72 struct super_block;
  73
  74 extern const struct export_operations udf_export_ops;
  75 extern const struct inode_operations udf_dir_inode_operations;
  76 extern const struct file_operations udf_dir_operations;
  77 extern const struct inode_operations udf_file_inode_operations;
  78 extern const struct file_operations udf_file_operations;
  79 extern const struct inode_operations udf_symlink_inode_operations;
  80 extern const struct address_space_operations udf_aops;
  81 extern const struct address_space_operations udf_adinicb_aops;
  82 extern const struct address_space_operations udf_symlink_aops;
  83
  84 struct udf_fileident_bh {
  85         struct buffer_head *sbh;
  86         struct buffer_head *ebh;
  87         int soffset;
  88         int eoffset;
  89 };
  90
  91 struct udf_vds_record {
  92         uint32_t block;
  93         uint32_t volDescSeqNum;
  94 };
  95
  96 struct generic_desc {
  97         struct tag      descTag;
  98         __le32          volDescSeqNum;
  99 };
 100
 101 struct ustr {
 102         uint8_t u_cmpID;
 103         uint8_t u_name[UDF_NAME_LEN - 2];
 104         uint8_t u_len;
 105 };
 106
 107 struct extent_position {
 108         struct buffer_head *bh;
 109         uint32_t offset;
 110         struct kernel_lb_addr block;
 111 };
 112
 113 /* super.c */
 114
 115 __attribute__((format(printf, 3, 4)))
 116 extern void udf_warning(struct super_block *, const char *, const char *, ...);
 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         sb->s_dirt = 1;
 126         UDF_SB(sb)->s_lvid_dirty = 1;
 127 }
 128 extern u64 lvid_get_unique_id(struct super_block *sb);
 129
 130 /* namei.c */
 131 extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
 132                         struct fileIdentDesc *, struct udf_fileident_bh *,
 133                         uint8_t *, uint8_t *);
 134
 135 /* file.c */
 136 extern long udf_ioctl(struct file *, unsigned int, unsigned long);
 137 /* inode.c */
 138 extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
 139 extern void udf_expand_file_adinicb(struct inode *, int, int *);
 140 extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
 141 extern struct buffer_head *udf_bread(struct inode *, int, int, int *);
 142 extern void udf_truncate(struct inode *);
 143 extern void udf_read_inode(struct inode *);
 144 extern void udf_evict_inode(struct inode *);
 145 extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
 146 extern long udf_block_map(struct inode *, sector_t);
 147 extern int udf_extend_file(struct inode *, struct extent_position *,
 148                            struct kernel_long_ad *, sector_t);
 149 extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
 150                          struct kernel_lb_addr *, uint32_t *, sector_t *);
 151 extern int8_t udf_add_aext(struct inode *, struct extent_position *,
 152                            struct kernel_lb_addr *, uint32_t, int);
 153 extern int8_t udf_write_aext(struct inode *, struct extent_position *,
 154                              struct kernel_lb_addr *, uint32_t, int);
 155 extern int8_t udf_delete_aext(struct inode *, struct extent_position,
 156                               struct kernel_lb_addr, uint32_t);
 157 extern int8_t udf_next_aext(struct inode *, struct extent_position *,
 158                             struct kernel_lb_addr *, uint32_t *, int);
 159 extern int8_t udf_current_aext(struct inode *, struct extent_position *,
 160                                struct kernel_lb_addr *, uint32_t *, int);
 161
 162 /* misc.c */
 163 extern struct buffer_head *udf_tgetblk(struct super_block *, int);
 164 extern struct buffer_head *udf_tread(struct super_block *, int);
 165 extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
 166                                                   uint32_t, uint8_t);
 167 extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
 168                                                   uint8_t);
 169 extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
 170                                            uint32_t, uint16_t *);
 171 extern struct buffer_head *udf_read_ptagged(struct super_block *,
 172                                             struct kernel_lb_addr *, uint32_t,
 173                                             uint16_t *);
 174 extern void udf_update_tag(char *, int);
 175 extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
 176
 177 /* lowlevel.c */
 178 extern unsigned int udf_get_last_session(struct super_block *);
 179 extern unsigned long udf_get_last_block(struct super_block *);
 180
 181 /* partition.c */
 182 extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
 183                                uint32_t);
 184 extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
 185                                       uint32_t);
 186 extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
 187                                       uint32_t);
 188 extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
 189                                       uint32_t);
 190 extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
 191                                           uint32_t);
 192 extern int udf_relocate_blocks(struct super_block *, long, long *);
 193
 194 static inline uint32_t
 195 udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
 196                   uint32_t offset)
 197 {
 198         return udf_get_pblock(sb, loc->logicalBlockNum,
 199                         loc->partitionReferenceNum, offset);
 200 }
 201
 202 /* unicode.c */
 203 extern int udf_get_filename(struct super_block *, uint8_t *, uint8_t *, int);
 204 extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
 205                             int);
 206 extern int udf_build_ustr(struct ustr *, dstring *, int);
 207 extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);
 208
 209 /* ialloc.c */
 210 extern void udf_free_inode(struct inode *);
 211 extern struct inode *udf_new_inode(struct inode *, int, int *);
 212
 213 /* truncate.c */
 214 extern void udf_truncate_tail_extent(struct inode *);
 215 extern void udf_discard_prealloc(struct inode *);
 216 extern void udf_truncate_extents(struct inode *);
 217
 218 /* balloc.c */
 219 extern void udf_free_blocks(struct super_block *, struct inode *,
 220                             struct kernel_lb_addr *, uint32_t, uint32_t);
 221 extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
 222                                uint32_t, uint32_t);
 223 extern int udf_new_block(struct super_block *, struct inode *, uint16_t,
 224                          uint32_t, int *);
 225
 226 /* directory.c */
 227 extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
 228                                                 struct udf_fileident_bh *,
 229                                                 struct fileIdentDesc *,
 230                                                 struct extent_position *,
 231                                                 struct kernel_lb_addr *, uint32_t *,
 232                                                 sector_t *);
 233 extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
 234                                                int *offset);
 235 extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
 236 extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
 237
 238 /* udftime.c */
 239 extern struct timespec *udf_disk_stamp_to_time(struct timespec *dest,
 240                                                 struct timestamp src);
 241 extern struct timestamp *udf_time_to_disk_stamp(struct timestamp *dest, struct timespec src);
 242
 243 #endif                          /* __UDF_DECL_H */