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 #define udf_get_lb_pblock(sb,loc,offset) udf_get_pblock((sb), (loc).logicalBlockNum, (loc).partitionReferenceNum, (offset))
  66
  67 /* computes tag checksum */
  68 u8 udf_tag_checksum(const tag *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 address_space_operations udf_aops;
  82 extern const struct address_space_operations udf_adinicb_aops;
  83 extern const struct address_space_operations udf_symlink_aops;
  84
  85 struct udf_fileident_bh {
  86         struct buffer_head *sbh;
  87         struct buffer_head *ebh;
  88         int soffset;
  89         int eoffset;
  90 };
  91
  92 struct udf_vds_record {
  93         uint32_t block;
  94         uint32_t volDescSeqNum;
  95 };
  96
  97 struct generic_desc {
  98         tag             descTag;
  99         __le32          volDescSeqNum;
 100 };
 101
 102 struct ustr {
 103         uint8_t u_cmpID;
 104         uint8_t u_name[UDF_NAME_LEN - 2];
 105         uint8_t u_len;
 106 };
 107
 108 struct extent_position {
 109         struct buffer_head *bh;
 110         uint32_t offset;
 111         kernel_lb_addr block;
 112 };
 113
 114 /* super.c */
 115 extern void udf_warning(struct super_block *, const char *, const char *, ...);
 116
 117 /* namei.c */
 118 extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
 119                         struct fileIdentDesc *, struct udf_fileident_bh *,
 120                         uint8_t *, uint8_t *);
 121
 122 /* file.c */
 123 extern int udf_ioctl(struct inode *, struct file *, unsigned int,
 124                      unsigned long);
 125
 126 /* inode.c */
 127 extern struct inode *udf_iget(struct super_block *, kernel_lb_addr);
 128 extern int udf_sync_inode(struct inode *);
 129 extern void udf_expand_file_adinicb(struct inode *, int, int *);
 130 extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
 131 extern struct buffer_head *udf_bread(struct inode *, int, int, int *);
 132 extern void udf_truncate(struct inode *);
 133 extern void udf_read_inode(struct inode *);
 134 extern void udf_delete_inode(struct inode *);
 135 extern void udf_clear_inode(struct inode *);
 136 extern int udf_write_inode(struct inode *, int);
 137 extern long udf_block_map(struct inode *, sector_t);
 138 extern int udf_extend_file(struct inode *, struct extent_position *,
 139                            kernel_long_ad *, sector_t);
 140 extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
 141                          kernel_lb_addr *, uint32_t *, sector_t *);
 142 extern int8_t udf_add_aext(struct inode *, struct extent_position *,
 143                            kernel_lb_addr, uint32_t, int);
 144 extern int8_t udf_write_aext(struct inode *, struct extent_position *,
 145                              kernel_lb_addr, uint32_t, int);
 146 extern int8_t udf_delete_aext(struct inode *, struct extent_position,
 147                               kernel_lb_addr, uint32_t);
 148 extern int8_t udf_next_aext(struct inode *, struct extent_position *,
 149                             kernel_lb_addr *, uint32_t *, int);
 150 extern int8_t udf_current_aext(struct inode *, struct extent_position *,
 151                                kernel_lb_addr *, uint32_t *, int);
 152
 153 /* misc.c */
 154 extern struct buffer_head *udf_tgetblk(struct super_block *, int);
 155 extern struct buffer_head *udf_tread(struct super_block *, int);
 156 extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
 157                                                   uint32_t, uint8_t);
 158 extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
 159                                                   uint8_t);
 160 extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
 161                                            uint32_t, uint16_t *);
 162 extern struct buffer_head *udf_read_ptagged(struct super_block *,
 163                                             kernel_lb_addr, uint32_t,
 164                                             uint16_t *);
 165 extern void udf_update_tag(char *, int);
 166 extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
 167
 168 /* lowlevel.c */
 169 extern unsigned int udf_get_last_session(struct super_block *);
 170 extern unsigned long udf_get_last_block(struct super_block *);
 171
 172 /* partition.c */
 173 extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
 174                                uint32_t);
 175 extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
 176                                       uint32_t);
 177 extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
 178                                       uint32_t);
 179 extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
 180                                       uint32_t);
 181 extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
 182                                           uint32_t);
 183 extern int udf_relocate_blocks(struct super_block *, long, long *);
 184
 185 /* unicode.c */
 186 extern int udf_get_filename(struct super_block *, uint8_t *, uint8_t *, int);
 187 extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
 188                             int);
 189 extern int udf_build_ustr(struct ustr *, dstring *, int);
 190 extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);
 191
 192 /* ialloc.c */
 193 extern void udf_free_inode(struct inode *);
 194 extern struct inode *udf_new_inode(struct inode *, int, int *);
 195
 196 /* truncate.c */
 197 extern void udf_truncate_tail_extent(struct inode *);
 198 extern void udf_discard_prealloc(struct inode *);
 199 extern void udf_truncate_extents(struct inode *);
 200
 201 /* balloc.c */
 202 extern void udf_free_blocks(struct super_block *, struct inode *,
 203                             kernel_lb_addr, uint32_t, uint32_t);
 204 extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
 205                                uint32_t, uint32_t);
 206 extern int udf_new_block(struct super_block *, struct inode *, uint16_t,
 207                          uint32_t, int *);
 208
 209 /* fsync.c */
 210 extern int udf_fsync_file(struct file *, struct dentry *, int);
 211
 212 /* directory.c */
 213 extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
 214                                                 struct udf_fileident_bh *,
 215                                                 struct fileIdentDesc *,
 216                                                 struct extent_position *,
 217                                                 kernel_lb_addr *, uint32_t *,
 218                                                 sector_t *);
 219 extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
 220                                                int *offset);
 221 extern long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
 222 extern short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
 223
 224 /* udftime.c */
 225 extern struct timespec *udf_disk_stamp_to_time(struct timespec *dest,
 226                                                 timestamp src);
 227 extern timestamp *udf_time_to_disk_stamp(timestamp *dest, struct timespec src);
 228
 229 #endif                          /* __UDF_DECL_H */