linux/fs/udf/udfdecl.h
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   1#ifndef __UDF_DECL_H
   2#define __UDF_DECL_H
   3
   4#define pr_fmt(fmt) "UDF-fs: " fmt
   5
   6#include "ecma_167.h"
   7#include "osta_udf.h"
   8
   9#include <linux/fs.h>
  10#include <linux/types.h>
  11#include <linux/buffer_head.h>
  12#include <linux/udf_fs_i.h>
  13
  14#include "udf_sb.h"
  15#include "udfend.h"
  16#include "udf_i.h"
  17
  18#define UDF_PREALLOCATE
  19#define UDF_DEFAULT_PREALLOC_BLOCKS     8
  20
  21extern __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
  26extern __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_NAME_PAD            4
  52#define UDF_NAME_LEN            256
  53#define UDF_PATH_LEN            1023
  54
  55static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
  56{
  57        struct udf_inode_info *iinfo = UDF_I(inode);
  58        if (iinfo->i_use)
  59                return sizeof(struct unallocSpaceEntry);
  60        else if (iinfo->i_efe)
  61                return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr;
  62        else
  63                return sizeof(struct fileEntry) + iinfo->i_lenEAttr;
  64}
  65
  66static inline size_t udf_ext0_offset(struct inode *inode)
  67{
  68        if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
  69                return udf_file_entry_alloc_offset(inode);
  70        else
  71                return 0;
  72}
  73
  74/* computes tag checksum */
  75u8 udf_tag_checksum(const struct tag *t);
  76
  77struct dentry;
  78struct inode;
  79struct task_struct;
  80struct buffer_head;
  81struct super_block;
  82
  83extern const struct export_operations udf_export_ops;
  84extern const struct inode_operations udf_dir_inode_operations;
  85extern const struct file_operations udf_dir_operations;
  86extern const struct inode_operations udf_file_inode_operations;
  87extern const struct file_operations udf_file_operations;
  88extern const struct inode_operations udf_symlink_inode_operations;
  89extern const struct address_space_operations udf_aops;
  90extern const struct address_space_operations udf_adinicb_aops;
  91extern const struct address_space_operations udf_symlink_aops;
  92
  93struct udf_fileident_bh {
  94        struct buffer_head *sbh;
  95        struct buffer_head *ebh;
  96        int soffset;
  97        int eoffset;
  98};
  99
 100struct udf_vds_record {
 101        uint32_t block;
 102        uint32_t volDescSeqNum;
 103};
 104
 105struct generic_desc {
 106        struct tag      descTag;
 107        __le32          volDescSeqNum;
 108};
 109
 110struct ustr {
 111        uint8_t u_cmpID;
 112        uint8_t u_name[UDF_NAME_LEN - 2];
 113        uint8_t u_len;
 114};
 115
 116struct extent_position {
 117        struct buffer_head *bh;
 118        uint32_t offset;
 119        struct kernel_lb_addr block;
 120};
 121
 122/* super.c */
 123
 124static inline void udf_updated_lvid(struct super_block *sb)
 125{
 126        struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
 127
 128        BUG_ON(!bh);
 129        WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
 130                     bh->b_data)->integrityType !=
 131                     cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
 132        UDF_SB(sb)->s_lvid_dirty = 1;
 133}
 134extern u64 lvid_get_unique_id(struct super_block *sb);
 135struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
 136                                        u32 meta_file_loc, u32 partition_num);
 137
 138/* namei.c */
 139extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
 140                        struct fileIdentDesc *, struct udf_fileident_bh *,
 141                        uint8_t *, uint8_t *);
 142
 143/* file.c */
 144extern long udf_ioctl(struct file *, unsigned int, unsigned long);
 145/* inode.c */
 146extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
 147extern int udf_expand_file_adinicb(struct inode *);
 148extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
 149extern struct buffer_head *udf_bread(struct inode *, int, int, int *);
 150extern int udf_setsize(struct inode *, loff_t);
 151extern void udf_read_inode(struct inode *);
 152extern void udf_evict_inode(struct inode *);
 153extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
 154extern long udf_block_map(struct inode *, sector_t);
 155extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
 156                         struct kernel_lb_addr *, uint32_t *, sector_t *);
 157extern int udf_add_aext(struct inode *, struct extent_position *,
 158                        struct kernel_lb_addr *, uint32_t, int);
 159extern void udf_write_aext(struct inode *, struct extent_position *,
 160                           struct kernel_lb_addr *, uint32_t, int);
 161extern int8_t udf_delete_aext(struct inode *, struct extent_position,
 162                              struct kernel_lb_addr, uint32_t);
 163extern int8_t udf_next_aext(struct inode *, struct extent_position *,
 164                            struct kernel_lb_addr *, uint32_t *, int);
 165extern int8_t udf_current_aext(struct inode *, struct extent_position *,
 166                               struct kernel_lb_addr *, uint32_t *, int);
 167
 168/* misc.c */
 169extern struct buffer_head *udf_tgetblk(struct super_block *, int);
 170extern struct buffer_head *udf_tread(struct super_block *, int);
 171extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
 172                                                  uint32_t, uint8_t);
 173extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
 174                                                  uint8_t);
 175extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
 176                                           uint32_t, uint16_t *);
 177extern struct buffer_head *udf_read_ptagged(struct super_block *,
 178                                            struct kernel_lb_addr *, uint32_t,
 179                                            uint16_t *);
 180extern void udf_update_tag(char *, int);
 181extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
 182
 183/* lowlevel.c */
 184extern unsigned int udf_get_last_session(struct super_block *);
 185extern unsigned long udf_get_last_block(struct super_block *);
 186
 187/* partition.c */
 188extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
 189                               uint32_t);
 190extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
 191                                      uint32_t);
 192extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
 193                                      uint32_t);
 194extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
 195                                      uint32_t);
 196extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
 197                                          uint32_t);
 198extern int udf_relocate_blocks(struct super_block *, long, long *);
 199
 200static inline uint32_t
 201udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
 202                  uint32_t offset)
 203{
 204        return udf_get_pblock(sb, loc->logicalBlockNum,
 205                        loc->partitionReferenceNum, offset);
 206}
 207
 208/* unicode.c */
 209extern int udf_get_filename(struct super_block *, uint8_t *, uint8_t *, int);
 210extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
 211                            int);
 212extern int udf_build_ustr(struct ustr *, dstring *, int);
 213extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);
 214
 215/* ialloc.c */
 216extern void udf_free_inode(struct inode *);
 217extern struct inode *udf_new_inode(struct inode *, umode_t, int *);
 218
 219/* truncate.c */
 220extern void udf_truncate_tail_extent(struct inode *);
 221extern void udf_discard_prealloc(struct inode *);
 222extern void udf_truncate_extents(struct inode *);
 223
 224/* balloc.c */
 225extern void udf_free_blocks(struct super_block *, struct inode *,
 226                            struct kernel_lb_addr *, uint32_t, uint32_t);
 227extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
 228                               uint32_t, uint32_t);
 229extern int udf_new_block(struct super_block *, struct inode *, uint16_t,
 230                         uint32_t, int *);
 231
 232/* directory.c */
 233extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
 234                                                struct udf_fileident_bh *,
 235                                                struct fileIdentDesc *,
 236                                                struct extent_position *,
 237                                                struct kernel_lb_addr *, uint32_t *,
 238                                                sector_t *);
 239extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
 240                                               int *offset);
 241extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
 242extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
 243
 244/* udftime.c */
 245extern struct timespec *udf_disk_stamp_to_time(struct timespec *dest,
 246                                                struct timestamp src);
 247extern struct timestamp *udf_time_to_disk_stamp(struct timestamp *dest, struct timespec src);
 248
 249#endif                          /* __UDF_DECL_H */
 250
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