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
 116
 117/* super.c */
 118
 119static inline void udf_updated_lvid(struct super_block *sb)
 120{
 121        struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
 122
 123        BUG_ON(!bh);
 124        WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
 125                     bh->b_data)->integrityType !=
 126                     cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
 127        UDF_SB(sb)->s_lvid_dirty = 1;
 128}
 129extern u64 lvid_get_unique_id(struct super_block *sb);
 130struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
 131                                        u32 meta_file_loc, u32 partition_num);
 132
 133/* namei.c */
 134extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
 135                        struct fileIdentDesc *, struct udf_fileident_bh *,
 136                        uint8_t *, uint8_t *);
 137
 138/* file.c */
 139extern long udf_ioctl(struct file *, unsigned int, unsigned long);
 140/* inode.c */
 141extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
 142extern int udf_expand_file_adinicb(struct inode *);
 143extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
 144extern struct buffer_head *udf_bread(struct inode *, int, int, int *);
 145extern int udf_setsize(struct inode *, loff_t);
 146extern void udf_read_inode(struct inode *);
 147extern void udf_evict_inode(struct inode *);
 148extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
 149extern long udf_block_map(struct inode *, sector_t);
 150extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
 151                         struct kernel_lb_addr *, uint32_t *, sector_t *);
 152extern int udf_add_aext(struct inode *, struct extent_position *,
 153                        struct kernel_lb_addr *, uint32_t, int);
 154extern void udf_write_aext(struct inode *, struct extent_position *,
 155                           struct kernel_lb_addr *, uint32_t, int);
 156extern int8_t udf_delete_aext(struct inode *, struct extent_position,
 157                              struct kernel_lb_addr, uint32_t);
 158extern int8_t udf_next_aext(struct inode *, struct extent_position *,
 159                            struct kernel_lb_addr *, uint32_t *, int);
 160extern int8_t udf_current_aext(struct inode *, struct extent_position *,
 161                               struct kernel_lb_addr *, uint32_t *, int);
 162
 163/* misc.c */
 164extern struct buffer_head *udf_tgetblk(struct super_block *, int);
 165extern struct buffer_head *udf_tread(struct super_block *, int);
 166extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
 167                                                  uint32_t, uint8_t);
 168extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
 169                                                  uint8_t);
 170extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
 171                                           uint32_t, uint16_t *);
 172extern struct buffer_head *udf_read_ptagged(struct super_block *,
 173                                            struct kernel_lb_addr *, uint32_t,
 174                                            uint16_t *);
 175extern void udf_update_tag(char *, int);
 176extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
 177
 178/* lowlevel.c */
 179extern unsigned int udf_get_last_session(struct super_block *);
 180extern unsigned long udf_get_last_block(struct super_block *);
 181
 182/* partition.c */
 183extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
 184                               uint32_t);
 185extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
 186                                      uint32_t);
 187extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
 188                                      uint32_t);
 189extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
 190                                      uint32_t);
 191extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
 192                                          uint32_t);
 193extern int udf_relocate_blocks(struct super_block *, long, long *);
 194
 195static inline uint32_t
 196udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
 197                  uint32_t offset)
 198{
 199        return udf_get_pblock(sb, loc->logicalBlockNum,
 200                        loc->partitionReferenceNum, offset);
 201}
 202
 203/* unicode.c */
 204extern int udf_get_filename(struct super_block *, uint8_t *, uint8_t *, int);
 205extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
 206                            int);
 207extern int udf_build_ustr(struct ustr *, dstring *, int);
 208extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);
 209
 210/* ialloc.c */
 211extern void udf_free_inode(struct inode *);
 212extern struct inode *udf_new_inode(struct inode *, umode_t, int *);
 213
 214/* truncate.c */
 215extern void udf_truncate_tail_extent(struct inode *);
 216extern void udf_discard_prealloc(struct inode *);
 217extern void udf_truncate_extents(struct inode *);
 218
 219/* balloc.c */
 220extern void udf_free_blocks(struct super_block *, struct inode *,
 221                            struct kernel_lb_addr *, uint32_t, uint32_t);
 222extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
 223                               uint32_t, uint32_t);
 224extern int udf_new_block(struct super_block *, struct inode *, uint16_t,
 225                         uint32_t, int *);
 226
 227/* directory.c */
 228extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
 229                                                struct udf_fileident_bh *,
 230                                                struct fileIdentDesc *,
 231                                                struct extent_position *,
 232                                                struct kernel_lb_addr *, uint32_t *,
 233                                                sector_t *);
 234extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
 235                                               int *offset);
 236extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
 237extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
 238
 239/* udftime.c */
 240extern struct timespec *udf_disk_stamp_to_time(struct timespec *dest,
 241                                                struct timestamp src);
 242extern struct timestamp *udf_time_to_disk_stamp(struct timestamp *dest, struct timespec src);
 243
 244#endif                          /* __UDF_DECL_H */
 245
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