udfdecl.h

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#ifndef __UDF_DECL_H
#define __UDF_DECL_H

#define pr_fmt(fmt) "UDF-fs: " fmt

#include "ecma_167.h"
#include "osta_udf.h"

#include <linux/fs.h>
#include <linux/types.h>
#include <linux/buffer_head.h>
#include <linux/udf_fs_i.h>

#include "udf_sb.h"
#include "udfend.h"
#include "udf_i.h"

#define UDF_PREALLOCATE
#define UDF_DEFAULT_PREALLOC_BLOCKS 8

extern __printf(3, 4) void _udf_err(struct super_block *sb,
        const char *function, const char *fmt, ...);
#define udf_err(sb, fmt, ...)                   \
    _udf_err(sb, __func__, fmt, ##__VA_ARGS__)

extern __printf(3, 4) void _udf_warn(struct super_block *sb,
        const char *function, const char *fmt, ...);
#define udf_warn(sb, fmt, ...)                  \
    _udf_warn(sb, __func__, fmt, ##__VA_ARGS__)

#define udf_info(fmt, ...)                  \
    pr_info("INFO " fmt, ##__VA_ARGS__)

#undef UDFFS_DEBUG

#ifdef UDFFS_DEBUG
#define udf_debug(fmt, ...)                 \
    printk(KERN_DEBUG pr_fmt("%s:%d:%s: " fmt),     \
           __FILE__, __LINE__, __func__, ##__VA_ARGS__)
#else
#define udf_debug(fmt, ...)                 \
    no_printk(fmt, ##__VA_ARGS__)
#endif

#define udf_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) )
#define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) )

#define UDF_EXTENT_LENGTH_MASK  0x3FFFFFFF
#define UDF_EXTENT_FLAG_MASK    0xC0000000

#define UDF_NAME_PAD        4
#define UDF_NAME_LEN        256
#define UDF_PATH_LEN        1023

static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
{
    struct udf_inode_info *iinfo = UDF_I(inode);
    if (iinfo->i_use)
        return sizeof(struct unallocSpaceEntry);
    else if (iinfo->i_efe)
        return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr;
    else
        return sizeof(struct fileEntry) + iinfo->i_lenEAttr;
}

static inline size_t udf_ext0_offset(struct inode *inode)
{
    if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
        return udf_file_entry_alloc_offset(inode);
    else
        return 0;
}

/* computes tag checksum */
u8 udf_tag_checksum(const struct tag *t);

struct dentry;
struct inode;
struct task_struct;
struct buffer_head;
struct super_block;

extern const struct export_operations udf_export_ops;
extern const struct inode_operations udf_dir_inode_operations;
extern const struct file_operations udf_dir_operations;
extern const struct inode_operations udf_file_inode_operations;
extern const struct file_operations udf_file_operations;
extern const struct inode_operations udf_symlink_inode_operations;
extern const struct address_space_operations udf_aops;
extern const struct address_space_operations udf_adinicb_aops;
extern const struct address_space_operations udf_symlink_aops;

struct udf_fileident_bh {
    struct buffer_head *sbh;
    struct buffer_head *ebh;
    int soffset;
    int eoffset;
};

struct udf_vds_record {
    uint32_t block;
    uint32_t volDescSeqNum;
};

struct generic_desc {
    struct tag  descTag;
    __le32      volDescSeqNum;
};

struct ustr {
    uint8_t u_cmpID;
    uint8_t u_name[UDF_NAME_LEN - 2];
    uint8_t u_len;
};

struct extent_position {
    struct buffer_head *bh;
    uint32_t offset;
    struct kernel_lb_addr block;
};

/* super.c */

static inline void udf_updated_lvid(struct super_block *sb)
{
    struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;

    BUG_ON(!bh);
    WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
             bh->b_data)->integrityType !=
             cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
    UDF_SB(sb)->s_lvid_dirty = 1;
}
extern u64 lvid_get_unique_id(struct super_block *sb);
struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
                    u32 meta_file_loc, u32 partition_num);

/* namei.c */
extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
            struct fileIdentDesc *, struct udf_fileident_bh *,
            uint8_t *, uint8_t *);

/* file.c */
extern long udf_ioctl(struct file *, unsigned int, unsigned long);
/* inode.c */
extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
extern int udf_expand_file_adinicb(struct inode *);
extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
extern struct buffer_head *udf_bread(struct inode *, int, int, int *);
extern int udf_setsize(struct inode *, loff_t);
extern void udf_read_inode(struct inode *);
extern void udf_evict_inode(struct inode *);
extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
extern long udf_block_map(struct inode *, sector_t);
extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
             struct kernel_lb_addr *, uint32_t *, sector_t *);
extern int udf_add_aext(struct inode *, struct extent_position *,
            struct kernel_lb_addr *, uint32_t, int);
extern void udf_write_aext(struct inode *, struct extent_position *,
               struct kernel_lb_addr *, uint32_t, int);
extern int8_t udf_delete_aext(struct inode *, struct extent_position,
                  struct kernel_lb_addr, uint32_t);
extern int8_t udf_next_aext(struct inode *, struct extent_position *,
                struct kernel_lb_addr *, uint32_t *, int);
extern int8_t udf_current_aext(struct inode *, struct extent_position *,
                   struct kernel_lb_addr *, uint32_t *, int);

/* misc.c */
extern struct buffer_head *udf_tgetblk(struct super_block *, int);
extern struct buffer_head *udf_tread(struct super_block *, int);
extern struct genericFormat *udf_add_extendedattr(struct inode *, uint32_t,
                          uint32_t, uint8_t);
extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
                          uint8_t);
extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
                       uint32_t, uint16_t *);
extern struct buffer_head *udf_read_ptagged(struct super_block *,
                        struct kernel_lb_addr *, uint32_t,
                        uint16_t *);
extern void udf_update_tag(char *, int);
extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);

/* lowlevel.c */
extern unsigned int udf_get_last_session(struct super_block *);
extern unsigned long udf_get_last_block(struct super_block *);

/* partition.c */
extern uint32_t udf_get_pblock(struct super_block *, uint32_t, uint16_t,
                   uint32_t);
extern uint32_t udf_get_pblock_virt15(struct super_block *, uint32_t, uint16_t,
                      uint32_t);
extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
                      uint32_t);
extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
                      uint32_t);
extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
                      uint32_t);
extern int udf_relocate_blocks(struct super_block *, long, long *);

static inline uint32_t
udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
          uint32_t offset)
{
    return udf_get_pblock(sb, loc->logicalBlockNum,
            loc->partitionReferenceNum, offset);
}

/* unicode.c */
extern int udf_get_filename(struct super_block *, uint8_t *, uint8_t *, int);
extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
                int);
extern int udf_build_ustr(struct ustr *, dstring *, int);
extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);

/* ialloc.c */
extern void udf_free_inode(struct inode *);
extern struct inode *udf_new_inode(struct inode *, umode_t, int *);

/* truncate.c */
extern void udf_truncate_tail_extent(struct inode *);
extern void udf_discard_prealloc(struct inode *);
extern void udf_truncate_extents(struct inode *);

/* balloc.c */
extern void udf_free_blocks(struct super_block *, struct inode *,
                struct kernel_lb_addr *, uint32_t, uint32_t);
extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
                   uint32_t, uint32_t);
extern int udf_new_block(struct super_block *, struct inode *, uint16_t,
             uint32_t, int *);

/* directory.c */
extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
                        struct udf_fileident_bh *,
                        struct fileIdentDesc *,
                        struct extent_position *,
                        struct kernel_lb_addr *, uint32_t *,
                        sector_t *);
extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
                           int *offset);
extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);

/* udftime.c */
extern struct timespec *udf_disk_stamp_to_time(struct timespec *dest,
                        struct timestamp src);
extern struct timestamp *udf_time_to_disk_stamp(struct timestamp *dest, struct timespec src);

#endif              /* __UDF_DECL_H */