udf_sb.h
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上传日期:2013-02-24
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- #ifndef __LINUX_UDF_SB_H
- #define __LINUX_UDF_SB_H
- /* Since UDF 2.01 is ISO 13346 based... */
- #define UDF_SUPER_MAGIC 0x15013346
- #define UDF_MAX_READ_VERSION 0x0201
- #define UDF_MAX_WRITE_VERSION 0x0201
- #define UDF_FLAG_USE_EXTENDED_FE 0
- #define UDF_VERS_USE_EXTENDED_FE 0x0200
- #define UDF_FLAG_USE_STREAMS 1
- #define UDF_VERS_USE_STREAMS 0x0200
- #define UDF_FLAG_USE_SHORT_AD 2
- #define UDF_FLAG_USE_AD_IN_ICB 3
- #define UDF_FLAG_USE_FILE_CTIME_EA 4
- #define UDF_FLAG_STRICT 5
- #define UDF_FLAG_UNDELETE 6
- #define UDF_FLAG_UNHIDE 7
- #define UDF_FLAG_VARCONV 8
- #define UDF_FLAG_NLS_MAP 9
- #define UDF_FLAG_UTF8 10
- #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
- #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
- #define UDF_PART_FLAG_FREED_BITMAP 0x0004
- #define UDF_PART_FLAG_FREED_TABLE 0x0008
- #define UDF_SB_FREE(X)
- {
- if (UDF_SB(X))
- {
- if (UDF_SB_PARTMAPS(X))
- kfree(UDF_SB_PARTMAPS(X));
- UDF_SB_PARTMAPS(X) = NULL;
- }
- }
- #define UDF_SB(X) (&((X)->u.udf_sb))
- #define UDF_SB_ALLOC_PARTMAPS(X,Y)
- {
- UDF_SB_PARTMAPS(X) = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);
- if (UDF_SB_PARTMAPS(X) != NULL)
- {
- UDF_SB_NUMPARTS(X) = Y;
- memset(UDF_SB_PARTMAPS(X), 0x00, sizeof(struct udf_part_map) * Y);
- }
- else
- {
- UDF_SB_NUMPARTS(X) = 0;
- udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);
- }
- }
- #define UDF_SB_ALLOC_BITMAP(X,Y,Z)
- {
- int nr_groups = ((UDF_SB_PARTLEN((X),(Y)) + (sizeof(struct SpaceBitmapDesc) << 3) +
- ((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));
- UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = kmalloc(sizeof(struct udf_bitmap) +
- sizeof(struct buffer_head *) * nr_groups,
- GFP_KERNEL);
- if (UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap != NULL)
- {
- memset(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap, 0x00,
- sizeof(struct udf_bitmap) + sizeof(struct buffer_head *) * nr_groups);
- UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap =
- (struct buffer_head **)(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap + 1);
- UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;
- }
- else
- {
- udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);
- }
- }
- #define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
- #define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
- #define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
- #define UDF_UPDATE_UDFREV(X,Y) ( ((Y) > UDF_SB_UDFREV(X)) ? UDF_SB_UDFREV(X) = (Y) : UDF_SB_UDFREV(X) )
- #define UDF_SB_PARTMAPS(X) ( UDF_SB(X)->s_partmaps )
- #define UDF_SB_PARTTYPE(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_type )
- #define UDF_SB_PARTROOT(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_root )
- #define UDF_SB_PARTLEN(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_len )
- #define UDF_SB_PARTVSN(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_volumeseqnum )
- #define UDF_SB_PARTNUM(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_num )
- #define UDF_SB_TYPESPAR(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_sparing )
- #define UDF_SB_TYPEVIRT(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_virtual )
- #define UDF_SB_PARTFUNC(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_func )
- #define UDF_SB_PARTFLAGS(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_flags )
- #define UDF_SB_BITMAP(X,Y,Z,I) ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap[I] )
- #define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z) ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups )
- #define UDF_SB_VOLIDENT(X) ( UDF_SB(X)->s_volident )
- #define UDF_SB_NUMPARTS(X) ( UDF_SB(X)->s_partitions )
- #define UDF_SB_PARTITION(X) ( UDF_SB(X)->s_partition )
- #define UDF_SB_SESSION(X) ( UDF_SB(X)->s_session )
- #define UDF_SB_ANCHOR(X) ( UDF_SB(X)->s_anchor )
- #define UDF_SB_LASTBLOCK(X) ( UDF_SB(X)->s_lastblock )
- #define UDF_SB_LVIDBH(X) ( UDF_SB(X)->s_lvidbh )
- #define UDF_SB_LVID(X) ( (struct LogicalVolIntegrityDesc *)UDF_SB_LVIDBH(X)->b_data )
- #define UDF_SB_LVIDIU(X) ( (struct LogicalVolIntegrityDescImpUse *)&(UDF_SB_LVID(X)->impUse[UDF_SB_LVID(X)->numOfPartitions * 2 * sizeof(Uint32)/sizeof(Uint8)]) )
- #define UDF_SB_UMASK(X) ( UDF_SB(X)->s_umask )
- #define UDF_SB_GID(X) ( UDF_SB(X)->s_gid )
- #define UDF_SB_UID(X) ( UDF_SB(X)->s_uid )
- #define UDF_SB_RECORDTIME(X) ( UDF_SB(X)->s_recordtime )
- #define UDF_SB_SERIALNUM(X) ( UDF_SB(X)->s_serialnum )
- #define UDF_SB_UDFREV(X) ( UDF_SB(X)->s_udfrev )
- #define UDF_SB_FLAGS(X) ( UDF_SB(X)->s_flags )
- #define UDF_SB_VAT(X) ( UDF_SB(X)->s_vat )
- #endif /* __LINUX_UDF_SB_H */