140 lines
5.1 KiB
C
140 lines
5.1 KiB
C
#ifndef __LINUX_UDF_SB_H
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#define __LINUX_UDF_SB_H
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/* Since UDF 2.01 is ISO 13346 based... */
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#define UDF_SUPER_MAGIC 0x15013346
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#define UDF_MAX_READ_VERSION 0x0201
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#define UDF_MAX_WRITE_VERSION 0x0201
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#define UDF_FLAG_USE_EXTENDED_FE 0
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#define UDF_VERS_USE_EXTENDED_FE 0x0200
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#define UDF_FLAG_USE_STREAMS 1
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#define UDF_VERS_USE_STREAMS 0x0200
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#define UDF_FLAG_USE_SHORT_AD 2
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#define UDF_FLAG_USE_AD_IN_ICB 3
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#define UDF_FLAG_USE_FILE_CTIME_EA 4
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#define UDF_FLAG_STRICT 5
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#define UDF_FLAG_UNDELETE 6
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#define UDF_FLAG_UNHIDE 7
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#define UDF_FLAG_VARCONV 8
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#define UDF_FLAG_NLS_MAP 9
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#define UDF_FLAG_UTF8 10
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#define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
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#define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
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#define UDF_PART_FLAG_FREED_BITMAP 0x0004
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#define UDF_PART_FLAG_FREED_TABLE 0x0008
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#define UDF_PART_FLAG_READ_ONLY 0x0010
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#define UDF_PART_FLAG_WRITE_ONCE 0x0020
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#define UDF_PART_FLAG_REWRITABLE 0x0040
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#define UDF_PART_FLAG_OVERWRITABLE 0x0080
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static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
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{
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return sb->s_fs_info;
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}
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#define UDF_SB_FREE(X)\
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{\
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if (UDF_SB(X))\
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{\
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if (UDF_SB_PARTMAPS(X))\
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kfree(UDF_SB_PARTMAPS(X));\
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UDF_SB_PARTMAPS(X) = NULL;\
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}\
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}
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#define UDF_SB_ALLOC_PARTMAPS(X,Y)\
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{\
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UDF_SB_PARTMAPS(X) = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\
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if (UDF_SB_PARTMAPS(X) != NULL)\
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{\
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UDF_SB_NUMPARTS(X) = Y;\
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memset(UDF_SB_PARTMAPS(X), 0x00, sizeof(struct udf_part_map) * Y);\
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}\
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else\
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{\
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UDF_SB_NUMPARTS(X) = 0;\
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udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\
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}\
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}
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#define UDF_SB_ALLOC_BITMAP(X,Y,Z)\
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{\
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int nr_groups = ((UDF_SB_PARTLEN((X),(Y)) + (sizeof(struct spaceBitmapDesc) << 3) +\
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((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));\
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int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
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if (size <= PAGE_SIZE)\
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UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\
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else\
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UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = vmalloc(size);\
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if (UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap != NULL)\
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{\
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memset(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap, 0x00, size);\
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UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap =\
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(struct buffer_head **)(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap + 1);\
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UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\
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}\
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else\
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{\
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udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);\
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}\
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}
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#define UDF_SB_FREE_BITMAP(X,Y,Z)\
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{\
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int i;\
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int nr_groups = UDF_SB_BITMAP_NR_GROUPS(X,Y,Z);\
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int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
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for (i=0; i<nr_groups; i++)\
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{\
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if (UDF_SB_BITMAP(X,Y,Z,i))\
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udf_release_data(UDF_SB_BITMAP(X,Y,Z,i));\
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}\
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if (size <= PAGE_SIZE)\
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kfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
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else\
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vfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
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}
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#define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
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#define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
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#define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
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#define UDF_UPDATE_UDFREV(X,Y) ( ((Y) > UDF_SB_UDFREV(X)) ? UDF_SB_UDFREV(X) = (Y) : UDF_SB_UDFREV(X) )
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#define UDF_SB_PARTMAPS(X) ( UDF_SB(X)->s_partmaps )
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#define UDF_SB_PARTTYPE(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_type )
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#define UDF_SB_PARTROOT(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_root )
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#define UDF_SB_PARTLEN(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_len )
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#define UDF_SB_PARTVSN(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_volumeseqnum )
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#define UDF_SB_PARTNUM(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_num )
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#define UDF_SB_TYPESPAR(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_sparing )
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#define UDF_SB_TYPEVIRT(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_virtual )
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#define UDF_SB_PARTFUNC(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_func )
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#define UDF_SB_PARTFLAGS(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_flags )
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#define UDF_SB_BITMAP(X,Y,Z,I) ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap[I] )
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#define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z) ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups )
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#define UDF_SB_VOLIDENT(X) ( UDF_SB(X)->s_volident )
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#define UDF_SB_NUMPARTS(X) ( UDF_SB(X)->s_partitions )
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#define UDF_SB_PARTITION(X) ( UDF_SB(X)->s_partition )
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#define UDF_SB_SESSION(X) ( UDF_SB(X)->s_session )
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#define UDF_SB_ANCHOR(X) ( UDF_SB(X)->s_anchor )
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#define UDF_SB_LASTBLOCK(X) ( UDF_SB(X)->s_lastblock )
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#define UDF_SB_LVIDBH(X) ( UDF_SB(X)->s_lvidbh )
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#define UDF_SB_LVID(X) ( (struct logicalVolIntegrityDesc *)UDF_SB_LVIDBH(X)->b_data )
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#define UDF_SB_LVIDIU(X) ( (struct logicalVolIntegrityDescImpUse *)&(UDF_SB_LVID(X)->impUse[le32_to_cpu(UDF_SB_LVID(X)->numOfPartitions) * 2 * sizeof(uint32_t)/sizeof(uint8_t)]) )
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#define UDF_SB_UMASK(X) ( UDF_SB(X)->s_umask )
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#define UDF_SB_GID(X) ( UDF_SB(X)->s_gid )
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#define UDF_SB_UID(X) ( UDF_SB(X)->s_uid )
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#define UDF_SB_RECORDTIME(X) ( UDF_SB(X)->s_recordtime )
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#define UDF_SB_SERIALNUM(X) ( UDF_SB(X)->s_serialnum )
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#define UDF_SB_UDFREV(X) ( UDF_SB(X)->s_udfrev )
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#define UDF_SB_FLAGS(X) ( UDF_SB(X)->s_flags )
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#define UDF_SB_VAT(X) ( UDF_SB(X)->s_vat )
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#endif /* __LINUX_UDF_SB_H */
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