1 #ifndef __LINUX_UDF_SB_H 2 #define __LINUX_UDF_SB_H 3 4 /* Since UDF 2.01 is ISO 13346 based... */ 5 #define UDF_SUPER_MAGIC 0x15013346 6 7 #define UDF_MAX_READ_VERSION 0x0201 8 #define UDF_MAX_WRITE_VERSION 0x0201 9 10 #define UDF_FLAG_USE_EXTENDED_FE 0 11 #define UDF_VERS_USE_EXTENDED_FE 0x0200 12 #define UDF_FLAG_USE_STREAMS 1 13 #define UDF_VERS_USE_STREAMS 0x0200 14 #define UDF_FLAG_USE_SHORT_AD 2 15 #define UDF_FLAG_USE_AD_IN_ICB 3 16 #define UDF_FLAG_USE_FILE_CTIME_EA 4 17 #define UDF_FLAG_STRICT 5 18 #define UDF_FLAG_UNDELETE 6 19 #define UDF_FLAG_UNHIDE 7 20 #define UDF_FLAG_VARCONV 8 21 #define UDF_FLAG_NLS_MAP 9 22 #define UDF_FLAG_UTF8 10 23 24 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001 25 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002 26 #define UDF_PART_FLAG_FREED_BITMAP 0x0004 27 #define UDF_PART_FLAG_FREED_TABLE 0x0008 28 #define UDF_PART_FLAG_READ_ONLY 0x0010 29 #define UDF_PART_FLAG_WRITE_ONCE 0x0020 30 #define UDF_PART_FLAG_REWRITABLE 0x0040 31 #define UDF_PART_FLAG_OVERWRITABLE 0x0080 32 33 static inline struct udf_sb_info *UDF_SB(struct super_block *sb) 34 { 35 return sb->s_fs_info; 36 } 37 38 #define UDF_SB_FREE(X)\ 39 {\ 40 if (UDF_SB(X))\ 41 {\ 42 if (UDF_SB_PARTMAPS(X))\ 43 kfree(UDF_SB_PARTMAPS(X));\ 44 UDF_SB_PARTMAPS(X) = NULL;\ 45 }\ 46 } 47 48 #define UDF_SB_ALLOC_PARTMAPS(X,Y)\ 49 {\ 50 UDF_SB_PARTMAPS(X) = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\ 51 if (UDF_SB_PARTMAPS(X) != NULL)\ 52 {\ 53 UDF_SB_NUMPARTS(X) = Y;\ 54 memset(UDF_SB_PARTMAPS(X), 0x00, sizeof(struct udf_part_map) * Y);\ 55 }\ 56 else\ 57 {\ 58 UDF_SB_NUMPARTS(X) = 0;\ 59 udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\ 60 }\ 61 } 62 63 #define UDF_SB_ALLOC_BITMAP(X,Y,Z)\ 64 {\ 65 int nr_groups = ((UDF_SB_PARTLEN((X),(Y)) + (sizeof(struct spaceBitmapDesc) << 3) +\ 66 ((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));\ 67 int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\ 68 if (size <= PAGE_SIZE)\ 69 UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\ 70 else\ 71 UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = vmalloc(size);\ 72 if (UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap != NULL)\ 73 {\ 74 memset(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap, 0x00, size);\ 75 UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap =\ 76 (struct buffer_head **)(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap + 1);\ 77 UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\ 78 }\ 79 else\ 80 {\ 81 udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);\ 82 }\ 83 } 84 85 #define UDF_SB_FREE_BITMAP(X,Y,Z)\ 86 {\ 87 int i;\ 88 int nr_groups = UDF_SB_BITMAP_NR_GROUPS(X,Y,Z);\ 89 int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\ 90 for (i=0; i<nr_groups; i++)\ 91 {\ 92 if (UDF_SB_BITMAP(X,Y,Z,i))\ 93 udf_release_data(UDF_SB_BITMAP(X,Y,Z,i));\ 94 }\ 95 if (size <= PAGE_SIZE)\ 96 kfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\ 97 else\ 98 vfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\ 99 } 100 101 #define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) ) 102 #define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) ) 103 #define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) ) 104 105 #define UDF_UPDATE_UDFREV(X,Y) ( ((Y) > UDF_SB_UDFREV(X)) ? UDF_SB_UDFREV(X) = (Y) : UDF_SB_UDFREV(X) ) 106 107 #define UDF_SB_PARTMAPS(X) ( UDF_SB(X)->s_partmaps ) 108 #define UDF_SB_PARTTYPE(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_type ) 109 #define UDF_SB_PARTROOT(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_root ) 110 #define UDF_SB_PARTLEN(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_len ) 111 #define UDF_SB_PARTVSN(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_volumeseqnum ) 112 #define UDF_SB_PARTNUM(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_num ) 113 #define UDF_SB_TYPESPAR(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_sparing ) 114 #define UDF_SB_TYPEVIRT(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_virtual ) 115 #define UDF_SB_PARTFUNC(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_func ) 116 #define UDF_SB_PARTFLAGS(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_flags ) 117 #define UDF_SB_BITMAP(X,Y,Z,I) ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap[I] ) 118 #define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z) ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups ) 119 120 #define UDF_SB_VOLIDENT(X) ( UDF_SB(X)->s_volident ) 121 #define UDF_SB_NUMPARTS(X) ( UDF_SB(X)->s_partitions ) 122 #define UDF_SB_PARTITION(X) ( UDF_SB(X)->s_partition ) 123 #define UDF_SB_SESSION(X) ( UDF_SB(X)->s_session ) 124 #define UDF_SB_ANCHOR(X) ( UDF_SB(X)->s_anchor ) 125 #define UDF_SB_LASTBLOCK(X) ( UDF_SB(X)->s_lastblock ) 126 #define UDF_SB_LVIDBH(X) ( UDF_SB(X)->s_lvidbh ) 127 #define UDF_SB_LVID(X) ( (struct logicalVolIntegrityDesc *)UDF_SB_LVIDBH(X)->b_data ) 128 #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)]) ) 129 130 #define UDF_SB_UMASK(X) ( UDF_SB(X)->s_umask ) 131 #define UDF_SB_GID(X) ( UDF_SB(X)->s_gid ) 132 #define UDF_SB_UID(X) ( UDF_SB(X)->s_uid ) 133 #define UDF_SB_RECORDTIME(X) ( UDF_SB(X)->s_recordtime ) 134 #define UDF_SB_SERIALNUM(X) ( UDF_SB(X)->s_serialnum ) 135 #define UDF_SB_UDFREV(X) ( UDF_SB(X)->s_udfrev ) 136 #define UDF_SB_FLAGS(X) ( UDF_SB(X)->s_flags ) 137 #define UDF_SB_VAT(X) ( UDF_SB(X)->s_vat ) 138 139 #endif /* __LINUX_UDF_SB_H */ 140