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