1 #ifndef __LINUX_UDF_SB_H 2 #define __LINUX_UDF_SB_H 3 4 #include <linux/mutex.h> 5 #include <linux/bitops.h> 6 7 /* Since UDF 2.01 is ISO 13346 based... */ 8 #define UDF_SUPER_MAGIC 0x15013346 9 10 #define UDF_MAX_READ_VERSION 0x0250 11 #define UDF_MAX_WRITE_VERSION 0x0201 12 13 #define UDF_FLAG_USE_EXTENDED_FE 0 14 #define UDF_VERS_USE_EXTENDED_FE 0x0200 15 #define UDF_FLAG_USE_STREAMS 1 16 #define UDF_VERS_USE_STREAMS 0x0200 17 #define UDF_FLAG_USE_SHORT_AD 2 18 #define UDF_FLAG_USE_AD_IN_ICB 3 19 #define UDF_FLAG_USE_FILE_CTIME_EA 4 20 #define UDF_FLAG_STRICT 5 21 #define UDF_FLAG_UNDELETE 6 22 #define UDF_FLAG_UNHIDE 7 23 #define UDF_FLAG_VARCONV 8 24 #define UDF_FLAG_NLS_MAP 9 25 #define UDF_FLAG_UTF8 10 26 #define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */ 27 #define UDF_FLAG_UID_IGNORE 12 /* use sb uid instead of on disk uid */ 28 #define UDF_FLAG_GID_FORGET 13 29 #define UDF_FLAG_GID_IGNORE 14 30 #define UDF_FLAG_UID_SET 15 31 #define UDF_FLAG_GID_SET 16 32 #define UDF_FLAG_SESSION_SET 17 33 #define UDF_FLAG_LASTBLOCK_SET 18 34 #define UDF_FLAG_BLOCKSIZE_SET 19 35 36 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001 37 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002 38 #define UDF_PART_FLAG_FREED_BITMAP 0x0004 39 #define UDF_PART_FLAG_FREED_TABLE 0x0008 40 #define UDF_PART_FLAG_READ_ONLY 0x0010 41 #define UDF_PART_FLAG_WRITE_ONCE 0x0020 42 #define UDF_PART_FLAG_REWRITABLE 0x0040 43 #define UDF_PART_FLAG_OVERWRITABLE 0x0080 44 45 #define UDF_MAX_BLOCK_LOADED 8 46 47 #define UDF_TYPE1_MAP15 0x1511U 48 #define UDF_VIRTUAL_MAP15 0x1512U 49 #define UDF_VIRTUAL_MAP20 0x2012U 50 #define UDF_SPARABLE_MAP15 0x1522U 51 #define UDF_METADATA_MAP25 0x2511U 52 53 #define UDF_INVALID_MODE ((mode_t)-1) 54 55 #pragma pack(1) /* XXX(hch): Why? This file just defines in-core structures */ 56 57 struct udf_meta_data { 58 __u32 s_meta_file_loc; 59 __u32 s_mirror_file_loc; 60 __u32 s_bitmap_file_loc; 61 __u32 s_alloc_unit_size; 62 __u16 s_align_unit_size; 63 __u8 s_dup_md_flag; 64 struct inode *s_metadata_fe; 65 struct inode *s_mirror_fe; 66 struct inode *s_bitmap_fe; 67 }; 68 69 struct udf_sparing_data { 70 __u16 s_packet_len; 71 struct buffer_head *s_spar_map[4]; 72 }; 73 74 struct udf_virtual_data { 75 __u32 s_num_entries; 76 __u16 s_start_offset; 77 }; 78 79 struct udf_bitmap { 80 __u32 s_extLength; 81 __u32 s_extPosition; 82 __u16 s_nr_groups; 83 struct buffer_head **s_block_bitmap; 84 }; 85 86 struct udf_part_map { 87 union { 88 struct udf_bitmap *s_bitmap; 89 struct inode *s_table; 90 } s_uspace; 91 union { 92 struct udf_bitmap *s_bitmap; 93 struct inode *s_table; 94 } s_fspace; 95 __u32 s_partition_root; 96 __u32 s_partition_len; 97 __u16 s_partition_type; 98 __u16 s_partition_num; 99 union { 100 struct udf_sparing_data s_sparing; 101 struct udf_virtual_data s_virtual; 102 struct udf_meta_data s_metadata; 103 } s_type_specific; 104 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32); 105 __u16 s_volumeseqnum; 106 __u16 s_partition_flags; 107 }; 108 109 #pragma pack() 110 111 struct udf_sb_info { 112 struct udf_part_map *s_partmaps; 113 __u8 s_volume_ident[32]; 114 115 /* Overall info */ 116 __u16 s_partitions; 117 __u16 s_partition; 118 119 /* Sector headers */ 120 __s32 s_session; 121 __u32 s_anchor; 122 __u32 s_last_block; 123 124 struct buffer_head *s_lvid_bh; 125 126 /* Default permissions */ 127 mode_t s_umask; 128 gid_t s_gid; 129 uid_t s_uid; 130 mode_t s_fmode; 131 mode_t s_dmode; 132 /* Lock protecting consistency of above permission settings */ 133 rwlock_t s_cred_lock; 134 135 /* Root Info */ 136 struct timespec s_record_time; 137 138 /* Fileset Info */ 139 __u16 s_serial_number; 140 141 /* highest UDF revision we have recorded to this media */ 142 __u16 s_udfrev; 143 144 /* Miscellaneous flags */ 145 unsigned long s_flags; 146 147 /* Encoding info */ 148 struct nls_table *s_nls_map; 149 150 /* VAT inode */ 151 struct inode *s_vat_inode; 152 153 struct mutex s_alloc_mutex; 154 /* Protected by s_alloc_mutex */ 155 unsigned int s_lvid_dirty; 156 }; 157 158 static inline struct udf_sb_info *UDF_SB(struct super_block *sb) 159 { 160 return sb->s_fs_info; 161 } 162 163 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi); 164 165 int udf_compute_nr_groups(struct super_block *sb, u32 partition); 166 167 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag) 168 { 169 return test_bit(flag, &UDF_SB(sb)->s_flags); 170 } 171 172 static inline void UDF_SET_FLAG(struct super_block *sb, int flag) 173 { 174 set_bit(flag, &UDF_SB(sb)->s_flags); 175 } 176 177 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag) 178 { 179 clear_bit(flag, &UDF_SB(sb)->s_flags); 180 } 181 182 #endif /* __LINUX_UDF_SB_H */ 183