1 #ifndef __LINUX_UDF_SB_H 2 #define __LINUX_UDF_SB_H 3 4 #include <linux/mutex.h> 5 #include <linux/bitops.h> 6 #include <linux/magic.h> 7 8 #define UDF_MAX_READ_VERSION 0x0250 9 #define UDF_MAX_WRITE_VERSION 0x0201 10 11 #define UDF_FLAG_USE_EXTENDED_FE 0 12 #define UDF_VERS_USE_EXTENDED_FE 0x0200 13 #define UDF_FLAG_USE_STREAMS 1 14 #define UDF_VERS_USE_STREAMS 0x0200 15 #define UDF_FLAG_USE_SHORT_AD 2 16 #define UDF_FLAG_USE_AD_IN_ICB 3 17 #define UDF_FLAG_USE_FILE_CTIME_EA 4 18 #define UDF_FLAG_STRICT 5 19 #define UDF_FLAG_UNDELETE 6 20 #define UDF_FLAG_UNHIDE 7 21 #define UDF_FLAG_VARCONV 8 22 #define UDF_FLAG_NLS_MAP 9 23 #define UDF_FLAG_UTF8 10 24 #define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */ 25 #define UDF_FLAG_UID_IGNORE 12 /* use sb uid instead of on disk uid */ 26 #define UDF_FLAG_GID_FORGET 13 27 #define UDF_FLAG_GID_IGNORE 14 28 #define UDF_FLAG_UID_SET 15 29 #define UDF_FLAG_GID_SET 16 30 #define UDF_FLAG_SESSION_SET 17 31 #define UDF_FLAG_LASTBLOCK_SET 18 32 #define UDF_FLAG_BLOCKSIZE_SET 19 33 34 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001 35 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002 36 #define UDF_PART_FLAG_FREED_BITMAP 0x0004 37 #define UDF_PART_FLAG_FREED_TABLE 0x0008 38 #define UDF_PART_FLAG_READ_ONLY 0x0010 39 #define UDF_PART_FLAG_WRITE_ONCE 0x0020 40 #define UDF_PART_FLAG_REWRITABLE 0x0040 41 #define UDF_PART_FLAG_OVERWRITABLE 0x0080 42 43 #define UDF_MAX_BLOCK_LOADED 8 44 45 #define UDF_TYPE1_MAP15 0x1511U 46 #define UDF_VIRTUAL_MAP15 0x1512U 47 #define UDF_VIRTUAL_MAP20 0x2012U 48 #define UDF_SPARABLE_MAP15 0x1522U 49 #define UDF_METADATA_MAP25 0x2511U 50 51 #define UDF_INVALID_MODE ((umode_t)-1) 52 53 #pragma pack(1) /* XXX(hch): Why? This file just defines in-core structures */ 54 55 #define MF_DUPLICATE_MD 0x01 56 #define MF_MIRROR_FE_LOADED 0x02 57 58 struct udf_meta_data { 59 __u32 s_meta_file_loc; 60 __u32 s_mirror_file_loc; 61 __u32 s_bitmap_file_loc; 62 __u32 s_alloc_unit_size; 63 __u16 s_align_unit_size; 64 int s_flags; 65 struct inode *s_metadata_fe; 66 struct inode *s_mirror_fe; 67 struct inode *s_bitmap_fe; 68 }; 69 70 struct udf_sparing_data { 71 __u16 s_packet_len; 72 struct buffer_head *s_spar_map[4]; 73 }; 74 75 struct udf_virtual_data { 76 __u32 s_num_entries; 77 __u16 s_start_offset; 78 }; 79 80 struct udf_bitmap { 81 __u32 s_extPosition; 82 int s_nr_groups; 83 struct buffer_head *s_block_bitmap[0]; 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 umode_t s_umask; 128 kgid_t s_gid; 129 kuid_t s_uid; 130 umode_t s_fmode; 131 umode_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 super_block *sb); 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