| 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 */ |