1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __LINUX_UDF_SB_H 3 #define __LINUX_UDF_SB_H 4 5 #include <linux/mutex.h> 6 #include <linux/bitops.h> 7 #include <linux/magic.h> 8 9 /* 10 * Even UDF 2.6 media should have version <= 0x250 but apparently there are 11 * some broken filesystems with version set to 0x260. Accommodate those. 12 */ 13 #define UDF_MAX_READ_VERSION 0x0260 14 #define UDF_MAX_WRITE_VERSION 0x0201 15 16 #define UDF_FLAG_USE_EXTENDED_FE 0 17 #define UDF_VERS_USE_EXTENDED_FE 0x0200 18 #define UDF_FLAG_USE_STREAMS 1 19 #define UDF_VERS_USE_STREAMS 0x0200 20 #define UDF_FLAG_USE_SHORT_AD 2 21 #define UDF_FLAG_USE_AD_IN_ICB 3 22 #define UDF_FLAG_USE_FILE_CTIME_EA 4 23 #define UDF_FLAG_STRICT 5 24 #define UDF_FLAG_UNDELETE 6 25 #define UDF_FLAG_UNHIDE 7 26 #define UDF_FLAG_VARCONV 8 27 #define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */ 28 #define UDF_FLAG_GID_FORGET 12 29 #define UDF_FLAG_UID_SET 13 30 #define UDF_FLAG_GID_SET 14 31 #define UDF_FLAG_SESSION_SET 15 32 #define UDF_FLAG_LASTBLOCK_SET 16 33 #define UDF_FLAG_BLOCKSIZE_SET 17 34 #define UDF_FLAG_INCONSISTENT 18 35 #define UDF_FLAG_RW_INCOMPAT 19 /* Set when we find RW incompatible 36 * feature */ 37 38 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001 39 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002 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 ((umode_t)-1) 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 /* 65 * Partition Reference Number of the associated physical / sparable 66 * partition 67 */ 68 __u16 s_phys_partition_ref; 69 int s_flags; 70 struct inode *s_metadata_fe; 71 struct inode *s_mirror_fe; 72 struct inode *s_bitmap_fe; 73 }; 74 75 struct udf_sparing_data { 76 __u16 s_packet_len; 77 struct buffer_head *s_spar_map[4]; 78 }; 79 80 struct udf_virtual_data { 81 __u32 s_num_entries; 82 __u16 s_start_offset; 83 }; 84 85 struct udf_bitmap { 86 __u32 s_extPosition; 87 int s_nr_groups; 88 struct buffer_head *s_block_bitmap[]; 89 }; 90 91 struct udf_part_map { 92 union { 93 struct udf_bitmap *s_bitmap; 94 struct inode *s_table; 95 } s_uspace; 96 __u32 s_partition_root; 97 __u32 s_partition_len; 98 __u16 s_partition_type; 99 __u16 s_partition_num; 100 union { 101 struct udf_sparing_data s_sparing; 102 struct udf_virtual_data s_virtual; 103 struct udf_meta_data s_metadata; 104 } s_type_specific; 105 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32); 106 __u16 s_volumeseqnum; 107 __u16 s_partition_flags; 108 }; 109 110 #pragma pack() 111 112 struct udf_sb_info { 113 struct udf_part_map *s_partmaps; 114 __u8 s_volume_ident[32]; 115 116 /* Overall info */ 117 __u16 s_partitions; 118 __u16 s_partition; 119 120 /* Sector headers */ 121 __s32 s_session; 122 __u32 s_anchor; 123 __u32 s_last_block; 124 125 struct buffer_head *s_lvid_bh; 126 127 /* Default permissions */ 128 umode_t s_umask; 129 kgid_t s_gid; 130 kuid_t s_uid; 131 umode_t s_fmode; 132 umode_t s_dmode; 133 /* Lock protecting consistency of above permission settings */ 134 rwlock_t s_cred_lock; 135 136 /* Root Info */ 137 struct timespec64 s_record_time; 138 139 /* Fileset Info */ 140 __u16 s_serial_number; 141 142 /* highest UDF revision we have recorded to this media */ 143 __u16 s_udfrev; 144 145 /* Miscellaneous flags */ 146 unsigned long s_flags; 147 148 /* Encoding info */ 149 struct nls_table *s_nls_map; 150 151 /* VAT inode */ 152 struct inode *s_vat_inode; 153 154 struct mutex s_alloc_mutex; 155 /* Protected by s_alloc_mutex */ 156 unsigned int s_lvid_dirty; 157 }; 158 159 static inline struct udf_sb_info *UDF_SB(struct super_block *sb) 160 { 161 return sb->s_fs_info; 162 } 163 164 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb); 165 166 int udf_compute_nr_groups(struct super_block *sb, u32 partition); 167 168 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag) 169 { 170 return test_bit(flag, &UDF_SB(sb)->s_flags); 171 } 172 173 static inline void UDF_SET_FLAG(struct super_block *sb, int flag) 174 { 175 set_bit(flag, &UDF_SB(sb)->s_flags); 176 } 177 178 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag) 179 { 180 clear_bit(flag, &UDF_SB(sb)->s_flags); 181 } 182 183 #endif /* __LINUX_UDF_SB_H */ 184