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_UID_FORGET 11 /* save -1 for uid to disk */ 27 #define UDF_FLAG_GID_FORGET 12 28 #define UDF_FLAG_UID_SET 13 29 #define UDF_FLAG_GID_SET 14 30 #define UDF_FLAG_SESSION_SET 15 31 #define UDF_FLAG_LASTBLOCK_SET 16 32 #define UDF_FLAG_BLOCKSIZE_SET 17 33 #define UDF_FLAG_INCONSISTENT 18 34 #define UDF_FLAG_RW_INCOMPAT 19 /* Set when we find RW incompatible 35 * feature */ 36 37 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001 38 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002 39 #define UDF_PART_FLAG_READ_ONLY 0x0010 40 #define UDF_PART_FLAG_WRITE_ONCE 0x0020 41 #define UDF_PART_FLAG_REWRITABLE 0x0040 42 #define UDF_PART_FLAG_OVERWRITABLE 0x0080 43 44 #define UDF_MAX_BLOCK_LOADED 8 45 46 #define UDF_TYPE1_MAP15 0x1511U 47 #define UDF_VIRTUAL_MAP15 0x1512U 48 #define UDF_VIRTUAL_MAP20 0x2012U 49 #define UDF_SPARABLE_MAP15 0x1522U 50 #define UDF_METADATA_MAP25 0x2511U 51 52 #define UDF_INVALID_MODE ((umode_t)-1) 53 54 #define MF_DUPLICATE_MD 0x01 55 #define MF_MIRROR_FE_LOADED 0x02 56 57 #define EFSCORRUPTED EUCLEAN 58 59 struct udf_meta_data { 60 __u32 s_meta_file_loc; 61 __u32 s_mirror_file_loc; 62 __u32 s_bitmap_file_loc; 63 __u32 s_alloc_unit_size; 64 __u16 s_align_unit_size; 65 /* 66 * Partition Reference Number of the associated physical / sparable 67 * partition 68 */ 69 __u16 s_phys_partition_ref; 70 int s_flags; 71 struct inode *s_metadata_fe; 72 struct inode *s_mirror_fe; 73 struct inode *s_bitmap_fe; 74 }; 75 76 struct udf_sparing_data { 77 __u16 s_packet_len; 78 struct buffer_head *s_spar_map[4]; 79 }; 80 81 struct udf_virtual_data { 82 __u32 s_num_entries; 83 __u16 s_start_offset; 84 }; 85 86 struct udf_bitmap { 87 __u32 s_extPosition; 88 int s_nr_groups; 89 struct buffer_head *s_block_bitmap[] __counted_by(s_nr_groups); 90 }; 91 92 struct udf_part_map { 93 union { 94 struct udf_bitmap *s_bitmap; 95 struct inode *s_table; 96 } s_uspace; 97 __u32 s_partition_root; 98 __u32 s_partition_len; 99 __u16 s_partition_type; 100 __u16 s_partition_num; 101 union { 102 struct udf_sparing_data s_sparing; 103 struct udf_virtual_data s_virtual; 104 struct udf_meta_data s_metadata; 105 } s_type_specific; 106 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32); 107 __u16 s_volumeseqnum; 108 __u16 s_partition_flags; 109 }; 110 111 #pragma pack() 112 113 struct udf_sb_info { 114 struct udf_part_map *s_partmaps; 115 __u8 s_volume_ident[32]; 116 117 /* Overall info */ 118 __u16 s_partitions; 119 __u16 s_partition; 120 121 /* Sector headers */ 122 __s32 s_session; 123 __u32 s_anchor; 124 __u32 s_last_block; 125 126 struct buffer_head *s_lvid_bh; 127 128 /* Default permissions */ 129 umode_t s_umask; 130 kgid_t s_gid; 131 kuid_t s_uid; 132 umode_t s_fmode; 133 umode_t s_dmode; 134 /* Lock protecting consistency of above permission settings */ 135 rwlock_t s_cred_lock; 136 137 /* Root Info */ 138 struct timespec64 s_record_time; 139 140 /* Fileset Info */ 141 __u16 s_serial_number; 142 143 /* highest UDF revision we have recorded to this media */ 144 __u16 s_udfrev; 145 146 /* Miscellaneous flags */ 147 unsigned long s_flags; 148 149 /* Encoding info */ 150 struct nls_table *s_nls_map; 151 152 /* VAT inode */ 153 struct inode *s_vat_inode; 154 155 struct mutex s_alloc_mutex; 156 /* Protected by s_alloc_mutex */ 157 unsigned int s_lvid_dirty; 158 }; 159 160 static inline struct udf_sb_info *UDF_SB(struct super_block *sb) 161 { 162 return sb->s_fs_info; 163 } 164 165 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb); 166 167 int udf_compute_nr_groups(struct super_block *sb, u32 partition); 168 169 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag) 170 { 171 return test_bit(flag, &UDF_SB(sb)->s_flags); 172 } 173 174 static inline void UDF_SET_FLAG(struct super_block *sb, int flag) 175 { 176 set_bit(flag, &UDF_SB(sb)->s_flags); 177 } 178 179 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag) 180 { 181 clear_bit(flag, &UDF_SB(sb)->s_flags); 182 } 183 184 #endif /* __LINUX_UDF_SB_H */ 185