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 #define UDF_MAX_READ_VERSION 0x0250 10 #define UDF_MAX_WRITE_VERSION 0x0201 11 12 #define UDF_FLAG_USE_EXTENDED_FE 0 13 #define UDF_VERS_USE_EXTENDED_FE 0x0200 14 #define UDF_FLAG_USE_STREAMS 1 15 #define UDF_VERS_USE_STREAMS 0x0200 16 #define UDF_FLAG_USE_SHORT_AD 2 17 #define UDF_FLAG_USE_AD_IN_ICB 3 18 #define UDF_FLAG_USE_FILE_CTIME_EA 4 19 #define UDF_FLAG_STRICT 5 20 #define UDF_FLAG_UNDELETE 6 21 #define UDF_FLAG_UNHIDE 7 22 #define UDF_FLAG_VARCONV 8 23 #define UDF_FLAG_NLS_MAP 9 24 #define UDF_FLAG_UTF8 10 25 #define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */ 26 #define UDF_FLAG_GID_FORGET 12 27 #define UDF_FLAG_UID_SET 13 28 #define UDF_FLAG_GID_SET 14 29 #define UDF_FLAG_SESSION_SET 15 30 #define UDF_FLAG_LASTBLOCK_SET 16 31 #define UDF_FLAG_BLOCKSIZE_SET 17 32 #define UDF_FLAG_INCONSISTENT 18 33 #define UDF_FLAG_RW_INCOMPAT 19 /* Set when we find RW incompatible 34 * feature */ 35 36 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001 37 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002 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 #define MF_DUPLICATE_MD 0x01 54 #define MF_MIRROR_FE_LOADED 0x02 55 56 struct udf_meta_data { 57 __u32 s_meta_file_loc; 58 __u32 s_mirror_file_loc; 59 __u32 s_bitmap_file_loc; 60 __u32 s_alloc_unit_size; 61 __u16 s_align_unit_size; 62 /* 63 * Partition Reference Number of the associated physical / sparable 64 * partition 65 */ 66 __u16 s_phys_partition_ref; 67 int s_flags; 68 struct inode *s_metadata_fe; 69 struct inode *s_mirror_fe; 70 struct inode *s_bitmap_fe; 71 }; 72 73 struct udf_sparing_data { 74 __u16 s_packet_len; 75 struct buffer_head *s_spar_map[4]; 76 }; 77 78 struct udf_virtual_data { 79 __u32 s_num_entries; 80 __u16 s_start_offset; 81 }; 82 83 struct udf_bitmap { 84 __u32 s_extPosition; 85 int s_nr_groups; 86 struct buffer_head *s_block_bitmap[]; 87 }; 88 89 struct udf_part_map { 90 union { 91 struct udf_bitmap *s_bitmap; 92 struct inode *s_table; 93 } s_uspace; 94 __u32 s_partition_root; 95 __u32 s_partition_len; 96 __u16 s_partition_type; 97 __u16 s_partition_num; 98 union { 99 struct udf_sparing_data s_sparing; 100 struct udf_virtual_data s_virtual; 101 struct udf_meta_data s_metadata; 102 } s_type_specific; 103 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32); 104 __u16 s_volumeseqnum; 105 __u16 s_partition_flags; 106 }; 107 108 #pragma pack() 109 110 struct udf_sb_info { 111 struct udf_part_map *s_partmaps; 112 __u8 s_volume_ident[32]; 113 114 /* Overall info */ 115 __u16 s_partitions; 116 __u16 s_partition; 117 118 /* Sector headers */ 119 __s32 s_session; 120 __u32 s_anchor; 121 __u32 s_last_block; 122 123 struct buffer_head *s_lvid_bh; 124 125 /* Default permissions */ 126 umode_t s_umask; 127 kgid_t s_gid; 128 kuid_t s_uid; 129 umode_t s_fmode; 130 umode_t s_dmode; 131 /* Lock protecting consistency of above permission settings */ 132 rwlock_t s_cred_lock; 133 134 /* Root Info */ 135 struct timespec64 s_record_time; 136 137 /* Fileset Info */ 138 __u16 s_serial_number; 139 140 /* highest UDF revision we have recorded to this media */ 141 __u16 s_udfrev; 142 143 /* Miscellaneous flags */ 144 unsigned long s_flags; 145 146 /* Encoding info */ 147 struct nls_table *s_nls_map; 148 149 /* VAT inode */ 150 struct inode *s_vat_inode; 151 152 struct mutex s_alloc_mutex; 153 /* Protected by s_alloc_mutex */ 154 unsigned int s_lvid_dirty; 155 }; 156 157 static inline struct udf_sb_info *UDF_SB(struct super_block *sb) 158 { 159 return sb->s_fs_info; 160 } 161 162 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb); 163 164 int udf_compute_nr_groups(struct super_block *sb, u32 partition); 165 166 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag) 167 { 168 return test_bit(flag, &UDF_SB(sb)->s_flags); 169 } 170 171 static inline void UDF_SET_FLAG(struct super_block *sb, int flag) 172 { 173 set_bit(flag, &UDF_SB(sb)->s_flags); 174 } 175 176 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag) 177 { 178 clear_bit(flag, &UDF_SB(sb)->s_flags); 179 } 180 181 #endif /* __LINUX_UDF_SB_H */ 182