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_UID_FORGET 11 /* save -1 for uid to disk */ 24 #define UDF_FLAG_GID_FORGET 12 25 #define UDF_FLAG_UID_SET 13 26 #define UDF_FLAG_GID_SET 14 27 #define UDF_FLAG_SESSION_SET 15 28 #define UDF_FLAG_LASTBLOCK_SET 16 29 #define UDF_FLAG_BLOCKSIZE_SET 17 30 #define UDF_FLAG_INCONSISTENT 18 31 #define UDF_FLAG_RW_INCOMPAT 19 /* Set when we find RW incompatible 32 * feature */ 33 34 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001 35 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002 36 #define UDF_PART_FLAG_READ_ONLY 0x0010 37 #define UDF_PART_FLAG_WRITE_ONCE 0x0020 38 #define UDF_PART_FLAG_REWRITABLE 0x0040 39 #define UDF_PART_FLAG_OVERWRITABLE 0x0080 40 41 #define UDF_MAX_BLOCK_LOADED 8 42 43 #define UDF_TYPE1_MAP15 0x1511U 44 #define UDF_VIRTUAL_MAP15 0x1512U 45 #define UDF_VIRTUAL_MAP20 0x2012U 46 #define UDF_SPARABLE_MAP15 0x1522U 47 #define UDF_METADATA_MAP25 0x2511U 48 49 #define UDF_INVALID_MODE ((umode_t)-1) 50 51 #define MF_DUPLICATE_MD 0x01 52 #define MF_MIRROR_FE_LOADED 0x02 53 54 struct udf_meta_data { 55 __u32 s_meta_file_loc; 56 __u32 s_mirror_file_loc; 57 __u32 s_bitmap_file_loc; 58 __u32 s_alloc_unit_size; 59 __u16 s_align_unit_size; 60 /* 61 * Partition Reference Number of the associated physical / sparable 62 * partition 63 */ 64 __u16 s_phys_partition_ref; 65 int s_flags; 66 struct inode *s_metadata_fe; 67 struct inode *s_mirror_fe; 68 struct inode *s_bitmap_fe; 69 }; 70 71 struct udf_sparing_data { 72 __u16 s_packet_len; 73 struct buffer_head *s_spar_map[4]; 74 }; 75 76 struct udf_virtual_data { 77 __u32 s_num_entries; 78 __u16 s_start_offset; 79 }; 80 81 struct udf_bitmap { 82 __u32 s_extPosition; 83 int s_nr_groups; 84 struct buffer_head *s_block_bitmap[]; 85 }; 86 87 struct udf_part_map { 88 union { 89 struct udf_bitmap *s_bitmap; 90 struct inode *s_table; 91 } s_uspace; 92 __u32 s_partition_root; 93 __u32 s_partition_len; 94 __u16 s_partition_type; 95 __u16 s_partition_num; 96 union { 97 struct udf_sparing_data s_sparing; 98 struct udf_virtual_data s_virtual; 99 struct udf_meta_data s_metadata; 100 } s_type_specific; 101 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32); 102 __u16 s_volumeseqnum; 103 __u16 s_partition_flags; 104 }; 105 106 #pragma pack() 107 108 struct udf_sb_info { 109 struct udf_part_map *s_partmaps; 110 __u8 s_volume_ident[32]; 111 112 /* Overall info */ 113 __u16 s_partitions; 114 __u16 s_partition; 115 116 /* Sector headers */ 117 __s32 s_session; 118 __u32 s_anchor; 119 __u32 s_last_block; 120 121 struct buffer_head *s_lvid_bh; 122 123 /* Default permissions */ 124 umode_t s_umask; 125 kgid_t s_gid; 126 kuid_t s_uid; 127 umode_t s_fmode; 128 umode_t s_dmode; 129 /* Lock protecting consistency of above permission settings */ 130 rwlock_t s_cred_lock; 131 132 /* Root Info */ 133 struct timespec64 s_record_time; 134 135 /* Fileset Info */ 136 __u16 s_serial_number; 137 138 /* highest UDF revision we have recorded to this media */ 139 __u16 s_udfrev; 140 141 /* Miscellaneous flags */ 142 unsigned long s_flags; 143 144 /* Encoding info */ 145 struct nls_table *s_nls_map; 146 147 /* VAT inode */ 148 struct inode *s_vat_inode; 149 150 struct mutex s_alloc_mutex; 151 /* Protected by s_alloc_mutex */ 152 unsigned int s_lvid_dirty; 153 }; 154 155 static inline struct udf_sb_info *UDF_SB(struct super_block *sb) 156 { 157 return sb->s_fs_info; 158 } 159 160 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb); 161 162 int udf_compute_nr_groups(struct super_block *sb, u32 partition); 163 164 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag) 165 { 166 return test_bit(flag, &UDF_SB(sb)->s_flags); 167 } 168 169 static inline void UDF_SET_FLAG(struct super_block *sb, int flag) 170 { 171 set_bit(flag, &UDF_SB(sb)->s_flags); 172 } 173 174 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag) 175 { 176 clear_bit(flag, &UDF_SB(sb)->s_flags); 177 } 178 179 #endif /* __LINUX_UDF_SB_H */ 180