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 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 /* 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[0]; 89 }; 90 91 struct udf_part_map { 92 union { 93 struct udf_bitmap *s_bitmap; 94 struct inode *s_table; 95 } s_uspace; 96 union { 97 struct udf_bitmap *s_bitmap; 98 struct inode *s_table; 99 } s_fspace; 100 __u32 s_partition_root; 101 __u32 s_partition_len; 102 __u16 s_partition_type; 103 __u16 s_partition_num; 104 union { 105 struct udf_sparing_data s_sparing; 106 struct udf_virtual_data s_virtual; 107 struct udf_meta_data s_metadata; 108 } s_type_specific; 109 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32); 110 __u16 s_volumeseqnum; 111 __u16 s_partition_flags; 112 }; 113 114 #pragma pack() 115 116 struct udf_sb_info { 117 struct udf_part_map *s_partmaps; 118 __u8 s_volume_ident[32]; 119 120 /* Overall info */ 121 __u16 s_partitions; 122 __u16 s_partition; 123 124 /* Sector headers */ 125 __s32 s_session; 126 __u32 s_anchor; 127 __u32 s_last_block; 128 129 struct buffer_head *s_lvid_bh; 130 131 /* Default permissions */ 132 umode_t s_umask; 133 kgid_t s_gid; 134 kuid_t s_uid; 135 umode_t s_fmode; 136 umode_t s_dmode; 137 /* Lock protecting consistency of above permission settings */ 138 rwlock_t s_cred_lock; 139 140 /* Root Info */ 141 struct timespec s_record_time; 142 143 /* Fileset Info */ 144 __u16 s_serial_number; 145 146 /* highest UDF revision we have recorded to this media */ 147 __u16 s_udfrev; 148 149 /* Miscellaneous flags */ 150 unsigned long s_flags; 151 152 /* Encoding info */ 153 struct nls_table *s_nls_map; 154 155 /* VAT inode */ 156 struct inode *s_vat_inode; 157 158 struct mutex s_alloc_mutex; 159 /* Protected by s_alloc_mutex */ 160 unsigned int s_lvid_dirty; 161 }; 162 163 static inline struct udf_sb_info *UDF_SB(struct super_block *sb) 164 { 165 return sb->s_fs_info; 166 } 167 168 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb); 169 170 int udf_compute_nr_groups(struct super_block *sb, u32 partition); 171 172 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag) 173 { 174 return test_bit(flag, &UDF_SB(sb)->s_flags); 175 } 176 177 static inline void UDF_SET_FLAG(struct super_block *sb, int flag) 178 { 179 set_bit(flag, &UDF_SB(sb)->s_flags); 180 } 181 182 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag) 183 { 184 clear_bit(flag, &UDF_SB(sb)->s_flags); 185 } 186 187 #endif /* __LINUX_UDF_SB_H */ 188