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_UID_IGNORE 12 /* use sb uid instead of on disk uid */ 27 #define UDF_FLAG_GID_FORGET 13 28 #define UDF_FLAG_GID_IGNORE 14 29 #define UDF_FLAG_UID_SET 15 30 #define UDF_FLAG_GID_SET 16 31 #define UDF_FLAG_SESSION_SET 17 32 #define UDF_FLAG_LASTBLOCK_SET 18 33 #define UDF_FLAG_BLOCKSIZE_SET 19 34 35 #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001 36 #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002 37 #define UDF_PART_FLAG_FREED_BITMAP 0x0004 38 #define UDF_PART_FLAG_FREED_TABLE 0x0008 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 #pragma pack(1) /* XXX(hch): Why? This file just defines in-core structures */ 55 56 #define MF_DUPLICATE_MD 0x01 57 #define MF_MIRROR_FE_LOADED 0x02 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[0]; 90 }; 91 92 struct udf_part_map { 93 union { 94 struct udf_bitmap *s_bitmap; 95 struct inode *s_table; 96 } s_uspace; 97 union { 98 struct udf_bitmap *s_bitmap; 99 struct inode *s_table; 100 } s_fspace; 101 __u32 s_partition_root; 102 __u32 s_partition_len; 103 __u16 s_partition_type; 104 __u16 s_partition_num; 105 union { 106 struct udf_sparing_data s_sparing; 107 struct udf_virtual_data s_virtual; 108 struct udf_meta_data s_metadata; 109 } s_type_specific; 110 __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32); 111 __u16 s_volumeseqnum; 112 __u16 s_partition_flags; 113 }; 114 115 #pragma pack() 116 117 struct udf_sb_info { 118 struct udf_part_map *s_partmaps; 119 __u8 s_volume_ident[32]; 120 121 /* Overall info */ 122 __u16 s_partitions; 123 __u16 s_partition; 124 125 /* Sector headers */ 126 __s32 s_session; 127 __u32 s_anchor; 128 __u32 s_last_block; 129 130 struct buffer_head *s_lvid_bh; 131 132 /* Default permissions */ 133 umode_t s_umask; 134 kgid_t s_gid; 135 kuid_t s_uid; 136 umode_t s_fmode; 137 umode_t s_dmode; 138 /* Lock protecting consistency of above permission settings */ 139 rwlock_t s_cred_lock; 140 141 /* Root Info */ 142 struct timespec s_record_time; 143 144 /* Fileset Info */ 145 __u16 s_serial_number; 146 147 /* highest UDF revision we have recorded to this media */ 148 __u16 s_udfrev; 149 150 /* Miscellaneous flags */ 151 unsigned long s_flags; 152 153 /* Encoding info */ 154 struct nls_table *s_nls_map; 155 156 /* VAT inode */ 157 struct inode *s_vat_inode; 158 159 struct mutex s_alloc_mutex; 160 /* Protected by s_alloc_mutex */ 161 unsigned int s_lvid_dirty; 162 }; 163 164 static inline struct udf_sb_info *UDF_SB(struct super_block *sb) 165 { 166 return sb->s_fs_info; 167 } 168 169 struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb); 170 171 int udf_compute_nr_groups(struct super_block *sb, u32 partition); 172 173 static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag) 174 { 175 return test_bit(flag, &UDF_SB(sb)->s_flags); 176 } 177 178 static inline void UDF_SET_FLAG(struct super_block *sb, int flag) 179 { 180 set_bit(flag, &UDF_SB(sb)->s_flags); 181 } 182 183 static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag) 184 { 185 clear_bit(flag, &UDF_SB(sb)->s_flags); 186 } 187 188 #endif /* __LINUX_UDF_SB_H */ 189